摘要:
A filter element includes resonators that are arranged in series arms and parallel arms in a circuit. In this filter element, at least one of the series-arm resonators includes a plurality of single-terminal pair piezoelectric thin-film resonators connected in parallel.
摘要:
A filter chip includes multiple series-arm resonators arranged in series arms of a ladder arrangement, and multiple parallel-arm resonators arranged in parallel arms of the ladder arrangement. A common line is connected to first electrodes of at least two parallel-arm resonators among the multiple parallel-arm resonators. Second electrodes of said at least two parallel-arm resonators are connected to associated series-arm resonators among the multiple series-arm resonators.
摘要:
A film bulk acoustic resonator includes: a piezoelectric thin film that is formed on a principal surface of a substrate; and a lower electrode and an upper electrode that are arranged to sandwich the piezoelectric thin film. In this film bulk acoustic resonator, the piezoelectric thin film is made of aluminum nitride, and at least one of the lower electrode and the upper electrode contains a ruthenium or ruthenium-alloy layer.
摘要:
A film bulk acoustic resonator includes: a piezoelectric thin film that is formed on a principal surface of a substrate; and a lower electrode and an upper electrode that are arranged to sandwich the piezoelectric thin film. In this film bulk acoustic resonator, the piezoelectric thin film is made of aluminum nitride, and at least one of the lower electrode and the upper electrode contains a ruthenium or ruthenium-alloy layer.
摘要:
A belt device includes a belt that is rotatable and a driving rotator to drive and rotate the belt and to be accidentally adhered with a foreign substance. The driving rotator includes a coating layer as a surface layer. The coating layer includes a plurality of fine particles.
摘要:
A powder transport device includes a first transport tube through which powder falls under gravity; a second transport tube having a transport member that transports the powder in a substantially horizontal direction; and a joint section having a ceiling, opposed side walls, an upstream wall, and a downstream wall. The joint section defines a first drop region, defined by the downstream wall and the side walls, continuous with and positioned directly under the first transport tube, to drop the powder dropped from the first transport tube; and a second drop region, defined by the ceiling, the upstream wall, and the side walls, displaced relative to and continuous with the first drop region, positioned adjacent to the second transport tube, to drop the powder transported from the second transport tube upstream from the first drop region in the direction in which the powder is transported through the second transport tube.
摘要:
A belt device includes: a belt that passes through a plurality of image forming units, each of the image forming units including a transfer member and an image carrier as a pair, the transfer member moves in a direction to contact with the belt and in a direction so as to be separated from the belt; a cleaning unit cleans an outer periphery of the belt after the belt passes through all the image forming units; and a pressing member is disposed between the cleaning unit and the image forming unit located on the most upstream side and that presses the outer periphery of the belt, wherein when the transfer member of at least one of the image forming units moves to be separated from the belt, the transfer member of the rest of the image forming units and the pressing member support the belt.
摘要:
A transfer device transfers an image formed on each of image-carrier rotating members onto a transfer belt by applying a bias voltage to the image-carrier rotating members. A rotation axis of one of image-carrier rotating member located the most upstream is positioned closer to the transfer belt than those of the other image-carrier rotating members. Each of the bias-applying rotating members is displaced downstream of the corresponding image-carrier rotating member, and a line on which a rotation axis of the bias-applying rotating member and that of the corresponding image-carrier rotating member fall is orthogonal to a moving direction of the transfer belt.
摘要:
Rollers including a tension roller are arranged in parallel. A pair of supporting members supports both ends of the rollers. A transfer belt is supported by the rollers. A biasing member applies a tension to the transfer belt by biasing the tension roller in a predetermined direction. The tension roller is movably supported in a straight-line direction. The biasing member is arranged in an area surrounded by the supporting members and the transfer belt in a direction of traversing from one supporting member to other supporting member.
摘要:
A powder housing unit includes a plate-shaped agitating unit that is horizontally arranged inside of a casing to accommodate a powder, a rotating shaft that causes the agitating unit to slide back and forth, and a powder conveying unit that conveys the powder in a horizontal direction during the sliding. The rotating shaft is supported by a shaft supporting unit in a rotatable manner such that a space is formed between the rotating shaft and the shaft supporting unit.