EP 0380626 B1 19940302 - Developer mix monitoring for replaceable developer stations.
Title (en)
Developer mix monitoring for replaceable developer stations.
Title (de)
Entwicklermischungssteuerung für austauschbare Entwicklereinheiten.
Title (fr)
ContrÔle de mélange de révélateur pour postes de révélateur remplaçables.
Publication
Application
Priority
- US 21496788 A 19880705
- US 21597188 A 19880707
Abstract (en)
[origin: WO9000728A1] A toner monitor (125) in an electrostatographic machine is automatically calibrated when a new replaceable development station (10) is loaded into the machine. The detected toner concentration in the development station is used by the monitor as a reference signal against which future readings are compared. The reference signal is reset upon machine power-up to correspond to the detected toner concentration in the development station (10), but only when there is a fresh development station in the machine. Resetting the reference signal only when there is a fresh development station prevents erroneous reference signals which would result if the developer mix concentration was other than perfect at power-down.
IPC 1-7
IPC 8 full level
G03G 15/08 (2006.01)
CPC (source: EP)
G03G 15/0849 (2013.01); G03G 15/0853 (2013.01); G03G 15/0896 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9000728 A1 19900125; DE 68913503 D1 19940407; DE 68913503 T2 19940728; EP 0380626 A1 19900808; EP 0380626 B1 19940302; JP H03501658 A 19910411
DOCDB simple family (application)
US 8902861 W 19890627; DE 68913503 T 19890627; EP 89908306 A 19890627; JP 50801989 A 19890627