The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2001
Filed:
Sep. 18, 1998
Keisuke Hirai, Kyoto, JP;
Dainippon Screen Mfg Co., Ltd., Kyoto, JP;
Abstract
A printing apparatus includes a first plate cylinder and a second plate cylinder. Each plate cylinder supports a plate mounted peripherally thereof having two image areas. Four ink feeders contact and feed inks to the image areas on the plate when mounted on the first and second plate cylinders. A first blanket cylinder has a diameter equal to a diameter of the first plate cylinder and is contactable therewith. A second blanket cylinder has a diameter equal to a diameter of the second plate cylinder and is contactable therewith. An impression cylinder having a diameter half the diameter of either the first and second plate cylinders as well as the first and second blanket cylinders, is contactable with the first and second blanket cylinders. A pair of grippers that each hold an end of the printing paper maintain two sheets of printing paper peripherally of the impression cylinder. A paper feed cylinder feeds the printing paper to the impression cylinder. A paper discharge cylinder discharges the printing paper from the impression cylinder after a required printing process. A gripper control mechanism controls the grippers to selectively carry out either one of a first opening and closing operation once for every rotation of the impression cylinder and a second opening and closing operation once for every two rotations of the impression cylinder.