Image analysis – Applications – Manufacturing or product inspection
Patent
1993-12-30
1995-06-06
Couso, Jose L.
Image analysis
Applications
Manufacturing or product inspection
358299, 1014011, 356378, B41C 100
Patent
active
054229588
ABSTRACT:
A system for calibrating engraving heads used for engraving gravure printing cylinders determines a mean cell volume for cells forme din a test cut in a printing cylinder. The system of the present invention includes a procedure of cutting two or more test cuts in each printing cylinder. One of the test cuts is at the light end of the cylinder and the second is at he dark end. The morphological characteristics of a plurality of cells in each of the test cuts is measured, and morphological parameter values of the cell sin the test cut are computed. These morphological parameter values are compared with predetermined morphological parameter values, and each engraving head is adjusted in accordance with this comparison to cut the desired values within an acceptable tolerance band. The desired average values can be adjusted to take into account new inks, papers, batch variation in inks and papers, and diamond wear in the engraving head.
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Bender Gerald J.
Ewalt Richard R.
Procknow Gary
Wouch Gerald
Bella Matthew C.
Couso Jose L.
R. R. Donnelley & Sons Company
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