Fuji Photo Film Company, Limited

Alps Electric Co., Ltd.

Alps Alpine Co., Ltd.

Tatsuo Sugawara

Makoto Hayashi

Kunio Hakkaku

Takaki Tanaka

Hitoshi Yauchi

Koichi Sugiyama

Hiroyuki Sato

Toshiaki Amano

Takashi Onozato

Shuji Fujiwara

Shuichi Aratsu

Osamu Haga

Nakatoshi Satoh

Akihiko Miyashita

First guide supports and second guide supports are integrally formed on an external base material to which external terminals are fixed. Guide protrusions and guide concave parts, which extend vertically, are formed on the housing of a switch device. When each guide protrusion and its corresponding guide concave part are guided by a first guide support and a second guide support during the attachment of the switch device to the external base material, the switch device can be easily attached.

Switch device and detecting apparatus equipped with it

A spring piece is formed integrally as part of a drive arm that presses an operational body. The spring piece is disposed between a pressing part at which the drive arm presses the operational body and a linkage part that acts a swinging fulcrum. A contact part between the spring piece and a case is positioned closer to the linkage part than the bend bottom end is. When the drive arm swings from an initial orientation to a completely swung orientation, the spring piece can generate an elastic return force. The elastic return force does not largely increase even when the drive arm swings.

Pressing input device

A printing device for printing on a supplied paper, said printing device being provided therein with ink ejecting elements for ejecting ink from ink flow paths having nozzles on its front end and formed in ink jet head, and with a controlling means for electrically controlling said ink ejecting elements, said printing device being characterized in that said controlling means is constructed such that electric controlling conditions with respect to said ink ejecting elements are varied according to types of ink used. By such a construction, it becomes possible to drive ejecting elements in an excellent driving conditions adapted to type of ink used, thereby to deliver ink onto paper in a stable manner for carrying out a good quality of printing.

Printing device and printing method

There is disclosed an apparatus for restoring an ink jet recording head which can securely recover the ink jet recording head from the ink non-ejection condition caused by foreign particles or bubbles adhering inside the ink passage of an ejecting nozzle and which can prevent unnecessary bubbles from generating in the ink jet recording head. In the restoring operation, in which foreign particles are discharged together with ink from the ejecting nozzle by pressurizing the ink in an ink tank, an inner pressure of an ink supply passage is adjusted to reach a set pressure value.

Apparatus for restoring ink jet recording head

An air-bubble detection apparatus which detects the presence or absence of the occurrence of air bubbles in an ink passage by detecting if the voltage which develops across an electrostrictive vibrator by mechanical strain as a result of the ink in the ink passage of an ink jet recording head being moved, exceeds an excess voltage above a drive voltage. In addition, a method and apparatus for restoring the recording head to its operating condition, which prevents ink and energy from being wasted and makes efficient printing possible by restoring the recording head in which the occurrence of air bubbles is detected by using the above air-bubble detection apparatus.

Air-bubble detection apparatus of ink jet recording head, and method and

Growing community of inventors

Miyagi-ken, Japan

Tatsuo Sugawara