Improvement of Reliability of Electronic Components of Photocopying Machines and Facsimiles

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Troubles of photocopying machines and facsimiles led us to measure the power line voltages at the interior wirings in general homes and plants over six months. Data of abnormal voltages, such as a repetitive surge of 430 V and 170 μs, and an overvoltage of 345 Vrms, was obtained. A device which can simulate the measured voltage waveform was developed to reproduce the abnormal voltage for analyzing the cause for failure or malfunctioning. A method of evaluating a varistor connected across AC power lines by superimposing a surge on the line voltage was developed, and no-fire electrolytic capacitors which had already been put to practical use were verified by applying an overvoltage to them.

Document Type: Research Article

Publication date: January 1, 2002

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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