US4788124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal recording method and material
Assignee: Mead Corp
•
Filing: 1987-08-19
•
Granted: 1988-11-29
•
Expires: 2007-08-19
Abstract
Abstract An imaging process which comprises image-wise simultaneously exposing to heat and light or ultraviolet radiation an imaging material comprising a support having a layer of photosensitive microcapsules on the surface thereof, said microcapsules containing an internal phase including an image-forming agent and a photosensitve composition which undergoes a change in viscosity, melting point, softening point to heat and light or ultraviolet radiation but which remains essentially unchanged in the presence of either heat or light or ultraviolet radiation alone; assembling said imaging material with an image-receiving sheet and subjecting the assembly to a uniform transfer force such that said image-forming agent is image-wise transferred to said imaging material; wherein said photohardenable composition includes a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound being capable of absorbing light and producing free radicals which initiate free radical polymerization or crosslinking of said polymerizable or crosslinkable material in the presence of heat.
Inventors
- 👤 Richard F. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:21
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/115; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
167 words
An imaging process which comprises image-wise simultaneously exposing to heat and light or ultraviolet radiation an imaging material comprising a support having a layer of photosensitive microcapsules on the surface thereof, said microcapsules containing an internal phase including an image-forming agent and a photosensitive composition which undergoes a change in viscosity, melting point, softening point or glass transition point when simultaneously exposed to heat and light or ultraviolet radiation but which remains essentially unchanged when exposed to either heat or light or ultraviolet radiation alone; assembling said imaging material with an image-receiving sheet and subjecting the assembly to a uniform transfer force such that said image-forming agent is image-wise transferred to said imaging material; wherein said photosensitive composition includes a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound being capable of absorbing light and producing free radicals which initiate free radical polymerization or crosslinking of said polymerizable or crosslinkable material in the presence of heat.
Claim 2
Dependent Claim
167 words
An imaging process which comprises image-wise simultaneously exposing to heat and light or ultraviolet radiation an imaging material comprising a support having a layer of photosensitive microcapsules on the surface thereof, said microcapsules containing an internal phase including an image-forming agent and a photosensitive composition which undergoes a change in viscosity, melting point, softening point or glass transition point when simultaneously exposed to heat and light or ultraviolet radiation but which remains essentially unchanged when exposed to either heat or light or ultraviolet radiation alone; assembling said imaging material with an image-receiving sheet and subjecting the assembly to a uniform transfer force such that said image-forming agent is image-wise transferred to said imaging material; wherein said photosensitive composition includes a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound being capable of absorbing light and producing free radicals which initiate free radical polymerization or crosslinking of said polymerizable or crosslinkable material in the presence of heat.
Claim 3
Dependent Claim
68 words
The imaging process of claim 1 wherein said ionic dye-reactive counter ion compound is a cationic dye-borate anion complex represented by the formula (I) ##STR36## where D is a cationic dye moiety; and R 1 , R 2 , R 3 , and R 4 are the same or different and selected from the group consisting of alkyl, aryl, aralkyl, alkaryl, alkenyl, alkynyl, alicyclic, heterocyclic, and allyl groups.
Claim 4
Dependent Claim
29 words
The imaging process of claim 2 wherein said cationic dye is selected from the group consisting of cationic methine, polymethine, triarylmethane, indoline, azine, thiazine, xanthene, oxazine, and acridine dyes.
Claim 5
Dependent Claim
27 words
The imaging process of claim 3 wherein at least one of R 1 , R 2 , R 3 , and R 4 is an alkyl group.
Claim 6
Dependent Claim
18 words
The imaging process of claim 1 wherein said ionic dye-reactive counter ion compound is an anionic dye compound.
Claim 7
Dependent Claim
21 words
The imaging process of claim 5 wherein said anionic dye is selected from the group consisting of xanthene and oxonol dyes.
Claim 8
Dependent Claim
20 words
The imaging process of claim 5 wherein said ionic dye counter ion compound is an anionic dye onium ion complex.
Claim 9
Dependent Claim
108 words
A thermal recording material comprising a support having a layer of microcapsules on one surface thereof, said microcapsules containing an internal phase including an image-forming agent and a composition which is hardened upon exposure to a combination of heat and light or ultraviolet radiation but which is not hardened upon exposure to either heat or light alone, said composition comprising a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound being capable of absorbing light and producing free radicals which initiate free radical polymerization or crosslinking of said polymerizable or crosslinkable material in the presence of heat.
Claim 10
Dependent Claim
108 words
A thermal recording material comprising a support having a layer of microcapsules on one surface thereof, said microcapsules containing an internal phase including an image-forming agent and a composition which is hardened upon exposure to a combination of heat and light or ultraviolet radiation but which is not hardened upon exposure to either heat or light alone, said composition comprising a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound, said ionic dye-reactive counter ion compound being capable of absorbing light and producing free radicals which initiate free radical polymerization or crosslinking of said polymerizable or crosslinkable material in the presence of heat.
Claim 11
Dependent Claim
68 words
The thermal recording material of claim 8 wherein ionic dye-reactive counter ion compound is a cationic dye-borate anion complex represented by the formula (I) ##STR37## where D is a cationic dye moiety; and R 1 , R 2 , R 3 , and R 4 are the same or different and selected from the group consisting of alkyl, aryl, aralkyl, alkaryl, alkenyl, alkynyl, alicyclic, heterocyclic, and allyl groups.
Claim 12
Dependent Claim
30 words
The thermal recording material of claim 9 wherein said cationic dye is selected from the group consisting of cationic methine, polymethine, triarylmethane, indoline, azine, thiazine, xanthene, oxazine, and acridine dyes.
Claim 13
Dependent Claim
28 words
The thermal recording material of claim 10 wherein at least one of R 1 , R 2 , R 3 , and R 4 is an alkyl group.
Claim 14
Dependent Claim
19 words
The thermal recording material of claim 11 wherein said ionic dye-reactive counter ion compound is an anionic dye compound.
Claim 15
Dependent Claim
22 words
The thermal recording material of claim 12 wherein said anionic dye is selected from the group consisting of xanthene and oxonol dyes.
Claim 16
Dependent Claim
21 words
The thermal recording material of claim 13 wherein said ionic dye counter ion compound is an anionic dye onium ion complex.
References Cited (Backward Citations)
US3567453A
Cited
US4307182A
Cited
US4343891A
Cited
US4399209A
Cited
US4500624A
Cited
US4450227A
Cited
US4447521A
Cited
US4562137A
Cited
US4576891A
Cited
US4622282A
Cited
US4689286A
Cited
US4701397A
Cited
JPS6260694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |