GB1221347A - Electrophotographic development - Google Patents

Electrophotographic development

Info

Publication number
GB1221347A
GB1221347A GB01762/68A GB1176268A GB1221347A GB 1221347 A GB1221347 A GB 1221347A GB 01762/68 A GB01762/68 A GB 01762/68A GB 1176268 A GB1176268 A GB 1176268A GB 1221347 A GB1221347 A GB 1221347A
Authority
GB
United Kingdom
Prior art keywords
layer
image
toner particles
photo
development
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
GB01762/68A
Inventor
William Caughey York
James Gordon Jarvis
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1221347A publication Critical patent/GB1221347A/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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/04—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process using photoelectrophoresis
    • 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
    • G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
    • G03G5/0601—Acyclic or carbocyclic compounds
    • G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
    • G03G5/0614—Amines
    • G03G5/06142—Amines arylamine
    • 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
    • G03G5/10—Bases for charge-receiving or other layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures

Abstract

1,221,347. Electro-photographic development. EASTMAN KODAK CO. March 11, 1968 [March 13, 1967], No. 11762/68. Heading G2H. A method of forming an electro-photographic image comprises imagewise exposing a photoconductive layer carried by an electrically conducting layer, electro-phoretically depositing toner particles on the image areas, and treating the photo-conductive layer in a manner which inhibits deposition of toner in non-image areas. In one embodiment, shown in Fig. 1, an image of a transparency 26 is projected on to the photoconductive layer 22 carried on a conductive layer 21, which is placed in and insulated from a metal developing cassette 10, and a field applied between layer 22 and a transparent development electrode 19 causes negatively charged toner particles 13, in an insulating organic liquid 12, to be deposited on the image areas. Toner deposition in non-image areas is inhibited by pre-charging layer 22, e.g. with a corona charger, or by a first development step using charged toner particles of low colour density, followed by development with toner particles of high colour density. In a second embodiment Fig.2 (not shown), the photo-conductive layer is exposed through a transparent conductive backing, and positively charged toner particles are used. In a contact printing embodiment Fig.3 (not shown) a pre-charged photo-conductive belt (37) is exposed to a source (34), the image electrophoretically developed by contacting the surface of a developer (11) and the developed image transferred to a paper web (43). The photo-conductive layer 22 may be organic, e. g. a triphenylamine compound or inorganic e.g. selenium, the conductive backing layer 21 may be aluminium or transparent, conducting cellulose acetate, and the development electrode may be of Nesa glass. Many examples are given of toner preparation and composition.
GB01762/68A 1967-03-13 1968-03-11 Electrophotographic development Expired GB1221347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62249967A 1967-03-13 1967-03-13

Publications (1)

Publication Number Publication Date
GB1221347A true GB1221347A (en) 1971-02-03

Family

ID=24494396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB01762/68A Expired GB1221347A (en) 1967-03-13 1968-03-11 Electrophotographic development

Country Status (5)

Country Link
US (1) US3527684A (en)
BE (1) BE712127A (en)
DE (1) DE1622954A1 (en)
FR (1) FR1561533A (en)
GB (1) GB1221347A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839071A (en) * 1969-12-29 1974-10-01 Honeywell Inc Printing method
US3804660A (en) * 1970-08-17 1974-04-16 Commw Of Australia Dielectric recording on insulator surfaces
DE2154313C3 (en) * 1971-11-02 1981-07-02 Hoechst Ag, 6230 Frankfurt Electrostatographic recording process
US3808026A (en) * 1972-03-13 1974-04-30 Xerox Corp Liquid development of electrostatic latent image
US3836381A (en) * 1972-10-02 1974-09-17 Secretary Supply Australia Method of developing a dielectric pattern on a semiconductor surface using a two-component developer
US4496432A (en) * 1983-06-27 1985-01-29 At&T Technologies, Inc. Electrolytic methods for enhancing contrast between metallic surfaces
US6194108B1 (en) * 1996-10-17 2001-02-27 Fuji Xerox Co., Ltd. Image forming method and image forming device using same
US7050146B2 (en) 2004-02-09 2006-05-23 Asml Netherlands B.V. Lithographic apparatus and device manufacturing method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB873080A (en) * 1957-04-05 1961-07-19 Commw Of Australia Improved method of producing images by wet xerographic processes
DE1141180B (en) * 1958-01-13 1962-12-13 Commonwealth von Australien, Melbourne (Australien) Process for image production in xerography
US3140945A (en) * 1959-06-19 1964-07-14 Commw Of Australia Electrostatic printing
US3346475A (en) * 1963-02-25 1967-10-10 Australia Res Lab Electrophotographic method using an unsymmetrical ac current during development
US3448030A (en) * 1965-06-28 1969-06-03 Xerox Corp Electrically photosensitive particles useful in photoelectrophoretic and xerographic imaging processes

Also Published As

Publication number Publication date
US3527684A (en) 1970-09-08
FR1561533A (en) 1969-03-28
BE712127A (en) 1968-07-15
DE1622954A1 (en) 1970-12-03

Similar Documents

Publication Publication Date Title
GB1520281A (en) Electrophotographic recording apparatus
US3677751A (en) Polarity reversal electrophotography
GB1129164A (en) Method and apparatus for making electrographs
GB1241439A (en) Method of electrophotography
GB1240293A (en) Electrophotographic apparatus and method
US3240596A (en) Electrophotographic processes and apparatus
GB1249210A (en) A method of forming electrostatic latent images
GB1221347A (en) Electrophotographic development
GB1405201A (en) Electrophotographic apparatus
US3890040A (en) Induction imaging apparatus
US4524117A (en) Electrophotographic method for the formation of two-colored images
US3285740A (en) Electrophotographic process
US3650622A (en) Apparatus for control of bias potential in an electrophotographic copier
GB1453133A (en) Method of and apparatus for duplicating photographic images
GB1168268A (en) Improvements in or relating to Lithographic Plates
JPS5919335B2 (en) electrophotography
US3666365A (en) Electrophotographic process and apparatus involving persistent internal polarization
US3877934A (en) Induction imaging with in-place development
US4112172A (en) Dielectric imaging member
US3975635A (en) Xeroradiographic plate
US3783352A (en) Developing method for electrophotography
US4064514A (en) Portable camera
GB1283808A (en) Method of colour electrophotography
US3625681A (en) Method of liquid developing a photoconductive plate
US3796570A (en) Electrophotographic,contact-printing process employing a dielectric liquid layer