Image transferring device for image forming equipment

Details Image transferring device for image forming equipment Image transferring device for image forming equipment

1994-10-19

1996-09-17

Beatty, Robert

Photocopying

Contact printing

Light boxes

G03G 1516

Patent

active

055573843

ABSTRACT:
An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element and from being incompletely separated from a transfer belt. A transfer bias and discharge are effected to prevent changes in the resistances of the transfer belt and sheet ascribable to changes in environment front translating into changes in a current to flow to the photoconductive element, and to efficiently dissipate a charge deposited on the belt. Various members constituting the device are positioned relative to one another such that the discharging effect is achievable most effectively while preventing the transfer bias from causing dielectric breakdown in any constituent part. A bias roller is held in contact with the transfer belt which is made of a dielectric material. A current I.sub.OUT to flow frown the bias roller to ground via a nip portion between the belt and an image carrier and the image carrier is maintained greater than or equal to a current I.sub.2 to flow from the contact electrode to ground via the belt without the intermediary of the nip portion.

REFERENCES:
patent: 3647292 (1972-03-01), Weikel, Jr.
patent: 3830589 (1974-08-01), Allen
patent: 3832053 (1974-08-01), Goel et al.
patent: 4162843 (1979-07-01), Inoue et al.
patent: 4220699 (1980-09-01), Ishida et al.
patent: 4268157 (1981-05-01), Ebi et al.
patent: 4407580 (1983-10-01), Hashimoto et al.
patent: 4411977 (1983-10-01), Tarumi et al.
patent: 5138363 (1992-08-01), Yuge
patent: 5140376 (1992-08-01), Gotoda et al.
patent: 5148224 (1992-09-01), Yamada et al.
patent: 5153653 (1992-10-01), Fuma et al.
patent: 5172173 (1992-12-01), Goto et al.
patent: 5182598 (1993-01-01), Hara et al.
patent: 5198863 (1993-03-01), Goto et al.
patent: 5268725 (1993-12-01), Koga et al.
patent: 5291253 (1994-03-01), Kumasaka et al.
patent: 5300984 (1994-04-01), Fuma et al.
patent: 5386274 (1995-01-01), Sanpe et al.
Patent Abstracts of Japan, vol. 5, No. 134 (P-077), Aug. 26, 1981, JP-A-56 069653, Jun. 11, 1981.
Patent Abstracts of Japan, vol. 15, No. 218 (P-1210), Jun. 4, 1991, JP-A-03 062077, Mar. 18, 1991.
Patent Abstracts of Japan, vol. 14, No. 332 (P-1077), Jul. 17, 1990, JP-A-02 110586, Apr. 23, 1990.

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