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Visualization Study of an Interaction Between Airflow and Scattering Toner

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A scattering toner (sometimes called toner cloud) is one of the big problems in a two-component development system, especially in the color imaging system. The scattering toner phenomena are analyzed by microscopic visuali-zation technique and interactions with airflow caused by the magnetic carrier brush are clarified. The boundary area between color developer and photoconductor (nip area) are observed using a high-speed camera with a microscopic lens. A special sucking airflow is generated at the edge of developer case and the scattering toner phenomena in the nip area are restrained by this airflow. The decreasing pressure in the developer case is resulted from the movement of the magnetic carrier brush on the surface of the developer sleeve. As the result two contrary airflows exist close to each other. One is the airflow on the surface of the sleeve produced by rotating roller and the other is by the movement of the magnetic carrier brush. In addition, the stronger is the sprinkling movement of the magnetic carrier brush, the more scattering toner phenomena are observed.

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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