Patent ID: 6399271
Filing Date: 2002-06-04
Classification: B41C,B41N,G03F,Y10S

Abstract:
A planographic printing member precursor comprising a first component and a second component, said first and second components being arranged to interact in areas exposed to imaging radiation for providing a surface having a first affinity for ink and only one of either said first or second components being removable in non-exposed areas for providing a surface having a second affinity for ink different to said first affinity, wherein said first component includes one or more hydroxy groups, and said second component comprises one of the following: (i) a compound of the general formula wherein M represents a silicon or titanium atom, with the proviso that when M represents a titanium atom, R1 and R2 represent hydroxy groups and R3 and R4 represent alkoxy groups substituted by a groupâ€”COOQ wherein Q represents an optionally substituted alkyl group or a cationic group, and when M represents a silicon atom, R1, R2 and R3 independently represent a hydroxy group or an optionally-substituted alkyl group, and R4 represents an optionally-substituted alkyl group; or (ii) a compound selected from the group consisting of