Patent application number | Description | Published |
20110102231 | INSULATED ULTRAFINE POWDER AND HIGH DIELECTRIC CONSTANT RESIN COMPOSITE MATERIAL - The present invention provides an insulated ultrafine powder containing electrically conductive ultrafine particles coated with an insulation coating, characterized in that the electrically conductive ultrafine particles are formed of a carbon material which is in the form of spherical particles having a diameter of 1 nm or more and 500 nm or less, fibers having a cross-sectional diameter of 1 nm or more and 500 nm or less, or plate-like particles having a thickness of 1 nm or more and 500 nm or less; the insulation coating is formed of an insulating metal oxide or a hydrate thereof; and the thickness of the insulation coating is 0.3 nm or more, and, when the electrically conductive ultrafine particles are in the form of spherical particles, the coating thickness is equal to or less than the diameter of the particles; when the electrically conductive ultrafine particles are in the form of fibers, the coating thickness is equal to or less than the cross-sectional diameter of the fibers; or when the electrically conductive ultrafine particles are in the form of plate-like particles, the coating thickness is equal to or less than the thickness of the plate-like particles; and as well a high-dielectric-constant resin composite material containing the insulated ultrafine powder. The resin composite material exhibits high dielectric constant and radio wave absorbability, while maintaining fundamental characteristics of resin material (i.e., excellent moldability and workability, and light weight). | 05-05-2011 |
20140170305 | INSULATED ULTRAFINE POWDER, METHOD FOR PRODUCING SAME, AND HIGH DIELECTRIC CONSTANT RESIN COMPOSITE MATERIAL - Provided are an insulated ultrafine powder obtained by adding liquid metal alkoxide to a methanol-containing organic solvent in which a conductive ultrafine powder comprising a carbon material is dispersed and further adding water thereto and a method for producing the same. Also, provided are an insulated ultrafine powder obtained by adding liquid metal alkoxide to a methanol-containing organic solvent in which a conductive ultrafine powder comprising a carbon material is dispersed, further adding a coupling agent having an alkoxide group and then adding water thereto and a method for producing the same. Further, provided is a high dielectric constant resin composite material obtained by blending the insulated ultrafine powder of the present invention with a resin in a volume ratio (insulated ultrafine powder/resin) falling in a range of 5/95 to 50/50. | 06-19-2014 |
Patent application number | Description | Published |
20090206363 | SOLID-STATE SWITCH CAPABLE OF BIDIRECTIONAL OPERATION - A monolithic switching device including a main semiconductor region configured to provide a current-carrying channel as in the form of two-dimensional electron gas. Disposed symmetrically on a surface of the main semiconductor region are two main electrodes to be coupled to an electric circuit for switching control, two gate electrodes for individually controlling current flow between the main electrodes through the current-carrying channel, and two diode-forming electrodes electrically connected respectively to the two main electrodes. The device operates in either Switch On Mode, Switch Off Mode, Negative Current Mode, or Positive Current Mode depending upon voltages applied to the two gate electrodes. | 08-20-2009 |
20100220505 | DC/DC CONVERTER - A DC/DC converter has three half-bridge-type current resonant DC/DC converters that are connected in parallel, have a phase difference of 120 degrees, and are operated at a frequency higher than a resonant frequency. Each of the three half-bridge-type current resonant DC/DC converters includes a transformer having a primary winding, a secondary winding, and a tertiary winding, a series circuit connected to both ends of a DC power source and including first and second switching elements, a series circuit connected to both ends of the first or second switching element and including a resonant reactor, the primary winding of the transformer, and a resonant capacitor, and a rectifying circuit to rectify a voltage generated by the secondary winding and output the rectified voltage to a smoothing capacitor. The tertiary windings are annularly connected to a reactor. | 09-02-2010 |
20110090716 | DC-DC CONVERTER WITH SNUBBER CIRCUIT - In order to achieve an object to reduce a surge voltage and suppress noise generation, the present invention provides a DC-DC converter with a snubber circuit, which boosts a voltage Vi of a DC power supply. The snubber circuit includes: a series circuit connected to both ends of a smoothing capacitor Co and including a snubber capacitor Cs and a snubber resistor Rs; a snubber diode Ds | 04-21-2011 |
Patent application number | Description | Published |
20100019743 | DC-DC CONVERTER - The present invention provides a DC-DC converter including a first series circuit connected to both ends of a first switch and formed of a winding of a first transformer, a first reactor, a first diode, and a smoothing capacitor, a second diode connected to a connection point of a primary winding of the first transformer, the winding of the first transformer and the first switch, and to one end of the smoothing capacitor, a second series circuit connected to both ends of a second switch and formed of a winding of a second transformer, a second reactor, a third diode, and the smoothing capacitor, a fourth diode connected to a connection point of a primary winding of the second transformer, the winding of the second transformer and the second switch, and to the one end of the smoothing capacitor, a third reactor connected to both ends of a series circuit of a secondary winding of the first transformer and a secondary winding of the second transformer, and a control circuit which alternately turns on the first switch and the second switch every ½ cycle, turns off the first switch during an on-period of the second switch, and turns off the second switch during an on-period of the first switch. | 01-28-2010 |
Patent application number | Description | Published |
20130188980 | IMAGE FORMING APPARATUS - An image forming apparatus sequentially transfers toner images formed on a plurality of photosensitive drums onto an intermediate transfer member or a transfer material to form an image. The image forming apparatus includes an intermediate transfer belt provided with electrical conductivity, and a power supply for applying a voltage to a current supply member contacting the outer circumferential surface of the intermediate transfer belt to pass a current from the current supply member to the plurality of photosensitive drums via the intermediate transfer belt, thus primarily transferring the toner images from the plurality of photosensitive drums onto the intermediate transfer belt. | 07-25-2013 |
20130188981 | IMAGE FORMING APPARATUS - An image forming apparatus sequentially transfers toner images formed on a plurality of photosensitive drums onto an intermediate transfer member or a transfer material to form an image. The image forming apparatus includes an intermediate transfer belt provided with electrical conductivity, and a power supply for applying a voltage to a current supply member contacting the intermediate transfer belt to pass a current from the current supply member to the plurality of photosensitive drums via the intermediate transfer belt, thus generating electric discharge on the upstream side of each of primary transfer sections. | 07-25-2013 |
20130195519 | IMAGE FORMING APPARATUS - An image forming apparatus sequentially transfers toner images formed on a plurality of photosensitive drums onto an intermediate transfer member or a transfer material to form an image. The image forming apparatus includes an intermediate transfer belt provided with electrical conductivity, and a power supply for applying a voltage to a secondary transfer roller to pass a current from the secondary transfer roller to the plurality of photosensitive drums via the intermediate transfer belt, thus primarily transferring the toner images from the plurality of photosensitive drums onto the intermediate transfer belt. | 08-01-2013 |
20140321891 | IMAGE FORMING APPARATUS - The present invention relates to an image forming apparatus that forms an image by consecutively superposing toner images that have been formed on a plurality of photosensitive drums, on an intermediate transfer member or a transfer medium. The image forming apparatus is made compact and operates at a low cost. Since a current supply member supplies a current in a rotational direction of an intermediate transfer belt, multiple first transfer portions do not need corresponding voltage sources. Even in the case where a charging member supplies a current, the potential of the intermediate transfer belt is maintained at a predetermined potential by a constant-voltage element connected to support rollers. | 10-30-2014 |
Patent application number | Description | Published |
20090154964 | IMAGE PROCESSING APPARATUS AND METHOD - An image forming apparatus controls the conveyance speed of a transfer material at the time a leading edge of the transfer material enters a transfer nip, to be slower than the moving speed of an image bearing member. Furthermore, the image forming apparatus controls the conveyance speed of the transfer material at the time a trailing edge of the transfer material exits the transfer nip, to be faster than the moving speed of the image bearing member. | 06-18-2009 |
20110274458 | IMAGE FORMING APPARATUS - The image forming apparatus including a fixing part that heats and fixes an unfixed toner image formed on a recording material, onto the recording material, an electric field generation member that forms an electric field in a space in which a component evaporated from a wax flows, the component being generated during the heating and fixing, and a collection member to which a voltage is applied, the collection member electrostatically collecting the component passing through the space in which the electric field has been formed. The image forming apparatus prevents conveyance failures resulting from evaporated components of a release wax adhering to parts within the image forming apparatus. | 11-10-2011 |
20120308280 | IMAGE HEATING APPARATUS AND HEATER USED IN THE APPARATUS - An image heating apparatus includes: an endless belt; a heater, contacted to a surface of the endless belt, provided so that a longitudinal direction thereof is parallel to a generating line direction of the endless belt; and a pressing member for forming a nip together with the endless belt. The heater includes: an elongated substrate; a first heat generating line, provided on the substrate along a longitudinal direction of the substrate, including first heat generating resistors having a negative temperature coefficient of resistance and being electrically connected in series; and a second heat generating line, provided on the substrate along the longitudinal direction of the substrate, electrically connected to the first heat generating line in parallel. The second heat generating line includes a plurality of second heat generating resistors having the negative temperature coefficient of resistance and being electrically connected in series. | 12-06-2012 |
20130272731 | COLOR-IMAGE FORMING APPARATUS - In an image forming apparatus that forms an electrostatic latent image for detection on a photosensitive member by light irradiation and performs color-misregistration correction control on the basis of detection of a change in detection current due to the detecting electrostatic latent image passing through a processing unit disposed close to the periphery of the photosensitive member, the intensity of at least one of the apply voltage of the processing unit and the output of the light irradiation unit is set higher than that during normal image formation. | 10-17-2013 |
20140037348 | IMAGE HEATING APPARATUS AND HEATER USED IN THE APPARATUS - An image heating apparatus includes: an endless belt; a heater, contacted to a surface of the endless belt, provided so that a longitudinal direction thereof is parallel to a generating line direction of the endless belt; and a pressing member for forming a nip together with the endless belt. The heater includes: an elongated substrate; a first heat generating line, provided on the substrate along a longitudinal direction of the substrate, including first heat-generating resistors having a negative temperature coefficient of resistance and being electrically connected in series; and a second heat generating line, provided on the substrate along the longitudinal direction of the substrate, electrically connected to the first heat generating line in parallel. The second heat generating line includes a plurality of second heat-generating resistors having the negative temperature coefficient of resistance and being electrically connected in series. | 02-06-2014 |
20140169813 | IMAGE FORMING APPARATUS INCLUDING REMOVAL UNIT FOR REMOVING DEVELOPER - An image forming apparatus includes a removal unit configured to remove developer that was not transferred to a recording material; and a control unit configured to control an image forming unit for supplying developer to the removal unit. The image forming unit is configured to form first developer image, and second developer image whose length in the sub-scanning direction is longer than that of the first developer image, and whose amount of developer per unit area is less than or equal to that of the first developer image, and the control unit is further configured to, based on a predetermined relationship between the recording material type and the supplying image, select a supplying image formed by the image forming unit before or after the developer image transferred to the recording material. | 06-19-2014 |
20140178110 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus including an image bearing member, an intermediate transfer member, and secondary transfer member having a plurality of protrusions which come into contact with the intermediate transfer member. A superficial layer of the intermediate transfer member includes a superficial layer and a plurality of insulating particles buried in the superficial layer so as to be partially exposed from she superficial layer. In the case where the insulating particles are present in a contact region in which the protrusion brings into contact with the intermediate transfer member, a portion in which the protrusion brings into direct contact with the superficial layer is present in the contact region. | 06-26-2014 |