Printing – Inkers – Roller
Patent
1980-04-30
1981-09-22
Fisher, J. Reed
Printing
Inkers
Roller
101363, 101DIG14, B41F 3106, B41F 3112, B41F 3134, B41L 2708
Patent
active
042903637
ABSTRACT:
Ink is supplied to a plate cylinder (9) from an ink transfer cylinder. Two ink metering rollers (10, 13) are associated with the transfer cylinder, and in surface engagement therewith. The nip or engagement gap of the rollers (10, 13) with respect to the transfer cylinder (7) is adjustable. One of the two rollers (10) is supported with an additional positioning arrangement (8, 19, 20) to adjust the gap or nip of that one roller with respect to the other measuring or metering roller (13). The respective measuring or metering rollers are independently driven, such that the surface speed of the first metering roller, which has ink applied thereto, is counter the direction of rotation of the transfer cylinder (7), and the other metering roller is driven at a surface speed which is higher than that of the transfer cylinder but in the same direction of rotation. Ink is applied to the first metering roller (10) by an ink application roller (3) which has ink applied thereto, for example from an ink trough. Preferably, at least one of the rollers or cylinders is cooled and axially oscillating. The resulting film of ink on the transfer cylinder, for application to the plate cylinder (9), will be thin and uniform.
REFERENCES:
patent: 1262709 (1918-04-01), Smith
patent: 2971460 (1961-02-01), Shindle
patent: 3433155 (1969-03-01), Norton
patent: 3467008 (1969-09-01), Domotor
patent: 3986452 (1976-10-01), Dahlgren
patent: 4130057 (1978-12-01), List
Fisher J. Reed
M.A.N.--Roland Druckmaschinen Aktiengesellschaft
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