Minolta Camera Kabushiki Kaisha

Minolta Company, Ltd.

Osamu Ebisu

Hideo Hotomi

Kenji Masaki

Kusunoki Higashino

Hideaki Ueda

Junji Machida

Minoru Wada

Takamasa Ueda

Kazuo Ota

A piezoelectric member includes a flat part and a plurality of convex parts on the flat part, and at least a part of each convex part is a piezoelectric element. A non-piezoelectric member is made of non-piezoelectric materials, and includes a plurality of concave parts corresponding to the piezoelectric elements and a convex part formed between adjacent concave parts. The piezoelectric member and the non-piezoelectric member are engaged with each other by inserting each non-piezoelectric convex part between adjacent piezoelectric elements and an ink cavity is formed between a bottom surface of each concave part and a top surface of each piezoelectric element. Also between a side of the piezoelectric convex part and a side of the non-piezoelectric concave part is provided a space, and the space is filled with a filler.

Ink jet recording head including interengaging piezoelectric and non-piezoelectric members

The present invention relates to a developing agent comprising:

Developing agent

Ink jet recording head including interengaging piezoelectric and

The present invention discloses an ink-jet type recorder that forms an ink image on a recording medium comprising a porous ink carrier withholding ink in the pores, an ink tank at a soaking position a transferring device for transferring ink carrier from the soaking position to a recording position where the ink carrier and the recording medium face each other, a heating device for heating the ink withheld in pores of the ink carrier to a certain temperature, the heating device including a contact heater which is in contact with the ink carrier at the recording position so as to conduct heat from the contact heater to the withheld ink, and the certain temperature being sufficiently high to lower the viscosity of the ink but insufficiently high to boil the ink, and an electric field generating device for generating an electric field in order to activate an electrostatic force in such a way that the ink is attracted onto the recording medium from the ink carrier. In one embodiment, the electric field generating device includes an electrode in contact with the porous member between the soaking position and the recording position. In a further embodiment, the ink carrier is fixedly provided and extends from the soaking position to the recording position.

Ink-jet type recorder having an ink carrier and letting ink by combined

The present invention discloses an ink-jet type recorder comprising reserving means for withholding a recording liquid consisting of a mixture of electroviscous liquids (EVL) and coloring materials, the reserving means including a plurality of nozzles from which a jet of the recording liquid spouts out, and a plurality of pairs of electrodes for impressing a voltage to the recording liquid withheld in the reserving means, wherein the impressed voltage to the plurality of pairs of electrodes is controlled in order to change the viscosity of EVL so that a jet of the recording liquid spouts out from the plurality of nozzles onto recording media. Also the present invention discloses an ink-jet type recorder comprising reserving means having an EVL withholding unit for withholding EVL and a recording liquid by way of two separate liquid phases contacting each other at one end, and a plurality of pairs of electrodes for impressing a voltage to EVL withheld in the reserving means, wherein the impressed voltage to the pairs of electrodes is controlled in order to change the volume of EVL so that EVL directly pumps out the recording liquid onto recording media through the plurality of nozzles.

Ink-jet type recorder

Disclosed is an ink jet recording apparatus comprising a piezo-electric body having a plurality of protruding portions; pairs of electrodes each provided on both side surfaces of each protruding portion; a supporting member having a plurality of hollow portions, which are engaged with the plurality of protruding portions in a manner that the space between the top surface of each protruding portion and the inner surface of the bottom of each hollow portion is made an ink room; a plurality of openings each leading to a corresponding ink room; ink supplying devices for supplying ink to the ink rooms; and voltage applying devices for applying voltage between each pair of the electrodes to generate an electric field, which serves to vibrate each protruding portion, thereby jetting ink in the ink rooms in the form of a droplet through the openings.

Growing community of inventors

Toyonaka, Japan

Osamu Ebisu