Low resolution grey level printing method from high resolution b

Details Low resolution grey level printing method from high resolution b Low resolution grey level printing method from high resolution b

1992-11-16

1995-10-03

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358455, 358462, 395128, H04N 1387, H04N 140, G06F 1500

Patent

active

054556813

ABSTRACT:
An electronic printing apparatus and method transforms a high resolution binary data file to a lower resolution grey level file for printing by a lower resolution printer. Recording is made upon an electrophotographic recording medium preferably employing discharged area development. In order to preserve sharpness to the printed image and reduce edge jaggedness in the recorded image, exposures for grey level pixels are skewed towards the longer durations. In addition, pixel locations in the original binary data file are used to determine the need for pixel shifting during recording of the printed grey level pixels.

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