Raster scanning engine driver which independently locates engine

Details Raster scanning engine driver which independently locates engine Raster scanning engine driver which independently locates engine

1991-03-01

1992-04-28

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358296, 358459, H04N 121, H04N 123, H04N 140

Patent

active

051092832

ABSTRACT:
A raster print engine driver for generating from incoming data representative of a continuous tone or text image, a transition-modulated engine drive signal for causing the engine to reproduce the image as a series of modulated print lines, in which the driver establishes a cell scan time period representing the horizontal length along a print line of an elemental cell print area, and generates from the incoming data in the cell at least zero or two independently located drive signal transitions which cause the print engine to change state at selected points along the print lines to closely reproduce the image.

REFERENCES:
patent: 3916096 (1975-10-01), Everett et al.
patent: 4149183 (1979-04-01), Pellar et al.
patent: 4626923 (1986-12-01), Yoshida
patent: 4782398 (1988-11-01), Mita
patent: 4800442 (1989-01-01), Riseman et al.
patent: 4864419 (1989-09-01), Saito et al.
patent: 4926248 (1990-05-01), Kobayashi et al.
patent: 4987495 (1991-01-01), Arai

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