Printer control apparatus, printer and printing system

Details Printer control apparatus, printer and printing system Printer control apparatus, printer and printing system

2006-04-18

2006-04-18

Poon, King Y. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060, C358S534000

Reexamination Certificate

active

07031019

ABSTRACT:
To provide high-speed printing with an inexpensive arrangement, a dedicated printer control hardware circuit5is provided between a printer driver1of a host computer and a printer9. The printer driver1divides an image to be printed into an illustration (a natural image), such as a photograph or a drawing, and characters/graphics. The printer driver outputs full-color RGB raster data for the illustration, while performing color conversion/halftoning for the character/graphic data and outputting binary CMYK raster data. The control circuit5performs color conversion/halftoning for the full-color illustration RGB raster data to convert them into binary CMYK raster data. Then, the control circuit5superimposes the obtained binary CMYK raster data and the binary CMYK raster data for characters/graphics to form binary CMYK raster data for a complete print image, and transmits the final binary CMYK raster data to the printer9. The control circuit5also rearranges or thins pixel data for interlace printing or overlap printing.

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