Browse Prior Art Database

Quietwriter Font Cartridge Handling

IP.com Disclosure Number: IPCOM000060556D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Chen, JN: AUTHOR [+3]

Abstract

An arrangement is described which allows an application access to the printing of all available characters with the two cartridges in the Quietwriter* printer. The Quietwriter printer can have two font cartridges loaded concurrently with different typestyles, pitches, and code pages. Through a description of the type of cartridges in a configuration file, the printer can map from a set of unique code pages, P0, P1, and P2, to the Quietwriter cartridges in IBM standard code pages 437, 256, 257, 258, 259, 330, and 500. This is accomplished by matching the requested pitch to a cartridge, and then determining if the requested character is on that cartridge. If so, print it using the cartridge mapping table. If not, the other cartridge is tried for a match.

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Quietwriter Font Cartridge Handling

An arrangement is described which allows an application access to the printing of all available characters with the two cartridges in the Quietwriter* printer. The Quietwriter printer can have two font cartridges loaded concurrently with different typestyles, pitches, and code pages. Through a description of the type of cartridges in a configuration file, the printer can map from a set of unique code pages, P0, P1, and P2, to the Quietwriter cartridges in IBM standard code pages 437, 256, 257, 258, 259, 330, and 500. This is accomplished by matching the requested pitch to a cartridge, and then determining if the requested character is on that cartridge. If so, print it using the cartridge mapping table. If not, the other cartridge is tried for a match. P0, P1, P2 may be new single-code-point-per- character representation for the standard IBM code pages listed above. Mapping from this new representation into the currently available printer fonts is as follows. For example, offset 75 on P1 is a small dotless "i," found only on 256, 257, 258, and 500 at offset 218. If a cartridge of one of the listed code pages is loaded, the character can be printed on that cartridge. Otherwise, an underscore is substituted. * Trademark of IBM Corporation.

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