Patent application number | Description | Published |
20100233613 | CARRIER - A carrier which is capable of avoiding excess blocking of the carrier particles at the time of forming a covering layer and is excellent in durability, a developer containing the carrier, and a developer container containing the developer, as well as an image forming method and a process cartridge which use the developer are provided. A carrier including at least a core material particle and a covering layer, a surface of the core material particle being covered with the covering layer, wherein the covering layer contains a condensate which is obtained by condensation of a silicone resin having at least one of a silanol group and a functional group which can be converted to the silanol group by hydrolysis, using a titanium diisopropoxy bis(ethylaceto-acetate) catalyst. | 09-16-2010 |
20100239975 | CARRIER FOR USE IN DEVELOPER DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER USING THE CARRIER, AND IMAGE FORMING METHOD AND APPARATUS AND PROCESS CARTRIDGE USING THE DEVELOPER - The carrier includes a particulate core material having magnetism; and a resin layer located on the surface of the particulate core material. The resin layer is prepared by forming a layer including a copolymer, which includes a unit (A) having a specific acrylic siloxane structure, a unit (B) having a specific acrylic silicone structure having a crosslinking ability, and a unit (C) having a specific acrylic structure in a specific ratio, on the particulate core material, and then subjecting the layer to a heat treatment to crosslink the layer. | 09-23-2010 |
20110086307 | CARRIER FOR TWO-COMPONENT DEVELOPER - A carrier, including a magnetic particulate core material and a resin layer on the core material, wherein the resin layer includes a resin obtained by heat treatment of a copolymer including a site derived from a monomer component having the following formula (1) and a site derived from a monomer component having the following formula (2), and includes a cross-linked material obtained by hydrolysis of the copolymer to produce a silanol group and condensation using an organotitanium compound: | 04-14-2011 |
20110091802 | CARRIER, METHOD FOR PREPARING THE CARRIER, DEVELOPER USING THE CARRIER, DEVELOPER CONTAINER, AND IMAGE FORMING METHOD AND PROCESS CARTRIDGE USING THE DEVELOPER - The carrier is used for a two-component developer for developing an electrostatic latent image, and includes a particulate magnetic core material; and a cover layer located on a surface of the core material and including a crosslinked material and barium sulfate. The cover layer is formed by applying a coating medium including barium sulfate, a copolymer including a unit (A) having a specific acrylic siloxane structure including a tris(trialkylsiloxy)silanyl group and a unit (B) having a specific acrylic silicone structure having a crosslinking ability, and a condensation reaction catalyst, heating the applied medium to a temperature of from 100° C. to 230° C. so that the copolymer is hydrolyzed to produce a material having a silanol group, and the material and the catalyst are subjected to a condensation reaction to form the crosslinked material. | 04-21-2011 |
Patent application number | Description | Published |
20110065037 | LATENT ELECTROSTATIC IMAGE DEVELOPING CARRIER, TWO-COMPONENT DEVELOPER AND IMAGE FORMING METHOD - A latent electrostatic image developing carrier including a carrier core material, and a coating layer containing a resin and provided on a surface of the carrier core material, wherein the coating layer includes a particulate material containing at least first fine conductive particles and second fine conductive particles, and wherein the first fine conductive particles and the second fine conductive particles satisfy the relationships expressed by Expressions 1 and 2, 3≦D1/D2≦15 . . . Expression 1, where D1 denotes a dispersed particle diameter of the first fine conductive particles and D2 denotes a dispersed particle diameter of the second fine conductive particles, and −7E≦R1×R2≦8E . . . Expression 2, where R1 denotes a powder specific resistance of the first fine conductive particles and R2 denotes a powder specific resistance of the second fine conductive particles. | 03-17-2011 |
20110229817 | CARRIER, METHOD FOR PREPARING THE CARRIER, DEVELOPER USING THE CARRIER, DEVELOPER CONTAINER, AND IMAGE FORMING METHOD AND APPARATUS AND PROCESS CARTRIDGE USING THE DEVELOPER - The carrier is used for a two-component developer for developing an electrostatic latent image, and includes a particulate magnetic core material; and a cover layer located on a surface of the particulate magnetic core material and including a crosslinked material. The crosslinked material is formed by hydrolyzing a copolymer including at least a unit (A) having a specific acrylic siloxane structure including a tris(trialkylsiloxy)silanyl group and a unit (B) having a specific acrylic silicone structure to form a material having a silanol group, and subjecting the material having a silanol group to a condensation reaction using an organic zirconium-containing catalyst. | 09-22-2011 |
20120230738 | DRIVING FORCE TRANSMISSION MECHANISM AND IMAGE FORMING APPARATUS - A driving force transmission mechanism includes a connection for integrally rotating a driving shaft on the driving source side and a driven shaft of a rotary member. The connection includes a tubular boss portion; and a fitting shaft portion fitted into the tubular boss portion. An inner shaft portion is provided in a projecting manner from bottom center of the tubular boss portion toward inside the tubular boss portion. An inner recessed portion into which the inner shaft portion fits is provided in center of a leading edge plane for fitting of the fitting shaft portion. Micro gaps are provided between an inner surface of the tubular boss portion and an outer surface of the fitting shaft portion and between an inner surface of the inner recessed portion and an outer surface of the inner shaft portion. | 09-13-2012 |
20120237249 | IMAGING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An imaging device provided with a latent image carrying body rotatably disposed to carry a latent image, a developing unit that develops the latent image carried on the carrying body by using a developer containing toner at least, and a duct disposed downstream of the developing unit and having a wall with an upstream suction port and a downstream suction port formed. An air flow path is formed by a surface of the latent image carrying body and a surface of the duct wall, between the upstream suction port and the downstream suction port. A gap of the air flow path is wider at the downstream side than at the upstream side with respect to the rotational direction of the latent image carrying body. | 09-20-2012 |
20120269544 | DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS INCORPORATING SAME - A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening formed in the development casing, a magnetic field generator, a developer regulator disposed facing the developer bearer, a first seal member to cover a clearance between the latent image bearer and a rim of the development casing upstream from the opening, and a second seal member. The first seal member includes a first end portion fixed to the rim of the development casing and a second end portion in contact with the latent image bearer, and the second seal member includes a first end portion fixed to an inner face of the development casing farther from the latent image bearer than the first seal member, and a second end portion hanging to contact the developer carried on the developer bearer downstream from the developer regulator. | 10-25-2012 |
20120269553 | DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening in the development casing to carry developer, a magnetic field generator disposed inside the developer bearer, a developer regulator extending in an axial direction of the developer bearer to adjust an amount of developer carried on the developer bearer, and a first axial end seal provided in an axial end portion of the development device outside an image range, in contact with an upstream face of the developer regulator to reduce a size of a clearance between the developer regulator and the development casing. | 10-25-2012 |
20140133889 | DEVELOPER CONVEYANCE DEVICE AND IMAGE FORMING APPARATUS - A developer conveyance device includes a developer reservoir for containing developer, and a positive-displacement pump to alternately generate positive pressure and negative pressure by varying a volume of space therein to transport developer from the developer reservoir to a destination. When Qp represents a volume of developer moved by a single pumping action of the pump, calculated by multiplying a maximum flow amount of the pump per unit time by an operation time of the pump; Qd represents a volume of developer contained in the developer reservoir; and Qe represents a volume of developer present in a virtual columnar space defined by vertically raising the developer outlet to a level of developer contained in the developer reservoir, either Qp>Qd or Qp>Qe is satisfied. | 05-15-2014 |
20140248061 | DEVELOPER REPLENISHING DEVICE TO TRANSPORT DEVELOPER FROM DEVELOPER CONTAINER, IMAGE FORMING APPARATUS INCLUDING SAME, AND CONVEYANCE DEVICE TO TRANSPORT POWDER OR FLUID FROM CONTAINER - A developer replenishing device includes a container mount to hold a developer container to contain developer used in image formation, an installation completion detector to detect completion of installation of the developer container in the container mount, a replaceable containing portion to contain developer, a conveyance channel to which the containing portion is removably connected and through which developer is transported from the developer container held in the container mount to the containing portion, and a conveyance pump to transport developer from the developer container through the conveyance channel to the containing portion. In a state in which the developer container is not held in the container mount according to a detection result by the installation completion detector, the conveyance pump transports developer from the conveyance channel to the containing portion. | 09-04-2014 |
20150055966 | DEVELOPER CONVEYANCE DEVICE, IMAGE FORMING APPARATUS, AND DEVELOPER CONVEYANCE METHOD - An image forming apparatus includes a developing device; a developer conveyance device including a developer container, a developer reservoir to receive developer discharged from the developer container, and a positive-displacement pump to discharge, from the developer reservoir, developer supplied to the developing device by alternately generating positive pressure and negative pressure due to volume changes; and a controller to control driving of the positive-displacement pump. When the controller recognizes a developer end state of the developer container, the controller lowers a developer conveyance capability of the positive-displacement pump from a setting used before the developer end state is recognized. | 02-26-2015 |
20150078788 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE INCORPORATING SAME - A developing device includes a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a development range facing a latent image bearer, and the developer bearer includes a magnetic field generator having multiple magnetic poles and a cylindrical developing sleeve to rotate and bear developer on an outer circumferential face thereof with magnetic force of the magnetic field generator provided inside the developing sleeve. The developing sleeve receives developing bias voltage including an AC component, and includes a base to maintain a cylindrical shape of the developing sleeve and a low friction surface layer including a material lower in friction coefficient with toner than a material of the base. | 03-19-2015 |
Patent application number | Description | Published |
20090128717 | IMAGE DISPLAY APPARATUS - A laser projector includes a green laser, a two-wavelength laser, a PBS, a collimator lens, a two-axis galvanometer mirror, a group of lenses, and a screen. The green laser emits a green laser beam. The two-wavelength laser emits red and blue laser beams. The PBS is provided at the position where respective optical paths of laser beams emitted from respective lasers cross each other to cause these optical paths to coincide with each other. | 05-21-2009 |
20090190099 | PROJECTOR EMITTING LASER LIGHT OF MULTIPLE COLORS AND OPTICAL AXIS ADJUSTING METHOD FOR THE PROJECTOR - A first light output unit integrally has a first light source and a first prism, a second light output unit integrally has a second light source and a second prism, and a third light output unit integrally has a third light source and a third prism. A first surface of the first prism and a second surface of the second prism are adhered together by an adhesive with a first film located therebetween, and first film passes green laser light and reflects blue laser light. A third surface of the second prism and a fourth surface of the third prism are adhered together by an adhesive with a second film located therebetween, and second film passes the green laser light and the blue laser light, and reflects red laser light. | 07-30-2009 |
20090190103 | LASER PROJECTOR PERFORMING LASER RASTER SCAN USING A SCANNING MIRROR - An enlarging optical unit receives laser light emitted from a laser light source, enlarges a light flux of the received laser light to have a diverging angle corresponding to a swing angle of a scanning mirror and provides it to the scanning mirror. | 07-30-2009 |
20090237794 | COLLAPSIBLE LENS BARREL AND OPTICAL INSTRUMENT USING THE SAME - A collapsible lens barrel includes a first holding frame ( | 09-24-2009 |
20100119219 | COLLAPSIBLE LENS BARREL AND OPTICAL INSTRUMENT USING THE SAME - A collapsible lens barrel includes a first holding frame ( | 05-13-2010 |
20140160447 | IMAGE DISPLAY DEVICE - An image display device includes a holder and an optical component. The holder has an optical path. The optical component is mounted to the holder such that the optical component is disposed in the optical path of the holder. The holder has a first portion with a first edge part and a second portion with a second edge part. The holder is integrally formed as a one-piece, unitary member. The first and second portions are axially and adjacently arranged relative to each other along an optical axis of the optical path of the holder. The first and second edge parts at least partially define a circumferential edge of an aperture that is arranged with respect to the optical component in the optical path of the holder. | 06-12-2014 |
20140293239 | PROJECTOR AND HEAD-UP DISPLAY DEVICE - A projector includes a cooling unit that is disposed so as to face an inner side of a housing and that includes a cooling plane that cools to a temperature lower than the housing, a light emitting element that is disposed in the housing, that emits a light beam, that enables an adjustment of a position and a tilt of an optical axis, and that comprises an outer plane where an angle relative to the cooling plane of the cooling unit is fixed even when displaced by the adjustment, and a heat transfer member that is in surface contact with and thermally connected to the cooling plane of the cooling unit and the outer plane of the light emitting element. | 10-02-2014 |
20140293430 | PROJECTOR AND HEAD-UP DISPLAY DEVICE - A projector includes a main body enclosure and a housing that houses an optics module and is disposed within the main body enclosure. The housing includes a case with a first opening, a first cover attached to the first opening, and a first seal that creates an airtight seal between a peripheral edge of the first opening and the first cover. Air pressure within the housing is set to a value that is different from air pressure between the main body enclosure and the housing. | 10-02-2014 |