Electrostatographic reproducing machine and process unit therefo

Details Electrostatographic reproducing machine and process unit therefo Electrostatographic reproducing machine and process unit therefo

1987-12-10

1989-02-21

Moses, R. L.

Photocopying

Including fiber optics

355 3TR, G03G 1500

Patent

active

048069671

ABSTRACT:
A process unit which can be removably mounted in a main assembly of an electrostatographic copying machine. The unit comprises a housing enclosing an imaging member and, optionally, other processing means such as a development device, a cleaner, and a charge corotron. The transfer corotron for transferring a toner image from the imaging member to a copy sheet is incorporated in the cassette housing, thus avoiding the need to provide a separate movable cover to protect the imaging member from contamination, physical damage, and light exposure when the cassette is removed from the main assembly of the copier. An electrically conductive guide member for guiding a copy sheet into contact with the imaging member and an electrically conductive guide member for guiding the copy sheet away from the imaging member are both formed integrally with the shield of the transfer corotron as extensions thereof. In consequence of electrically biasing the shield when the process unit is inserted into its operative position in the main assembly, the guides are maintained at the same potential as the shield thereby reducing charge leakage through the copy sheet in the transfer zone, enabling effective image transfer even for moist and relatively highly conductive copy sheets. The exit guide is suitably contoured to ensure that the trailing edge of the copy sheet positively contacts the imaging member.

REFERENCES:
patent: 3985436 (1976-10-01), Tanaka et al.
patent: 4159172 (1979-06-01), Tani et al.
patent: 4260240 (1981-04-01), Pieper
patent: 4357092 (1982-11-01), Nagoshi
patent: 4462677 (1984-07-01), Onoda
patent: 4466729 (1984-08-01), Iwata
patent: 4470689 (1984-09-01), Nomura et al.
patent: 4511237 (1985-04-01), Kawata et al.
patent: 4530588 (1987-07-01), Kimura et al.
patent: 4547059 (1985-10-01), Nagayama et al.
patent: 4566777 (1986-01-01), Honda et al.
patent: 4607941 (1986-08-01), Honda et al.
patent: 4609276 (1986-09-01), Mitzutani
patent: 4627701 (1986-12-01), Onoda

Affiliated with

Also associated with

Rating

Electrostatographic reproducing machine and process unit therefo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrostatographic reproducing machine and process unit therefo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatographic reproducing machine and process unit therefo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1525925