Method for mounting and fitting a printing plate on a plate cylinder of an offset printing machine
US5224423A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49552
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
For fitting an offset printing plate on a plate cylinder, both ends of the plate are provided with a bent end portion designed for being hooked onto a wall of a groove formed in the cylinder. The distance along the plate extending between two bending lines of the bent end portions is less than the distance, in the wrap-around direction of the plate on the cylinder, between the two walls of the groove. A first bent end portion is held into the groove, the plate is wrapped around the plate cylinder with a second end portion held proximate to the groove, the plate is subjected to thermal lengthening until the second end portion is aligned with, and can be inserted into, the groove. The end portions are strategically bent to cause a spring locking action when both are thusly inserted into the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.