公开(公告)号：US20190118214A1

公开(公告)日：2019-04-25

申请号：US16221431

申请日：2018-12-14

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander N. Govyadinov ,  Paul A. Richards

IPC: B05C5/02 ,  B41J2/14 ,  B41J2/175

CPC classification number: B05C5/02 ,  B41J2/1404 ,  B41J2/14201 ,  B41J2/175 ,  B41J2/17563 ,  B41J2/17596 ,  B41J2002/14403 ,  B41J2002/14467 ,  B41J2202/12

Abstract: A fluid ejection apparatus may include a drop generator to eject fluid droplets in a vertical direction and a fluid channel containing the drop generator. The fluid channel may include a vertical inlet through which fluid is to enter the fluid channel and a vertical outlet through which fluid not ejected by the drop generator is to be circulated out of the fluid channel.

公开(公告)号：US20190054741A1

公开(公告)日：2019-02-21

申请号：US15743699

申请日：2016-07-11

Applicant: Jan Franck

Inventor： Jan Franck

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/04581 ,  B41J2/04503 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04595 ,  B41J2/14201

Abstract: The invention relates to a method for actuating an inkjet print head, comprising at least one printing system having a nozzle on the side of an ink chamber which faces a substrate to be imprinted, and which is delimited at least in areas, preferably in its area facing away from the print substrate, by a diaphragm that is movable away from the ink chamber by electrically actuating a piezo element that is mechanically coupled to the diaphragm, so that ink is drawn into the ink chamber from a reservoir, and the diaphragm is movable into the ink chamber so that an ink drop is ejected from the ink chamber through the nozzle, wherein the printing system made up of the ink chamber, diaphragm, piezo element, and the electronic control system thereof represents an oscillatable structure which, when actuated at high energy, is excited to oscillate at a natural frequency fres that exhibits resonance; i.e. the oscillation with the period Tres=1/fres undergoes little or no attenuation, and wherein the brightness of a pixel to be printed is varied in that, for each pixel, a sequence of multiple ink drops is ejectable in succession from the same nozzle at a time interval of Tdrop=1/fdrop, and energy is only introduced into the printing system via the actuation signal precisely when an ink drop is actually to be ejected.

公开(公告)号：US20180345670A1

公开(公告)日：2018-12-06

申请号：US15611179

申请日：2017-06-01

Applicant: Xerox Corporation ,  Brown University

Inventor： Peter J. Nystrom ,  Gary D. Redding ,  Angus Ian Kingon ,  Seunghyun Kim ,  Nicholas Mostovych

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14233 ,  B41J2/14201 ,  B41J2/161 ,  C04B35/453 ,  C04B35/475 ,  C04B2235/768

Abstract: An apparatus for a lead-free piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a diaphragm, a plurality of piezoelectric actuators comprising a lead-free piezoelectric material, at least one nozzle, at least one ink chamber, a top electrode, and a drive circuit. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment, a lead-free piezoelectric printhead operated at smaller thicknesses and significantly higher electric fields is disclosed, along with methods of making such printheads.

公开(公告)号：US20180323729A1

公开(公告)日：2018-11-08

申请号：US15967875

申请日：2018-05-01

Applicant: Seiko Epson Corporation

Inventor： Yutaka ARAKAWA ,  Tomohisa IWAZAKI

IPC: H02N2/10 ,  H02N2/00 ,  B65G23/22 ,  B25J9/00 ,  B41J2/14

CPC classification number: H02N2/103 ,  B25J9/0009 ,  B41J2/14201 ,  B65G23/22 ,  G03B21/142 ,  H01L21/67706 ,  H02N2/0055

Abstract: A first member, a second member, a bearing that rotatably supports the second member about a rotation axis relative to the first member, a driven member placed on the first member, and a plurality of piezoelectric actuators that transmit driving forces for rotating the second member about the rotation axis relative to the first member to the driven member are provided, and the piezoelectric actuators are supported by the second member while being pressed against the first member or the member fixed thereto, and, as seen from a direction along the rotation axis, a center of pressing forces from the plurality of piezoelectric actuators to the driven member is located inside of an outer circumferential part of the bearing.

公开(公告)号：US20180304621A1

公开(公告)日：2018-10-25

申请号：US15843001

申请日：2017-12-15

Applicant: Enjet Co. Ltd.

Inventor： Do Young BYUN

IPC: B41J2/045 ,  B41J2/175 ,  B41J2/14 ,  B41J2/07

CPC classification number: B41J2/04511 ,  B41J2/04 ,  B41J2/072 ,  B41J2/1408 ,  B41J2/14104 ,  B41J2/14201 ,  B41J2/175 ,  B41J2202/02 ,  H05K2203/013

Abstract: The present disclosure relates to an ink jetting apparatus and a printing system including the same, the ink jetting apparatus including a liquid droplet generating unit configured to generate liquid droplets and jet the generated liquid droplets, a guide channel unit having a channel to guide the jetted liquid droplets and control evaporation of the liquid droplets, and being configured to protect the liquid droplets from thermal and physical disturbance; and a nozzle unit configured to discharge the liquid droplets that passed through the guide channel unit towards a substrate.

公开(公告)号：US20180304486A1

公开(公告)日：2018-10-25

申请号：US15958761

申请日：2018-04-20

Applicant: SEIKO EPSON CORPORATION

Inventor： Masashi NAKATSU

IPC: B26D7/00 ,  B26D1/20 ,  B26D5/06 ,  B65H35/00 ,  B65H20/02 ,  B41J11/70 ,  B41J11/06 ,  B41J15/06

CPC classification number: B26D7/0006 ,  B26D1/185 ,  B26D1/205 ,  B26D5/02 ,  B26D5/06 ,  B26D5/16 ,  B26D2007/005 ,  B26D2210/11 ,  B41J2/06 ,  B41J2/14016 ,  B41J2/14201 ,  B41J11/06 ,  B41J11/70 ,  B41J11/706 ,  B41J15/06 ,  B65H20/02 ,  B65H35/0086

Abstract: A cutting portion (cutting device) includes a fixed blade that extends in an intersecting direction (X axis direction) intersected with a transport direction transporting a roll paper, and a round blade that cuts the roll paper by relatively moving in the intersecting direction (X axis direction) with respect to the fixed blade in a state of being abutted on the fixed blade, in which the fixed blade extends over a portion of a range where the round blade relatively moves, and the round blade is in a separation state of being separated from the fixed blade in the transport direction when entering a region facing the fixed blade (cutting operation region) from a region not facing the fixed blade (standby region).

公开(公告)号：US20180277738A1

公开(公告)日：2018-09-27

申请号：US15935539

申请日：2018-03-26

Applicant: Seiko Epson Corporation

Inventor： Koji OHASHI ,  Takahiro KAMIJO ,  Katsuhiro IMAI ,  Takumi YAMAOKA ,  Chikara KOJIMA

IPC: H01L41/047 ,  H01L41/053 ,  H01L41/187 ,  H01L41/09 ,  H01L41/29 ,  B06B1/02 ,  B06B1/06 ,  G01N29/24 ,  A61B8/12 ,  A61B8/06

CPC classification number: H01L41/0475 ,  A61B8/06 ,  A61B8/12 ,  B06B1/0215 ,  B06B1/0622 ,  B06B1/067 ,  B06B2201/76 ,  B41J2/14201 ,  G01N29/245 ,  H01L41/047 ,  H01L41/0477 ,  H01L41/0533 ,  H01L41/09 ,  H01L41/0973 ,  H01L41/1876 ,  H01L41/29

Abstract: A piezoelectric element has a first electrode layer, a piezoelectric layer on the first electrode layer, a second electrode layer on the piezoelectric layer, a third electrode layer on part of the second electrode layer and including third metal, and an insulating layer covering at least a part of the piezoelectric layer not provided with the second electrode layer and having an aperture exposing a part of the second electrode layer. The second electrode layer has a first layer including first metal and a second layer including second metal on the first layer. The second layer is exposed in the aperture. A difference in standard redox potential between the second metal and the third metal is smaller than a difference in standard redox potential between the first metal and the third metal.

公开(公告)号：US20180272738A1

公开(公告)日：2018-09-27

申请号：US15762248

申请日：2016-09-06

Applicant: RISO KAGAKU CORPORATION

Inventor： Hiroshi SUGITANI

IPC: B41J2/18 ,  B41J2/175

CPC classification number: B41J2/18 ,  B41J2/01 ,  B41J2/14201 ,  B41J2/175 ,  B41J2/17556 ,  B41J2/17596 ,  B41J2202/02

Abstract: An inkjet printer includes: a pressurized space and a depressurized space for circulation of ink along a circulation path; a main connection path and an adjustment path connecting the pressurized space and the depressurized space to each other; an air pump configured to send air from the depressurized space to the pressurized space though the main connection path or the adjustment path; a changeover device configured to change over between the main connection path and the adjustment path; and a controller. The controller drives the air pump with the main connection path being set to generate preset pressures respectively in the pressurized space and the depressurized space and then controls the air pump with the adjustment path being changed over to maintain pressures in the pressurized space and the depressurized space respectively at the preset pressures.

公开(公告)号：US20180272697A1

公开(公告)日：2018-09-27

申请号：US15919636

申请日：2018-03-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Motonori CHIKAMOTO ,  Toru MATSUYAMA

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/04515 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2002/14241 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2002/14491 ,  B41J2202/13

Abstract: A liquid ejecting head includes: a piezoelectric element driven with a drive signal; a switch circuit which is provided on a circuit substrate; a pressure chamber which is filled with liquid and changes pressure inside in accordance with the drive by the piezoelectric element; and a reserve chamber which reserves the liquid to be supplied to the pressure chamber. The piezoelectric element is provided in a sealed space defined by a plurality of members including the circuit substrate. The reserve chamber includes a first flow channel and a second flow channel. A first end of the first flow channel communicates with a first end of the second flow channel. A second end of the first flow channel communicates with a second end of the second flow channel. The circuit substrate and switch circuit are provided between the first flow channel and the second flow channel.

公开(公告)号：US20180272333A1

公开(公告)日：2018-09-27

申请号：US15889807

申请日：2018-02-06

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Masaaki HIGUCHI ,  Seiya SHIMIZU ,  Ryutaro KUSUNOKI ,  Shuhei YOKOYAMA

IPC: B01L3/02

CPC classification number: B01L3/0241 ,  B01L3/0268 ,  B01L2200/021 ,  B01L2200/0621 ,  B01L2200/143 ,  B01L2300/0829 ,  B01L2300/10 ,  B01L2400/0487 ,  B41J2/14201 ,  B41J2/16579 ,  B41J2202/15 ,  G01N2035/1041

Abstract: According to one embodiment, a droplet dispensing apparatus includes a droplet ejection array having a plurality of nozzles from which droplets can be ejected into a well opening of a microplate plate on a baseplate, the plurality of nozzles being arranged in columns in a first direction and rows in a second direction that intersects the first direction, a light emitting unit configured to emit light having polarization perpendicular to a third direction oblique with respect to the first direction and the second direction, and a light receiving unit configured to receive light from the light emitting unit, the light receiving unit being on an opposite side of the droplet ejection array from the light emitting unit.