Page printer and page printer control method

Details Page printer and page printer control method Page printer and page printer control method

2005-06-14

2005-06-14

Lamb, Twyler (Department: 2622)

Facsimile and static presentation processing

Static presentation processing

Memory

C358S001150, C358S001140, C358S001200, C358S001900, C358S528000

Reexamination Certificate

active

06906822

ABSTRACT:
The present invention relates to a page printer control method, a page printer therefor, for compressing print data for one page and for storing the compressed data in a memory, so that even when a printing resolution is changed in due to a memory shortage, the resolution can be used for all the pages of a document. According to the present invention, a system for controlling a page printer includes a memory, a controller for drawing print data, a compression circuit for compressing drawing data, an expanding circuit for expanding the compressed data, and a video output circuit for outputting expanded data to the printer engine as a video signal. The controller detects the remaining capacity of the compression data area in the memory, and when a memory shortage is detected, i.e., when insufficient storage capacity is available, the printing resolution is changed and the drawing process is performed, starting at the beginning of the job.

REFERENCES:
patent: 5724154 (1998-03-01), Ito et al.
patent: 6304336 (2001-10-01), Sugaya
patent: 2-9654 (1990-01-01), None
patent: 8-25716 (1996-01-01), None
patent: 9-314930 (1997-12-01), None
patent: 10-16322 (1998-01-01), None
patent: 10-305624 (1998-11-01), None

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