GB1071615A - Improvements relating to the development of electrostatic images - Google Patents

Improvements relating to the development of electrostatic images

Info

Publication number
GB1071615A
GB1071615A GB31155/64A GB3115564A GB1071615A GB 1071615 A GB1071615 A GB 1071615A GB 31155/64 A GB31155/64 A GB 31155/64A GB 3115564 A GB3115564 A GB 3115564A GB 1071615 A GB1071615 A GB 1071615A
Authority
GB
United Kingdom
Prior art keywords
dye
toner
crystalline
image
solvent
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
GB31155/64A
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.)
Dennison Manufacturing Co Ltd
Original Assignee
Dennison Manufacturing Co Ltd
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 Dennison Manufacturing Co Ltd filed Critical Dennison Manufacturing Co Ltd
Publication of GB1071615A publication Critical patent/GB1071615A/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures
    • 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
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0503—Inert supplements
    • G03G5/051—Organic non-macromolecular compounds
    • G03G5/0514—Organic non-macromolecular compounds not comprising cyclic groups
    • 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
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0503—Inert supplements
    • G03G5/051—Organic non-macromolecular compounds
    • G03G5/0517—Organic non-macromolecular compounds comprising one or more cyclic groups consisting of carbon-atoms only
    • 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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09733—Organic compounds
    • 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09733—Organic compounds
    • G03G9/09775—Organic compounds containing atoms other than carbon, hydrogen or oxygen

Landscapes

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

Abstract

1,071,615. Electrostatic image developers. DENNISON MANUFACTURING CO. Ltd. Aug. 4, 1964 [July 31, 1963], No. 31155/64. Heading G2H. A method of developing an electrostatic image on a surface consisting of photo-conductive particles suspended in a thermoplastic binder, comprises contacting the image with a toner composition made up of finely divided particles of dye dispersed in a water insoluble crystalline organic material which has a melting range of within 1‹C. and which lies above 140‹F., the material when melted being a solvent for the dye and for said binder, the melted material having a viscosity which declines with temperature and which does not exceed 40 centipoises, the material also having a molecular weight not exceeding 350, and fixing the image by heating. The toner particles may be used dry as a dusting powder, with or without triboelectric charge producing particles such as iron filings or glass beads, or the toner may be suspended in a dielectric liquid which is a non-solvent for the toner. On melting, the crystalline material carries the dye into the support, such as paper, for the binder, and the ratio of dye to said material should be at least 1 to 9. In modifications, the dye may be (i) an inherently coloured crystalline polyvalent metal salt of an organic acid which serves as both dye and crystalline solvent material, (ii) a leuco dye base giving a colour when contacted by an electron-donating co-reactant in the photoconductive coating. Crystal violet lactone is such a leuco dye base. Examples of the crystalline material are mterphenyl, diphenyl pthalate and stearic acid which are used with dyes such as Brilliant oil Blue, oil red dye, or ortho and para-toluene sulphonamides. The image-carrying surface may comprise zinc oxide in a high styrene butadiene. For liquid development the toner is made into a concentrate with a tripolymer dispersant such as octadecenyl methacrylate, diethyl aminoethyl methacrylate, and styrene, aluminium tristearate, and paraffin hydrocarbon spirit. This is diluted with further spirit. Examples of dye (i) above are; iron, zinc, or nickel dibutyl dithiocarbamate to which dyes may or may not be dissolved. Examples of a coreactant for use with dye (ii) above are: pthalic anhydride, chlorosulphonated polyethylene. The photo-sensitive surface may be sensitized by a corona discharge and exposed to light through a transparent negative.
GB31155/64A 1963-07-31 1964-08-04 Improvements relating to the development of electrostatic images Expired GB1071615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US299084A US3272644A (en) 1963-07-31 1963-07-31 Development of latent electrostatic images with crystalline toners

Publications (1)

Publication Number Publication Date
GB1071615A true GB1071615A (en) 1967-06-07

Family

ID=23153239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31155/64A Expired GB1071615A (en) 1963-07-31 1964-08-04 Improvements relating to the development of electrostatic images

Country Status (4)

Country Link
US (1) US3272644A (en)
BE (1) BE651079A (en)
GB (1) GB1071615A (en)
NL (1) NL6408823A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292921A (en) * 1963-05-17 1900-01-01
US3510297A (en) * 1966-05-05 1970-05-05 Ibm Process for producing negative transparencies
US3622368A (en) * 1967-08-22 1971-11-23 Ricoh Kk Method for developing electrostatic latent images by utilizing coupling reaction
US4019903A (en) * 1971-01-06 1977-04-26 Xerox Corporation Electrostatic development
US4115289A (en) * 1973-08-02 1978-09-19 A. B. Dick Company Dry powdered or liquid developer compositions
US4973539A (en) * 1989-02-27 1990-11-27 Xerox Corporation Toner and developer compositions with crosslinked liquid crystalline resins
US5023160A (en) * 1989-11-08 1991-06-11 Xerox Corporation Liquid developer compositions

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1791431A (en) * 1927-10-31 1931-02-03 Gen Aniline Works Inc Process of coloring higher fatty acids
US1953438A (en) * 1930-11-03 1934-04-03 Gen Aniline Works Inc Process for coloring organic products
US2355359A (en) * 1941-12-17 1944-08-08 Kohnstamm & Co Inc H Fluorescein and halogenated fluoresceins dye acids
US2917460A (en) * 1955-06-17 1959-12-15 Ibm Powder compositions useful as electroscopic toners
US2899335A (en) * 1956-10-31 1959-08-11 Process for developing electrostatic
DE1072884B (en) * 1957-06-14 1960-01-07 Dr. Ulrich Schmiedel Hamburg-Othmarschen, und TECHNOPHOT Dr. Rudolf Fischer K.G., Berlin-Neukölln Process for developing, transferring and fixing electrophotographic images
US2953470A (en) * 1957-06-27 1960-09-20 Ncr Co Method for electrostatic printing
US3080251A (en) * 1958-03-13 1963-03-05 Xerox Corp Method of xerographic development
NL250444A (en) * 1959-04-13
BE589923A (en) * 1959-04-24
NL253124A (en) * 1959-06-27

Also Published As

Publication number Publication date
US3272644A (en) 1966-09-13
NL6408823A (en) 1965-02-01
BE651079A (en) 1964-11-16

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