Patents by Inventor David B. Schaefer
David B. Schaefer 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: 8348268Abstract: A new media path includes a flexible member that cooperates with a control point for smooth transitions of media sheets along the path. The media path includes an elongated member having a first end and a second end, the elongated member having a longitudinal axis and a cross-member axis perpendicular to the longitudinal axis, the elongated member having a first surface that is non-linear in at least one of the longitudinal and cross-member axes, and a bevel on a second surface of the elongated member, the bevel being proximate to the first end of the elongated member at a predetermined distance from the first end.Type: GrantFiled: February 5, 2009Date of Patent: January 8, 2013Assignee: Xerox CorporationInventors: Carl Thomas Urban, David B. Schaefer, Rob Huala
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Patent number: 8172228Abstract: An integrated module for installation within a printer may include a module frame and a plurality of printer subsystem components. The module frame is configured to fit within a predetermined space within a printer and to connect to a printer frame positioned about the predetermined space. The plurality of printer subsystem components are configured to mount to the module frame. At least one printer subsystem component includes a default module media path and at least one diverter-directed module media path within the printer subsystem component. The at least one printer subsystem component is configured to connect to the module frame at a position that enables the default module media path and the at least one diverter-directed module media path to complete a printer media path through the predetermined space when the module frame having the printer subsystem component is connected to the printer frame.Type: GrantFiled: March 26, 2009Date of Patent: May 8, 2012Assignee: Xerox CorporationInventors: Rob Huala, Jos Jacobs, David B. Schaefer
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Publication number: 20100247214Abstract: An integrated module for installation within a printer may include a module frame and a plurality of printer subsystem components. The module frame is configured to fit within a predetermined space within a printer and to connect to a printer frame positioned about the predetermined space. The plurality of printer subsystem components are configured to mount to the module frame. At least one printer subsystem component includes a default module media path and at least one diverter-directed module media path within the printer subsystem component. The at least one printer subsystem component is configured to connect to the module frame at a position that enables the default module media path and the at least one diverter-directed module media path to complete a printer media path through the predetermined space when the module frame having the printer subsystem component is connected to the printer frame.Type: ApplicationFiled: March 26, 2009Publication date: September 30, 2010Applicant: XEROX CORPORATIONInventors: Rob Huala, Jos Jacobs, David B. Schaefer
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Publication number: 20100194035Abstract: A new media path includes a flexible member that cooperates with a control point for smooth transitions of media sheets along the path. The media path includes an elongated member having a first end and a second end, the elongated member having a longitudinal axis and a cross-member axis perpendicular to the longitudinal axis, the elongated member having a first surface that is non-linear in at least one of the longitudinal and cross-member axes, and a bevel on a second surface of the elongated member, the bevel being proximate to the first end of the elongated member at a predetermined distance from the first end.Type: ApplicationFiled: February 5, 2009Publication date: August 5, 2010Applicant: XEROX CORPORATIONInventors: Carl Thomas Urban, David B. Schaefer, Rob Huala
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Patent number: 7674056Abstract: An image output device includes a marking engine and a media path adjacent the marking engine. The media path has a media transportation direction and a media transport element (e.g., a nip drive, a belt drive, a suction drive, an air pressure drive, etc.) within the media path that moves the media along the media path in the media transportation direction. A drive motor is operatively connected to the media transport element. The drive motor provides drive force in a forward direction that causes the media transport element to move media along the media path in the media transportation direction. The drive motor can also provide the drive force in a reverse direction opposite the forward direction. A one-way drive transfer device (e.g., a one-way clutch, a one-way swing arm mechanism, etc.) is operatively connected to the drive motor. The one-way drive transfer device only transfers drive force from the drive motor when the drive motor operates in the reverse direction.Type: GrantFiled: March 10, 2006Date of Patent: March 9, 2010Assignee: Xerox CorporationInventors: Timothy C. Shaw, Daniel C. Park, Rich Chambers, Darryl I. Jensen, Jos Jacobs, Danielle R. Hall, David B. Schaefer
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Patent number: 7025345Abstract: A sheet feeder and separator assembly for separating and sequentially feeding individual print media sheets from a stack thereof includes a frame having at least one bearing recess. A removable print media tray is carried by the frame. A separator is connected to the removable print media tray. A pick module assembly is removably connected to the frame adjacent the removable print media tray. The pick module assembly includes a pick roller adjacent the separator to form a nip and at least one flexible bearing is removably received in the at least one bearing recess to removably connect the pick module assembly to the frame.Type: GrantFiled: January 8, 2004Date of Patent: April 11, 2006Assignee: Xerox CorporationInventors: Isaac S. Frazier, Jos W. Jacobs, Carl T. Urban, David B. Schaefer
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Patent number: 6164752Abstract: A method for purging an ink jet print head to clear ink jet orifices is provided. A purge cap forms a vacuum seal over the orifice plate of the print head. Multiple low pressure differential vacuum pulses are applied to the purge cap to remove debris and trapped air bubbles from the ink jet orifices. The low pressure pulses avoid cavitation inside the print head and reduce the amount of ink expelled during the purging process.Type: GrantFiled: November 6, 1998Date of Patent: December 26, 2000Assignee: Xerox CorporationInventors: David B. Schaefer, Edward F. Burress, Timothy R. Golik, Ernest I. Esplin
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Patent number: 5315928Abstract: An impact printer has a print band moving longitudinally around pulleys with one side of the band moving in contact along a rigid platen and the other side having engraved characters presented along a print line of a print medium (e.g. paper and ink ribbon). The leading edge of platen is squared off (e.g. sharp) to scrape contamination off the band. A row of hammers impact the print medium against the band between the hammers and an impact surface of the platen. The impact surface of the platen contains multiple longitudinal grooves which start slightly back from the leading edge of the platen and which prevent increased friction force between the band and platen from occurring as the band wears the platen impact surface smooth.Type: GrantFiled: November 20, 1992Date of Patent: May 31, 1994Assignee: International Business Machines CorporationInventors: D. Michael Bocinski, Craig A. Kaufman, Randy J. Kisacky, Barton H. Kunz, Lawrence A. Stone, Jerry Z. Raski, David B. Schaefer, Douglas A. Schmidt