DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
First Claim
1. A developing device comprising:
- a first developer conveyance path and a second developer conveyance path for conveying and circulating a two-component developer including a toner and a magnetic carrier;
a first communicating path for guiding the two-component developer in the first developer conveyance path to the second developer conveyance path;
a second communicating path for guiding the two-component developer in the second developer conveyance path to the first developer conveyance path;
a first conveyance member being provided in the first developer conveyance path in a freely rotatable manner for conveying the two-component developer in one direction;
a second conveyance member being provided in the second developer conveyance path in a freely rotatable manner for conveying the two-component developer in one direction;
a developing roller for bearing and supplying the two-component developer in the first developer conveyance path to a photoconductor drum;
a developer collection path for guiding the two-component developer left on a surface of the developing roller after the developer is supplied to the photoconductor drum and used for the development in a direction away from the first developer conveyance path;
a third developer conveyance path for containing the two-component developer guided to the developer collection path and conveying the developer in one direction;
a third conveyance member being provided in the third developer conveyance path in a freely rotatable manner;
a toner supply port for supplying new toner to the third developer conveyance path;
a developer drawing and conveyance path for guiding the two-component developer supplied with the new toner in the third developer conveyance path to the second developer conveyance path; and
a developer drawing member being provided in the developer drawing and conveyance path in a freely rotatable manner for simultaneously agitating and conveying the two-component developer in one direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A developing device comprises a first and a second developer conveyance path; a first conveyance member; a second conveyance member; and, a developing roller. A developer collection path guides the developer left on a surface of the developing roller in a direction away from the first developer conveyance path. A third conveyance member is provided in a third developer conveyance path. A toner supply port supplies new toner to the third developer conveyance path. A developer drawing and conveyance path guides the developer supplied with the new toner to the second developer conveyance path. A developer drawing member is provided in the developer drawing and conveyance path for simultaneously agitating and conveying the developer.
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Citations
11 Claims
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1. A developing device comprising:
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a first developer conveyance path and a second developer conveyance path for conveying and circulating a two-component developer including a toner and a magnetic carrier; a first communicating path for guiding the two-component developer in the first developer conveyance path to the second developer conveyance path; a second communicating path for guiding the two-component developer in the second developer conveyance path to the first developer conveyance path; a first conveyance member being provided in the first developer conveyance path in a freely rotatable manner for conveying the two-component developer in one direction; a second conveyance member being provided in the second developer conveyance path in a freely rotatable manner for conveying the two-component developer in one direction; a developing roller for bearing and supplying the two-component developer in the first developer conveyance path to a photoconductor drum; a developer collection path for guiding the two-component developer left on a surface of the developing roller after the developer is supplied to the photoconductor drum and used for the development in a direction away from the first developer conveyance path; a third developer conveyance path for containing the two-component developer guided to the developer collection path and conveying the developer in one direction; a third conveyance member being provided in the third developer conveyance path in a freely rotatable manner; a toner supply port for supplying new toner to the third developer conveyance path; a developer drawing and conveyance path for guiding the two-component developer supplied with the new toner in the third developer conveyance path to the second developer conveyance path; and a developer drawing member being provided in the developer drawing and conveyance path in a freely rotatable manner for simultaneously agitating and conveying the two-component developer in one direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification