Method and apparatus for controlling high speed printing

Details Method and apparatus for controlling high speed printing Method and apparatus for controlling high speed printing

1994-07-20

1995-11-14

Powell, Mark R.

395115, G06F 312

Patent

active

054674310

ABSTRACT:
When the size of a printing paper is smaller than a half of the whole area used for expanding the printing data, a method and apparatus for controlling high speed printing in a printer device, having a bit-map memory, a data transfer circuit for transferring video data on the bit-map memory to a printer, and a copying unit for copying the dot-data within a rectangular region on the bit-map memory, include copying the dot-data expanded in a first area on the bit-map memory into a second area that does not overlap with the first area; and sending the dot-data to the printer, and simultaneously expanding the printing data of the next page in the first area. When the size of a printing paper is smaller than the whole area, the method and apparatus include copying the dot-data expanded in a first area on the bit-map memory into a second area that overlaps with the first area in one part; sending the dot-data to the printer; and expanding the printing data of the next page in the first area partially in parallel.

REFERENCES:
patent: 5033880 (1991-07-01), Kageyama et al.
patent: 5204959 (1993-04-01), Sakuragi
patent: 5265209 (1993-11-01), Kageyama et al.
patent: 5270831 (1993-12-01), Parulski et al.
patent: 5311259 (1994-05-01), Moriya et al.
patent: 5316396 (1994-05-01), Fukaya
patent: 5324122 (1994-06-01), Kobayakawa
patent: 5361329 (1994-11-01), Morita et al.

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