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GB1361688A - Electrophotographic process - Google Patents

Electrophotographic process

Info

Publication number
GB1361688A
GB1361688A GB6052971A GB6052971A GB1361688A GB 1361688 A GB1361688 A GB 1361688A GB 6052971 A GB6052971 A GB 6052971A GB 6052971 A GB6052971 A GB 6052971A GB 1361688 A GB1361688 A GB 1361688A
Authority
GB
United Kingdom
Prior art keywords
discharge
insulating layer
photo
polarity
layer
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
GB6052971A
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial Co Ltd
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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of GB1361688A publication Critical patent/GB1361688A/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
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
    • G03G5/0433—Photoconductive layers characterised by having two or more layers or characterised by their composite structure all layers being inorganic
    • 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
    • G03G15/226—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 where the image is formed on a dielectric layer covering the photoconductive layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • G03G5/147—Cover layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
    • Y10S430/102—Electrically charging radiation-conductive surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

1361688 Electro-photographic processes MITA INDUSTRIAL CO Ltd 29 Dec 1971 [29 Dec 1970] 60529/71 Heading G2H [Also in Division H1] An electro-photographic process utilizes a member comprising a conductive base, a photoconductive layer and a surface insulating layer (optionally with an intermediate insulating layer disposed within the photo-conductive layer or between the photo-conductive layer and the conductive base) and comprises: (a) uniformly electrostatically charging the surface insulating layer using a D. C. corona discharge (b) imagewise exposing the surface and simultaneously (or immediately thereafter) uniformly electrostatically charging the surface with an A. C. corona discharge of asymmetric waveform, the major component of the waveform being of the opposite polarity to that of the D. C. discharge (c) dissipating the electrostatic charge remaining at the interface between the surface insulating layer and the photo-conductive layer, by uniformly exposing the surface or by allowing sufficient time to elapse before developing. This produces an electrostatic latent image in which the non-imagewise exposed areas D bear charge 6' of the same polarity as that of the D. C. discharge and the exposed areas L bear charge 6" of the opposite polarity. This latent image may be developed with toner 6' t charged to either polarity to produce a background-free positive or negative copy. Circuits for producing the asymmetric discharge are described Figs. 5-8 (not shown).
GB6052971A 1970-12-29 1971-12-29 Electrophotographic process Expired GB1361688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45121544A JPS495466B1 (en) 1970-12-29 1970-12-29

Publications (1)

Publication Number Publication Date
GB1361688A true GB1361688A (en) 1974-07-30

Family

ID=14813861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6052971A Expired GB1361688A (en) 1970-12-29 1971-12-29 Electrophotographic process

Country Status (6)

Country Link
US (1) US3775104A (en)
JP (1) JPS495466B1 (en)
DE (1) DE2165360A1 (en)
FR (1) FR2121091A5 (en)
GB (1) GB1361688A (en)
IT (1) IT944495B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980475A (en) * 1972-07-27 1976-09-14 La Cellophane Process of transferring an electrostatic latent image to a dielectric support
JPS5712986B2 (en) * 1972-07-31 1982-03-13
JPS5522788B2 (en) * 1973-05-15 1980-06-19
US3992204A (en) * 1973-08-06 1976-11-16 Minnesota Mining And Manufacturing Company Method and medium for producing electrostatic charge patterns
US3942080A (en) * 1974-04-05 1976-03-02 Scott Paper Company Method and apparatus for applying a uniform electrostatic charge to electrophotographic film
US3970546A (en) * 1974-06-04 1976-07-20 Carpco, Inc. Method and apparatus for separating non-ferrous metal from waste material
JPS5516288B2 (en) * 1974-11-07 1980-05-01
US3956524A (en) * 1974-12-04 1976-05-11 Xerox Corporation Method for the preparation of electrostatographic photoreceptors
JPS51126875U (en) * 1975-04-09 1976-10-14
US4106933A (en) * 1975-06-18 1978-08-15 Minnesota Mining And Manufacturing Company Piezoelectric method and medium for producing electrostatic charge patterns
GB1554266A (en) * 1975-07-14 1979-10-17 Xerox Corp Corona charging device
JPS5252641A (en) * 1975-10-25 1977-04-27 Mita Ind Co Ltd Corona discharge device
JPS5264936A (en) * 1975-11-25 1977-05-28 Canon Inc Apparatus for electronic photography
JPS5276036A (en) * 1975-12-22 1977-06-25 Canon Inc Method for image formation
US4271451A (en) * 1976-07-20 1981-06-02 Hercules Incorporated Method and apparatus for controlling static charges
JPS5398838A (en) * 1977-02-09 1978-08-29 Canon Inc Electrophotographic device
US4063945A (en) * 1977-02-17 1977-12-20 Xerox Corporation Electrostatographic imaging method
JPS53112736A (en) * 1977-03-14 1978-10-02 Fuji Photo Film Co Ltd Photoelectrophoresis photography method
US4410616A (en) * 1982-05-10 1983-10-18 Xerox Corporation Multi-layered ambipolar photoresponsive devices for electrophotography
JPS5997163A (en) * 1982-11-27 1984-06-04 Olympus Optical Co Ltd Electrophotographic method
JPS5997161A (en) * 1982-11-27 1984-06-04 Olympus Optical Co Ltd Electrophotographic method
US5162189A (en) * 1989-12-27 1992-11-10 Eastman Kodak Company Toner image pressure transfer method and toner useful therefor
DE10335565A1 (en) * 2003-07-31 2005-05-19 Infineon Technologies Ag Method for checking periodic structures on lithographic masks

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457070A (en) * 1964-07-25 1969-07-22 Matsuragawa Electric Co Ltd Electrophotography
US3536483A (en) * 1964-10-20 1970-10-27 Katsuragawa Denki Kk Method of making electrographs wherein the resultant electrostatic image is not effected by further light exposure
JPS4223910B1 (en) * 1965-08-12 1967-11-17
US3666364A (en) * 1965-12-01 1972-05-30 Canon Kk Electrophotographic apparatus
US3615395A (en) * 1966-09-28 1971-10-26 Canon Camera Co Electrostatic and electrophotographic variable contrast image-forming methods
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
SE350136B (en) * 1967-09-05 1972-10-16 Katsuragawa Denki Kk
JPS4813455B1 (en) * 1968-11-05 1973-04-27
US3677751A (en) * 1968-11-30 1972-07-18 Ricoh Kk Polarity reversal electrophotography

Also Published As

Publication number Publication date
IT944495B (en) 1973-04-20
DE2165360B2 (en) 1975-04-03
DE2165360A1 (en) 1972-07-27
JPS495466B1 (en) 1974-02-07
US3775104A (en) 1973-11-27
FR2121091A5 (en) 1972-08-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
433D Application made for revocation (sect. 33/1949)
433C Case decided by the comptroller ** specification amended (sect. 33/1949)
433L Application made to the patents court (sect. 33/1949)
433M Application made to the patents court ** appeal dismissed (sect. 33/1949)
SP Amendment (slips) printed
PE20 Patent expired after termination of 20 years