Patents by Inventor James M. Stevenson
James M. Stevenson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8615880Abstract: An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment.Type: GrantFiled: January 18, 2010Date of Patent: December 31, 2013Assignee: Xerox CorporationInventor: James M. Stevenson
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Patent number: 8603284Abstract: A fluid dispensing subassembly, includes a first set of plates including a diaphragm to be operated on by a transducer, a second set of plates including at least one manifold plate to direct ink to an aperture plate forming an exterior surface of the second set of plates, and a polymer compliant film arranged in between the first and second sets of plates to attach the first and second sets of plates together to form the fluid dispensing subassembly.Type: GrantFiled: July 1, 2010Date of Patent: December 10, 2013Assignee: Xerox CorporationInventors: Terrance L. Stephens, John R. Andrews, John S. Moore, James M. Stevenson
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Publication number: 20100263791Abstract: A fluid dispensing subassembly includes a diaphragm arranged to be operated on by a transducer, an aperture array through which fluid is forced onto a substrate, a manifold body between the diaphragm and the aperture array, a spacer between the manifold body and the aperture array, the spacer arranged to form a gap at least partially overlapping the manifold, and a compliant film arranged between the manifold body and the spacer such that the fluid resides on a side of the film adjacent the manifold, and that the film is unsupported by the spacer over a least a portion of the manifold.Type: ApplicationFiled: July 1, 2010Publication date: October 21, 2010Applicant: XEROX CORPORATIONInventors: Terrance L. Stephens, John R. Andrews, John S. Moore, James M. Stevenson
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Patent number: 7766463Abstract: A fluid dispensing subassembly includes a diaphragm arranged to be operated on by a transducer, an aperture array through which fluid is forced onto a substrate, a manifold body between the diaphragm and the aperture array, a spacer between the manifold body and the aperture array, the spacer arranged to form a gap at least partially overlapping the manifold, and a compliant film arranged between the manifold body and the spacer such that the fluid resides on a side of the film adjacent the manifold, and that the film is unsupported by the spacer over a least a portion of the manifold.Type: GrantFiled: August 19, 2008Date of Patent: August 3, 2010Assignee: Xerox CorporationInventors: Terrance L. Stephens, John R. Andrews, John S. Moore, James M. Stevenson
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Publication number: 20100118296Abstract: An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment.Type: ApplicationFiled: January 18, 2010Publication date: May 13, 2010Applicant: XEROX CORPORATIONInventor: James M. Stevenson
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Patent number: 7669985Abstract: An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment.Type: GrantFiled: April 23, 2007Date of Patent: March 2, 2010Assignee: Xerox CorporationInventor: James M. Stevenson
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Publication number: 20100045738Abstract: A fluid dispensing subassembly includes a diaphragm arranged to be operated on by a transducer, an aperture array through which fluid is forced onto a substrate, a manifold body between the diaphragm and the aperture array, a spacer between the manifold body and the aperture array, the spacer arranged to form a gap at least partially overlapping the manifold, and a compliant film arranged between the manifold body and the spacer such that the fluid resides on a side of the film adjacent the manifold, and that the film is unsupported by the spacer over a least a portion of the manifold.Type: ApplicationFiled: August 19, 2008Publication date: February 25, 2010Applicant: XEROX CORPORATIONInventors: Terrance L. Stephens, John R. Andrews, John S. Moore, James M. Stevenson
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Patent number: 7665828Abstract: A drop generator including a fluid channel substructure having a pressure chamber and an inlet formed therein, a diaphragm layer overlying the fluid channel substructure, a transducer substructure attached to the diaphragm layer, and an ink feed aperture formed in the diaphragm layer.Type: GrantFiled: September 21, 2006Date of Patent: February 23, 2010Assignee: Xerox CorporationInventors: James M. Stevenson, Bradley J. Gerner, Dan L. Massopust
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Patent number: 7527359Abstract: A print head has an array of jets formed in a jet stack to deliver ink to an image receptor and at least one ink reservoir to deliver ink to the jet stack. Control circuitry is arranged on the jet stack with an actuator array arranged on the control circuitry to cause the reservoir to deliver ink in response to signals from the control circuitry. A ground plane is arranged between the actuators and the ink reservoir. A print head has an array of jets formed into a jet stack to deliver ink to a printing medium and an actuator array formed on the jet stack, each actuator separated from other actuators by gaps. A spacer is arranged on the jet stack so as to fill the gaps between the actuators.Type: GrantFiled: December 29, 2005Date of Patent: May 5, 2009Assignee: Xerox CorporationInventors: James M. Stevenson, John R. Andrews, Bradley J. Gerner, Chad J. Slenes, Jonathan R. Brick
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Publication number: 20080259121Abstract: An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment.Type: ApplicationFiled: April 23, 2007Publication date: October 23, 2008Applicant: XEROX CORPORATIONInventor: James M. Stevenson
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Publication number: 20080074478Abstract: A drop generator including a fluid channel substructure having a pressure chamber and an inlet formed therein, a diaphragm layer overlying the fluid channel substructure, a transducer substructure attached to the diaphragm layer, and an ink feed aperture formed in the diaphragm layer.Type: ApplicationFiled: September 21, 2006Publication date: March 27, 2008Inventors: James M. Stevenson, Bradley J. Gerner, Dan L. Massopust