摘要:
Disclosed is an ink jet recording apparatus and an ink jet head which ejects an ink droplet from an ink chamber via an orifice in response to transformation of a piezoelectric member. The ink jet head has a non-piezoelectric member having a groove; a film provided on the non-piezoelectric member to cover the groove, a space formed between the groove and the film being used as the ink chamber; and a piezoelectric member provided on the film corresponding to the ink room. The piezoelectric member has a plurality of surfaces one of which is fixedly connected with the film corresponding to the ink room and other of which are facing to air.
摘要:
A piezo-electric actuator is rigidly mounted for a portion of one surface and provided with opposing electrodes for application of a bias. Because the mounted portion is constrained from deformation, the piezo-electric actuator deforms in a bending manner upon application of a bias. The actuator is provided with a mirror surface for selective reflection of an incident light beam in accordance with a bending deformation of the actuator. The actuator can also modulate a light beam by selectably deflecting into the light path to thereby block the light beam.
摘要:
A method of producing a cylindrical piezoelectric element includes: (a) injecting the molding fluid containing calcined powder of piezoelectric material in a mold having cylindrical cavity and wire-shaped core inserted therein; (b) heating to dry the molding fluid injected in the mold so as to obtain cylindrical member; (d) removing cylindrical member from the mold; and (e) sintering the cylindrical member to obtain a piezoelectric element.
摘要:
An inkjet recording apparatus which discharges ink onto a recording medium in response to an image signal. The above inkjet recording apparatus has an ink accommodating portion which has a plurality of ink chambers each of which accommodates ink therein and is integrally formed, thereby the ink pressurization characteristics between the ink chambers is uniform.
摘要:
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.
摘要:
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.
摘要:
Disclosed is an ink jet head which ejects an ink drop from an ink room throughout an orifice in response to deformation of piezoelectric member. The ink jet head has a non-piezoelectric member having a groove; a film provided on the non-piezoelectric member to cover the groove, the space formed between the groove and the film being uses as the ink room; a substrate provided opposing to the film; and a piezoelectric member having a first surface, the first surface contacting with the substrate corresponding to the ink room. A part of the first surface is fixedly connected with the substrate. The remaining part of the first surface is facing to the substrate, but is not fixedly connected.
摘要:
The present invention relates to an ink jet recording apparatus using an electrostatic actuator. The present invention provides an ink jet recording apparatus comprising a resilient oscillating plate that is facing a pressure chamber that communicates with a nozzle, a first electrode provided on said oscillating plate, a second electrode opposing said first electrode across a space, and a voltage application unit that applies across the first electrode and the second electrode a first voltage that causes the ink in said pressure chamber to be ejected and a second voltage that does not cause the ink to be ejected, wherein said second voltage is applied a specified time prior to the application of the first voltage, so that the residual electrical charges on the first electrode and/or the second electrode can be positively discharged.
摘要:
An ink jet head for a printer wherein an ink drop is ejected from a nozzle to fly and land on the recording paper to form an image. The ink jet head includes the nozzle for ejecting ink, an ink channel that communicates with the nozzle, a pair of oscillating plates that are opposing to each other on walls of the ink channel, a pair of electrodes disposed in contact with the oscillating plates, an ink chamber for holding the ink, and an inlet for supplying the ink from the ink chamber to the ink channel. A gap between the electrodes is filled with the ink having a relative dielectric constant higher than air. A voltage is applied between the electrodes.
摘要:
In an ink-jet recording head using piezoelectric members, unwanted ejection of an ink material due to cross-talk is prevented. A head 10 comprises a channel plate 16 provided with a plurality of nozzles 28 and ink cavities 26, respectively, a diaphragm 18 adapted to cover the ink cavities, a vibration plate 20 with a plurality of piezoelectric members opposed to respective ink cavities through the diaphragm and a base plate 22 for supporting the piezoelectric members. The base plate 22 is formed such that a value of the elastic modulus multiplied by the thickness thereof is about 9.0.times.10.sup.3 (kgf/mm) or more.