公开(公告)号：US4797704A

公开(公告)日：1989-01-10

申请号：US116200

申请日：1987-11-03

申请人： Ralph E. Williams ,  Lawrence A. Hill ,  Michael E. Jacobs ,  Arthur S. Knoll

发明人： Ralph E. Williams ,  Lawrence A. Hill ,  Michael E. Jacobs ,  Arthur S. Knoll

IPC分类号： G03G15/08 ,  G03G21/00

CPC分类号： G03G15/0896 ,  G03G15/0877 ,  Y10S222/01

摘要： A development station for a low cost copier or printer has a housing having walls that divide the housing into two separate chambers. The first chamber contains a developer mix including carrier particles and toner. The second chamber holds a supply of toner particles. The second chamber holds a single supply of fresh toner particles that are periodically metered to the first chamber. The second chamber is fully enclosed and sealed so that the supply of toner in the second chamber cannot be replenished. A plate in the second chamber rests on top of the toner supply and urges the toner downwardly in the chamber as the toner supply is delivered to the first chamber. When the toner supply is exhausted, the plate blocks the passageway for toner from the second chamber to the first chamber. Thus, if an opening is formed in the top of the second chamber and a new supply of toner is provided to the chamber through the opening, the plate prevents delivery of the new toner supply to the first chamber. Therefore the plate prevents a new supply of toner that may be incompatible with the carrier particles in the second chamber from being used in the development station.

摘要翻译： 用于低成本复印机或打印机的开发站具有壳体，该壳体具有将壳体分成两个分开的室的壁。 第一室包含显影剂混合物，包括载体颗粒和调色剂。 第二个室保持调色剂颗粒供应。 第二室保持单次供应新鲜的调色剂颗粒，其定期计量到第一室。 第二个室被完全封闭和密封，使得第二个室中的调色剂供应不能被补充。 第二室中的板搁置在调色剂供应的顶部，并且当调色剂供应被输送到第一室时，将调色剂向下推动在室中。 当调色剂供应被排出时，板将用于调色剂的通道从第二室阻挡到第一室。 因此，如果在第二室的顶部形成开口，并且通过开口将新的调色剂供应到室，则该板防止新调色剂供给到第一室。 因此，板防止可能与第二室中的载体颗粒不相容的调色剂的新供应被用于显影台。