| 摘要 |
PURPOSE:To obtain excellent desensitizing effect with ink using amount of small desensitizing ink to be printed on the developer coating surface (coloring surface) of a medium and lower sheet of no-carbon(NCR) pressure sensitive copying sheet by containing specific compound as a desensitizer. CONSTITUTION:Desensitizer compound uses a compound represented by a formula I (where R1 is 1-18C alkyl group or alkenyl group, R2 is 1-17C, and n is integer numbers of 5 to 25) together with pigment, binder, other solvent, additive, etc., as ink. Thus, since it has excellent desensitizing effect, its ink using amount may be less. It has rapid ink drying property, and even if ink usage is excessive, a migration phenomenon is eliminated to accelerate the speed of a printing press. |
