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The Automatic Primary Charge Roller Detecting System

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In the electro-photography system, the photoconductive materials are charged by either the corona devices or the primary charge rollers. Unlike the corona device, the primary charge roller does not pollute the air, so it is commonly used to charge the photoconductive material in the low speed printing nowadays.

Traditionally, the measurement of the PCR resistance is used to detect the charging ability of the PCR and determine the quality of the PCR.

A new automatic primary charge roller detecting system is introduced in this paper. A high voltage needle tip is used to ionize the air around the PCR. The PCR is charged and discharged under high frequency, the response voltage in the PCR then undergoes the conditioning process where the signal is amplified and the noise are filtered. The signal is then accessed by the high-speed data acquisition interface. A graphic user interface is to display the charging and discharging curve of the PCR test specimen. These curves can be compared with the standard charge and discharge curve of the standard PCR, to determine whether the test specimen is “go” or “not go”. The detection process is easy and time saving.
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Document Type: Research Article

Publication date: 2001-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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