Browse Prior Art Database

Improved Mechanical Homing for Stepper Motor Driven Printer Systems

IP.com Disclosure Number: IPCOM000051130D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Fitch, DG Mahlbacher, PA Mayo, RD [+details]

Abstract

In a stepper motor driver such as disclosed in U.S. Patent 3,750,000, different current levels may be selected under logic control. By changing these logic inputs at the same time the motor is stepped, a sequence of steps at each current level may be generated. Since the torque of the motor is directly proportional to the current level, this will generate a series of steps at varying motor torque levels.