Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2007-04-02
2009-08-11
Nguyen, Thinh H (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S043000
Reexamination Certificate
active
07571972
ABSTRACT:
A printer includes a processor, and a printhead interfaced to the processor and which is configured to print ink. The processor includes an address, data and control bus. An expander unit and a decoder unit are each coupled to the bus and configured respectively to decompress a bi-level black layer and a contone layer of a page to be printed. A halftoner/compositor unit is coupled to the bus, and is configured to halftone the decompressed contone layer to form a bi-level cyan, yellow, magenta, and black (CYMK) layer and then composite the decompressed bi-level black layer over the bi-level CYMK layer to form a bi-level CYMK image of the page to be printed. A printhead interface couples the bus to the printhead so that the printhead can print the CYMK image.
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Nguyen Thinh H
Silverbrook Research Pty Ltd
LandOfFree
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