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Dynamic Balance for Process Drum

IP.com Disclosure Number: IPCOM000084686D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Ritts, HM: AUTHOR

Abstract

A dynamic balancing system is shown that is capable of keeping a process drum closely balanced as a roll of a recording member is transferred from a supply roll to a take-up roll.

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Dynamic Balance for Process Drum

A dynamic balancing system is shown that is capable of keeping a process drum closely balanced as a roll of a recording member is transferred from a supply roll to a take-up roll.

The recording member is taken from a supply roll 10 through a slot and around the outer peripheral surface of process drum 12 and back through the slot to a take-up roll 14. A static balance is performed with all process drum components installed, except for the rolls of recording materials and the weights to be added to compensate for the imbalance caused by the transfer of the recording material from the supply roll 10 to the take-up roll 14. The static balancing operation reduces the process drum imbalance to zero for any point in its rotation.

To provide dynamic balance, two weights 16, 18, are added to the process drum assembly. One weight 16 is added to the left of the drum Y axis and on the X axis. This weight is stationary. The second weight 18 is attached to the end of an L-shaped ladder 20. The ladder is mounted to pivot about point 22 and is retained in position by a linear spring 24. The shorter end of the ladder 20 contains a follower 26 which because of spring 24 rides against the take-up spool
14.

As the record member is advanced onto the take-up spool 14, the diameter of roll 14 increases so that ladder follower 26 is pushed down, causing the ladder to pivot on its axis 22 and shift weight 18 to the left against the force of spring 24. As...