HP 4050 HP PCL/PJL reference - Printer Job Language Technical Reference Manual - Page 197
Print Data Generators, Commands Used by Print Data Generators
UPC - 088698192764
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Print Data Generators Print Data Generators are applications used to create and print information. Examples include WordPerfect, Harvard Graphics, and Lotus 1-2-3. Software applications of this type should work properly when the printer is under the direct control of the application, and also when there is a spooler between the application and the printer. This is accomplished by using the ENTER command to select the proper printer language before sending print data to the spooler or printer. The UEL command should precede and follow the print job. Print Data Generators should only use PJL commands when a corresponding command does not exist in the printer language. This is recommended so that the application does not override feature settings and adversely affect future jobs. To change feature settings for the duration of the job, or until the next PJL reset condition, use the SET command. Do not use the PJL INITIALIZE command for Print Data Generators. Commands Used by Print Data Generators UEL COMMENT ENTER SET RESET Use before and after every PJL job. Use to add explanations within PJL code. To select the correct printer language for the print job. To select a desired feature when it is not possible using the desired printer language (such as PCL or PostScript). Use at the end of the job if the SET command is used in the job. EN Programming Tips for Using PJL 11-3