Appeal No. 2001-0743
Application 08/938,346
Representative claim 1 is reproduced as follows:
1. A thin film printhead, comprising:
a thin film substrate comprising a plurality of thin film
layers;
a plurality of ink firing heater resistors defined in said
plurality of thin film layers;
a polymer fluid barrier layer; and
a diamond like carbon layer disposed on said plurality of
thin film layers, with said polymer fluid barrier layer disposed
directly on said carbon layer, for bonding said polymer fluid
barrier layer to said thin film substrate, such that said carbon
layer is formed between said plurality of ink firing heater
resistors and said polymer fluid barrier layer.
The examiner relies on the following references:
Helbert 4,497,890 Feb. 05, 1985
Ikeda 4,663,640 May 05, 1987
Drake et al. (Drake) 4,678,529 July 07, 1987
Burolla 5,255,022 Oct. 19, 1993
Sueoka et al. (Sueoka) 5,485,185 Jan. 16, 1996
R. E. Schroder et al. (Schroder), “Analysis of the composite
structures in diamond thin films by Raman spectroscopy,” Physical
Review B, Vol. 41, No. 6, February 15, 1990, pages 3738-3745.
Dylyn®: A Novel Coating with Unique Properties, an Advanced
Refractory Technologies White Paper, date unknown (hereinafter
Dylyn).
The following rejections are on appeal before us:
1. Claims 1, 4-6 and 11-16 stand rejected under 35 U.S.C.
§ 103 as being unpatentable over the teachings of Drake in view
of Burolla, Ikeda and Dylyn.
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