PROCESSING METHOD OF PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE

PURPOSE:To stably process a photosensitive planographic printing plate without exchanging a rinse solution for a long time by adding a rinse replenishing solution having specific concentration to the rinse solution. CONSTITUTION:An automatic developing device is constituted of an inserting part A fo...

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Bibliographische Detailangaben
Hauptverfasser: SUGAIWA TAKAYUKI, WATANABE SHINYA, FUKUMURO IKU, UEHARA MASABUMI, OTA TOMOHISA
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To stably process a photosensitive planographic printing plate without exchanging a rinse solution for a long time by adding a rinse replenishing solution having specific concentration to the rinse solution. CONSTITUTION:An automatic developing device is constituted of an inserting part A for inserting a photosensitive planographic printing plate, a developing part B, a water washing part C, a rinse processing part D and a drying part E and rinse solution vessel 30 is provided in the rinse processing part D. The concentrated rinse replenishing solution and a dilution water are individually fed to the rinse solution vessel 30 and are mixed in the rinse solution vessel 30 to make the rinse replenishing solution. The rinse replenishing solution having >=0.2 times to =0.8 times concentration of the new rinse solution is added to the rinse solution and water is individually added to the rinse solution. When the concentration is =0.8 times, precipitates are easily generated in the rinse solution.