Palo Alto Research Center Inc.

Xerox Corporation

Joerg Martini

Peter Kiesel

Michael I Recht

Noble Marshall Johnson

Marshall Bern

David Kalman Biegelsen

Alex N Hegyi

Michael Bassler

Patrick Yasuo Maeda

Doron Kletter

Bowen Cheng

Christopher L Chua

Jeffrey N Roe

Francisco Eduardo Torres

Richard H Bruce

Scott Albert Uhland

Markus Beck

Palghat Srinivas Ramesh

David Mathew Johnson

Gregory Lewis Whiting

Anne Plochowietz

Malte Huck

Eric Peeters

David Kirtland Fork

Eugene Michael Chow

Jengping Lu

Alan G Bell

Philipp Helmut Schmaelzle

Thomas Wunderer

Gregory B Anderson

Sourobh Raychaudhuri

Zhihong Yang

Bryan Thomas Preas

Martin Sheridan

Jacob N Chamoun

Tim Curley

Joseph Lee

Gabriel Iftime

Robert Anthony Street

Yu Wang

Ashish V Pattekar

David Eric Schwartz

Steven E Ready

Jessica Louis Baker Rivest

Janos Veres

Junhua Wei

Joanne L Lee

Elif Karatay

Kathryn F Murphy

Stephen Matthew Meckler

Andre Strittmatter

Tobias Buergel

Antonio Williams

Mark Teepe

Anne Plachowietz

Marshall W Bern

Francisco E Torres Torres

A three dimensional biological scaffold structure that includes a biologically compatible material that forms walls of multiple pores. The pores have a range of pore sizes including a pore size of less than 50 μm and a pore size of greater than 100 μm and also including pores having one or more intermediate pore sizes between 50 μm and 100 μm. The pores occupy more than 50% of a volume of the scaffold structure.

Porous biologically compatible scaffold structure

Focusing optics can include optical elements disposed and bonded in a linear arrangement (linear array) in at least two rows. A transparent bonding agent can secure alignment of the at least two rows of the optical elements. Scattering elements can also be disposed in the transparent polymer to cause light diffusion. Diffused or un-diffused light from a semiconductor laser array can then be caused to pass through the optical element and illuminate a target substrate such as an imaging member in a printing system.

Focusing optics for use with semiconductor lasers for imaging applications

Methods and systems for measuring the temperature of a sample can include the use of one or more illumination sources and a sample containing thermochromic material. One or more detectors are operable to detect two or more signals indicative of a component of an illumination facilitated by the illumination source(s) and scattered at two or more angles with respect to the sample containing the thermochromic material, wherein the signals are converted to a temperature.

Method and system for measuring the temperature of a thermochromic liquid crystal

A computer adapted to convert images into raw data can provide the raw data to a control interface adapted to transmit the raw data with timing information to an electronic driver circuit. The electronic driver circuit can convert the raw data with the timing information provided by a control interface into regulated current signals provided to the semiconductor laser array at 300 dpi and higher. The semiconductor array can convert the current signals into light to illuminate an imaging member. The laser array can comprise vertical cavity surface emitting lasers providing imaging greater than 300 dpi. Each semiconductor laser can operate at 50 mW or greater.

System for electronically controlling and driving independently addressable semiconductor lasers

Ink-based digital printing systems useful for ink printing include a rotatable charge-retentive reimageable surface layer configured to receive a layer of fountain solution. The fountain solution is carried to the charge retentive surface by a fog or mist including fountain solution aerosol particles, dispersed gas particles, and charge directors that impart charge to the fountain solution aerosol particles. The charge-retentive reimageable surface may be charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged fountain solution adheres to portions of the charge-retentive reimageable surface according to the electrostatic latent image to form a fountain solution image thereon. The fountain solution image can be partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate.

Charged particle generation, filtration, and delivery for digital offset printing applications

A laser imager for a printing system, comprising a plurality of independently addressable surface emitting lasers arranged in a linear array on a common substrate chip and including a common cathode and a dedicated control channel associated with an address trace line for each laser of the plurality of independently addressable surface emitting lasers, and optical elements arranged in a linear lens array configured to capture and focus light from the plurality of independently addressable surface emitting lasers onto a imaging member, wherein the plurality of independently addressable surface emitting lasers arranged in a linear array and the optical elements arranged in a linear lens array operate together to image the imaging member.

Semiconductor array imager for printing systems

Ink-based digital printing systems useful for ink printing include a secondary roller having a rotatable reimageable surface layer configured to receive fountain solution. The fountain solution layer is patterned on the secondary roller and then partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate. To achieve a very high-resolution (e.g., 1200-dpi, over 900-dpi) print with these secondary roller configurations, an equivalent very high-resolution fountain solution image needs to be transferred from the secondary roller onto the imaging blanket. To increase the resolution of the image on the secondary roller, examples include a textured surface layer added to the secondary roller for contact angle pinning the fountain solution on the roll. Approaches to introduce a micro-structure onto the surface layer of the secondary roller, and also superoleophobic surface coatings are described.

Secondary roller for fountain solution contact angle pinning

Based on evaporation of fountain solution from a rotating blanket cylinder to create an image that may be inked and printed, a digitally addressable heater array at or just below the blanket surface evaporates deposited fountain solution and forms a fountain solution latent image on the surface. The heater array has controllable heating elements (e.g., field effect transistors, thin film transistors) that provide a transient heat pattern on the surface to evaporate the fountain solution. Heat is generated by current flow in the heating elements, and power developed by the heating circuit is the product of source-drain voltage and current in the channel. Current may be supplied along data lines by an external voltage controlled by digital electronics to provide the desired heat at heating elements addressed by a specific gate line. The heater array may include a current return line that may be a 2-dimensional mesh.

Matrix-addressed heat image forming device

A structure can be provided for collimating light from a light source (e.g., vertical cavity surface emitting diodes). The structure can include at least one light source, a pit formed at an output of the at least one light source and a microbead formed in the pit. Microbeads can function as a lens to collimate light emitting from the at least one light source. The structure can provide by forming an array of VCSELs on a substrate, forming a pit in front of each VCSEL of the array of VCSELs, and assembling a microbead in each pit formed in front of each VCSEL. The microbeads can thereby function as lenses to collimate light emitted from the VCSELs.

Structure for collimating a light source

One or more live substances is cultured at a plurality of test locations of a test vessel. The test locations include a thermochromic material and one or more test substances. A spectral shift in light emanating from the thermochromic material of the test locations is detected. The spectral shift occurs in response to an increase or decrease in energy conversion by the live substance. An effect of the one or more test substances on the live substances is determined based on the detected spectral shift.

Thermochromic sensing devices, systems, and methods

A method and system for enabling a patterned liquid, can involve creating a heat image on an imaging blanket by selectively heating the imaging blanket with a digitally controlled energy source, and subjecting the heat image to a selective deposition of a fountain solution material to enable vapor condensation on unheated areas and vapor rejection from heated areas to generate a fountain material image.

Pre-heat addressed vapor rejection for fountain solution image formation

A test vessel includes one or more test locations configured to contain a medium suitable for culturing a live substance. A thermochromic material is thermally coupled to the one or more test locations. The thermochromic material is configured to exhibit a spectral shift in light emanating from the thermochromic material in response to an increase or decrease in energy conversion by the live substance that causes a change in temperature of the thermochromic material.

A nanocalorimeter device includes a substrate having test cells, each test cell comprising a sample location. Each sample location includes a reaction surface suitable for an enthalpic reaction of constituents of liquid droplets, droplet movement and configured to merge the droplets, and a layer of thermochromic material thermally coupled to the reaction surface. The thermochromic material is configured to exhibit a spectral shift in light emanating from the thermochromic material in response to a change in temperature of the merged droplets.

Thermochromic sensing for nanocalorimetry

A test strip includes a substantially transparent substrate and one or more colorimetric test spots on the transparent substrate. Each colorimetric test spot has one or more sensing chemicals chemically attached onto a porous support material. The porous support material has at least one exposed surface configured to absorb a body fluid. The one or more sensing chemicals are configured to change a color in response to a presence of a target drug in the body fluid.

Colorimetric drug test strip using porous support material

A method of operating a hyperspectral imaging device includes connecting electrodes on a liquid crystal variable retarder to a voltage source, rotating liquid crystal material in the liquid crystal variable retarder between a first orientation with a certain optical phase delay and a second orientation with a different optical phase delay, receiving a beam of light at an image sensor that has passed through the liquid crystal variable retarder, and producing an output signal from the image sensor.

Liquid crystal fourier transform imaging spectrometer

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San Francisco, CA, United States of America

Joerg Martini