Single exposure positive contact multilayer photosolubilizable litho element with two quinone diazide layers
US4504566A · kind A · utility
11Cited by
19References
9Claims
0Family size
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Key dates
| Filing date | Jun 22, 1984 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Jun 22, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/023
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Multilayer photosolubilizable litho element comprising (1) support, (2) photosolubilizable dye or pigment-containing layer having an optical density in the visible region of the spectrum of at least 2.0 comprising a quinone diazide and at least one acidic polymeric binder, and (3) photosolubilizable layer comprising a quinone diazide compound and at least two acidic polymeric binders having carboxylic acid substituents, one binder having an acid number below 110, preferably poly(methylmethacrylate/methacrylic acid). The element is useful as a single exposure positive contact litho film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.