Electric field potential control device for an image forming app

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B41J 206

Patent

active

055087230

ABSTRACT:
An image forming apparatus includes a back electrode roller which is rotatably disposed on the upper side of an aperture electrode member. A toner carrier roller is disposed on the lower side of the aperture electrode member. The aperture electrode member is constructed such that a plurality of apertures are defined in a row in an insulating sheet and each of a plurality of control electrodes is formed on the upper side of each aperture. A control voltage applying circuit applies a voltage of 0 V or -100 V to each of the control electrodes based on an image signal. A DC power source is electrically connected to the back electrode roller. Toner particles on the toner carrier roller fly under the action of an electric field formed by the back electrode roller. A voltage of -100 V applied to each of the control electrodes prevents the toner particles from flying when no image pixels are to be formed. The voltages are applied to the control electrodes of the aperture electrode members such that an electric field is formed which prevents the charged toner particles from being deposited on the control electrodes. Thus, a higher quality image is formed on a support member.

REFERENCES:
patent: 3689935 (1972-09-01), Pressman et al.
patent: 4491855 (1985-01-01), Fujii et al.
patent: 4743926 (1988-05-01), Schmidlin et al.
patent: 4755837 (1988-07-01), Schmidlin et al.
patent: 4780733 (1988-10-01), Schmidlin
patent: 4814796 (1989-03-01), Schmidlin
patent: 4912489 (1990-03-01), Schmidlin
patent: 5036341 (1991-01-01), Larsson
patent: 5038159 (1991-08-01), Schmidlin et al.
patent: 5095322 (1992-03-01), Fletcher
patent: 5200769 (1993-04-01), Takemura et al.
patent: 5229794 (1993-07-01), Honma et al.
patent: 5231427 (1993-07-01), Ohashi

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electric field potential control device for an image forming app does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric field potential control device for an image forming app, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric field potential control device for an image forming app will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-328481

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.