EP 0405694 A3 19910605 - DEVELOPING METHOD USING TWO-COMPONENT TYPE DEVELOPER
Title (en)
DEVELOPING METHOD USING TWO-COMPONENT TYPE DEVELOPER
Publication
Application
Priority
JP 16695289 A 19890630
Abstract (en)
[origin: EP0405694A2] In a developing method comprising delivering a two-component type developer (18) comprising a magnetic carrier and a toner and developing an electrostatic latent image on a photosensitive drum (15), the developing conditions are set so that the degree (R) of substitution of the developer, which is the ratio of substitution of the volume of the developing zone by a fresh carrier/toner aggregate (developer) during the developing time, is within a specific range of from 16.00 to 33.00%. According to this developing method, in the reproduction of multiple fine lines, the line width is kept constant in each line and front end lacking or rear end lacking can be prevented, and an image having a high density and a high quality can be formed with an excellent image reproducibility.
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 13/09 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP)
G03G 9/08 (2013.01); G03G 13/09 (2013.01)
Citation (search report)
- [Y] US 4702987 A 19871027 - FUKUCHI MASAKAZU [JP], et al
- [Y] US 4394432 A 19830719 - NISHIKAWA MASAJI [JP]
- [A] EP 0219233 A2 19870422 - CANON KK [JP]
- [A] PATENT ABSTRACTS OF JAPAN, vol. 12, no. 210 (P-717)[3057], 16th June 1988; & JP-A-63 8771 (CANON) 14-01-1988
- [AD] PATENT ABSTRACTS OF JAPAN, vol. 12, no. 499 (P-807)[3346], 27th December 1988; & JP-A-63 208 867 (MINOLTA) 30-08-1988
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0405694 A2 19910102; EP 0405694 A3 19910605; EP 0405694 B1 19941005; DE 69013073 D1 19941110; DE 69013073 T2 19950302; JP H0333868 A 19910214; JP H0778652 B2 19950823
DOCDB simple family (application)
EP 90201738 A 19900629; DE 69013073 T 19900629; JP 16695289 A 19890630