B - Operations – Transporting – 41 – L
Patent
B - Operations, Transporting
41
L
42/16
B41L 1/36 (2006.01) B41M 5/132 (2006.01)
Patent
CA 1153888
ABSTRACT OF THE DISCLOSURE A recording material sheet to be written or printed upon, which is coated with a chromogenous color component which, under pressure, produces a coloring reaction in conjunction with a second reagent which contains a color developer. The color component is provided in the form of micro-coagulated, flaky particles in a finely distributed manner upon the recording sheet, accompanied by the use of a binder. Also disclosed is a method of producing a coating mass, containing a chromogenous color component, for application upon a recording material. The chromogenous color component is converted into a dispersion-like form by dissolving or melting into saponifiable chemicals and subsequently emulsifying in water. According to another embodiment for producing a coating mass containing a chromogenous color component for application upon recording material, the color component is converted into a water soluble form by chemical reaction, for example by adding organic acids, whereafter the chemically reacted color component is dissolved in water. By adding alkali, the acid is neutralized again in such a manner that the color component precipitates finely and in a flaky form; thereafter, binders, such as starch or synthetic material dispersion are added.
355220
Drescher Datendrucke G.m.b.h.
Fetherstonhaugh & Co.
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