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Rhomboidal Paddle Design for Printer Lever Arm

IP.com Disclosure Number: IPCOM000041053D
Original Publication Date: 1987-Jun-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Reynolds, S: AUTHOR [+2]

Abstract

A rhomboidal print hammer paddle design 1 for a printer lever armature 2 is shown in the Figure. The print hammer paddle 1 as shown is attached to one end of a print lever arm 2 that pivots at rocker pin 3. The paddle moves the print head wire 4 when the lever armature is activated, for example, by a solenoid 5 or the like.

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Rhomboidal Paddle Design for Printer Lever Arm

A rhomboidal print hammer paddle design 1 for a printer lever armature 2 is shown in the Figure. The print hammer paddle 1 as shown is attached to one end of a print lever arm 2 that pivots at rocker pin 3. The paddle moves the print head wire 4 when the lever armature is activated, for example, by a solenoid 5 or the like.

The rhomboidal shape provides a more even distribution of the stress arising when the paddle strikes the print head wire, and reduces the mass and the mount of inertia of the armature and paddle assembly. The optimum internal angle A of the rhomboid has been found to be about 50o to 60o with 53o being preferred. A paddle with this shape should last longer and respond faster than conventional paddle designs.

Disclosed anonymously.

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