US4063507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for burning in planographic printing plates
Assignee: Fujifilm Holdings Corp
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Filing: 1976-06-03
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Granted: 1977-12-20
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Expires: 1996-06-03
Abstract
Abstract A process for producing a planographic printing plate comprising subjecting a light-sensitive planographic printing plate member to a burning in wherein the light-sensitive planographic printing plate member is treated with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof, prior to the burning in.
Inventors
- 👤 Tadao Toyama
- 👤 Masaru Watanabe
- 👤 Harumasa Kitago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:02
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/40; G03F7/405
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A process for producing a planographic printing plate comprising exposing and developing a light-sensitive printing plate; coating the exposed and developed surface of said plate with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof; drying said coating and then subjecting said treated plate to a burning-in without removal of said coating composition from said surface whereby printing can be carried out without applying a conventional surface smoothing treatment after the burning-in.
Claim 2
Dependent Claim
86 words
A process for producing a planographic printing plate comprising exposing and developing a light-sensitive printing plate; coating the exposed and developed surface of said plate with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof; drying said coating and then subjecting said treated plate to a burning-in without removal of said coating composition from said surface whereby printing can be carried out without applying a conventional surface smoothing treatment after the burning-in.
Claim 3
Dependent Claim
18 words
The process of claim 1, wherein the light-sensitive planographic plate member comprises a support of aluminum or zinc.
Claim 4
Dependent Claim
39 words
The process of claim 1, wherein the solution contains at least one compound selected from the group consisting of boric acid or the metal salts or ammonium salt thereof in a concentration of at least about 0.5 wt. %.
Claim 5
Dependent Claim
17 words
The process of claim 1, wherein the burning-in temperature is about 180° C to about 350° C.
Claim 6
Dependent Claim
15 words
The process of claim 4, wherein the burning-in temperature is 200° C to 300° C.
Claim 7
Dependent Claim
19 words
The process of claim 5, wherein the burning-in is conducted in a period of from 3 to 20 minutes.
Claim 8
Dependent Claim
40 words
The process of claim 6, wherein the solution contains at least one compound selected from the group consisting of boric acid, the alkali metal, alkaline earth metal or ammonium salts thereof, in an amount of from 3 to 10 wt%.
Claim 9
Dependent Claim
17 words
The process of claim 1 wherein the light-sensitive printing plate comprises an o-quinone diazide type light-sensitive material.
Claim 10
Dependent Claim
27 words
The process of claim 1 wherein the light-sensitive printing plate comprises a photosensitive composition selected from the group consisting of diazonium salts, azide compounds and photopolymerizable compounds.
References Cited (Backward Citations)
US2042003A
Cited
US2230981A
Cited
US2734298A
Cited
US3030210A
Cited
GB955687A
Cited
US3480435A
Cited
US3650742A
Cited
US3585031A
Cited
US3756823A
Cited
US3669018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |