Shock absorber cushion and method of use
US6666138B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 18, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jun 18, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41N6/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sheet of elastomeric material that serves as a shock absorber and cushion for use between a printing plate, such as but not limited to a flexographic printing plate, and a printing cylinder during printing for compensating for variations in thickness, height and centricity of the printing cylinder and printing plate to prevent distortions in the image being printed that includes providing an elastomeric material having a longitudinal direction in the direction of circumferential travel of the cylinder circumference that includes a plurality or array of protrusions formed of the elastomeric material of predetermined cross-sectional shape and area and the material having a durometer to cushion the printing plate in such a way to provide the necessary compensation to ensure a high quality printed image at high speed. The cross-sectional shapes and the array of the longitudinal protrusions provide for the material's lateral displacement zones that allows the elastomeric material to be displaced and return relatively instantaneously to its original height or near original height to obtain and maintain high quality printing, thereby compensating for tolerance errors between the drum si…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.