Eastman-Kodak Company

Mary A Hadley

Jeffrey Alan Small

Yee S Ng

Martin Potucek

Hieu T Pham

Timothy J White

Keith W Agar

Douglas W Christoffel

Jean M Miskelly

A method of generating an image. The method comprises the steps of: accessing a digital still image comprising a plurality of subjects; applying a subject detection algorithm to the digital still image to detect the plurality of subjects to generate a plurality of subject images, each of the subject images comprising at least one detected subject; and displaying, on a display of the imaging device, at least one portion of the digital still image comprising one of the plurality of subject images.

Method for generating an image of a detected subject

In a non-impact printer apparatus such as an LED printhead a current mirror driver is used to control current to the recording elements, e.g., LED's. The current mirror driver is incorporated in an integrated circuit driver chip and a plurality of these chips are provided on the printhead. Each chip includes two sets of digitally addressable transistors. This allows for individual chip control of current to the respective LED's to correct for nonuniformity of light output from chip to chip due to temperature gradients as well as controlling for light output due to aging of the printhead. A continuously conducting transistor is associated with each set of addressable transistors to provide a minimum offset bias current level and selective activation of the addressable transistors provides for selective increase of a bias current over the minimum level. The bias current is mirrored in those LED's selected for activation.

Non-impact printer apparatus with improved current mirror driver

A non-impact printer apparatus is described that includes a recording head having a plurality of recording elements such as LED's for recording on a recording medium. A plurality of driver chips are provided on the head and each includes a plurality of current driving channels for selectively driving a plurality of recording elements in accordance with respective image data signals. The driver chips each further include an extra current driving channel not associated with a recording element for generating a current related to that sent to said recording elements. Monitoring of the current in the extra channel is provided to permit for changes of current to the recording elements and/or corrected image data to provide fine tuned control over uniformity of the recording elements.

L.E.D. array printer with extra driver channel

In a multi-color electrophotographic reproduction apparatus employing a non-impact electro-optic exposure source, good color balance is obtained by changing the exposure intensity of the recording elements for each different color being imaged. A dot printer apparatus produces a series of different color-resolved electrostatic latent images on a recording member. The apparatus includes an array of discrete elements for dot recording on the recording medium. The elements are selectively enabled for predetermined periods of time during a cycle of operation to form a color-resolved electrostatic latent image on the recording member. Each charged latent image is developed with selected toner particles according to its resolved color. A control signal representative at least in part of the resolved color of each latent image is produced, and the control signal determines the intensity of the elements during each cycle of operation according to each resolved color. The intensity is changed by modifying a voltage bias in a current mirror regulated current driver.

Non-impact printer for recording in color

An LED printhead or the like includes a data bus for carrying multibit digital image data signals for grey level recording. A token bit signal is generated and shifted through registers upon the printhead to enable image data registers associated with each LED to latch the image data signals in appropriate order. The image data signals control the energization times for recording pixels. A digitally adjustable current mirror controls the level of current to each LED during recording. Digital current data signals for controlling this level of current are also communicated over one of the lines of the data bus. A token bit signal is also used to control the latching of current data signals in registers storing the digital data used for current control.

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Greece, NY, United States of America

Mary A Hadley