| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a slip sheet for lithographic printing which is excellent in adhesion, separation property, and aging characteristics, further excellent also in discharge performance, and storage characteristics. <P>SOLUTION: A slip sheet for protecting a lithographic printing plate is characterized in that the coefficient of static friction between surfaces of the slip sheets in contact with an image forming surface of the lithographic plate is not greater than 0.35, the coefficient of static friction between a front surface and a back surface is not greater than 0.32, and the coefficient of dynamic friction between surfaces of the slip sheets in contact with the image forming surface of the lithographic plate is not greater than 0.32, or the coefficient of dynamic friction between the image forming surface of the lithographic plate and the surface of the slip sheet in contact with the image forming surface of the lithographic plate is not greater than 0.27, and yet the surface strength of a side of the slip sheet in contact with the image forming surface of the lithographic printing plate is not less than 15. <P>COPYRIGHT: (C)2009,JPO&INPIT |
