Appeal No. 2001-1210 Page 9
Application No. 09/255,990
initially cleaning a front side of a sheet with a first cleaning device, and
thereafter cleaning a rear side of the sheet with a second cleaning device
disposed downline of the first cleaning device in a sheet transport direction; and
subsequently printing on the sheet.
Takeuchi's invention relates to a paper surface cleaning device for removing fine
paper dusts, etc., from the surface of a printing paper. As shown in Figure 1, a paper
surface cleaning device is provided between a roll paper supply portion of a printing
machine for printing a rolled paper and a printing portion thereof, and supported by left
and right fixed frames 1 (one of them is shown in Figure 1) which are provided over left
and right frames (not shown) of the printing machine. Two guide rollers 2a, 2b are
bridged between the left and right fixed frames 1 parallel with various rollers of the
printing machine so as to contact the opposite surfaces of a printing paper 3,
respectively. The guide rollers 2a, 2b are disposed separately in the vertical direction to
form a vertical running path of the printing paper. The printing paper 3 runs at a speed
of 20 to 600 meters per minute in the direction indicated by arrows to be printed at the
printing portion of the printing machine. Two cleaning units U1, U2 are provided on the
fixed frames 1. The cleaning unit U1 is provided on one side of the printing paper 3,
and the cleaning unit U2 is provided on the other side of the printing paper 3.
In the rejection of claim 5 before us in this appeal, the examiner applied Wood
and Grindley as in claim 1 above and further determined (final rejection, p. 4) that
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