Kabushiki Kaisha Sankyo Seiki Seisakusho

Nippon Steel Corporation

Yuki Nakamura

Fumito Komatsu

Noboru Ueno

Kenji Muramatsu

Toshihiro Kobayashi

Akinori Ushikoshi

Takafumi Kuwazawa

Toshitatsu Kawatsu

Kingo Chino

Tomohiro Takeuchi

Toshiro Shimodaira

A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member which has cylinder chambers and formed thereto so as to pass through a rotary shaft center O and rotates around the rotary shaft center O; pistons and demonstrating reciprocating linear motion in the cylinder chambers and ; a piston holding member which holds the pistons and and rotates around a rotation center X eccentric from the rotary shaft center O of the rotary cylinder member ; and a casing which rotatably supports the rotary cylinder member and has at least one inlet and at least one outlet , wherein the pistons and are rotatably supported at a position away from the rotation center X of the piston holding member by a fixed distance and with that position at the center thereof.

Rotary piston cylinder device with radially extending cylinder chambers intersecting at a rotary axis

Odd- and even-numbered conductors of recording electrodes, for example, first or second recording electrodes, are divided in the direction in which the conductor at the time of winding are stacked up to form different layers so as to increase the distance between the conductors of the adjoining recording electrodes and reduce the floating electrostatic capacitance.

Multi-stylus head and process for producing the same

A multi-needle recording head has retaining members within an electrode support block, each retaining member serving to retain a recording electrode wire. The retaining members can not only lessen a stress generated by the hardening and contracting of a resin, but also prevent generation of defects such as cracks in the vicinity of recording electrodes on a head surface. Further, such multi-needle recording head is obtained by retaining the recording electrode wires by the retaining members, each retaining member having a pressure sensitive adhesive agent or an adhesive arranged at least on a surface thereof contacting the recording electrode wire, with the recording electrode wires wound around the winding jig before the recording electrode wires are cast into the electrode support block made of the electrically insulating resin. The retaining members within the electrode support block contribute to shortening the recording electrode wire supporting pitch, which not only prevents the recording electrode wires from being displaced or slackened due to the charging of the resin, but also prevents the recording electrode wires from being displaced or slackened by controlling the intimate contact between the recording electrode wires due to surface tension of the resin in the vicinity of the head surface or due to linear expansion caused by the heat of the resin to a small degree. Therefore, recording electrodes linearly arranged at a predetermined pitch can be formed.

Multi-needle recording head and method of manufacturing the same

The present invention is directed to an electrostatic recording head comprising an electrode substrate made of an insulating material, a plurality of parallel recording electrodes made of a conductive material and formed on at least one of the side surfaces of the electrode substrate so that tip portions of the recording electrodes are in alignment, a rigid outer member made of an insulating material for covering both side surfaces of the electrode substrate to fix the electrode substrate, and an insulating resin layer filled into a space formed at least at a part of the tip portions of the recording electrodes between each of the side surfaces of the electrode substrate and the outer member, the insulating resin layer also filling gaps between every adjacent two of the recording electrodes, whereby substantially preventing electromigration.

Electrostatic recording head with improved alignment of recording

A recording head for electrostatic recording comprises an electrode substrate formed by bonding together by a bonding agent a pair of substantially planar sub-substrates of an electrical insulating material, each of which is formed on its one surface with a plurality of elongate, equally-spaced and parallel recording electrodes electrically insulated from each other and aligned in a row, so that the electrodes on one of the sub-substrates are located, respectively, opposite to the spaces between adjacent electrodes on the other sub-substrate. In the recording head, the electrode row on each of the sub-substrates has a high degree of linearity, and the dimension in the widthwise direction of the electrode substrate defined by the distance between the electrode row on one of the sub-substrates and that on the other sub-substrate is maintained uniform over the whole longitudinal direction of the electrode substrate. A method of making such a recording head is also disclosed.

Growing community of inventors

Nagano, Japan

Yuki Nakamura