Pressure-sensitive copying paper
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United States of America Patent
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Jan 28, 1992
Grant Date -
N/A
app pub date -
Jun 30, 1989
filing date -
Jul 1, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Pressure-sensitive copying paper of particular suitability 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 color developer material; and (b) microcapsules containing a substantially colorless chromogenic material; and is characterized in that it has: (i) a mean Bendsten roughness on its top side up to 880 ml.min.sup.-1 ; (ii) a mean Bendsten porosity of up to about 200 ml.min.sup.-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.
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