Machine for printing on cylindrical or frusto-conical containers with ultra-violet-light-setting ink
US3934500A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Dec 13, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F23/005
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A machine for printing on containers in ultra-violet-light-setting ink has a turret fitted with rotatable mandrels for supporting the containers, the axes of the mandrels being radial relative to the axis of the turret, indexing mechanism for intermittently turning the turret to register each mandrel in succession with printing cylinders spaced around the turret, and gear unit for rotating the mandrels and printing cylinders in synchronism. The turret has a cylindrical rim with flat annular upper and lower surfaces, and each mandrel is mounted in a recess in the rim with the recess opening through the lower surface to permit engagement with the printing cylinders and opening through the periphery of the rim to enable containers to be mounted on the mandrels. Ultra-violet light sources are arranged to direct light into the recesses to set ink printed on containers on the mandrels, and the light sources are provided with shrouds which co-operate with the rim to prevent escape of the ultra violet light except into a recess. The light sources may be fixed in which case the shrouds are spaced close to the surfaces of the rim. Alternatively, the light sources and shrouds may be fixed on …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.