Patent application number | Description | Published |
20080232417 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND FABRICATION METHOD FOR SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes a lower cladding layer, an active layer, and an AlGaAs upper cladding layer mounted on a GaAs substrate. The semiconductor light emitting device has a ridge structure including the AlGaAs upper cladding layer. The semiconductor light emitting device further includes an InGaAs etching stop layer provided in contact with the lower side of the AlGaAs upper cladding layer. The InGaAs etching stop layer has a band gap greater than that of the active layer. | 09-25-2008 |
20090086785 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A semiconductor light emitting device is provided with a GaAs substrate, a quantum dot active layer formed over the GaAs substrate, a GaAs layer formed above or below the quantum dot active layer, and a diffraction grating formed from InGaP or InGaAsP and periodically provided along an propagating direction of light in the GaAs layer. | 04-02-2009 |
20090263926 | Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method - An active layer having a p-type quantum dot structure is disposed over a lower cladding layer made of semiconductor material of a first conductivity type. An upper cladding layer is disposed over the active layer. The upper cladding layer is made of semiconductor material, and includes a ridge portion and a cover portion. The ridge portion extends in one direction, and the cover portion covers the surface on both sides of the ridge portion. A capacitance reducing region is disposed on both sides of the ridge portion and reaching at least the lower surface of the cover portion. The capacitance reducing region has the first conductivity type or a higher resistivity than that of the ridge portion, and the ridge portion has a second conductivity type. If the lower cladding layer is an n-type, the capacitance reducing region reaches at least the upper surface of the lower cladding layer. | 10-22-2009 |
20110027926 | Optical semiconductor device having diffraction grating disposed on both sides of waveguide and its manufacture method - An active layer ( | 02-03-2011 |
20130267052 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a semiconductor light emitting device includes forming a lower cladding layer over a GaAs substrate; forming a quantum dot active layer over the lower cladding layer; forming a first semiconductor layer over the quantum dot active layer; forming a diffraction grating by etching the first semiconductor layer; forming a second semiconductor layer burying the diffraction grating; and forming an upper cladding layer having a conductive type different from that of the lower cladding layer over the second semiconductor layer, wherein the processes after forming the quantum dot active layer are performed at a temperature not thermally deteriorating or degrading quantum dots included in the quantum dot active layer. | 10-10-2013 |
20130267054 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND FABRICATION METHOD FOR SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes a lower cladding layer, an active layer, and an AlGaAs upper cladding layer mounted on a GaAs substrate. The semiconductor light emitting device has a ridge structure including the AlGaAs upper cladding layer. The semiconductor light emitting device further includes an InGaAs etching stop layer provided in contact with the lower side of the AlGaAs upper cladding layer. The InGaAs etching stop layer has a band gap greater than that of the active layer. | 10-10-2013 |
20150036964 | LIGHT SOURCE CIRCUIT AND LIGHT SOURCE DEVICE EQUIPPED WITH SAME - A light source circuit transmits light incident from a semiconductor laser source to a plurality of optical devices. At least one optical branch section is formed to branch one input-side optical waveguide at least into a first output-side optical waveguide terminal and a second output-side optical waveguide terminal. A light path length (L1) between the optical branch section and a next-stage optical branch section or the optical device is connected to the first output-side optical waveguide extending from the optical branch section and a light path length (L2) between the optical branch section and the next-stage optical branch section selected such that the absolute value of a difference between (L1) and (L2) is (¼+i/2) times (i is zero or a positive integer) the wavelength of the light transmitted through the light source circuit. | 02-05-2015 |
Patent application number | Description | Published |
20090052939 | IMAGE FORMING APPARATUS, AND CHARGING DEVICE AND PROCESS CARTRIDGE USED IN THE IMAGE FORMING APPARATUS - The invention provides a charging device used in an image forming apparatus such as a copier, a fax machine, a printer or the like, the charging device including: a gold-plated discharge wire for charging an image carrier such as a photoconductive member or the like; and a cleaning member, having an abrasive, for cleaning the discharge wire, with the gold plating being maintained over time satisfactorily, and provides a process cartridge having this charging device. The cleaning member has an abrasive containing alumina and/or silicon, the grain size of which ranges from #6000 to #8000. The discharge wire is a tungsten wire on which a plating film is formed by gold plating, such that the thickness of the plating film is not smaller than 1.5 μm, and the diameter of the tungsten wire is not smaller than 30 μm. | 02-26-2009 |
20090142574 | URETHANE FOAM MEMBER, SEAL STRUCTURE, TONER STORAGE CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS - A urethane foam member that after cutting into the desired shape from sheet urethane foam is applied with adhesive on one face of the urethane foam, an edge portion of the non-adhesive applied face at least at one side of the urethane foam member being of a low edge profile, to which permanent thermal distortion has been induced such that the thickness of the edge portion of the side is thinnest at the end portion thereof and the thickness gradually increases with distance from the end portion. | 06-04-2009 |
20110026992 | Image forming apparatus - In an image forming apparatus including a plurality of image forming devices, a first image forming device in which a leveling blade that functions as a lubricant leveling blade is easily worn away over time uses an obtuse-angle blade as a first leveling blade, and a second image forming device being other image forming device among the plurality of image forming devices uses a right-angle blade as a second leveling blade. | 02-03-2011 |
20110076075 | Lubricant applicator, image forming apparatus, and method of mounting lubricant applicator - A lubricant applicator includes: a lubricant application unit that is arranged so as to be in contact with a surface of an image carrier, scrapes a solid lubricant, and applies the solid lubricant onto the surface of the image carrier while moving a surface of the lubricant application unit; a lubricant holding member that holds the solid lubricant; and a lubricant biasing unit that biases the solid lubricant against the lubricant application unit. The lubricant biasing unit is housed in a housing under a state that one end of the lubricant biasing unit is held by the lubricant holding member so that a position of the one end of the lubricant biasing unit is restricted, and another end of the lubricant biasing unit is held by a biasing-unit holding member that is provided to restrict a position of the another end of the lubricant biasing unit. | 03-31-2011 |
20110097124 | Waste-toner collecting device, process cartridge, and image forming apparatus - A waste-toner collecting device includes a waste toner collector that collects and stores therein non-transferred toner as waste toner conveyed from a cleaning unit via the conveying path; and a leveling member that levels waste toner accumulated inside the waste toner collector, and drive of which is controlled so that driving conditions thereof are varied based on information of an image formed on the image carrier. The switching of the driving conditions of the leveling member is controlled so as to be performed after a delay time during which the non-transferred toner collected in the cleaning unit reaches the waste-toner collector via the conveying path. | 04-28-2011 |
20110123239 | Lubricant applicator, process unit including the lubricant applicator, transfer unit including the lubricant applicator, and image forming apparatus including the process unit or the transfer unit - A lubricant applicator includes a lubricant and a rotatable lubricant application member. The rotatable lubricant application member contacts the lubricant and an application target to apply the lubricant to the application target while rotating. The lubricant application member includes a core member, a first wound portion including a bristle member wound spirally around the periphery of the core member in a first direction, and a second wound portion including a bristle member wound spirally around the periphery of the core member in a second direction opposite the first direction in an axial direction of the core member. A process unit includes the lubricant applicator. A transfer device includes the lubricant applicator. An image forming apparatus includes at least one of the process unit and the transfer device and the lubricant applicator. | 05-26-2011 |
20110217101 | Lubricant applying device, process cartridge, and image forming apparatus - A lubricant applying device includes a solid lubricant, and a rotatable applying member scraping lubricant off the solid lubricant and applying the scraped lubricant onto an application subject. In the lubricant applying device, a pressing unit applies that applies an applying pressure of pressing the solid lubricant against the applying member and that varies the applying pressure in accordance with a rotation speed of the applying member. | 09-08-2011 |
20110274447 | PROCESS UNIT AND IMAGE FORMING APPARATUS INCLUDING SAME - A process unit including a first housing detachably attachable to an image forming apparatus, an image carrier to carry an image on a surface thereof, a charger to charge the surface of the image carrier, a developing device to form the image on the surface of the image carrier, a cleaning device to remove toner from the surface of the image carrier, a lubricant to be supplied to the surface of the image carrier, a lubricant container to contain the lubricant, and a waste toner container to store the toner removed from the surface of the image carrier. The first housing includes the image carrier and at least one of the charger, the developing device, and the cleaning device. The lubricant, the lubricant container, and the waste toner container together are detachably attachable to the first housing. | 11-10-2011 |
20110274474 | Lubricant applicator, process cartridge, transfer unit, and image forming apparatus - A lubricant applicator includes a solid lubricant, a lubricant applying member to apply the solid lubricant to a target object, a biasing member to bias the solid lubricant toward the lubricant applying member, and a regulating member to regulate the solid lubricant, which is biased toward the lubricant applying member by the biasing member, to prevent the lubricant from separating from the lubricant applying member by more than a predetermined distance. The regulating member is switchable between a regulating state for regulating the solid lubricant not to separate from the lubricant applying member by more than the predetermined distance and a non-regulating state. | 11-10-2011 |
20130243449 | LUBRICANT SUPPLYING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A lubricant supplying device includes: lubricant; a supplying member that supplies the lubricant to a lubricant supply target; and a remaining amount detecting unit that detects that a remaining amount of the lubricant is equal to or smaller than a certain amount. The remaining amount detecting unit includes a first electrode member and a second electrode member. The lubricant supplying device further comprises a member that causes at least a part of the second electrode member to move and causes the second electrode member to abut the first electrode member with an increase in consumption of the lubricant. | 09-19-2013 |
20130251380 | LUBRICANT SUPPLYING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - In an embodiment, provided is a lubricant supplying device that includes: a solid lubricant; a supplying member that supplies lubricant of the solid lubricant to a lubricant supplying target; and a remaining amount detecting unit that detects an amount of the solid lubricant being at a given amount or less. The remaining amount detecting unit is provided on a downstream side in a rubbing direction of the supplying member with respect to the solid lubricant. | 09-26-2013 |
20130251381 | LUBRICANT SUPPLYING DEVICE, AND IMAGE FORMING APPARATUS - In the present invention, a lubricant supplying device includes a lubricant end determining unit that determines that a solid lubricant is in an end state when the amount of a lubricant supplying operation reaches a threshold after a residual amount detecting unit detects that the residual amount of the solid lubricant is equal to or smaller than a predetermined amount. The lubricant end determining unit makes a threshold of the amount of the lubricant supplying operation at temperature or humidity of equal to or lower than a predetermined value lower than a threshold of the amount of the lubricant supplying operation at temperature or humidity of higher than the predetermined value. | 09-26-2013 |
20130279923 | LUBRICANT SUPPLYING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A lubricant supplying device includes: lubricant; a supplying member; a housing case; a pushing mechanism that includes a pair of swing members supported swingably in the housing case and a biasing unit urging the pair of swing members to swing; and a remaining amount detecting unit that detects that a remaining amount of the lubricant is equal to or smaller than a predetermined amount. The remaining amount detecting unit includes: first detection members provided at respective positions different from respective sliding areas of the member on which the swing members slide, on which sliding areas the respective swing members slide, and second detection members attached to the respective swing members such that the second detection members abut or face the respective first detection members when swing postures of the respective swing members reach respective swing postures corresponding to that the remaining amount of the lubricant is the predetermined amount. | 10-24-2013 |
20140010579 | IMAGE FORMING APPARATUS AND WASTE TONER CONVEYING DEVICE INCORPORATED IN SAME - An image forming apparatus includes a waste toner conveying device including a primary conveyor to convey waste toner discharged from a plurality of primary cleaners and a secondary conveyor to convey waste toner discharged from a secondary cleaner. A relay conveyor conveys the waste toner discharged from the primary conveyor and the secondary conveyor. A waste toner container receives the waste toner discharged from the relay conveyor. The primary conveyor, the secondary conveyor, and the relay conveyor are disposed at one end of the image forming apparatus in a front-to-rear direction thereof. A secondary conveyor outlet of the secondary conveyor is disposed below a primary conveyor outlet of the primary conveyor and above an inlet of the waste toner container. | 01-09-2014 |
20140037302 | LUBRICANT APPLICATOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A lubricant applicator includes a block of lubricant, a supply member contactable against the block of lubricant to scrape the block of lubricant, and a lubricant gauge to detect whether a remaining amount of lubricant is less than a threshold value. The lubricant gauge includes a rotary member rotatable about a pivot, a pressing member disposed opposite the rotary member to rotate the rotary member by pressing a contact part of the rotary member as the block of lubricant is consumed, and a detection part of the rotary member opposite to the contact part across the pivot of the rotary member. A length of the rotary member from the pivot to the detection part is longer than a length of the rotary member from the pivot to the contact part. | 02-06-2014 |
20140037303 | LUBRICANT APPLICATOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A lubricant applicator includes a block of lubricant, a supply member contactable against the block of lubricant to scrape the block of lubricant, and a lubricant gauge including a first electrode and a second electrode. The lubricant gauge is electrically connected to the first electrode and the second electrode to detect whether an amount of lubricant remaining is less than a threshold value based on establishment of electrical continuity between the first electrode and the second electrode. One of the first electrode and the second electrode includes a projection projecting toward the other one of the first electrode and the second electrode. | 02-06-2014 |
20140147170 | IMAGE CARRIER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An image carrier includes a tubular image carrier body to carry an image on an outer circumferential surface thereof, a shaft disposed inside the image carrier body, a first flange mounted on the shaft, and a second flange spaced apart from the first flange in an axial direction of the image carrier and mounted on the shaft. Each of the first flange and the second flange includes a through-hole contacting the shaft, a first engagement portion to engage a lateral end of the image carrier body in the axial direction of the image carrier, and a second engagement portion, constituting at least a part of the through-hole, to engage the shaft. The second engagement portion is disposed inboard from the first engagement portion in the axial direction of the image carrier. | 05-29-2014 |
20140199091 | DETACHABLE UNIT AND IMAGE FORMING APPARATUS INCORPORATING SAME - A detachable device, which can be included in an image forming apparatus, includes a unit drive mechanism, and a cover disposed at one end and an opposite end in the given attachment/detachment direction to cover the unit drive mechanism thereof. The cover includes a first cover and a second cover. The first cover includes at least one first inlet port to intake air from the apparatus body and guide the air to the detachable unit. The second cover includes a second inlet port to intake the air guided into the detachable unit and an air outlet port to exhaust the air introduced from the second inlet port to the apparatus body. | 07-17-2014 |
20140270881 | LUBRICANT SUPPLY DEVICE, PROCESS UNIT, IMAGE FORMING APPARATUS, AND PROCESS UNIT MANUFACTURING METHOD - A lubricant supply device includes a solid lubricant, a lubricant holder to hold the solid lubricant, a lubricant supply member to supply lubricant to a lubrication target, a pressing member to press the solid lubricant toward the lubricant supply member, and a pressing force adjuster to change an amount of pressing force exerted by the pressing member. | 09-18-2014 |
20140363178 | LUBRICANT SUPPLY SYSTEM, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A solid lubricant supply system includes a solid lubricant supplier to receive and supply solid lubricant to a solid lubricant supplying target. A pair of first and second moveable planar electrodes is opposed to each other. The second moveable planar electrode is partially moved toward the first moveable planar electrode as the solid lubricant is consumed. A residual solid lubricant quantity detecting unit is provide to detect a quantity of the residual solid lubricant at a first stage, in which the residual solid lubricant quantity is below a given level, by detecting electric conduction between the pair of first and second moveable planar electrodes when the pair of first and second moveable planar electrodes contacts each other. The first moveable planar electrode is enabled to further move together with the second moveable planar electrode when it is contacted and pressed by the second moveable planar electrode. | 12-11-2014 |