Method and apparatus for laser dye ablation printing with high i

Details Method and apparatus for laser dye ablation printing with high i Method and apparatus for laser dye ablation printing with high i

1994-05-26

1996-05-28

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347188, 347193, 347264, 347139, B41M 5035, G03C 172

Patent

active

055216293

ABSTRACT:
A method and apparatus for performing laser dye ablation printing utilizing a laser diode with improved contrast and uniformity produces exposed film having a minimum optical density (Dmin) of less than 0.11 and exhibiting significant reductions in visible raster lines. Specifically, a laser printing apparatus is provided that includes a mechanism for retaining a film to be exposed, a laser diode source for generating a write beam, and a mechanism for scanning the write beam across the film to generate an image. The intensity of write beam generated by the laser diode source at the film is preferably at least 1.0 mW/square micron. During operation, a film to be exposed is placed in the retaining mechanism and the write beam is scanned across the film to generate an image.

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patent: 5241328 (1993-08-01), Sarraf et al.
patent: 5256506 (1993-10-01), Ellis et al.
patent: 5262275 (1993-11-01), Fan
Journal of the Electrochemical Society, vol. 135, No. 5, May 1988, pp. 1275-1278, "Heat-Mode Lithography with Dye Deposited Films", Akira Morinaka and Shigeru Oikawa (see col. 2, paragraph 1).

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