Xerox Corporation

Steven Robert LeRoy

Palghat Srinivas Ramesh

Mark A Scheuer

Michael D Thompson

Steven C Hart

Ajay Kumar

James Michael Chappell

Patrick Jun Howe

Mark Petrush

Fei Xiao

Paul W Morehouse

A tool used in the TC measurement in the field includes a venturi shaped container that when connected to vacuum pressure from a portable vacuum cleaner takes advantage of cyclone separator functionality to assist in separation of fine toner from carrier beads with the toner being caught in the vacuum cleaner and the carrier beads being caught by a plurality of screens covering an opening in the bottom of the container.

Toner concentration field measurement tool

A development subsystem is used to develop developer having semiconductive carrier particles and toner particles. The development subsystem includes a developer housing, for retaining a quantity of developer having semiconductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the first magnetic roll, a second magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the second magnetic roll, and a motor coupled to the first and the second magnetic rolls to drive the rotating sleeves of the first and the second magnetic rolls in a direction that is against the direction of a photoreceptor that rotates in proximity to the first and the second magnetic rolls. The first and the second magnetic rolls carry semiconductive carrier particles and toner particles through a development zone formed by the first and the second magnetic rolls.

Xerographic developer unit having multiple magnetic brush rolls rotating against the photoreceptor

This is a fuser roll having a driver slot having a large rounded upper portion to reduce cracking caused by drive load stresses. Around the slot is a reinforcing driver yoke to add additional resistance to cracking. Two reinforcing lugs can be used in place of the driver yoke.

Fuser roller with improved crack resistance

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Hilton, NY, United States of America

Steven Robert LeRoy