Matrix-addressed heat image forming device

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United States of America Patent

PATENT NO 11780218
APP PUB NO 20220227115A1
SERIAL NO

17494208

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Based on evaporation of fountain solution from a rotating blanket cylinder to create an image that may be inked and printed, a digitally addressable heater array at or just below the blanket surface evaporates deposited fountain solution and forms a fountain solution latent image on the surface. The heater array has controllable heating elements (e.g., field effect transistors, thin film transistors) that provide a transient heat pattern on the surface to evaporate the fountain solution. Heat is generated by current flow in the heating elements, and power developed by the heating circuit is the product of source-drain voltage and current in the channel. Current may be supplied along data lines by an external voltage controlled by digital electronics to provide the desired heat at heating elements addressed by a specific gate line. The heater array may include a current return line that may be a 2-dimensional mesh.

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Patent Owner(s)

Patent OwnerAddress
XEROX CORPORATION201 MERRITT 7 P O BOX 4505 NORWALK CT 06851-1056

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biegelsen, David K Portola Valley, US 216 3671
Lu, Jengping Fremont, US 73 470
Martini, Joerg San Francisco, US 72 619
Street, Robert A Palo Alto, US 116 2019
Wunderer, Thomas Santa Cruz, US 46 987

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