Patent ID: 8017192

Claim:
A radiation cured coating on a printer component obtained by curing a composition comprising (a) a reactive oligomer capable of radiation curing having a number average molecular weight having (Mn) of greater than 1500, wherein said reactive oligomer is present at a level of greater than fifty percent by weight of the coating composition wherein said reactive oligomer has the following formula: wherein n has a value of 1-8, R1 is a hydrogen atom or a substituted or unsubstituted aliphatic or aromatic group and G contains one or more of the following groups: urethane, urea, urea-urethane, amide, siloxane, ether, butadiene, or ester functionality; and (b) a reactive diluent capable of radiation curing having a Mn of less than or equal to 1500 wherein said reactive diluent is present at a level of less than fifty percent by weight of the coating composition and has the following formula: wherein n has a value of 1-6, R1 comprises a hydrogen atom or a substituted or unsubstituted aliphatic or aromatic group and G contains one or more of the following groups: urethane, urea, urea-urethane, amide, siloxane, ether, butadiene, ester, trifluroethyl or mecapto functionality; and wherein (1) said coating composition is present at a level of about 90-100% solids and comprises one layer in contact with said printer component and an outer layer with an exposed surface; (2) the tensile modulus of said layer in contact with said printer component is less than or equal to 75,000 psi and said outer layer with said exposed surface has a tensile modulus of greater than 75,000 psi; and (3) said component is located in a printer cartridge.