GB844695A - Method of preparing duplicating or negative master sheet - Google Patents
Method of preparing duplicating or negative master sheetInfo
- Publication number
- GB844695A GB844695A GB35553/56A GB3555356A GB844695A GB 844695 A GB844695 A GB 844695A GB 35553/56 A GB35553/56 A GB 35553/56A GB 3555356 A GB3555356 A GB 3555356A GB 844695 A GB844695 A GB 844695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- original
- master
- coating
- sheets
- 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
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L1/00—Devices for performing operations in connection with manifolding by means of pressure-sensitive layers or intermediaries, e.g. carbons; Accessories for manifolding purposes
- B41L1/20—Manifolding assemblies, e.g. book-like assemblies
- B41L1/34—Manifolding assemblies, e.g. book-like assemblies for making masters for hectographic duplicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/04—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using solvent-soluble dyestuffs on the master sheets, e.g. alcohol-soluble
Landscapes
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
844,695. Photo-mechanical printing surfaces. DITTO Inc. Nov. 21, 1956 [Nov. 21, 1955], No. 35553/56. Class 98(2) [Also in Group XVI] A method of preparing a master printing sheet comprises forming an assembly of sheets in contact with each other, the sheets comprising an original imaged sheet having text or design portions adapted to absorb heat in contact with a second sheet having a fusible coating thereon, exposing the surface of the original sheet to infra-red radiation to cause portions of the fusible coating corresponding to the text or design to adhere to the original sheet, and separating the sheets. The method is applicable to the production of master sheets for use in spirit duplicating processes, hectographic processes, and planographic or lithographic processes, the coating on the second sheet being chosen in accordance with the process for which the master to be prepared is to be used. As shown, the imaged original sheet 1 with the imaged side facing outwards is clamped, together with the second sheet 3 having a coating 4, on a cylinder 6 and rotated past a slot 9 in a member 8 beneath which is an infra-red source 10. The source 10 preferably has an intensity of 1,350 watts and is placed 1/16 inch from the surface of the original sheet. The rotation of the cylinder is such that the exposure time is 1/10 second. On removing the second sheet from the original sheet the back of the original sheet has imaged portions which correspond to and are a mirrorimage of the original image on the front of the sheet. The back of the sheet 1 may then be used as a master sheet for direct printing as in a spirit duplicating process. When the master is to be used in offset printing processes a direct reading image may be obtained by placing the original sheet face downwards on the sheet 3. Instead of a master sheet, a stencil or negative may be prepared by exposing the original sheet and a sheet coated with a marking medium which is opaque to ultra-violet radiation and yet becomes tacky or liquid when exposed to heat. After exposure the coating will be drawn away on the original sheet leaving a stencil or negative having areas transparent to ultra-violet light and corresponding to the original image and through which a sensitized plate may be exposed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US844695XA | 1955-11-21 | 1955-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB844695A true GB844695A (en) | 1960-08-17 |
Family
ID=22185156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35553/56A Expired GB844695A (en) | 1955-11-21 | 1956-11-21 | Method of preparing duplicating or negative master sheet |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE577286Q (en) |
FR (1) | FR1165125A (en) |
GB (1) | GB844695A (en) |
NL (2) | NL212359A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3230875A (en) * | 1963-01-16 | 1966-01-25 | Columbia Ribbon & Carbon | Thermographic duplication |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3129661A (en) * | 1960-03-31 | 1964-04-21 | Columbia Ribbon & Carbon | Novel duplicating processes |
US3203344A (en) * | 1961-02-13 | 1965-08-31 | Columbia Ribbon & Carbon | Lithographic printing plate imaging process |
NL275631A (en) * | 1961-03-08 | |||
NL299360A (en) * | 1962-10-25 |
-
0
- NL NL103022D patent/NL103022C/xx active
- NL NL212359D patent/NL212359A/xx unknown
-
1956
- 1956-11-20 FR FR1165125D patent/FR1165125A/en not_active Expired
- 1956-11-21 GB GB35553/56A patent/GB844695A/en not_active Expired
-
1959
- 1959-04-01 BE BE577286A patent/BE577286Q/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3230875A (en) * | 1963-01-16 | 1966-01-25 | Columbia Ribbon & Carbon | Thermographic duplication |
Also Published As
Publication number | Publication date |
---|---|
NL212359A (en) | |
BE577286Q (en) | 1959-07-31 |
FR1165125A (en) | 1958-10-20 |
NL103022C (en) |
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