Seiko Epson Corporation

Hiroto Tomioka

Tadashi Aizawa

Tetsuo Nishida

Satoshi Takenaka

According to an aspect of the present disclosure, there is provided a drying device disposed at a predetermined interval from a recording medium and including a heater configured to dry liquid applied to the recording medium with a high frequency wave. The heater includes a first electrode coupled to a power supply that outputs the high frequency wave and a second electrode coupled to the power supply that outputs the high frequency wave and disposed to be separated from the first electrode at a predetermined interval. The distance between the end of the first electrode and the recording medium is longer compared with the distance between the center of the first electrode and the recording medium.

Drying device and recording device

A printing apparatusincludes a pretreatment unitthat applies a processing liquid containing a polar material to a fabric M, a printing unitthat applies ink containing a color material to the fabric M applied with the processing liquid, and an AC electric field generatorthat generates an AC electric field. The AC electric field generatorincludes a first electrodesand a second electrodethat face the fabric M and that are disposed adjacent to each other, a high-frequency voltage generatorthat generates a high-frequency voltage to be applied to the first electrodesand the second electrode, and a conductorsthat electrically connects the first electrodesand the second electrodeto the high-frequency voltage generator

Printing apparatus and printing method

A robot has an optical signal transmitter that transmits an optical signal, the optical signal transmitter includes a light source, a supporting board that supports the light source, and a light guide part that transmits light emitted from the light source, and the supporting board includes a board main body, a penetration portion connected to the light source, penetrating in a thickness direction of the board main body, and formed using a metal material, and a heat dissipation portion connected to the penetration portion and formed using a metal material, wherein the penetration portion is placed between the light source and the heat dissipation portion, and the light source is placed between the light guide part and the supporting board.

Optical signal transmitter having a penetrating metal connector between a light source and a heat dissipater

An encoder includes an optical scale that is so provided as to be pivotable around a pivotal axis and includes a polarizing portion having a polarization characteristic, a light outputting portion that outputs linearly polarized light toward the polarizing portion, and a light detecting portion that detects the linearly polarized light from the optical scale. The light outputting portion includes a vertical cavity surface emitting laser, and light emitted from the vertical cavity surface emitting laser spreads at an angle greater than or equal to 5&#xb0; but smaller than or equal to 20&#xb0;.

Encoder and robot having an optical scale with a polarizing portion

A terahertz wave detecting device includes: a substrate; a first metal layer that is disposed above the substrate; a pyroelectric layer that is disposed on the first metal layer; and a second metal layer that is disposed on the pyroelectric layer, wherein the second metal layer has a periodic structure in which a unit structure is disposed in a predetermined period, and the pyroelectric layer absorbs terahertz waves being incident on the pyroelectric layer and converts the terahertz waves into heat and converts the converted heat into an electrical signal.

Terahertz wave detecting device, camera, imaging apparatus, and measuring apparatus

A terahertz wave detection device which includes an absorption portion which absorbs a terahertz wave and generates heat and a conversion portion which converts the heat generated by the absorption portion into an electric signal, wherein the absorption portion includes a dielectric layer, a plurality of metal structures which are provided on one surface of the dielectric layer and are arranged to be separated from one another by an interval having a predetermined length; and a metal layer which is provided on the other surface of the dielectric layer, and wherein the interval is shorter than a wavelength of the terahertz wave which is absorbed by the absorption portion.

Terahertz wave detection device, camera, imaging device, and measuring device

A photoconductive antenna is adapted to generate terahertz waves when irradiated by pulsed light. The photoconductive antenna includes first and second conductive layers, a semiconductor layer positioned between the first and second conductive layers, first and second electrodes, and a dielectric layer. The semiconductor layer is made of a semiconductor material having a carrier density that is lower than a carrier density of the semiconductor material of the first conductive layer or the second conducive layer. The first and second electrodes are electrically connected to the first and second conductive layers, respectively. The second electrode has an aperture through which the pulsed light passes. The dielectric layer is made of a dielectric material, and is in contact with a surface of the semiconductor layer having a normal direction extending orthogonal to a lamination direction of the first conductive layer, the semiconductor layer, and the second conductive layer.

Photoconductive antenna, terahertz wave generating device, camera, imaging device, and measuring device

A terahertz wave detecting device includes: a substrate; and a plurality of detection elements that is arranged above the substrate, wherein the detection element includes an absorbing section that absorbs a terahertz wave to generate heat, and a converting section that converts the heat generated in the absorbing section into an electric signal, wherein the absorbing section includes a dielectric layer, a first metal layer that is provided on a surface of the dielectric layer, and a second metal layer that is provided on the other surface of the dielectric layer, and wherein the plurality of detection elements is arranged so that the terahertz wave that is diffracted between the adjacent absorbing sections is incident onto the dielectric layer.

Terahertz wave detecting device, camera, imaging apparatus and measuring apparatus

A specimen inspection apparatus includes: a terahertz wave generation unit which generates a terahertz wave; a transportation unit which includes a transportation surface on which specimens as inspection objects are loaded and is configured so as to transport the specimens in an in-plane direction of the transportation surface; an irradiation direction changing unit which changes an irradiation direction of a terahertz wave which is emitted from the terahertz wave generation unit and is emitted to the specimens loaded on the transportation surface; and a terahertz wave detection unit which detects a terahertz wave which is emitted to the specimens loaded on the transportation surface to transmit therethrough or be reflected thereby, wherein the irradiation direction changing unit changes the irradiation direction by changing a position of the terahertz wave generation unit.

Specimen inspection apparatus

A terahertz wave detection device includes a wavelength filter transmitting terahertz waves having a predetermined wavelength, and a detection portion detecting the terahertz waves having the predetermined wavelength that have passed through the wavelength filter by converting the terahertz waves into heat, wherein the wavelength filter includes a metal layer having a plurality of holes communicating with an incident surface onto which the terahertz waves are incident and an emission surface from which the terahertz waves having the predetermined wavelength are emitted, and a dielectric portion filling in the plurality of holes and made of a dielectric, wherein the plurality of holes are formed with a predetermined pitch along a direction that is perpendicular to a normal line of the incident surface.

Terahertz wave detection device, terahertz wavelength filter, imaging device, and measurement device

A photoconductive antenna is adapted to generate terahertz waves when irradiated by pulsed light. The photoconductive antenna includes first and second conductive layers, a semiconductor layer, and first and second electrodes. The semiconductor layer is made of a semiconductor material having a carrier density that is lower than a carrier density of the semiconductor material of the first conductive layer or the second conductive layer. The first and second electrodes are electrically connected to the first and second conductive layers, respectively. The semiconductor layer includes an incidence surface through which the pulsed light enters the semiconductor layer, and an emission surface from which the terahertz waves are emitted. The incidence surface is positioned in a side surface of the semiconductor layer having a normal direction extending orthogonal to a lamination direction, and the emission surface is positioned in the side surface at a position different from the incidence surface.

A terahertz wave generating device includes a first light source, a second light source and an antenna. The first light source and a second light source are configured and arranged to generate pulsed lights. The antenna is configured and arranged to generate terahertz waves when irradiated by the pulsed lights generated by the first light source and the second light source. The antenna has a pair of electrodes arranged opposite each other with a gap being formed therebetween. The first light source and the second light source are configured and arranged to irradiate the pulsed lights between the electrodes at timings that are offset from each other.

Terahertz wave generating device, camera, imaging device, and measurement device

A terahertz wave detecting device includes a wavelength filter and a detection part. The wavelength filter is configured to convert terahertz waves to heat. The detection part is configured to detect the heat converted by the wavelength filter. The wavelength filter includes a wavelength selection layer and a terahertz wave absorption layer. The wavelength selection layer is configured to transmit terahertz waves of a prescribed wavelength among the terahertz waves. The terahertz wave absorption layer is provided in contact with the wavelength selection layer and the detection part, and contains a material for absorbing the terahertz waves of the prescribed wavelength.

Terahertz wave detecting device, imaging device, and measuring device

A terahertz wave generating device includes a plurality of light sources and an antenna. The light sources are configured to generate pulsed light. The antenna is configured to generate terahertz waves by being irradiated with the pulsed light generated by the light sources. The antenna has a plurality of pairs of electrodes with the electrodes in each of the pairs facing each other across a gap portion with a predetermined distance. The light sources is configured to irradiate the gap portions between the electrodes in the pairs with the pulsed light such that the gap portions between the electrodes of at least two of the pairs are irradiated with the pulsed light at mutually different timings.

Growing community of inventors

Chino, Japan

Hiroto Tomioka