Title:
IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP3041173
Kind Code:
B2
Abstract:
PURPOSE: To obtain an image in which roughness is eliminated in the area of highlight and half-tone density, the image density is increased, and moreover, the carrier adhesion is reduced by reducing the size of magnetization per unit volume of the magnetic carrier, in the image forming device using a two- component developer.
CONSTITUTION: Inside the photoreceptor drum 3, the magnet 31 having the same polarity as the developing polarity is arranged in the direction at the angle of 5-10° from the opposing part to the developing main magnet 231 placed in the nearest part between the developing sleeve 23 and the photoreceptor drum 3 on the upstream side in the rotational direction from the photoreceptor drum 3. Thus, the increasing rate of the absolute value of the magnetic field strength in the two-component developer transporting direction at the opposing part between the photoreceptor drum 3 and the developing sleeve 23 is made positive.
Inventors:
Masaru Hibino
Kenichiro Waki
Yukio Nagase
Hiroyuki Suzuki
Kenichiro Waki
Yukio Nagase
Hiroyuki Suzuki
Application Number:
JP27000093A
Publication Date:
May 15, 2000
Filing Date:
October 01, 1993
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/385; G03G15/06; G03G15/09; (IPC1-7): G03G15/09
Domestic Patent References:
| JP34262A | ||||
| JP2176686A | ||||
| JP460647A | ||||
| JP59182464A | ||||
| JP4284472A | ||||
| JP519601A | ||||
| JP258261U |
Attorney, Agent or Firm:
Akira Kurahashi
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