Conductive roller transfer device with improved transfer efficie

Details Conductive roller transfer device with improved transfer efficie Conductive roller transfer device with improved transfer efficie

1992-07-06

1994-07-19

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355219, G03G 1516

Patent

active

053313836

ABSTRACT:
A toner image transferring device has a roller formed of a conductive rubber foam material having a resistivity of more than 10.sup.7 .OMEGA.cm. In a toner image transferring process, a constant current is applied to the roller, whereby a charged toner image can be transferred to a sheet or paper at a desired toner transfer efficiency regardless of a size of the paper or sheet. To remove a toner pollution of the roller, a constant voltage having a polarity opposite to that of the charged toner is applied to the roller. The roller is constituted such that pore openings appear over a surface of the roller, whereby a residual part of a toner polluting the roller will not leave a stain on a rear surface of the sheet or paper.

REFERENCES:
patent: 3781105 (1973-12-01), Meagher
patent: 4309803 (1982-01-01), Blaszak
patent: 4959688 (1990-09-01), Koitabashi
patent: 5034777 (1991-07-01), Ohzeki et al.
patent: 5151736 (1992-09-01), Ohzeki et al.
patent: 5179397 (1993-01-01), Ohzeki et al.
patent: 5182604 (1993-01-01), Asai
patent: 5196885 (1993-03-01), Takeuchi et al.
European Search Report.

Affiliated with

Also associated with

Rating

Conductive roller transfer device with improved transfer efficie does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-523872