Lexmark MS610de Forms and Bar Code Card Technical Reference Guide - Page 74
PostScript emulation
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6 PostScript emulation This section describes additional PostScript emulation operators that are supported when a Forms and Bar Code Card is installed. These operators enable printing of bar code symbologies with user specified parameters from within the PostScript data stream. This functionality is not available in the HP BarDIMM Pro. Defining characteristics The following operators let you further define characteristics of the bar code: Operator barcodeshow barcodebbox barcodewidth Characteristic Paints the specified bar code symbol Returns the coordinates for the bounding box Returns the x and y displacement of the currentpoint For more information on bar code characteristic parameters and default values, see "PostScript emulation operator" on page 76. Command structure considerations Developers must be familiar with the standard that defines the bar code symbology being implemented. The incoming data is analyzed for valid parameters, such as string length and string characters. When an invalid condition is detected, an error message appears. For more information, see "Bar code engine errors" on page 160. Characteristic values, other than the default value, must be explicitly specified. If no value is specified, then the default value is used. Previously specified non-default values are not retained. Currentpoint positioning Currentpoint positioning is set as follows when printing with the Forms and Bar Code Card: • From the currentpoint, bar code printing begins at the bottom left corner of the bounding box. • The currentpoint is located at the bottom right corner of the bounding box when printing is complete. PostScript emulation 74
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