Class / Patent application number | Description | Number of patent applications / Date published |
399259000 | Diverse (e.g., carrier and toner) | 13 |
20080279592 | DEVELOPING AGENT STORAGE DEVICE AND IMAGE FORMING APPARATUS HAVING SAME - A developing agent storage device for storing a refill developing agent includes toner particles, carrier particles, an inner layer of the developing agent storage device. The toner particles and carrier particles compose the refill developing agent. The inner layer is provided as a wall contacting the refill developing agent. An electrostatic chargeability level of the toner particles, the carrier particles, and the inner layer is set in an order of toner, inner layer, and carrier from any one of a negative charge side and a positive charge side. | 11-13-2008 |
20090052950 | POWDER TRANSPORT WITH A TAPERED FEED ROLLER OF AN ELECTROSTATOGRAPHIC PRINTER - An apparatus and method for dispensing toner in an electrostatographic printer includes an apparatus for feeding powder toward the feed apparatus wherein the feed roller includes a tapered feed roller comprising a shaft and one or more variable height flutes such that there is more developer volume in the direction of flow as well as a conveyance controller for controlling the powder conveying device, including the one or more tapered feed rollers such that the tapered feed roller preferentially uniformly conveys the powder toward the feed apparatus. | 02-26-2009 |
20090103953 | IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - An objective is to provide an Image forming method and an image forming apparatus exhibiting neither failure in lack of line image nor image defect in halftone images, together with extremely high image quality and longer lifetime. Disclosed is an image forming method possessing the steps of evenly charging an organic photoreceptor; conducting a light exposure process; conducting a developing process to visualize the electrostatic latent image formed on the organic photoreceptor to form a toner image; transferring the toner image into a transfer medium; and conducting a cleaning process to remove a residual toner from the organic photoreceptor, the method further comprising the step of replenishing a developing device with a developer comprising toner and carrier, wherein the organic photoreceptor comprises a surface protective layer containing a filler, and the carrier is mixed with the toner, after attaching a lubricant onto a carrier particle in advance. | 04-23-2009 |
20090162102 | CARRIER REPLENISHMENT AND IMAGE MOTTLE REDUCTION SYSTEM - A replenishment and image mottle reduction system for adding carrier particles to a developer housing in a two-component developer toner imaging machine. The replenishment system includes (i) a carrier-only hopper for receiving and containing a first quantity of carrier particles; (ii) metering valves connected to a discharge end of the carrier-only hopper; (iii) a pneumatic plenum connected to the metering valves; (v) an air blower connected to the carrier-only hopper and to the pneumatic plenum for pressurizing the carrier-only hopper and for pneumatically conveying a metered quantity of carrier particles in an air stream from the pneumatic plenum; and (vi) a carrier separator assembly connected to the pneumatic plenum, located above each developer housing and including a carrier current collector, for separating fresh carrier from the air stream, and for allowing the carrier separated as such to drop by gravity into the developer housing. | 06-25-2009 |
20090162103 | TONER IMAGE REPRODUCTION MACHINE INCLUDING A BALL VALVE DEVICE HAVING A PRESSURE RELEASE ASSEMBLY - A ball valve device for filling pressurized hoppers includes (a) a valve housing having a wall defining a chamber, a first port and a second port; (b) a valve ball rotatable within the chamber and including a through-bore for material flow from a refill container through the second port into the hopper, the valve ball having a horizontal, first hopper sealing position for pressure sealing the second port, and a vertical, second hopper opening position for opening the second port to the through-bore; and (c) a pressure release assembly including (i) a pressure release port formed through the valve housing wall and spaced from the first port and the second port; and (ii) a pressure release and particle catch assembly connected externally to the pressure release port for receiving pressure and remnant carrier particles from the refill container, thereby allowing safe release of pressure from the through-bore and from the refill container following refilling of the pressurized hopper. | 06-25-2009 |
20090162104 | REPLENISHMENT CARRIER INJECTION SYSTEM - A replenishment carrier injection system is provided for adding carrier particles to a developer housing in a two-component developer toner imaging machine. The replenishment system includes (i) a carrier-only hopper for receiving and containing a first quantity of carrier particles; (ii) metering valves connected to a discharge end of the carrier-only hopper; (iii) a pneumatic plenum connected to the metering valves; (v) an air pump connected to the carrier-only hopper and to the pneumatic plenum for pressurizing the carrier-only hopper and for pneumatically conveying a metered quantity of carrier particles in an air stream from the pneumatic plenum; and (vi) carrier injection assemblies each being connected to the pneumatic plenum and including a conduit for carrier flow, a direct injector elbow connecting the conduit to a developer housing for directly injecting fresh carrier from the pneumatic plenum into the developer housing; and a fresh carrier current collector for detecting any fault in fresh carrier flow through said direct injector elbow the system into the developer housing. | 06-25-2009 |
20090285606 | IMAGE FORMING UNIT AND IMAGE FORMING APPARATUS - An aspect of the invention provides an image forming unit that comprises: a developer container configured to contain a developer; and a developer supplier including at least a developer carrier configured to supply the developer, contained in the developer container, to a latent image formed on an image carrier, wherein: the glass transition temperature of a first developer initially contained in the developer supplier is higher than the glass transition temperature of a second developer contained in the developer container; and the glass transition temperature of the first developer is equal to or lower than 75° C. | 11-19-2009 |
20100239324 | SYSTEM AND METHOD FOR PRODUCING A DRY TONER ASSOCIATED WITH A SELECTED GLOSS LEVEL - A system and method for producing toner associated with a selectable gloss level is provided. The method includes holding a first toner formed of particles, associated with a relatively low gloss level, and having two particle properties, each having a first and second characteristic, respectively, and holding a second toner formed of particles, associated with a relatively high gloss level, and having the two particle properties, each having a third and fourth characteristic, respectively. The first and third and the second and fourth characteristics are substantially the same. The first and second toners are transported and a ratio of their respective volumes is determined so that when blended a third toner is produced which is associated with a selected gloss level that is in-between the low and high gloss levels. The transporting is controlled in accordance with the determined ratio. | 09-23-2010 |
20110013945 | DEVELOPING DEVICE AND DEVELOPING METHOD FOR IMAGE FORMING APPARATUS - According to an embodiment, a developing device, comprising: a developing unit configured to store an initial two-component developer including an initial toner containing silica externally added and a carrier and to form a toner image on an image bearing member with the two-component developer; a discharging section configured to discharge a part of the initial developer from the developing unit; and a developer supplying unit configured to supply a supply developer including a supply toner containing silica externally added and the carrier to the developing unit, the amount of silica added to the supply toner being smaller than the amount of silica added to the initial toner. | 01-20-2011 |
20140147174 | DEVELOPER CASE AND IMAGE FORMING APPARATUS - A developer case includes a case main body and a carrier tank. The case main body includes a toner containing space and a merging space. The toner containing space contains a toner. The merging space communicates to the toner containing space. The carrier tank is attachably/detachably installed to the case main body. The carrier tank includes a carrier containing space. The carrier containing space contains a carrier and communicates to the merging space. The toner conveyed from the toner containing space and the carrier conveyed from the carrier containing space are merged with each other in the merging space and discharged to an outside. | 05-29-2014 |
20140369718 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes: a developer container section configured to contain therein a two-component developer composed of toner and magnetic carrier; a developer bearing member configured to supply the developer to an image bearing member on which an electrostatic latent image is formed; a toner supplying section configured to supply the toner to the developer container section via the toner supply port; a carrier supplying section provided separately from the toner supplying section, the carrier supplying section being configured to supply the carrier to the developer container section via the carrier supply port; and a carrier detection section disposed at a position near the carrier supply port and at a same level as a powder surface of the developer contained in the developer container section, the carrier detection section being configured to detect carrier supplied from the carrier supplying section. | 12-18-2014 |
20160091824 | DEVELOPER SUPPLY CARTRIDGE - A developer supply cartridge includes a developer supply container. The developer supply container includes a developer accommodation section, a developer in the developer accommodation section, a discharging port configured to discharge the developer toward a developer supply apparatus, a pump unit configured to perform an exhaust operation through the discharging port, a developer storage section configured to store a certain amount of developer before discharge, the developer storage section communicating with the developer accommodation section and being in contact with the discharging port, and a suppression part configured to control inflow and suppression of inflow of the developer from the developer accommodation section to the developer storage section and suppress the inflow of the developer during the exhaust operation of the pump unit. The developer has a compressibility Ct of 30.0% or more and 45.0% or less. | 03-31-2016 |
20160139539 | DEVELOPING DEVICE - A developing device includes: a developing container, a feeding member, a developer carrying member, and a collecting device. A coverage which is a percentage of coating of surfaces of the carrier particles with the toner particles is 100% or more and 200% or less. The developer carrying member has a plurality of recessed portions formed on a surface thereof so that at least the toner particles having an average particle size are contactable with inner surfaces of the recessed portions and the carrier particles having an average particle size are not contactable with the inner surfaces of the recessed portions. The recessed portions are formed so that not less than halves of the toner particles having the average particle size are exposed from the recessed portions when the toner particles having the average particle size enter the recessed portions. | 05-19-2016 |