Photocopying – Contact printing – Light boxes
Patent
1992-04-16
1994-03-01
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
355271, 355272, 355274, G03G 1516
Patent
active
052912540
ABSTRACT:
In an electrophotographic recording apparatus, toner images of different colors formed on a photosensitive belt are transferred in overlapping fashion to an intermediate transfer drum to form a color toner image and the color toner image is transferred to a secondary recording medium by means of a transfer unit and then fixed. The intermediate transfer drum includes an electrically conductive drum substrate and a dielectric layer whose resistance is adjusted to a predetermined range, and the drum substrate is connected to earth potential so that setting of an electric field for toner image transfer from the photosensitive belt may not interfere with setting of an electric field for toner image transfer by the transfer unit. Efficiencies of transfer at the two transfer sections can be improved to provide a color image of high quality and the apparatus can be reduced in size.
REFERENCES:
patent: 3838919 (1974-10-01), Takahashi
patent: 4341455 (1982-07-01), Fedder
patent: 4348098 (1982-09-01), Koizumi
patent: 4607940 (1986-08-01), Quang
patent: 4896192 (1990-01-01), Kinoshita
patent: 4931839 (1990-06-01), Tompkins et al.
patent: 5001516 (1991-03-01), Maruyama et al.
patent: 5010370 (1991-04-01), Araya et al.
patent: 5040028 (1991-08-01), Kamimura et al.
patent: 5041878 (1991-08-01), Takai et al.
patent: 5053827 (1991-10-01), Tompkins et al.
patent: 5070370 (1991-12-01), Bellis
patent: 5084735 (1992-01-01), Rimai et al.
Patent Abstracts of Japan; Appl. Pub. No. 59-050474; Pub. Date Mar. 23, 1984; Gp. P287; Kiyoshi, K et al.; "Recorder".
Patent Abstracts of Japan; Appl. Pub. No. 57-195258; Pub. Date Nov. 30, 1982; Gp. P178; Kenya, K; "Electrostatic Recorder".
Patent Abstracts of Japan; Appl. Pub. No. 63-311263; Pub. Date Dec. 20, 1988; Gp. P855; Takahiro, N et al.; "Intermediate Transfer Body".
Kitagishi Tomoji
Saito Masahiko
Shimada Akira
Terashima Isamu
Wakamatsu Kazuhiro
Hitachi , Ltd.
Smith Matthew S.
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