US2004170931A1PendingUtilityA1

Developer composition for lithographic printing plate

41
Assignee: KONICA MINOLTA HOLDINGS INCPriority: Dec 24, 2002Filed: Dec 15, 2003Published: Sep 2, 2004
Est. expiryDec 24, 2022(expired)· nominal 20-yr term from priority
Inventors:Toshitsugu Suzuki
G03F 7/325
41
PatentIndex Score
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Claims

Abstract

A developer composition for a lithographic printing plate comprising on an aluminum plate support a photosensitive layer which comprises an ethylenically unsaturated monomer, a photopolymerization initiator and a polymeric binder is disclosed, wherein the developer composition contains water in an amount of not more than 10% by weight and is substantially free from a silicate. There is also disclosed a developer solution obtained by dissolving the developer composition in water.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A developer composition for a lithographic printing plate comprising on an aluminum plate support a photosensitive layer which comprises an ethylenically unsaturated monomer, a photopolymerization initiator and a polymeric binder, wherein the developer composition contains water in an amount of not more than 10% by weight and is substantially free from a silicate.  
     
     
         2 . The developer composition of  claim 1 , wherein the developer composition contains water in an amount of not more than 1% by weight.  
     
     
         3 . The developer composition of  claim 1 , wherein the developer composition contains an silicate in amount of not more than 0.5% by weight converted to SiO 2 .  
     
     
         4 . The developer composition of  claim 1 , wherein the developer composition comprises an alkali reagent.  
     
     
         5 . The developer composition of  claim 1 , wherein the developer composition is in the form of a paste.  
     
     
         6 . The developer composition of  claim 1 , wherein the developer composition is in the form of powder or granules.  
     
     
         7 . A developer solution for a lithographic printing plate comprising on an aluminum plate support a photosensitive layer which comprises an ethylenically unsaturated monomer, a photopolymerization initiator and a polymeric binder, wherein the developer solution is obtained by dissolving a developer composition in water, and the developer composition containing water in an amount of not more than 10% by weight and being substantially free from a silicate.  
     
     
         8 . The developer solution of  claim 7 , wherein the developer composition contains water in an amount of not more than 1% by weight.  
     
     
         9 . The developer solution of  claim 7 , wherein the developer composition contains an silicate in amount of not more than 0.5% by weight converted to SiO 2 .  
     
     
         10 . The developer solution of  claim 7 , wherein the the developer composition comprises an alkali reagent.  
     
     
         11 . The developer solution of  claim 7 , wherein the the developer composition is in the form of a paste.  
     
     
         12 . The developer solution of  claim 7 , wherein the the developer composition is in the form of powder or granules.

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