Photocopying – Contact printing – Light boxes
Patent
1991-04-22
1992-06-02
Grimley, A. T.
Photocopying
Contact printing
Light boxes
25023114, 25023115, G03G 1500
Patent
active
051191288
ABSTRACT:
An apparatus for generating timing pulses which includes a first flexible member having a plurality of spaced marks thereon, with the first flexible member being rotatably mounted. The apparatus further includes a second flexible member, positioned substantially adjacent the first flexible member, which has a plurality of spaced marks thereon, with the spaced marks of the second flexible member formed complementary to at least a portion of the spaced marks of the first flexible member, and with the second flexible member being mounted in a stationary manner. Moreover, the apparatus includes means for detecting when the spaced marks of the second flexible member are positioned substantially complementary to the portion of the spaced marks of the first flexible member and generating a timing pulse output in response thereto.
REFERENCES:
patent: 3975633 (1976-08-01), Larkin
patent: 4270860 (1981-06-01), Tsuda et al.
patent: 4470692 (1984-09-01), Shimizu et al.
patent: 4667098 (1987-05-01), Everett
patent: 4678908 (1987-07-01), LaPlante
patent: 4703176 (1987-10-01), Hahn et al.
patent: 4712005 (1987-12-01), Savla
patent: 4731638 (1988-03-01), Cherian
patent: 4860051 (1989-08-01), Taniguchi et al.
Brase Sandra L.
Grimley A. T.
Maginot Paul J.
Xerox Corporation
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