Patents by Inventor Hideaki Hasegawa
Hideaki Hasegawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9134643Abstract: The image forming apparatus is capable of executing a color mode for forming images of a plurality of colors using the plurality of developer bearing members, and a mono-mode for forming images of mono color using one developer bearing member of the plurality of developer bearing members. The control unit, when the color mode is executed, determines the charging bias and, the first laser power and the second laser power for respective image bearing members, based on information about the plurality of image bearing members. The control unit, when the mono-mode is executed, determines the charging bias and, the first laser power and the second laser power to image bearing member for mono-mode, based on information about image bearing member for mono-mode.Type: GrantFiled: April 19, 2013Date of Patent: September 15, 2015Assignee: Canon Kabushiki KaishaInventors: Takayoshi Kihara, Motoki Adachi, Hideaki Hasegawa
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Patent number: 9128405Abstract: An image forming apparatus includes a plurality of image forming stations and a control portion configured to control an image forming operation. Each of the image forming stations includes an image bearing member configured to form a toner image on a surface thereof and a charging device configured to charge the image bearing member. The toner images formed on the image bearing members of the image forming stations are sequentially transferred to a transfer incurring member to be superimposed. The control portion sets a voltage applied to the charging device in forming an image in an image forming station which performs the transfer later based on image density information of the toner image transferred to the transfer incurring member by an image forming station which performs the transfer earlier in a sequence of the image forming operations.Type: GrantFiled: December 9, 2013Date of Patent: September 8, 2015Assignee: Canon Kabushiki KaishaInventors: Shuichi Tetsuno, Hideaki Hasegawa, Takuya Kitamura
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Publication number: 20150234309Abstract: An image forming apparatus includes a photosensitive member, a charging unit, an image exposure unit configured to form image portion potential by exposing the photosensitive member to light, a weak exposure unit configured to form non-image portion potential by exposing the photosensitive member to weak light having a lower exposure amount than the light for forming the image portion potential, and a developer bearing member configured to carry developer, wherein a relationship of Ldev<Lvd<Lbg is satisfied, where the photosensitive member exposed to the weak light by the weak exposure unit has a weak exposure area having a length of Lbg in a photosensitive member longitudinal direction, a length of the developer carried by the developer bearing member in the photosensitive member longitudinal direction is Ldev, and the photosensitive member charged by the charging unit has a charging area having a length of Lvd.Type: ApplicationFiled: May 5, 2015Publication date: August 20, 2015Inventors: Yasunari Watanabe, Hideaki Hasegawa
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Patent number: 9104130Abstract: An image forming apparatus including: photosensitive members; charging devices to which a common charging power source applies a charging voltage to charge the photosensitive members; an exposure device configured to expose the photosensitive members; developing devices to form developer images on the photosensitive members; a transfer device to transfer the developer images onto a transfer medium; and a control portion configured to set a lower limit value of the charging voltage for each photosensitive member, apply the charging voltage having a magnitude not less than any lower limit value from the charging power source to the charging devices, control the output of the laser power for each photosensitive member individually, and set, based on the image density of the developer image transferred onto the transfer medium earlier, the lower limit value for a photosensitive member on which a developer image to be transferred onto the transfer medium later is formed.Type: GrantFiled: November 20, 2013Date of Patent: August 11, 2015Assignee: Canon Kabushiki KaishaInventors: Hideaki Hasegawa, Takuya Kitamura, Shuichi Tetsuno
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Patent number: 9070340Abstract: There is provided a driving device of a display device, including: a first switching portion; a second switching portion; and a control section that, when the potential of a drive signal line is lower than a target potential, operates the first switching portion by using, as a first reference potential, a potential that is less than or equal to the target potential and that is closest to the target potential, among predetermined n types (n?1) of potentials, and, when the potential of the drive signal line is higher than the target potential, operates the second switching portion by using, as a second reference potential, a potential that is greater than or equal to the target potential and that is closest to the target potential, among the n types of potentials.Type: GrantFiled: September 30, 2011Date of Patent: June 30, 2015Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventors: Hideaki Hasegawa, Hiroyoshi Ichikura, Kazuhide Aoyama
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Patent number: 9069278Abstract: An image forming apparatus can switch between a color mode, in which an image is formed by sequentially transferring color toner images formed by developing members in an overlapping manner, and a mono mode, in which an image is formed by using one developing member. The developing member used in the mono mode develops the toner image to be transferred secondly or thereafter in the color mode, an exposure device exposes a non-image portion where the toner image is not formed on the surface of an image carrier at an exposure amount smaller than an exposure amount for an image portion where the toner image is formed, and, in the mono mode, the exposure amount at which the exposure device exposes the non-image portion of the image carrier in the case the image is formed in the mono mode is smaller than the color mode.Type: GrantFiled: April 19, 2013Date of Patent: June 30, 2015Assignee: Canon Kabushiki KaishaInventors: Motoki Adachi, Hideaki Hasegawa, Takayoshi Kihara
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Patent number: 9052670Abstract: In a color image forming apparatus, the amount of light of an exposure unit for a weak exposure is changed according to a remaining service life of a photosensitive drum when the weak exposure is performed for the background area of a corresponding photosensitive drum by using the exposure unit.Type: GrantFiled: August 5, 2014Date of Patent: June 9, 2015Assignee: Canon Kabushiki KaishaInventors: Masaru Shimura, Hideo Nanataki, Shinsuke Kobayashi, Shinji Katagiri, Yasunari Watanabe, Hideaki Hasegawa, Kiyoto Toyoizumi, Kouji Yasukawa
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Patent number: 9054486Abstract: An optical amplifier device comprising an input/output section that inputs incident light and outputs emission light; a polarized light splitting section that causes a polarized light component of the incident light input from the input/output section to branch, and outputs first polarization mode light having a first polarization and second polarization mode light having a second polarization different from the first polarization; a polarization converting section that receives the first polarization mode light, converts the first polarization to the second polarization, and outputs first polarization converted light; and an optical amplifying section that amplifies the first polarization converted light input to one end of a waveguide, outputs the resulting amplified first polarization converted light from another end of the waveguide, amplifies the second polarization mode light input to the other end of the waveguide, and outputs the resulting amplified second polarization mode light from the one end of tType: GrantFiled: November 25, 2013Date of Patent: June 9, 2015Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Hideaki Hasegawa, Masaki Funabashi, Kazuaki Kiyota, Takeshi Akutsu, Noriyuki Yokouchi, Kazutaka Nara
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Patent number: 9046809Abstract: An image forming apparatus includes a photosensitive member, a charging unit, an image exposure unit configured to form image portion potential by exposing the photosensitive member to light, a weak exposure unit configured to form non-image portion potential by exposing the photosensitive member to weak light having a lower exposure amount than the light for forming the image portion potential, and a developer bearing member configured to carry developer, wherein a relationship of Ldev<Lvd<Lbg is satisfied, where the photosensitive member exposed to the weak light by the weak exposure unit has a weak exposure area having a length of Lbg in a photosensitive member longitudinal direction, a length of the developer carried by the developer bearing member in the photosensitive member longitudinal direction is Ldev, and the photosensitive member charged by the charging unit has a charging area having a length of Lvd.Type: GrantFiled: December 4, 2012Date of Patent: June 2, 2015Assignee: Canon Kabushiki KaishaInventors: Yasunari Watanabe, Hideaki Hasegawa
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Patent number: 9042744Abstract: An image forming apparatus includes a rotatable photosensitive member, an exposure unit for exposing a surface of the photosensitive member to light, and a detecting portion for detecting a lifetime of the photosensitive member on the basis of a thickness of a charge transporting layer of the photosensitive member and an amount of the light received by the charge transporting layer of the photosensitive member.Type: GrantFiled: May 16, 2013Date of Patent: May 26, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Motoki Adachi, Hideaki Hasegawa, Takayoshi Kihara
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Publication number: 20150138025Abstract: Disclosed is an NFC antenna that facilitates a touch operation of a portable electronic instrument. An NFC antenna includes insulating substrates and an antenna coil having a front surface pattern and a back surface pattern formed on antenna surfaces that are present on the same planes. The insulating substrates are molded into an L shape together with a magnetic sheet sandwiched therebetween. The antenna coil is also arranged in the L shape in a similar manner. When the NFC antenna is arranged at a corner of a smart phone, a coil opening faces to a position of a touch corner. NFC can be started in a short time by a touch operation using the touch corner.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Inventors: Hideto Horikoshi, Hideaki Hasegawa
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Publication number: 20150138254Abstract: Disclosed is a display unit driving device which has a reduced power consumption rate. The display unit displays an image in response to a video data signal which is constituted by a plurality of frames each including a data scanning period and a blanking period. The driving device stops power supply to a data driver for a predetermined power stop period within the blanking period. The data driver applies pixel drive voltages respectively corresponding to luminance levels of each pixel based on the video data signal to multiple data lines of the display device in each horizontal scanning cycle within the data scanning period.Type: ApplicationFiled: November 20, 2014Publication date: May 21, 2015Applicant: LAPIS Semiconductor Co., Ltd.Inventors: Akira NAKAYAMA, Hideaki HASEGAWA
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Publication number: 20150138261Abstract: A driving device for driving a display unit which can reduce power consumption regardless of the type of video data is provided which, based on the type of application software which is the provider of a video data signal, performs either one of a first power saving mode in which to stop power delivery to a data driver and a second power saving mode in which the data driver stops importing of the pixel data sequence signal when the 1-H line data's respectively corresponding to neighboring ones of horizontal scan lines of the display unit coincide with each other.Type: ApplicationFiled: November 20, 2014Publication date: May 21, 2015Applicant: LAPIS SEMICONDUCTOR CO., LTD.Inventors: Akira NAKAYAMA, Hideaki HASEGAWA
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Publication number: 20150138259Abstract: A device and method for controlling a semiconductor memory capable of suppressing deterioration in reliability of read-out data are provided. A drive controller generates pixel data sequence signals which indicate luminance levels of respective pixels based on a video data signal. A data driver generates pixel drive voltages corresponding to the luminance levels of the respective pixels on the basis of the pixel data sequence signals, and supplies the pixel drive voltages to data lines of the display unit. When the video data signal of one frame matches or substantially coincides with the video data signal of another frame which is directly succeeding to the particular one frame in time sequence, supply of the pixel data sequence signals to the data driver is stopped.Type: ApplicationFiled: November 20, 2014Publication date: May 21, 2015Applicant: LAPIS SEMICONDUCTOR CO., LTD.Inventors: Akira NAKAYAMA, Hideaki HASEGAWA
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Publication number: 20150132029Abstract: A regulating member for regulating a developer amount carried on a developer carrying member includes a plate-like supporting member having an elasticity, the supporting member being provided with a fixed portion for being fixed to a fixed part; a first contact portion contactable to the developer carrying member, the first contact portion protruding from the regulating member from a side of the supporting member; and a second contact portion contactable to and the developer carrying member, the second contact portion being at a position closer to the fixed portion than the first contact portion.Type: ApplicationFiled: January 12, 2015Publication date: May 14, 2015Inventors: Takashi Kase, Hideaki Hasegawa
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Patent number: 9025327Abstract: Some embodiments of the present invention include a portable tablet folio stand that is designed for use in multiple modes. The stand can allow a user to view the tablet from multiple angles, such as a movie viewing angle and a working angle. In the movie viewing angle, the tablet is optimally positioned for viewing the tablet screen, for instance to watch videos. In the working angle, the tablet is optimally positioned for performing tasks such as typing on the tablet. In some embodiments, the tablet stand can be configured to be portable and detachably coupled to a keyboard.Type: GrantFiled: June 29, 2012Date of Patent: May 5, 2015Assignee: Lenovo (Singapore) Pte. Ltd.Inventors: Hiroyuki Noguchi, Eiji Shinohara, Hideaki Hasegawa, Hisashi Shima, Tomoyuki Takahashi, Aaron Michael Stewart
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Publication number: 20150103853Abstract: A semiconductor laser module includes: a semiconductor laser element having at least one semiconductor laser; a first support member on which the semiconductor laser element is mounted; a first temperature-adjusting element adjusting a temperature of the first support member; a semiconductor optical element having a semiconductor optical amplifier amplifying a laser light outputted from the semiconductor laser element; and a second support member on which the semiconductor optical element is mounted.Type: ApplicationFiled: November 24, 2014Publication date: April 16, 2015Applicant: Furukawa Electric Co., Ltd.Inventors: Tatsuro KUROBE, Tatsuya KIMOTO, Hideaki HASEGAWA
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Patent number: 9007292Abstract: A driver circuit for driving a display panel is formed on a substrate and is organized into two families of sections. Each section includes a logic circuit, a level shifter, a decoder, an operational amplifier, and an output pad. In the first family, each section is laid out in the stated sequence (logic circuit, level shifter, decoder, operational amplifier, output pad). In the second family, each section is laid out in a different sequence: output pad, operational amplifier, logic circuit, level shifter, decoder. The output pads in the two families of sections are located on opposite sides of the substrate, and every output pad is adjacent to the operational amplifier to which it is connected. This arrangement reduces signal-to-signal variations in the output characteristics of the driver circuit and improves the slew rate of the output signals.Type: GrantFiled: March 28, 2012Date of Patent: April 14, 2015Assignee: LAPIS Semiconductor Co., Ltd.Inventors: Junko Ikari, Hideaki Hasegawa
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Patent number: 9001174Abstract: The image forming apparatus includes a photosensitive drum and a light emitting device. In the rotational axis direction of the photosensitive drum, the width of the weak light exposure region on the photosensitive drum in which an exposing device emits weak light is larger than the width of a region corresponding to the width of a recording medium on which an image is formed, but smaller than the width of a region on the photosensitive drum charged by a charging roller.Type: GrantFiled: February 28, 2013Date of Patent: April 7, 2015Assignee: Canon Kabushiki KaishaInventors: Shinji Katagiri, Masaru Shimura, Hideo Nanataki, Shinsuke Kobayashi, Kiyoto Toyoizumi, Yasunari Watanabe, Hideaki Hasegawa
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Publication number: 20150085913Abstract: A data receiving circuit that can accurately obtain a data signal corresponding to information data from a high speed high density transmitted signal, and a semiconductor device including the data receiving circuit. The amplitude of a first differential signal corresponding to a level difference between a pair of received differential signals, generated in a first differential stage, is amplified and binalized to obtain a received data signal. A second differential signal corresponding to the level difference between the received differential signals, and a third differential signal which is a phase-inverted signal of the second differential signal are generated in a second differential stage provided separately, and a current corresponding to the second differential signal and a current corresponding to the third differential signal are discharged into the respective ones of the pair of transmission lines, thereby suppressing the amplitudes of the received differential signals.Type: ApplicationFiled: December 4, 2014Publication date: March 26, 2015Applicant: LAPIS SEMICONDUCTOR CO., LTD.Inventors: Hideaki HASEGAWA, Kouji TAKEDA