Appeal No. 2001-0596
Application 08/824,344
Representative claim 1 is reproduced as follows:
1. A method for changing printer drivers in a computer-
printer system, comprising the steps of:
sending a print command to a printer to begin a print
operation;
periodically transmitting a response request signal to
said printer;
determining that an error has occurred when said printer
fails to respond to said response request signal;
checking whether said error corresponds to any one of a
plurality of specific error types stored in a memory of a
computer of said computer-printer system;
stopping said print operation when said step of checking
determines that said error does not correspond to any of said
specific error types stored in said memory;
changing from a printer driver initially set to control
said printer to a second printer driver stored in said memory
when said error corresponds to one of said specific error types
corresponding to an abnormal operation state of said initially
set printer driver; and
setting up said second printer driver to control said
printer and returning to said step of periodically transmitting
said response request signal to said printer.
The examiner relies on the following references:
Gase et al. (Gase) 5,580,177 Dec. 03, 1996
Kageyama et al. (Kageyama) 5,625,757 Apr. 29, 1997
(filed Dec. 21, 1994)
Claims 1-17 stand rejected under 35 U.S.C. § 103. As
evidence of obviousness the examiner offers Kageyama in view of
Gase.
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