Eastman-kodak Company

Daniel D Haas

Timothy John Tredwell

Kurt Michael Sanger

Thomas A Mackin

Sanwal P Sarraf

Lee William Tutt

Mitchell Stewart Burberry

Ravi Sharma

Michael L Boroson

William J Staudenmayer

David B Kay

Kelvin Nguyen

William E Moore

Andrea S Rivers

Theodore K Ricks

Bradley A Phillips

Giana M Phelan

Methods and apparatuses are provided for assembling a structure on a support having a pattern of binding sites. In accordance with the method, a first fluid is provided on the surface of the support with the first fluid being of a type that that increases viscosity when heated, the first fluid having first micro-components suspended therein each adapted to engage the binding sites. The first fluid proximate to selected binding sites is heated to increase the viscosity of the responsive fluid proximate to the selected binding sites so that the first micro-components suspended in the first fluid are inhibited from engaging the selected binding sites.

Thermally controlled fluidic self-assembly

A method of transferring organic material from a donor element to a substrate includes providing a radiation source; and selecting the power of the radiation applied to the donor element by the radiation source to cause the transfer of organic material to the substrate wherein the time that one or more positions of the donor element receives radiation is greater than 1 millisecond.

Linear laser light beam for making OLEDS

A digital film grain () comprises a phototransistor () which produces an electrical signal having a strength which is related to an input radiation flux. A transponder receives commands and power from a base station () and transmits information quantifying the radiation observed by that digital film grain. An image accumulator () connected to the base station () assembles an image from the profile of radiation reported by a distribution of digital film grains correlated to the locations of those grains.

Digital film grain

Exposure of a medium is controlled by changing an emission level of a radiation source from a first power to a second power. The second power emits for less time than required by an irradiance profile to traverse a full-width at half maximum of the irradiance profile projected onto the medium along a direction of relative motion between the irradiance profile and the medium. The emission level changes to the first power emits for less time than required by the irradiance profile to traverse the full-width at half maximum of the irradiance profile projected onto the medium along the direction of relative motion between the irradiance profile and the medium. Then the emission level changes to the second power. Brief pulsing of a single binary source can transfer intermediate amounts of thermally transferable colorant from a donor exhibiting a continuous-tone transfer response.

Method and apparatus for controlling exposure amplitude and printed track width by pulse width modulation

A calibration station ( ) for a printhead ( ) adapted to provide a beam of electromagnetic radiation from a variable electromagnetic energy source onto a sensitive radiation medium, the calibration station ( ), incorporates a sensor ( ) disposed for sensing the beam ( ) provided by the printhead ( ), wherein the sensor ( ) provides an output sensor signal indicative of the sensed power of the beam ( ). A control circuit is adapted to accept the output sensor signal from the sensor and adjusts the variable electromagnetic energy source. A filter is disposed in the path of the beam ( ) between the printhead ( ) and sensor ( ), adapted to transmit to the sensor ( ) a portion of incident electromagnetic radiation over a predefined range of wavelengths, dependent upon a measured response characteristic of the radiation-sensitive medium.

Calibration station for a printhead adapted to compensate for the wavelength sensitivity of an image recording material

A laser thermal system that uses a dye donor produces a desired relationship of exposure to density by modifying the input current waveform supplied to the exposure source. The modification is a combination of amplitude modulation and pulse width modulation in an imagewise fashion. The efficiency and the speed of image formation is increased by bringing the dye donor temperature near the threshold of dye transfer using a segment of the total current waveform for a very short duration.

Combined pulse-width and amplitude modulation of exposing laser beam for

A fuser for fixing toner, for example, toner images, includes thermoelectric control devices for controlling temperature. Preferably, the thermoelectric control devices are used to heat the toner in a heating zone and cool the toner in a cooling zone prior to separation of the toner from a fusing surface. The cooling improves both the gloss and the separation characteristics of the toner.

Fuser having thermoelectric temperature control

A multiple-source array for use in thermal printing uses source interleaving to avoid overlapping of the dye-transfer tracks upon the donor material in a single pass. This prevents the formation of artifacts in the image because of thermal interaction among either the sources or printing spots. This also permits the thermal array to be oriented predominantly perpendicular to the first-scan direction so that any arcuate shape of the array causes minimal spacing variations of the scan lines and minimizes spacing variations in focus for laser-thermal printing or document source separation for resistive-head thermal printing. Interleaving also allows multiple printheads to be used even when they have different printing characteristics. The array includes independently addressable printing element data channels and a data distributor allowing interleaving to be accomplished in the printhead. The printhead also includes pixel replication circuitry that allows pixel replication in both the fast and slow scan directions.

Interleaving thermal printing with discontiguous dye-transfer tracks on

A multiple-source array for use in thermal printing uses source interleaving to avoid overlapping of the dye-transfer tracks upon the donor material in a single pass. The array includes independently addressable printing element data channels and a data distributor allowing interleaving to be accomplished in the printhead. The printhead also includes pixel replication circuitry that allows pixel replication in both the fast and slow scan directions.

Printhead having data channels with revisable addresses for interleaving

There is disclosed a thermal printer system having a multiple channel laser print head which focuses closely spaced spots of laser light energy onto a dye donor element which moves at constant velocity relatively past the print head. These laser light spots respectively print multiple lines of an image a swath at a time by heat transfer of pixels or subpixels of dye from the dye donor element to a receiver element. A light source (such as an arc lamp) applies to the dye donor element one or more precisely positioned spots of light energy which elevate the temperature of the dye donor element substantially uniformly within a zone coincidently with and closely surrounding the laser light spots. The shape, the position and the power absorbed within the zone from the light source are carefully controlled. Thus the temperature within this zone is held to a substantially uniform value slightly below the vaporization temperature of the dye to be transferred from the dye donor element. In this way the linearity and fidelity of a printed image are substantially improved, and 'printing artifacts' such as banding and streaking are reduced.

Thermal printing system

A method of scanning is disclosed in which an array of light sources is used to record an image on a light-sensitive recording medium. Each of the light sources is modulated in accordance with an information signal. Multiple passes of the array are made relative to the recording medium, and a set of raster lines is recorded in each pass. The raster lines of successive sets are interleaved to space the raster lines closer together than the spacing of the light sources in the array. In order to provide precise spacing of the raster lines, the array of light sources is advanced a constant distance between successive sets of raster lines.

Method of scanning

A method is disclosed for calibrating a reflectometer using black and white references observed in locations optically different from the sample location. Dark and light standards are selected to have reflectance values, while examined in the detection location of the test elements, that are within .+-.0.005 and .+-.0.05 of the values of the black and white references, respectively, when examined in a location displaced from the detection location of the test elements. Such standards are then read on a referee reflectometer having 'ideal' black and white references, and the reflectances so read on the referee reflectometer are recorded for use as calibrating factors in making reflectance readings for the test elements.

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Webster, NY, United States of America

Daniel D Haas