MOVING DEVICE OF TONER PARTICLE

摘要

PURPOSE: To provide a toner grain moving device in an one-component developer system capable of applying a stable toner layer to a doner roller. CONSTITUTION: A fixed drop tube 84 connects a remote toner hopper 86 to a developer housing chamber. Toner grains stored in the hopper 86 are moved along the chamber and its longitudinal direction in an arrow 83 direction by an auger 82 rotatably loaded in the tube 84. A part of the tube 84 which is completely arranged in the chamber has plural holes uniformly arranged around it, so that toner can be uniformly dispersed over the whole length of the tube 84. A perforated tube 88 rotatably loaded in the chamber on the outside of the tube 84 consists of a tube extended under a doner roller 74 along the roller 74 and having plural holes formed at an equal interval. When the tube 88 is rotated, a toner grain layer carried by the auger 82 and the tube 84 is agitated and the preloading of the toner grains to the doner roller 74 is promoted.