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VACUUM ACTUATED PAGE EDGE GRIPPER

IP.com Disclosure Number: IPCOM000027682D
Original Publication Date: 1998-Oct-31
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 76K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an ultra thin page-edge gripper designed for use where thickness requirements are critical. For Thermal Ink Jet (TU) there is a desire to hold a page that is to be printed f d y against a given location on a platen. Where vacuum and electrostatic hold-downs are not appropriate, simple mechanical gripping of the page edges can be advantageous. If the various pages to be gripped are of different lengths, the gripping means must be constructed to allow repositioning on the platen. However, since the print heads must travel over the gripper during the printing operation, and the print head to printing media gap must be small, the gripping mechanism must be exceedingly thin. In addition, the gripping force must be substantial and uniform over the length of the gripper. These requirements are nearly impossible to achieve through the use of normal mechanical grippers.

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XEROX DISCLOSURE JOURNAL

VACUUM ACTUATED PAGE EDGE GRIPPER
Lesley P. Dudek

Proposed Classification
U. S. CL 347/104 Int. C1. B41j 02/01

'

72 '

16

Disclosed is an ultra thin page-edge gripper designed for use where thickness requirements are critical. For Thermal Ink Jet (TU) there is a desire to hold a page that is to be printed fdy against a given location on a platen. Where vacuum and electrostatic hold-downs are not appropriate, simple mechanical gripping of the page edges can be advantageous. If the various pages to be gripped are of different lengths, the gripping means must be constructed to allow repositioning on the platen. However, since the print heads must travel over the gripper during the printing operation, and the print head to printing media gap must be small, the gripping mechanism must be exceedingly thin. In addition, the gripping force must be substantial and uniform over the length of the gripper. These requirements are nearly impossible to achieve through the use of normal mechanical grippers.

XEROX DISCLOSURE JOURNAL - Vol. 23, No. 5 September/October 1998 223

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VACUUM ACTUATED PAGE EDGE GRIPPER (CONT'D)

The figure shows a cross-sectional view of a vacuum actuated gripper 10 that holds a sheet 20. The gripper 10 consists of two thin plates 12 held together at one end by a hinge 16 and with a single-fold accordion-like sealing member 18 part way to the other end. This forms a...