EP 0102038 A3 19840516 - DEVELOPING DEVICE AND DEVELOPING METHOD
Title (en)
DEVELOPING DEVICE AND DEVELOPING METHOD
Publication
Application
Priority
- JP 14880582 A 19820827
- JP 14880782 A 19820827
Abstract (en)
[origin: EP0102038A2] A developing device (18) develops an electrostatic latent image formed on a photosensitive layer of a photosensitive drum (14) by a toner (40) and is provided with a developing roller (36) which rotatably faces the photosensitive layer and is adopted to rotate with the toner (40) thereon forming a toner layer (42), such that the toner (40) is transferred to the photosensitive layer to develop the electrostatic latent image, and a doctor blade (41) which is spaced from the developing roller (36), for regulating the thickness of the toner layer (42) formed on the developing roller (36). The toner (40) consists of an electrically insulating toner whose surface potential (Vt) on the developing roller (36) has polarity opposite to that of changes on the electrostatic latent image and absolute value greater than 20 (volts) and smaller than 90 (volts).
IPC 1-7
IPC 8 full level
G03G 13/09 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP)
G03G 13/09 (2013.01); G03G 15/09 (2013.01)
Citation (search report)
- [Y] DE 2739703 B2 19790816
- [Y] DE 2854825 A1 19790628 - CANON KK
- [Y] GB 2064482 A 19810617 - PITNEY BOWES INC
- [Y] Patent Abstracts of Japan vol. 3, no. 155, 19 December 1979 page 149E160 & JP-A-54 136339
- [Y] Patent Abstracts of Japan vol. 2, no. 149, 13 December 1978 page 9488E78 & JP-A-53 117431
- [Y] Patent Abstracts of Japan vol. 4, no. 39, 28 March 1980 page 64P4 & JP-A-55 011201
- [Y] Patent Abstracts of Japan vol. 4, no. 24, 29 February 1980 page 46E173 & JP-A-54 161944
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 83108180 A 19830818