Photocopying – Contact printing – Light boxes
Patent
1993-08-24
1994-08-16
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
118652, 355215, 355 30, 430125, G03G 2100
Patent
active
053391381
ABSTRACT:
An electrophotographic image formation method using an electrophotographic photoconductor composed of an electroconductive support, and a photoconductive layer including a charge generation layer and a charge transport layer which are successively overlaid on the support, having the steps of charging the surface of the electrophotographic photoconductor uniformly to a predetermined polarity, exposing the charged surface of the photoconductor to light images to form electrostatic latent images thereon, developing the electrostatic latent images to visible toner images by a developer, transferring the toner images to an image-receiving medium, and cleaning the surface of the photoconductor, with the concentration of ozone in the ambient atmosphere around the photoconductor being controlled in the range from 5 to 50 ppm, and the abrasion of the photoconductive layer being controlled to 300 .ANG. or less per 1000 revolutions of the photoconductor.
REFERENCES:
patent: 4401385 (1983-08-01), Katayama et al.
patent: 5155531 (1992-10-01), Kurotori et al.
patent: 5164778 (1992-11-01), Tanabe et al.
patent: 5185629 (1993-02-01), Iino et al.
patent: 5250990 (1993-10-01), Fujimura et al.
patent: 5264903 (1993-11-01), Nagame et al.
Fukagai Toshio
Inoue Tomohiro
Kawasaki Yoshiaki
Kishi Hiroyuki
Mishima Naoshi
Ricoh & Company, Ltd.
Smith Matthew S.
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