Patent ID: 6673510
Filing Date: 2004-01-06
Classification: B41C,Y10S

Abstract:
A photosensitive composition comprising:(a) an infrared absorbing agent represented by the following formula (II); and (b) a polymer compound which is insoluble in water and soluble in an aqueous alkali solution, wherein; the solubility of the photosensitive composition in an aqueous alkali solution is changed by radiation of an infrared laser; wherein X1 and X2 independently represent â€”CR8R9â€”, â€”Sâ€”, â€”Seâ€”, â€”NR10â€”, â€”CH&boxH;CHâ€” or â€”Oâ€”, n denotes an integer of 2, 3 or 4, R1 and R2 independently represent an alkyl group having 1 to 18 carbon atoms, R3 represents a group selected from the group consisting of an alkyl group having 1 to 10 carbon atoms, a substituted alkyl group having 1 to 10 carbon atoms, an aryl group, a substituted aryl group and a heterocyclic group having 5 to 6 carbon atoms in the ring, R4, R5, R6 and R7 independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a substituted alkyl group having 1 to 10 carbon atoms and may represent a plurality of atoms required for R4 and R5 or R6 and R7 to be combined with each other to form an aliphatic 5- or 6-membered ring, an aromatic 6-membered ring, an aromatic 10-membered ring, a substituted aromatic 6-membered ring or a substituted aromatic 10-membered ring, R8 and R9 independently represent an alkyl group having 1 to 18 carbon atoms, a substituted alkyl group having 1 to 18 carbon atoms, an aryl group having 6 to 18 carbon atoms or a substituted aryl group having 6 to 18 carbon atoms, R10 represents an alkyl group having 1 to 18 carbon atoms, a substituted alkyl group having 1 to 18 carbon atoms, an aryl group having 6 to 18 carbon atoms or a substituted aryl group having 6 to 18 carbon atoms and Q represents a counter ion having a molecular weight of 70 or more.