Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-12-30
2000-02-29
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347240, 347252, 347253, 358455, 358456, H04N 140
Patent
active
060315598
ABSTRACT:
A non-impact recording method and apparatus comprises recording grey level pixels using a recording element in accordance with a selectable combination of recording element on-time and intensity wherein at least some pixels are recorded using the recording element so that a pixel of one density is recorded using a different recording element on-time and a different intensity than used for recording a pixel recorded at a second density, the selectable combination being predetermined in accordance with a multi-bit signal representing a grey level of the pixel to be recorded. The recording element also records certain other pixels represented by multi-bit signals that define the same grey level using different combinations of on-time and duration to form pixels of different densities over an image area which pixels tend to average out to the density defined by the multi-bit signal for the certain other pixels.
REFERENCES:
patent: 4746941 (1988-05-01), Pham et al.
patent: 4750010 (1988-06-01), Ayers et al.
patent: 5657069 (1997-08-01), Kelly et al.
Eastman Kodak Company
Le N.
Pham Hai C.
Rushefsky Norman
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