Abstract: A radar level gauge using electromagnetic signals is provided, which includes a connection arrangement for connecting a transmitter receiver circuit board and an antenna unit with one another, with which the horizontal size of the radar level gauge may be reduced and reflection and transmission losses may be suppressed as well. The transmitter receiver circuit board 32 is so disposed in a housing 12 as to extend vertically. The connection arrangement includes a waveguide sequence which is fed at a feed terminal 32a formed on the transmitter receiver circuit board 32 and composed of three waveguides W1 to W3.

Abstract: A radar level gauge using electromagnetic signals is provided, which includes a connection arrangement for connecting a transmitter receiver circuit board and an antenna unit with one another, with which the horizontal size of the radar level gauge may be reduced and reflection and transmission losses may be suppressed as well. The transmitter receiver circuit board 32 is so disposed in a housing 12 as to extend vertically. The connection arrangement includes a waveguide sequence which is fed at a feed terminal 32a formed on the transmitter receiver circuit board 32 and composed of three waveguides W1 to W3.

Abstract: A liquid ejection head includes a nozzle plate, and a flow path member that is bonded to the nozzle plate, wherein the individual flow path includes a communicating portion that communicates with the nozzle openings and a pressure generating chamber that communicates with the communicating portion and has a width narrower than that of the communicating portion in the first direction, and wherein, in the flow path member, a first individual flow path row in which corresponding individual flow paths are arranged side by side in the first direction and a second individual flow path row where corresponding individual flow paths are arranged side by side in the first direction are arranged side by side in a second direction intersecting with the first direction, and each communicating portion of the second individual flow path row is provided between the pressure generating chambers of the first individual flow path row.

Abstract: A liquid ejecting head includes a main liquid ejecting head body, a head holder, and a sealing member, disposed between the main liquid ejecting head body and the head holder, that has a communication opening that communicates between a first liquid flow channel and a second liquid flow channel. The sealing member further has a close-contact portion provided at the circumferential edge of the communication opening; a first contact portion, provided in correspondence with the external circumferential portion of the main liquid ejecting head body, that protrudes toward the main liquid ejecting head body and makes contact with the main liquid ejecting head body; and a second contact portion that protrudes toward the head holder and makes contact with the head holder.

Abstract: A liquid ejection head includes a nozzle plate, and a flow path member that is bonded to the nozzle plate, wherein the individual flow path includes a communicating portion that communicates with the nozzle openings and a pressure generating chamber that communicates with the communicating portion and has a width narrower than that of the communicating portion in the first direction, and wherein, in the flow path member, a first individual flow path row in which corresponding individual flow paths are arranged side by side in the first direction and a second individual flow path row where corresponding individual flow paths are arranged side by side in the first direction are arranged side by side in a second direction intersecting with the first direction, and each communicating portion of the second individual flow path row is provided between the pressure generating chambers of the first individual flow path row.

Abstract: A liquid ejecting head includes a main liquid ejecting head body, a head holder, and a sealing member, disposed between the main liquid ejecting head body and the head holder, that has a communication opening that communicates between a first liquid flow channel and a second liquid flow channel. The sealing member further has a close-contact portion provided at the circumferential edge of the communication opening; a first contact portion, provided in correspondence with the external circumferential portion of the main liquid ejecting head body, that protrudes toward the main liquid ejecting head body and makes contact with the main liquid ejecting head body; and a second contact portion that protrudes toward the head holder and makes contact with the head holder.