Abstract: A method includes measuring impedances of a body using a plurality of electrodes attached to a patient, as a function of time. A total impedance value is calculated from the measured impedances, as a function of time. Temporal minima of the total impedance value are related with timings of end-of-expirium of the patient.

Abstract: A malfunction diagnosis system of a printer is provided. A printer controller receives malfunction-related input by the user from an input device, which user input specifies a print defect perceptible to the user. It generates image data representing a test print job in response to the user input specifying the perceptible print defect, and forwards the test print job image data to the printing unit to produce a corresponding test printout. Measurement data output from a sensing device as measured on the test printout is received and analyzed, and information indicative of a cause for the print defect based on the analyzed measurement data output from the sensing device is output.

Abstract: A method for monitoring development parameters of a liquid toner electrophotographic (LEP) printer, the method comprising defining an operational window for a current utilized by the printer and monitoring the current to determine a deviation of the current outside the operational window.

Abstract: A malfunction diagnosis system of a printer is provided. A printer controller receives malfunction-related input by the user from an input device, which user input specifies a print defect perceptible to the user. It generates image data representing a test print job in response to the user input specifying the perceptible print defect, and forwards the test print job image data to the printing unit to produce a corresponding test printout. Measurement data output from a sensing device as measured on the test printout is received and analyzed, and information indicative of a cause for the print defect based on the analyzed measurement data output from the sensing device is output.

Abstract: An electrophotographic printing apparatus may include an image-forming member having a surface on which a latent electrostatic image can be formed and developed for transfer of the developed image to a substrate and a developer for depositing ink including charged particles onto the surface to develop the latent image. The developer may include an ink bearing surface from which ink is transferred and a cleaner for removing ink from the ink bearing surface. The developer may further include an adjustable power system generating an electric potential between the ink bearing surface and the cleaner such that charged ink particles remaining on the ink bearing surface after the transfer of ink to the image-forming member are removed from the ink bearing surface through attraction to the cleaner. A controller may adjust the power system such that a desired electric potential between the ink bearing surface and the cleaner is achieved.

Abstract: A method for monitoring development parameters of a liquid toner electrophotographic (LEP) printer, the method comprising defining an operational window for a current utilized by the printer and monitoring the current to determine a deviation of the current outside the operational window.

Abstract: A method for calibrating the BID current in an electrophotographic printer includes the steps of measuring electrode capacitance of an empty BID unit, installing the BID unit in an electrophotographic printer, comparing the measured capacitance with a calibration curve to determine the proper current for the BID unit, and adjusting the operating current of the BID unit according to the calibration curve.

Abstract: Electrophotographic printing apparatus comprising an image-forming member having a surface on which a latent electrostatic image can be formed and developed for transfer of the developed image to a substrate and a developer for depositing onto the surface of the image-forming member a layer of ink comprising charged ink particles to develop the latent image. The developer comprising an ink bearing surface from which ink is transferred to the image forming member and a cleaner for removing ink from the ink bearing surface. The developer further comprises an adjustable power system for generating an electric potential between the ink bearing surface and the cleaner such that charged ink particles remaining on the ink bearing surface after the transfer of ink to the image-forming member are removed from the ink bearing surface through attraction to the cleaner.

Abstract: A method for calibrating the BID current in an electrophotographic printer includes the steps of measuring electrode capacitance of an empty BID unit, installing the BID unit in an electrophotographic printer, comparing the measured capacitance with a calibration curve to determine the proper current for the BID unit, and adjusting the operating current of the BID unit according to the calibration curve.