Claims
- 1. A process for recording information which comprises irradiating, with a modulated laser beam, a photosensitive and heat-sensitive polymer having conjugated polyenes and sulfonic acid groups and an absorbance ratio of a strong band in the region of 1200 cm.sup.-1 to 1300 cm.sup.-1 assignable to sulfonic acid groups adjacent to conjugated polyenes of at least 3 sequence lengths to a strong band near 1050 cm.sup.-1 assignable to sulfonic acid groups in the IR spectrum of at least 0.6.
- 2. The process of claim 1, wherein the sulfonic acid groups of the photosensitive and heat-sensitive polymer are silver sulfonate groups or coppersulfonate groups.
- 3. The process of claim 1, wherein the photosensitive and heat-sensitive polymer is in the form of a film or sheet having a thickness of 10 .mu.m to 500 .mu.m.
- 4. The process of claim 3, wherein the photosensitive and heat-sensitive polymer is in the form of a film or sheet having a thickness of 100 .mu.m to 200 .mu.m.
- 5. The process of claim 1, wherein the photosensitive and heat-sensitive polymer has a degree of sulfonation of 5.times.10.sup.-5 milliequivalent/cm.sup.2 to 1.times.10.sup.-1 milliequivalent/cm.sup.2.
- 6. The process of claim 1, wherein the photosensitive and heat-sensitive polymer is obtained by the sulfonation of a polymer is obtained by the sulfonation of a polymer of an ethylenically unsaturated monomer having a number average molecular weight of at least 10,000 or a polymer having conjugated polyenes and a number average molecular weight of at least 10,000 and selected from the group consisting of (a) a homopolymer or copolymer of an olefin having 2 to 8 carbon atoms; (b) a homopolymer or copolymer of a halogenated olefin having 2 to 3 carbon atoms and a copolymer of the halogenated olefin and an olefin having 2 to 8 carbon atoms; (c) a homopolymer or copolymer of an olefin having a polar group and a copolymer of the olefin and an olefin having 2 to 8 carbon atoms; (d) a crosslinked aromatic polymer comprising 50 to 98% by mol of a monovinyl or monovinylidene aromatic monomer unit and 2 to 50% by mol of a polyvinyl monomer unit; and (e) a homopolymer or copolymer having conjugated polyenes of at least 3 sequence lengths with fuming sulfuric acid or sulfuric anhydride at a temperature of -30.degree. C. to 70.degree. C.
- 7. The process of claim 6 wherein the polymer to be sulfonated has a water absorption of at most 2.0%.
Priority Claims (8)
Number |
Date |
Country |
Kind |
62-83071 |
Apr 1987 |
JPX |
|
62-91964 |
Apr 1987 |
JPX |
|
62-95055 |
Apr 1987 |
JPX |
|
62-118865 |
May 1987 |
JPX |
|
62-134934 |
Jun 1987 |
JPX |
|
62-145235 |
Jun 1987 |
JPX |
|
171074 |
Jul 1987 |
JPX |
|
62-174899 |
Jul 1987 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 554,751 filed Jul. 20, 1990 now U.S. Pat. No. 5,025,266 which is a division of application Ser. No. 171,590, filed Mar. 22, 1988, now U.S. Pat. No. 4,965,322.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4687736 |
Hanamura et al. |
Jul 1987 |
|
5004660 |
Van Andel et al. |
Apr 1991 |
|
Divisions (2)
|
Number |
Date |
Country |
Parent |
554751 |
Jul 1990 |
|
Parent |
171590 |
Mar 1988 |
|