US3628953A
Expired / Lapsed
US
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Thermorecording
Assignee: Agfa Gevaert NV
•
Filing: 1968-09-27
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Granted: 1971-12-21
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Expires: 1988-09-27
Abstract
Abstract Information is recorded by exposing to a heat image of such information a recording material carrying a recording layer consisting essentially of one or more of certain substantially solvent insoluble polymeric materials which, when exposed to heat, are rendered soluble in said solvent after which the imagewise heated layer is developed by contact with a liquid containing the solvent therefor so as to remove the heated areas from the layer. Preferably, the layer contains homogeneously distributed therethrough a dye or pigment which absorbs visible light or infrared radiation and converts the same to heat so that the exposure can be effected by exposing the layer to an image of such radiation.
Inventors
- 👤 Eric Maria Brinckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:20
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B41M5/368; B41C; B41C1/00; B41C1/10; B41C1/1008; B41C2210/00; B41C2210/02; B41C2210/06; B41C2210/20; B41C2210/22; B41C2210/24; B41C2210/26; B41C2210/262; Y; Y10; Y10S; Y10S430/00; Y10S430/145
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
3 words
a cationic hydroxypropyl-starch
Claim 2
Dependent Claim
23 words
developing the image-wise heated layer by contacting the same with a liquid containing said solvent and removing the heated areas from said layer.
Claim 3
Dependent Claim
47 words
A method of recording information according to claim 1, wherein the recording layer consists essentially of at least one of the materials listed under the numbers one to 11, and after the imagewise heating is contacted with water to remove the heated areas of the recording layer.
Claim 4
Dependent Claim
50 words
A method of recording information according to claim 1, wherein the recording layer consists essentially of at least one of the materials listed under the numbers 12 to 16 and after the imagewise heating is contacted with an alkaline aqueous liquid to remove the heated areas of the recording layer.
Claim 5
Dependent Claim
2 words
a hydroxypropylmethyl-cellulose
Claim 6
Dependent Claim
4 words
a cellulose acetate butyrate
Claim 7
Dependent Claim
49 words
A method of recording information according to claim 1, wherein the recording layer consists essentially of at least one of the materials listed under the numbers 16 to 21 and after the imagewise heating is contacted with a C1-C3 alkanol to remove the heated areas of the recording layer.
Claim 8
Dependent Claim
45 words
A method of recording information according to claim 1, wherein the recording layer consists essentially of at least one of the compounds 21 or 22 and after the imagewise heating is contacted with a lower ketone to remove the heated areas of the recording layer.
Claim 9
Dependent Claim
22 words
a melamine-formaldehyde resin, a methylol-melamine resin or an etherifieD methylol-melamine resin of the water-soluble type, which resins are weakly hardened after coating
Claim 10
Dependent Claim
11 words
an anionic water-soluble urea-formaldehyde resin, which is weakly hardened after coating
Claim 11
Dependent Claim
41 words
A method of recording information according to cLaim 1, wherein the recording layer consists essentially of the composition 23 and after the imagewise heating is contacted with a chlorinated aliphatic hydrocarbon compound to remove the heated areas of the recording layer.
Claim 12
Dependent Claim
37 words
A method of recording information according to claim 1, wherein the recording layer contains uniformly distributed therethrough a dye or pigment, which is capable of absorbing infrared radiation and/or visible light and converting the same to heat.
Claim 13
Dependent Claim
23 words
a resorcinol-formaldehyde resin soluble in ethanol or in a mixture of water and ethanol, and which becomes soluble in water alone by heating
Claim 14
Dependent Claim
18 words
a composition containing a water-soluble polyvinyl alcohol mixed with a compound containing at least one reactive carbonyl group
Claim 15
Dependent Claim
60 words
A method of recording information according to claim 1, wherein said imagewise heating is carried out by arranging said recording layer in contact with an original to be copied carrying information markings of infrared radiation absorbing material and exposing the resultant sandwich infrared radiation to heat said original markings and by conduction therefrom the contacting areas of said recording layer.
Claim 16
Dependent Claim
22 words
A method of recording information according to claim 1, wherein the recording layer contains a hectographic dye soluble in lower alcoholic solvents.
Claim 17
Dependent Claim
25 words
a composition containing an acidic compound and a water-insoluble polymer containing a basic nitrogen-containing heterocyclic nucleus of the type present in the following recurring unit:
Claim 18
Dependent Claim
67 words
a water-soluble polymer or copolymer of an Alpha , Beta -ethylenically unsaturated compound containing at least one carboxylic acid group and in admixture therewith a reactive compound forming a product with said unsaturated compound that is less soluble in water than the Alpha , Beta -ethylenically unsaturated compound and that on heating is dissociated again resulting in an increase of the solubility in water of the composition.
Claim 19
Dependent Claim
26 words
A method according to claim 1, wherein the polymer listed under number 14, comprise groups of the following structure: wherein R represents a lower alkyl group.
Claim 20
Dependent Claim
41 words
A method according to claim 1, wherein the polymer listed under number 14 is a polyester or polyamide containing the following structural group in their recurring units: wherein: R represents a lower alkyl group, and Y represents a bivalent hydrocarbon radical.
Claim 21
Dependent Claim
4 words
an alginic acid ester
Claim 22
Dependent Claim
7 words
a cresol-formaldehyde resin of the Novolak type
Claim 23
Dependent Claim
21 words
The method of claim 1 wherein the heated areas of said layer are removed by rinsing away with said solvent-containing liquid.
Claim 24
Dependent Claim
12 words
The method of claim 1 wherein said rinsing is accompanied by rubbing.
Claim 25
Dependent Claim
7 words
a phenol-formaldehyde resin of the Novolak type
Claim 26
Dependent Claim
15 words
a polymer containing an azo group linked through a carbon atom to a nitrile group
Claim 27
Dependent Claim
32 words
The method of claim 1 wherein said heated areas are removed by softening the same with said solvent-containing liquid and transferring to a receiving material brought into pressure contact therewith and separated.
Claim 28
Dependent Claim
23 words
A method of recording information according to claim 7, wherein said dye or pigment is susceptible to bleaching to render the same colorless.
Claim 29
Dependent Claim
1 words
poly-N-vinylpyrrolidone
Claim 30
Dependent Claim
4 words
crude and/or bleached shellac
Claim 31
Dependent Claim
59 words
A method of recording information according to claim 7, wherein the imagewise heating is carried out by imagewise exposure to radiation which is absorbed by said dye or pigment in the recording layer and converted into heat, the exposure being of a degree sufficient to render removable the heated portions of the recording layer when wet with said liquid.
Claim 32
Dependent Claim
25 words
A method of recording information according to claim 16, wherein the exposure is a high-intensity imagewise exposure of not more than about 0.1 sec. duration.
Claim 33
Dependent Claim
1 words
poly(1,2-dihydro-2,2,4-trimethylquinoline)
Claim 34
Dependent Claim
8 words
poly-N-vinylpyrrolidone in admixture with a water-soluble melamine-formaldehyde resin
Claim 35
Dependent Claim
18 words
A method of recording information according to claim 16, wherein the recording layer contains diffusion-resistant dyes or pigments.
Claim 36
Dependent Claim
32 words
A method of recording information according to claim 13, wherein the exposure is carried out by means of a flash lamp emitting a larger part of visible light than of infrared radiation.
Claim 37
Dependent Claim
32 words
a composition containing polyvinyl alcohol or a partially hydrolized polyvinyl acetate mainly containing vinyl alcohol units, mixed with a quinone-diazide compound and an aldehyde or latent aldehyde splitting off formaldehyde on heating
Claim 38
Dependent Claim
11 words
a phenol-formaldehyde resin whose solubility in ethanol is increased by heating
Claim 39
Dependent Claim
19 words
A method of claim 18 wherein said polymeric compound is a Novolak resin of formaldehyde and a hydroxy-phenyl compound.
Claim 40
Dependent Claim
31 words
An article of manufacture which comprises a layer containing an acidic compound and a water-insoluble polymer containing a basic nitrogen-containing heterocyclic nucleus of the type present in the following recurring unit:
Claim 41
Dependent Claim
15 words
a copoly(styrene/N-vinylpyrrolidone) applied from a latex, undergoing an increase in solubility in ethanol by heating
Claim 42
Dependent Claim
17 words
a copoly(styrene/acrylate ester) applied from a latex and undergoing an increase in solubility in acetone by heating
Claim 43
Dependent Claim
10 words
a composition containing a copoly(butadiene/styrene) and an o-quinone-diazide compound, and
References Cited (Backward Citations)
US3514288A
Cited
US3493371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |