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Circumferential Bearing Print Band Tracking System

IP.com Disclosure Number: IPCOM000039643D
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Cakerice, LJ: AUTHOR [+3]

Abstract

A print band is tensioned between crowned rotors and is accurately positioned by a circumferential bearing, as shown in the figures. The rotor 1, mounted on an axle 2, includes a crowned surface 1A which presses the print band 3 down onto a circumferential bearing 4. The print band is tensioned between a set of these rotors, and the tensioning or tracking force is determined by the size and location of the crowns and by the geometry of the print band. The print band is accurately tracked on the set of rotors by the crowns of the rotor moving the band axially in one direction A and by the circumferential bearing restraining the band movement to provide registration.

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Circumferential Bearing Print Band Tracking System

A print band is tensioned between crowned rotors and is accurately positioned by a circumferential bearing, as shown in the figures. The rotor 1, mounted on an axle 2, includes a crowned surface 1A which presses the print band 3 down onto a circumferential bearing 4. The print band is tensioned between a set of these rotors, and the tensioning or tracking force is determined by the size and location of the crowns and by the geometry of the print band. The print band is accurately tracked on the set of rotors by the crowns of the rotor moving the band axially in one direction A and by the circumferential bearing restraining the band movement to provide registration. By utilizing the crowned rotor and circumferential bearing, the print band can be located accurately with respect to the print actuators, which eliminates the need for additional registration bearings. There is also a reduction of the tracking stresses on the print band, which reduces deformation on the bottom edge of the band as well as the tendency of the band to buckle, as often occurs when utilizing a registration bearing. The circumferential bearing also is designed so that it is large enough to allow easy insertion of the print band when the rotor is toggled.

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