Browse Prior Art Database

BTR INTERNAL MECHANISM

IP.com Disclosure Number: IPCOM000023700D
Original Publication Date: 1978-Dec-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 330K

Publishing Venue

Xerox Disclosure Journal

Abstract

A conventional, electrically b sed transfer roll (BTR) such as that used in the Xerox 6500 R color copier has an external cam to operate the copy sheet stripper and gripper fingers. This cam induces forces to the BTR which can cause variations in copy density. The action of the cam can also cause other perturbations in the machine which interfere with or reduce copy quality.

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XEROX DISCLOSURE JOURNAL

BTR INTERNAL MECHANISM
Vaidevutis Draugelis
Joseph Fantuzzo
Rodney Jendrick

Proposed Classification
tJ.S. Cl, 96/1,4
mt. Ci. G03g 13/14

A conventional, electrically b sed transfer roll (BTR) such
as that used in the Xerox 6500 R color copier has an external
cam to operate the copy sheet stripper and gripper fingers.
This cam induces forces to the BTR which can cause variations
in copy density. The action of the cam can also cause other
perturbations in the machine which interfere with or reduce
copy quality.

The disclosed BTR structure eliminates these external forces,
The forces are internal and directed in such a way that they
all resolve through the BTR axis or pivot point 1, thereby not
producing any perturbations that will affect copy quality.

Volume 3 Number 6 November/December 1978 387

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~TR INTERNAL MECHANISM (Cont~d)

The gripper 2 and stripper 3 fingers are both activated by an
internal electric motor or solenoid 4 mounted centrally within
the BTR sleeve 5 between a split axial internal shaft 6. In
this manner, the forces applied to the gripper and stripper
fingers 2 and 3 from motor 4 through cam 7 and cam follower 8
are not external, Therefore, they do not affect the rotary
motion of the BTR, The motor 4 is actuated electronically per
the desired machine timing sequence. This allows for more
control over the respective grip and strip points. It also
allows changing modes (e.g., four co...