Appeal No. 2001-1210 Page 12
Application No. 09/255,990
Claim 6 reads as follows:
A method for two-sided printing of a sheet of printing material having a
front side and a rear side, in a sheet-fed rotary printing press, which comprises:
the following method steps performed in the following order:
cleaning a front side of the sheet,
printing on a front side of the sheet,
cleaning a rear side of the sheet, and
printing on the rear side of the sheet.
In the rejection of claim 6, and claims 7 and 8 dependent thereon, the examiner
ascertained (final rejection, pp. 3-4) that Wirz, in column 3, teaches "cleaning one side,
printing that side, turning the paper over, cleaning the second side, and then printing
the second side." The examiner then determined it would have been obvious to one of
ordinary skill in the art to have further modified the method of Wood to have arrived at
the subject matter of claim 6.
The appellants argue (brief, p. 2) that the examiner's characterization of the
teachings of Wirz is in error since only the upper side of the sheet is cleaned. We
agree. Wirz teaches (column 3, lines 1-12) that
It is advantageous to use the work and tumble or sheet reversing device
when printing cardboard sheet having surfaces which have to be cleaned or
subjected to some other finishing treatment such as, e.g., numbering, embossing
or the like, before printing. For this purpose, the sheet being fed by the feeder
with its upper side facing upwardly is subjected initially to such a finishing
treatment, is then turned over by the work and tumble device on the turning
device thereof and is perfector-printed on the underside thereof and, after the
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