EP0435640A2
Expired / Lapsed
EP
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Color image forming apparatus
Assignee: Konica Minolta Inc
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Filing: 1990-12-21
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Granted: —
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Expires: 2010-12-21
Abstract
Abstract A color image forming apparatus in which at least one registration mark (1a, 1b) is formed on a movable image retainer, and exposed by an exposing device (120, 220, 320, 420). A position of the registration mark (1a, 1b) is detected by a detecting device (FS1 - FS8, 52, 53) incorporating with said exposing device (120, 220, 320, 420) to generate a signal based on the detected position of the registration mark (1a, 1b). An exposing position of the exposing device (120, 220, 320, 420) is corrected by a correcting device (500, 550) in accordance with the signal to form a latent image on the image retainer (1).
Inventors
- 👤 Satoshi Haneda
- 👤 Masakazu Fukuchi
- 👤 Shizuo Morita
- 👤 Shunji Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:42
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/047; H04N1/46; H04N1/50; H04N1/506; H04N1/113; H04N1/1135; H04N1/12; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N2201/00; H04N2201/024; H04N2201/02406; H04N2201/02416; H04N2201/04; H04N2201/047; H04N2201/04701; H04N2201/0471; H04N2201/04715; H04N2201/04722; H04N2201/04729; H04N2201/04731; H04N2201/04732; H04N2201/04744; H04N2201/04753; H04N2201/04755; H04N2201/04758; H04N2201/04767; H04N2201/04781; H04N2201/04784; H04N2201/04789; H04N2201/04791
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A color image forming apparatus comprising: a movable image retainer (1) having at least one registration mark (1a, 1b) thereon; an exposing means (120, 220, 320, 420) to expose said registration mark (1a, 1b) thereon; means (FS1 - FS8, 52, 53) for detecting a position of said registration mark (1a, 1b) by incorporating with said exposing means (120, 220, 320, 420), to generate a signal based on said detected position of said registration mark (1a, 1b); and means (500, 550) for correcting an exposing position of said exposing means (120, 220, 320, 420) in accordance with said signal to form a latent image on said image retainer (1).
Claim 2
Dependent Claim
14 words
The apparatus of claim 1, wherein said image retainer (1) is of belt-shaped type.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1, wherein said exposing position is related to a scanning direction of said exposing means (120, 220, 320, 420).
Claim 4
Dependent Claim
20 words
The apparatus of claim 1, wherein said exposing position is related to a moving direction of said image retainer (1).
Claim 5
Dependent Claim
114 words
A color image forming apparatus comprising: a movable image retainer (1) having at least one registration mark (1a, 1b) thereon; a plurality of exposing means (120, 220, 320, 420) to expose said registration mark (1a, 1b) thereon; means (FS1 - FS8, 52, 53) for detecting a position of said registration mark (1a, 1b) by incorporating with each of said exposing means (120, 220, 320, 420), to generate a signal based on said detected position of said registration mark (1a, 1b); and means (500, 550) for correcting an exposing position of each of said exposing means (120, 220, 320, 420) in accordance with said signal to form latent images on said image retainer (1a, 1b).
Claim 6
Dependent Claim
14 words
The apparatus of claim 5, wherein said image retainer (1) is of belt-shaped type.
Claim 7
Dependent Claim
23 words
The apparatus of claim 5, wherein said exposing position is related to a scanning direction of said exposing means (120, 220, 320, 420).
Claim 8
Dependent Claim
20 words
The apparatus of claim 5, wherein said exposing position is related to a moving direction of said image retainer (1).
Claim 9
Dependent Claim
59 words
The apparatus of claim 5, wherein said at least one registration mark (1a, 1b) comprises two registration marks (1a, 1b) provided on both sides of said image retainer (1) in a right-angle direction of a moving direction thereof, and said correcting means (500, 550) comprises means for changing alignment of each of said exposing means (120, 220, 320, 420).
References Cited (Backward Citations)
No citation records indexed.
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