GB896010A - Planographic printing plates - Google Patents
Planographic printing platesInfo
- Publication number
- GB896010A GB896010A GB20658/60A GB2065860A GB896010A GB 896010 A GB896010 A GB 896010A GB 20658/60 A GB20658/60 A GB 20658/60A GB 2065860 A GB2065860 A GB 2065860A GB 896010 A GB896010 A GB 896010A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal salt
- formate
- adhesive
- coating
- casein
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1091—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/03—Chemical or electrical pretreatment
- B41N3/036—Chemical or electrical pretreatment characterised by the presence of a polymeric hydrophilic coating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
896,010. Printing surfaces. WARREN CO., S. D. June 13,1960 [Sept. 21,1959], No. 20658/60. Class 100(2) A planographic printing plate comprises a paper base and a coating thereon having a planographic printing surface, the coating comprising an insoluble hydrophilic adhesive and a finely divided inert mineral pigment, and having therein capillary interstices and pores containing a water-soluble mixture of a divalent metal salt and a multivalent metal salt, these salts being present in substantial excess of the quantity capable of reacting with the adhesive, and the weight ratio of the divalent metal salt to the multivalent metal salt lying between 1 to 9 and 9 to 1. The divalent metal salt consists of zinc acetate or zinc formate, and the multivalent malarl salt consists of aluminium acetate, chloride, formate, or sulphate, or cerium chloride, ferric formate, or zirconium acetate. The coating includes insolubilized casein or carboxymethyl cellulose adhesive. In one example, the paper base is made from wood fibres mixed with rosin size, melamine-formaldehyde resin and alum, and is washed with casein formaldehyde, dried and calendered. It is then coated on the non-printing side with clay, casein, and dimethylol urea to prevent curling, and the printing side is coated with a pigment of clay and titanium dioxide, sodium methyl cellulose, melamineformaldehyde resin, a wetting agent, tributyl phosphate, water, and phosphoric acid. The latter coating, after drying, is then coated with an aqueous solution containing zinc formate, aluminium formate, butanol, a wetting agent, and water. The simple metal salts may be replaced by double salts. The quantity of the soluble metal salts left in the surface pores of the printing plate is in substantial excess of that used . up by reaction with the adhesive, the excess being free to react with an ingredient of the aqueous lithographic solutions which are normally applied to the plate in use. Specifications 633,746, 633,747, 692,387 and 766,235 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US840999A US3020839A (en) | 1959-09-21 | 1959-09-21 | Planographic printing plates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB896010A true GB896010A (en) | 1962-05-09 |
Family
ID=25283763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20658/60A Expired GB896010A (en) | 1959-09-21 | 1960-06-13 | Planographic printing plates |
Country Status (6)
Country | Link |
---|---|
US (1) | US3020839A (en) |
BE (1) | BE593352A (en) |
DE (1) | DE1151526B (en) |
FR (1) | FR1262534A (en) |
GB (1) | GB896010A (en) |
NL (2) | NL253764A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3220346A (en) * | 1962-06-20 | 1965-11-30 | Millen Ind Inc | Planographic printing plate |
US3254597A (en) * | 1962-08-03 | 1966-06-07 | Oxford Paper Co | Planographic printing plates |
US3357352A (en) * | 1964-01-24 | 1967-12-12 | Appleton Coated Paper Company | Paper base planographic printing plates |
US3445224A (en) * | 1965-04-19 | 1969-05-20 | Dick Co Ab | Preparation of imaged offset master |
US3639122A (en) * | 1968-06-07 | 1972-02-01 | Ricoh Kk | Vinyl-amino resin interlayer for electrophotographic member used in offset printing |
US3622373A (en) * | 1969-01-21 | 1971-11-23 | Appleton Coated Paper Co | A planographic printing plate |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA475219A (en) * | 1951-07-10 | H. Frost Frederick | Planographic printing plates and treatment thereof | |
US2534650A (en) * | 1947-05-09 | 1950-12-19 | Warren S D Co | Planographic printing plate and method of making same |
NL76463C (en) * | 1950-07-19 |
-
0
- NL NL120086D patent/NL120086C/xx active
- NL NL253764D patent/NL253764A/xx unknown
-
1959
- 1959-09-21 US US840999A patent/US3020839A/en not_active Expired - Lifetime
-
1960
- 1960-06-13 GB GB20658/60A patent/GB896010A/en not_active Expired
- 1960-07-19 FR FR833355A patent/FR1262534A/en not_active Expired
- 1960-07-25 BE BE593352A patent/BE593352A/en unknown
- 1960-08-03 DE DES69763A patent/DE1151526B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1151526B (en) | 1963-07-18 |
US3020839A (en) | 1962-02-13 |
NL253764A (en) | |
BE593352A (en) | 1960-11-14 |
FR1262534A (en) | 1961-05-26 |
NL120086C (en) |
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