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ROLL TYPE INVERTER WITH INDE-PENDENTLY DRIVEN DUPLEX ROLL

IP.com Disclosure Number: IPCOM000025343D
Original Publication Date: 1984-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 145K

Publishing Venue

Xerox Disclosure Journal

Abstract

A roll type inverter system 10 with an independently driven duplex pinch roll device 12 is depicted in the figure. This inverter comprises a reversibly driven inverter roll 14 and an escort belt 16 which forms an endless belt around guide rollers 11, 13, 15, and 17. The escort belt is in driving contact around almost half of the inverter roll to form an elongated nip through which a document 18 may be passed. The duplex roll device comprises a drive roll 19 and pinch roll 21 which rolls do not reverse the direction of rotation during the duplex mode.

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XEROX DISCLOSURE JOURNAL

ROLL TYPE INVERTER WITH INDE- PENDENTLY DRIVEN DUPLEX ROLL Nitin M. Sevak

Proposed Classification
U.S. C1. 355/24 Int. C1. G03b 27/32

Volume 9 Number 5 September/October 1984 335

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

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ROLL TYPE INVERTER WITH INDEPENDENTLY DRIVEN DUPLEX ROLL (Cont'd)

A roll type inverter system 10 with an independently driven duplex pinch roll device 12 is depicted in the figure. This inverter comprises a reversibly driven inverter roll 14 and an escort belt 16 which forms an endless belt around guide rollers 11, 13, 15, and 17. The escort belt is in driving contact around almost half of the inverter roll to form an elongated nip through which a document 18 may be passed. The duplex roll device comprises a drive roll 19 and pinch roll 21 which rolls do not reverse the direction of rotation during the duplex mode.

A driven platen belt 23 is mounted in contact with the platen 25 to advance the document after scanning therefrom. As the document 18 leaves the platen, it may take one of three paths, the simplex path is taken by the document when the upper half 22 of the lower decision gate (LDG) 20 is rotated counterclockwise and the lower half 24 of the lower decision gate (LDG) 20 is rotated in the clockwise direction. The duplex path is taken by the document when both the upper half and the lower half of the LDG are rotated in the clockwise direction, and the semi- automatic document handling (SADH) output path is taken by the document when the upper half and lower half are rotated in the counterclockwise direction.

When a simplex copy of the document is desired, the document is moved from the platen by platen belt 23, after scanning, along a substantially horizontal path between guide plates 39. As the document continues along the horizontal path, it enters the nip formed by the escort belt 16 and the inverter roll 14. Stripper finger 26 is located above the inverter roll and near the exit point of the nip. Its tip 27 is depressed into riding contact with the inverter roll 14 to strip the document as it moves in the clockwise direction through the elongated nip. Once stripped from the inverter roll by the stripper finger 26, the document enters the outgoing document guide member 28 and into an outgoing pair of drive rolls 29, 30. Before the trail edge of the document leaves the nip its leading edge is gripped by the drive roll pair 29, 30 so that positive drive control of the document is maintained during its passage through the inverter 10.

When a duplex...