Patent ID: 7191625
Filing Date: 2007-03-20
Classification: G03G

Abstract:
1. A method of cleaning an aluminum drum substrate for an electrophotographic photoconductor, comprising: forming a plurality of aluminum drum substrates using cold drawing and cutting operations; after said forming, arranging the plurality of aluminum drum substrates in rows, with an axis of each drum substrate being vertical and parallel with the axis of the other drum substrates; ejecting a cleaning liquid at a predetermined ejection pressure from a high pressure cleaning nozzle, the cleaning liquid being ejected in a fan shape having a predetermined spread angle and from above a top opening of one of the drum substrates towards the drum substrate; and while ejecting the cleaning liquid, horizontally and sequentially traversing the nozzle above openings of the other drum substrates in a direction of the row, while swinging the nozzle in the direction of the row.