Brother Kogyo Kabushiki-kaisha

Nippon Telecommunication Eng. Co.

Shigeru Mizuno

Osamu Takagi

Makoto Suzuki

Masahiko Suzuki

Kazuo Sangyoji

Kiyomitsu Asano

Masaaki Deguchi

Toshikatsu Kondo

Masutaro Katsu

Haruki Mizuno

A piezoelectric ceramic composition comprises a composite perovskite type oxide of Pb(NiNb)Oand simple perovskite type oxides of PbTiOand PbZrOas main components. The composition range of the main components exists in an area surrounded by lines for connecting respective composition points, i.e., a point A (X=40, Y=37, Z=23), a point B (X=36, Y=37, Z=27), a point C (X=33, Y=40, Z=27), and a point D (X=37, Y=40, Z=23) in a triangular coordinate system defined by apexes of Pb(NiNb)O, PbTiO, and PbZrO, provided that Pb(NiNb)Oamounts to X molar %, PbTiOamounts to Y molar %, and PbZrOamounts to Z molar %. The composition makes it possible to realize a large strain amount while suppressing the relative dielectric constant to be low. The composition is preferably usable for an piezoelectric actuator of an ink-jet head.

Piezoelectric ceramic composition and piezoelectric actuator for ink-jet head based on use of the same

A hot melt ink jet apparatus is disclosed which heats a normally solid ink into a molten state and then ejects the molten ink toward a printing sheet. When printing is performed on the printing sheet, the ink ejected onto the printing sheet quickly solidifies. After the printing operation, the printed sheet is fed between a supporting member and a pressing member. An intervention member is provided between the printed sheet and pressing member. The intervention member includes a layer which has a low cohesiveness and is softer than lumps of solidified ink on the printing sheet.

Hot melt ink jet apparatus having intervention member located between

An electrophotographic printer having a movable image developing device for forming a visible image on a photosensitive sheet. The printer contains a sheet handling unit having a light receiving portion for feeding the photosensitive sheet to the light receiving portion and for discharging the same therefrom; an exposure unit containing a cathode ray tube which projects its displaying image onto the photosensitive sheet when the sheet is at the light receiving portion so as to produce an electrostatic latent image on the sheet; and, the image developing device selectively movable between first and second positions, the developing device containing a developer for developing the electrostatic latent image into the visible image with the developer. A copying apparatus is also disclosed whose CRT in an exposure unit has a scrolling function. The copying apparatus also provides a control for controlling scrolling speed in synchronization with the feeding speed of the sheet. The CRT used in the above described device has a screen whose edge portion provides brightness higher than that of the remaining portion.

Image recording apparatus provided with exposure unit using cathode ray

A flux-path forming member of a motor is prepared from a mixture mass by evenly mixing up to 4% of a thermosetting resin binder and molybdenum disulfide with at least 96% of a metal powder, fibrous metal, or a combination thereof; a second step of compacting in a mold under pressure the mixture mass into a desired shape; and a third step of heating, concurrently with or subsequently to the second step, the mixture mass to an elevated temperature to cure the binder portion thereof. The compact prepared by the above process is also disclosed. The content of the thermosetting resin at least 0.2 percent by weight, and the content of the molybdenum disulfide is at least 0.1 percent by weight. The curing operation is conducted at a temperature not higher than 300.degree. C.

Press-molding process for preparing a powder compact

A print head adapted to be used for a dot-printer. A novel support device is disposed in the print head for pivotally supporting one end of each of a plurality of armatures on a support member. The support device in this invention comprises; (a) a leaf spring disposed longitudinally of the armature, secured at one end thereof to the support member and at the other end thereof to the armature, and provided in a middle portion thereof with a through-bore, and (b) a wire spring extending through the through-bore in the leaf spring at a right angle thereto, and secured at one end thereof to the support member and at the other end thereof to the armature.

Growing community of inventors

Nagoya, Japan

Shigeru Mizuno