FLAMES FIX VIA WIRE VIBRATION
Original Publication Date: 1991-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
A method for reducing certain copy quality defects in electrophotographic printing and copying machines is disclosed. Contamination build-up of toner and debris on a charge scorotron wire may lead to distortion and loss of the charge corona and subsequently to copy quality defects known as "tiger stripes" or "flames". The contamination build-up may be remedied by mechanical vibration of the wire. The vibration may be induced by electrically exciting the scorotron wire at one or more of its resonant frequencies. The electrical excitation may be controlled by a computer algorithm, for example, during cycle down, during power up, just before entering a power saving mode or by electrical hardware design. Regular periodic mechanical vibration of the scorotron wire eliminates contamination build-up and extends the useful life of the copy cartridge module containing the scorotron.