EP 0272611 B1 19920819 - MAGNETIC BRUSH DEVELOPMENT APPARATUS HAVING A GATING AND METERING MECHANISM
Title (en)
MAGNETIC BRUSH DEVELOPMENT APPARATUS HAVING A GATING AND METERING MECHANISM
Publication
Application
Priority
- US 7027587 A 19870706
- US 94489586 A 19861222
Abstract (en)
[origin: EP0272611A2] A development station (10) has a sump (14) for developer material, and a magnetic brush (18) that applies developer material to a photoconductor (16). A rotatable transport roller (40) is located between the sump and the magnetic brush. A magnet (44) in the roller attracts developer material to the roller. A cylindrical tube (46) is positioned around the roller and spaced from it. The tube has two slots (48, 50), and the tube is rotatable between two positions. In a first position of the tube developer material can pass through one of the slots (48) to the roller and is transported to the second slot (50) where it is metered to the magnetic brush. In a second position of the tube the slots are offset from the sump and the brush to block the flow of developer material to the transport roller and to the magnetic brush.
IPC 1-7
IPC 8 full level
G03G 15/08 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP)
G03G 15/0822 (2013.01); G03G 15/09 (2013.01)
Citation (examination)
PATENT ABSTRACTS OF JAPAN, vol. 6 no. 156 (P135)(1034), 17th August 1982; & JP-A-5772163
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0272611 A2 19880629; EP 0272611 A3 19890614; EP 0272611 B1 19920819; DE 3781258 D1 19920924; DE 3781258 T2 19930325; JP H0614227 B2 19940223; JP S63167388 A 19880711
DOCDB simple family (application)
EP 87118689 A 19871216; DE 3781258 T 19871216; JP 32116387 A 19871218