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Maintaining a Constant Belt Speed in Type Belt Printers

IP.com Disclosure Number: IPCOM000048370D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Fischer, L: AUTHOR [+2]

Abstract

The speed of motor-driven type belts changes whenever several print hammers are simultaneously printing.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Maintaining a Constant Belt Speed in Type Belt Printers

The speed of motor-driven type belts changes whenever several print hammers are simultaneously printing.

To compensate for such speed changes, the sum of the energizing currents of the hammers to be simultaneously fired is measured and the motor torque is increased so that there is no speed change of the type belt when these hammers are impacted.

It is also possible to determine the number of hammers to be simultaneously fired and to correspondingly increase the motor torque in advance. (With the latter solution, the hammer currents do not have to be measured).

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