Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Reexamination Certificate
2006-05-09
2006-05-09
Hirshfeld, Andrew H. (Department: 2854)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
C430S309000, C430S330000, C430S350000
Reexamination Certificate
active
07041432
ABSTRACT:
An improved apparatus for thermally developing a flexographic printing element to reveal a relief image on the surface and a method of using the apparatus to expose and develop a flexographic printing element. The apparatus typically comprises means for softening or melting non-crosslinked photopolymer on the imaged and exposed surface of the flexographic printing element; at least one roll that is contactable with the imaged surface of the flexographic printing element and capable of moving over at least a portion of the imaged surface of the flexographic printing element to remove the softened or melted non-crosslinked photopolymer on the imaged and exposed surface of the flexographic printing element; and means for maintaining contact between the at least one roll and the imaged and exposed surface of the flexographic printing element. The means for softening or melting non-crosslinked photopolymer on the imaged and exposed surface of the flexographic printing element comprise a heater positioned adjacent to the imaged surface of the flexographic printing element and/or heating the at least one roll that contactable with the imaged surface of the flexographic printing element. The apparatus may also contain an exposure device to crosslink and cure the imaged surface of the flexographic printing element prior to thermal development.
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Carmody & Torrance LLP
Hirshfeld Andrew H.
Zimmerman Joshua
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