Appeal No. 2000-1502 Page 2
Application No. 08/643,597
presses have been inspected manually. (Spec. at 1.) Manual
inspection, however, is time consuming. (Id.)
In contrast, the appellants’ invention divides printed
image data representing a printed image from a sheet-fed
printing press into inspection areas; the printed image is
inspected in a multiplicity of inspection areas without
overlapping. For each inspection area, printed image data are
compared with nominal image data of a defect-free image. If
the comparison detects a defect, the associated inspection
area is designated as effective. Consequently, the location
of the defect is found rapidly.
Claim 1, which is representative, follows:
1. A device for inspecting a printed image on a
printed sheet in a sheet-fed printing press,
comprising:
a monitor for displaying a multi-colored printed
image;
an image detecting device that furnishes actual
image data of a printed sheet, and a comparison
circuit comparing the actual image data with master
image data from a defect-free master image, dividing
means for performing a preselectable division of the
multi-colored printed image into inspection areas,
and wherein if a defect is detected by the
comparison circuit the associated inspection area is
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007