Eastman-kodak Company

David Scott Uerz

Hwei-Ling Yau

James R Sandifer

Douglas W Couwenhoven

James Albert Reczek

Steven C Switalski

Wendy S Krzemien

Alan J Lowne

Hsue-Yang Liu

Michael Alan Marcus

Richard P Szajewski

David T Southby

Xiaoru Wang

Frederick Allen Donahue

David E Decker

Steven A Billow

Christopher Rueby

Timothy M Trembley

Charles R Salerno

Douglas Wayne Couwenhoven

Steven Arthur Billow

Wendy Susan Krzemien

David Edward Decker

Robert Charles Salerno

A method of printing on a recording medium using a printhead having a printhead face that includes an array of marking elements, the method includes advancing the recording medium along a medium advance direction toward a printing region; detecting with a sensor whether a portion of the recording medium is positioned such that it would be in a collision path with the printhead face if the recording medium is advanced into the printing region; and advancing the recording medium into the printing region for printing if it is detected that the recording medium would not be in a collision path with the printhead face.

Detecting potential collision damage to printhead

An inkjet ink set including a cyan ink, a magenta ink and a yellow ink, wherein each of said cyan, magenta and yellow inks individually comprises at least 65% water, between 1% and 5% by weight of a dispersed pigment colorant, a surfactant that reduces static surface tension, a dynamic surface tension reducing agent distinct from the surfactant, and at least one humectant distinct from the surfactant and the dynamic surface tension reducing agent; and wherein each of said cyan, magenta and yellow inks is characterized by exhibiting a viscosity normalized dynamic surface tension at surface refresh ages of 0.01 s of less than 23.0 mN/(m*cP); and wherein the average viscosity normalized dynamic surface tension at a surface refresh age of 0.01 s for said cyan, magenta and yellow inks taken together is less than 22.0 mN/(m*cP).

Inkjet ink sets for high speed printing on plain papers and glossy media

This invention relates to an ink jet ink composition comprising an aqueous medium and at least two different polymers, a first polymer and a second polymer, having a weight average acid number of 70 to 200. In one embodiment the ink is substantially colorless.

Ink jet ink composition

The invention relates to an overcoat composition for an imaged image-recording element, the overcoat composition comprising an aqueous carrier, an optional humectant, an optional surfactant, and 0.05 to 20 weight percent, based on the total weight of the overcoat composition, of an addition polymer having an acid number greater than about 110. The invention also relates to a method of making an imaged image recording element having a transparent overcoat, which method comprises forming an image on the image recording element and applying over the image an overcoat composition of the present invention. The overcoat compositions of the invention provide advantageous stain resistance.

Overcoat composition for image recording materials

This invention relates to an ink jet ink composition comprising an aqueous medium and microgel particles, said particles comprising a crosslinked copolymer prepared from a monomer mixture comprising at least a crosslinking monomer, a polymerizable carboxylic acid monomer, and one or more polymerizable water insoluble vinyl type monomers. The ink composition may be a colorless ink or it may contain a colorant.

Ink jet composition containing microgel particles

A method of determining and applying a protective ink amount to be printed in addition to a plurality of colored ink amounts to make colored pixels in an image including determining the protective ink amount such that the sum of the protective ink amount and the colored ink amounts is greater than or equal to a minimum ink amount necessary to provide adequate durability for the image, and applying using an inkjet printer the colored ink amounts and the protective ink amount to make the colored image pixels.

Inkjet printing using protective ink

A method of determining and applying a protective ink amount to be printed in addition to a plurality of colored ink amounts to make colored pixels in an image including determining a first protective ink amount responsive to the colored ink amounts, determining multitoned colored ink amounts using a multitone processor responsive to the colored ink amounts, and determining a second protective ink amount responsive to the multitoned colored ink amounts. The method also includes determining the protective ink amount responsive to the first protective ink amount and the second protective ink amount to provide adequate durability for the image, and applying using an inkjet printer the colored ink amounts and the protective ink amount to make the colored image pixels.

Using inkjet printer to apply protective ink

A method of doping vanadium pentoxide with silver comprising the steps of: providing vanadium pentoxide gel providing stable colloidal silver and combining the vanadium pentoxide gel and the colloidal silver at room temperature for a period sufficient for vanadium (&plus;5) to be electrochemically reduced to vanadium (&plus;4) and for silver to be oxidized (&plus;1).

Method of preparing silver-doped vanadium pentoxide antistatic agent

An optical probe apparatus and method for determining a position of an image sensor within a digital camera relative to a reference surface. The apparatus includes an optical probe assembly removably mountable to the digital camera. A non-coherent light interferometer in communication with the optical probe assembly is utilized to determine a depth from a reference surface to the image sensor and optical probe assembly.

Digital camera image sensor positioning apparatus including a

A variable filter spectrophotometer, for use with sample and reference; has a main member, a filter unit, a drive, a detector, a light distribution system, and a clamping circuit. The main member defines first and second beam paths, which are intersected by the filter unit. The filter unit has filtering and opaque portions. The filter unit is continuously movable relative to the beam paths in a repeating cycle from a first filtering relation in which the filtering portion is interposed in the first beam path and the opaque portion completely blocks the second beam path, to a first dark relation in which both beam paths are blocked, to a second filtering relation in which the filtering portion is interposed in the second beam path and the first beam path is completely blocked, and to a second dark relation in which both beam paths are completely blocked. The filtering portion is variably transmissive along a direction of movement of the filter unit. The drive continuously moves the filter unit relative to the beam paths. The detector produces a signal responsive to light received. The light distribution system directs light separately to and from the sample and reference, to and from the beam paths, and to the detector. The clamping circuit clamps the signal produced by the detector during the filtering relations to the signal produced by the detector during the dark relations.

Variable filter spectrophotometers

A postacquired spectrophotometer, for use with a sample and reference. The spectrophotometer has a filter unit, defining an axis of movement, and pluralities of designated sites and dark sites disposed in uniform relation to the axis. The designated and dark sites are disposed in alternation. Alternating designated sites have apertures and filters covering the apertures. Further, a main member, coaxial with the filter unit, has sample and reference beam paths, which are intersected by the sites. The main member has disposed, in operative relation to the actuators, an actuator sensor, which generates an integration actuator signal upon alignment with each integration actuator and a clamping actuator signal upon alignment with each clamping actuator. Moreover, a drive continuously moves the filter unit relative to the axis and beam paths. Further, a light distribution system directs light separately from the sample and reference to respective beam paths, and then to a detector, which produces a detector signal responsive to light received. Finally, means for processing the signals is provided, including a clamping circuit, integrators, and a demultiplexer.

Postacquired spectrophotometers

A spectrophotometer is described, comprising a single light source, a single detector, optics for dually and alternatively reading a sample and a reference, and only one moving part. That moving part is a chopper containing multiple pass-through apertures, each filled with a unique bandpass filter to select wavelengths to specifically illuminate the sample or reference. To inform the spectrophotometer whether and when it is reading the sample or the reference, trigger means are provided in at least twice the number of the pass-through apertures.

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Ontario, NY, United States of America

David Scott Uerz