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GB1292372A - Electrophotographic material - Google Patents

Electrophotographic material

Info

Publication number
GB1292372A
GB1292372A GB925770D GB925770D GB1292372A GB 1292372 A GB1292372 A GB 1292372A GB 925770 D GB925770 D GB 925770D GB 925770 D GB925770 D GB 925770D GB 1292372 A GB1292372 A GB 1292372A
Authority
GB
United Kingdom
Prior art keywords
dye
composition
treating
fumes
protonated
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
GB925770D
Inventor
Paul Brewster Gilman
Donald Warren Heseltine
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 GB1292372A publication Critical patent/GB1292372A/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
    • G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
    • G03G5/0664—Dyes
    • G03G5/0666—Dyes containing a methine or polymethine group
    • G03G5/0668—Dyes containing a methine or polymethine group containing only one methine or polymethine group
    • G03G5/067—Dyes containing a methine or polymethine group containing only one methine or polymethine group containing hetero rings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1292372 Photoconductive composition EASTMAN KODAK CO 26 Feb 1970 [4 March 1969] 9257/70 Heading H1K An organic photoconductive composition comprises a binder and at least one methine dye in which a major proportion of the dye is in the J-aggregate state. The methine dye is preferably a cyanine, merocyanine or styryl dye and numerous examples are given. The composition is coated on a conductive support to yield an electrophotographic plate. Many suitable binders for the composition are specified. The dye may be formed into the J-aggregate state by treating the dye with hydrogen chloride fumes to give a colourless protonated dye, mixing the protonated dye into the composition and treating with ammonia fumes. If the composition is basic then this will neutralize the protonated dye. J-aggregates can also be formed by forming a layer of the composition and treating the layer with the fumes of methylene chloride, ethylene chloride, benzene or toluene. A further method of forming the aggregates is to mix an anionic dye with a cationic polymer or vice versa, or to form adjacent layers of charged dye and charged polymer. The presence of water assists J-aggregate formation for example by coating the composition on a cold substrate with simultaneous moisture condensation on the substrate. Ultrasonic mixing of an alcoholic solution of a dye into the composition will give a J-aggregate state. More than one aggregating dye may be used.
GB925770D 1969-03-04 1970-02-26 Electrophotographic material Expired GB1292372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80426769A 1969-03-04 1969-03-04

Publications (1)

Publication Number Publication Date
GB1292372A true GB1292372A (en) 1972-10-11

Family

ID=25188570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB925770D Expired GB1292372A (en) 1969-03-04 1970-02-26 Electrophotographic material

Country Status (4)

Country Link
BE (1) BE746837A (en)
DE (1) DE2009908C3 (en)
FR (1) FR2037593A5 (en)
GB (1) GB1292372A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746245A (en) * 1980-09-05 1982-03-16 Fuji Photo Film Co Ltd Photoconductive composition and electrophotographic sensitive layer using it
US5008168A (en) * 1988-04-18 1991-04-16 Canon Kabushiki Kaisha Photosensitive member for electrophotography

Also Published As

Publication number Publication date
DE2009908A1 (en) 1970-09-24
DE2009908B2 (en) 1974-03-28
FR2037593A5 (en) 1970-12-31
DE2009908C3 (en) 1974-10-31
BE746837A (en) 1970-08-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee