US3615423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocopying
Assignee: Agfa Gevaert NV
•
Filing: 1967-10-24
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Granted: 1971-10-26
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Expires: 1987-10-24
Abstract
Abstract A dispersion of solid hydrophobic thermoplastic polymer particles in a continuous phase of a hydrophilic binder on a support is imagewise exposed to heat. An aqueous solution of a colorant is diffused through the hydrophilic areas of the dispersion layer which were not exposed to heat and the support is imagewise colored.
Inventors
- 👤 Marcel Nicolas Vrancken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B41M5/366
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
65 words
The method of claim 1 wherein said heat-sensitive layer also includes dispersed throughout said binder finely divided particles of a pigment or dye absorbing electromatic radiation and converting the same into heat, and said heat-sensitive layer is exposed to an image of said radiation according to said information of such intensity and duration as to create a heat pattern internally within the image areas thereof.
Claim 2
Dependent Claim
33 words
developing the recording material by an aqueous solution penetrating the portions of the external layer remaining permeable after said exposure, which solution contains a dissolved dyestuff corresponding with the color to be reproduced;
Claim 3
Dependent Claim
17 words
The method of claim 2 wherein said radiation is within the range of visible to infrared light.
Claim 4
Dependent Claim
11 words
removing the external layer in entirety by rubbing it while wet;
Claim 5
Dependent Claim
14 words
A method according to claim 1, wherein said particles are wax or waxlike particles.
Claim 6
Dependent Claim
19 words
applying a new nonexposed external layer having said composition to the developed interlayer containing already a monocolor dyestuff image;
Claim 7
Dependent Claim
31 words
flash-exposing the new external layer as in step (1) but through a screened black-and-white silver separation negative corresponding with a second color separation image of the multicolor original to be reproduced;
Claim 8
Dependent Claim
12 words
A method according to claim 1, wherein said binder is water soluble.
Claim 9
Dependent Claim
22 words
A method according to claim 5, wherein the binder mainly contains gelatin of the type becoming more soluble in water when heated.
Claim 10
Dependent Claim
34 words
developing the recording material by an aqueous solution penetrating the portions of the external layer remaining permeable after said exposure, which solution contains a dissolved dyestuff corresponding with the color to be reproduced, and
Claim 11
Dependent Claim
29 words
A method according to claim 1, wherein the recording layer consists of polyvinyl alcohol containing at least 95 percent of vinyl alcohol units and (a) light-absorbing substance(s) distributed therein.
Claim 12
Dependent Claim
11 words
removing the external layer in entirety by rubbing it while wet;
Claim 13
Dependent Claim
19 words
applying a new nonexposed external layer of said composition to the developed interlayer already containing a bicolor dyestuff image;
Claim 14
Dependent Claim
22 words
A method according to claim 3, wherein the heat-sensitive layer contains carbon particles as the particles absorbing infrared radiation and visible light.
Claim 15
Dependent Claim
31 words
flash-exposing the new external layer as in step (1) but through a screened black-and-white silver separation negative corresponding with a third color separation image of the multicolor original to be reproduced;
Claim 16
Dependent Claim
21 words
A method according to claim 3, wherein the heat-sensitive layer contains silver as the particles absorbing infrared radiation and visible light.
Claim 17
Dependent Claim
34 words
developing the recording material by an aqueous solution penetrating the portions of the recording layer remaining permeable after said exposure, which solution contains a dissolved dyestuff corresponding with the color to be reproduced, and
Claim 18
Dependent Claim
34 words
A method according to claim 3, wherein the heat-sensitive layer is exposed to infrared and/or visible light for a period of less than 10 1 sec. with an intensity of at least 0.1 watt.sec./sq.cm.
Claim 19
Dependent Claim
25 words
removing the external layer in entirety by rubbing it while wet, and drying the recording material now containing a tricolor dyestuff image of the original.
Claim 20
Dependent Claim
31 words
A method according to claim 10, wherein the exposure is carried out by means of a flashlamp exposing the recording layer within a period of 10 2 to 10 5 sec.
Claim 21
Dependent Claim
27 words
A method according to claim 1, wherein the said hydrophobic thermoplastic polymer particles are present in the recording layer in a weight ratio of at least 3:1.
Claim 22
Dependent Claim
20 words
A method according to claim 1, wherein the hydrophobic thermoplastic polymer particles are polyethylene particles dispersed in gelatin and/or poly(N-vinylpyrrolidone).
Claim 23
Dependent Claim
18 words
A method according to claim 1, wherein said polymer particles size from 0.01 Mu to 50 Mu .
Claim 24
Dependent Claim
20 words
A method according to claim 1, wherein the said liquid is a solution of a dyestuff, or a dye-forming component.
Claim 25
Dependent Claim
22 words
A method according to claim 1, wherein the heat-sensitive layer is removed in entirely by rubbing it while in a wet condition.
Claim 26
Independent Claim
73 words
A method for recording a multicolor original by means of a recording material containing a water-permeable interlayer and external heat-sensitive layer comprised essentially of a dispersion of solid thermoplastic hydrophobic particles in a hydrophilic binder in a ratio by weight greater than 1:1, said binder also having dispersed therein black or dark-colored pigments or dyes, which absorb visible and/or infrared light and convert absorbed light into heat, said method comprising the steps of:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |