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Print Belt Damper

IP.com Disclosure Number: IPCOM000048697D
Original Publication Date: 1982-Mar-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Hendriks, F: AUTHOR

Abstract

A vibration suppression device for suppressing out of plane vibrations of a print belt in a printer is described. The suppression device has a chamber with a perforated wall through which high pressure air is forced out and directed to the moving print belt; the moving print belt is attracted by means of the Bernoulli effect to the chamber and separated from the chamber by a thin air film whereby the vibration of the moving print belt is dampened by the thin air film.

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Print Belt Damper

A vibration suppression device for suppressing out of plane vibrations of a print belt in a printer is described. The suppression device has a chamber with a perforated wall through which high pressure air is forced out and directed to the moving print belt; the moving print belt is attracted by means of the Bernoulli effect to the chamber and separated from the chamber by a thin air film whereby the vibration of the moving print belt is dampened by the thin air film.

Referring to Figs. 1 and 2, two thin plenum chambers 1 and 2 are mounted adjacent to a print belt 3. The chambers 1 and 2 each has a perforated wall (Fig.
2). Air at a pressure of about 15 PSI is forced through the holes 4 such that the print belt 3 is attracted to the chambers 1 and 2 by means of the Bernoulli effect until there is a thin air film left. Such air films offer excellent damping characteristics. At the same time, the print belt 3 is protected from wear, and the torque on the belt motor (not shown) can be reduced.

An alternate implementation for a back printer is the use of a perforated platen.

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