Eastman-kodak Company

Robert J Zolla

James E Roddy

Paul W Jones

Louis S Horvath

Nelson Adrian Blish

Thomas F Powers

Scott P MacKenzie

Richard L Druzynski

J Allen Heath

Martin E Oehlbeck

Joshua Monroe Cobb

William R Markis

Richard J Federico

Leslie Gutierrez

Lou Horvath

Jeffrey R Hawver

John A Heath

A printing apparatus () for printing digital images onto a photosensitive medium () employing, for exposure energy, a light source () that uses various arrays of LEDs (). The printing apparatus () may form the print image using sequential modulation, one color at a time, or by applying all colors simultaneously. Arrangements of discrete LEDs () may include high-intensity devices configured with collector cones () arranged as a multicone structure (), with parabolic reflectors (), or collimating lenses (). Large area LEDs () may alternately be used, arranged on an angled mounting surface (), for example.

Light source using large area LEDs

An apparatus () forms a latent indicium onto a sensitized medium, using an area energy source () for applying a substantially uniform sensitizing energy over an area of the sensitized medium and a pixel exposure source () for applying radiant energy to expose a pattern of pixels () onto the area of the sensitized medium for forming the indicium.

Two-stage exposure device for watermarking film

The present invention provides a method for recording a watermark pattern on a color recording medium that forms an image using a number N of colorants, the method comprising the step of forming the watermark pattern using at least two colorants, but fewer than N colorants.

Motion picture watermarking using two color planes

A method is provided for applying a watermark pattern along a length of photosensitive medium, the photosensitive medium having a frame pitch in the length direction that is the sum of an image frame height plus an interframe distance. The method exposes watermark tiles contiguously along the length of the photosensitive medium, wherein each watermark tile has a height dimension that is an integral divisor of the frame pitch.

Watermarking method for motion picture image sequence

An imaging camera apparatus () for capturing images electronically and providing output data for four separate color channels, red, green, blue, and a fourth saturated primary color, expanding the color gamut over conventional three color channel cameras. An image acquisition unit () directs input light to one, two, or four photosensors () for obtaining four-color image data.

Four color image sensing apparatus

A two level image writer () forms an image from digital data onto a photosensitive medium. A first level illumination system has a first source () for emitting a first polarized light beam having a first color; a second source () for emitting a second polarized light beam having a second color; and a third source () for emitting a third polarized light beam having a third color. A fold mirrors directs each beam to a second level. Three polarizing beamsplitters () on the second level receive the polarized beams from the fold mirrors and isolate polarization states of each of the first, second, and third polarized light beam. Three spatial light modulators () on the second level modulate the first, second, and third polarized light beam from the polarizing beamsplitter prisms to form an array of image pixels according to said digital data. A diechroic combiner () combines the three modulated light beams.

Two level image writer

A printing method and apparatus () for pre-exposing a digital watermark along a length of photosensitive medium at the time of manufacture is disclosed. The printing apparatus has an illumination source () for providing an exposure illumination, first and second LCD spatial light modulators () for modulating the exposure illumination to form first and second exposure patterns according to image data, combining optics providing a single output path for directing both first and second exposure patterns onto the photosensitive medium and transport means for providing, during exposure, lengthwise displacement of the photosensitive medium with respect to the output path. The first and second exposure patterns form, lengthwise along the photosensitive medium, a latent image with modulated stripes having a predetermined intensity corresponding to the exposure patterns.

Method and apparatus for exposing a latent watermark on film

A method for obtaining an adjusted digital image which is compensated for a watermark exposure is described comprising: determining a first sensitometric response of a photographic media without a watermark exposure; determining a second sensitometric response of the photographic media with a watermark exposure; generating a look-up table (LUT) from the first and second sensitometric responses; and modifying a digital representation of an image which is to be printed onto the photographic media in accordance with the look-up table to produce an adjusted digital image. The adjusted digital image may be printed directly onto a final print photographic film that receives a watermark exposure, or may be printed onto a printing negative photographic film to produce a printing negative with an adjusted image, which adjusted image is then printed onto a final print photographic film that receives a watermark exposure. In another embodiment, the characteristic response of a digital film printer may be modified in accordance with a LUT generated from the first and second sensitometric responses, instead of modifying the digital representation of the image which is to be printed onto the photographic media.

Method of image compensation for watermarked film

A printing method and apparatus () for pre-exposing a digital watermark image onto a photosensitive medium () at the time of manufacture is disclosed. For exposure energy, the apparatus employs a single color light source () consisting of an array of LEDs. The LEDs are spatially modulated in intensity by means of a reflective LCD array (). The photosensitive medium () may be compensated to allow such single color pre-exposure while avoiding hue shift and contrast loss. The exposure at the film may be increased by: employing partial frame illumination, pulsing the LEDs with high currents with short pulse durations and low duty cycles, employing two LCD devices () to utilize both polarizations, and dichroically combining two LED () arrays of slightly different wavelengths.

Method and apparatus for watermarking film

A display system () for digital color images using six color light sources () or two or more multicolor LED arrays () or OLEDs () to provide an expanded color gamut. Apparatus () uses two or more spatial light modulators (), which may be cycled between two or more color light sources () or LED arrays () to provide a six-color display output. Pairing of modulated colors using relative luminance helps to minimize flicker effects.

Apparatus for displaying a color image from digital data

A display system ( ) for digital color images using six color light sources ( ) or two or more multicolor LED arrays ( ) or OLEDs ( ) to provide an expanded color gamut. Apparatus ( ) uses two or more spatial light modulators ( ), which may be cycled between two or more color light sources ( ) or LED arrays ( ) to provide a six-color display output. Pairing of modulated colors using relative luminance helps to minimize flicker effects.

Six color display apparatus having increased color gamut

A color printer ( ) for imaging onto a photosensitive medium ( ) that contains four or more layers for providing images having an expanded color gamut. Color printer ( ) directs polarized light from each of four or more light sources ( ) to a spatial light modulator ( ) for forming an image to be printed. Modulated light is conditioned as necessary, then focused through a print lens ( ) onto photosensitive medium ( ). Light sources can be lasers, LEDs, or other suitable components. Embodiments may use a single spatial light modulator ( ) shared with each color path or a spatial light modulator ( ) in each of the four color paths.

Growing community of inventors

Rochester, NY, United States of America

Robert J Zolla