GB967978A - Improved photoconductive electrophotographic materials - Google Patents

Improved photoconductive electrophotographic materials

Info

Publication number
GB967978A
GB967978A GB31339/62A GB3133962A GB967978A GB 967978 A GB967978 A GB 967978A GB 31339/62 A GB31339/62 A GB 31339/62A GB 3133962 A GB3133962 A GB 3133962A GB 967978 A GB967978 A GB 967978A
Authority
GB
United Kingdom
Prior art keywords
oxide
silicon compound
organo
addition
examples
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
GB31339/62A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB967978A publication Critical patent/GB967978A/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
    • G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

To improve its photo-electric properties zinc oxide is treated with an organo-silicon compound chosen from those conforming to either of two specified general formulae respectively covering unsubstituted or hydrocarbon substituted straight chain or cyclic siloxanes containing up to six silicon atoms, and silane substituted by at least one alkoxyl radical and optionally by various hydrocarbon radicals. Preferred compounds have boiling points of not greater than 200 DEG C. The quantity used preferably lies between 1 and 40% by weight based on the weight of oxide. It is not known whether or not a chemical reaction occurs between the oxide and the silicon compound. Best results are obtained if the oxide is heated to a temperature above the boiling-point of the organo silicon compound and then stirred in contact with the vapour of the latter. In the examples the addition of the silicon compound in its vaporized form takes some hours and stirring is continued for a similar length of time after the addition has been completed. In the examples, the organo-silicon compounds used are hexamethyldisiloxane, octamethylcyclotetrasiloxane, tri-isopropoxysilane, methyltri-ethoxysilane, methyldi-isopropoxy silane, and dimethyl diethoxysilane. Other preferred compounds are listed. The Specification states that the heated oxide may be used in toners for developing electrostatic charge images, in unspecified semi-conductor layers, and in electrophotographic plates. All the examples relate to electrophotographic plates and in these the treated oxide is dispersed in an insulating resinous binder, if desired with the addition of optical sensitizers such as dyestuffs, and is coated on to a relatively conductive support. Specifications 834,502, 874,133 and 896,610 are referred to.
GB31339/62A 1961-08-17 1962-08-15 Improved photoconductive electrophotographic materials Expired GB967978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA38144A DE1157916B (en) 1961-08-17 1961-08-17 Process for increasing the sensitivity to light and reducing the dark conductivity of zinc oxide

Publications (1)

Publication Number Publication Date
GB967978A true GB967978A (en) 1964-08-26

Family

ID=6930628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31339/62A Expired GB967978A (en) 1961-08-17 1962-08-15 Improved photoconductive electrophotographic materials

Country Status (5)

Country Link
US (1) US3155504A (en)
BE (1) BE621481A (en)
CH (1) CH436989A (en)
DE (1) DE1157916B (en)
GB (1) GB967978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439809A1 (en) * 1978-10-25 1980-05-23 Toray Silicone Co IMPROVING AGENT BASED ON ZINC OXIDE AND A SILICON COMPOUND ON ELECTRICAL INSULATORS, PROCESS FOR PRODUCING THE SAME, AND ELECTRICALLY INSULATING COMPOSITION CONTAINING THE SAME

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348944A (en) * 1963-07-17 1967-10-24 Fairchild Camera Instr Co Photoengraving resist
CH438944A (en) * 1964-05-25 1967-06-30 Lumiere Soc Method of making an electrophotographic material
US3346381A (en) * 1964-07-30 1967-10-10 Rca Corp Electrostatic recording element
US3453106A (en) * 1965-06-21 1969-07-01 Owens Illinois Inc Compositions exhibiting persistent internal polarization where a photoconductive material is dispersed in a polysiloxane resin derived from trifunctional monomers
US3475351A (en) * 1966-01-14 1969-10-28 St Joseph Lead Co Electrically conductive zinc oxide
US3509073A (en) * 1966-07-27 1970-04-28 St Joseph Lead Co Electrically conductive zinc oxide
GB1354237A (en) * 1971-04-20 1974-06-05 Fuji Photo Film Co Ltd Process for preparing photoconductive materials
US4639402A (en) * 1985-08-02 1987-01-27 Xerox Corporation Photoreceptor containing selenium particles coated with a reaction product of a hydrolyzed silane

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494920A (en) * 1945-07-25 1950-01-17 Corning Glass Works Method of coating with organopolysiloxanes
US2610167A (en) * 1946-12-07 1952-09-09 Grotenhuis Theodore A Te Pigmented silicone elastomers
US2615006A (en) * 1948-04-05 1952-10-21 Du Pont Pigmentary materials
US2579332A (en) * 1950-02-11 1951-12-18 Gen Electric Method for increasing the viscosity of liquid resinous organopolysiloxanes
US3052539A (en) * 1953-10-01 1962-09-04 Rca Corp Electrostatic printing
US3052540A (en) * 1954-06-02 1962-09-04 Rca Corp Dye sensitization of electrophotographic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439809A1 (en) * 1978-10-25 1980-05-23 Toray Silicone Co IMPROVING AGENT BASED ON ZINC OXIDE AND A SILICON COMPOUND ON ELECTRICAL INSULATORS, PROCESS FOR PRODUCING THE SAME, AND ELECTRICALLY INSULATING COMPOSITION CONTAINING THE SAME

Also Published As

Publication number Publication date
US3155504A (en) 1964-11-03
CH436989A (en) 1967-05-31
BE621481A (en)
DE1157916B (en) 1963-11-21

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