TRANSFER APPARAT METHOD FOR REMOVING RESIDUAL MATERIAL FROM A TRANSFER MEMBER
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Disclosed is an improved printing machine with a transfer apparatus therein of the type having the transfer member 18 associated with a photoconductive member 10, wherein the transfer member effects the transfer of a toner image from the photoconductive member. The improvement comprises a blade 28, movable between a first position contacting the transfer member, and a second position spaced away from the transfer member, and a biasing device associated with the transfer member, for selectively applying to the transfer member a bias of a first polarity, or a bias of a second polarity, opposite to the first polarity. The blade accumulates residual toner material when it is in contact with the transfer member, and is in contact with the transfer member in response to the biasing device applying the bias of the first polarity. The biasing device applies the bias of a second polarity in response to the blade being spaced from the transfer member, so as to attract the accumulated residual toner material to the photoconductive member.