Ricoh Company, Ltd.

Toyo Kohan Co., Ltd.

Kyb Corporation

Takahiro Yoshida

Takayuki Nakai

Shiomi Andou

Kanshi Abe

Tomohiko Kohda

Ryo Kasahara

Takeshi Shimizu

Yukio Otome

Nobuaki Mukai

Toshimichi Odaka

Takakazu Kihira

Junichi Iwata

Tomoyuki Tsuruda

Tomoaki Murakami

Hiroshi Gotou

Yoshiki Yanagawa

Ryuji Yoshida

Masato Iio

Hirotoshi Eguchi

Masahiko Ishikawa

Kunihiro Yamanaka

Yukinori Kameda

Satomi Araki

Masami Iwama

Hiroomi Yokomaku

Yuu Kimura

Katsuya Ishii

Takashi Kimura

Hiroaki Takahashi

Akihiko Matsuyama

Michihiko Namba

Yuta Nakamura

Tomohiro Inoue

Masanori Hirano

Masakazu Yoshida

Naoya Morohoshi

Juichi Furukawa

Tatsuya Tomura

Keita Katoh

Noriyasu Takeuchi

Hidefumi Nagashima

Kiyoshi Yamaguchi

Hisashi Habashi

Takuya Fujita

Toshihito Kamei

Takafumi Sasaki

Yoshihisa Ohta

Takuya Yamazaki

Kenichiroh Hashimoto

Hiroshi Sawase

Masahiro Kido

Hikaru Kobayashi

Koji Kawahara

Naoko Kitaoka

Kenichi Taguma

Ryohta Yoneta

Takashi Kinokuni

Masaaki Tsuda

Mitsuru Shingyohuchi

Isamu Suzuki

Atsushi Yanaka

Kenichi Ogata

Ryohta Matsufuji

Yukihiro Imanaga

Yoshimasa Miyazawa

Shigeaki Kimura

Hideyuki Makita

Yuki Nagai

Yoshimi Nemoto

Kunihiro Miura

Kenshiroh Munetomo

Gen Ishida

Naoko Mori

Yudai Yumoto

Youhei Yoshimatsu

Ryohei Nakamura

Kazumasa Shimata

Yoshida Takahiro

Kamei Toshihito

A liquid state detection sensor includes: an electrode part, the electrode part having a pair of electrodes provided so as to be opposed to each other; a voltage value acquisition time period setting unit configured to set a voltage value acquisition time period, the voltage value acquisition time period being a length of a time period during which an inter-electrode voltage value of the pair of electrodes of the electrode part is acquired; a voltage value acquisition unit configured to acquire the inter-electrode voltage value in the voltage value acquisition time period; and an electrical conductivity calculation unit configured to calculate an electrical conductivity of the liquid on the basis of, among the inter-electrode voltage value acquired by the voltage value acquisition unit, the inter-electrode voltage value acquired after a predetermined time period has elapsed since a start of the voltage value acquisition time period.

Liquid state detection sensor

A copper clad laminate of the present invention includes a low dielectric resin film having a relative permittivity of 3.5 or lower and a dissipation factor of 0.008 or lower at a frequency of 10 GHz, and an electroless copper plating layer laminated on at least one surface of the low dielectric resin film. A Ni content in the electroless copper plating layer is 0.01 to 1.2 wt %, and the electroless copper plating layer has a volume resistivity of 6.0 μΩ·cm or lower. The copper clad laminate is capable of achieving a good volume resistivity at an electroless copper plating layer of a low dielectric resin film while suppressing a transmission loss when being applied to a flexible circuit board.

Copper clad laminate and method for producing the same

A liquid discharge head includes: a nozzle plate having multiple nozzles from each of which a liquid is to be discharged; and a gap in each end of the nozzle plate in a longitudinal direction of the nozzle plate. The multiple nozzles are divided into P numbers of sub-nozzle groups, each of the sub-nozzle groups including the multiple nozzles as multiple sub-nozzles, where P is an integer of one or more, the multiple sub-nozzles are arrayed in the longitudinal direction at first intervals of d×P where d is a recording resolution and P is a number of the sub-nozzle groups, the sub-nozzle groups respectively include sub-nozzle rows respectively including the multiple sub-nozzles arrayed at the first intervals of d×P in the longitudinal direction.

Liquid discharge head, liquid discharge unit, and liquid discharge apparatus

A liquid discharge head includes: a nozzle plate having multiple nozzles on a plane of the nozzle plate in a first direction and a second direction orthogonal to the first direction; and a nozzle plate holder adjacent to the nozzle plate in the first direction and configured to hold the nozzle plate, wherein the multiple nozzles in the nozzle plate are arrayed in a third direction inclined with the first direction to form a nozzle array, multiple nozzle arrays, including the nozzle array, arrayed in the nozzle plate in a fourth direction inclined with respect to the second direction, and the nozzle plate has: a nozzle-plate short side inclined with respect to the second direction; and a nozzle-plate long side intersecting the nozzle-plate short side and along the fourth direction, and the nozzle-plate short side and the nozzle-plate long side form an acute angle θ

Liquid discharge head, liquid discharge device, and liquid discharge apparatus

A liquid discharge apparatus includes: a head including a pressure chamber and a nozzle, the head configured to discharge a liquid in the pressure chamber from the nozzle; circuitry configured to generate a drive waveform including multiple drive pulses to be applied to the head, the drive waveform successively including, in time series: a non-discharge pulse that does not cause the head to discharge the liquid from the nozzle; a latter discharge pulse after the non-discharge pulse, the latter discharge pulse including a contraction waveform element that contracts the pressure chamber to discharge the liquid from the nozzle; and a contraction waveform including the contraction waveform element that contracts the pressure chamber.

Liquid discharge apparatus, drive waveform generation device, and head drive method

A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.

Liquid discharging head, liquid discharging unit, and device for discharging liquid

A liquid discharge apparatus includes: a liquid discharge head configured to discharge a liquid from a nozzle; a drive waveform generator configured to generate a drive waveform including multiple drive pulses to be applied to the liquid discharge head, the multiple drive pulses successively including: a first drive pulse configured to cause the liquid discharge head to discharge the liquid; a second drive pulse configured to cause the liquid discharge head not to discharged the liquid while causing meniscus of the liquid in the nozzle in the liquid discharge head to vibrate; and a third drive pulse configured to cause the liquid discharge head to discharge the liquid; in time series.

Liquid discharge apparatus, drive waveform generator, and head driving method

A liquid discharge apparatus includes a liquid discharge head configured to discharge a liquid, and a drive waveform generator configured to generate a drive waveform to be applied to the liquid discharge head, the drive waveform including a first discharge pulse to cause the liquid discharge head to discharge the liquid, a second discharge pulse after the first discharge pulse, the second discharge pulse to cause the liquid discharge head to discharge the liquid, and a pulse interval between the first discharge pulse and the second discharge pulse, the pulse interval being equal to a time period in which the liquid is discharged by the second discharge pulse in a damping state in which the second discharge pulse is damped by a meniscus vibration generated by the first discharge pulse.

Liquid discharge apparatus, drive waveform generator, and head drive method

A liquid discharge head includes a head body configured to discharge a liquid, a head cover on the head body, a head cover covering at least a part of the head body, the head cover disposed outside the head body; a liquid supply port on an upper surface of the head cover, the liquid supply port configured to supply the liquid to the head body, an electrical connection on a side surface of the head cover. The head cover includes a protruding part protruding from the upper surface of the head cover, the protruding part is on a side end of the upper surface of the head cover adjacent to the side surface of the head cover on which the electrical connection is disposed, and the protruding part is higher than another part of the upper surface of the head cover with respect to a lower end surface of the head body.

A fluid-property detection device includes a housing attached to the external device, the housing being configured to hold the outer electrode and the inner electrode, an outer insulating member provided between the housing and the outer electrode, the outer insulating member being configured to insulate between the housing and the outer electrode, and an inner insulating member provided between the outer electrode and the inner electrode, the inner insulating member being configured to insulate between the outer electrode and the inner electrode, being configured to insulate between the housing and the inner electrode. The outer electrode and the inner electrode respectively have tip end portions, the tip end portions projecting out from the housing and being configured to expose to the detection target fluid contained in the external device.

Fluid-property detection device

A liquid discharge head includes a nozzle to discharge a liquid, an individual chamber communicating with the nozzle, a supply channel communicating with the individual chamber to supply the liquid to the individual chamber, and a discharge channel communicating with the individual chamber to discharge the liquid in the individual chamber. A fluid resistance of the supply channel is greater than a fluid resistance of the discharge channel.

Liquid discharge head including supply and discharge channels, liquid discharge device, and liquid discharge apparatus

A liquid discharge apparatus includes a liquid discharge head to discharge liquid and control circuitry to generate a drive waveform including drive pulses applied to the head. The drive waveform includes a non-discharge pulse not to discharge the liquid and a discharge pulse to discharge the liquid. The non-discharge pulse and the discharge pulse are serial in time in the drive waveform. Td is in a range of Tc&#x2212;0.2&#xd7;Tc to Tc+0.45&#xd7;Tc. Vpis in a range of &#x2212;10% to +10% of Vpp. Td represents a time interval between the non-discharge pulse and the discharge pulse. Tc represents a natural vibration period of a pressure chamber of the head. Vprepresents a peak value of the non-discharge pulse. Vpprepresents a peak value of the non-discharge pulse at which a droplet speed of liquid discharged by the discharge pulse takes a local minimum value.

Liquid discharge apparatus, drive waveform generating device, and head driving method

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Ibaraki, Japan

Takahiro Yoshida