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US 5,288,687 AGranted
Carbonless copying paper
AssigneeMitsubishi Paper Mills Limited
InventorsYoshihide Murakami, Shingo Tachizawa, Takeo Sugiyama
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AssigneeMitsubishi Paper Mills Limited
InventorsYoshihide Murakami, Shingo Tachizawa, Takeo Sugiyama
Estimating the term…
The present invention is characterized by using an ampholytic latex as binder in a carbonless copying paper prepared by coating on a support a coating composition comprising a stilt agent, a binder and anionic microcapsules containing a color former and drying the composition. The present invention is further characterized by using an association forming polymer in a coating composition in a carbonless copying paper prepared by coating on a support a coating composition containing a stilt agent, a binder mainly composed of a latex and microcapsules containing a color former and drying the coating composition. The present invention is further characterized by using an association forming polymer in a coating composition without using a stilt agent in a carbonless pressure-sensitive copying paper prepared by coating a coating composition comprising a latex and microcapsules containing a color former and drying the composition.
A carbonless copying paper which comprises a support and a coated layer thereon formed by coating a coating composition comprising a stilt agent, a binder and anionic microcapsules containing a color former therein and drying the composition, wherein the binder comprises anamphoteric latex.
Dependencies are inferred from the claim text.