To enhance a printing quality by preventing turbidity from being generated in printing ink by a substrate processing agent while subjecting a low white degree printing sheet such as a sheet of news print paper to substrate processing by the substrate processing agent in a printing method by an offset printing machine and an offset printing machine.
Offset printing is executed to the printing sheet by the printing device upon drying the substrate processing agent fed onto a printing face after feeding the substrate processing agent such as low white degree improving agent onto the printing face of the printing sheet, the combination of the substrate processing agent and the printing sheet used in this case is one in which the transferring quantity of the substrate processing agent to the printing sheet in a Bristow tester is reference transferring quantity or more in a contact time corresponding to an objective drying time.
TABUCHI MITSURU
OMAE FUMIKO
NISHIYAMA KOJI
| JPH01294038A | 1989-11-28 | |||
| JPS60109839A | 1985-06-15 | |||
| JP2004306424A | 2004-11-04 | |||
| JPH0577391A | 1993-03-30 | |||
| JP2007326254A | 2007-12-20 |
| WO2006003242A2 | 2006-01-12 |