GB1139256A - Electrophotographic process and device - Google Patents

Electrophotographic process and device

Info

Publication number
GB1139256A
GB1139256A GB3584166A GB3584166A GB1139256A GB 1139256 A GB1139256 A GB 1139256A GB 3584166 A GB3584166 A GB 3584166A GB 3584166 A GB3584166 A GB 3584166A GB 1139256 A GB1139256 A GB 1139256A
Authority
GB
United Kingdom
Prior art keywords
master
image
electrode
powder
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3584166A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of GB1139256A publication Critical patent/GB1139256A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/228—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 the process involving the formation of a master, e.g. photocopy-printer machines

Abstract

1,139,256. Printing processes. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 10 Aug., 1966, No. 35841/66. Heading B6C. [Also in Division C2] A master copy for electrostatic printing is prepared by feeding a photoconductive paper sheet 28 on to a rotatable drum 2 by rollers-35, 36, clamping it on to the drum by cam-operated clips or pawls 4, 5, uniformly charging it by an electrode 11, exposing it to the image of an original 14 formed by a scanning optical system consisting of light sources 15, a lens 16 and mirrors 17, developing the latent image formed with an insulating powder applied by a brush 12, and fixing the developed image on the paper using a heater 24. The thus prepared master is then recycled around the drum at a faster speed to print copies on transfer sheets 18. The master is cleaned by a lamp 7, an electrode 8, a brush 9 and an eraser lamp 10, uniformly charged by-electrode, 11 uniformly exposed by light sources 15 to discharge the uncovered (i.e. non image areas) of the master, and dusted with powder using brush 12 so that powder adheres to the charged (i.e. image) areas of the master. The powder image thus formed is transferred to a transfer paper 18 fed from a stack by fixed troller 40, 19 and 19<SP>1</SP>, and a movable roller 20, under the field produced by a movable electrode 13; the master and-transfer paper are separated by applying a partial vacuum to the latter using a movable perforated roller 21; and the image on the transfer sheet is fixed by a heater 22. The master is recycled, to produce further printed copies, for a predetermined number of cycles, after which the clips 4 and 5 are released so that the master is fed into a receptacle 27 by guides 25, 26. Reference is made to the use of the apparatus to produce a small number of copies by the electrophotographic processes, to the use of masters for printing which have not been prepared in the apparatus, and to cleaning used masters for reuse by removing the fixed image by solvent.
GB3584166A 1965-08-11 1966-08-10 Electrophotographic process and device Expired GB1139256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4840565 1965-08-11

Publications (1)

Publication Number Publication Date
GB1139256A true GB1139256A (en) 1969-01-08

Family

ID=12802376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3584166A Expired GB1139256A (en) 1965-08-11 1966-08-10 Electrophotographic process and device

Country Status (2)

Country Link
DE (1) DE1522653A1 (en)
GB (1) GB1139256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083102A2 (en) * 1981-12-30 1983-07-06 Roneo Alcatel Limited Improvements in or relating to electrostatographic copying and duplicating

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774907A (en) * 1971-09-16 1973-11-27 Xerox Corp Vacuum sheet stripping apparatus
JPS5265450A (en) * 1975-11-26 1977-05-30 Ricoh Co Ltd Method and apparatus for removing electricity for cleaning means of li ght sensitive body
US4175958A (en) * 1976-12-23 1979-11-27 Toppan Printing Co., Ltd. Dry planographic printing method and plate made by electrophotographic method using conductive toner
JPS5381237A (en) * 1976-12-27 1978-07-18 Minolta Camera Co Ltd Photosensitivity control of photosensitive body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083102A2 (en) * 1981-12-30 1983-07-06 Roneo Alcatel Limited Improvements in or relating to electrostatographic copying and duplicating
EP0083102A3 (en) * 1981-12-30 1984-03-21 Roneo Alcatel Limited Improvements in or relating to electrostatographic copying and duplicating

Also Published As

Publication number Publication date
DE1522653A1 (en) 1969-11-20

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