Pump inker unit

Details Pump inker unit Pump inker unit

2001-05-30

2002-12-31

Colilla, Daniel J. (Department: 2854)

Printing

Inkers

Fountains

C101S349100

Reexamination Certificate

active

06499399

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a pump inking unit. The pump inking unit includes a movable ink supply unit which is movable and has at least two ink pumps.
DESCRIPTION OF THE PRIOR ART
An inking unit for a multi-color rotary printing press is known from Swiss Patent 392 565. For dispensing ink into the inlet wedge between two distributing rollers, ink nozzles are respectively charged by a plurality of pumps from an ink reservoir which has the width of a printing plate and which is located in the interior of the press.
DE 42 42 493 A1 describes a refilling station for filling a multi-path reservoir.
Swiss patent 532 429 discloses an inking unit with a nozzle for applying ink to a roller. The nozzle is connected with a reservoir which can be charged with compressed air.
SUMMARY OF THE INVENTION
The object of the present invention is directed to creating a pump inking unit.
In accordance with the present invention, this object is attained by providing a pump inking unit that includes an ink supply strip which can be placed against an ink roller. This ink supply strip is connected to at least two ink pumps. A movable ink supply unit with at least one ink reservoir is connected to the ink pumps. Ink in the ink reservoir is pressurized by a gaseous medium.
The advantages which can be achieved by the present invention primarily lie in that a rapid change of the printing ink color is possible without it being necessary to remove residue of the ink used up to that time, or to use it up by printing. The generation of waste printed material is reduced.


REFERENCES:
patent: 4033258 (1977-07-01), Farrow
patent: 4792292 (1988-12-01), Gaenzle
patent: 5168807 (1992-12-01), Elia et al.
patent: 5189956 (1993-03-01), Reder et al.
patent: 5367982 (1994-11-01), DeMoore et al.
patent: 5386773 (1995-02-01), Flade
patent: 392 565 (1965-10-01), None
patent: 532 429 (1973-02-01), None
patent: 1 853 635 (1962-06-01), None
patent: 1 225 203 (1966-09-01), None
patent: 2 301 503 (1973-07-01), None
patent: 2 333 279 (1974-10-01), None
patent: 41 17 389 (1992-03-01), None
patent: 42 41 809 (1994-06-01), None
patent: 42 42 493 (1994-06-01), None
patent: 197 21 235 (1998-03-01), None
patent: 05042666 (1993-02-01), None
patent: WO 98/42511 (1998-10-01), None
Patent Abstracts of Japan JP 1-316271; Seiji Mitsui; Ink Supply Apparatus; vol. 14/No. 119; Mar. 1990.

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