Eastman-kodak Company

Mark R Warda

David J Statt

William E Hunt

Theodore Huthsteiner

A raster image processor for an all points addressable printer includes at least three digital computer controlled processing units arranged in a parallel processing pipe line. The first unit is a master processing unit that receives printing instructions and generates rendering commands. The record unit is connected to the first unit by a dedicated bus, and receives the rendering commands over the bus and generates bit maps corresponding to the rendering commands. The third unit is a memory unit connected to the second unit by a second dedicated bus, and receives the bit maps from the second unit and stores them in a page memory. All three units are connected by a communications and control bus for overall coordination of the units.

Raster image processor for all points addressable printer

A raster image processor for an all points addressable marking engine includes a page memory having a data input and a write enable input. Halftone tints are applied to bit maps of objects stored in the page memory by applying a tint bit pattern to the data input of the page memory while a bit pattern representing the object is being applied to the write enable input of the page memory. Prior to applying the object bit maps to the write enable input of the page memory, the object bit maps may be combined with a texture bit pattern or clipped by a window bit pattern.

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Fairport, NY, United States of America

Mark R Warda