Patent ID: 6028618
Filing Date: 2000-02-22
Classification: B41J

Abstract:
A thermal printing head comprising an outermost protective layer having an outermost surface for contacting a printing medium and a protective coating on said outermost surface of said outermost protective layer, wherein said protective coating comprises a hydrolyzed silane, said silane having the general formula: SiR.sup.1 R.sup.2 R.sup.3 R.sup.4 wherein R.sup.1, R.sup.2 and R.sup.3 are independently a C1 to C4 alkoxy group, a substituted C1 to C4 alkoxy group, bromine, or chlorine; and R.sup.4 is a C1 to C4 alkyl group; a substituted C1 to C4 alkyl group, a C1 to C4 alkoxy group or a substituted C1 to C4 alkoxy group.