Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Reexamination Certificate
2011-07-19
2011-07-19
Kelly, Cynthia (Department: 1722)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
C427S407100, C156S278000, C156S292000, C156S307700, C156S314000
Reexamination Certificate
active
07981590
ABSTRACT:
Method for producing a base material (25) for screen printing, which comprises a protective film (10), a screen (5) and an intermediate resist layer (13) comprising photosensitive material, the method comprising the steps of applying a first resist layer (15) to one side of the protective film (10), drying the first resist layer (15), applying an additional resist layer (17) to the first resist layer (15), and then applying a screen (5) to the additional resist layer (17) under pressure, with that side of the additional resist layer (17) to which the screen (5) is applied being wet. The invention also describes a base material (25) for screen printing, which comprises a protective film (10), an electroformed screen (5) and an intermediate resist layer (13) comprising photosensitive material.
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W. Pfirrmann et al., Screen Printing, Jun. 1990; “The Rz Value: A New Concept in Screen-Quality Evaluation”; retrieved from the internet (URL: http://www.kiwo.com/Articles/RZ%20Value%20article%20Part%201.pdf).
Eoff Anca
Hoffmann & Baron , LLP
Kelly Cynthia
Stork Prints B.V.
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