Patent application number | Description | Published |
20110053072 | TONER SET, DEVELOPER SET, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A toner set has toners used in an image forming method by forming a toner image with toners of several colors and fixing the toner image onto a recording medium. The toners include first and second toners of different colors. The first and second toners contain toner base particles including a binding resin, a colorant and a wax. The colorant of the first toner contains a quinacridone pigment. The wax includes a carnauba wax and a wax other than the carnauba wax. The base particles of the first toner have a mass % W | 03-03-2011 |
20110091800 | TONER FOR ELECTROPHOTOGRAPHY AND DEVELOPER - Toner for electrophotography contains toner base particles containing a binder resin, a colorant, and a wax, resin particles containing a binder resin and a wax, but substantially not containing a colorant, and an external additive that is externally added to the toner base particles and the resin particles, with a mean domain diameter of the wax in the resin particles being larger than a mean domain diameter of the wax in the toner base particles. | 04-21-2011 |
20130315629 | DEVELOPER CONVEYING DEVICE, AND DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between a pair of wall portions. The conveying member includes a spiral member, an inner wall portion and shaft portions. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The inner wall portion includes a plurality of planar portions which define the hollow interior of the spiral member and are connected at predetermined angles in a circumferential direction of the rotation of the conveying member. The shaft portions are arranged at opposite end parts of the spiral member, rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member. | 11-28-2013 |
20130315630 | DEVELOPER CONVEYING DEVICE, AND DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between the pair of wall portions of the housing. The conveying member conveys developer from one wall portion toward the other. The conveying member includes a spiral member, shaft portions, a rib member, a supporting member and a projecting portion. The spiral member is formed by connecting spiral pieces in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The rib member extends in the conveying direction and bridges adjacent ones of the spiral pieces of the spiral member. The supporting member connects an end part of the rib member in the conveying direction and the shaft portion. The projecting portion projects from the end part of the rib member more toward the wall portion than the supporting member. | 11-28-2013 |
20130315631 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developing device includes a developing roller, a developer supply path, a developer conveyance path, a supply-side conveying member and an agitating-side conveying member. The developing roller is rotatably supported in the housing. The developer supply path is arranged along the developing roller. The developer conveyance path is arranged along the developer supply path. The supply-side conveying member is a conveying member arranged in the developer supply path and includes a first receiving portion arranged to face the communication path at an upstream side in the first direction and configured to receive the developer from the developer conveyance path, and has a hollow spiral shape at a side downstream of the first receiving portion. The agitating-side conveying member is a conveying member arranged in the developer conveyance path and includes a first transferring portion arranged to face the first receiving portion at a downstream side in the second direction. | 11-28-2013 |
20130315632 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developing device includes a housing, a developing roller, a developer supply path, a developer conveyance path, a supply-side conveying member, an agitating side conveying member and first projection members. The developing roller is rotatably supported in the housing. The supply-side conveying member includes a supply-side spiral member formed by connecting spiral pieces, in the first direction and having a hollow interior formed by the connected spiral pieces and a first rib member extending in the first direction, is arranged in the developer supply path and conveys the developer in the first direction by being driven and rotated. The first projecting members extend in the first direction along an outer wall portion of the first rib member from a first area where the supply-side spiral member and the first rib member intersect and project radially outward in the rotation of the supply-side conveying member. | 11-28-2013 |
20140023401 | DEVELOPER CONVEYING DEVICE, AND DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developer conveying device includes a housing with a pair of wall portions, a developer conveyance path extending between the pair of wall portions, and a conveying member. The conveying member is rotatably supported on the wall portions and conveys developer from one wall portion to the other. This conveying member includes a spiral member, shaft portions and a breaking member. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior defined by the connected spiral pieces. The shaft portions are arranged at opposite end parts of the spiral member and rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member. The breaking member extends across the hollow interior in a direction intersecting with the conveying direction. | 01-23-2014 |
20150378277 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - A developing device includes a housing, a developer carrier, a conveying member and a surface layer. The conveying member conveys the developer in the first conveying direction and supplies the developer to the developer carrier. The surface layer is arranged on the circumferential surface of the developer carrier and formed on a surface of a predetermined cylindrical base member. The surface layer is formed by an immersion method of immersing the base member in an immersion tank so that an axial direction of the base member extends along a vertical direction. A lower end side of the base member at the time of the immersion is arranged in a downstream side of the housing in the first conveying direction and an upper end side of the base member at the time of the immersion is arranged in an upstream side of the housing in the first conveying direction. | 12-31-2015 |
Patent application number | Description | Published |
20100062354 | FULL-COLOR TONER, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A full-color toner set including a yellow component, a cyan component, and a magenta component, wherein in each of the color components, resin fine particles are added to a surface of base particles. Further, the yellow component may include a monoazo pigment serving as a colorant in the base particles. In addition, the following formulae (1) and (2) may be satisfied, where the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the yellow component is represented by Wy, the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the cyan component is represented by Wc, and the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the magenta component is represented by Wm, | 03-11-2010 |
20100062356 | TONER FOR ELECTROSTATIC DEVELOPMENT, IMAGE FORMING APPRATUS, AND IMAGE FORMING METHOD - An embodiment of toner for electrostatic development may include toner base particles, and resin fine particles. Further, some embodiments may include external additives, such as hydrophobic silica. In some embodiments, the resin fine particles may include a polymer having an isobornyl group-containing acrylate monomer. | 03-11-2010 |
20110176840 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED THEREWITH - A developing device includes: a developing roller incorporating a fixed magnet body having a plurality of magnetic poles in a circumferential direction; a regulating member for regulating an amount of toner on the developing roller by means of a magnetic field formed by the regulating member and the fixed magnet body; and a magnetic-field generating member for scraping off, on an upstream of the regulating member in a rotational direction of the developing roller, toner which is not used for development on the developing roller. A relation Bm/Br>1 is satisfied, where Br represents a magnetic flux density of a distal end portion of the regulating member facing a surface of the developing roller and Bm represents a magnetic flux density of a distal end portion of the magnetic-field generating member facing the surface of the developing roller. | 07-21-2011 |
20130084107 | DEVELOPER CASE THAT SUPPRESSES CLOGGING DUE TO DEVELOPER, DEVELOPER REPLENISHMENT UNIT HAVING THE SAME, AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer case includes a main body, a first transportation portion, a first transportation member, a supply member, a discharge port, and a second transportation portion. The main body contains developer. The first transportation portion has a first region that receives developer from the main body and a second region that extends from the first region in a first direction. The first transportation member transports developer in the first direction. The supply member supplies developer to the first region. Developer is discharged through the discharge port. The second transportation portion has an inlet port communicating with the second region. Developer that has not been discharged through the discharge port is supplied to the second transportation portion through the inlet port. The second transportation portion transports developer in a second direction. | 04-04-2013 |
20130101317 | DEVELOPER CASE AND IMAGE FORMING APPARATUS TO WHICH DEVELOPER CASE IS APPLIED - A developer case has a main body, a cylindrical portion, and a rotating unit. The main body has a bottom wall. The cylindrical portion has a discharge port. The rotating unit is located so as to extend across the main body and the cylindrical portion, transports developer in the main body, and has a rotating shaft, a first transport member, a second transport member, and dispersing members. The rotating shaft has a first portion located in the main body and a second portion located in the cylindrical portion. The first transport member transports developer in a first transport direction from the cylindrical portion to the main body. The second transport member transports developer in a second transport direction from the main body to the cylindrical portion. The dispersing members move developer in the radial direction. | 04-25-2013 |
20130156468 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A developing device includes a first agitating member and a second agitating member. Each of the first and second agitating members includes a screw having a helical portion formed helically so as to define a hollow portion, and a plurality of ribs formed on the helical portion in the longitudinal direction of the screw. On at least one of the first and second agitating members, there is disposed a paddle opposed to the communicating portion on a downstream side in a transport direction of the developing powder. The paddle has a flat surface in a direction perpendicular to the longitudinal direction, and a width of a distal end of the paddle is smaller than a width of a proximal end of the paddle disposed to the agitating member in a plan view. | 06-20-2013 |
20130315628 | CONVEYANCE DEVICE, DEVELOPMENT DEVICE INCLUDING CONVEYANCE DEVICE, AND IMAGE FORMING APPARATUS INCLUDING DEVELOPMENT DEVICE - A conveyance device includes a housing, a formation member, and a detection section. The housing has a first conveyance path, a second conveyance path, and a first communication path. The first and second conveyance paths each are a conveyance path for conveying a developer. The first communication path allows a first end portion of the first conveyance path and a first end portion of the second conveyance path to be in communication with each other via a communication surface. The communication surface has a first region and a second region. The formation member forms the second region of the communication surface so that a height of the second region from a bottom portion of the first communication path is lower than a height of the first region from the bottom portion of the first communication path. The detection section detects the amount of the developer. | 11-28-2013 |
20140023403 | DEVELOPER CONVEYANCE DEVICE, DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATUS - A developer conveyance device includes a housing and a conveyance member. The conveyance member is supported to the housing and rotates to convey developer. The conveyance member includes a shaft portion, a helical member, and a plurality of reinforcement members. The plurality of reinforcement members are disposed in a circumferential direction of rotation of the conveyance member. When viewing a cross section in a direction intersecting with the rotational axis, an outer circumferential surface of the helical member includes a facing region and a non-facing region, which are defined for one reinforcement member of the plurality of reinforcement members, the facing region being a region where the one reinforcement member of the plurality of reinforcement members is projected on an opposite side of an outer circumferential surface of the helical member through the rotational axis, and the non-facing region being a region of the outer circumferential surface of the helical member which is different from the facing region. The other reinforcement member of the plurality of reinforcement members is disposed in the non-facing region. | 01-23-2014 |
20140314450 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - A developing device includes a developing container, a first agitating/conveying member, a second agitating/conveying member, a developer supply member, a supply port, and a supply section. The developing container is separated into a developer supply passage, a first conveying chamber, and a second conveying chamber, which are arranged substantially parallel to one another. The supply section is disposed between the developer supply passage and the first conveying chamber, and through the supply section, the developer is supplied from the developer supply passage into the first conveying chamber. The supply section is disposed upstream from a downstream-side end portion of the developer supply passage but downstream from the supply port with respect to a developer-conveying direction of the developer supply passage, and via the supply section, the developer supply member supplies the developer into the first conveying chamber in a direction opposite to a developer-conveying direction of the first conveying chamber. | 10-23-2014 |
20150104221 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a developing roller. The developing roller includes a magnetic roller configured to have multiple magnetic poles in a circumferential direction thereof and a roller-shaped developing sleeve sheathed on the magnetic roller, and supplies magnetic toner to a photosensitive drum. Further, the developing sleeve is configured such that a surface of an image region thereof, which is located in an intermediate portion thereof in a rotation axis direction thereof and which supplies the magnetic toner to the photosensitive drum, is coated with a non-magnetic material, and such that surfaces of non-image regions thereof, which are located at opposite ends thereof in the rotation axis direction and which supply no magnetic toner to the photosensitive drum, are coated with a magnetic material. | 04-16-2015 |
20150362862 | Developer Conveying Apparatus, Developing Device, and Image Forming Apparatus - A developer conveying apparatus includes a developer housing portion, a first spiral feeder, a second spiral feeder, a driving unit, an operation control unit, and a sensor. The first spiral feeder and the second spiral feeder each include a hollow spiral member and rib members. The hollow spiral member is spirally formed and internally has a space. The rib members run in the first direction and bridge spiral pieces constituting the spiral member. The operation control unit causes: the driving unit to change the rotation speed of the first spiral feeder and the second spiral feeder according to a printing linear speed of an image forming part; and the driving unit to change a rotational phase difference between the first spiral feeder and the second spiral feeder referring positions of the rib members to a predetermined rotational phase difference according to the changed rotation speed. | 12-17-2015 |
Patent application number | Description | Published |
20100224108 | PULVERIZED COAL-FIRED BOILER AND PULVERIZED COAL BURNING METHOD - A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. | 09-09-2010 |
20100269741 | SOLID FUEL BURNER, SOLID FUEL BURNER COMBUSTION METHOD, COMBUSTION APPARATUS AND COMBUSTION APPARATUS OPERATION METHOD - A solid fuel burner and its combustion method suited for encouraging fuel ignition and avoiding slugging caused by combustion ash, wherein a gas of low oxygen concentration (exhaust combustion gas) is used as a carrier gas of such a low grade solid fuel as brown coal. An additional air nozzle for jetting additional air having a velocity component in the circumferential direction of a fuel nozzle is provided in the fuel nozzle, thereby encouraging mixing between the fuel and air in the fuel nozzle. Further, the amount of air supplied from the additional air nozzle is adjusted in response to the difference in combustion loads. Under light load, the amount of air supplied from the additional air nozzle is increased so as to increase the oxygen concentration of the circulating flow formed downstream of the outside of the outlet of the fuel nozzle, whereby stable combustion is ensured. Under heavy load, by contrast, the amount of air supplied from the additional air nozzle is decreased, and a flame is formed away from the fuel nozzle in such a way that burner structures and furnace wall will be less subjected to radiant heat. | 10-28-2010 |
20130255547 | PULVERIZED COAL-FIRED BOILER AND PULVERIZED COAL BURNING METHOD - A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. The main after air ports are structured so as to jet air having a large momentum for enabling arrival at the central part of the furnace, and the sub-after air ports are structured so as to jet air having a small momentum to the neighborhood of the wall face of the furnace, and a sectional center of each of the sub-after air ports is within a range from 1 to 5 times of a caliber of the main after air ports from a sectional center of each of the main after air ports. | 10-03-2013 |
Patent application number | Description | Published |
20090087805 | In-Furnace Gas Injection Port - Tertiary nozzle of port for gas injection into furnace includes a contracted flow producing channel provided obliquely toward central axis from the upstream side of gas flow so that the gas flow has a velocity component heading from the outer circumferential side of the port toward the central axis and a velocity component heading along the central axis toward the interior of the furnace, and including louver disposed for guiding so that the gas flows along the surface of throat wall of enlarged pipe configuration wherein the gas channel is enlarged at a furnace wall opening disposed at an outlet area of the contracted flow producing channel. Accordingly, there can be provided a gas injection port that not depending on conditions, such as the flow rate of gas injected from the port, without inviting any complication of apparatus structuring or cost increase, enables preventing of the growth in lump form of clinker caused by ash adhesion and fusion on the wall surface of throat enlarged pipe portion of the furnace. | 04-02-2009 |
20100064986 | BURNER, AND COMBUSTION EQUIPMENT AND BOILER COMPRISING BURNER - The present invention provides a solid fuel burner, which, while rendering the capacity larger than that in the conventional art, can suppress an increase in an unignited region and thus can realize the prevention of an increase in NOx concentration in a combustion gas and the prevention of a lowering in combustion efficiency, and a combustion equipment and boiler including the burner. The burner includes a fuel-containing fluid supply nozzle ( | 03-18-2010 |
20110053102 | SOLID FUEL BURNER, COMBUSTION APPARATUS USING SOLID FUEL BURNER, AND METHOD OF OPERATING THE COMBUSTION APPARATUS - An air nozzle provided on the outer side of a fuel nozzle of a solid fuel burner is divided into a plurality of regions, and has means for regulating air flow rates in nozzles divided in the upper and lower direction. The nozzles (regions) are connected to only the nozzle wall and have obstacles in the circumferential direction, dividing the inside of the nozzle into a plurality of regions, and by changing air flow rates in the respective regions in the outermost peripheral air nozzle, a deviation in momentum is caused in the vertical direction of the burner, a flame forming position is changed, and a combustion gas temperature at the furnace outlet, temperatures of a heat transfer tube installed on the furnace wall surface and a fluid flowing in the heat transfer tube or temperatures of heat transfer tubes provided in the furnace and a flue on the downstream side and temperatures of fluids flowing in the heat transfer tubes are controlled to be constant. | 03-03-2011 |
20130340659 | COMBUSTION DEVICE - In a boiler having plurality of burners arranged on a furnace wall of a furnace, each burner includes a cylindrical fuel nozzle for injecting a mixture of fuel and carrier gas therefor into the furnace; one or more cylindrical air nozzles provided on the outer circumference of the nozzle for injecting combustion air into the furnace, and a wind box for supplying combustion air to the nozzles in common. The wind box is provided with openings through which combustion air flows in from one direction perpendicular to the axial direction of the burner, and is partitioned by a partition wall to form plurality of parallel flow paths for the air flowing in through the openings. Some of the plurality of flow paths are connected to an upper part of the combustion air nozzle, and the other flow paths are connected to a lower part of the nozzle. | 12-26-2013 |
20140116359 | BURNER, AND COMBUSTION EQUIPMENT AND BOILER COMPRISING BURNER - A burner including a fuel-containing fluid supply nozzle which supplies a fuel-containing fluid, from a connecting part in a fluid transfer flow passage for transferring a fuel-containing fluid including a fuel and a medium for transfer of the fuel, toward an outlet part provided on a furnace wall surface. The nozzle in its cross section perpendicular to the direction of flow of the fluid has a rectangular, elliptical, or substantially elliptical form having major and minor axis parts from a connecting part in the fluid transfer flow passage toward the outlet part provided on the furnace wall surface. Further, the area of a cross section perpendicular to the direction of flow of the fluid is gradually increased from the connecting part in the fluid transfer flow passage toward the outlet part. Air supply nozzle(s) for supplying combustion air are provided on the outer peripheral part of the nozzle. | 05-01-2014 |