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
Document File: 2 page(s) / 163K

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,

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

MULTI IMPACT
PRINT HAMMER
S. Mitrovich

Proposed Classification

U.S. Cl, 101/93
mt. Cl. B41j

BACKSTOP FOR

6

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,

I

5

Volume 1 Nunther 4 April 1976 21

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Page 2 of 2

22 XEROX DISCLOSURE JOURNAL

Volume 1 Number 4 April 1976

[This page contains 1 picture or other non-text object]