Claims
- 1. A developing device comprising:a toner carrier, having a magnet therein, for carrying a magnetic toner; a regulating rotary member, having a magnet therein, for regulating an amount of toner on said toner carrier, said regulating rotary member being provided to be spaced apart from the surface of said toner carrier by a predetermined distance; and magnetic field generating means for applying a magnetic force to said regulating rotary member from a side of said regulating rotary member opposite said toner carrier, said magnetic field generating means applying the magnetic force in a direction substantially opposite to a direction of a magnetic force received by said regulating rotary member from the magnet in said toner carrier.
- 2. A device according to claim 1, wherein said magnetic field generating means comprises a magnet which is arranged at a substantially central portion, in an axial direction, of said regulating rotary member.
- 3. A device according to claim 1, wherein a magnetic flux density of the magnetic force applied by said magnetic field generating means increases in a direction from said toner carrier toward said regulating rotary member.
- 4. A device according to claim 1, wherein, in a regulating portion of said regulating rotary member, a rotational direction of said regulating rotary member is opposite to a moving direction of said toner carrier.
Priority Claims (3)
Number |
Date |
Country |
Kind |
5-323162 |
Nov 1993 |
JP |
|
5-323164 |
Nov 1993 |
JP |
|
5-342693 |
Dec 1993 |
JP |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/348,222 filed Nov. 28, 1994, now abandoned.
US Referenced Citations (16)
Foreign Referenced Citations (4)
Number |
Date |
Country |
42-23910 |
Nov 1942 |
JP |
43-24748 |
Oct 1943 |
JP |
52-94140 |
Aug 1977 |
JP |
54-43036 |
Apr 1979 |
JP |
Divisions (1)
|
Number |
Date |
Country |
Parent |
08/755598 |
Nov 1996 |
US |
Child |
09/963853 |
|
US |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/348222 |
Nov 1994 |
US |
Child |
08/755598 |
|
US |
Reissues (1)
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Number |
Date |
Country |
Parent |
08/755598 |
Nov 1996 |
US |
Child |
09/963853 |
|
US |