System for electrolytical treatment of printing cylinders
US4693792A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D7/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
During electrolytical treatment, a printing cylinder is held between center points, of which one is provided adjustably with a centering sleeve in a tail spindle. A belt connects the tail spindle in force transmitting relationship to a drive. The tail spindle is axially displaceable together with the inner housing of the apparatus, so that an electric contact ring at the end of the tail spindle is engageable with the front surface of a printing cylinder. The current conduction to the contact ring takes place via cooled carbon brushes located between the tail spindle bearings and the contact ring. A current conducting sleeve encompassing the end region of the tail spindle and being contacted by the carbon brushes, prevents the tail spindle carrying the printing cylinder from being exposed to electric current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.