EP 0777158 A1 19970604 - Developing device
Title (en)
Developing device
Title (de)
Entwicklungsgerät
Title (fr)
Dispositif de développement
Publication
Application
Priority
JP 30962395 A 19951129
Abstract (en)
A developing device is equipped with a toner detecting means capable of correctly detecting whether an adequate amount of a magnetic toner is present or not. The toner detecting means comprises a permeability detector (82) having a permeability detection surface (86) exposed to a predetermined region, a periodically flowing means (88) for periodically flowing the toner present in the predetermined region to the permeability detection surface (86) of the permeability detector, and a determination means (98) for analyzing an output signal from the permeability detector. <IMAGE>
IPC 1-7
IPC 8 full level
G01N 27/72 (2006.01); G03G 15/08 (2006.01)
CPC (source: EP KR)
G03G 15/0856 (2013.01 - EP KR); G03G 15/086 (2013.01 - EP); G03G 15/0877 (2013.01 - KR); G03G 15/0893 (2013.01 - EP); G03G 21/0058 (2013.01 - KR); G03G 2215/083 (2013.01 - EP); G03G 2215/0888 (2013.01 - KR); G03G 2221/0089 (2013.01 - KR)
Citation (applicant)
JP H0756384 A 19950303 - MITA INDUSTRIAL CO LTD
Citation (search report)
- [XA] US 5317369 A 19940531 - NAKANISHI KEIICHI [JP]
- [A] EP 0486253 A2 19920520 - FUJITSU LTD [JP]
- [A] EP 0506423 A2 19920930 - FUJITSU LTD [JP]
- [A] EP 0672962 A2 19950920 - MITA INDUSTRIAL CO LTD [JP]
- [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 167 (P - 861) 20 April 1989 (1989-04-20)
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 489 (P - 1433) 9 October 1992 (1992-10-09)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0777158 A1 19970604; CN 1158440 A 19970903; JP H09152766 A 19970610; KR 970028903 A 19970624
DOCDB simple family (application)
EP 96308364 A 19961119; CN 96120756 A 19961128; JP 30962395 A 19951129; KR 19960056465 A 19961122