Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1985-04-03
1987-01-20
Goldberg, E. A.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
46160, G01D 942
Patent
active
046383344
ABSTRACT:
An electro-optic line printer comprises a recording medium, a multigate line modulator for printing picture elements or pixels in spatially predetermined positions along a printing axis and an LED side-facet source characterized by having high output intensity and a uniform far field emission and optical means to collimate the far field emission in the tangential direction and focus the near field in the sagittal direction onto the modulator. The optical means comprises a first lens system to collect the light emitted from the LED source in both the tangential and sagittal directions and a second toric lens to collimate the light into a sheetlike beam in the tangential direction and to focus the light in the sagittal direction to a line image at the modulator. Imaging means is optically aligned between the modulator and the recording medium for imaging the modulator onto the recording medium. The solid state LED side-facet emitter source with broad uniform far field emission and high brightness density for line printer applications, eliminating the necessity for an array of individually addressable LEDs required as a light source in the past. Deposited on one facet of the LED source is an AR coating (single or multilayer) with an index of refraction chosen to be approximately midway between the effective modal refractive index of the source and the refractive index of air.
REFERENCES:
patent: 3849738 (1974-11-01), Hakki
patent: 3934961 (1976-01-01), Itoh et al.
patent: 3943462 (1976-03-01), Thompson
patent: 4001719 (1977-01-01), Krupka
patent: 4281904 (1981-08-01), Sprague et al.
patent: 4367925 (1983-01-01), Sprague et al.
patent: 4369457 (1983-01-01), Sprague
patent: 4370029 (1983-01-01), Sprague et al.
patent: 4376946 (1983-03-01), Kaminow
patent: 4437106 (1984-03-01), Sprague
patent: 4450459 (1984-05-01), Turner et al.
patent: 4455562 (1984-06-01), Dolan et al.
patent: 4480899 (1984-11-01), Sprague
patent: 4483596 (1984-11-01), Marshall
patent: 4490611 (1984-12-01), Sekimoto
patent: 4520471 (1985-05-01), Carlin
patent: 4560994 (1985-12-01), Sprague
patent: 4562350 (1985-12-01), Thirouard
IBM Tech. Disc. Bulletin, vol. 19, No. 5, Oct. 76., Electrical Positioning of Lenses, Marinace.
Kaminow et al. "Measurement of the Modal . . . Superluminescent Diode", IEEE Journal of Quantum Electronics, vol. QE-19(4), pp. 493-495 (Apr. 1983).
DeBell, "Visible Anti-Reflection Coating & Their Use".
R. C. Miller et al, "A Gallium-Arsenide Laer Facsimile Printer", The Bell System Technical Journal, vol. 58(9), pp. 1909-1997 (11/79).
Eisenstein, "Theoretical Design of Single-Layer Antireflection Coatings on Laser Facets", AT&T Bell Labs. Tech. J., vol. 63(2), pp. 357-364 (Feb. 1984).
Eisenstein et al, "High Quality Antireflection Coatings on Laser Facets by Sputtered Silicon Nitride", Applied Optics, vol. 23(1), pp. 161-164 (Jan. 1, 1984).
DeBell, "Visible Anti-Reflection Coatings & Their Use", Proceedings of SPIE, vol. 50, pp. 69-85, Aug. 19-20, 1974.
Burnham Robert D.
Paoli Thomas L.
Sprague Robert A.
Thornton Robert L.
Carothers, Jr. W. Douglas
Goldberg E. A.
Reinhart Mark
Xerox Corporation
LandOfFree
Electro-optic line printer with super luminescent LED source does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-optic line printer with super luminescent LED source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-optic line printer with super luminescent LED source will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2137701