Seiko Epson Corporation

Hirokazu Yanagihara

Hiroaki Okui

Eiichiro Watanabe

Akio Fukase

Shunji Tomioka

A drive unit is configured to generate a drive signal for driving a liquid ejecting head unit. The drive unit includes a drive board on which a drive circuit configured to generate the drive signal is mounted; a thermal conductive material that is in contact with the drive circuit on an opposite side in relation to the drive board; a water cooling mechanism that is in contact with the thermal conductive material on an opposite side in relation to the drive circuit; a pump that causes liquid in the water cooling mechanism to flow; and a control circuit that controls operation of the pump. The control circuit switches a direction in which the pump causes the liquid to flow between a forward direction and a reverse direction that is an opposite of the forward direction.

Drive unit, liquid ejecting head unit, and liquid ejecting apparatus

Provided is a drive circuit unit that is coupled to a head connector located opposite to a discharge port of a head, the drive circuit unit including: a first substrate having a first connector coupled to the head connector; a third substrate on which a drive circuit generating a drive signal is mounted; and a fan that generates wind, in which the drive signal is supplied from the third substrate to the first connector via the first substrate, the third substrate is B-to-B-coupled to the first substrate and stands upright with respect to the first substrate, the fan stands upright with respect to the first substrate, and a rotation axis of the fan is substantially parallel to a surface of the third substrate.

Drive circuit unit, head unit, and liquid discharge apparatus

A liquid ejecting apparatus includes: a first head disposed such that an arrangement angle is a first angle; a second head disposed such that an arrangement angle is a second angle, which is greater than the first angle; a first circulation mechanism circulating liquid between a first reservoir and the first head; a second circulation mechanism circulating liquid between a second reservoir and the second head; and a control unit controlling the first and the second circulation mechanisms. The control unit performs circulation cleaning, in which the liquid is circulated, on multiple heads including the first head and the second head. The amount of the liquid circulating through the first head during the circulation cleaning is a first amount, and the amount of the liquid circulating through the second head during the circulation cleaning is a second amount that is greater than the first amount.

Liquid ejecting apparatus

A liquid ejecting apparatus includes a head that includes an ejecting portion that, upon receiving a drive signal, ejects liquid; a controller that performs control on circulation of liquid through the first flow passage, wherein the controller performs first control of circulating liquid through the first thermal conductive member and the second thermal conductive member in this order in the first flow passage when an amount of heat generated at the first portion is larger than an amount of heat generated at the second portion, and performs second control of circulating liquid through the second thermal conductive member and the first thermal conductive member in this order in the first flow passage when an amount of heat generated at the second portion is larger than an amount of heat generated at the first portion.

Liquid ejecting apparatus and cooling unit

A first drive unit configured to generate a first drive signal for driving a first liquid ejecting head unit, the first drive unit comprising: a first drive circuit that generates the first drive signal; a first thermal conductive material that is in contact with the first drive circuit; and a first water cooling mechanism that is in contact with the first thermal conductive material on an opposite side in relation to the first drive circuit and causes liquid to flow, wherein the first water cooling mechanism causes liquid sent from a second water cooling mechanism to flow, and discharges liquid to a third water cooling mechanism, the second water cooling mechanism is provided in a second drive unit configured to generate a second drive signal for driving a second liquid ejecting head unit located next to the first liquid ejecting head unit, and the third water cooling mechanism is provided in a third drive unit configured to generate a third drive signal for driving a third liquid ejecting head unit located next to the first liquid ejecting head unit on an opposite side in relation to the second liquid ejecting head unit.

First drive unit, first liquid ejecting head unit, and liquid ejecting apparatus

A projector includes a first detection section which has a first sensor provided to an enclosure, and has a first detection axis as a central axis of a first detection range as a detection range of the first sensor, and a second detection section which has a second sensor provided to the enclosure, and has a second detection axis as a central axis of a second detection range as a detection range of the second sensor, and a distance of the first detection range from the first sensor in the first detection axis of the first detection section is longer than a distance of the second detection range from the second sensor in the second detection axis of the second detection section.

Projector

A projector includes an optical unit having a light modulator and a projection lens, a control section, an exterior enclosure that accommodates the optical unit and the control section, a partitioning section that partitions the interior of the exterior enclosure into a first region where the optical unit is disposed and a second region where the control section is disposed, an intake fan and another intake fan that takes air outside the exterior enclosure into the interior thereof and causes the taken-in air to flow through the first region and the second region, respectively, an aggregation substrate disposed in the first region and having a wiring line that originates from at least a light modulator that are controlled by the control section and is electrically connected to the control section, and a wiring section that electrically connects the control section and the aggregation substrate to each other.

An organic EL element includes a functional layer disposed between an anode and a cathode on a substrate and including laminated different organic thin films including a light-emitting layer, and a partition wall which defines the functional layer. Each of the organic thin films is formed by applying a liquid containing a functional layer-forming material on a film-forming region defined by the partition wall and then drying the liquid. The partition wall has at least one step portion provided in the side wall thereof in the thickness direction, and liquid repellency is imparted to the uppermost surface of the partition wall and the upper surface of the step portion. The surface of the side wall excluding the step portion has lyophilicity in comparison with the upper surface of the step portion.

Organic EL element having a partition with a step, method for manufacturing organic EL element, organic EL device, and electronic apparatus

An electrooptical device having a plurality of light-emitting regions includes a substrate, a bank disposed in a region other than the light-emitting regions on the substrate so as to surround the light-emitting regions, and a functional layer disposed in openings surrounded by the bank. The bank includes an upper bank segment and a plurality of lower bank segments having a higher wettability than the upper bank segment. The number of the lower bank segments exposed is smaller in second regions of the openings than in first regions of the openings.

Electrooptical device, electronic apparatus, and method for producing electrooptical device

A light emitting device includes a substrate, a plurality of pixel electrodes arranged in a matrix on the substrate, and a counter electrode disposed opposite the plurality of pixel electrodes. Here, the plurality of pixel electrodes includes a first pixel electrode group including two or more of the plurality of pixel electrodes arranged continuously in a first direction and the first pixel electrode group includes a first pixel electrode and a second pixel electrode arranged to be adjacent to each other and a third pixel electrode and a fourth pixel electrode arranged to be adjacent to each other. A first division portion is disposed between the first pixel electrode and the second pixel electrode and a second division portion is disposed between the third pixel electrode and the fourth pixel electrode. At least one light-emitting function layer including a plurality of layers including a light-emitting layer is formed between two or more pixel electrodes located between the first division portion and the second division portion in the first pixel electrode group and the counter electrode to cover the two or more pixel electrodes located between the first division portion and the second division portion.

Light emitting device and electronic apparatus

A method for producing an organic semiconductor device including a plurality of organic semiconductor layers laminated on a substrate includes forming a film of a liquid composition on a target surface, the liquid composition being composed of a material constituting one of the plurality of the organic semiconductor layers, the material being dissolved or dispersed in a first solvent, and the target surface including a substrate surface and a surface of any of the other of the plurality of organic semiconductor layers; altering a portion of the film adjacent to the target surface, the portion having a predetermined thickness, in such a manner that the portion is not dissolved in a predetermined solvent containing the first solvent; and removing an unaltered portion of the film in the step of altering the portion with the predetermined solvent.

Organic semiconductor device, method for producing organic semiconductor device, organic electroluminescent device, and method for producing organic electroluminescent device

An image forming apparatus includes a photosensitive drum having a predetermined rotary shaft, an exposure device conducting exposure on the photosensitive drum so as to form an electrostatic latent image on a surface of the photosensitive drum, a medium supplier that supplies the surface of the photosensitive drum with a liquid material so as to form a layer composed of the liquid material between the exposure device and the photosensitive drum, and a developing device that develops the electrostatic latent image formed on the surface of the photosensitive drum by using a liquid developer containing toner particles.

Growing community of inventors

Chino, Japan

Hirokazu Yanagihara