Combined sheet-fed rotary printing machine for securities, especially banknotes
US5042378A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Jul 11, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/49
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The printing machine is composed of an indirectly printing printing unit (A), and a sheet transport device (B), composed solely of drums (18, 19, 20, 22, 23, 24), and of a following intaglio printing unit (C). The indirectly printing printing unit (A) has two interacting blanket cylinders (3, 5), each of which is inked with several colors by several plate cylinders (12, 15; 7, 10). The sheets are passed onto one of the blanket cylinders (3) from a carry-over drum (2) and, after passing through the nip between two blanket cylinders (3, 5), thereby being printed on both sides, are taken over by a transfer drum (18) of the sheet transport device. The circumferential region which is located between the carry-over drum (2) and transfer drum (8) and over which the sheet passes extends over at most 180.degree., preferably less than 150.degree., so that that free circumferential region of this blanket cylinder not covered by the sheet is available for accommodating several plate cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.