HP PCL Printer Control Language

• Overview

• Commands (list)

• Fonts

• Macros - (e-forms)

• MICR Check printing

• Duplex printing

• Multi-Copy printing

PCL 6 commands are typically binary and therefore more compact. However, PCL 6 lacks some features of PCL 5 and is closer to Windows GDI than a PDL. All PCL 6 printers also support PCL 5.

Quoting from the "PCL 5 Printer Language Technical Reference Manual"

Hewlett-Packard created the PCL printer language (simply referred to as "PCL" elsewhere in this manual) to provide an economical and efficient way for application programs to control a range of printer features across a number of printing devices

PCL commands follow a consistant specification with industry wide acceptance to control common printer features ranging from source paper tray selection, font and graphics layout, through macro recording and play back of common form elements

PCL 5 commands begin with the ASCII Escape character (decimal value 27, hex 1B, abbreviated as Esc) and end with the first uppercase letter. Some commands may be followed by binary data or data in another language. Esc ? ? # W were ? is any lowercase letter or symbol other than a numerical digit and # is zero or more numerical digits, typically indicates that the number of bytes indicated by # of binary data such as for an image, character or other bitmap will follow the W. Esc %0B is followed by a number of HP/GL commands which follow a different format.

Any text that is not preceeded by the Esc is printable text.

Esc *p100x200Y is an example of a common PCL5 command that positions the cursor at 100 units left of the upper left corner of the printable area of the page and 200 units down from the type. Coordinates are in the 4th quaderant. Notice that the value preceeds the parameter identification character. e.g. 100x is 100 units in the "x" or left direction. Esc *p100x200YHello will print Hello at (100,200).

Esc E is another example of a common PCL5 command. This command resets the printers internal state machine to known values and is commonly found at the start of a print job.

PCL5 print jobs often include other languages including PJL and HPGL

Other page description languages include PostScript, and ESC (injet printers).

With MS Windows, PCL fonts are "introduced" to the operating system and HP written printer driver (not printer drivers for HP printers... drivers actually written by HP) using:

• PFM files
• PCM files (collections of PFM files)
  

Little known facts

• NOTE: Despite all the descriptions not allowing it, there are "groupless" parametrized commands. <esc>(8U for example has a command of the parameterized type, the "(" which is immediatly followed by the value and parameter. It is not valid PCL but you would be hard pressed to select the correct font without it. Setting the group to asc(127) seems to be the most logical way to handle this when parsing PCL commands.
  
• Remember that at 600dpi with the MICR font selected at 8.00 point, there is no need for "half-spot walk" error correction, but at 300dpi, 1/8 of an inch is 37.5 pixels and the font will print at either 37 pixels per character or 38 resulting in one half pixel of positioning error per character. This does not become significant untill 5 to 10 characters are printed and can be compinsated for by repositioning the cursor with an Esc *p+#X command where # is the number of characters just printed divided by two.
  
• NOTE: Not all binary transfer escape sequences are defined by the "w" parameter character or"W" terminating character. However, this is the preferred parameter for standardization. The following are some sequences that do not end with a "w" or "W"; these commands should be parsed and any binary data discarded if the device does not support the command.
  • Esc & p # x/X [Transparent data] Transparent print data
  • Esc * b # v/V [Raster data] Raster graphics transfer by plane
    
• NOTE: The following Esc?W commands should not be interpreted as binary data commands:
  • Esc & k # W Device Specific Control
  • Esc ( W Select Primary Font Character Set
  • Esc ) W Select Secondary Font Character Set
  • Esc & d W Underline
    
• DEVICE NOTE: LaserJets do not currently support the lowercase "w" as indicating that binary data follows and will continue parsing the binary data, looking for value field or terminating character.
   
• There are raster graphic compression modes! And they work! 90% compression in many cases. See Tony Parkhurst's PCLCOMP.EXE (c source 1,2, man, notes, supported printers) DIGITAL INSIGHT also wrote a less effective version (no-compression to mode 2 only) pcl_pack.c
   
• NOTE: The Perf Skip Disable command (<esc>&l0L) does not prevent a page eject when data is printed off the bottom of the page, it only delays it from the point where the lower non-printable margin begins to the actual end of the physical page.
   
• DEVICE NOTE: LaserJets prior to LJ4, DeskJets below DJ1200C, PaintJet XL300, and the Color LaserJet do not support HP-GL/2 commands or picture frame directives within macros.
   
• To extract text from a PCL print file:
  1. Use the positioning information in the PCL file (the *p or &a groups) to build a dbase table with fields for each bit of text, the x position and the y position.
  2. sort the table by y position and then x position within each y row. If there are columns do a REPL command to increase any y positions in the second or following columns (x position in the columns range) so that they are moved below the first column on a "virtual" page that is longer than the original.
  3. read through the table in sorted order concatenating the text and exporting it. When the y position changes insert a cr/lf if desired. Tricky analysis of the way the positions are changing can allow the detection of paragraphs, tables, superscrip, subscript and other positional formatting.
      
• When a macro ID is specified for which no macro has been defined, the macro invocation, macro deletion, and "make macro permanent or temporary" commands are ignored.
   
• The macro enabled for auto macro overlay is executed on each page, untill the macro is disabled (&f5X) or deleted (&f6X, 7X, or 8X) a reset occurs (<esc>E, UEL, or control panel), or the page length (&l#P), page size (&l#A), or orientation (&l#O) is changed.
   
• Despite the fact that it doesn't say you can't, and I could have sworn I did once, the tray select command (&l#H) is resoundingly ignored inside a macro (at least with a 4X overlay). Dammit!
   
• pcl/html2pcl.pl.htm This PERL script from http://www.w3.org/Tools/html2pcl porports to translate HTML into PCL
• As per http://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types the correct mimetype for PCL 5 is:
  appliction/vnd.hp-PCL
  Another related mimetype, defined by RFC1486 is
  appliction/remote-printing
   

HP documentation is available from HP, NOT from us!
See: http://www.hp.com/cposupport/printers/support_doc/bpl01354.html $150 (CD or hardcopy?)
or http://www.hp.com/pond/cdrom/prodselect/pclpjl.html $0 + shipping on CD

• PCL 5 Comparison Guide
• PCL 5 Color Technical Reference Manual
• PCL 5 Developer’s Guide(search HP)
• PCL 6 Technical Reference Manual (HP)
• LaserJet 4Si Developer’s Quick Reference Guide

Also:

• Lee Jones PCL intro and command list

See also:

+

• http://www.undocprint.org/_media/formats/page_description_languages/pcl5_color_programming_quick_reference.pdf HP PCL5c Color Programming Quick Reference.+
• http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13211/bpl13211.pdf +
• http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13210/bpl13210.pdf +
• Osvaldo Marques, Jr of DIS-Desenvolvimento e Implantação de Sistemas Ltda refers to /techref/member/OM-DIS-XEA/pcltotxt.htm C program to convert a pcl image file to text for editing and to convert the edited text file to a pcl image file again.
• http://www.pagetech.com/ PCLTool SDK includes a broad range of creative tools and programs for PCL conversion, transformation, text extraction and stream editing.
  +
• http://www.miraplacid.com/shareware/mpd.shtml Print driver that produces images in several formats. e.g. Print to TIFF file.+
• http://www.mpitech.com AFP/IPDS to PCL translation.
• HPs basic PCL guide (cached 20021204)
• http://www.proka.de/SERVICE/Edvinfos/doku/PCL5.pdf
• http://www.proka.de/SERVICE/Edvinfos/doku/PJL.pdf
• PCL viewers
  • FormView freeware - a HP PCL file reader, ability to view the IRS tax forms in PCL format and to print them to any Windows printer
  • Visual PCL - view your LaserJet PCL print files on-screen in Windows
  • GhostPCL - Source code only.
  • Pickle - Sourceforge project to convert PCL to Bitmaps.
• ftp://ftp.cs.ubc.ca/ftp/archive/netpbm
• http://www.andrews.edu/~bradc/perl/postnet/postnet.pm Perl script to print postnet barcodes in PCL
• http://www.artifex.com/pages/drivers.htm
• Printing from Foxpro
• http://www.vssoftware.com/ utilities to make, convert, etc.. PCL bitmap fonts.
• http://www.execpc.com/~adw/

Please note: These questions have been answered because they are of general interest and do not cover topics that are propriatary. Not all questions can be answered and payment is expected for complex or valuable answers.

Questions:

• rofault~NOSPAM~ at STOPspamgmail.com asks:

  I need to print some reports from a character base system. The client has asked for some minor font changes. so I am trying to use some PCL5 commands to do this. However I cannot get the printer to recognize the escape char. (at least I think that's the problem). Is there something in the printer setup that would ignore the PCL code or do I have to turn PCL mode on?
  My first simple test was to create a text file with some data and then place a bold set of dashes in it. This is what I have and it prints out the same way: (s#B3 ____ (s#B0
  
  Thanks for your assistance.
  Rich

  James Newton of Massmind replies: To answer we would need to know the operating system and programming language.+

  +

• EvetsKire~NOSPAM~ at STOPspamyahoo.com asks:

  I have a C# application that needs to extract a few text fields out of a PCL file. Is there an easy way to convert the PCL to text so that it can be searched? Thanks.

  James Newton of Massmind replies: Delete everything between each escape character and the first uppercase letter that follows it.+

  +

• dicart~NOSPAM~ at STOPspameasweb.com asks:

  Hi, I have developed a program that parses a prn file created with HP Laserjet 4 or 4+. It then manipulates the pcl allowing me to generate dynamic forms. I wish I could control the printer driver itself. Do you know where I can find open source driver software which produces PCL like lj4? Thank you!

  James Newton of Massmind replies: The only open source drivers I am aware of are in the Linux codebase.+

  +

• vikrant.bhangay~NOSPAM~ at STOPspamspartanlabs.com

  I want to generate simple PCL file from text file . Reason for doing this is I want to write HP printer driver for embedded system.
  For example : conversion of file which contains text like “Hello” to PCL.
  I just wanted to write printer driver which would be capable of printing simple text files
  
  

  James Newton replies: Standard text files will print on a PCL5 printer with no modification. Just copy the text out to the printer and you are done. Add an EscE to the beginning if you like, to reset the printer. You can set the font with the codes for font select.+

• integradoidpt3x-meta4- asks:

  Hi,
  
  I have a PCL file with colored text and another PCL file with a rastered bitmap. When I send them to printer (hp deskjet 5150, with drivers hp deskjet 5100 series for Windows XP), I obtain the following:
  
  Colored text: text is printed in black.
  Colored image: black line.
  
  To send them to printer, I have done a program to send raw text to printer (win api) and I have also try "copy /b" command. None of them works.
  
  I have opened these files with PCL Viewer and in both cases, I can see colored text and image correctly. I have printed them ok from this viewer.
  
  I have also tried to print same files but in black and white and I can see everything ok.
  
  It seems to me that color printing is nor working for this printer hp deskjet 5150. Should I need another driver?, some kind of configuration?.
  
  Any help would be appreciated.
  
  Many thanks.
  

  James Newton replies: This is a classic example of the differences between PCL versions, and between pre-rendered PCL code and the rendering from drivers.

  Your PCL Viewer supports all versions of PCL, so it shows the correct image no matter what version of PCL was used to create your PCL files. The printer is PCL3, so it can't understand the commands used to present the elements of the print job that are different between PCL3 and PCL5. I'm assuming your PCL file is a PCL5 print job.

  The PCL file is already rendered to PCL by a printer driver or some other means of producing finished PCL. The windows printer drivers on your computer do not accept PCL, they produce PCL and accept GDI commands from a windows application. They can not take PCL5 commands and translate them into PCL3 commands for the printer. If your PCL Viewer can produces GDI print commands, the windows driver will translate those into PCL3 and the job will print correctly.

  Summary: You can't expect a PCL3 printer to understand a PCL5 print job and a PCL Viewer will translate PCL? into GDI, which an appropriate windows printer driver can translate into PCL3.+

  +

• SERETEC~NOSPAM~ at STOPspambigpond.com.au asks: " do you know of some way, interface device or other, to extract information such as paper size and colour or black from the data stream?" James Newton replies: See the good people at pagetech.com+

  +

• wjlaw100~NOSPAM~ at STOPspamgmail.com asks:

  Hi all. I really need a PCL Library that I can access from VB6.... Something that allows me to position a box, and center text using Built in NP Fonts... something that allows me to specify a JPEG and output it... I have something like this fro Clipper, and love it. I want to be able to build and design my Pages in Pure PCL (Since I use Tons of Macros), and call it from VB... Most font calls, etc. are easy and I've written my own code, but Image conversion to PCL image layout, and Centering calcs for NP Fonts, I can't get a grip on. Suggestions anyone? Thanks! Bill

  James Newton replies: You probably will not find any support for direct PCL generation in the more modern languages. That is the point of having printer drivers for everything in windows, we don't need to mess with the details of the printer languages anymore. Your best path is probably to abandon your current method and learn how to print to the windows driver the standard way. If your macros are form images, you may be able to use a PCLViewer or converter to make them into eps or other graphics which can be used in VB6.+

  +

• dtromblee~NOSPAM~ at STOPspamcox.net asks:

  Hi, I woul like to know this, I need data from my print burst so that I can compile it to be used with a control program which operates a product tracking system. The print burst contains all of the data I need, but I dont know how to view and capture the print burst. Can you help?

  James Newton of James Newton's Massmind replies: Given samples of the print jobs and a good binary editor, any competent programmer can probably figure out a way to get out the data.+

  +

• We have a LJ 4 and 8000 that prints the MICR correctly spaced. Our LJ 8150 prints the MICR code, but the spacing "spreads out" over the length of the check (using the bank's plastic template). We are using the same Unix driver (RAW) and esc sequence. We've tried different cartridges and esc sequence (per Troy) with out changing the printed results. Any suggestions? James Newton replies: The 8150 may have the default resolution set to 300 dpi where your data is positioning the data with commands that assume 600 dpi. The width of the font using for the 8150 may be different (assuming it is a printer resident font). Without seeing the PCL commands being used, it would be hard to comment further.+

  +

• shadow cipher asks: " I guess a better question is "what lower layer network protocol is PCL usually encapsulated in?"." James Newton replies: PCL is quite often sent via the LDP protocal.+

  +

• fkuhn~NOSPAM~ at STOPspamquadrantsoftware.com asks: " I am looking to implement boxes with rounded corners. Is there PCL5 to do so, or must I use GL/2 drawing commands?" James Newton replies: The only way to do it with PCL is to use an image, or many small rectangles. HPGL is the best for that application. Note that HPGL is accept in a PCL print job as of PCL5.+

  +

• amorgan~NOSPAM~ at STOPspamhrdcd.com asks:

  Dear HP printer guru,
  Could you please shed light on the auto page size select that operates with some HP printers (HP1160) but not others (HP1320). Documents formatted to a particular page size ie. Envelope DL cause some HP printers to auto select the size and orientation via the manual feed bin, overriding the default (say A4) page in a bin. This is a desirable feature since it allows various envelopes and the like printed as required by manual feeding. Seems starnge that the feature is present in some modern HP models and not others.
  
  Thanks for any advice and regards,
  
  Adrian Morgan
  ImageWare Technologies Australia

  James Newton replies: The only advice I have is to not depend on the printer and always specify the tray after you specify the size in the print job. Of course, that assumes you control the printer driver.+

  +

   

• lechurn~NOSPAM~ at STOPspamyahoo.com asks:

• I am able to print my document in landscape view now. However, the content still can't be fit into an A4 paper size. Is there PCL command similar to Windows "fit to page" selection in printer properties?

  James Newton replies: In a word, no. You must modify the printed output to fit in the space available.+

  +

• jps3~NOSPAM~ at STOPspampt.lu asks:

• i want to print DOS compiled HPGL2 code via a HP4050TN in duplex mode from a VisualDbase5 software. It works well in single page mode, but I can't find a Duplex command in HPGL2. Or do I have to sent the Duplex code first under PCL5/6 to the printer? TKS in ADV

  James Newton replies: Duplex must be selected in PCL5 or (on some printers) can be selected in the @PJL job setup.+

  +

• ray5_83~NOSPAM~ at STOPspamyahoo.com asks:

  My company software specifies the escape sequence to the printer to set the print format. Now it requires to print in landscape with 10 cpi.
  What i found is for for 10 cpi then sequence is :
  27 40 115 48 72
  and for lanscape is:
  27 38 108 49 79.
  Thus am i correct by just combining both of it to construct the correct escape sequence for it?

  James Newton replies: Yes, I believe so.+

  +

• k.klink~NOSPAM~ at STOPspamsbcsocialserv.org asks:

  This may be basic, but can you access PCL via HTML? If so how? Looking for help to print a signature from a HP 4200 dimm via HTML or a cascading style sheet (CSS) - Thank you.

  James Newton replies: I am not aware of any method of reliably doing that. Something can certainly be developed, but it will require significant investment.+

  +

• ripfeff~NOSPAM~ at STOPspaminsightbb.com asks:

  Have just purchased new laptop with win XP and only USB ports, previously used Win 98 SE with most printing from WP 5.1+ DOS. Have 2000 research code sheets, patient letters etc. Many have narrow top margins, so that after converting to Word, I am worried they will not print to newer printers: Questions: 1) what is last version of PCL which was good with DOS? 2) If I want to squeeze a newer printer or use backward compatibility, (LJ 4+ can handle narrow margins) do I lie to Windows and tell it printer is LJ II, III, 4+ or is there a better way? RI Pfeffer, Emeritus Prof.

  James Newton replies: Answers: 1) PCL is independant of DOS. DOS never did produce PCL itself but many DOS applications produced PCL 4 or PCL 5 code. 2) Almost all printer drivers allow you to set the margins within the ability of the printer. E.g. the driver for a LJ 4200 will allow you to set a top margin of just about anything more than .17 inches. I always use the LJ 4+ driver since all printers made since that are backward compatible and there are very few features added since the 4+.+

  ++

• aluciano74~NOSPAM~ at STOPspamhotmail.com asks:

  I have a network addressable printer attached to the LAN with TCP/IP. The printer has an FTP server running on it, so you can FTP files to it froma anywhere on the intranet. When you do an FTP PUT fn.ext to the printer, it prints the file.
  
  How can I issue PCL commands to this printer from any TCP client on the LAN via an FTP put?
  
  Thank you

  James Newton replies: The PCL commands need to be in the file that you have called fn.ext. You can use any binary editor to make the files, it just needs to be able to put in the PCL escape code.+

  +

• Can I tell a printer to stable or not staple my MSWord dcoument using PCL language? James Newton replies: No, you can't. That may be done through a PJL command. Search the HP support site for PJL commands for your model printer.+

  ++

• fliss~NOSPAM~ at STOPspamadaptive-it.co.uk asks:

  Hello
  We have a bespoke system that requires all of the PCL5 printing commands entered manually, this worked brialliant with the 2200 and the 2300 but when i set up a 2420 using the same commands it doesnt seem to print the last page of a multiple page print job - until the next print run or u press the button.
  
  I have called HP - AND THEY DO NOT KNOW!!! Please help, as i dont even know what the problem is to search for the command to fix it!!!

  James Newton replies: Try adding Esc E to the end of the print job where Esc is the escape character, there is no space and then an upper case E.+

  +

• julien.mosse~NOSPAM~ at STOPspamgefco.fr asks:

  I would like to print a page in landscape format.
  I have tried the ESC&a270P, at several places in the code, that doesn't work.
  Is there a specific place where to put the command ?
  Is there another command ?
  Regards.

  James Newton replies: At the very beginning of the page, after any resets, put ESC&l1O. That is the escape character, an and sign, the lowercase letter L, the number 1, and an uppercase letter O.+

  ++

• lingyt~NOSPAM~ at STOPspamperridot.com asks: " Hi, I would like to know is there a way I can get the filename of my printed document from PCL? I can't find any PCL command for it. Thanks." James Newton replies: There is no file name command in PCL. You may find job info data in a modern PCL driver's output inside @PJL commands.+

  +

• roland.carson~NOSPAM~ at STOPspammoh.gov.on.ca asks:

  Can I control page breaks by just using the just page length size? ie will the printer automatically move to the next page when the page length is reached?
  
  Thanks

  James Newton replies: Yes. Assuming no other page control commands (e.g. form feed, set page size, etc...) are recieved. You man need to enable performation skip with Esc&l1L before you start printing your text. That is the escape character, an and sign, the lower case letter L, the number 1, and the upper case letter L.+

  +

• gpiccoli~NOSPAM~ at STOPspambellatlantic.net asks:

  Is there any documentation that compares PCL5 with PCL6 on a command basis? I have programs that embed PCL5 ESC sequences in the output text and I need to convert them to PCL6. Also, I printed a test file to a PCL6 .prn file and can't find the Form Feed. What does PCL6 use as a FF?
  Thanks,
  Gary

  James Newton replies: There is no "one to one" comparison between PCL5 and PCL6. PCL 6 is based on the Windows GDI commands so it works in a totally different way. It is also much more complex and more difficult to generate directly. There are some notes on the PCL6 page above, but in general you will need to contact HP for PCL 6 documentation.+

  Nitin Bhatnagar of ABC replies:

  That's correct. Infact, PCL6 is totally different in a manner that it works on binary streams rather than esc sequences. For ex., for a form feed which you are asking, it has a "BeginPage" and similarly an "EndPage" operator. You will have to decode this in the binary stream. For more info on how to decode it, please refer HP PCL 6 documentation. I have done a similar kind of conversion in the past but for a limited functionality.
  

  +

  +

• carsons~NOSPAM~ at STOPspaminfinity-software.com asks:

  Hello, I am new to PCL 5e on a Troy HP 2100 and am having trouble with text justification / alignment. Can you please tell me how to best attain the width of a string of proportional-width text (printer font - Arial), prior to sending it to the printer. I am programming in .NET. Thank much.

  James Newton replies: The direct answer to your question lies with the Windows printer driver and GDI, not with PCL. To justify correctly in PCL without knowing the character widths in advance, see: Right and center justification in PCL.+

  + +

• nathan_organ~NOSPAM~ at STOPspammedfin.com.au asks: " What would the code be for a xerox to print ot the second tray." James Newton replies: It depends on the Xerox printer. Look in the user manual or online support. In general it will be Esc&l#H but the # changes from printer to printer.+

  ++

• mliao~NOSPAM~ at STOPspamnytami.com asks: " How can I highlight text using pcl command?" James Newton replies: What sort of a highlight do you want? You can bold the text by just sending esc(s3B before the text and esc(s0B after it, but that A) may not work for all fonts (some fonts don't have a bold version) and B) if the text already WAS bold, it will turn off the bolding after the "highlight." There are other ways like drawing a box or a shadow over it, but they are much more complex.+

  +

• antonysylow~NOSPAM~ at STOPspamhotmail.com asks:

  Hello,
  I am trying to create a batch file to run that will change the number of copies on a HP9000 dn printer.I have found the control commands, the batch file reads as follows
  copy Ec(escape charcter ,a left arow ?)&l5X > LPT2 where LPT2 is mapped to the network printer.When I run the HPCOPY.bat file in a command prompt it says
  The filename, directory name, or volume label syntax is incorrect
  0 file(s) copied.
  'l2X' is not recognized as an internal or external command,
  
  I know it is a bit simple for you guys,but can you help me please?

  James Newton replies: Windows NT and above command prompt (and batch files) interpret the & sign as a command seperator. i.e. it starts a new command. so your command line is seen as two seperate lines:

  copy Ec
  &l5X > LPT2
  

  You can correct that by placing a carat (^) in front of the &

  Secondly the copy command is used to copy the contents of one file or device to another and does not copy characters in the command line itself. You want the echo command.

  Try this instead:

  echo Ec^&l5X>LPT2
  

  +

  +

• deepakm~NOSPAM~ at STOPspaminterrait.com asks:

  Can anyone reply to follwoing queries?
  1. Can I create a PCL using Notepad?
  2. Does the "Print To File" generates PCL?
  3. Is it possible to convert PCL back to ASCII?

  James Newton replies:
  1. No, but only because it can not generate the escape character that is required at the start of any PCL command. If you have the escape character in a file, then you can edit that file in notepad and copy the character. The exception is PCL with binary data such as font downloads and images. Notepad is not a binary editor.

  2. If the printer driver installed is PCL

  3. That depends on a long list of things. Among them are the font used to print the data in PCL, the font settings in the printer driver used to create the PCL, the original source of the text, etc... See pagetech.com for solutions in this area.

  vincent-datascanpharmacy-M96 replies: In reference to (1), you CAN produce PCL from notepad but it requires you to know the ASCII DECIMAL code for the characters rather than the HEX code. For example, ESC is ASCII decimal 27. In notepad, hold ALT and using the NUMERIC KEYPAD (this WILL NOT WORK with the numbers keys on the top of the keyboard) press 2, then press 7, then release the ALT key. You will see the arrow pointing to the left appear at the cursor position. That is the escape character. Most PCL documentation provides the DECIMAL as well as HEX codes for the escape sequences. Make sure you use the DECIMAL code with this technique. +

  +

  +

• I am trying to parse pre-PCL5 files (I have a file with LANGUAGE=PCLSLEEK which I have read may be PCL3 (?)) However I can find no specs for pre-PCL5 anywhere! Any ideas? Thanks+
   
• We store PCL files in our printers and send data to the printer over the WAN. I am currently using a PCL5e driver to communication with a collection of HP's, mostly 4 and 4+. I have 2 4+ printers that force a page break, printing the form, then on a new blank page the data that has been sent to the form. I have tried adjusting the components of the form to be sure that everything is within the printable margins, and checked that the form lines is 66 at the printer with no success. Any suggestions would be useful. James Newton replies: Connect the printer locally, put it in debug mode (<esc>&sC<esc>Y) and then look at what the printer is actually recieving.+

  +

• geoffrey~NOSPAM~ at STOPspamvstars.com.sg asks: " What is the PCL command for inserting a header or footer to every pages of document to be printed?" James Newton replies: There is no single command to do this. You could create a macro with the text of the header or footer and use the macro overlay command to specify that it should be added to each page. +

  +

• norwei~NOSPAM~ at STOPspamastound.net asks:

  Hi, I would like to download a micr font to our printers and make it permanent. But before I buy the micr fonts, I read through the pcl technical reference manuals about how to go about downloading the soft font. I still can't figure out how to do it. Can somebody help me please. By the way, I am trying to do this from the mainframe.

  James Newton replies: Use HP software called Forms and Font Manager which should come with any FLASH memory or hard drive option for the printer.

  If you mean "Perminent in RAM" I would not recommend this for a network connected printer. Network cards seem to clear RAM even when you tell the font to be perminant. The "Make previous font perminant" command is clearly listed in the PCL5 tech ref.

  If you have an HP 2300 or 4200 or newer printer network support does work if you use the "RAM disk" but you will probably want to get Forms and Font Manager or the FSA (File System Architecture) documentation from HP.+

  +

• norwei~NOSPAM~ at STOPspamastound.net asks:

  I was able to print micr fonts on HP laserjet 4si, and 8000 series but I can't seem to print the micr on 5si, 8150DN, 9000 and Troy 9000 series printers. I am using the PCL command <esc>0Q to access the E13B font. Does the E13B font differ between printer models?

  James Newton replies: It can. You need to print the PCL font list from the front panel of the printer to find the exact selection string for the font. It may very well be that this font is not installed in all the printers you are trying to use as it is NOT a standard font.+

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• ktrajkovski~NOSPAM~ at STOPspammasmutual.com asks: " Is there a command that will allow you to pull a sheet from another tray and insert it as a slip-sheet, and then staple after the inserted sheet?" James Newton replies: Tray select commands are documented for each printer in the users manual appendix. I am not aware of any PCL commands for stapleing. As far as I know, that is only available in @PJL commands and is again, specific to the printer.+

  +

• mark.bonner~NOSPAM~ at STOPspampanasonic.co.uk asks:

  I need to print the current Windows Account Username in the footer of every page of every print job - no matter the application software. I looked at the separator technology, but it seems to provide the inclusion of additional pages, rather than changing the actual print job pages.
  
  I think what I'll need to do is intercept the PCL printer output from the driver and modify its content? If so, is there a PCL command that I can include that will enter a username footer on every page.
  
  Any assistance would be appreciated.

  James Newton replies: In a word, no. You would have to first parse the PCL printer output to find each end of page, then insert at that point a font selection command, cursor positioning command and the text of the users name. This is a lot of work... You might be better off looking for a printer driver replacement that could do this for you.+

  +

• vijayv~NOSPAM~ at STOPspamelitecore.com asks:

  How can I know how many pages are there in any pcl binary file.
  Looking for form feed does not work as I have found so many 0xC in this three page document file

  James Newton replies: You are getting extra 0x0C characters from the binary graphic data in the print job. To skip these "fake" form feeds, you must parse the PCL commands, looking for any that end in a "W". The number just before the W is the number of bytes of binary data (after the "W") to skip.

  Note that although most page ejects are caused by form feed characters, there are several other ways to end a page in PCL.+

  +

• I'm trying to rotate text on the page 90 degrees clockwise, to overlay it onto a landscape form. I think I can do this to any page by using ESC&a270P, but when I render the text below with PCL6, the result is not what I would expect. The first line of text is rotated, but it's given its own page ... the other lines look about right but there's clearly some magic I'm missing that makes Page 1 look like that.
  
  ---cut here----
  ESC&a270P line1
  line2
  line3
  line4
  END
  ---cut here---+

  James Newton replies:

  First, I assume you mean PCL 5 when you say PCL 6 above. The commands you are trying are PCL 5 commands, and will not work in PCL 6 print jobs.

  I think the problem is that the printer is running out of room to print line2 and starting a new page to compensate. Try starting this sequence higher and/or more to the right.
   

• rabtrfld~NOSPAM~ at STOPspamcore.com asks:

  I want to print large documents in half-size booklets. For instance, groups of 12 pages can be printed on 3 sheets each. This would involve:
  A) Parse file into pages (by control-L characters?).
  B) Re-order the pages 8 5 10 3 12 1 6 7 4 9 2 11.
  C) Shrink the pages to half size.
  D) Printing them in pairs side-by-side in landscape mode.
  E) Duplex the pages (2 11 on back of 1 12 etc).
  The question is, how do I shrink the pages to half size?
  

  James Newton replies:

  That is really not easy in PCL. Since all sizes and positions are specified absolutly, you have to find and divide by two all:

  1. cursor positions
  2. area width and height
  3. font sizes
  4. bitmaps (oh boy! and that includes bitmap font images)
  5. and so on...

  A better idea would be to find and double any commands that specify the resolution; a 600DPI document prints half size at 1200DPI. Since 1200 is usually the top resolution, you are sunk if the original is already at 1200, but that should be rare. Also, some printers don't support 1200 (and the really old ones only supported 300)

  The only other idea would be to see if your printer supports an @PJL command to reduce output. I don't think any do actually, but that would be the logical place to put it. Please let us know what you figure out!
   

• jim69421~NOSPAM~ at STOPspambresnan.net asks:

  I need to know what progam will open my PRN. I have a print job to a file and niw I can't open it up. Would you tell me in what directory is the .exe file to open a print file saved in a folder.

  James Newton replies: You will have to find or purchase a program. Windows does not come with any way to view print jobs on the screen. See "PCL Viewers" above for some options.+

   

• pattip~NOSPAM~ at STOPspaminterbill.biz asks: " How can I convert my PCL print files to another format such as PDF?" James Newton replies: See http://www.pcltools.com/+
   
• sana_kodikara~NOSPAM~ at STOPspamhotmail.com asks:

  I am generating some reports using Foxpro For DOS. I use PCL codes to draw boxes, lines, etc. How can I convert the reports to a faxable image(raster image)? Shuold insert PCL using hex values? Thank you in advance.

  James Newton replies: There was a fax modem that came with software that would do that... It was an Intel unit... I think it was called a "Satisfaction" or something like that. Today, you can purchase a toolkit from Robert Pooley at PageTech.

  +

• raman~NOSPAM~ at STOPspammsu.edu asks:

  Is there a way to tell the windows PCL driver to only allow letter size. I can do this for PostScript driver by editing the PPD file but what mechanism is available in PCL.

  James Newton replies: Good question... I don't know. I'm assuming you want to keep users from hanging a network printer by selecting a page size that isn't loaded and then not servicing the printers request for the other paper size.

  You might be able to get an answer from the HP forums http://forums.itrc.hp.com/cm/CategoryHome/1,,219,00.html (be sure to put a descriptive title on the question e.g. "need WIN PCL driver to allow only letter size", include a complete description of WHY you need this and exactly what you do in the PS driver and what you have tried in the PCL driver and be sure to follow up and assign points to the answers)

  Please let me know if you find an answer.+

  +

• scrider~NOSPAM~ at STOPspamciber.com asks:

  I am using 3 PCL commands in a Word document. One selects from the approproate drawer, one controls short or long edge duplexing and the third controls the number of copies. My problem is when I print, say 3 copies of the document, it does not collate correctly. Page 1 and 2 print duplexed 3 times followed by page 3 printing 3 times. Is there a way with PCL printer commands to control collating so I get page 1-3 together instead of page 1-2 grouped then page 3 grouped. I've included my PCL commands being used in my document.

  PRINT 27"&l2S"  --- Duplexing 
  PRINT 27"&l20H"  -- Paper Drawer
  PRINT 27"&l2X"  --- Copies
  

  +

  James Newton replies:The problem is that MS Word is also asking the printer driver to send codes for these things and its codes are interferring with your codes. The best thing is to use the settings in MS Word for number of pages, etc...

• palmerjd~NOSPAM~ at STOPspambp.com asks:

  Im trying to use PCL to change fonts and merge with overlays on a printed document using a number of different HP printers; some 5si, Laserjet 4000, IIIp, etc. It works on the 5si printer but am having problems on the others. My question is - can this be down to the version of PCL Im using? Many thanks, Julian Palmer.

  Sure... All of those printers support standard PCL5 commands. If you have it working on one printer the only possible difference is the non-printable margin size between the different models.

  
   

Comments:

• temiraliuly~NOSPAM~ at STOPspamgmail.com

  Hi James! That's the most useful article I have found about PCL!
  I'm trying to find a way to edit PCL code of a file so that my printer uses a particular ink. It's a CMYKB inkjet printer and I need to print a pattern with particular order of inks (I will replace inks with some chemicals). I have been searching any info about ink selection in PCL/PJL, PS before hacking the electronics and controlling the printheads. I would appreciate any input on this.
  Thanks!
  Best,
  Damir

  James Newton of MassMind replies: Inkjets are PCL3, and sadly, I have no experience with them or it. Best wishes.+

  +

  .