Pressure-sensitive copying paper.

摘要

Pressure-sensitive copying paper of particular suitabilty for the production of business forms sets by xerographic photocopying processes (including laser printing processes) carries, as loadings within the thickness of the paper:- (a) inorganic colour developer material; and (b) microcapsules containing a substantially colourless chromogenic material; and is characterized in that it has:- (i) a mean Bendsten roughness on its top side up to 880 ml.min<-><1>; (ii) a mean Bendsten porosity of up to about 200 ml.min<-><1>; and (iii) an ex-mill moisture content of not more than about 5.5%, based on the total weight of the paper. The use of paper as defined above minimises jamming and other problems commonly encountered when attempting to produce business forms sets from pressure-sensitive copying papers by xerographic photocopying processes.