Browse Prior Art Database

MULTIPLE TORSION BARS COUNTER-BALANCE CONCEPT

IP.com Disclosure Number: IPCOM000024820D
Original Publication Date: 1982-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 71K

Publishing Venue

Xerox Disclosure Journal

Abstract

Automatic document handlers in xerographic copiers are known in the art. In so called recirculating document handlers (RDHs) a document original is moved away from a stacking tray to a copier platen for imaging. Once an image has been formed, the original is recirculated back to the stacking tray where it is restacked. This recirculation of the document original is performed automatically without the need for operator intervention.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 89% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

MULTIPLE TORSION BARS COUNTER- BALANCE CONCEPT U.S. CI. 35-5/14 Nitin M. Sevak
Cyril K. Bailey

Proposed Classification

Int. C1. G03g 15/00

Automatic document handlers in xerographic copiers are known in the art. In so called recirculating document handlers (RDHs) a document original is moved away from a stacking tray to a copier platen for imaging. Once an image has been formed, the original is recirculated back to the stacking tray where it is restacked. This recirculation of the document original is performed automatically without the need for operator intervention.

The RDH 1 in the present disclosure is pivotally mounted to the copier so that the RDH rotates away from the copier about a pivoting axis 2. This movement facilitates access to the copier platen 3, jam clearance and servicing of the RDH.

The opening and closing of the RDH is facilitated by a counterbalance mechanism 4 which comprises multiple torsion bars in a criss-cross design. In the disclosed

Volume 7 Number 2 March/April 1982 109

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

Page 2 of 2

MULTIPLE TORSION BARS COUNTERBALANCE CONCEPT (Cont'd)

embodiment, two pairs of torsion bars 5, 6 are fabricated using only right angle bends. The two double bars 5, 6 are offset from each other to avoid contact as the RDH is pivoted. The disclosed counterbalance design provides good balance over a wide range of RDH position with the additional advantage that a failure in one of...