Xerox Corporation

Kamran U Zaman

Eugene A Swain

Peter J Schmitt

Dante M Pietrantoni

Stanley J Pietrzykowski, Jr

Alan D Smith

Huoy-Jen Yuh

Ronald E Godlove

Karl Edwin Kurz

Robert E McCumiskey

George A Schutt

Amit Trivedi

Stanley Pietrzykowski

Markus Rudolf Silvestri

William G Herbert

Michael Stephen Roetker

John S Chambers

Jonathan H Herko

Alberto Rodriguez

Scott J Griffin

Dennis J Prosser

Jimmy E Kelly

Robert S Foltz

Rachael A Forgit

Timothy J Leenhouts

Christopher P Caporale

John M Scharr

L John Potter

Kenneth Gottschalk

Venita A Jordan

Richard Schichler

Ken Gottschalk

Thomas E Smith

An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.

Orientation-agnostic method to interface to printed memory

A method for ensuring that a memory array such as a ferroelectric memory array is properly electrically connected. The method may be performed, for example, prior to a read or write cycle, during functional testing of the memory array, etc. In one implementation, the memory array is read and the data set including a data bit from each cell is stored in a register. A solid logic 0's pattern is written into the memory array, and each cell is read. If no cell returns a logic 1, it is determined that the memory array is properly connected and the register data values are written to the memory array. If one or more cells returns a logic 1, it is determined that the memory array is improperly connected, the register data values are written to the memory array, and the memory array is removed and reinstalled.

Pad detection through pattern analysis

Orientation-agnostic method to interface to printed memory label

The presently disclosed embodiments are directed to a system and method for obtaining spectra of highly scattering pigmented layers and providing a spectral reflection ratio, which can be correlated to photoreceptor electrical performance. The present embodiments employ the use of dark field microscopy in combination with a noise reducing normalization technique to provide real-time production adjustments to optimize photoreceptor characteristics and/or performance.

System and method for correlating photoreceptor pigmented film layer to electrical performance

A method for detecting specular surface flaws on a coated substrate includes impinging visible non-integrated electromagnetic radiation from a first source onto the coated substrate, reflecting the visible non-integrated electromagnetic radiation off the coated substrate into a first photosensitive device, forming a recorded high frequency surface flaw image, and impinging visible coherent electromagnetic radiation from a second source onto a coated substrate at an oblique angle. The visible non-integrated electromagnetic radiation and the visible coherent electromagnetic radiation on the coated substrate are collocated but not combined on the substrate. The visible coherent electromagnetic radiation is reflected off the coated substrate onto a screen material to form a low frequency surface flaw image. The low frequency surface flaw image is recorded to form a recorded low frequency surface flaw image.

Plural light source and camera to detect surface flaws

A small vibrator is connected to a cleaning blade or cleaning blade holder in an electrostatic marking system. This vibrator in a cycle out step moves the blade up and down and reduces thereby overall contact with the photoconductor surface; this reduces any noise caused by blade contact with the photoconductor surface during cycling out or down of the marking procedure.

Vibration method to reduce and/or eliminate friction/noise

An apparatus and a method for detecting low frequency specular surface flaws on coated substrates is disclosed. A method for detecting low frequency specular surface flaws may comprise: impinging visible electromagnetic radiation or light from an electromagnetic radiation source onto the coated substrate at an oblique angle, reflecting the visible electromagnetic radiation off the coated substrate onto a screen material to form a specular surface flaw reflected image, and recording the reflected image off the screen material with a photosensitive device to form a recorded reflected image.

Specular surface flaw detection

A system for optically sensing manufacturing defects in organic photo conductor (OPC) devices. The system comprising an illumination source for illuminating the OPC device; at least one optical sensor positioned to view the illuminated device; and a controller connectable to the optical sensor, the controller comprising a threshold detector for determining manufacturing defects.

System and method for optically sensing defects in OPC devices

A flange assembly having modular mounting features for receiving and removably securing a component such as a gear thereon. The flange assembly is for use with an imaging member such as a photoreceptor drum.

Modular imaging member flange assembly

An assembling device insures that the proper interference fit is obtained between a flange device and a hollow cylindrical member into which the flange device is inserted. During the insertion of the flange, the hollow cylindrical member is held in place so that it does not move. A displacement sensor monitors the assembly stroke or the distance the flange is inserted and a force sensor is used to measure the assembly force. Threshold values of the displacement and assembly force are set for each flange device and hollow cylindrical member. The flange device displacement and assembly force are communicated to an assembly indicator. A force and/or displacement value above or below the predetermined threshold value will trigger a signal which alerts an operator to improper assembly of the flange device to the hollow cylindrical member.

Apparatus and method for forming an interference fit

A silencer including a hollow tube having, in the free state a predetermined inside diameter, the tube including a tube wall having a substantially uniform thickness, an interior surface, a hard exterior surface at least one groove extending axially of the tube, the groove having a depth that is less than the thickness of the tube wall and a slot in the wall extending axially of the tube, and at least one partially compressed high density polymeric open cell foam plug in the interior of the hollow tube, the plug having in the uncompressed state a substantially circular cross section in at least one plane, the circular cross section of the plug having an outside diameter sufficient to increase the inside diameter of the hollow tube to a diameter at least about 5 percent greater than the predetermined inside diameter of the hollow tube in the free state. The hollow tube portion of the silencer may be recovered from a used hollow photoreceptor drum, combined with a high density polymeric open cell foam plug and installed in a fresh hollow photoreceptor drum.

Recycled silencer

An end flange capable of translating a rotational force from an outside source to a hollow cylindrical member is disclosed. The end flange is made from a composition which includes polycarbonate, polytetrafluorethylene, and glass. The end flange may be used to rotate an electrophotographic imaging member past a charging station, for generation of a uniform electrical potential thereon, and subsequent selective discharging of the imaging member and development of an electrostatic latent image. Most notably, mounting of the end flange to the imaging member does not require the use of an adhesive material. This enables successful recycling of the imaging member, and results in significant cost savings.

Composite photoreceptor flange

A chuck assembly defining a longitudinal axis for internally holding a hollow substrate is disclosed including: (a) a stationary top pressing member; (b) a bottom pressing member movable along the longitudinal axis; (c) an elastic bag defining an opening, a top region, a side wall, and a bottom region, wherein the bag is stretchable along the longitudinal axis and a portion of the top region adjacent the side wall is immobilized against the stationary top pressing member during the stretching of the bag and a portion of the bottom region is coupled to the bottom pressing member; and (d) a width changing apparatus movable along the longitudinal axis, wherein the width changing apparatus is operatively coupled to the bottom pressing member.

Chuck assembly

There is disclosed a carrier system for carrying a substrate batch including:

Substrate carrier system

There is disclosed a chuck assembly defining a longitudinal axis for internally holding a hollow substrate having an open first end and a second end including: (a) an alignment shoulder positioned along the longitudinal axis; (b) an end portion, positioned along the longitudinal axis, that is adapted to be inserted into the substrate through the open first end and comprised of a polymeric member, wherein the polymeric member has a changeable width including a smaller width to permit insertion of the polymeric member into the substrate and a larger width to contact the polymeric member with the substrate inner surface, and the polymeric member is moveable along the longitudinal axis; and (c) a width changing apparatus operatively coupled to the polymeric member, wherein the polymeric member, which is in contact with the substrate inner surface, pulls the substrate a distance along the longitudinal axis towards the alignment shoulder when the polymeric member moves towards the alignment shoulder.

Growing community of inventors

Pittsford, NY, United States of America

Kamran U Zaman