Abstract: A developer charging unit comprises a developer charging member for charging developer bore by a developer bearing member by abutting against the developer bearing member; a supporting member for supporting the developer charging member; and a plurality of fixing portions for fixing the developer charging member and the supporting member together, the fixing portions being lined up according to a predetermined arrangement. A spacing between two of the fixing portions located in a central section in a longitudinal direction of the developer charging member is shorter than a spacing between two of the fixing portions located at an end section in the longitudinal direction of the developer charging member.

Abstract: A developer carrier for carrying a developer, the developer carrier comprises: an opposing region that opposes a latent image-carryable region on an image carrier, and a solid portion that is solid at an end portion of the developer carrier in a longitudinal direction thereof; wherein an end of the solid portion, which is on a side of a center of the developer carrier in the longitudinal direction, is located closer to the center of the developer carrier than an edge of the opposing region.

Abstract: A developing device is provided with: a developer containing section that is for containing a developer and that has a predetermined coefficient of thermal expansion; a developing roller for bearing the developer contained in the developer containing section; a roller-supporting member that is for rotatably supporting the developing roller, that has a coefficient of thermal expansion which is different from the coefficient of thermal expansion of the developer containing section, and that is structured by connecting at least three members; and a gap for preventing the roller-supporting member and the developer containing section from interfering with one another when the roller-supporting member and the developer containing section expand/contract due to a change in temperature.

Abstract: A developer containing device is provided with a housing that includes a first housing section and a second housing section and that is configured to contain a developer. A protrusion provided on the first housing section and a recess provided in the second housing section are welded together through vibration welding in a state where the protrusion is fitted into the recess. An outer wall of the recess is thicker than an inner wall of the recess.

Abstract: A developing cartridge 12 includes a housing 43 which has a peripheral surface and two end faces formed on both sides of the peripheral surface, and a toner containing space 45 which is formed in the housing and which contains toner 47 therein. A communication hole 61 is formed on a periphery surface of the developing cartridge 12. The communication hole 61 is sealed by a sticker 63 which has minute holes for allowing air to flow and preventing the toner 47 from passing through.

Abstract: A connector with a built-in memory IC which is mounted on a rotary development unit of a printer. The memory IC substrate is disposed within a contact protecting member and behind the rear side of an impact receiving member. A first electric contact is disposed on the front side of the impact receiving member and is connected to a second electric contact via a conductive member. The second electric contact spring contacts the memory IC substrate. The connector contains guide members to help stabilize the connection between the connector and the body side connector of the printer.

Abstract: A developing device is provided with a developer containing section for containing developer; a developing roller for bearing the developer; a restriction blade for restricting the developer bore by the developing roller; an end seal for preventing the developer from spilling through a gap between an end of the restriction blade and the developer containing section and for preventing the developer from spilling through a gap between an end of the developing roller and the developer containing section; and a seal-assisting member for pressing the end seal against the end surface of the restriction blade.

Abstract: A developing device comprises: a developer container for containing developer; a developer bearing member that is provided at a lower section of the developer container and is capable of bearing and carrying the developer; a developer supplying member that is provided at a lower section of the developer container, is capable of abutting against the developer bearing member at an abutting section, and is capable of supplying the developer to the developer bearing member; and a flow-path restricting member that is capable of restricting a flow path of the developer contained in the developer container. The flow path leads from right above the abutting section to the abutting section.

Abstract: A developing device includes: a developer container for containing developer; a developer bearing body for bearing the developer; a charging member for charging the developer bore by the developer bearing body by abutting against the developer bearing body; a supporting member for supporting the charging member; and a sealing member that is for preventing the developer from spilling from the developer container and that is provided in a state in which the side of one end thereof is compressed by the developer container and the charging member and the side of the other end thereof is compressed by the developer container and the supporting member, wherein a degree of compression of the sealing member on the side of the other end is smaller than a degree of compression of the sealing member on the side of one end.

Abstract: A developing device includes a toner supporter for supporting toner, a toner supply member being pressed against the toner supporter to supply the toner to the toner supporter and a thickness regulation member for regulating thickness of the toner supplied to the toner supporter by the toner supply member. The thickness regulation member abuts the toner supporter on the toner supply member side of the toner supporter.

Abstract: A developer charging unit comprises a developer charging member for charging developer bore by a developer bearing member by abutting against the developer bearing member; a supporting member for supporting the developer charging member; and a plurality of fixing portions for fixing the developer charging member and the supporting member together, the fixing portions being lined up according to a predetermined arrangement. A spacing between two of the fixing portions located in a central section in a longitudinal direction of the developer charging member is shorter than a spacing between two of the fixing portions located at an end section in the longitudinal direction of the developer charging member.

Abstract: A developing device includes a toner supporter for supporting toner, a toner supply member being pressed against the toner supporter to supply the toner to the toner supporter and a thickness regulation member for regulating thickness of the toner supplied to the toner supporter by the toner supply member. The thickness regulation member abuts the toner supporter on the toner supply member side of the toner supporter.

Abstract: A developing device comprises: a developer container for containing developer; a developer bearing member that is provided at a lower section of the developer container and is capable of bearing and carrying the developer; a developer supplying member that is provided at a lower section of the developer container, is capable of abutting against the developer bearing member at an abutting section, and is capable of supplying the developer to the developer bearing member; and a flow-path restricting member that is capable of restricting a flow path of the developer contained in the developer container. The flow path leads from right above the abutting section to the abutting section.

Abstract: The first invention comprises an impact receiving member (41); a first electric contact (43a, 44a) which is disposed on the front side of the impact receiving member; a memory IC substrate (46) which is disposed on and apart from the rear side of the impact receiving member; and a second electric contact (43b, 44b) which is configured by bringing a conductive member extending from the first electric contact into contact with a terminal of the memory IC substrate.

Abstract: A toner cartridge includes an inner tubular container having a toner discharge opening and accommodating a toner; an outer tubular case having a toner passage opening corresponding to the toner discharge opening, and being fitted around the inner tubular container relatively rotatably; and a seal member having a sealing portion for covering the toner discharge opening, the sealing portion being strippably bonded to the outer peripheral surface of the inner tubular container, and an action portion formed as a continuum of the sealing portion and having a front end part secured to the outer tubular case. The sealing portion of the seal member has a longitudinal bond portion and a peripheral bond portion defined along the surroundings of the toner discharge opening, and a cut groove provided inwardly of the peripheral bond portion at the peel start side end part thereof.

Abstract: At least a pair of metal rolls having different peripheral speeds with each other are removably mounted to respective rotary shafts in a cantilever form. The axial length of each of the metal rolls is between 100 and 500 mm and the peripheral speed of the high speed roll is between 12 and 30 meter/second. A cover is fitted to a milling chamber that houses therein the paired metal rolls and has a transparent member at least as a part thereof. With such an arrangement, the rolls can be replaced with ease and the milling operation carried out in the milling chamber can be easily monitored through the transparent member.