Title:
IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP3733301
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image forming device by which an excellent image without having the deterioration of image density is formed over a long term by preventing the incorporation of magnetic carrier to a one-component developing device as an image forming device in which the one-component developing device and a two-component developing device are arranged for one image carrier.
SOLUTION: In the image forming device in which a developing device having one-component developer incorporating the magnetic carrier as developer and a developing device having two-component developer incorporating non-magnetic toner particles and the magnetic carrier as developer are arranged for the one image carrier, the magnetic carrier and magnetic toner particles satisfy the expression of 30<Cσ1000<Mσ1000×1.8 when the intensity of the magnetization of the magnetic carrier by the external magnetic field of 79.58 kA/m is set as Cσ1000 [Am2/kg] and that of the magnetic toner particles is set as Mσ1000 [Am2/kg].
Inventors:
Bessho Yuji
Application Number:
JP2001198393A
Publication Date:
January 11, 2006
Filing Date:
June 29, 2001
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G9/10; G03G5/08; G03G9/083; G03G9/087; G03G13/09; G03G15/01; G03G15/08; G03G21/10; (IPC1-7): G03G9/10; G03G5/08; G03G9/083; G03G9/087; G03G15/01; G03G15/08; G03G21/10
Domestic Patent References:
| JP7319367A | ||||
| JP5027547A | ||||
| JP7152304A | ||||
| JP8114986A | ||||
| JP2181181A | ||||
| JP59501840A | ||||
| JP7319216A | ||||
| JP2001034067A | ||||
| JP10161386A | ||||
| JP5307741A |
Attorney, Agent or Firm:
Kazunobu Sera
Yoshiyuki Kawaguchi
Mayuko Wakuda
Yoshiyuki Kawaguchi
Mayuko Wakuda