GB1139892A - Method and material for thermorecording - Google Patents
Method and material for thermorecordingInfo
- Publication number
- GB1139892A GB1139892A GB604765A GB604765A GB1139892A GB 1139892 A GB1139892 A GB 1139892A GB 604765 A GB604765 A GB 604765A GB 604765 A GB604765 A GB 604765A GB 1139892 A GB1139892 A GB 1139892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- areas
- water
- dye
- polyvinyl alcohol
- layer
- 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
- B41C1/055—Thermographic processes for producing printing formes, e.g. with a thermal print head
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
- B41M5/366—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
1,139,892. Printing processes. GEVAERTAGFA N.V. 11 Feb., 1966 [11 Feb., 1965], No. 6047/65. Heading B6C. [Also in Division G2] A thermographic process comprises imagewise heating a material consisting of or containing a water-permeable layer which comprises polyvinyl alcohol of which at least 95% is vinyl alcohol units and thus rendering the material water-impermeable or less permeable in the heated areas. The exposed material may be developed by (1) treatment with an aqueous solution of a dye, a catalyst for initiating a colour reaction between components present in the material, a colour-forming component with the other component present in the material, a bleaching agent for a dye or silver present in the layer, or an etching agent for etching a metal support, the aqueous solution permeating the still water-permeable areas, (2) diffusion of a water-soluble dye, catalyst, colour forming component or a complexed silver salt from the water-permeable areas on to a receptor sheet which, if necessary, contains the requisite reactants, (3) removing the water-permeable areas by washing them out to produce a waterpermeable membrane which may be used in electrolytic printing or produce a printing plate after etching the support, or if the support is electrically conductive charging the remaining water-impermeable areas and powder developing these areas or transferring the charge to a receptor and developing; or if the support is a screen, producing a screen printing master and (4) transferring the water-permeable areas to a receptor sheet or by transferring portions of a dye sheet to the water-permeable areas to prodyce a dye master. The material may be exposed to infra-red radiation or to light intensity flash for 0.0001 to 0.01 second if the material contains light-absorbing, heat generating materials such as carbon black, heavy metals or their sulphides and oxides and certain dyes as in Specification 1,076,799. The material may also contain hydrophobic, thermoplastic polymer particles such as polyethylene dispersed in the polyvinyl alcohol layer as disclosed in Specification 1,139,891. In Example I, polyvinyl alcohol is coated on a paper support, image-wise exposed to infra-red radiation and developed by applying an aqueous dye solution to give a positive dye image. The material is now molten and pressed into contact with a carbon paper so that the dye layer of the carbon paper is transferred on to the dye image to produce a hectographic master. In Example 2, the polyvinyl alcohol layer contains carbon black and is exposed as above and the unexposed areas are transferred to a wetted receptor sheet to give a negative image thereon. In Example 3, the support is coated with a gelatine layer containing colloidal silver and over-coated with a polyvinyl alcohol so that after exposure, the silver is bleached out by a bleach solution which permeates the water-permeable areas of the polyvinyl alcohol. In Example 4, a stencil is produced by using Japan paper as support and washing out the unexposed areas of polyvinyl alcohol after exposure. In Example 5, a printing plate was made by dispersing polyethylene particles in the polyvinyl alcohol layer and hardening the layer after exposure. In Example 6 the layer contains carbon black and is image-wise exposed to a xenon discharge lamp for 2 x 10<SP>-4</SP> seconds and the non-exposed areas washed out.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB604765A GB1139892A (en) | 1965-02-11 | 1965-02-11 | Method and material for thermorecording |
NL6601617A NL6601617A (en) | 1965-02-11 | 1966-02-09 | |
DE19661571813 DE1571813A1 (en) | 1965-02-11 | 1966-02-10 | Thermographic registration process |
FR49215A FR1475796A (en) | 1965-02-11 | 1966-02-10 | Method of recording information using heat-sensitive equipment |
BE676329D BE676329A (en) | 1965-02-11 | 1966-02-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB604765A GB1139892A (en) | 1965-02-11 | 1965-02-11 | Method and material for thermorecording |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1139892A true GB1139892A (en) | 1969-01-15 |
Family
ID=9807449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB604765A Expired GB1139892A (en) | 1965-02-11 | 1965-02-11 | Method and material for thermorecording |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE676329A (en) |
DE (1) | DE1571813A1 (en) |
GB (1) | GB1139892A (en) |
NL (1) | NL6601617A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0899118A1 (en) * | 1997-08-29 | 1999-03-03 | Brother Kogyo Kabushiki Kaisha | Stamp member |
-
1965
- 1965-02-11 GB GB604765A patent/GB1139892A/en not_active Expired
-
1966
- 1966-02-09 NL NL6601617A patent/NL6601617A/xx unknown
- 1966-02-10 DE DE19661571813 patent/DE1571813A1/en active Pending
- 1966-02-11 BE BE676329D patent/BE676329A/xx unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0899118A1 (en) * | 1997-08-29 | 1999-03-03 | Brother Kogyo Kabushiki Kaisha | Stamp member |
US6000335A (en) * | 1997-08-29 | 1999-12-14 | Brother Kogyo Kabushiki Kaisha | Stamp member having a porous sheet |
EP1020298A2 (en) * | 1997-08-29 | 2000-07-19 | Brother Kogyo Kabushiki Kaisha | Stamp member |
EP1020298A3 (en) * | 1997-08-29 | 2000-08-30 | Brother Kogyo Kabushiki Kaisha | Stamp member |
Also Published As
Publication number | Publication date |
---|---|
DE1571813A1 (en) | 1971-01-07 |
NL6601617A (en) | 1966-07-25 |
BE676329A (en) | 1966-08-11 |
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