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Electrophotographic Process Disclosure Number: IPCOM000086536D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

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Hausle, WC: AUTHOR [+2]


This apparatus controls loose toner in an electrophotographic system.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Electrophotographic Process

This apparatus controls loose toner in an electrophotographic system.

The control of the loose toner or toner that is not under electrostatic control is accomplished by intercepting the toner as early as practical in the electrophotographic process and causing it to transfer to a surface from which it can be scavenged for disposal.

An electrostatic target electrode is mounted close to the photoconductor surface to provide an alternate path for toner that is weakly held to the photoconductor either because of the wrong sign or weak charge. The target electrode can be one or more pieces with a potential of the appropriate sign. In the case of multiple electrodes, the potential may be commutated, and it may be desirable to have segments of both polarities. The electrodes may be mounted for movement, relative to the photoconductor, either continuously or incrementally. The electrodes are cleaned of toner by some suitable means, such as a doctor blade, by wiping, vacuuming, etc., either continuously or at selected intervals.