Xin Wen

US Patent:

6334676, Jan 1, 2002

Filed:

Apr 23, 1998

Appl. No.:

09/065283

Inventors:

Linda A. Kaszczuk - Webster NY
David L. Cole - Rochester NY
Xin Wen - Rochester NY
Richard A. Landholm - Canandaigua NY
Anthony R. Lubinsky - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 217

US Classification:

347 96, 347100, 3461401

Abstract:

In a method for microfluidic printing of colored images on a receiver, including providing a first set of reservoirs containing colorant precursors for different colors; providing at least one reservoir containing a reactant; and reacting the colorant precursors and reactant(s) to provide colored pixels of the desired colors.

US Patent:

6334677, Jan 1, 2002

Filed:

Dec 11, 1998

Appl. No.:

09/210182

Inventors:

Xin Wen - Rochester NY
Henry G. Wirth - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 201

US Classification:

347101, 400582

Abstract:

Ink jet printing apparatus for forming a plurality of ink images on receivers in response to one or more digital image file(s) each including at least one or more digital images and information indicating the number of ink images to be made. The ink jet printing apparatus includes at least one ink jet print head adapted to deliver ink to the receiver and at least two receiver webs. The ink jet printing apparatus selectively moves one or more receiver webs along a receiver path past the ink jet print head. A control circuitry responsive to the digital image file(s) determines the locations of the ink images to be formed on the two receiver webs in such a manner that minimizes receiver waste. The ink jet printing apparatus actuates the ink jet print head(s) to form ink images on the receiver webs, whereby receiver waste is minimized.

US Patent:

6341859, Jan 29, 2002

Filed:

Dec 10, 1998

Appl. No.:

09/210061

Inventors:

Xin Wen - Rochester NY
Henry G. Wirth - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 201

US Classification:

347101, 40012018

Abstract:

Ink jet printing apparatus is disclosed for forming ink images on a receiver and for treating the ink images formed on the receiver in response to one or more digital image file(s) each including at least one digital image. At least one ink jet print head delivers ink to the receiver, which moves along a first receiver path past the ink jet print head. A receiver cutter is actuatable to cut the receiver across the first receiver path. The receiver is moved along a second receiver path that is perpendicular to the first receiver path and a receiver finisher provided adjacent to the second receiver path treats the ink images formed on the receiver for enhancing the durability and the stability of such ink images. Control circuitry is responsive to one or more digital image files for actuating the ink jet print head to form a plurality of ink images on the receiver, and for actuating the receiver cutter and the receiver finisher in a time sequence so as to automatically produce prints of stable ink images.

US Patent:

6345880, Feb 12, 2002

Filed:

Jun 4, 1999

Appl. No.:

09/326363

Inventors:

Charles D. DeBoer - Palmyra NY
Xin Wen - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 2135

US Classification:

347 45, 347 44, 347 47

Abstract:

An ink jet print head is provided that includes a nozzle plate having an outer metal layer having nozzles for ejecting ink drops, and a coating of a non-wetting polymer chemically bound over the outer surface of the metal layer of the plate. Preferably, the polymer is a block polymer having a head that includes the chemical group that chemically bonds with the outer metal layer, and a tail that is hydrophobic. The resulting polymer coating prevents inks from pooling, drying, and creating deposits which would otherwise impede or clog the ink jet nozzles. The chemical bonding between the non-wettable polymer and the metal surface creates a highly durable polymeric layer that resists being wiped off during both printing and head cleaning operations.

US Patent:

6352328, Mar 5, 2002

Filed:

Jul 24, 1997

Appl. No.:

08/899574

Inventors:

Xin Wen - Rochester NY
Rodney L. Miller - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 2205

US Classification:

347 15, 347 11

Abstract:

Digital ink jet printing apparatus and method. The apparatus receives an input image file having a plurality of pixels, each pixel described by at least one pixel value respectively associated with an optical density. The apparatus comprises a printhead and at least one nozzle integrally attached to the printhead, the nozzle being capable of ejecting an ink droplet therefrom to define an associated one of the optical densities. A waveform generator is connected to the nozzle for generating an electronic waveform to be supplied to the nozzle. In this manner, the nozzle ejects the ink droplet in response to the waveform supplied thereto. The waveform is defined by a plurality of pulses. A look-up table stores a plurality of waveform serial numbers assigned to respective waveforms, each waveform being defined by at least one predetermined parameter, such as number of pulses, pulse amplitude, pulse width and/or time delay between pulses. A calibrator receiving the input image converts the pixel values of the input image to waveform index number associated with the waveform serial number.

US Patent:

6353458, Mar 5, 2002

Filed:

Jan 23, 1998

Appl. No.:

09/012890

Inventors:

Dale F. McIntyre - Honeoye Falls NY
Steven D. MacLean - Webster NY
Xin Wen - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

H04N 5222

US Classification:

34833301, 348220

Abstract:

An electronic camera includes optics for focusing an image of a subject at an image plane, an area image sensor disposed at the image plane for receiving the image subject and producing a digital image having a plurality of pixels that represent the subject, and a storage structure coupled to the area image sensor for storing the digitized image of the subject. A non-emissive display for displaying an image corresponding to the stored image, includes field-driven solid phase particles disposed in a matrix that can change reflective density in the display in response to an applied electric field, and an electronic addressing arrangement including electrodes for applying voltages across the field-driven particles at particular locations corresponding to pixels in response to the stored image to produce a displayed image of the subject.

US Patent:

6354689, Mar 12, 2002

Filed:

Dec 22, 1998

Appl. No.:

09/218615

Inventors:

Douglas W. Couwenhoven - Fairport NY
Lam J. Ewell - Rochester NY
Xin Wen - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 29393

US Classification:

347 19

Abstract:

The present invention generally relates to a method and apparatus for compensating for malperforming or inoperative ink nozzles in a multitone ink jet printhead so that high quality images are printed although some ink nozzles are malperforming or inoperative. Multitone printing is effected by printing a variety of droplets of varying volumes at a given pixel location. In compensating for a malperforming nozzle, a swath data signal is modified and one or more functional nozzles are assigned the printing data for a malperforming nozzle such that the volume of ink ultimately printed at pixel locations is substantially unchanged and the resulting image is free from degradation. Additionally, malperforming nozzles may be assigned values which represent the degree of image degradation that would be caused by printing with the malperforming nozzles, such that these values may be taken into consideration during the process of modifying the swath data signal for complementary recording.

US Patent:

6394577, May 28, 2002

Filed:

Aug 19, 1999

Appl. No.:

09/377482

Inventors:

Xin Wen - Rochester NY
David L. Jeanmaire - Brockport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 221

US Classification:

347 43, 347 37

Abstract:

Ink jet printing apparatus in response to a digital image for forming an ink image on a receiver attached to the surface of a drum rotatable about an axis. The ink jet printing apparatus includes an actuable ink jet print head movable in a direction parallel to the drum axis for delivering ink to the receiver, and rotates the drum such that the attached receiver moves at a predetermined surface velocity. The ink jet printing apparatus moves the ink jet print head at a velocity less than the predetermined velocity of the receiver so that the print head scans an area of drum surface that is skewed relative to the drum axis, and circuitry response to the digital image for simultaneously controlling the rotating and the moving means and means for actuating the inkjet print head to form an ink image within the scanned area wherein two edges of the ink image are parallel to the drum axis and two edges of the ink image are perpendicular to the drum axis.