Appeal No. 1999-0427
Application 08/782,272
printing method and apparatus for forming a toner image on a
recording medium. More particularly, the invention uses a
print head which defines an array of microchannels for forming
a plurality of parallel lines of developer in the
microchannels.
Representative claim 1 is reproduced as follows:
1. Electrographic printing apparatus for forming a
toner image on a recording medium, comprising:
a) a magnetic brush having a rotatable magnetic core
and a stationary outer shell;
b) a developer supply for supplying a magnetic
developer powder to the magnetic brush;
c) a print head on the outer shell, the print head
defining an array of microchannels for forming a plurality of
parallel lines of developer in the microchannels, the
microchannels being at least 10 times longer and at least
twice as deep as they are wide and including means for
selectively transferring developer from the lines to a
receiver; and
d) a receiver electrode arranged in spaced relation to
the array of microchannels to define a recording region
through which the receiver can be moved.
The examiner relies on the following references:
Masuda et al. (Masuda) 4,875,060 Oct. 17, 1989
Tange 5,030,974 July 09, 1991
Nakayama et al. (Nakayama) 4-141459 May 14, 1992
(Japanese Kokai)
2
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