Printing – Inkers – Roller
Patent
1988-10-24
1990-11-06
Burr, Edgar S.
Printing
Inkers
Roller
101 36, 29132, B41F 146
Patent
active
049676636
ABSTRACT:
An unengraved metering roll made of porous ceramic material is described for depositing measured amounts of liquid as a coating on a substrate such as a metal can. The coating liquid is contained within the pores of the ceramic roll and deposited upon the object or a transfer roll without the use of metering cells which are ordinarily provided by engraving a pattern on the outer surface of the roll. The pores are of a substantially uniform size and are distributed substantially uniformly throughout the ceramic roll. The metering roll of porous ceramic material may be more easily resurfaced merely by grinding in a conventional manner to remove the original outer surface and replacing it with a new outer surface having pores which open to such outer surface for receipt of the coating liquid. The size of the pores and the amount of such pores in the ceramic body are controlled by mixing organic filler particles with the ceramic base material before firing so that such organic particles are burned out during heating of the molded roll body prior to sintering of the ceramic particles to form the porous ceramic roll. In this manner, the size and distribution of the particles can be controlled to match the characteristics of the coating liquid for which the roll is to be used.
REFERENCES:
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Article, "Laser-Engraved Anilox Rolls Offer Accuracy, Uniformity," by C. R. Heurich, published by Pamarco, Inc., of Roselle, N.J.
Article, "Ceramic Foam Offers Surprising Properties," by Jerry Brockmeyer and Joseph F. Pizzirusso, P.E.
Burr Edgar S.
Coors Porcelain Company
Yan Ren
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