Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-04-11
1999-06-22
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347238, 347240, 347247, 358298, 395115, B41J 2435, B41J 245
Patent
active
059147440
ABSTRACT:
A non-impact printer apparatus and method employs a printhead including a plurality of recording elements and drivers for driving respective recording elements in response to data relative to respective corrected exposure times for recording respective pixels. A first data storage device stores data relative to associating sets of respective recording elements with respective bins. The first data storage device is responsive to first input signals identifying respective recording elements and outputs second signals relative to respective bin assignment numbers for the respective recording elements. A second data storage device is responsive to the second signals for outputting data relative to corrected exposure times for recording respective pixels by respective recording elements. The bin assignment determination for recording elements are established by propagating exposure error calculated from an adjacent respective recording element. This is done so that low resolution spatial frequency errors in cross-track recording noticeable by the eye are generally substantially lower than high resolution spatial frequency errors to reduce visible artifacts in recording.
REFERENCES:
patent: 4455562 (1984-06-01), Dolan et al.
patent: 5586055 (1996-12-01), Ng et al.
patent: 5640190 (1997-06-01), Bollansee et al.
patent: 5818501 (1998-10-01), Ng et al.
Yee S. Ng, "Visual Tolerance Study with One-Dimensional Periodic (Sinusoidal) and Non-Periodic (Impulse) Noise in Electrophotgraphic Gray Level Halftones", Proceedings of IS&T's Eleventh International Congress on Advances in Non-Impact Printing Technologies, 1995, pp. 493-496.
Yee S. Ng, Hieu T. Pham, Hwai T. Tai and Eric K. Zeise, "Gray level printing method with embedded non-uniformity correction using a multibit LED printhead", IS&T's 47th Annual Conference Proceedings, 1994, pp. 622-625.
Yee S. Ng, Heiu Pham and Robert C. Laird, "Non-uniformity correction in LED printing with plural resolution recording", SPIE Proc., vol. 1254, Optical HardCopy and Printing Systems, 1990, pp. 166-177.
Yee S. Ng, "Visual Tolerance Study of One-Dimensional Periodic (sinusoidal) Noise in Various Spatial Frequency Binary and Graylevel Halftones", Proceedings of IS&T's 12th International Conference on Digital Printing Technologies, 1996. pp. 69-71.
Eastman Kodak Company
Le N.
Pham Hai C.
Rushefsky Norman
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