Image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorsKanehiro Watanabe, Junichi Koiso, Yasushi Koshimura
Life of this patent
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Abstract
An image forming apparatus includes: an image carrier with an electrostatic latent image formed thereon; a developing device for developing the electrostatic latent image into a toner image, a developer carrier arranged opposite to the image carrier, for allowing the magnetic brush formed by a developer, to be carried on the outer circumferential surface; a magnetic field generation member arranged inside the developer carrier, for forming the magnetized area of the magnetic brush in a predetermined area in the axial direction of the developer carrier; and a scattered toner sucking port arranged at a position other than a position opposite to the magnetized area of the developer carrier.
Claims13
An image forming apparatus comprising:
- (a) an image carrier on which a latent image is formed;
- (b) a developing device for developing the latent image to form a toner image, comprising:
- (1) a developer carrier provided opposite to the image carrier for carrying a magnet brush formed by a developer on an outer circumferential surface thereof, and
- (2) a magnetic field generating member provided inside the developer carrier for generating a magnetized area of the magnetic brush in a predetermined area in an axis direction on the developer carrier;
- and
- (c) a scattered toner sucking port provided in a position other than a position opposite to the magnetized area for sucking a scattered toner.
An image forming apparatus comprising:
- (a) an image carrier on which a latent image is formed;
- (b) a developing device for developing the latent image to form a toner image, comprising:
- (1) a developer carrier provided opposite to the image carrier for carrying a magnet brush formed by a developer on an outer circumferential surface thereof,
- (2) a magnetic field generating member provided inside the developer carrier for generating a magnetized area of the magnetic brush in a predetermined area on the developer carrier in an axis direction thereof,
- (3) an opening portion formed at a position on the developing device in the vicinity of both ends of the developer carrier in an axis direction thereof, and other than a position opposite to the magnetized area, and
- (4) a first sealing member provided downstream of a developing position at which a toner is transferred from the developer carrier onto the image carrier, in a rotary direction of the developer carrier, and on a part of the developing device between the developer carrier and the opening portion, for coming into soft contact with the outer circumferential surface,
- wherein the first sealing member has a length shorter than that of developer carrier in the axis direction thereof and capable of covering at least a part of each of the opening portions;
- and
- (c) a scattered toner sucking port provided in the vicinity of each of the opening portion of the developing device.
Dependencies are inferred from the claim text.