Loading patent…
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYasuharu Suda, Fumiko Omae, Mitsuru Tabuchi, Koji Nishiyama, Masakazu Akatsuka, Fumio Wakisaka
Estimating the term…
The present invention relates to a printing method by an offset printing press and an offset printing press and has an object to carry out a substrate process for low-whiteness printing paper such as paper for newspaper with substrate treatment agent and to enhance the print quality while preventing appearance of muddiness in printing ink by the substrate treatment agent. The present invention is configured such that substrate treatment agent such as low-whiteness enhancement agent is supplied to a printing face of printing paper, and thereafter the substrate treatment agent supplied to the printing face is dried and then offset printing is carried out for the printing paper by a printing apparatus.
A printing method by an offset printing press, comprising the steps of:
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
An offset printing press for carrying out offset printing on printing paper, comprising:
The offset printing press as claimed in claimed 14, wherein the printing paper is low-whiteness printing paper, and
The offset printing press as claimed in claimed 14, wherein the substrate treatment agent is whiteness improvement agent.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.