DEVELOPING DEVICE AND IMAGE FORMING DEVICE
A developing device includes: a housing unit that has an opening and houses a developer; a conveying member that is installed within the housing unit and conveys the developer; a first rotating member that has an outer peripheral surface to which the developer conveyed by the conveying member adheres; a regulating unit that protrudes above a movement path of the developer that adheres to the outer peripheral surface and moves due to rotation of the first rotating member, and regulates movement of some of the developer on the outer peripheral surface; and a second rotating member that is installed in the opening and has supplied thereto the developer that has moved through a gap between the first rotating member and the regulating unit.
1 . A developing device comprising:
a housing unit that has an opening and houses a developer;
a conveying member that is installed within the housing unit and conveys the developer;
a first rotating member that has an outer peripheral surface to which the developer conveyed by the conveying member adheres;
a regulating unit that protrudes above a movement path of the developer that adheres to the outer peripheral surface and moves due to rotation of the first rotating member, and regulates movement of some of the developer on the outer peripheral surface; and
a second rotating member that is installed in the opening and has supplied thereto the developer that has moved through a gap between the first rotating member and the regulating unit.
2 . The developing device according to claim 1 ,
wherein the regulating unit is installed at an opposite side of the first rotating member to a side where the second rotating member is installed.
3 . The developing device according to claim 1 ,
wherein a regulating surface, which regulates the movement of the developer, of the regulating unit is arranged with there being a gap between the regulating surface and the outer peripheral surface of the first rotating member, and extends in a direction away from the outer peripheral surface.
4 . The developing device according to claim 1 ,
wherein the first rotating member is formed in a cylindrical shape,
a magnetic pole for causing the developer to adhere to the outer peripheral surface of the first rotating member is provided at an inner side of the first rotating member, and
the regulating unit is arranged in a position opposing the magnetic pole with the first rotating member therebetween.
5 . The developing device according to claim 1 ,
wherein a regulating surface, which regulates the movement of the developer, of the regulating unit faces downward.
6 . The developing device according to claim 1 ,
wherein the developer that has had the movement thereof regulated by the regulating unit drops and is supplied to the conveying member.
7 . The developing device according to claim 6 ,
wherein the regulating unit and the conveying member are provided in such a way that the regulating unit and the conveying member overlap when the regulating unit and the conveying member are viewed from above or below in a vertical direction.
8 . The developing device according to claim 1 ,
further comprising a guide surface that is arranged between the second rotating member and the first rotating member, and guides to the second rotating member the developer that has moved through a gap between the first rotating member and the regulating unit.
9 . The developing device according to claim 8 ,
wherein the developer that has moved while being guided by the guide surface accumulates in a region located between an outer peripheral surface of the second rotating member and the guide surface.
10 . The developing device according to claim 9 ,
wherein there is a gap between the guide surface and the first rotating member.
11 . The developing device according to claim 8 ,
wherein the guide surface is installed at an opposite side of the first rotating member to a side where the regulating unit is installed.
12 . A developing device comprising:
a housing unit that has an opening and houses a developer;
a conveying member that is installed within the housing unit and conveys the developer;
a first rotating member that has an outer peripheral surface to which the developer conveyed by the conveying member adheres;
a regulating surface that is arranged with there being a gap between the regulating surface and the outer peripheral surface of the first rotating member, extends in a direction away from the outer peripheral surface, and regulates movement of some of the developer that has adhered to the outer peripheral surface; and
a second rotating member that is installed in the opening and has supplied thereto the developer that has moved through the gap located between the outer peripheral surface and the regulating surface.
13 . An image forming device comprising:
an image carrier that carries an image;
a developing device that causes a developer to adhere to the image carrier and forms an image on a surface of the image carrier; and
a transfer unit that transfers the image formed on the surface of the image carrier to a recording material,
wherein the developing device is constituted by the developing device according to claim 1 .