Xerox Corporation

W Bradford Willard

Brian Robert Conrow

Paul Lynn Jacobs

Kimberly Anne Stoll

Richard F Scarlata

Robert W Phelps

David R Stookey

Jose J Soler

Jyothsna Ram

An image forming apparatus includes a sensor that detects a property of a developer material, a transport unit that contacts the developer material and moves the developer material toward a recording medium, and a controller that receives the data regarding the property of the developer material from the sensor unit and sets both a voltage and a velocity of the transport unit, wherein the voltage and the velocity is determined based on data regarding the detected property of the developer material received from the sensor.

Systems and methods for reducing reload image quality defects

The present disclosure provides a method of forming a toner image, comprising: electrically charging a photoreceptor by a charging roller being brought into contact with the photoreceptor, the photoreceptor comprises a photosensitive coating layer on a cylindrical conductive substrate; correcting line width variation using an exposure adjustment calculation (y); and, wherein the exposure adjustment calculation uses a factor based on a ratio (m) of a coefficient of line width variation due to toner age divided by the coefficient of line width variation due to laser power.

Correction of line width variation due to toner age

An image forming apparatus includes a sensor that is configured to detect a property of a developer material, a transport unit that is operatively in contact with the developer material and that is configured to move the developer material toward a recording medium, and a controller that receives the property of the developer material from the sensor unit and sets a voltage of the transport unit, wherein the voltage is determined based on the property of the developer material received from the sensor.

Reducing reload image quality defects

Disclosed are printing methods, apparatus and systems for developing a latent image recorded on a surface, for example, a photoreceptor with developer material. According to an exemplary embodiment, the development method applies a development field voltage between a development station donor member and a development station transport member as a function of a humidity measurement associated with the developer material, the humidity measurement providing a surrogate tribo measurement of the developer material.

Methods, apparatus and systems to control the tribo-electric charge of a toner material associated with a printing development system

Line width of images marked by an image marking device is adjusted by reading a calibration patch marked by the marking device, and then adjusting one or more settings of the marking device, such as exposure intensity or cleaning field intensity, independent of the digital control of the tone reproduction curve so that the line width of subsequently marked images becomes closer to a target value. A digital control may be implemented to compensate for the impact of the modification of the one or more settings on the tone reproduction curve.

Selection of exposure intensity and cleaning field intensity setpoints for optimum line width using sensor reading

An active stack height sensing mechanism that operates through a cam off a disc stacker which performs one cycle per sheet stacked. After a sheet is stacked, a stack height clamp contacts the stack and stops. If the stack height is too low or within a predetermined range, a flag attached to the clamp will block a light beam path between an emitter and receiver and trip the stack height sensor. If the stack height is too high, the stack height sensor will not be made indicating that the stacker should be indexed down.

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Fairport, NY, United States of America

W Bradford Willard