Printing – Antismut device – Anti-offset material application
Patent
1975-08-13
1977-01-18
Eickholt, E. H.
Printing
Antismut device
Anti-offset material application
101211, 1014011, 96 30, 35 283, 101 34, G03F 100, B41C 102
Patent
active
040033112
ABSTRACT:
A method of gravure printing which comprises preparing a tone chart having tone scale images with known density values and known gradations between a series of steps between a deep shadow tone density value and a light shadow tone density value, etching a test tone cylinder to reproduce the tone chart and measuring and recording the cell geometry of each tone image on the test cylinder, placing the test cylinder on the press to be used and operating the press with ink and substrate selected for the copy to be reproduced, measuring the tone densities of the printed product samples obtained during the test run and recording this data along with the data on density values of the tone chart and the cell geometry of the test cylinder, determining from this data the tone scale and press operating conditions which will produce theoretically optimum reproduction on the press, preparing specifications, in terms of cell geometry, for engraving of production cylinders and preparing production cylinders according to the cell geometry specifications including incorporating in the production cylinders tone images for shadow, middle and light tones of the selected tone scale so as to provide a tone check point for monitoring the production.
REFERENCES:
patent: 1703449 (1929-02-01), Huebner
patent: 1872943 (1932-08-01), Harvey
patent: 2641853 (1953-06-01), Helding
patent: 2691586 (1954-10-01), Yule et al.
patent: 2891323 (1959-06-01), Eckstein et al.
patent: 3288059 (1966-11-01), Atkinson
patent: 3393618 (1968-07-01), Baker
patent: 3434227 (1969-03-01), Brown, Jr.
patent: 3666479 (1972-05-01), Wiese
patent: 3752072 (1973-08-01), Lorber
Eickholt E. H.
Greenawalt Guy A.
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