Semiconductor Energy Laboratory Co., Ltd.

Ricoh Company, Ltd.

Keisuke Hayashi

Shunpei Yamazaki

Jun Koyama

Yukio Tanaka

Yu Yamazaki

Toshiaki Masuda

Keishi Miwa

Takashi Kinokuni

Tatsuya Shimoda

Yoshiharu Hirakata

Hiroshi Mori

Shinji Tamaki

Juichi Furukawa

Takeshi Sano

Takeshi Yamakawa

Masato Yanagida

Hisashi Habashi

Takahiko Kuroda

Fumio Kishi

Seiji Oka

Daisuke Takagi

Tomohito Shimizu

Tomohiko Koda

Kouji Ishigaki

Kazuyuki Nakahara

Akio Kutsuwada

Masataka Yoshiike

Shinichi Kakuda

Susumu Shiina

Kenichiro Hashimoto

Yoshinobu Kagami

Tatsuya Sameshima

Tomoyuki Aratani

Tetsuo Yamaoka

A liquid discharge head includes a flow path substrate including an individual liquid chamber communicating with a nozzle of discharging liquid; and a holding substrate joined to the flow path substrate by an adhesive bond and has an opening communicating with the individual liquid chamber, wherein the opening of the holding substrate has a wall surface crossing relative to a joining surface between the flow path substrate and the holding substrate, wherein an uneven portion is provided on the wall surface of the opening of the holding substrate, and wherein a part of the adhesive bond adheres to the uneven portion on the wall surface.

Liquid discharge head, liquid discharge unit, and device of discharging liquid

A liquid discharge head includes an actuator substrate and a holding substrate. The actuator substrate includes a plurality of individual liquid chambers and a plurality of pressure generating elements. The plurality of individual liquid chambers is communicated with a plurality of nozzles to discharge liquid. The plurality of pressure generating elements is arrayed to pressurize liquid in the plurality of individual liquid chambers. The holding substrate includes a plurality of recessed portions to accommodate the plurality of pressure generating elements. The holding substrate is bonded to the actuator substrate with an adhesive. The holding substrate has a plurality of openings as a plurality of channels communicating the plurality of individual liquid chambers with a common liquid chamber to supply liquid to the plurality of individual liquid chambers. At least one corner of each of the plurality of openings at least partially has a curved surface.

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

A liquid ejection head includes channel forming members and a surface treatment film. The channel forming members are joined to each other via an adhesive agent to form a channel for liquid. The surface treatment film is formed on a surface of at least one of the channel forming members. The surface treatment film is an oxidized film including Si. The oxidized film further includes a transition metal forming a passive film.

Liquid ejection head and image forming apparatus incorporating same

A piezoelectric element includes a vibration plate; a lower electrode; a piezoelectric film; and an upper electrode, which are laminated in the stated order. An electric field is applied to the piezoelectric film by the lower electrode and the upper electrode. A shape of the piezoelectric film near a boundary face between the piezoelectric film and the upper electrode as viewed from a lamination direction of the piezoelectric film and the upper electrode, is substantially the same as a shape of the upper electrode. A width of the piezoelectric film precipitously extends from an end of the boundary face. A thickness of the piezoelectric film in an area in the width of the piezoelectric film where the upper electrode is not formed, is formed to be proportionate to the precipitous extension of the width of the piezoelectric film.

Piezoelectric element, liquid droplet discharging head, liquid droplet discharging device, image forming apparatus, and manufacturing method of piezoelectric element

A method of producing an electromechanical transducer element includes forming a first, common electrode on one of a substrate and an undercoat layer; forming an electromechanical transducer film on the first electrode; forming a second electrode on the electromechanical transducer film; forming a first protective film on an upper surface of the second electrode, the electromechanical transducer film, and a side wall of the second electrode, and selectively forming a second protective film on a portion of the first protective film protecting the electromechanical transducer film and the side wall of the second electrode.

Method of producing electromechanical transducer element, electromechanical transducer element, liquid droplet discharge head, and image forming apparatus

A liquid droplet discharge head includes a nozzle substrate; nozzles, disposed on the nozzle substrate, to discharge a liquid; a pressurized liquid chamber that communicates with the nozzles; a diaphragm forming one wall of the pressurized liquid chamber; an electromechanical transducer element for discharging, disposed on an element mount surface of the diaphragm opposite a side facing the pressurized liquid chamber; and a retainer substrate laminated to the element mount surface of the diaphragm with an adhesive. The subject head is configured to discharge a liquid inside the pressurized liquid chamber from the nozzles while the diaphragm is displaced by a drive voltage applied to the electromechanical transducer element for discharging, and the liquid droplet discharge head further comprising an electromechanical transducer element for inspection that does not perform discharging, disposed on the element mount surface of the diaphragm, to which a voltage is applied so that the diaphragm displaces.

Liquid droplet discharge head, image forming apparatus including same, and method of inspecting liquid droplet discharge head

To provide a goggle type display device system that can prevent harm to user's health. If anomaly is recognized in mind and body of a user, first video signals provided from an external device stop being displayed on LCD panels and, instead, outside scenery taken by CCD image capture elements is displayed. The user may be alarmed by this about anomaly of his or her body and, further, relaxed by looking at the outside scenery presented.

Goggle type display system

Display system

A liquid discharge head includes nozzles that discharge liquid droplets, individual channels in communication with the nozzles, a liquid introducing part in communication with the individual channels, a common liquid chamber that supplies liquid to the individual channels, and a filter part arranged between the common liquid chamber and the liquid introducing part. The filter part has filter holes for filtering the liquid over a range of the individual channels in a nozzle array direction. The filter part has at least one reinforcement rib arranged in the nozzle array direction. The reinforcement rib is partially arranged over the range of the individual channels in a direction perpendicular to the nozzle array direction. Filter regions divided by the reinforcement rib are arranged to be in communication via a communication region where the reinforcement rib is not arranged, and the filter holes are arranged at the communication region.

Liquid discharge head and image forming apparatus

A liquid-jet head includes a thin film member having a thin part and a thick part, and at least a part of the thin film member is formed of an electroformed film. In the liquid-jet head, the thin film member includes a metallic film forming the thin part, a first electroformed film formed on the metallic film, the first electroformed film forming the thick part, and a second electroformed film covering a connecting part between the metallic film and the first electroformed film.

Image forming apparatus, liquid-jet head, and method for manufacturing the liquid-jet head

A liquid droplet ejection head includes plural nozzles; plural individual liquid chambers; a common liquid chamber supplying liquid to the plural individual liquid chambers; a filter sheet member including plural pores formed therein to filter the liquid; and a frame body including an opening part and being in connection with the filter sheet member with adhesive. Further, a size of a region where the plural pores are formed is greater than the opening part of the frame body; an adhesive accumulation area is formed on an inner peripheral end of the opening part; and a size of the adhesive accumulation area in a protruding direction of the adhesive is greater than a size of an area between adjacent pores in the filter sheet member.

Liquid droplet ejection head, image forming apparatus, and manufacturing method of liquid droplet ejection head

A liquid discharge head includes a piezoelectric actuator. The piezoelectric actuator includes a piezoelectric member on which plural piezoelectric poles are formed, and the plural piezoelectric poles are formed to be inclined in a direction in which the plural piezoelectric poles are arranged.

Liquid discharge head, method of manufacturing liquid discharge head, and image forming device

A liquid-jet head includes nozzles ejecting liquid drops, individual liquid chambers in communication with the corresponding nozzles, a common liquid chamber supplying the liquid to the individual liquid chambers, and a filter member filtering the liquid inside the common liquid chamber. The filter member includes a thin layer having pores and a thick layer on a circumferential part of the thin layer, the thick layer being bonded to the first common liquid chamber member; the thin layer includes a first surface having the thick layer and a second surface opposite to the first surface, a circumferential part of the second surface being bonded to the second common liquid chamber member with an adhesive; and part of or all the pores in the circumferential part of the second surface are exposed in a direction toward the thick layer, and the adhesive overflows into the pores.

Liquid-jet head and image forming apparatus

There is provided a driving circuit which is simple and has a small occupied area. A shift register circuit of the present invention includes a plurality of register circuits. Each of the register circuits includes a clocked inverter circuit and an inverter circuit. Both are connected in series with each other so that an output signal of the clocked inverter circuit becomes an input signal of the inverter circuit. Further, the register circuit includes a signal line by which an output signal of the inverter circuit is transmitted. Since a number of elements are connected to the signal line and parasitic capacitance is large, it has a high load. The shift register circuit of the present invention uses the fact that since the parasitic capacitance of the signal line is large, it has a high load.

Shift register circuit, driving circuit of display device, and display device using the driving circuit

In a liquid drop ejecting head including a diaphragm, a channel member, and a nozzle plate which are laminated in this order, interface surfaces of the channel member and the diaphragm are bonded by an adhesive. The diaphragm is formed to have a laminated structure in which the number of lamination layers is varied at different locations. The diaphragm includes an opening and a filter part, the filter part having plural filtering holes formed in the opening for supplying a liquid to pressurizing liquid chambers of the channel member. A side wall of the channel member disposed to contact or located in a vicinity of the filter part, and a thick-walled portion containing the largest number of lamination layers in the diaphragm do not overlap with each other in a laminating direction.

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Kanagawa, Japan

Keisuke Hayashi