Photocopying – Contact printing – Light boxes
Patent
1988-06-10
1989-06-20
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355260, 355215, G03G 500, G03G 1508
Patent
active
048413330
ABSTRACT:
A xerographic cassette adapted to be removably mounted in a main assembly of a printing machine comprises a cassette housing containing a photoreceptor, a housing for containing developer, and an aperture through which the photoreceptor may be exposed to light. A retactable sealing shutter is provided for sealing the developer housing, and a retractable opaque shutter is provided for closing the aperture, the two shutters being linked to form a unitary member which is slideably mounted in the cassette housing. The unitary member cooperates with an actuator mounted on the main assembly of a copier in such manner that the opaque shutter and the sealing shutter are moved together to positions at which they respectively close the aperture and the seal the developer chamber when the process unit is removed from the main assembly, and the opaque shutter and the sealing shutter are moved together to positions at which the aperture and the developer chamber respectively are open when the process unit is inserted in the main assembly of the copier. Suitably, the sliding unitary member is made of plastic and molded as a one-piece unit.
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Prescott A. C.
Xerox Corporation
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