Patent DE693295C successfully refreshed from Google Patents.
Patent EP0271052A2 successfully refreshed from Google Patents.
EP0271052A2
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EP
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Color image forming apparatus
Assignee: Konica Minolta Inc
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Filing: 1987-12-08
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Granted: —
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Expires: 2007-12-08
Abstract
Abstract A color image forming apparatus wherein a document (D) is scanned optically by a color image reading device to form color separating informations of the document (D), and color informations are formed based on the color separating informations and applied through a plurality of image forming devices (31, 32, 33, 34) on an image retainer (1), so that a color image is formed on the image retainer (1) while the image retainer (1) is rotated plural times.
Inventors
- 👤 Masakazu Fukuchi
- 👤 Satoshi U Haneda
- 👤 Hisashi Shoji
- 👤 Kunihisa Yoshino
- 👤 Yoshiyuki Ichihara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163; H; H04; H04N; H04N1/00; H04N1/04; H04N1/113; H04N1/1135; H04N1/46; H04N1/50; H04N1/506
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
72 words
A color image forming apparatus comprising color image reading means for scanning optically document (D), means for forming color informations based on color separating informations applied from said reading means, and a plurality of image forming means (21, 22, 31, 32, 33, 34) for applying said color informations on an image retainer (1), wherein a color image is formed on said image retainer (1) by plural rotations of said image retainer (1).
Claim 2
Dependent Claim
72 words
A color image forming apparatus comprising color image reading means for scanning optically document (D), means for forming color informations based on color separating informations applied from said reading means, and a plurality of image forming means (21, 22, 31, 32, 33, 34) for applying said color informations on an image retainer (1), wherein a color image is formed on said image retainer (1) by plural rotations of said image retainer (1).
Claim 3
Dependent Claim
20 words
The color image forming apparatus according to Claim 1, wherein plural image formations are accomplished in accordance with single scanning.
Claim 4
Dependent Claim
72 words
The color image forming apparatus according to Claim 2, wherein said plural image forming means (21, 22, 31, 32, 33, 34) each has latent image forming means (21, 22) and developing means (31, 32, 33, 34) for developing a latent image formed by said latent image forming means (21, 22), and at least one of said plural latent image forming means (21, 22) is used repeatedly when the color image is formed.
Claim 5
Dependent Claim
70 words
The color image forming apparatus according to Claim 3, wherein a first latent image forming means (21), a first developing means (31, 32), a second latent image forming means (22) and a second developing means (33, 34) are aranged in this order around said image retainer (1), and at least one of said first and second developing means (33, 34) has a plurality of developing devices (31, 32, 33, 34).
Claim 6
Dependent Claim
45 words
The color image forming apparatus according to Claim 4, wherein said first and second latent image forming means (21, 22) are optical systems comprising a laser beam source (121, 221) respectively, and at least one of optical elements is used in common with each other.
Claim 7
Dependent Claim
20 words
The color image forming apparatus according to Claim 5, wherein a rotary polygon mirror (123, 223) is used in common.
Claim 8
Dependent Claim
18 words
The color image forming apparatus according to Claim 5, wherein an f-ϑ lens (124,224) is used in common.
Claim 9
Dependent Claim
21 words
The color image forming apparatus according to Claim 5, wherein said f-ϑ lenses (124, 224) are arranged separately and in parallel.
Claim 10
Dependent Claim
26 words
The color image forming apparatus according to Claim 4, wherein said plural developing devices (31, 32, 33, 34) are arranged in one case (532) removably therefrom.
Claim 11
Dependent Claim
64 words
The color image forming appartus according to Claim 4, wherein driving sources (546, 547) of said first and second developing means (31, 32, 33, 34) are made separately, and wherein said plural developing devices (31, 32, 33, 34) in said first or second developing means have one of said driving sources (546, 547) in common and are driven by switching with a clutch respectively.
Claim 12
Dependent Claim
63 words
A color image forming apparatus according to Claim 4, wherein developing bias power sources (139, 552, 553) of said first and second developing means are made separately, and wherein said plural developing devices (31, 32, 33, 34) in said first or second developing means have one of said developping bias power sources (139, 552, 553) in common and are supplied by switching respectively.
Claim 13
Dependent Claim
19 words
The color image forming apparatus according to Claim 6, wherein an f-ϑ lens (124, 224) is used in common.
Claim 14
Dependent Claim
20 words
The color image forming apparatus according to Claim 6, wherein said f-ϑlenses (124, 224) are arranged separately and in parallel.
Claim 15
Dependent Claim
63 words
The color image forming apparatus according to Claim 10, wherein developing bias power sources (139, 552, 553) of said first and second developing means are made separately, and wherein said plural developing devices (31, 32, 33, 34) in said first or second developing means have one of said developing bias power sources (139, 552, 553) in common and are supplied by switching respectively.
References Cited (Backward Citations)
No citation records indexed.
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