Appeal No. 96-3950
Application No. 08/131,056
The claimed invention relates to a printing system having
a host computer in communication with a printer controller
which is coupled to a print engine for producing a printed
page. More particularly, Appellants disclose, at page 7 of
the specification, a normal mode of operation in which page
data sent from the host is rasterized by the printer
controller and sent to the print engine for printing. On
receipt of an initialization command from the host, the
printing system enters an image mode as disclosed at pages 8
and 9 of the specification. Appellants further disclose that,
in this image mode of operation, the host computer performs
substantially the same rasterization process that is performed
by the printer controller in the normal mode of operation as
illustrated in the flow chart of Figure 3. This rasterization
process produces page data in the form required for direct
serialization to the print engine (specification, page 7).
Representative claim 1 is reproduced as follows:
1. A printing system comprising (a) a host computer including
(i) means for rasterizing a page to be printed to produce page
data in a form that it can be directly serialized by a printer
coupled to the host computer, (ii) means for sending image
initialization commands to a printer coupled to the host
computer, and (iii) means for sending page data in said form
to a printer coupled to the host computer after the image
2
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