GB1021885A - Photo-conductive sheets and methods of making them - Google Patents

Photo-conductive sheets and methods of making them

Info

Publication number
GB1021885A
GB1021885A GB35889/62A GB3588962A GB1021885A GB 1021885 A GB1021885 A GB 1021885A GB 35889/62 A GB35889/62 A GB 35889/62A GB 3588962 A GB3588962 A GB 3588962A GB 1021885 A GB1021885 A GB 1021885A
Authority
GB
United Kingdom
Prior art keywords
silica
layer
materials
developer
aqueous solution
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
GB35889/62A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1021885A publication Critical patent/GB1021885A/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
    • G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/02—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process with electrolytic development
    • 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
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • 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
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • G03G5/147—Cover layers
    • G03G5/14704—Cover layers comprising inorganic material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/06—Developers the developer being electrolytic

Abstract

1,021,885. Electro-photographic processes. MINNESOTA & MINING MANUFACTURING CO. Sept. 20, 1962 [Sept. 22, 1961], No. 35889/62. Heading G2H. [Also in Division H1] An electro-photographic material suitable for electrolytic development has over the photo-conductive layer, though not necessarily in direct contact therewith, a continuous, glossy, transparent, cohesive, and water-permeable layer containing a film-forming silica, this layer being substantially free of alkali-metal ions. The silica-containing layer is intended to improve the contrast of the developed image and is stated to be more suitable for this purpose than layers of polyvinyl alcohol, polyvinyl pyrolidone, dimethyl hydantoin formaldehyde, or gelatin. A layer containing a developer material may be provided between the photoconductive layer and the silica-containing layer or developer materials, such as electrolytically-reducible dyes or salts of zinc and silver, may be included in the silica containing layer. A wide variety of other materials may be added to the silica containing layer including inorganic materials, filter dyes, and other organic materials. In the embodiments given, however, silica-containing films are coated directly on to photoconductive layers. Three developers are given for such materials. One consists of an aqueous solution of specified quantities of silver nitrate, ethylene thiourea, magnesium acetate, and acetic acid. Cathodic development is used, the current being passed intermittently to avoid polarisation troubles. A second developer consists of an aqueous solution of silver nitrate and magnesium nitrate. Again intermittent development is used. The third developer is an aqueous solution of nickel chloride, ammonium chloride, and ammonia (pH 6. 5). It is suggested that with silver developers the surface may be treated with known photographic sensitizers such as quatenary ammonium halides, saccharine, and ethylene thiourea.
GB35889/62A 1961-09-22 1962-09-20 Photo-conductive sheets and methods of making them Expired GB1021885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140032A US3165458A (en) 1961-09-22 1961-09-22 Electrolytic recording sheets

Publications (1)

Publication Number Publication Date
GB1021885A true GB1021885A (en) 1966-03-09

Family

ID=22489422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35889/62A Expired GB1021885A (en) 1961-09-22 1962-09-20 Photo-conductive sheets and methods of making them

Country Status (9)

Country Link
US (1) US3165458A (en)
BE (1) BE622712A (en)
CH (1) CH418133A (en)
DE (1) DE1497009B2 (en)
DK (1) DK104551C (en)
ES (1) ES280188A1 (en)
FR (1) FR1499851A (en)
GB (1) GB1021885A (en)
NL (1) NL283382A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432406A (en) * 1960-07-28 1969-03-11 Eastman Kodak Co Photoconductographic material and process of preparation
US3409516A (en) * 1963-06-11 1968-11-05 Milton Alden Electrolytic recording paper containing a sequestering agent
US3914125A (en) * 1964-09-21 1975-10-21 Minnesota Mining & Mfg Diffusion transfer element and method of using same
GB1159394A (en) * 1965-07-21 1969-07-23 Fuji Photo Film Co Ltd Improvements in or relating to Electrolytic Recording
US3413201A (en) * 1965-09-10 1968-11-26 Minnesota Mining & Mfg Electrolytic recording sheets
GB1232406A (en) * 1967-09-01 1971-05-19
CA930591A (en) * 1970-04-30 1973-07-24 International Business Machines Corporation Electrophotographic plate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244325A (en) * 1940-04-15 1941-06-03 Paul G Bird Colloidal solutions of inorganic oxides
US2886434A (en) * 1955-06-06 1959-05-12 Horizons Inc Protected photoconductive element and method of making same
US2901349A (en) * 1957-05-23 1959-08-25 Haloid Xerox Inc Xerographic plate

Also Published As

Publication number Publication date
DE1497009A1 (en) 1969-04-10
US3165458A (en) 1965-01-12
DK104551C (en) 1966-05-31
BE622712A (en)
DE1497009B2 (en) 1970-01-08
ES280188A1 (en) 1963-03-16
CH418133A (en) 1966-07-31
FR1499851A (en) 1967-11-03
NL283382A (en)

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