Marking apparatus with detection of excessive marking pressure

Details Marking apparatus with detection of excessive marking pressure Marking apparatus with detection of excessive marking pressure

1993-05-04

1996-04-02

Fisher, J. Reed

Printing

Bed-and-platen machines

Web

101484, 101486, B41F 138, B41F 166

Patent

active

055030700

ABSTRACT:
A printing apparatus employs a rotatable cam having an enclosed cam slot for controlling the rocking motion of an inking roll without the need for a cam follower spring. The apparatus also includes an articulated printing member support assembly which executes a complex curvilinear movement under the control of a fixed cam slot without the use of linear bearings. Complementary cam profiles are used on both cam surfaces in order to maintain tangency between the inking roll and printing element during inking. A yieldable connecting link is used to prevent excessive printing pressures from being applied, and a movable filler plate closes off a slot in a front cover of the printing apparatus through which a portion of the movable printing member protrudes.

REFERENCES:
patent: 3101666 (1963-08-01), Sawtelle
patent: 3946663 (1976-03-01), Engeriser
patent: 4163421 (1979-08-01), Charan
patent: 4347788 (1982-09-01), Dufour et al.
patent: 4387645 (1983-06-01), Holland-Letz et al.
patent: 4444108 (1984-04-01), Jenness, III
patent: 4596183 (1986-06-01), Steiner et al.
patent: 4847638 (1989-07-01), Moriyama
patent: 4881835 (1989-11-01), Niikawa
patent: 5146851 (1992-09-01), Anderson et al.
patent: 5201589 (1993-04-01), Chun et al.
Patent Abstracts of Japan, Section M, Section No. 814, vol. 13, No. 154, p. 49 (Apr. 14, 1989).
EDM Model HR-20 Operating Manual (not dated).
Markem Model 146A Machine Manual Dated May 1967.
Markem Model 300T Machine Manual Dated Nov. 1976.
Markem Model 4-1228 Machine Manual Dated Dec. 1977.
Markem Model U-1251M Operating Instructions (not dated).

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