The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2002
Filed:
May. 03, 2000
Bradley Leonard Beach, Lexington, KY (US);
Sean David Smith, Lexington, KY (US);
Jing X. Sun, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
The invention relates to an ink jet printer nozzle plate containing nozzle holes and having a durable non-wettable layer on at least one surface thereof. The nozzle plate includes a polyimide material and the non-wettable layer contains a derivative of an amine-terminated silane compound, the amine-terminated silane compound derivative being covalently bound to the polyimide material of the nozzle plate. The layer also contains a derivative of a polydialkylsiloxane compound having a number average molecular weight ranging from about 400 to about 150,000 and an end group reactive with the amine-terminated silane compound derivative. The polydialkylsiloxane compound derivative is bound to the amine-terminated silane compound derivative by a condensation reaction to provide the durable non-wettable layer on the surface of the nozzle plate. Because of covalently bonding the silane and polydialkylsiloxane materials to the polyimide, the non-wettable layer remains substantially durable throughout the life of a printhead containing the nozzle plate.