| Patent Number |
Title Of Patent |
Date Issued |
| 7620351 |
Developing device and image forming device |
November 17, 2009 |
| A developing device comprises a stirring roller 7 having stirring blades 7a for stirring a developer, a developing roller 3 for transferring the developer to an electrostatic latent image, a control member 4 for controlling the amount of developer transferred from the developing roll |
| 7406280 |
Magnet roller developing device and image forming apparatus for reducing obstructions in develop |
July 29, 2008 |
| A device including a developing roller having a magnet roller for transporting developer, and developing an electrostatic latent image, a regulating member regulating transportation amount of the developer transported to the electrostatic latent image with the development roller, and |
| 7020416 |
Image forming apparatus with arrangement for controlling assembly order |
March 28, 2006 |
| The process frame body has the guide portion, and the development device has the to-be-guided shaft. When the process frame body is unattached to the apparatus main body, the guide portion of the development device is absent, thus preventing proper attachment and positioning of the d |
| 6868239 |
Developer detection device and printer |
March 15, 2005 |
| A detection mechanism is provided with a sealing member made of elastic material for preventing toner leakage between (a) a pierced wall surface of a toner tank through which a rotating shaft is inserted and (b) a second side plate provided on the rotating shaft. With this structure, a |
| 6853821 |
Image forming device and toner device |
February 8, 2005 |
| A toner cartridge stored in a developer casing includes a biasing force generating device, an actuating rod that switches the biasing device between an active state and a non-active state by one movement of a release member. A developer casing swings by the movement of the actuating |
| 6792217 |
Use status detecting mechanism and image-producing unit |
September 14, 2004 |
| A use status detecting mechanism includes a cover having an edge portion, in a portion of which a notch is formed, a moving member having a rod member, a spring portion, protrusions and grooves, and a shaft having a driving gear and ribs. In the unused state of a developing unit, the rod |
| 6741822 |
Image forming apparatus with members for holding a cartridge |
May 25, 2004 |
| Elastic members are fixed at one end to the housing of an image forming apparatus while their distal ends extend into the framework of the developing unit. When a toner cartridge is fitted to the framework of a developing unit, the distal ends of the elastic members abut the top surf |
| 6421517 |
Toner supply device with rotatable agitating element |
July 16, 2002 |
| The length of a conveying sheet is set to be greater than the rotational radius of an agitating element so that the distal end of the conveying sheet will slide over the inner wall of the toner container. A slider element having a low frictional resistance is attached at the distal end |
| 6415126 |
Developing unit with agitator and conveying sheet for toner |
July 2, 2002 |
| A toner reserve container provided with a toner replenishing roller and a replenishing port which constitute a toner replenishing portion is arranged adjacent to a developing hopper and is provided with a toner conveying unit. The conveying unit includes an agitator rotated about a r |
| 6385422 |
Developing unit equipped with a toner replenishing device configured with a conveying sheet and |
May 7, 2002 |
| A developing unit includes a developing hopper, a toner reserve container that incorporates a replenishing roller and a replenishing port forming a toner replenishing portion, arranged adjacent to the developing hopper in order to supply the toner to the developing hopper. The toner rese |
| 6272298 |
Developer cartridge |
August 7, 2001 |
| A developer cartridge capable of being fitted to the toner replenishing opening of a developer storage hopper has a sealing member for sealing the toner therein that is bonded to the rim of its replenishing opening to be opposed to the opening of the developer storage hopper. The bottom |
| 6266507 |
Developing device having low turbulence developer flow |
July 24, 2001 |
| A developing device includes: a multiple number of magnetic poles fixed at predetermined positions; a developer sleeve which rotatably encloses the magnetic poles; a doctor blade for regulating the thickness of the developer layer on the developer sleeve; and an agitating roller arranged |
| 6167227 |
Developing unit and image forming apparatus |
December 26, 2000 |
| A developing unit and an image forming apparatus includes drive and control mechanisms for the conveyance of collected toner and fresh toner in an uncomplicated structure and an uncomplicated toner supplying roller structure for the reduction in manufacturing cost. Fresh toner and co |
| 6035168 |
Developing device having a reduced width in the horizontal direction |
March 7, 2000 |
| A developing device having a reduced size in the horizontal direction and in which a developing agent is transported with stirring along a circulating route inside a developing tank to effectively mix newly added toner therewith and stir the mixture. A developing tank for storing dev |
