GB837545A - Improvements in the preparation of planographic plates - Google Patents

Improvements in the preparation of planographic plates

Info

Publication number
GB837545A
GB837545A GB24904/55A GB2490455A GB837545A GB 837545 A GB837545 A GB 837545A GB 24904/55 A GB24904/55 A GB 24904/55A GB 2490455 A GB2490455 A GB 2490455A GB 837545 A GB837545 A GB 837545A
Authority
GB
United Kingdom
Prior art keywords
acetate
water
hydrophilic
gms
powder image
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
GB24904/55A
Inventor
Meyer Louis Sugarman Jnr
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
Priority to BE541668D priority Critical patent/BE541668A/xx
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Priority to GB24904/55A priority patent/GB837545A/en
Priority to DER17345A priority patent/DE974162C/en
Priority to FR1176922D priority patent/FR1176922A/en
Priority to US604046A priority patent/US2993787A/en
Publication of GB837545A publication Critical patent/GB837545A/en
Priority to CH478761A priority patent/CH374796A/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
    • 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
    • G03G5/0528—Macromolecular bonding materials
    • G03G5/0557—Macromolecular bonding materials obtained otherwise than by reactions only involving carbon-to-carbon unsatured bonds
    • G03G5/0585—Cellulose and derivatives
    • 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
    • G03G5/0528—Macromolecular bonding materials
    • G03G5/0532—Macromolecular bonding materials obtained by reactions only involving carbon-to-carbon unsatured bonds
    • G03G5/0542—Polyvinylalcohol, polyallylalcohol; Derivatives thereof, e.g. polyvinylesters, polyvinylethers, polyvinylamines
    • 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
    • G03G5/0528—Macromolecular bonding materials
    • G03G5/0592—Macromolecular compounds characterised by their structure or by their chemical properties, e.g. block polymers, reticulated polymers, molecular weight, acidity
    • 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
    • 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

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

837,545. Photo-mechanical printing surfaces. RADIO CORPORATION OF AMERICA. Aug. 30, 1955, No. 24904/55. Drawings to Specification. Class 98(2) [Also in Group XVI] In the preparation of planographic printing plates a paper, synthetic resin, metal or other backing (e.g. a high wet-strength paper loaded with carbon black for good electrical conductivity) is coated directly, or over an undercoat, with a photoconductor suspended in a dielectric film-forming vehicle; a fixed powder image is electrostatically produced thereon; and the non-image areas are chemically treated, in a manner not affecting the powder image, to provide a hydrophilic material solely in said areas. The powder image is preferably hydrophobic. The powder image may be produced as described in Specification 775,812, and the hydrophilic areas by (a) chemical conversion or (b) hydrolyzation of the coating, or by (c) removing it (as in Specification 775,812) to expose the hydrophilic backing or a previously applied hydrophilic layer. In method (a) a coating formed from photo-conductive zinc oxide, a specified silicone resin, and toluene, is made hydrophilic by washing with a solution of (i) a water-soluble bivalent metal salt such as an acetate, nitrate, chloride or formate of barium, cadmium, calcium, cobalt, copper, iron, lead, magnesium, nickel, strontium, zinc, or any other bivalent metal of Group I, II, IV, VII and VIII of the Periodic Table,. of which the aqueous salt solution is stable; an example is: zinc acetate 20 gms., water 80 ml., ethyl alcohol 20 ml.; or (ii) a water-soluble multi-valent metal formate or acetate with a water-soluble alkaline metal or ammonium formate or acetate; an example is: zirconyl acetate 15, sodium acetate 5, butanol 2, 40% formaldehyde 1 (gms.), water 77 ml. In method (b) the coating vehicle may be hydrolyzable to make it hydrophilic, e.g. it may be cellulose ester, cellulose acetate, cellulose acetate butyrate, or cellulose acetate propionate, an example of a coating material is: zinc oxide 96 gms., low viscosity cellulose acetate 38 gms., acetone 300 ml., methyl "Cellosolve" (Registered Trade Mark) 300 ml. The hydrolyzing solution may be: sodium hydroxide 50 gms., ethyl alcohol 400 ml., and water to make up to 1 litre.
GB24904/55A 1955-08-30 1955-08-30 Improvements in the preparation of planographic plates Expired GB837545A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE541668D BE541668A (en) 1955-08-30
GB24904/55A GB837545A (en) 1955-08-30 1955-08-30 Improvements in the preparation of planographic plates
DER17345A DE974162C (en) 1955-08-30 1955-08-31 Process for the production of lithographic printing plates by the electrostatic process
FR1176922D FR1176922A (en) 1955-08-30 1955-09-09 Electrostatic printing
US604046A US2993787A (en) 1955-08-30 1956-08-14 Electrostatic printing
CH478761A CH374796A (en) 1955-08-30 1961-04-24 Method for manufacturing a knitting piece, device for implementing this method and knitting piece obtained by means of this method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB24904/55A GB837545A (en) 1955-08-30 1955-08-30 Improvements in the preparation of planographic plates
US604046A US2993787A (en) 1955-08-30 1956-08-14 Electrostatic printing

Publications (1)

Publication Number Publication Date
GB837545A true GB837545A (en) 1960-06-15

Family

ID=26257372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24904/55A Expired GB837545A (en) 1955-08-30 1955-08-30 Improvements in the preparation of planographic plates

Country Status (4)

Country Link
US (1) US2993787A (en)
BE (1) BE541668A (en)
FR (1) FR1176922A (en)
GB (1) GB837545A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2331820A1 (en) * 1975-11-17 1977-06-10 Coulter Information Systems LITHOGRAPHIC PRINTING PLATE AND ITS MANUFACTURING PROCESS

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE562337A (en) * 1956-11-14
DE1129051B (en) * 1957-02-15 1962-05-03 Harris Intertype Corp Process for the production of light-conducting layers
NL299066A (en) * 1958-12-18
US3280741A (en) * 1958-12-31 1966-10-25 Burroughs Corp Electrostatic recording
US3198110A (en) * 1959-06-15 1965-08-03 Minnesota Mining & Mfg Lithographic printing plate with polymer coated metal image
US3160503A (en) * 1959-06-22 1964-12-08 Warren S D Co Electrophotographic recording paper and method of making
US3214272A (en) * 1960-05-10 1965-10-26 Method of recording still optical images by means of a photocondugtive layer using thermoplastic imagewise deformation of the image layer
US3152969A (en) * 1960-07-28 1964-10-13 Eastman Kodak Co Photoconductolithography employing hydrophobic images
NL269992A (en) * 1960-10-07
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
US3257304A (en) * 1961-11-27 1966-06-21 Minnesota Mining & Mfg Process of electrodepositing insulative material on photoconductive copysheet
US3106158A (en) * 1962-01-22 1963-10-08 Rca Corp Method of preparing lithographic printing plates
US3272121A (en) * 1963-02-14 1966-09-13 Plastic Coating Corp Lithographic printing plate prepared by photoelectrostatic reproduction, a method for its production and a method for lithographic printing
CH438944A (en) * 1964-05-25 1967-06-30 Lumiere Soc Method of making an electrophotographic material
US3256811A (en) * 1964-09-09 1966-06-21 Dick Co Ab Method for the preparation of thermographic offset masters
US3323451A (en) * 1965-02-24 1967-06-06 Addressograph Multigraph Process and composition for producing planographic photoelectrostatic printing plates
US3489559A (en) * 1965-05-28 1970-01-13 Mead Corp Components for electrophotographic compositions and processes
US3460476A (en) * 1965-12-27 1969-08-12 Xerox Corp Imaging process
US3364857A (en) * 1966-02-02 1968-01-23 Addressograph Multigraph Duplicating
US3451336A (en) * 1966-01-13 1969-06-24 Addressograph Multigraph Master making and duplicating machine
US3390634A (en) * 1966-06-08 1968-07-02 Addressograph Multigraph Direct lithography master making
US3501295A (en) * 1966-06-17 1970-03-17 Riegel Paper Corp Electrophotographic reproduction system utilizing lightweight copy papers
US3521560A (en) * 1966-10-20 1970-07-21 Addressograph Multigraph Lithographic printing
US3510299A (en) * 1967-06-26 1970-05-05 Clifford E Herrick Jr Method and material for the production of continuous - tone electrophotographic images
US3507693A (en) * 1967-11-13 1970-04-21 Yasuo Ueda Method of producing an electrophotographic plate
US3971870A (en) * 1971-07-27 1976-07-27 Semi-Elements, Inc. Semiconductor device material
US3880514A (en) * 1973-09-14 1975-04-29 Coulter Information Systems Ion producing source for electrostatic recording apparatus
US4123271A (en) * 1974-01-22 1978-10-31 Mita Industrial Company, Limited Alkali metal dichromate as memory resistance improver for zinc oxide photoconductors in electrostatic photography
US4434218A (en) 1979-01-24 1984-02-28 Konishiroku Photo Industry Co., Ltd. Photosensitive composition for electrophotography

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635110A (en) * 1926-02-08 1927-07-05 John W Beach Paint
US1700404A (en) * 1926-03-11 1929-01-29 Alfred P Goodell Water paint
US2236061A (en) * 1937-05-27 1941-03-25 Du Pont Method of making films, threads, and the like
US2251296A (en) * 1938-06-01 1941-08-05 Du Pont Paper product
US2287161A (en) * 1940-01-23 1942-06-23 Du Pont Coated cellulosic products and method for producing the same
US2302816A (en) * 1941-01-11 1942-11-24 Toland Planographic printing
US2534650A (en) * 1947-05-09 1950-12-19 Warren S D Co Planographic printing plate and method of making same
US2367420A (en) * 1942-06-22 1945-01-16 Lithomat Corp Photogravure printing plate and method of making same
US2476800A (en) * 1946-05-07 1949-07-19 Westinghouse Electric Corp Rectifier
US2543801A (en) * 1948-05-20 1951-03-06 Du Pont Process for the preparation of shaped polyvinyl alcohol objects
US2663636A (en) * 1949-05-25 1953-12-22 Haloid Co Electrophotographic plate and method of producing same
US2662832A (en) * 1950-04-08 1953-12-15 Haloid Co Process of producing an electrophotographic plate
US2735785A (en) * 1953-07-30 1956-02-21 Process of electrostatic printing
US2875054A (en) * 1956-05-24 1959-02-24 Eastman Kodak Co Preparation of coatings of improved internal strength

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2331820A1 (en) * 1975-11-17 1977-06-10 Coulter Information Systems LITHOGRAPHIC PRINTING PLATE AND ITS MANUFACTURING PROCESS

Also Published As

Publication number Publication date
US2993787A (en) 1961-07-25
BE541668A (en)
FR1176922A (en) 1959-04-17

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