Electrophotographic recording with multiple-bit grey level LED p

Details Electrophotographic recording with multiple-bit grey level LED p Electrophotographic recording with multiple-bit grey level LED p

1992-12-28

1994-07-05

Evans, Arthur G.

395101, G06F 1500

Patent

active

053275241

ABSTRACT:
A recording apparatus and method wherein a plurality of LEDs record pixel information on an electrophotographic recording medium. The LEDs are driven by a grey level driver to control the size of each pixel. The location of a pixel is controlled during a main line recording period to shift the pixel's centroid or center. Where a pixel is located at an edge or border of a text-like structure and its centroid is shifted to reduce edge raggedness, an exposure duration of the LED is increased to compensate for overlap with pixels that are within the text-like structure.

REFERENCES:
patent: 4746941 (1988-05-01), Pham et al.
patent: 4750010 (1988-06-01), Ayers et al.
patent: 4847641 (1989-07-01), Tung
patent: 4887225 (1989-12-01), Yao
patent: 5025322 (1991-06-01), Ng
patent: 5111217 (1992-05-01), Zeise
patent: 5126759 (1992-06-01), Small et al.
patent: 5138337 (1992-08-01), Ng

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