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Document Endorse Mechanism Home-Seeking Method

IP.com Disclosure Number: IPCOM000060721D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Hair, VD: AUTHOR

Abstract

To seek home position from an arbitrary initial position, a rotary endorse mechanism segment is stepped in the reverse direction, opposite in rotation to the platen. If the endorse segment contacts the platen before reaching home position, it is kicked back due to the opposing directions of rotation. The kick-back is sensed and the endorse segment rotation is reversed, and it proceeds to home position without passing the platen. This avoids inking the exposed platen with subsequent inking of the face-endorsed documents. The figure shows a schematic representation of a typical endorse mechanism.

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Document Endorse Mechanism Home-Seeking Method

To seek home position from an arbitrary initial position, a rotary endorse mechanism segment is stepped in the reverse direction, opposite in rotation to the platen. If the endorse segment contacts the platen before reaching home position, it is kicked back due to the opposing directions of rotation. The kick- back is sensed and the endorse segment rotation is reversed, and it proceeds to home position without passing the platen. This avoids inking the exposed platen with subsequent inking of the face-endorsed documents. The figure shows a schematic representation of a typical endorse mechanism. It is seen that dual endorse segments 1, normally detented in home position as shown, are rotated 180 degrees in the counterclockwise direction 3 by stepping motor 4 so that inked rubber pads 2, in passing platen 5, endorse the back of each document following path 6 around the platen. When initializing the system, the position of the endorse segment may be unknown so it is arbitrarily directed to seek home position. It is apparent that if home-seeking proceeds in the normal counterclockwise direction, there is a50% probability that the exposed platen will be inked. The present embodiment avoids this possibility by stepping the endorse segment in the clockwise direction 7 to seek home position. The movement of the endorse segment is monitored by optical encoder 8 mounted on the opposite end of the shaft of motor 4. The encoder...