Browse Prior Art Database

Rotary Gate for Fabric Ribbon Stuffer Box Chamber

IP.com Disclosure Number: IPCOM000052483D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Goff, W: AUTHOR

Abstract

The present structure provides an expedient for fabric ribbon stuffer box chambers which reduces the probability of a ribbon jam at the storage chamber exit point. One of the key problem areas of the art is gating the ribbon from the storage chamber into a desired return path to the print point without the exiting ribbon causing folds of ribbon in the chamber to jam the gate point, thereby increasing ribbon tension to the point of functional failure.

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Rotary Gate for Fabric Ribbon Stuffer Box Chamber

The present structure provides an expedient for fabric ribbon stuffer box chambers which reduces the probability of a ribbon jam at the storage chamber exit point. One of the key problem areas of the art is gating the ribbon from the storage chamber into a desired return path to the print point without the exiting ribbon causing folds of ribbon in the chamber to jam the gate point, thereby increasing ribbon tension to the point of functional failure.

With reference to the figure, a ribbon cartridge or box is shown wherein the ribbon storage chamber is separated from the exit path portion 10 of this construction by a fixed wall 11, the wall having a space for the gate means to allow the ribbon to go through. Portion 10 has whatever features are required for the total function and also a gate pivot pin and a gate stop-ribbon guide pin 12 which cooperate with a rotary gate to provide a pivot point for the rotary gate and limit its rotary motion relative to wall 11; the ribbon motion into and out of the structure is shown by the arrows.

The rotary gate has a radius portion matching the curvature in wall 11, with the face of the gate having a curved slot 13, said slot having a width slightly more than the ribbon caliper. The ribbon 14 exits the storage chamber through slot 13 around pin 12 to exit the cartridge or box, as shown. It should be noted that the rotary gate pin may be located underneath the rotary gate if th...