GB951642A - Electrostatic image developing materials and methods of using them - Google Patents

Electrostatic image developing materials and methods of using them

Info

Publication number
GB951642A
GB951642A GB10529/60A GB1052960A GB951642A GB 951642 A GB951642 A GB 951642A GB 10529/60 A GB10529/60 A GB 10529/60A GB 1052960 A GB1052960 A GB 1052960A GB 951642 A GB951642 A GB 951642A
Authority
GB
United Kingdom
Prior art keywords
particles
developer
zinc oxide
resins
photoconductive zinc
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
GB10529/60A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB951642A publication Critical patent/GB951642A/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
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components
    • G03G9/131—Developers with toner particles in liquid developer mixtures characterised by polymer components obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • G03G9/125—Developers with toner particles in liquid developer mixtures characterised by the liquid
    • 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
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components
    • G03G9/132—Developers with toner particles in liquid developer mixtures characterised by polymer components obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

951,642. Developing electrostatic images. RADIO CORPORATION OF AMERICA. March 24, 1960 [April 13, 1959], No.10529/60. Heading G2H. A developer for electrostatic images comprises a dispersion of finely-divided electroscopic particles in a liquid dimethyl polysiloxane having a viscosity of between 0.6 and 3 centistokes, with which compatible insulating liquids may be mixed to an extent which does not appreciably affect the properties of the siloxane,the concentration of particles in the liquid being not greater than onefifth by weight of the developer. Examples of compatible insulating liquids are high flash naphthas, kerosene, and trichlorotrifluoroethane. The electroscopic particles which preferably are of diameter not greater than 74Á may be of one or more natural or synthetic waxes or resins of melting point below 200‹C. and may contain one or more colouring materials. Specified materials for the particles include thermoplastic resins comprising polymers of styrene, substituted styrene and its homologues, a synthetic octadecene amide wax, carnauba wax, microcrystalline petroleum wax, a solid thermoplastic silicone resin, and a polyvinyl chloride containing a small proportion of polyvinyl acetate while the colouring materials may be carbon black, various dyes insoluble in the dimethyl polysiloxane, and insulating or photoconductive zinc oxide. Dispersing agents such as calcium stearate and a hydrogenated tallow derivative of imidazoline may be included to assist in coating the pigment particles or ball-milling them with the waxes or resins so that they form the core of the developer particles. By using toner particles comprising photoconductive zinc oxide different colour images may be successively produced in superposition on a single electrophotographic surface. If non-photoconductive zinc oxide is used overprinting cannot be effected.
GB10529/60A 1959-04-13 1960-03-24 Electrostatic image developing materials and methods of using them Expired GB951642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US805740A US3053688A (en) 1959-04-13 1959-04-13 Electrostatic printing

Publications (1)

Publication Number Publication Date
GB951642A true GB951642A (en) 1964-03-11

Family

ID=25192386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10529/60A Expired GB951642A (en) 1959-04-13 1960-03-24 Electrostatic image developing materials and methods of using them

Country Status (5)

Country Link
US (1) US3053688A (en)
CH (1) CH399173A (en)
DE (1) DE1185922B (en)
GB (1) GB951642A (en)
NL (1) NL250444A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078231A (en) * 1959-05-13 1963-02-19 Commw Of Australia Controlled developer for use in electro-photography and electro-radiography
US3150976A (en) * 1960-02-04 1964-09-29 Rca Corp Electrostatic printing
NL266976A (en) * 1960-07-12
US3343956A (en) * 1961-09-29 1967-09-26 Rca Corp Electrostatic printing process wherein development is achieved by sequenctial application of carrier liquid and developer particles
US3257304A (en) * 1961-11-27 1966-06-21 Minnesota Mining & Mfg Process of electrodepositing insulative material on photoconductive copysheet
US3417019A (en) * 1962-12-27 1968-12-17 Eastman Kodak Co Xerographic development
US3360111A (en) * 1963-02-20 1967-12-26 Rca Corp Toner feed cartridge
US3272644A (en) * 1963-07-31 1966-09-13 Dennison Mfg Co Development of latent electrostatic images with crystalline toners
GB1095504A (en) * 1964-03-06 1967-12-20
US3507794A (en) * 1964-12-22 1970-04-21 Harris Intertype Corp Electrostatic photography systems
FR1562934A (en) * 1967-01-20 1969-04-11 Fuji Shashin Film Kabushiki Kaisha Liquid developer and manufacturing process
US3486922A (en) * 1967-05-29 1969-12-30 Agfa Gevaert Nv Development of electrostatic patterns with aqueous conductive developing liquid
US3504625A (en) * 1968-05-03 1970-04-07 Monsanto Graphic Syst Electrostatic printing
US3870644A (en) * 1969-02-10 1975-03-11 Ricoh Kk Liquid developer for plural-color electrophotography
US3841893A (en) * 1970-03-12 1974-10-15 Rank Xerox Ltd Charge control agents for liquid developers
JPS593450A (en) * 1982-06-30 1984-01-10 Fuji Photo Film Co Ltd Engraving method of electrophotoengraving material
US4954408A (en) * 1989-03-20 1990-09-04 Xerox Corporation Polysiloxane crosslinked styrene/butadiene copolymers
US5254427A (en) * 1991-12-30 1993-10-19 Xerox Corporation Additives for liquid electrostatic developers
US5206107A (en) * 1991-12-30 1993-04-27 Xerox Corporation Siloxane surfactants as liquid developer additives
US5437955A (en) * 1992-07-17 1995-08-01 Michlin; Steven B. Dry type toner improvement with lubricant
DE69430300T2 (en) * 1993-01-22 2002-11-07 Research Laboratories Of Australia Pty. Ltd., Eastwood LIQUID DEVELOPER FOR ELECTROSTATOGRAPHY
US5643707A (en) * 1995-07-31 1997-07-01 Xerox Corporation Liquid developer compositions
KR100497360B1 (en) * 2002-07-27 2005-06-23 삼성전자주식회사 Single layered electrophotographic photoreceptor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2297691A (en) * 1939-04-04 1942-10-06 Chester F Carlson Electrophotography
US2784109A (en) * 1950-09-18 1957-03-05 Haloid Co Method for developing electrostatic images
US2735784A (en) * 1953-07-30 1956-02-21 Process of electrostatic printing
FR1112180A (en) * 1953-09-15 1956-03-09 Horizons Electrostatic printing method and device
GB755486A (en) * 1953-09-15 1956-08-22 Horizons Inc Improvements in electrostatic printing
DE1066088B (en) * 1955-02-08 1959-09-24 General Dynamics Corporation, San Diego, Calif. (V. St. A.) Method and apparatus for selectively producing negative and positive visible images from the same electrostatic latent image
US2892709A (en) * 1955-03-07 1959-06-30 Gen Dynamics Corp Electrostatic printing
NL95463C (en) * 1955-12-29
US2877133A (en) * 1956-10-22 1959-03-10 Gen Dynamics Corp Electrostatic photography
US2899335A (en) * 1956-10-31 1959-08-11 Process for developing electrostatic

Also Published As

Publication number Publication date
US3053688A (en) 1962-09-11
DE1185922B (en) 1965-01-21
CH399173A (en) 1966-03-31
NL250444A (en)

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