Ricoh Company, Ltd.

Nec Corporation

Alps Electric Co., Ltd.

Nec Toppan Circuit Solutions, Inc.

Fujitsu Corporation

Sharp Kabushiki Kaisha Corporation

Toyo Gosei Co., Ltd.

Other

Daido Kogyo Co., Ltd.

Nec Toppan Circuit Solutions, Lnc.

Hideo Kikuchi

Tamaki Kaneko

Sunao Ikeda

Kunio Hibi

Yohtaro Kakitani

Tugio Okuzawa

Masanobu Mizusaki

Yuichiro Yamada

Naoki Sato

Satoshi Enomoto

Yuki Hara

Youhei Nakanishi

Yuzo Shimada

Takeshi Noma

Sakae Kitajo

Masahide Nakaya

Hikaru Kouta

Mikio Oda

Yutaka Akimoto

Junichi Sasaki

Takashi Nakashima

Shigenori Baba

Toshiyuki Kaneko

Hitoshi Ikeda

Arata Yato

Satoshi Nakamura

Hiroshi Aoki

Hidenori Suzuki

Hideaki Mochimaru

Tetsu Tanizawa

Yasuhisa Ehara

Hiroshi Yoshizawa

Takahiro Shimizu

Hideki Kikuchi

Yoshio Shimada

Kiminori Ishido

Keiji Nagano

Takundo Isobe

Yoshio Matsumoto

Tsunehide Takahashi

Masayuki Ohtani

Mitsuo Saitou

Kazuhiro Kinoshita

Masato Nakatani

Yoshimasa Yamamoto

Toshiyuki Shima

Kiyohiko Kaiya

Takeshi Shimotsu

Yasushi Utsumi

Hiroshi Kawai

Chikayuki Higashide

Megumi Nishino

Yoshihiro Kitamura

Haruyoshi Takaoka

Shoji Sato

Shinichi Tamabayashi

Sadao Tsutsumi

Seiji Suda

Akira Kaneko

The present invention increases received electrical power received by a power receiving coil by stably increasing a resonance current in the power receiving coil of a wireless power transmission system. The present invention makes use of the wireless power transmission system comprising: a power transmitting coil for generating a magnetic field via an alternating current and a power receiving coil for generating an induced voltage via electromagnetic induction of the power transmitting coil; a power receiving resonant circuit formed by connecting a resonance capacitance to the power receiving coil; a control means for controlling in which the resonance current in the power receiving resonant circuit is matched to a target value; a power receiving coil current control circuit that is controlled by the control means and applies electrical power to the power receiving resonant circuit to increase the resonance current; and a load circuit for receiving power from the power receiving resonant circuit, wherein the power receiving coil current control circuit operates by being supplied with electrical power applied to the power receiving resonant circuit from the load circuit.

Wireless power transmission system

The present invention provides a composition for forming a liquid crystal layer which enables to achieve takt time reduction and high display quality. The liquid crystal display device according to the present invention includes a liquid crystal material, and a monomer, the monomer being a compound having a structure that generates ketyl radicals when undergoing a hydrogen abstraction reaction caused by exposure to light.

Composition for forming liquid crystal layer, liquid crystal display device, and method for producing liquid crystal display device

An image forming apparatus is disclosed that includes a power storage unit. The power storage unit includes a constant voltage generation part configured to generate a constant voltage from a commercial power supply, the constant voltage generation part being connected to an external apparatus operating by consuming power; a voltage increasing circuit configured to increase the constant voltage generated by the constant voltage generation part; a capacitor configured to store an electric charge supplied from the voltage increasing circuit; a circuit control part configured to control charging of the capacitor; and an output part configured to output power stored in the capacitor, the power having a voltage different from the constant voltage.

Image forming apparatus

The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of less than 50%.

Liquid crystal display device and process for producing liquid-crystal display device

The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of 50% or more.

Liquid crystal display device and process for producing liquid crystal display device

The present invention provides a liquid crystal display device in which image sticking seldom occurs. The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, and the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light.

Several aspects of the present invention provide a liquid crystal composition capable of shortening the takt time and achieving excellent display qualities, and a liquid crystal display device and a method for producing a liquid crystal display device which use the liquid crystal composition. The liquid crystal composition of several aspects of the present invention includes a liquid crystal material and one or more kinds of radical polymerizable monomers, at least one kind of the radical polymerizable monomers being a compound generating radicals through a self-cleavage reaction by exposure to light and having at least two radical polymerizable groups.

Liquid crystal composition, liquid crystal display device, and method for producing liquid crystal display device

To provide an induced power transmission circuit that transmits, from a transmission antenna () connected to a power supply circuit, an AC power having an angular frequency &#x3c9; to a spaced reception antenna () with an excellent efficiency, thereby transmitting it to a load circuit. The induced power transmission circuit comprises a circuit the two ends of which are coupled by a capacitor (C) and in which the power supply circuit is connected in series to a midway port () (P) of the transmission antenna () having an effective self-inductance L; and a circuit the two ends of which are coupled by a capacitor (C) and in which the load circuit is connected in series to a midway port () (P) of the reception antenna () having an effective self-inductance L; wherein for a coupling coefficient k of the electromagnetic induction between the antennas and for a phase angle &#x3b2; having an arbitrary value, the angular frequency &#x3c9; is set to the square root of the reciprocal of a value of L&#xd7;C&#xd7;(1+k*cos(&#x3b2;)), the output impedance of the power supply circuit is set to approximately k&#x3c9;L*sin(&#x3b2;), and the input impedance of the load circuit is set to approximately k&#x3c9;L*sin(&#x3b2;). There is also provided an impedance converting circuit that converts the circuit impedances.

Induced power transmission circuit

A step-down circuit lowers a voltage outputted from a commercial power supply. A step-down-output control and charge control circuit controls a step-down voltage and charges a capacitor bank based on a step-down voltage outputted. A constant-voltage generating circuit generates a constant voltage based on an output of the capacitor bank or an output of the step-down circuit. An image-forming-apparatus control circuit supplies the constant voltage to a load that performs an image forming operation.

Image forming apparatus, power supply device, and control method

A power supply device supplies power to an image forming apparatus. The image forming apparatus includes a load and a control unit. The load requires power, and is controlled by the control unit. The power supply includes a capacitor and a power-supply unit. The capacitor is charged by an external power source, and dischargably stores therein power. The power-supply unit provides power supply from the capacitor to the load and the control unit before voltage of the external power source drops below a threshold level where malfunction of the image forming apparatus occurs. After the voltage recovers to the threshold level, the power-supply unit stops the power supply from the capacitor.

Power supply device, image forming apparatus, and power supply method

A first switching unit and a second switching unit are connected in series to an electric power load. A voltage supply unit, which is connected between the first switching unit and the second switching unit, supplies a voltage to the second switching unit. A determining unit determines an occurrence of a malfunction in at least one of the first switching unit and the second switching unit.

Power control device and image forming apparatus

An image formation unit detached to an image forming apparatus integrally mounts at least one replacement member, and a nonvolatile memory. The nonvolatile memory stores recycle information related to the replacement member to be used when the image formation unit is recycled.

Image forming apparatus and associated method of tracking recycling information

A novel device unit is detachably provided to an image forming apparatus having a control unit configured to control the image forming apparatus. The device unit includes a CPU configured to communicate with the control unit; and a memory configured to store property information including information provided through a communication between the CPU and the control unit. The memory includes a write-prohibited area configured to prohibit an information overwriting; a first writable area configured to allow an information writing; and a second writable area configured to controllably allow a one time information overwriting. A recycling system includes a reader/writer configured to communicate with an IC tag provided to the device unit, and a personal computer configured to communicate with the IC tag via the reader/writer and to perform a recycle processing of the device unit.

Device unit, an image forming apparatus, a management system, and a recycling system capable of using non-genuine device unit as replacement product

An image forming apparatus includes image forming units, a toner supply device, a common-unit detection device, an initial operation execution device, and a determination device. Each image forming unit is detachably provided in the image forming apparatus, and includes at least a development device containing toner. At least two of the image forming units are common image forming units having a common structure. When the common-unit detection device detects a common image forming unit at installation thereof, the initial operation execution device supplies a predetermined amount of toner to a development device of the common image forming unit and mixes to charge the toner by friction for a predetermined time period. Then, the. determination device detects whether the toner in the development device is charged to a predetermined level, and determines, based on the detection, whether to mix the toner one more time for another predetermined time.

Image forming method and apparatus capable of effectively performing charging operation

Growing community of inventors

Tokyo, Japan

Hideo Kikuchi