Typewriting machines – Including interposed inking device for record-medium – Ribbon – per se
Patent
1992-08-10
1993-10-12
Eickholt, Eugene H.
Typewriting machines
Including interposed inking device for record-medium
Ribbon, per se
118211, 118216, 118221, 118223, 118224, 118235, 118244, B41J 3109
Patent
active
052519899
ABSTRACT:
An apparatus for producing a multi-colored printing ribbon including a first printing station where one or more spaced transfer heads transfer a first color to selected portions of a web of base colored ribbon stock. A second printing station where one or more spaced transfer heads transfer a second color to said web interleaved with the first color to providing a serial, alternating color pattern. Control devices connected to both printing stations insure that the color segments are deposited in proper serial, spaced locations to prevent the colors from running onto each other. Also disclosed is a method for using such multi-colored ribbons to prevent counterfeiting or theft of various documents wherein at least some of the characters to be printed on such documents are printed in a predetermined sequence of colors.
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