Abstract Heat activated duplicating process involving the steps of forming a coating on localized areas of a master sheet by transfer thereto from a transfer sheet, the coating being in the form of a discontinuous layer containing light colored normally stably solid, vaporizable first reactive material together with a particulate material and a minor amount of binder, placing the master sheet against a first receptor copy sheet which contains a second reactant material which coreacts with said first reactant to form a visible image, and subjecting the combined sheets to heat to vapor transfer a portion of the first reactant material, whereby an image is formed on the copy sheet, and repeating the heating step with additional receptor copy sheets to form additional copies.
The process according to claim 1 wherein said first reactant material is selected from dithiooxamide and N,N''-di-substituted derivatives thereof and said second reactive material is selected from the stearates, rosinates, and oleates of nickel or copper.
Claim 2
Dependent Claim
12 words
The process according to claim 1 wherein said layer contains tributyl phosphate.
Claim 3
Dependent Claim
16 words
A process according to claim 1 wherein said particulate material of said layer comprises a wax.
Claim 4
Dependent Claim
18 words
A process according to claim 1 wherein said transfer layer contains a minor amount of a film-forming binder.
Claim 5
Dependent Claim
64 words
A process according to claim 1 wherein said layer contains tributyl phosphate and a wax, said first reactant material is selected from dithiooxamide and the N,N''-di-substituted derivatives thereof, said master sheet is an open bond sheet, and said transfer sheet is a glassine-type paper, and said layer of said transfer sheet comprises at least about 15 percent by weight of said first reactant material.