Title:
METHOD OF PREVENTING PRINTING PLATE AND WET ROLLER FOR OFFSET PRINTING FROM BEING SOILED WITH OIL
Document Type and Number:
WIPO Patent Application WO/1990/003270
Kind Code:
A1
Abstract:
A method of preventing a non-image portion of a printing plate and the surface of a wet roller in an offset printer from being soiled with an oily material, such as printing ink, by applying ultrasonic waves from the ultrasonic wave generators provided on a plate cylinder roller and the wet roller to the surfaces of the same rollers in motion. According to this method, the deposition of an oily material, such as printing ink on a non-image portion of a printing plate and the surface of the wet roller can be prevented effectively by a very simply constructed apparatus.
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Inventors:
FURUKAWA SHIZUKI (JP)
Application Number:
PCT/JP1989/000915
Publication Date:
April 05, 1990
Filing Date:
September 06, 1989
Export Citation:
Assignee:
TOKYO INKEN CO LTD (JP)
International Classes:
B41F35/00; B41F35/02; (IPC1-7): B41F35/06
Foreign References:
| JPS55132674A | 1980-10-15 | |||
| JPS61118782A | 1986-06-06 | |||
| JPS606977A | 1985-01-14 | |||
| JPS5814989U | 1983-01-29 | |||
| JPS5922447U | 1984-02-10 |
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