Varnishing unit in the delivery unit of a sheet-fed rotary printing press
US4399767A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1982 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Jun 9, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F23/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for varnishing a sheet being fed from a sheet fed printing press into a delivery unit, the sheet being conveyed by an endless loop conveyor made up of a pair of laterally spaced conveyor chains. Cross members extend between the chains at regular intervals carrying grippers for the leading edge of successive sheets. The chains are guided to form a delivery run and a return run spaced apart and generally parallel to one another. An applicator cylinder is journalled between the runs having an axial length which is shorter than the lateral spacing between the chains. A plate cylinder journalled in the frame outside of the return run is in rolling engagement with the applicator cylinder for supplying a varnish film thereto. A backing cylinder journalled in the frame outside of the delivery run is in rolling engagement with the applicator cylinder. The circumference of the cylinders equals the spacing between successive cross members and grippers. The applicator, plate, and backing cylinders have respective longitudinal grooves sufficiently large to provide free passage for the cross members and associated grippers. The cylinders are driven synchronously with the conveyor ch…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.