Continued printing by resolution reduction

Details Continued printing by resolution reduction Continued printing by resolution reduction

1995-08-25

1998-02-10

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 140

Patent

active

057174997

ABSTRACT:
Printer (1) has the capability of printing in either 600 by 600 dpi resolution or 300 by 300 dpi under control of data processor controller (17). Bit maps for printing are stored in memory (19). When complex pages require more memory than is available, information from groups of bits in the 600 by 600 bit map is used to define the significance of one bit in a 300 by 300 bit map and the page is printed in the 300 by 300 bit map. This avoids terminating printing or printing partial pages and the difference in images are minor.

REFERENCES:
patent: 4394693 (1983-07-01), Shirley
patent: 4467363 (1984-08-01), Tench
patent: 4555191 (1985-11-01), Gojo
patent: 5083214 (1992-01-01), Knowles
patent: 5471563 (1995-11-01), Dennis et al.
patent: 5483625 (1996-01-01), Robertson et al.
patent: 5502794 (1996-03-01), Sakurai

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