Method for Processing a Lithographic Printing Plate

Method for Processing a Lithographic Printing Plate

A method for processing a heat-sensitive positive-working lithographic printing plate material is disclosed which comprises at least two layers: -a first layer comprising an oleophilic resin and/or a vinyl acetal (co)polymer; -a second layer comprising a (co)polymer which is located between the supp...

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Hauptverfasser: Claes, Inge, Moriame, Philippe
Format: Patent
Sprache:eng
Schlagworte:
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES
STAMPS
TRANSPORTING
TYPEWRITERS
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creator Claes, Inge
Moriame, Philippe
description A method for processing a heat-sensitive positive-working lithographic printing plate material is disclosed which comprises at least two layers: -a first layer comprising an oleophilic resin and/or a vinyl acetal (co)polymer; -a second layer comprising a (co)polymer which is located between the support and the first layer; comprising the steps of: -treating the plate material with an alkaline development solution, -treating the plate material with a first gum solution and consecutively with a second gum solution which are configured as a cascade whereby the second gum solution overflows into the first gum solution; and which gum solutions include a buffer; characterized in that the pH of the first gum solution reaches a steady state value above the pKa value of the (co)polymer present in the second layer.
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-a second layer comprising a (co)polymer which is located between the support and the first layer; comprising the steps of: -treating the plate material with an alkaline development solution, -treating the plate material with a first gum solution and consecutively with a second gum solution which are configured as a cascade whereby the second gum solution overflows into the first gum solution; and which gum solutions include a buffer; characterized in that the pH of the first gum solution reaches a steady state value above the pKa value of the (co)polymer present in the second layer.</description><language>eng</language><subject>LINING MACHINES ; PERFORMING OPERATIONS ; PRINTING ; PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES ; STAMPS ; TRANSPORTING ; TYPEWRITERS</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20220915&amp;DB=EPODOC&amp;CC=US&amp;NR=2022288916A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20220915&amp;DB=EPODOC&amp;CC=US&amp;NR=2022288916A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Claes, Inge</creatorcontrib><creatorcontrib>Moriame, Philippe</creatorcontrib><title>Method for Processing a Lithographic Printing Plate</title><description>A method for processing a heat-sensitive positive-working lithographic printing plate material is disclosed which comprises at least two layers: -a first layer comprising an oleophilic resin and/or a vinyl acetal (co)polymer; 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subjects LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES
STAMPS
TRANSPORTING
TYPEWRITERS
title Method for Processing a Lithographic Printing Plate
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