1987-11-27
1988-05-24
Gellner, Michael L.
B41B 1900
Patent
active
047469420
ABSTRACT:
A laser beam is widened in one dimension to cover an array of a substantial number of electro-optic gates. The beam is divided by the gates into a plurality of potential spot-forming beams. The transmission of each beam to a photosensitive surface is selectively inhibited in accordance with a pre-determined pattern or program, while the beams are swept relative to the photosensitive surface to form characters and other images. Preferably, the gates are formed by a wafer of PLZT electro-optic ceramic material, with a large number of closely-spaced electrodes on the surface, in cooperation with a crossed polarizer. Preferably, the beams are collimated and a traveling lens and reflector combination is moved parallel to the photosensitive surface in the collimated beams to space the spots on the film from one another. The collimated beams are made convergent so that a relatively small, light-weight lens can be used to compose relatively long lines of text without excessive loss of light or vignetting. Also provided are a relatively simple but stable lens-reflector carriage and rail structure on which the carriage travels in order to sweep the beam relative to the photosensitive surface.
REFERENCES:
patent: 3517592 (1970-06-01), Kollar
patent: 3568178 (1971-03-01), Day
patent: 3585296 (1971-06-01), Martin
patent: 3597593 (1971-08-01), Overacker
patent: 3626459 (1971-12-01), Haflinger et al.
patent: 3688033 (1972-08-01), Hell et al.
patent: 3692935 (1972-09-01), Manber
patent: 3721991 (1973-03-01), Kaufman et al.
patent: 3820123 (1974-06-01), Ammann
patent: 3952311 (1976-04-01), Lapeyre
patent: 4000495 (1976-12-01), Pirtle
patent: 4044363 (1977-08-01), Morgan
patent: 4096486 (1978-06-01), Pfeifer et al.
patent: 4277154 (1981-07-01), Sakabinos
patent: 4279483 (1981-07-01), England et al.
patent: 4310226 (1982-01-01), Manber et al.
patent: 4316196 (1982-02-01), Jacobs
patent: 4342504 (1982-08-01), Ebner
patent: 4344677 (1982-08-01), Stuermer et al.
patent: 4370678 (1983-01-01), Kitamura
patent: 4378562 (1983-03-01), Oosaka et al.
patent: 4394076 (1983-07-01), Manber et al.
patent: 4419676 (1983-12-01), Lenk et al.
patent: 4431295 (1984-02-01), Moyroud et al.
patent: 4554561 (1985-11-01), Daniele et al.
patent: 4563747 (1986-01-01), Tidd
patent: 4591880 (1986-05-01), Mitsuka
patent: 4617578 (1986-10-01), Neyu et al.
G. Wessel, "Electro-Optical Ceramic (PLZT) as Light-Gate Array for Non-Impact Printer", Research CT STD Elektrik Lorenze, W. Germ Publ. Unk.
Cutchen et al. "PLZT Electrooptic Shutters", Applns, Applied Optics, vol. 14, 8/75, pp. 1866-1873.
Ueno et al. "PLZT Spatial Light Modular for a 1-D Halogram Memory", Applied Optics, vol. 19, No. 1, 1/80, pp. 164-172.
IBM Technical Disclosure Bulletin, vol. 13, No. 12, 5/19/71, (Optical Printer).
Taylor et al. (Ferroelectric Light Valve Arrays for Optical Memories), IEEE Trans Sonics and Ultrasonics, 1972, SU-19, pp. 81-99.
Tults, "A Facsimile Printer Utilizing an Array of Liquid Crystal Cell Proceedings of the S.I.D.", vol. 12/4, 4th Qtr. 1971, pp. 199-203.
Gellner Michael L.
Neff Gregor N.
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