Developing device

Details Developing device Developing device

1983-03-22

1987-06-02

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118659, 355140, G03G 1510

Patent

active

046698590

ABSTRACT:
A developing device for developing an electrostatic latent image formed on an imaging surface includes a developing electrode disposed opposite to the imaging surface and a control circuit for controlling the potential of the developing electrode. In one form, when the control circuit causes the developing electrode to be electrically floating, the upper limit of the voltage excursion is set at different levels as desired. In another form, the control circuit includes a sensor for sensing the potential of the imaging surface thereby allowing to carry out so-called fixed bias or auto-bias developing modes. In a further form, the mode of developing operation is automatically set depending upon the position of a pressure plate which is to be placed on an original for keeping the original in position during copying process.

REFERENCES:
patent: 3892481 (1975-07-01), Schaefer et al.
patent: 4021111 (1977-05-01), Kuroishi et al.
patent: 4025184 (1977-05-01), Mochizuki
patent: 4087171 (1978-05-01), Yano
patent: 4141643 (1979-02-01), Eda et al.
patent: 4168329 (1979-09-01), Miyakawa et al.
patent: 4213693 (1980-07-01), Imai et al.
patent: 4247195 (1981-01-01), Okamoto et al.
patent: 4291643 (1981-09-01), Kobayashi et al.
patent: 4390267 (1983-06-01), Minor

Affiliated with

Also associated with

Rating

Developing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Developing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-609636