Patent application number | Description | Published |
20110280620 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process cartridge detachably mountable to a main assembly of the apparatus of an image forming apparatus, the process cartridge includes a first unit provided with a photosensitive drum; and a second unit provided with a developer carrying member and connected with the first unit so as to be movable between a contact position in which the developer carrying member is contacted with the drum and a spacing position in which the developer carrying member is spaced from the drum, and the second unit including a first contact portion for contacting to a main assembly electrical contact provided in the main assembly and for receiving a first contact force therefrom when the process cartridge is mounted to the main assembly and the second unit is positioned in the spacing position, and a second contact portion for contacting to the main assembly electrical contact and for receiving a second contact force therefrom to electrically connect with the main assembly electrical contact when the process cartridge is mounted to the main assembly and the second unit is positioned in the contact position; wherein the second contact force has a component oriented in a moving direction of moving the second unit away from the spacing position toward the contact position, and the component is greater than that of the first contact force. | 11-17-2011 |
20120114377 | PROCESS CARTRIDGE AND DEVELOPING DEVICE - A developing device is detachably mountable to a main assembly of an image forming apparatus and includes a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive member. The developing roller includes an elastic roller portion and a core metal portion for supporting the roller portion; a developing device frame for rotatably supporting the developing roller; a developer layer thickness regulating member, for regulating a layer thickness of a developer carried on the developing roller; and a movement preventing portion for preventing movement of the developing roller in an axial direction, wherein the movement preventing portion is detachably mounted in the developing device and is inserted into a spacing between an end portion of the core metal portion and an opposing portion of the developing device frame. | 05-10-2012 |
20120328324 | CARTRIDGE - A cartridge detachably mountable to a main assembly of an image forming apparatus includes: an accommodating portion for accommodating a developer; a recess provided in an outer wall of a frame for forming the accommodating portion; and a sheet member provided so as to cover the recess. The sheet member and the recess are configured so that an amount of flexure of the sheet member is larger than that of the recess when the cartridge is griped on the sheet member. | 12-27-2012 |
20130272727 | DEVELOPER ACCOMMODATING UNIT, DEVELOPING CARTRIDGE AND IMAGE FORMING APPARATUS - A developer accommodating unit includes a developer accommodating unit formed by a developer accommodating frame and includes an integrally formed light guide member. The light guide member is mounted through the developer accommodating frame in a state in which an incident portion and an emergent portion are exposed through an incident side opening and an emergent side opening, respectively, and is connected with the developer accommodating frame in a sealed state so that an outside and inside of the developer accommodating chamber are prevented from communicating with each other via the incident side opening and the emergent side opening. | 10-17-2013 |
20130308988 | DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A developing device includes a developing chamber, a developer containing chamber located on the lower side of the developing chamber, a partition wall configured to separate the developing chamber and the developer containing chamber, an opening configured to allow the developing chamber and the developer containing chamber to communicate with each other, disposed on the partition wall, a developer conveyance member configured to convey developer from the developer containing chamber to the developing chamber by causing the developer to pass through the opening, disposed on the developer containing chamber. In the developing device, a convex portion which protrudes to the developing chamber side is disposed on the partition wall. | 11-21-2013 |
20130322921 | DEVELOPMENT APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A development apparatus for an image forming apparatus includes | 12-05-2013 |
20140050503 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process cartridge is detachably mountable to a main assembly of an image forming apparatus. The process cartridge includes a first unit provided with an image bearing member and a second unit that is provided with a developer carrying member for carrying a developer, with the second unit being connected with the first unit so as to be movable between a contact position in which the developer carrying member is contacted with that image bearing member and a spacing position in which the developer carrying member is spaced from the image bearing member. The second unit includes a recess or opening into which a main assembly electrical contact provided in the main assembly of the apparatus to apply a voltage to the process cartridge when the process cartridge is mounted to the main assembly of the apparatus and second unit is positioned in the spacing position. | 02-20-2014 |
20140086599 | DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A development device includes a developer storage chamber configured to store a developer, a developer carrying member configured to carry the developer, a light transmission member capable of transmitting detection light for detecting a remaining amount of a developer in the developer storage chamber, a shaft member which is provided to the developer storage chamber and configured to rotate, a conveyance unit which is provided to the shaft member and configured to convey the developer, and a cleaning unit which is provided to the shaft member and configured to rub and clean the light transmission member, wherein the shaft member includes an opening. | 03-27-2014 |