公开(公告)号：US10252524B1

公开(公告)日：2019-04-09

申请号：US15729382

申请日：2017-10-10

Applicant: XEROX CORPORATION

Inventor： Steven Ross Slotto ,  Jonathan R. Brick ,  David L. Knierim ,  Chad J. Slenes

IPC: B41J2/045 ,  B41J2/165

Abstract: An inkjet printing system, including an inlet in a print head to receive ink from an ink supply, a plurality of nozzles to eject ink in the print head, an ink pressure sensor disposed in an ink path, the ink pressure sensor configured to determine an ink pressure of the ink in the print head and output a signal indicating the ink pressure, and a controller in the print head configured to receive and process the signal indicating the ink pressure from the ink pressure sensor. The inkjet printing system may also include a memory to store an ink pressure and time profile. The controller may also output a signal to stop ejecting ink from the plurality of nozzles when the ink pressure is either below a negative threshold or above a positive threshold.

公开(公告)号：US20190105897A1

公开(公告)日：2019-04-11

申请号：US15729382

申请日：2017-10-10

Applicant: XEROX CORPORATION

Inventor： Steven Ross Slotto ,  Jonathan R. Brick ,  David L. Knierim ,  Chad J. Slenes

IPC: B41J2/045

Abstract: An inkjet printing system, including an inlet in a print head to receive ink from an ink supply, a plurality of nozzles to eject ink in the print head, an ink pressure sensor disposed in an ink path, the ink pressure sensor configured to determine an ink pressure of the ink in the print head and output a signal indicating the ink pressure, and a controller in the print head configured to receive and process the signal indicating the ink pressure from the ink pressure sensor. The inkjet printing system may also include a memory to store an ink pressure and time profile. The controller may also output a signal to stop ejecting ink from the plurality of nozzles when the ink pressure is either below a negative threshold or above a positive threshold.

公开(公告)号：US09789697B1

公开(公告)日：2017-10-17

申请号：US15220686

申请日：2016-07-27

Applicant: XEROX CORPORATION

Inventor： David L. Knierim ,  Steven Ross Slotto ,  Blake Terry Weimer

IPC: B41J2/175 ,  G01F23/24 ,  G01F23/26

CPC classification number: B41J2/17566 ,  B41J2/17513 ,  B41J2002/17579 ,  G01F23/24 ,  G01F23/241 ,  G01F23/265 ,  G01F23/266

Abstract: A fluid sensor has a first electrode, a second electrode, a housing containing the first and second electrodes, such that the electrodes extend from the housing, exposed metal between the first and second electrodes, and a drive signal electrically connected to the second electrode, such that when fluid is present in the reservoir, either the first electrode senses the presence of the fluid, or the drive signal senses presence of the fluid. A fluid sensor has a first electrode, a second electrode, a housing containing the first and second electrodes, a drive signal electrically connected to the second electrode, and sensing circuitry to measure a current from the second electrode to indicate a fluid level.