公开(公告)号：US5223898A

公开(公告)日：1993-06-29

申请号：US540640

申请日：1990-06-19

申请人： Jiro Fujii ,  Yasuaki Tamura ,  Kazuhisa Kondo ,  Hidekazu Shono

发明人： Jiro Fujii ,  Yasuaki Tamura ,  Kazuhisa Kondo ,  Hidekazu Shono

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing apparatus is used for developing a photoconductive drum in a copying machine. The developing apparatus comprises a following developing roller for developing said photoconductive drum, an opposing developing roller for developing a photoconductive drum before the following developing roller, a supply mechanism for supplying developer to the developing rollers, a developer-quantity-regulator plate disposed between the following developing roller and the supply mechanism, and a limiting plate for limiting the length of the magnetic brush formed on the following developing roller. The distance between the photoconductive drum and the opposing developing roller is larger than the distance between the photoconductive drum and the following developing roller. The regulator plate is disposed apart from the developing rollers at a distance longer than the length of their magnetic brushes. The distance between the following developing roller and the limiting plate is within the length of the magnetic brush formed when the following developing roller starts rotating and the length of the magnetic brush formed when the following developing roller rotates at a constant speed.

摘要翻译： 显影装置用于在复印机中显影感光鼓。 显影装置包括用于显影所述感光鼓的后续显影辊，用于在随后的显影辊之前显影感光鼓的相对的显影辊，用于向显影辊供应显影剂的供应机构，设置在显影辊之间的显影剂量调节板 随后的显影辊和供给机构，以及用于限制形成在随后显影辊上的磁刷的长度的限制板。 感光鼓和相对的显影辊之间的距离大于感光鼓和随后的显影辊之间的距离。 调节板与显影辊分开设置，距离它们的磁刷的长度长。 随后的显影辊和限位板之间的距离在随后的显影辊开始旋转时形成的磁刷的长度以及随后的显影辊以恒定速度旋转时形成的磁刷的长度。