Method and apparatus for use in printing

Details Method and apparatus for use in printing Method and apparatus for use in printing

1990-11-30

1993-05-25

Burr, Edgar S.

Printing

Processes

101366, 101424, 101425, B41M 100

Patent

active

052130444

ABSTRACT:
During a printing operation, an ink pump assembly is driven in a forward direction by a reversible electric motor to pump ink from a source of ink to an inker apparatus. When the printing operation has been almost completed, the direction of operation of the ink pump assembly is reversed to pump reusable ink back to the source of ink. When most of the reusable ink has been pumped back to the source of ink, a valve is actuated to direct the output from the reverse operating ink pump assembly to a waste material receiver. Once the ink has been pumped from the inker apparatus, a valve is actuated to connect the ink pump assembly in fluid communication with a source of clean-up fluid. The clean-up fluid is then pumped from the source to the inker apparatus by forward operation of the ink pump assembly. Once sufficient clean-up fluid has been conducted to the inker apparatus, the ink pump assembly is again connected with the waste material receiver. The ink pump assembly is again operated in the reverse direction to pump clean-up fluid pumped from the inker apparatus to the waste material receiver.

REFERENCES:
patent: 1185668 (1916-06-01), Hoe
patent: 3168872 (1965-02-01), Pinkerton
patent: 3366051 (1968-01-01), Fusco
patent: 3974768 (1976-08-01), Grobman
patent: 4369734 (1983-01-01), Preuss
patent: 4461209 (1984-07-01), Washchynsky et al.
patent: 4680696 (1987-07-01), Ebinuma et al.
patent: 4761120 (1988-08-01), Mayer et al.
patent: 5003877 (1991-04-01), Yano et al.
patent: 5099758 (1992-03-01), Hassler et al.

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