Printing apparatus for offset printing, printing belt and printing roller therefor, and method for the manufacture of such a printing belt and printing roller
US5373788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F17/007
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing apparatus comprises a printing roller (1) provided with a profile which containing (8) raised and lowered (9) parts in circumferential direction, a printing belt (3) provided at one side with a complementary profile, and an opposite roller (2) which together with the printing roller (1) determines a nip through which the printing belt (3) runs, in such a way that its profile side interacts with the printing roller, and its printing side interacts with the impression roller, which printing belt (3) is composed of an interlocked strip of plate material which is flexible as regards bending and is rigid as regards deformations in its plane, on one side of which a profiling of another, for instance rubbe-like, material is provided. Preferably, the profiling is carried out in the form of conical projections (6) distributed at regular intervals over the plate surface in question, and the printing roller (3) is provided with complementary recesses (9) distributed in a corresponding manner over its surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.