Canon Kabushiki Kaisha

Riso Kagaku Corporation

Sony Corporation

Thomas & Betts Corporation

Nippon Kayaku Kabushiki Kaisha

Sansui Electric Co., Ltd.

Renesas Technology Corp.

Asahi Kogaku Kogyo Kabushiki Kaisha

Other

Nippon Telegraph and Telephone Corporation

Nippon Electric Co., Ltd.

Thomas & Betts International LLC

Toyo Engineering Corporation

Koken Ltd.

Oriental Photo Industrial Co., Ltd.

Masao Suzuki

Tetsuro Fukui

Kenji Kagami

Katsuya Nishino

Motokazu Kobayashi

Tsutomu Takayama

Takashi Matsui

Akihiro Mouri

Kenji Aoki

Masato Katayama

Kazuo Isaka

Kenta Kamikura

Tsutomu Shimano

Reo Tagawa

Seiji Hashimoto

Kazunori Ueno

Hitoshi Arai

Yuji Sakaegi

Akihiko Tojo

Naoya Isono

Tetsuya Higuchi

Toshio Kaji

Kazuyuki Matoba

Tadashi Shirai

Takehiko Ooi

Hiromi Tanaka

Hamao Umezawa

Hiroshi Kondo

Teruo Hieda

Takeshi Ogawa

Norihiro Nanba

Takayuki Toyoda

Miki Tamura

Takaaki Aoyagi

Kazuyuki Sato

Taku Yamagami

Kenichi Kondo

Tetsushi Saino

Yasuyuki Yamazaki

Hideo Nagano

Hitoshi Narita

Rinzo Nishizawa

Tomoya Nagaoka

Yasuhiro Fujimoto

Hirofumi Kyuushima

Hiroshi Kaneda

Saburo Nakazato

Hiroyuki Sunagawa

Susumu Nakamura

Phyo Kim

Masakazu Koiso

Keisuke Aoyagi

Atsushi Inoue

Takeshi Yamamoto

Noriyuki Fukushima

Nobuo Fukushima

Shigeo Yamagata

Nobuhiro Takeda

Masashi Hirose

Tadashi Okino

Yasuaki Murai

Yasunori Chigono

Atsushi Nakamoto

Masato Ikeda

Takahiro Kawamoto

Ryosuke Miyamoto

Masayoshi Kato

Kyo Miura

Yoshiro Udagawa

Keiichiro Tsubaki

Makoto Fukatsu

Hideo Sugimura

Ryoji Kubo

Maki Okajima

Tadao Nakagawa

Hideaki Inoue

Masashi Hori

Muneaki Kawai

Shingo Tatsumi

Yasuhisa Tashiro

Takao Sasakura

Tsuneo Tsukahara

Taketo Suzuki

Kunio Ninomiya

Yasuhiro Ishikawa

Makoto Miyaki

Hiroshi Watanabe

Hideaki Yamaki

Takahiro Uchibori

Osamu Kakurai

Hirotaka Kaneda

Takehiko Ohi

Yoshitaka Sugimoto

Hiroyuki Sumiya

Shohei Fukuya

Izuru Kumagai

Kobayashi Motokazu

Masato Kotayama

Hiromi Ueda

Tsutomu Kamoto

A toner comprising a toner particle comprising a binder resin, and an external additive, wherein the toner particle further comprises a monohydric aliphatic alcohol, the monohydric aliphatic alcohol has 8 to 18 carbon atoms, a content ratio of the monohydric aliphatic alcohol extracted from the toner with ethanol is 30 to 300 ppm by mass in the toner, and the external additive comprises at least one selected from the group consisting of hydrotalcite particles and alumina particles.

Toner

A toner comprising a toner particle comprising a binder resin, wherein the toner particle further comprises a compound represented by a following formula (1) and a pigment having a quinacridone structure;

Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP, SPand SP, respectively, the formulae 0.60&#x2264;(SP&#x2212;SP)&#x2264;15.00 and SP&#x3c;SP&#x3c;(SP+3.00) are satisfied.

Toner and method for producing toner

Provided is a toner external additive containing a base material, wherein the base material is surface-treated with an isocyanurate ring-bearing silane coupling agent, and a toner including a toner particle and a toner external additive on a surface of the toner particle, wherein the toner external additive is the aforementioned toner external additive.

Toner external additive and toner

The toner has a toner particle in which a toner core containing a binder resin is coated with a shell layer, wherein the binder resin contains a polymer A that has a first monomer unit and a second monomer unit; the first unit is derived from (meth)acrylate ester having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer is 5.0 to 60.0 mol %; the content of the second monomer unit is 20.0 to 95.0 mol %; the following formula (1) is satisfied when the SP value of the first unit is denoted by SPand the SP value of the second unit is denoted by SP; and the toner core is coated with a highly uniform shell over at least 90% of the circumference of the toner cross section;3.00&#x2264;()&#x2264;25.00&#x2003;&#x2003;(1).

A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a Calkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SPand an SP value of the second monomer unit is taken as SP, the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000.3.00&#x2264;(SP&#x2212;SP)&#x2264;25.00&#x2003;&#x2003;(1)

Provided is a toner having a toner particle that contains a binder resin and a wax, wherein the solubility parameter Sof the binder resin is at least 9.4 and not more than 10.0; the binder resin contains a resin having a structure represented by the following formula (1) in the terminal position on a main chain of the resin,*&#x2014;CO&#x2014;R&#x2003;&#x2003;formula (1)(in formula (1), R represents a phenyl group or a derivative thereof, or &#x2014;COOR, Rrepresents an alkyl group having 1 to 4 carbons, and * represents a bond to the main chain of the resin); the solubility parameter Sof the wax is at least 8.1 and not more than 9.0; and Sand Ssatisfy formula (2),||&#x3e;0.5&#x2003;&#x2003;formula (2).

Toner and method of producing toner

A toner comprising a toner particle that contains a binder resin, wherein the surface of the toner particle is covered with a resin A; the modulus of elasticity Ea of the resin A and the modulus of elasticity Eb of the binder resin satisfy the following formula:0.5&#x2264;()&#xd7;100&#x2264;50.0; andthe adhesion force Aof the toner particle is at least 500 nN when a probe having spherical SiOattached at the tip of a cantilever is pressed into the toner particle at 3 &#x3bc;N.

A drive control device includes: a driver including a circuit and configured to drive a motor; and a controller configured to control the driver. The controller is configured to: in a period other than a stop period during driving of the motor, control the driver by a PWM control of a synchronous rectification type, the stop period lasting for a specified time or longer during the driving of the motor; and in the stop period during the driving of the motor, suspend the PWM control of the synchronous rectification type and control the driver such that the motor is set to a short-circuit brake state or a disconnected state.

Drive control device using PWM control of synchronous rectification type

A drive control device include a processor and a memory including instructions that, when executed by the processor, cause the processor to perform operations. The operations include: comparing a rotation speed of a motor driven by a PWM control of a synchronous rectification type and a target value of the rotation speed and calculating an error speed; calculating a torque required in the motor based on the calculated error speed; calculating a drive voltage of the motor in the synchronous rectification type based on the calculated torque, the rotation speed of the motor, and an electrical specification of the motor; and setting a duty ratio of a PWM signal in the synchronous rectification type based on the calculated drive voltage.

A PWM signal generator section for generating a plurality of PWM signals with different phases to be respectively fed to a plurality of loads, and a phase difference setting section for setting phase differences among the PWM signals are provided. The phase difference setting section sets phase differences &#x394;t_shift(n,n+1) calculated based on an effective current Ia(n) flowing to each of the loads, where the number of the loads is N, according to the equations below: where n=1 to N (where N is an integer of two or more, and n+1=1 when n+1&#x3e;N), and t_pwm is a cycle of the PWM signals.

Drive control device

A drive control device includes: an embedded microcontroller including a program for outputting a drive control signal to a driving unit; a first timer circuit for outputting a cyclic signal to the embedded microcontroller, wherein the embedded microcontroller reads the cyclic signal outputted from the first timer circuit and transmits the cyclic signal to output a transmission signal as part of operation of the program; and a second timer circuit provided externally to the embedded microcontroller, wherein the transmission signal is inputted to the second timer circuit, the second timer circuit obtains temporal change of the transmission signal for a time set in advance, and the second timer circuit outputs, based on the obtained result, a signal indicating one of different operation states of the embedded microcontroller depending on whether or not there is continuous temporal change of the transmission signal.

A paper discharge device includes: an end fence to restrict leading end positions of paper sheets discharged to a paper receiving tray; a lift mechanism to lower the paper receiving tray by a prescribed distance upon reach of a top surface position of the paper sheets stacked on the paper receiving tray to a reference position; an ultrasonic sensor to emit an ultrasonic wave in a horizontal direction toward the paper receiving tray from upstream of the paper receiving tray in a discharge direction in a prescribed height range including the reference position and portions above and below the reference position, and receive a reflected wave from a detection target; and a detector to detect the top surface position on a basis of changes in a reception level of the reflected wave over an elapsed time from an emission of the ultrasonic wave.

Paper discharge device

As a transmitting horn or a receiving horn attached to a transmission element or a reception element of an ultrasonic sensor, a horn enclosure with two acoustic horn bodies having a dimensional difference &#x394;Lh of a quarter &#x3bb;/4 of the wavelength &#x3bb; of an ultrasonic wave U in the propagation direction X of the ultrasonic wave U or a reflection wave R is used. Then, the amplitude of a diffraction wave Aand the amplitude of a diffraction wave Ain opposite phase between a transmission side and a reception side are caused to match with each other so as to cancel out both the diffraction waves A, Ain a common sound space of the horn enclosure, which is not partitioned for each acoustic horn body by a screen, on a front of the reception element.

Ultrasonic sensor having trasmitting and receiving horns

Growing community of inventors

Tokyo, Japan

Masao Suzuki