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专利名称：Method of and apparatus for printing发明人：Paul Lapstun,Simon Robert Walmsley,Kia
Silverbrook
申请号：US10636218申请日：20030808公开号：US07215443B2公开日：20070508
专利附图：
摘要：It is necessary that paper be moved past the printhead at a constant velocity toobtain artifact-free printing. Therefore the printhead requires a constant stream of dataduring printing. Whilst it is possible to rasterize the page using a page description
language directly to the printhead, it is uneconomical. Hence the redering is carried out inthe PC. However, the standard USB peripheral connection is the standard connection onPCs, which places a constraint on the limit of data per page that can be transmitted tothe printer and still obtain a reasonable rate of printing. Thus the contone images andgraphics are rendered in the PC to a pixel level, and the black text and graphics arerendered in the PC to a dot level, where the rendered data is compressed and
transmitted to the printer. The transmitted data is decompressed and combined and theimages overlaid and printed.
申请人：Paul Lapstun,Simon Robert Walmsley,Kia Silverbrook
地址：Balmain AU,Balmain AU,Balmain AU
国籍：AU,AU,AU
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