摘要:
A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
摘要:
A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
摘要:
A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
摘要:
An image forming apparatus comprising: a plurality of housing units that houses toners of mutually different colors, at least one toner inside of the plurality of housing units being to be used for forming a toner image on a recording medium; and a fixing unit configured to fix the toner image on the recording medium to the recording medium, wherein a housing unit among the plurality of housing units that houses a toner with a lowest peak temperature of loss elastic modulus is disposed in a portion with a lower temperature than a temperature of a portion where another housing unit is disposed, or in a position farther from the fixing unit than a portion where another housing unit is disposed.
摘要:
An image forming apparatus that has a monochrome mode and a full color mode as image forming modes, includes: a power supply unit configured to supply power thereto; a main power switch configured to turn on and off the power supply unit; a mode switching unit configured to selectively and manually be switched between the monochrome mode and the full color mode, wherein the main power switch and the mode switching unit are integrally formed as one mode switch; a power supply interrupting unit configured to interrupt power supply to a part that is necessary to form an image in a mode other than the monochrome mode, when the mode switch is set to the monochrome mode.
摘要:
A developing device includes a developer bearing member, a developer supplying conveyer, a developer receiving conveyer and a developer agitating conveyer. The developer supplying conveyer or the developer receiving conveyer has at least one dividing position. The dividing position is a position at which the conveying direction of the developer reverses, and a position which is arranged so that if the dividing position is projected to the developer bearing member along a plane which is perpendicular to the widthwise direction of the developer bearing member, the projected position on the developer bearing member is within an area in which the developer is borne on the developer bearing member.
摘要:
A developing device includes a developer bearing member, a developer supplying conveyer, a developer receiving conveyer and a developer agitating conveyer. The developer supplying conveyer or the developer receiving conveyer has at least one dividing position. The dividing position is a position at which the conveying direction of the developer reverses, and a position which is arranged so that if the dividing position is projected to the developer bearing member along a plane which is perpendicular to the widthwise direction of the developer bearing member, the projected position on the developer bearing member is within an area in which the developer is borne on the developer bearing member.
摘要:
An image forming apparatus includes an image carrier; an exposing unit that exposes the image carrier to light to form an electrostatic latent image on the image carrier; a developing unit that has at least a toner, and develops the electrostatic latent image formed on the image carrier as a toner image; a transfer unit that transfers the toner image onto a recording medium; a fixing unit that fixes the toner image transferred on the recording medium; an exposure-energy modulating unit that modulates exposure energy of the exposing unit; and a development-time detecting unit that detects operation time of the developing unit. The exposure-energy modulating unit modulates the exposure energy based on a result of detection by the development-time detecting unit.
摘要:
An image forming apparatus includes a pseudo half tone processing unit that performs a pseudo half tone process on input image data to generate output image data. An exposure unit executes light modulation of a plurality of light emitting sources based on the output image data. The exposure unit performs writing in such a way that different numbers of light emitting sources are used when writing a character/line image and a picture image or a graphics image. The pseudo half tone processing unit performs pseudo half tone processes with different resolutions on a character/line image and a picture image or a graphics image based on the numbers of the light emitting sources to be used for the writing by the exposure unit.
摘要:
An image forming apparatus including an image carrier having a conductive support, at least a photoconductive layer formed on the conductive support, and a surface protection layer formed on the photoconductive layer and including a charge injection layer. Also included is a charging member for charging the image carrier in contact with the surface protection layer when applied with a voltage, and a developing unit for developing a latent image formed on the image carrier with toner to thereby produce a corresponding toner image. Further, the surface protection layer has a diamond-like carbon structure or an amorphous structure containing hydrogen, the developing unit develops the latent image with a magnet brush formed by magnetic particles for development, and the charging member includes magnetic particles for charging having a mean particle size smaller than a mean particle size of the magnetic particles for development. Also, the surface protection layer has a volume resistance of 109 &OHgr;·cm to 1012 &OHgr;·cm and a Knoop hardness of 400 kg/mm2 or greater, and a light transmission of the surface protective layer is 50% or more of a wavelength of light used for exposing the image carrier.