Method and apparatus for compacting swath data for printers

A printing system and method is provided that compacts bitmap print data by determining, per each swath of a page to be printed, the beginning and ending points of each "area" (206,210,214,218) containing pels that will actually be printed within the swath, the locations of the starting an...

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Bibliographische Detailangaben
Hauptverfasser:	CUNNAGIN, STEPHEN KELLY, EADE, THOMAS JON
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CALCULATING COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC DIGITAL DATA PROCESSING HANDLING RECORD CARRIERS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME IMAGE DATA PROCESSING OR GENERATION, IN GENERAL LINING MACHINES PERFORMING OPERATIONS PHYSICS PRESENTATION OF DATA PRINTING RECOGNITION OF DATA RECORD CARRIERS SEALS SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A printing system and method is provided that compacts bitmap print data by determining, per each swath of a page to be printed, the beginning and ending points of each "area" (206,210,214,218) containing pels that will actually be printed within the swath, the locations of the starting and ending slices of each of these areas, and determining "voids" (208,216) containing a sufficient minimum number of consecutive blank slices within the swath. A void is identified when a number of consecutive blank slices exceeds a predetermined threshold value. The printhead of the printing system will be turned off (234,238) at the beginning of the void, and then turned back on (236,240) as it approaches the end of the void, which would correspond to the beginning of the next area to be printed.