EP0251816A1
Expired / Lapsed
EP
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Image forming method and apparatus therefor
Assignee: Konica Minolta Inc
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Filing: 1987-07-03
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Granted: —
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Expires: 2007-07-03
Abstract
Abstract An image forming method wherein a latent image is formed by one of plurality of latent image forming devices (21, 22) and developed by one of plurality of developing devices (35, 36, 37), these devices are sequentially arranged in face of an image retainer (1). The above steps are repeated to form an image. At least one of the latent image forming device is used two times to form an image.
Inventors
- 👤 Masakazu Konishiroku Photo Ind. Co Ltd. Fukuchi
- 👤 Satoshi Konishiroku Photo Ind. Co Ltd. Haneda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:56
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
An image forming method comprising the steps of forming latent images using a plurality of latent image forming means (2l, 22), and developing said latent images using a plurality of developing means (3l-37), wherein at least one of the latent image forming means is used more than once in the formation of each image.
Claim 2
Dependent Claim
54 words
An image forming method comprising the steps of forming latent images using a plurality of latent image forming means (2l, 22), and developing said latent images using a plurality of developing means (3l-37), wherein at least one of the latent image forming means is used more than once in the formation of each image.
Claim 3
Dependent Claim
38 words
An image forming method according to claim l, wherein a plurality of toner images are formed on an image retainer (l) by such latent image formation and development, and then transferred at once to a transfer paper (P).
Claim 4
Dependent Claim
17 words
An image forming method according to claim 2, wherein said image retainer (l) is a photosensitive member.
Claim 5
Dependent Claim
25 words
An image forming method according to claim 2 or 3, wherein said plural toner images are color toner images different in color from one another.
Claim 6
Dependent Claim
22 words
An image forming method according to any preceding claim wherein said latent images are formed by charging means and laser beam scanning.
Claim 7
Dependent Claim
18 words
An image forming method according to any preceding claim wherein said developing is reverse developing or non-contact developing.
Claim 8
Dependent Claim
40 words
An image forming method according to claim 5 or 6, wherein said developing is carried out by using a two-component developer having a toner and an insulating carrier having resistivity of more than l0⁸Ω cm under an oscillating electric field.
Claim 9
Dependent Claim
68 words
An image forming apparatus comprising: first latent image forming means (2l), developing means at a first developing station (3l, 35), second latent image forming means (22), and developing means at a second developing station (33, 36): such means being sequentially arranged by the face of an image retainer (l), wherein there is a plurality of developers, for instance two developers, at at least one of the developing stations.
Claim 10
Dependent Claim
68 words
An image forming apparatus comprising: first latent image forming means (2l), developing means at a first developing station (3l, 35), second latent image forming means (22), and developing means at a second developing station (33, 36): such means being sequentially arranged by the face of an image retainer (l), wherein there is a plurality of developers, for instance two developers, at at least one of the developing stations.
Claim 11
Dependent Claim
21 words
An image forming apparatus according to claim 8 further comprising third latent image forming means (23) and third developing means (33).
Claim 12
Dependent Claim
26 words
l0. An image forming apparatus according to claim 8 or 9 wherein said first developing means (33, 36) are used for reverse development or non-contact development.
Claim 13
Dependent Claim
122 words
An image forming method comprising the steps of: forming a first latent image by using first latent image forming means (2l), developing said first latent image by using first developing means (3l), forming a second latent image by using second latent image forming means (22), developing said second latent image by using said developing means (32), forming a third latent image by using said first latent image forming means (2l), developing said third latent image by using third developing means (33), forming a fourth laent image by using said second latent image forming means (32), developing said fourth latent image by using fourth developing means (23), and then transferring toner images formed on an image retainer (l) to a transfer member (P).
Claim 14
Dependent Claim
122 words
An image forming method comprising the steps of: forming a first latent image by using first latent image forming means (2l), developing said first latent image by using first developing means (3l), forming a second latent image by using second latent image forming means (22), developing said second latent image by using said developing means (32), forming a third latent image by using said first latent image forming means (2l), developing said third latent image by using third developing means (33), forming a fourth laent image by using said second latent image forming means (32), developing said fourth latent image by using fourth developing means (23), and then transferring toner images formed on an image retainer (l) to a transfer member (P).
References Cited (Backward Citations)
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