EP0403314A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Color image forming apparatus
Assignee: Konica Minolta Inc
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Filing: 1990-06-18
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Granted: —
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Expires: 2010-06-18
Abstract
Abstract The invention provides a color image forming apparatus with photoreceptor belt (1). The photoreceptor belt (1) is provided with two rotatable rollers (2,3) and a guide plate (4) with a curved surface so that the photoreceptor belt (1) is moved while slidabley coming in contact with the curved surface of the guide plate (4). Along the outer surface of the photoreceptor belt (1) are provided a plurality of developing devices (8,9,10,11) at the curved surface to form a color toner image on the photoreceptor belt (1).
Inventors
- 👤 Satoshi C/O Konica Corporation Haneda
- 👤 Masakazu C/O Konica Corporation Fukuchi
- 👤 Shinji C/O Konica Corporation Matsuo
- 👤 Shizuo C/O Konica Corporation Morita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:30
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754; G03G15/01
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A color image forming apparatus including a photoreceptor belt extending around and between two rotatable rollers, guide means disposed between the rollers to guide the belt, and image forming means disposed opposite the belt to operate on the belt, wherein the guide means has a curved surface over which the belt passes between the guide means and an image forming means.
Claim 2
Dependent Claim
61 words
A color image forming apparatus including a photoreceptor belt extending around and between two rotatable rollers, guide means disposed between the rollers to guide the belt, and image forming means disposed opposite the belt to operate on the belt, wherein the guide means has a curved surface over which the belt passes between the guide means and an image forming means.
Claim 3
Dependent Claim
34 words
Apparatus according to claim 1 wherein the curved surface has a plurality of parts opposite image forming means, and is recessed or concave between such parts, such that the belt contacts only said parts.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 2 wherein said plurality of parts lie on the same curve.
Claim 5
Dependent Claim
16 words
Apparatus according to claim 2 wherein said plurality of parts are protruderances on the guide means.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4 wherein the guide means is curved and said protruderances have a smaller radius of curvature than the guide means.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 1 wherein the curved surface is continuous and has a single radius of curvature.
Claim 8
Dependent Claim
25 words
Apparatus according to claim 1 wherein the curved surface is continuous and has a smaller radius of curvature at one end that at the other.
Claim 9
Dependent Claim
25 words
Apparatus according to any preceding claim wherein the image forming means are developing means and are mounted to be in contact with the guide means.
Claim 10
Dependent Claim
34 words
Apparatus according to any preceding claim wherein the image forming means are developing means and including spacing means for supporting the image forming means to face the guide means with a predetermined space therebetween.
Claim 11
Dependent Claim
36 words
Apparatus according to claim 9 wherein there are support members at both sides of the photoreceptor belt and said spacing means includes a contacting member to contact said support members for positioning the image forming means.
Claim 12
Dependent Claim
34 words
Apparatus according to any preceding claim wherein the image forming means facing the curved surface include charging means, exposure means and developing means, and the apparatus includes charging means also facing the curved surface.
Claim 13
Dependent Claim
18 words
Apparatus according to claim 11 wherein the photoreceptor belt and charging means are formed in a detachable cartridge.
Claim 14
Dependent Claim
22 words
Apparatus according to any preceding claim wherein there are a plurality of developing means placed in parallel to face the photoreceptor belt.
References Cited (Backward Citations)
No citation records indexed.
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