Printing machine registration target

Details Printing machine registration target Printing machine registration target

1979-07-23

1981-06-16

Fisher, J. Reed

Printing

Multicolor

Processes

101181, B41F 506

Patent

active

042730457

ABSTRACT:
A registration target for printing on a web or sheet includes a pair of juxtaposed orthogonal arms, at least one of which extends lengthwise along the web. One or more tabs projects perpendicularly from each arm but only at one edge thereof. The widths of the arms and tabs substantially correspond to the stroke width of the lines and characters being printed on the web and the length of each tab is a multiple of that stroke width. By observing the orientations of the tabs and the amounts by which they project beyond one another of the targets printed by a series of print cylinders in a press, one can immediately discern the directions and amounts in terms of stroke width of any registration errors.

REFERENCES:
patent: 1151461 (1915-08-01), Hatt
patent: 3015266 (1962-01-01), Anderson et al.
patent: 3701464 (1972-10-01), Crum
patent: 4033259 (1977-07-01), Schuhmann

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