EP 0557925 A1 19930901 - Development unit and image forming apparatus having the same.
Title (en)
Development unit and image forming apparatus having the same.
Title (de)
Entwicklungsvorrichtung und damit ausgerüstetes Bilderzeugungsgerät.
Title (fr)
Dispositif de développement et appareil de formation d'images avec le même.
Publication
Application
Priority
JP 3606892 A 19920224
Abstract (en)
A development unit comprises a photosensitive body (15) for bearing a latent image, a process unit for forming the latent image on the photosensitive body (15), a developer supporting member (42) rotatably arranged opposite to the photosensitive body (15) and cylindrically formed by a thin plate (42b) having meshes (42a), a fur brush roller (44) formed in contact with the inner surface of the developer supporting member (42) for transporting the developer, a casing (47) for guiding the developer transported by the fur brush roller (44) to charge the developer by friction between the fur brush roller (44) and the casing, and a voltage applying mechanism (49) for applying, to the developer supporting member (42), a voltage which allows the developer to pass through the meshes (42a) and is lower than a voltage enough to supply the developer from the meshes (42a) to the photosensitive body (15) and supplying the developer transported by the fur brush roller (44) from the meshes (42a) to the photosensitive body (15) by physical pressure. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 15/06 (2006.01); G03G 15/08 (2006.01)
CPC (source: EP)
G03G 15/08 (2013.01); G03G 15/0805 (2013.01); G03G 15/0806 (2013.01)
Citation (search report)
- [A] US 4876573 A 19891024 - KAMIMURA TAISUKE [JP]
- [A] EP 0469902 A2 19920205 - MITA INDUSTRIAL CO LTD [JP]
- [A] US 3893413 A 19750708 - WEILER ERNEST A H
- [A] EP 0306044 A2 19890308 - MINOLTA CAMERA KK [JP]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 93102742 A 19930222; JP 3606892 A 19920224