Photocopying – Contact printing – Light boxes
Patent
1994-12-12
1996-10-15
Dang, Thu A.
Photocopying
Contact printing
Light boxes
25055936, G03G 500
Patent
active
055659659
ABSTRACT:
A sensor having a shutter mounted to a segment of a molded hinge for movement within a housing in opposition to a light path between an LED and photodetector is described. The molded arm includes a hinge and the segment of the molded hinge extends outside the housing connected to the elongated arm. One end of the elongated arm engages a moving photosensitive surface and deviations of the edge position of the photosensitive surface rotate the shutter in relation to the light path between the LED and photodetector for tracking the edge position of the moving photosensitive surface by providing signals representing shutter position.
REFERENCES:
patent: 4959040 (1990-09-01), Gardner et al.
patent: 5347348 (1994-09-01), Nagata
Costanza Daniel W.
Leo Michael F.
Chapuran Ronald F.
Dang Thu A.
Xerox Corporation
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