Microsoft KB Archive/27509

Information on dxaMin and dyaMin

PSS ID Number: Q27509 Article last modified on 11-02-1994

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MS-DOS

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The dxaMin is the smallest horizontal movement the print head is capable of. The dyaMin is the smallest vertical movement the print head is capable of. These measurements vary from printer to printer and must be determined from the printer documentation.

Unless you have specified PrinterType:5, both the dxaMin and dyaMin are given in twips. A twip is 1/1400 inch. This measurement is used because most printers have a minimum print head movement, which divides evenly into 1/1400 inch. Most printer manuals give the minimum print head movement in terms of inches, which must be translated into twips for the PRD. For example, a printer manual says that the minimum horizontal print head movement is 1/120 inch, which is equivalent to 12/1400 inch, meaning that the dxaMin entry in the PRD would be 12. If Word sees that you have set PrinterType to 5, Word understands that your printer is a laser printer, and Word will interpret the value you enter for dxaMin differently.

Laser printers are capable of smaller horizontal measurements that do not divide evenly into 1/1400 inch, so the dxaMin of laser printers is not expressed in twips. Rather, it is expressed in units per inch. For example, a dxaMin of 300 indicates 1/300 inch. The dyaMin for laser printers, however, is still expressed in twips.

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