Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for loading a donor roll. SOLUTION: The apparatus for loading one or more donor rolls of a developer unit is constituted of a developer housing, having a reservoir for a developer material, including toner, a rotatable first donor roll 122 that delivers the toner onto a moving photoconductive belt 110; a rotatable first magnetic brush roll 114 that receives the developer material from the reservoir and delivers the toner to the first donor roll 122; and a rotatable second magnetic brush roll 116 that receives the developer material from the first magnetic brush roll 114 and delivers the toner to the first donor roll 122. The rotation axis of the second magnetic brush roll 116 is positioned above that of the first magnetic brush roll 114. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To implement an apparatus which prolongs the lifetime of a developer material and has sufficient reload and less mottle to provide a high printing image quality and allows high-speed printing which the markets demand. SOLUTION: In order to transport toner to a movable photoconductive belt 110, rotatable donor rolls 12 122 (and 124) constituting a developer unit are loaded with the toner, by a loading apparatus, comprising a reservoir for the developer material and a plurality of rotatable rolls, which are provided in a housing. A trim roll 112 from among the rotatable rolls picks up the developer material in the reservoir and hands off the developer material to a first magnetic brush roll (mag roll) 114. The first mag roll 114 delivers the toner in the developer material to the first donor roll 122 and delivers the developer material to a second mag roller 116. The second mag roller 116, of which the axis of rotation is positioned below that of the first mag roll 114, delivers the toner in the developer material to the first donor roll 122. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To overcome drawbacks of known trickle collection systems and to provide advantages. SOLUTION: A trickle collection system 120 includes a trickle port 134 communicating with the interior of a developer housing 152 and a trickle port housing 150 communicating the trickle port 134 with an external vacuum collection source 154. The trickle collection system includes an air infusion port 204 communicating the interior of the trickle port housing 150 with external air. An aperture of the air infusion port is variable such that the amount of air infusion may be varied in accordance with internal and/or external conditions. COPYRIGHT: (C)2007,JPO&INPIT