EP0377315A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image forming apparatus
Assignee: Toshiba Tec Corp
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Filing: 1989-12-22
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Granted: —
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Expires: 2009-12-22
Abstract
Abstract In the image forming apparatus of the present invention, printing stations (18) are provided in positions opposed to an endless paper conveying belt (2), and an electric charger (16) is disposed close and opposedly to a conveyance roller (14) and on a downstream side of the conveyance roller with respect to a conveyance direction which conveyance roller (11) is disposed in a conveyance start position of the paper conveying belt (2), to maintain the surface potential of each recording paper (14) in good condition, whereby it is made possible to prevent the deterioration of the image quality, diminish the power consumption and attain the reduction in size of the apparatus.
Inventors
- 👤 Yoshihiro Torisawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
G; G03; G03G; G03G13/00; G03G15/00; G03G15/14; G03G15/16; G03G15/1695; G03G15/01; G03G15/0105; G03G15/0131
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
In an electrophotographic type image forming apparatus having at least one printing station in a position opposed to an endless paper conveying belt stretched in the interior of the apparatus, the improvement characterized in that an electric charger is disposed close and opposedly to a conveyance roller and on a downstream side of said conveyance roller with respect to a conveyance direction which conveyance roller is disposed in a conveyance start position of said paper conveying belt opposedly to said belt.
Claim 2
Dependent Claim
81 words
In an electrophotographic type image forming apparatus having at least one printing station in a position opposed to an endless paper conveying belt stretched in the interior of the apparatus, the improvement characterized in that an electric charger is disposed close and opposedly to a conveyance roller and on a downstream side of said conveyance roller with respect to a conveyance direction which conveyance roller is disposed in a conveyance start position of said paper conveying belt opposedly to said belt.
Claim 3
Dependent Claim
36 words
An image forming apparatus according to Claim 1, wherein a plurality of printing stations are disposed along said paper conveying belt, of which at least a first printing station is not provided with a transfer roller.
Claim 4
Dependent Claim
32 words
An image forming apparatus according to Claim 1, wherein a plurality of printing stations are disposed along said paper conveying belt, none of said printing stations being provided with a transfer roller.
Claim 5
Dependent Claim
31 words
An image forming apparatus according to Claim 1, wherein a counter electrode connected to a frame ground is disposed in opposed relation to said electric charger through said paper conveying belt.
Claim 6
Dependent Claim
91 words
An image forming apparatus including: an endless paper conveying belt having a dielectric layer as a surface layer and an electroconductive layer as a reverse-side layer; an electric charger disposed close and opposedly to a conveyance roller and on a downstream side of said conveyance roller with respect to a conveyance direction which conveyance roller is disposed in a conveyance start position of said paper conveying belt; and a plurality of printing stations not provided with transfer rollers, said printing stations being disposed in opposed relation to said paper conveying belt.
Claim 7
Dependent Claim
91 words
An image forming apparatus including: an endless paper conveying belt having a dielectric layer as a surface layer and an electroconductive layer as a reverse-side layer; an electric charger disposed close and opposedly to a conveyance roller and on a downstream side of said conveyance roller with respect to a conveyance direction which conveyance roller is disposed in a conveyance start position of said paper conveying belt; and a plurality of printing stations not provided with transfer rollers, said printing stations being disposed in opposed relation to said paper conveying belt.
Claim 8
Dependent Claim
21 words
An image forming apparatus according to Claim 1 or Claim 5, wherein said conveyance roller is insulated from a frame ground.
References Cited (Backward Citations)
No citation records indexed.
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