GB1008789A - Graphic reproduction processes and materials therefor - Google Patents

Graphic reproduction processes and materials therefor

Info

Publication number
GB1008789A
GB1008789A GB13662/62A GB1366262A GB1008789A GB 1008789 A GB1008789 A GB 1008789A GB 13662/62 A GB13662/62 A GB 13662/62A GB 1366262 A GB1366262 A GB 1366262A GB 1008789 A GB1008789 A GB 1008789A
Authority
GB
United Kingdom
Prior art keywords
image
plate
areas
red
coloured
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
GB13662/62A
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
Priority claimed from US101529A external-priority patent/US3212887A/en
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1008789A publication Critical patent/GB1008789A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
    • 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
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/09—Sensitisors or activators, e.g. dyestuffs
    • 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
    • G03G5/12—Recording members for multicolour processes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G8/00—Layers covering the final reproduction, e.g. for protecting, for writing thereon

Abstract

1,008,789. Electro photographic processes. MINNESOTA MINING and MANUFACTURING CO. April 9, 1962 [April 7, 1961], No. 13662/62. Heading G2H [Also in Division H1] Colour xerographic plates consisting of a conductive substrate carrying a regular or random pattern of minute photoconductive areas coloured cyan, yellow and magenta and selectivity sensitive to red,green and blue light respectively (see Division H1) are exposed and developed in the following manner. The coloured image to be reproduced is formed on the plate or projected on it through red, blue and green filters in turn. To develop the resulting conductivity image the plate may be placed in an electrolyte containing a suspension or emulsion of positively or negatively charged resin particles which, if not inherently white, contain white inorganic pigments such as titanium dioxide and zinc sulphide. Suitable resins are polymers of fatty acids and polyamines, copolymers of vinyl chloride and vinyl acetate, polyvinylacetate, silicones, and epoxy resins all of which are positively charged in emulsion or suspension and nylon, polyethylene, chlorinated rubber, polybutadiene, styrene-butadiene copolymers, and acrylic polymers and copolymers which are negatively charged. With the conductive support as anode or cathode as the case may be electrolysis results in deposition of the resin on the areas rendered conductive by exposure to the light to which they are sensitive. An alternative procedure is to develop the image cathodically in an aqueous solution of silver sulphate or copper sulphate to deposit metal before developing as described above. If suitable e.g. certain triphenylmethane and azo dyes are used as colourants these may be bleached out by electrolytic treatment in aqueous ethyl alcohol containing zinc chloride. A further alternative is to place the plate in a corona discharge into which white particles are sprayed. After development in any of these ways in the red areas of the image for instance, the cyan coloured photoconductive areas are covered or bleached out leaving only magenta and yellow coloured areas giving the effect of dull red, and so on. The image may be brightened by heating, or moistening the plate with a solvent for the dyes to locally intermingle the remaining colours. To produce a charge image which may be electrostatically developed the plate is either uniformly charged before exposure, or is subsequently charged through the conductivity pattern. The resulting image is developed by positively or negatively charged white resin particles. For example a developer consisting of a powder of polyvinyl chloride pigmented with titanium dioxide and mixed with powdered alumina to increase its fluidity is flowed over the plate in a tray, the image fixed by heating and a protective layer of wax or lacquer applied if desired. If the lacquer contains a suitable solvent this also causes local mixing of the colours, thus rendering a separate treatment for this purpose unnecessary.
GB13662/62A 1961-04-07 1962-04-09 Graphic reproduction processes and materials therefor Expired GB1008789A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US101529A US3212887A (en) 1961-04-07 1961-04-07 Laterally disposed coterminously adjacent multicolor area containing graphic reproduction receptor and electrophotographic process of using same
US314941A US3329590A (en) 1961-04-07 1963-10-09 Electrolytic development of a subtractive color-forming photoconductive member

Publications (1)

Publication Number Publication Date
GB1008789A true GB1008789A (en) 1965-11-03

Family

ID=26798353

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13662/62A Expired GB1008789A (en) 1961-04-07 1962-04-09 Graphic reproduction processes and materials therefor
GB41426/64A Expired GB1091416A (en) 1961-04-07 1964-10-09 Improvements in colour reproduction

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB41426/64A Expired GB1091416A (en) 1961-04-07 1964-10-09 Improvements in colour reproduction

Country Status (7)

Country Link
US (1) US3329590A (en)
BE (1) BE613738A (en)
CH (1) CH434978A (en)
DE (1) DE1299226B (en)
GB (2) GB1008789A (en)
NL (1) NL273964A (en)
SE (1) SE340403B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420662A (en) * 1965-04-07 1969-01-07 Minnesota Mining & Mfg Process for preparing a masked color separation positive utilizing an electrophotographic photoconductive copysheet
US3475169A (en) * 1965-08-20 1969-10-28 Zenith Radio Corp Process of electrostatically screening color cathode-ray tubes
US3489557A (en) * 1966-03-16 1970-01-13 Zenith Radio Corp Process of electrostatically screening a color cathode-ray tube
US3515548A (en) * 1966-03-16 1970-06-02 Zenith Radio Corp Charging process for electrostatic screening of color tubes
US3489556A (en) * 1966-03-16 1970-01-13 Zenith Radio Corp Process fo electrostatically screening color cathode-ray tubes
US3565005A (en) * 1968-04-23 1971-02-23 Philip H Knott Device for permanently recording, by the application of pressure, multicolored informative markings
US3630729A (en) * 1969-06-25 1971-12-28 Dick Co Ab Electrophotographic multicolor copy process employing solubilizable dyes
US3873309A (en) * 1970-06-18 1975-03-25 Xerox Corp Imaging method using migration material
US3880656A (en) * 1971-10-02 1975-04-29 Canon Kk Electrophotographic method for colored images
GB1414995A (en) * 1971-11-15 1975-11-26 Canon Kk Electrophotographic method
JPS4936339A (en) * 1972-08-07 1974-04-04
US3849132A (en) * 1973-01-04 1974-11-19 Xerox Corp Photoelectrophoretic imaging method employing a chromogenic reaction
NL7405944A (en) * 1974-05-03 1975-11-05 Oce Van Der Grinten Nv PROCESS FOR PREPARING A PANCHROMATICALLY SENSITIVE ZINC OXIDE.
US4149887A (en) * 1974-08-23 1979-04-17 Sidney Levy Photography utilizing micro-capsular materials
US4121932A (en) * 1974-09-28 1978-10-24 Matsushita Electric Industrial Co., Ltd. Electrophotographic process involving dye transfer imagewise
JPS524838A (en) * 1975-06-30 1977-01-14 Matsushita Electric Ind Co Ltd Photosensitive-plate of electronic photograph
CA1129426A (en) * 1977-11-28 1982-08-10 Suzanne P. Clark Photoconductive compositions
US6546128B1 (en) 1995-05-16 2003-04-08 Riso Kagaku Corporation Color image forming method, color image forming apparatus, covering sheet and color image
JPH09150569A (en) * 1995-11-29 1997-06-10 Riso Kagaku Corp Color image forming sheet
DE102012211767B4 (en) * 2012-07-05 2014-03-13 Bundesdruckerei Gmbh Security document blank for a colored laser personalization, method for producing a security document by means of color laser personalization of a security document blank and security document.
GB2526531B (en) * 2014-04-30 2017-08-30 De La Rue Int Ltd Security device components and methods of manufacture thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE565270A (en) * 1957-03-01
US3245785A (en) * 1959-04-27 1966-04-12 Minnesota Mining & Mfg Graphic reproduction
BE598821A (en) * 1960-01-05
US3253913A (en) * 1960-10-13 1966-05-31 Eastman Kodak Co Process for color electrophotography
US3212887A (en) * 1961-04-07 1965-10-19 Minnesota Mining & Mfg Laterally disposed coterminously adjacent multicolor area containing graphic reproduction receptor and electrophotographic process of using same
BE624845A (en) * 1961-07-10

Also Published As

Publication number Publication date
GB1091416A (en) 1967-11-15
DE1299226B (en) 1969-07-10
US3329590A (en) 1967-07-04
CH434978A (en) 1967-04-30
SE340403B (en) 1971-11-15
NL273964A (en)
BE613738A (en)

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