Abstract: A light emitting portion of an ink tank emits light after a delay time in accordance with a mounting speed of the ink tank has elapsed after connecting second electrode pads on an ink tank side and a second contact on a holder side.

Abstract: A liquid ejection head includes an element substrate and a support member. The element substrate includes an ejection orifice row, and a supply port. The support member includes a first flow path for supplying a liquid from a liquid supply source to the supply port. The first flow path includes a plurality of channels for supplying liquid to the supply port. At least one of the plurality of channels has a shape in which a cross section that intersects with a flow direction Y of the liquid increases from an upstream side to a downstream side with respect to the direction in which the liquid is supplied.

Abstract: The liquid ejecting head includes a printing element board having a plurality of printing elements for producing energy used to eject liquid, a contact board having a contact terminal for electrically connecting to a liquid ejection printing apparatus, and a functional element, and a plurality of lands which are provided on a face of the contact board where the functional element is mounted, and to which terminals of the functional element are connected. In addition, a wiring member connects the printing element board to the contact board, a first terminal is configured to be electrically connected to the printing element board, and a second terminal is configured to not be electrically connected to the printing element board, with both terminals disposed on one edge of the contact board.

Abstract: An optical modulator that includes a substrate 1 composed of a material having an electro-optical effect, an optical waveguide 2 formed in the substrate, and a modulation electrode 3 for modulating lightwaves propagating through the optical waveguide, in which output light L2 that is output from the optical waveguide is guided with an optical fiber, wavelength dispersion characteristics of the optical fiber transmission line are compensated for by performing polarization reversal 10 of the substrate along the optical waveguide with a predetermined pattern so that the substrate along the optical waveguide has waveform distortion with characteristics that are inverse to the wavelength dispersion characteristics of the optical fiber transmission line, and the compensation for the wavelength dispersion characteristics is adjusted to a predetermined level by disposing an adjustment member made of a dielectric material or a metal material in the vicinity of the modulation electrode.

Abstract: This invention suppresses the occurrence of ejection failures caused by air bubbles generated inside a liquid ejection head. A liquid ejection head includes an element substrate and a support member. The element substrate includes a ejection orifice row, and a supply port. The support member includes a first flow path for supplying a liquid from a liquid supply source to the supply port. The first flow path includes a plurality of channels. At least one of the plurality of channels has a shape in which a cross section that intersects with a flow direction Y of the liquid increases from an upstream side to a downstream side with respect to the direction in which the liquid is supplied.

Abstract: While an insert shaft (11) disposed with a wide angle lens (15) at a top end thereof is being inserted into a hole to inspect a wall surface of the hole on the basis of an image photographed through the wide angle lens (15), gas is injected into the innermost recess of the hole along the outer circumferential surface of the insert shaft (11) by a gas injection mechanism (19). The gas injection mechanism (19) is provided with a guide (13) configured to surround a top end portion of the insert shaft (11) and form a gas injection passage (R) extending in the longitudinal direction of the insert shaft (11) between the inner circumferential surface of the guide (13) and the outer circumferential surface of the insert shaft (11), and a gas supply unit (14c) configured to supply gas to an inner space of the guide (13).

Abstract: An optical control element capable of efficiently removing unnecessary higher mode light without complicating a manufacturing process of the optical control element is provided. The optical control element includes a substrate having an electro-optical effect, optical waveguides that are formed on the substrate, and a control electrode that controls light waves propagating through the optical waveguides, and the optical waveguides include an output waveguide portion which derives fundamental mode light, and a subsidiary waveguide portion which is connected to the output waveguide portion and derives higher mode light, and removal means is formed in contact with the subsidiary waveguide portion, for removing the higher mode light propagating through the subsidiary waveguide portion.

Abstract: A print head and an ink jet printing apparatus are provided which can have smaller sizes if a print head is used which includes a substrate with a plurality of ejection port arrays and a substrate with ejection port arrays longer than the plurality of ejection port arrays. A drive circuit formed in a substrate is formed outside ejection port arrays in the substrate along the extending direction of the ejection port arrays. The drive circuit formed on an overlapping side of the substrate where the ejection port arrays overlap is formed to be longer, along the extending direction of the ejection port arrays, than a drive circuit formed on a side of the substrate which is opposite to the overlapping side. Furthermore, the ejection port arrays of the substrates overlap in the extending direction of ink supply ports, and the substrates are mounted on a support.

Abstract: A surface inspection device includes an image generator for generating a digital image achieved by imaging an inner surface of a bore which is subjected to a boring work, a line extraction processor for extracting a line along a horizontal direction set to a line extraction direction from the digital image, for determining the state of the inner surface of the bore based on the line extracted by the line extraction processor. The line extraction processor extracts lines along the line detection direction from respective digital images before and after rotation which are achieved by rotating the digital image once or over plural times every predetermined angle while the line extraction direction is fixed, and the estimating unit determines the state of the inner surface of the bore based on the lines extracted from the respective digital images before and after the rotation.

Abstract: An optical waveguide device having a Mach-Zehnder type waveguide formed on a substrate is provided in which a slope of two waveguides input to an optical coupler on an output side of the Mach-Zehnder type waveguide is 0 degrees, a waveguide of the optical coupler after being coupled by the optical coupler is a multi-mode waveguide, and the waveguide which is output from the optical coupler is a three-branched waveguide including an output main waveguide and two output sub waveguides interposing the output main waveguide therebetween.

Abstract: An image processing method includes a step of extracting an inner circle and an outer circle from an annular image, a step of obtaining the center for the extracted inner circle and the extracted outer circle respectively, and a step of moving a processing center serving as a reference in the polar coordinate conversion gradually between the center of the inner circle and the center of the outer circle to convert the circular image into a panoramic development image. According thereto, when an annular image of a side wall surface of a hole imaged by an omnidirectional imaging device (10) is converted into a panoramic development image according to a polar coordinate conversion, a distortion resulted from a position deviation occurred between an optical axis (L1) of the omnidirectional imaging device (10) and a central axis (L2) of the hole (H) can be corrected.

Abstract: A liquid discharge head includes a liquid discharge substrate including a discharge port; a flow path for supplying liquid to the liquid discharge substrate; an absorption member capable of absorbing a laser beam, wherein a first flow path portion constituting a portion of a wall of the flow path is formed on a surface thereof; and a transparent member transparent to a laser beam, wherein a second flow path portion constituting another portion of the wall of the flow path is formed on a surface thereof; wherein the flow path is formed by welding the surfaces of the absorption and transparent members with each other at a periphery of the first flow path portion using a laser beam, and wherein the second flow path portion is constituted by a depression including an inclined surface capable of reflecting a laser beam directed toward the first flow path portion.

Abstract: An optical modulator includes: a substrate made of a material having an electro-optical effect; an optical waveguide formed on the substrate; and a modulation electrode for modulating an optical wave propagating through the optical waveguide, wherein emitted light emitted from the optical waveguide is guided by optical fiber, and polarization of the substrate is reversed in a predetermined pattern along the optical waveguide so as to provide waveform distortion having a characteristic opposite to a wavelength dispersion characteristic of the optical fiber.

Abstract: A method of manufacturing a liquid ejection head including a liquid ejection substrate, an electric wiring member, and a supporting member having a first supporting surface and a second supporting surface, including: positioning an outer peripheral portion of the electric wiring member disposed on the side of the second supporting surface outside of the second supporting surface; providing the supporting member with the first depression at a position facing one part of the outer peripheral portion of the electric wiring member and the second depression connected to the first depression at a position facing another part of the outer peripheral portion having a width smaller than that of the first depression, and applying an adhesive agent in the first depression to cause part of the adhesive agent to flow into the second depression, so that the outer peripheral portion of the electric wiring member is adhered to the supporting member.

Abstract: A flexible wiring substrate that is used in a liquid ejection head having an element substrate provided with energy generating elements for generating energy for ejecting liquid includes: a bending portion; a base member including resin; electrical wiring lines formed on the base member and electrically connected to the element substrate, the electrical wiring lines extending over a ridge of the bending portion; and a metal layer that is arranged on an area of the base member in which no electrical wiring lines are provided and that is not electrically connected to the element substrate, the metal layer extending over the ridge.

Abstract: An optical modulator that includes a substrate 1 composed of a material having an electro-optical effect, an optical waveguide 2 formed in the substrate, and a modulation electrode 3 for modulating light waves propagating through the optical waveguide, in which output light L2 that is output from the optical waveguide is guided with an optical fiber, wavelength dispersion characteristics of the optical fiber transition line are compensated for by performing polarization reversal 10 of the substrate along the optical waveguide with a predetermined pattern so that the substrate along the optical waveguide has waveform distortion with characteristics that are inverse to the wavelength dispersion characteristics of the optical fiber transition line, and the compensation for the wavelength dispersion characteristics is adjusted to a predetermined level by disposing an adjustment member made of a dielectric material or a metal material in the vicinity of the modulation electrode.

Abstract: A method for forming a ferroelectric spontaneous polarization reversal in a desired region of a ferroelectric substrate includes the steps of forming, for the desired region of the surface of the ferroelectric substrate, an electrode pattern or a mask pattern composed of aggregates of micropatterns, and then applying a given voltage into the desired region. The configuration of the micropatterns can be a stripe-shaped pattern, an ellipse-shaped pattern, a hexagon-shaped pattern, a network pattern, or a double cross shaped pattern. The method can further include the steps of generating many nucleuses by using the electrode pattern or the mask pattern composed of the aggregates of micropatterns, forming another electrode pattern or another mask pattern corresponding to the desired region, and then applying a given voltage into the desired region to generate a ferroelectric spontaneous polarization reversal around the nucleuses.

Abstract: A liquid ejection apparatus has an ejection orifice ejecting a liquid, a liquid storage section storing the liquid, a conductive communication path forming member forming a communication path to supply the liquid from the liquid storage section to the ejection orifice, and an electrode provided inside the liquid storage section and used to detect a remaining amount of the liquid. The communication path is electrically connected to the electrode, and the electrical resistance value between the electrode and the communication path contacting the liquid when the liquid is present in the liquid storage section is smaller than the electrical resistance value between the electrode and the communication path when the liquid is not present in the liquid storage section. A recording apparatus incorporating the above features can detect the presence or absence of ink in the recording head with high precision without increasing the size of the recording head.

Abstract: It is an object to provide an optical control device capable of realizing speed matching between a microwave and a light wave or impedance matching of microwaves and of reducing a driving voltage. An optical control device including a thin plate 1 (11) which has an electro-optical effect and has a thickness of 10 ?m or less, an optical waveguide 2 formed in the thin plate, and control electrodes for controlling light passing through the optical waveguide is characterized in that the control electrodes are configured to include a first electrode and a second electrode disposed to interpose the thin plate therebetween, the first electrode has a coplanar type electrode including at least a signal electrode 4 and a ground electrode 5, and the second electrode has at least a ground electrode 54 (55, 56) and is configured to apply an electric field to the optical waveguide in cooperation with the signal electrode of the first electrode.

Abstract: An assembly method of a liquid discharge head is provided. The liquid discharge head includes an element substrate, an electrode portion, a flexible wiring member which has the element substrate at one end and the electrode portion at another end, and includes a plurality of bent portions, wherein, each edge line of at least two bent portions are not parallel and a housing. The assembly method includes a step for providing the flexible wiring member and the housing in which the element substrate is fixed on a first surface of the housing, a step for fixing the flexible wiring member on a second surface of the housing while holding the electrode portion at a position on a third surface of the housing where the electrode portion to be fixed, and a step for fixing the electrode portion to the position.