Abstract: A motor includes a frame having an outer diameter of 10 millimeters or less and an inner surface. The motor also includes an annular magnet attached to the inner surface of the frame, a bracket provided at the frame, and a columnar brush formed of carbon and having an outer peripheral surface. In addition, the motor includes a commutator contacting the outer peripheral surface of the brush, and an elastic member supporting the brush at the bracket. A part of the elastic member is disposed inside of the columnar brush.

Abstract: A printing element includes a substrate, an intermediate layer, and a channel forming member layered in this order. The substrate has a common liquid chamber. The channel forming member has a second surface that is a surface facing the substrate via the intermediate layer, and a first surface that is an opposite surface to the second surface. The first surface is formed with a plurality of ejection ports that eject liquid from the common liquid chamber. The second surface is formed with a plurality of channels that allow each of the plurality of ejection ports and the common liquid chamber to communicate with each other, and a plurality of substantially parallel beam structures, the plurality of beam structures forming a slit portion therebetween.

Abstract: Bubble clogging at the time of attaching a liquid storage unit to an ink tank is suppressed. The ink tank comprises a joint pin that is inserted into a joint hole comprised by the liquid storage unit, a reservoir portion that internally reserves ink supplied via the joint hole and the joint pin, and a movable portion capable of moving inside the reservoir portion. As a protruding portion comprised by the liquid storage unit is inserted into a concave portion formed in the movable portion while being in contact therewith, the movable portion moves from a first position to a second position higher than the first position.

Abstract: A liquid filling method of filling a liquid storage device including a first tank that stores a liquid to be supplied to an ejection head ejecting the liquid and a second tank that stores the liquid to be supplied to the first tank through a connection port provided in the first tank with the liquid, the method including: injecting the liquid from a liquid storage container into the first tank through a first liquid introduction port provided in the first tank, in a state where a second liquid introduction port provided in the second tank is closed.

Abstract: A printing element is used, which includes a substrate, an intermediate layer, and a channel forming member layered in this order. The substrate has a common liquid chamber. The channel forming member has a second surface that is a surface facing the substrate via the intermediate layer, and a first surface that is an opposite surface to the second surface. The first surface is formed with a plurality of ejection ports that eject liquid from the common liquid chamber. The second surface is formed with a plurality of channels that make each of the plurality of ejection ports and the common liquid chamber communicate with each other, and a plurality of substantially parallel beam structures, the plurality of beam structures forming a slit portion therebetween.

Abstract: A motor includes a frame having an outer diameter of 10 millimeters or less and an inner surface. The motor also includes an annular magnet attached to the inner surface of the frame, a bracket provided at the frame, and a columnar brush formed of carbon and having an outer peripheral surface. In addition, the motor includes a commutator contacting the outer peripheral surface of the brush, and an elastic member supporting the brush at the bracket. A part of the elastic member is disposed inside of the columnar brush.

Abstract: A motor including: a frame having an outer diameter of 10 millimeters or less and an inner surface; an annular magnet attached to the inner surface of the frame; a bracket provided at the frame; a columnar brush formed of carbon and having an outer peripheral surface; a commutator contacting the outer peripheral surface of the brush; and an elastic member supporting the brush at the bracket, in which a part of the elastic member is inside the brush.

Abstract: A liquid filling method of filling a liquid storage device including a first tank that stores a liquid to be supplied to an ejection head ejecting the liquid and a second tank that stores the liquid to be supplied to the first tank through a connection port provided in the first tank with the liquid, the method including: injecting the liquid from a liquid storage container into the first tank through a first liquid introduction port provided in the first tank, in a state where a second liquid introduction port provided in the second tank is closed.

Abstract: Peripheral portion of filters includes short-side portions and long-side portions. A first component and a second component each include a first holding section and a second holding section, the long-side portion of the filter being compressively held between the first holding sections, and the short-side portion of the filter being compressively held between the second holding sections. At least one of the first component and the second component includes a wall portion configured to isolate the long-side portion and the resin from each other. The short-side portion and the resin are in contact with each other.

Abstract: A motor including: a frame having a width of 10 millimeters or less and an inner surface; an annular magnet attached to the inner surface of the frame; a bracket provided at the frame; a columnar brush formed of carbon and having an outer peripheral surface; a commutator contacting with the outer peripheral surface of the brush; and an elastic member supporting the brush to the bracket, in which at least a part of the elastic member is inside the brush.

Abstract: Peripheral portion of filters includes short-side portions and long-side portions. A first component and a second component each include a first holding section and a second holding section, the long-side portion of the filter being compressively held between the first holding sections, and the short-side portion of the filter being compressively held between the second holding sections. At least one of the first component and the second component includes a wall portion configured to isolate the long-side portion and the resin from each other. The short-side portion and the resin are in contact with each other.

Abstract: A printing element substrate is provided that can provide an accurate temperature detection of a printing element substrate and that can suppress the printing element substrate from having a larger size. In order to realize this, sensors are arranged along the heating resistor elements arranged in the printing element substrate so that more diode sensors are arranged at a higher density in a part having a higher temperature change of the printing element substrate during the liquid ejection operation from the ejection openings.

Abstract: A liquid discharge head includes a print element substrate provided with discharge ports, through which liquid is discharged; and a support member having a liquid chamber, which is provided with a communicating opening that communicates with the discharge ports, wherein the liquid chamber has a first surface provided with the communicating opening, and a second surface facing the first surface, the second surface is provided with a buffer chamber, which is a hollow space for storing gas, and the buffer chamber has, in the second surface, an opening having a projecting portion projecting toward the inner side of the opening.

Abstract: Provided is a liquid ejection head, including: an ejection unit including: a recording element substrate including a plurality of recording elements configured to generate energy; and a support member formed of a plate-like member and configured to support the recording element substrate, the support member including: a liquid chamber configured to store liquid therein, and an inlet formed in the liquid chamber so as to allow the liquid to flow into the liquid chamber; a flow path unit including a liquid path through which the liquid is supplied into the ejection unit from a liquid tank storing the liquid therein; a joint member sandwiched between the support member and the flow path unit and configured to seal the liquid; and a buffer chamber formed in a space defined by the joint member, the ejection unit, and the flow path unit and configured to retain gas therein.

Abstract: Provided is a liquid ejection head, including: an ejection unit including: a recording element substrate including a plurality of recording elements configured to generate energy; and a support member formed of a plate-like member and configured to support the recording element substrate, the support member including: a liquid chamber configured to store liquid therein, and an inlet formed in the liquid chamber so as to allow the liquid to flow into the liquid chamber; a flow path unit including a liquid path through which the liquid is supplied into the ejection unit from a liquid tank storing the liquid therein; a joint member sandwiched between the support member and the flow path unit and configured to seal the liquid; and a buffer chamber formed in a space defined by the joint member, the ejection unit, and the flow path unit and configured to retain gas therein.

Abstract: A liquid discharge head includes a print element substrate provided with discharge ports, through which liquid is discharged; and a support member having a liquid chamber, which is provided with a communicating opening that communicates with the discharge ports, wherein the liquid chamber has a first surface provided with the communicating opening, and a second surface facing the first surface, the second surface is provided with a buffer chamber, which is a hollow space for storing gas, and the buffer chamber has, in the second surface, an opening having a projecting portion projecting toward the inner side of the opening.

Abstract: Provided is a sealing material that exhibits excellent sealing property at a low contact pressure and a method for producing the same. A sealing material according to the present invention is a sealing material including a metal plate and a foamed rubber layer formed on one surface, or each of both surfaces, of the metal plate, in which the foamed rubber layer has a closed cell rate of 50% or more, and a surface of the foamed rubber layer has a maximum height determined by a method in conformity to JIS B 0601-2001 of 40 ?m or less.

Abstract: A printing element substrate is provided that can provide an accurate temperature detection of a printing element substrate and that can suppress the printing element substrate from having a larger size. In order to realize this, sensors are arranged along the heating resistor elements arranged in the printing element substrate so that more diode sensors are arranged at a higher density in a part having a higher temperature change of the printing element substrate during the liquid ejection operation from the ejection openings.

Abstract: The invention provides a liquid ejection head equipped with an energy generating element generating energy utilized for ejecting a liquid, a liquid supply port provided at a surface on which the energy generating element is provided for supplying the liquid to the energy generating element, a liquid flow path for supplying the liquid to the energy generating element from the liquid supply port and a rib extending from the liquid supply port toward an inlet of the liquid flow path, wherein an end portion of the rib on the side of the liquid flow path is provided at a position deviated from a center line of the liquid flow path.

Abstract: The invention provides a liquid ejection head equipped with an energy generating element generating energy utilized for ejecting a liquid, a liquid supply port provided at a surface on which the energy generating element is provided for supplying the liquid to the energy generating element, a liquid flow path for supplying the liquid to the energy generating element from the liquid supply port and a rib extending from the liquid supply port toward an inlet of the liquid flow path, wherein an end portion of the rib on the side of the liquid flow path is provided at a position deviated from a center line of the liquid flow path.