| 摘要 |
PURPOSE: To provide a coating compsn. comprising a color developer and an extender for preparing a sheet coated with the color developer used for a carbonless paper copying system comprising the sheet coated with the color developer and a sheet coated with micro-capsules contg. a color developing coloring matter soln. CONSTITUTION: A coating compsn. comprising a color developer and an extender for preparing a sheet coated with the color developer used for a carbonless paper copying system comprising the sheet coated with the color developer and a sheet coated with micro-capsules contg. a color developing coloring matter soln. wherein the extender comprises a particulate inorg. material modified by treatment with a treating agent with a non-polar hydrophobic portion (1) comprising at least one hydrocarbon group with a chain length of 8-30C and a polar portion (2) being capable of binding with sites on the surface of the pigment particles, is provided. |
