Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 2, 2010
Patent Application Number
11241219
Date Filed
September 30, 2005
Patent Primary Examiner
Patent abstract
An ink jet pen that is equipped with a free ink chamber. The ink jet pen has a free ink chamber in fluid communication with a negative pressure producing chamber. The negative pressure producing chamber is in communication with a printhead. The ink jet pen has a power source and a surface detection device. The surface detection device is adapted to move along a surface of the substrate.
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