| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ink composition for lithographic rotary offset printing that does not cause blanket piling resulting in a thin spot or poor deposition of ink in a printing area near a gripper end, while continuous printing for a long period of time, due to gradual deposition of the printing ink on an nonprinting area at a gripper end side of a printing area on a blanket depending on a contact pressure between barrels of a printing machine and then reduction in a printing pressure against a printing sheet on a blanket near an ink deposited spot with a rise, and capable of performing precise printing stably, and being stable on a machine. <P>SOLUTION: This ink composition for lithographic rotary offset printing comprises lanolin of an acid value below 1.0 of 1-5 mass%. The ink composition containing an aliphatic dicarboxylic acid of 1-3 mass% further improves blanket piling. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
