GB818068A - Methods for producing a base for electrostatic printing - Google Patents

Methods for producing a base for electrostatic printing

Info

Publication number
GB818068A
GB818068A GB34637/55A GB3463755A GB818068A GB 818068 A GB818068 A GB 818068A GB 34637/55 A GB34637/55 A GB 34637/55A GB 3463755 A GB3463755 A GB 3463755A GB 818068 A GB818068 A GB 818068A
Authority
GB
United Kingdom
Prior art keywords
dispersion
powder
grams
vehicle
photo
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
GB34637/55A
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 GB818068A publication Critical patent/GB818068A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02Charge-receiving layers
    • G03G5/04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/05Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0525Coating methods
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

818,068. Semi-conductor devices. RADIO CORPORATION OF AMERICA. Dec. 2, 1955 [Dec. 15, 1954], No. 34637/55. Class 37. [Also in Group XX] A base for electrostatic printing is formed by applying a dispersion in water of a finelydivided photo-conductor and an electricallyinsulating film-forming vehicle, to a backing plate to form a coating and then drying the coating. The dispersion may be made by mixing a dispersion of the photo-conductor with a dispersion of the vehicle or by mixing the photo-conductor and vehicle and dispersing the mixture. The backing plate may be of mica, paper, cellulose acetate, copper, brass, aluminium or glass. The photo-conductor may be an oxide, sulphide, selenide, telluride, or iodide of Cd, Hg, Sb, Bi, Mo, T1, A1, Pb, or Zn, arsenic trisulphide, cadmium arsenide, lead chromate, or selenium or mixtures thereof chosen to provide a suitable spectral response. The filmforming vehicle may be a polyvinyl acetate resin, a natural or synthetic resin, wax, or silicone resin of high dielectric constant and dielectric, strength, a cellulose ester, polystyrene or shellac, or a resin monomer which is polymerized after dispersion. In one example a dispersion of 100 grams of photo-conductive ZnO and 2 grams of a dispersing agent, e.g. a mix of sodium salts of polymerized alkyl naphthalene sulphonic acids in 100 grams of water is mixed with a dispersion of 77 grams of polyvinyl acetate resin in 63 grams of water which has been agitated for half an hour with 8 grams of the plasticizer tricresyl phosphate and the mixture applied to a base plate which is then heated at 105‹ C. for 5 minutes to dry it. An electrostatic print is formed on such a base by first placing it on an earthed base in a dark enclosure and electrostatically charging its surface uniformly, and then projecting an image of the subject to be printed formed by infra-red ultra-violet or visible light or by electrons on to the surface. A developer such as a charged ink mist or a charged powder is then applied to the surface and adheres to the parts of it which have retained some charge. The image may be fixed where a powder developer is used by applying a coating of a solvent for the powder or the vehicle to the surface to cause the powder to adhere to the surface and then evaporating the solvent, by pressing the powder image into the surface or, if the powder or vehicle has a low-melting point by heating to fuse the powder to the coating.
GB34637/55A 1954-12-15 1955-12-02 Methods for producing a base for electrostatic printing Expired GB818068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US341181XA 1954-12-15 1954-12-15

Publications (1)

Publication Number Publication Date
GB818068A true GB818068A (en) 1959-08-12

Family

ID=21874416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34637/55A Expired GB818068A (en) 1954-12-15 1955-12-02 Methods for producing a base for electrostatic printing

Country Status (5)

Country Link
BE (1) BE543624A (en)
CH (1) CH341181A (en)
DE (1) DE958355C (en)
FR (1) FR1136146A (en)
GB (1) GB818068A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111471348A (en) * 2020-04-28 2020-07-31 浙江大学 Wax-dispersed liquid metal solid ink and preparation method and application thereof
CN111542173A (en) * 2020-04-28 2020-08-14 浙江大学 Paper-based electronic circuit printing method using wax-based solid conductive ink

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL218586A (en) * 1956-07-03
BE562337A (en) * 1956-11-14
GB893491A (en) * 1957-12-17 1962-04-11 Ozalid Co Ltd Improvements in or relating to photographic reproduction
GB932730A (en) * 1958-12-18
BE623908A (en) * 1961-10-25
GB1066249A (en) * 1962-12-28 1967-04-26 Gen Aniline & Film Corp Xerographic charge transfer process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111471348A (en) * 2020-04-28 2020-07-31 浙江大学 Wax-dispersed liquid metal solid ink and preparation method and application thereof
CN111542173A (en) * 2020-04-28 2020-08-14 浙江大学 Paper-based electronic circuit printing method using wax-based solid conductive ink

Also Published As

Publication number Publication date
DE958355C (en) 1957-02-14
CH341181A (en) 1959-09-30
FR1136146A (en) 1957-05-09
BE543624A (en)

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