Browse Prior Art Database

MULTI-IMPACT BACKSTOP FOR PRINT HAMMER

IP.com Disclosure Number: IPCOM000022911D
Original Publication Date: 1976-Apr-30
Included in the Prior Art Database: 2004-Mar-27

Publishing Venue

Xerox Disclosure Journal

Abstract

In an impact printer, a device for dissipating the rebound energy created by the propelling of the hammer 1 against a platen (not shown) includes a ufloatingil backstop 2 which is attached to a stationary stop 4 by means of a spring 5. Each side of the floating backstop 2 is provided with rubber shock absorbers 3. Upon rebounding, the hammer rebound energy is dissipated through two separate collisions; the first between the rearward end of the hammer 1 and the floating backstop 2, the second between the floating back~ stop 2 and the stationary stop 4. This serial collision significantly reduces hammer rebound when compared to a configuration using only a fixed stop. In addition, a powered flight~gap adjustment is provided by threaded bolt 6,