GB1328374A - Electrophotographic copying process - Google Patents

Electrophotographic copying process

Info

Publication number
GB1328374A
GB1328374A GB4000370A GB4000370A GB1328374A GB 1328374 A GB1328374 A GB 1328374A GB 4000370 A GB4000370 A GB 4000370A GB 4000370 A GB4000370 A GB 4000370A GB 1328374 A GB1328374 A GB 1328374A
Authority
GB
United Kingdom
Prior art keywords
formula
organic halogen
medium
electro
alkyl
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
GB4000370A
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Itek Corp
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 Itek Corp filed Critical Itek Corp
Publication of GB1328374A publication Critical patent/GB1328374A/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
    • G03G5/026—Layers in which during the irradiation a chemical reaction occurs whereby electrically conductive patterns are formed in the layers, e.g. for chemixerography

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)

Abstract

1328374 Electro-photographic material ITEK CORP 19 Aug 1970 [3 Sept 1969] 40003/70 Heading G2H An electro-photographic medium which may be rendered irreversibly conductive, comprises a support having coated thereon an organic halogen derivative capable of forming a hydrohalide acid on exposure to light and (a) a cyanine dye base of formula (b) a spiropyran of formula (c) an N-vinyl carbazole of formula (d) a dipheny ethylene of formula or (e) a leuco xanthene of formula In the above formulae, d and e are 1 or 2; n is 1 to 4; R is alkyl, aralkyl or aryl; R<SP>1</SP> is H or CN; Q and Z are the atoms necessary to complete a 5 or 6- membered heterocylic nucleus; Y<SP>1</SP> is two radicals at least one being NO 2 and the other NO 2 , OCH 3 , Ce, Br, I or F; R<SP>11</SP> is H or alkyl; a is O to the number of replaceable hydrogen atoms in the aryl nucleus and Y is a substituent radical preferably Br. In the specific embodiments the organic halogen derivative is carbon tetrabromide, hexabromoethane or tribromoacetophenone together with N-vinyl carbazole or a specific cyanine dye base and a resin Many organic halogen derivatives, resins and examples of the compounds of Formulae I to V are given. In use the medium is exposed to an image, charged and then developed. Multiple copies may be taken from the exposed medium by repeating the charging and developing steps.
GB4000370A 1969-09-03 1970-08-19 Electrophotographic copying process Expired GB1328374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US855026A US3879197A (en) 1969-09-03 1969-09-03 Electrophotographic copying process

Publications (1)

Publication Number Publication Date
GB1328374A true GB1328374A (en) 1973-08-30

Family

ID=25320151

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1728273A Expired GB1330450A (en) 1969-09-03 1970-04-10 Electrophotographic copying process
GB4000370A Expired GB1328374A (en) 1969-09-03 1970-08-19 Electrophotographic copying process

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1728273A Expired GB1330450A (en) 1969-09-03 1970-04-10 Electrophotographic copying process

Country Status (5)

Country Link
US (1) US3879197A (en)
JP (1) JPS497013B1 (en)
DE (1) DE2043769A1 (en)
FR (1) FR2060893A5 (en)
GB (2) GB1330450A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913354B1 (en) * 1970-12-19 1974-03-30
GB1488867A (en) * 1974-02-22 1977-10-12 Agfa Gevaert Production of a permanent conductivity pattern
JPS50115830A (en) * 1974-02-22 1975-09-10
US4126456A (en) * 1975-05-29 1978-11-21 International Business Machines Corporation Visual image recording device
DE2635731C2 (en) * 1976-08-09 1982-06-24 Siemens AG, 1000 Berlin und 8000 München Device for an electrophotographic process
JPS5341230A (en) * 1976-09-28 1978-04-14 Fuji Xerox Co Ltd Photosensitive material for electrophotography
JPS6011348B2 (en) * 1976-09-30 1985-03-25 富士ゼロツクス株式会社 electrophotographic photoreceptor
US4089684A (en) * 1977-01-31 1978-05-16 Xerox Corporation Imaging method utilizing the chemical reactivity of donor-acceptor mixtures
JPS6025781B2 (en) * 1977-03-11 1985-06-20 富士ゼロックス株式会社 Photosensitive materials for electrophotography
JPS53148437A (en) * 1977-05-31 1978-12-25 Ricoh Co Ltd Copying method for a large number of copied sheets
US4997593A (en) * 1987-03-18 1991-03-05 Dai Nippon Insatsu Kabushiki Kaisha Variable electroconductivity material
US5064740A (en) * 1989-05-12 1991-11-12 E. I. Du Pont De Nemours And Company Photohardenable electrostatic element with improved environmental latitude
US5221590A (en) * 1991-04-15 1993-06-22 Eastman Kodak Company Photoelectrographic imaging with dyes or pigments to effect a color density or hue shift
US5240800A (en) * 1991-07-29 1993-08-31 Eastman Kodak Company Near-infrared radiation sensitive photoelectrographic master and imaging method
US5288582A (en) * 1991-07-29 1994-02-22 Eastman Kodak Company Photoelectrographic method for printing
EP0557501A1 (en) * 1991-09-16 1993-09-01 Eastman Kodak Company Optical recording with near-infrared dyes to effect bleaching
US5204198A (en) * 1991-10-28 1993-04-20 Eastman Kodak Company Photoelectrographic elements utilizing nonionic sulfonic acid photogenerators
US6243551B1 (en) * 1999-01-07 2001-06-05 Elfotek Ltd. Electrophotographic copying method and apparatus
KR20190019138A (en) * 2016-06-16 2019-02-26 메르크 파텐트 게엠베하 Formulation of organic functional material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO95057A (en) * 1957-09-07
US3081165A (en) * 1957-09-09 1963-03-12 Xerox Corp Xerographic chemography
BE592557A (en) * 1959-07-01
NL256340A (en) * 1959-09-28
NL259795A (en) * 1960-01-08
US3287122A (en) * 1961-07-24 1966-11-22 Azoplate Corp Process for the sensitization of photoconductors
US3441410A (en) * 1965-07-01 1969-04-29 Xerox Corp Deformation imaging processes using electrically photosensitive photochromic materials
US3429701A (en) * 1965-10-24 1969-02-25 Ibm Multiple copy electrophotographic device utilizing a charge pattern at the interface of a photoconductive layer and a dielectric layer
US3620748A (en) * 1966-01-07 1971-11-16 Horizons Research Inc N-vinyl amine/halogen liberating composition sensitized with 9-vinyl carbazoles or polyacenes, or transannular peroxides of polyacenes
US3600169A (en) * 1966-11-25 1971-08-17 Bard Lab Inc Photochemical electrostatic copying sheet and process using free radicals

Also Published As

Publication number Publication date
FR2060893A5 (en) 1971-06-18
JPS497013B1 (en) 1974-02-18
US3879197A (en) 1975-04-22
GB1330450A (en) 1973-09-19
DE2043769A1 (en) 1971-03-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees