GB1005246A - Improvements in or relating to electrophotographic materials - Google Patents

Improvements in or relating to electrophotographic materials

Info

Publication number
GB1005246A
GB1005246A GB44932/61A GB4493261A GB1005246A GB 1005246 A GB1005246 A GB 1005246A GB 44932/61 A GB44932/61 A GB 44932/61A GB 4493261 A GB4493261 A GB 4493261A GB 1005246 A GB1005246 A GB 1005246A
Authority
GB
United Kingdom
Prior art keywords
metal salt
light
zinc oxide
sensitivity
oxide
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
GB44932/61A
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 GB1005246A publication Critical patent/GB1005246A/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
    • G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
    • G03G5/087—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic and being incorporated in an organic bonding material
    • 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
    • G03G5/09—Sensitisors or activators, e.g. dyestuffs

Abstract

The light sensitivity of zinc oxide powder which is to be incorporated in electro-photographic material is reduced by treating the powder surface with a salt of aluminium, bismuth, chromium, copper, iron, lithium, magnesium, nickel, tin, or titanium so that the metal salt combines with at least 10% of the surface of the oxide particles. Metal salts exemplified are the chlorides of nickel, magnesium, lithium, chromium, aluminium, ferric iron, and cuprous and cupric copper, the iodides of bismuth and stannous and stannic tin, and tetra-iso-propyl titanate. The zinc oxide powder is treated with the metal salt in the manner described in Specification 1,005,245 and is similarly incorporated in electro-photographic material. Reduction of the light efficiency of the zinc oxide by the treatment of the present invention reduces the sensitivity to blue and ultra-violet light but if the modifying metal salt is also by virtue of its acid portion, a Lewis acid, the oxide becomes capable of absorbing any desired dyestuff sensitizer so that, for example, the overall sensitivity of the oxide to white light may be increased. Crystal violet is the dye used in the example given. Specification 1,005,247 also is referred to.
GB44932/61A 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials Expired GB1005246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7575360A 1960-12-14 1960-12-14

Publications (1)

Publication Number Publication Date
GB1005246A true GB1005246A (en) 1965-09-22

Family

ID=22127772

Family Applications (3)

Application Number Title Priority Date Filing Date
GB44933/61A Expired GB1005247A (en) 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials
GB44931/61A Expired GB1005245A (en) 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials
GB44932/61A Expired GB1005246A (en) 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB44933/61A Expired GB1005247A (en) 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials
GB44931/61A Expired GB1005245A (en) 1960-12-14 1961-12-14 Improvements in or relating to electrophotographic materials

Country Status (5)

Country Link
JP (1) JPS3822646B1 (en)
BE (1) BE611387A (en)
DE (1) DE1241709B (en)
FR (1) FR1314045A (en)
GB (3) GB1005247A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948658A (en) * 1973-07-26 1976-04-06 St. Joe Minerals Corporation Bicharge photoconductive zinc oxides containing iodine
US4258080A (en) 1977-11-08 1981-03-24 Matsushita Electric Industrial Co., Ltd. Method of lowering resistivity of metal oxide semiconductor powder
US4381338A (en) * 1979-09-21 1983-04-26 Canon Kabushiki Kaisha Process for preparing photoconductive particles
US4409310A (en) * 1979-09-20 1983-10-11 Canon Kabushiki Kaisha Surface doped inorganic electrophotographic photosensitive particles in binder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1408425A (en) * 1972-05-05 1975-10-01 Zochem Ltd Production of photoconductive zinc oxide
FR2402893A1 (en) * 1977-09-13 1979-04-06 Agfa Gevaert PHOTOCONDUCTOR RECORDING ELEMENTS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948658A (en) * 1973-07-26 1976-04-06 St. Joe Minerals Corporation Bicharge photoconductive zinc oxides containing iodine
US4258080A (en) 1977-11-08 1981-03-24 Matsushita Electric Industrial Co., Ltd. Method of lowering resistivity of metal oxide semiconductor powder
US4409310A (en) * 1979-09-20 1983-10-11 Canon Kabushiki Kaisha Surface doped inorganic electrophotographic photosensitive particles in binder
US4381338A (en) * 1979-09-21 1983-04-26 Canon Kabushiki Kaisha Process for preparing photoconductive particles

Also Published As

Publication number Publication date
GB1005247A (en) 1965-09-22
GB1005245A (en) 1965-09-22
DE1241709B (en) 1967-06-01
JPS3822646B1 (en) 1963-10-25
BE611387A (en)
FR1314045A (en) 1963-01-04

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