METHOD FOR CLEANING ALUMINUM SUPPORT

PROBLEM TO BE SOLVED: To provide a method for cleaning an aluminum support by which a lithographic printing plate of a successful quality can be manufactured regardless of the grade of the lithographic printing plate. SOLUTION: This method employs a water wash process consisting of two or more stage...

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Bibliographic Details
Main Author SANO ATSUHIRO
Format Patent
LanguageEnglish
Published 26.08.2004
Edition7
Subjects
CLEANING
CLEANING IN GENERAL
LINING MACHINES
MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE
PERFORMING OPERATIONS
PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
PREVENTION OF FOULING IN GENERAL
PRINTING
PRINTING PLATES OR FOILS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PROBLEM TO BE SOLVED: To provide a method for cleaning an aluminum support by which a lithographic printing plate of a successful quality can be manufactured regardless of the grade of the lithographic printing plate. SOLUTION: This method employs a water wash process consisting of two or more stages to water-wash an aluminum web W to be used for a thermal digital plate. The water wash process uses a cleaning system 10 which reserves well water L1 in a first water wash tank 12 and pure water L2 in a second water wash tank 14. The conveying speed and the like of the aluminum web W is previously set in the way that a calcium ion concentration remaining on the surface of the aluminum web W after cleaning it with the pure water L2 in the second water wash tank 14 falls within a favorable range without being influenced by the calcium ion concentration contained in the well water L1. Consequently, it is possible to manufacture the thermal digital plate of a successful quality regardless of grade even in case various grades of the thermal digital plates are manufactured by forming various kinds of photosensitive layers on the aluminum web W after cleaning. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20030027959