Patent application number | Description | Published |
20110103848 | DEVELOPMENT AGENT SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A development agent supply device is provided, which includes a development agent holding member configured to rotate around an axis parallel to a first direction such that a development agent holding surface, which faces an intended device to be supplied with development agent in a first position, moves in a second direction perpendicular to the first direction, a transfer board configured to charge and transfer development agent thereon to a second position to face the development agent holding surface, and a facing member disposed to face the development agent holding surface in a position between the first position and the second position in the second direction, the facing member being configured to charge development agent held on the development agent holding surface under an alternating electric field generated between the facing member and the development agent holding member. | 05-05-2011 |
20110236078 | Developer Supply Device and Image Forming Apparatus Having the Same - A developer supply device includes a developer-carrying body having a developer-carrying surface that faces an intended device in a first position and moves in a moving direction, a first transfer board that faces the developer-carrying surface in a second position upstream relative to the first position in the moving direction and transfers the developer to the second position in a direction opposite to the moving direction in the second position, an electrification member facing the developer-carrying surface in a third position downstream relative to the second position and upstream relative to the first position in the moving direction, and a second transfer board that faces the developer-carrying surface in a fourth position downstream relative to the first position and upstream relative to the second position in the moving direction and transfers the developer to a developer storage section in a direction identical to the moving direction in the fourth position. | 09-29-2011 |
20110311266 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes side seal members each of which is disposed to extend across a casing-side facing portion of a casing and a supporting-member-side facing portion of a board supporting member, the casing-side facing portion and the supporting-member-side facing portion facing one of both ends of a developer carrying surface in a first direction, the developer carrying surface being a cylindrical circumferential surface of a roller main body which surface is formed parallel to the first direction to carry development agent thereon. Each of the side seal member is configured to slide in contact with one of both ends of the developer carrying surface in the first direction while filling in a gap between the casing and one of both ends of the roller main body in the first direction. | 12-22-2011 |
20120076552 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device configured to supply charged development agent to an intended device, includes a carrying assist member disposed, apart from a developer transfer path, to face a developer carrying surface of a developer carrying member at an upstream side relative to a developer carrying position, in which a transfer board is opposite and in closest proximity to the developer carrying surface, in a direction in which the developer carrying surface moves when the developer carrying member is driven to rotate. The carrying assist member is configured to, when a predetermined voltage is applied thereto, generate an electric field, under which the charged development agent heads for the developer carrying surface, between the carrying assist member and the developer carrying member. | 03-29-2012 |
20130188995 | DEVELOPER SUPPLY DEVICE - A developer supply device configured to supply developer is provided. The developer supply device includes a rotatable developer carrying body configured to carry the developer, a casing configured to rotatably support the developer carrying body, and a restricting member configured to contact the developer carrying body to remove a part of the developer. The casing has a collecting side developer storage room configured to store the developer removed by the restricting member and a supplying side developer storage room configured to store the developer to be supplied to the brush layer. A supplying side developer storage level, which is a storage level of the developer in the supplying side developer storage room, is higher than a collecting side developer storage level, which is a storage level of the developer in the collecting side developer storage room. | 07-25-2013 |
20130243497 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided that includes an electric-field transfer board having transfer electrodes arranged along a developer transfer path so as to transfer development agent from a developer storage section along the developer transfer path when a multi-phase alternating-current voltage is applied to the transfer electrodes, a brush roller disposed to face an intended device in a developer supplying position and face the electric-field transfer board in a developer carrying position so as to receive the development agent from the electric-field transfer board and supply the received development agent to the intended device, and a regulating member disposed to contact the brush roller in a position between the developer carrying position and the developer supplying position so as to regulate an amount of the development agent on the brush roller. | 09-19-2013 |
Patent application number | Description | Published |
20090245901 | Thermal Fixing Unit Having Pivotally Movable Pressure Pad and Image Forming Device Provided with the Same - There is provided a thermal fixing unit that fixes a toner image on a printing medium, the fixing unit including a heat member, a pressure pad, a movable supporting assembly, and an urging member. The heat member is in contact with the printing medium, being positionally fixed and defining an axis. The pressure pad is disposed in opposition to the heat member for nipping the printing medium in cooperation with the heat member. The supporting assembly pivotably movably supports the pressure pad. The urging member biases the supporting assembly to urge the pressure pad toward the heat member for providing pressure contact between the heat member and the pressure pad. | 10-01-2009 |
20140178093 | Developing Device, Process Cartridge and Image Forming Apparatus - A developing device includes a casing configured to accommodate developer, a developing roller, a seal member, at least portion of which is disposed between the developing roller and the casing, and which includes a fabric member including a plurality of first fibers extending in a first direction, and a heat radiation member configured to contact end surfaces of the first fibers of the seal member and radiate heat of the seal member. | 06-26-2014 |
20140376954 | Developing Device - A developing device includes a casing configured to accommodate developer, a developing roller, a seal member, at least a portion of which is disposed between the developing roller and the casing, the seal member including a fabric member having plural fibers extending in a first direction and plural second fibers extending in a second direction, wherein the plural first fibers and the plural second fibers are intersecting each other, and each of the fibers of the fabric member include a circumferential surface which has a first heat radiation amount per unit area, and an end surface having a second heat radiation amount per unit area larger than the first heat radiation amount, and a heat radiation member disposed at an end portion of the seal member in an axial direction of the developing roller and is configured to contact the end surfaces of the fibers. | 12-25-2014 |