US5262275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexographic printing element having an IR ablatable layer and process for making a flexographic printing plate
Assignee: EIDP Inc
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Filing: 1992-08-07
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Granted: 1993-11-16
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Expires: 2012-08-07
Abstract
Abstract A photosensitive printing element having an IR ablatable layer and at least one barrier layer as set forth within and a process for making a flexographic printing plate from such an element are disclosed.
Inventors
- 👤 Roxy N. Fan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:25
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/20; G03F7/2002; G03F7/2014; G03F7/2016; G03F7/202; B; B41; B41C; B41C1/00; B41C1/02; B41C1/04; B41C1/05; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/146
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
A photosensitive printing element used for preparing flexographic printing plates comprising in the order listed: (a) a support, (b) a photopolymerizable layer comprising an elastomeric binder, at least one monomer and an initiator having sensitivity to non-infrared actinic radiation, said layer being soluble, swellable or dispersible in a developer solution; (c) at least one barrier layer which is soluble, swellable or dispersible or liftable in the developer solution for the photopolymerizable layer and which is substantially transparent to actinic radiation; and (d) at least one layer of infrared radiation sensitive material which is substantially opaque to actinic radiation, wherein the infrared-sensitive material is ablatable form the surface of the barrier layer upon exposure to infrared laser radiation.
Claim 2
Dependent Claim
117 words
A photosensitive printing element used for preparing flexographic printing plates comprising in the order listed: (a) a support, (b) a photopolymerizable layer comprising an elastomeric binder, at least one monomer and an initiator having sensitivity to non-infrared actinic radiation, said layer being soluble, swellable or dispersible in a developer solution; (c) at least one barrier layer which is soluble, swellable or dispersible or liftable in the developer solution for the photopolymerizable layer and which is substantially transparent to actinic radiation; and (d) at least one layer of infrared radiation sensitive material which is substantially opaque to actinic radiation, wherein the infrared-sensitive material is ablatable form the surface of the barrier layer upon exposure to infrared laser radiation.
Claim 3
Dependent Claim
19 words
An element according to claim 1 which further comprises (e) a strippable coversheet which is adjacent to layer (d).
Claim 4
Dependent Claim
20 words
An element according to claims 1 or 2 wherein carbon black is present in the infrared radiation sensitive layer (d).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |