EP 0628892 B1 19970115 - Magnetic brush development apparatus with take-off skive
Title (en)
Magnetic brush development apparatus with take-off skive
Title (de)
Magnetbürstentwicklungsgerät mit Abstreifblatt
Title (fr)
Appareil de développement à brosse magnétique avec lame de raclage
Publication
Application
Priority
- EP 91900454 A 19901126
- US 44420989 A 19891201
- US 44421089 A 19891201
- US 44425689 A 19891201
- US 44425789 A 19891201
- US 44425889 A 19891201
Abstract (en)
[origin: WO9108523A1] A development apparatus (10) includes a housing (14) having a portion defining a sump (S) adapted to contain a supply of developer material, and a magnetic brush (36) located substantially within the housing (14) in spaced relation to the sump portion (S) for applying developer material to the latent image. A feed mechanism (60) including a metering assembly (50) located within the housing (14) between the sump portion (S) and the magnetic brush (36) transports developer material from the sump (S) to the magnetic brush (36) and a mechanism (26) located in the sump portion (S) agitates developer material and transports developer material to the feed mechanism (60). A take-off skive (74) for stripping development material from the magnetic brush (36) after application to a latent image and directing such material to the sump portion (S) is mounted so that the skive (74) is self-adjustably supported between the metering assembly (50) and the magnetic brush (36). Further, developer material in the sump portion (5) is replenished by a device (70) which includes a reservoir (72) for replenishment material adjacent to the pump portion (S) a flow communication path (18a) between the reservoir (72) and the sump portion (S) and a selectively rotatable roller (90) located relative to the path to control flow of replenishment material through the path. The entrance to the path is configured to engage the roller (90) such that the set up latitude between the roller and path is increased. Measuring the level of replenishment material in the reservoir is facilitated by the material monitor (94) located in the bottom of the reservoir (72) immediately upstream of the flow communication path, the surface of the monitor (94) being periodically swept to assure accurate measurement of replenishment material level. Still further, a shield (44) is located upstream of the development zone between the housing and the image carrying member (12) for containing developer material within the development zone to substantially prevent escape of airborne particulate material from the apparatus (10).
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 15/0877 (2013.01); G03G 15/0896 (2013.01); G03G 15/09 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9108523 A1 19910613; DE 69021045 D1 19950824; DE 69021045 T2 19960321; DE 69029749 D1 19970227; DE 69029749 T2 19970731; DE 69030203 D1 19970417; DE 69030203 T2 19971002; EP 0456800 A1 19911121; EP 0456800 B1 19950719; EP 0628889 A1 19941214; EP 0628889 B1 19970312; EP 0628890 A1 19941214; EP 0628892 A1 19941214; EP 0628892 B1 19970115; JP 2989006 B2 19991213; JP H04503268 A 19920611
DOCDB simple family (application)
US 9006786 W 19901126; DE 69021045 T 19901126; DE 69029749 T 19901126; DE 69030203 T 19901126; EP 91900454 A 19901126; EP 94113290 A 19901126; EP 94113291 A 19901126; EP 94113292 A 19901126; JP 50108191 A 19901126