Patent application number | Description | Published |
20080204512 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow channel unit including a flow-channel-formed substrate that defines liquid flow channels including pressure chambers communicating with nozzle openings and a sealing plate formed with a diaphragm that varies the capacities of the pressure chambers and a liquid introduction hole, the sealing plate being joined to the flow-channel-formed substrate and defining lines of liquid flow channels including pressure chambers; and a head case including a storage chamber that accommodates a pressure generator for displacing the diaphragm and a case flow channel for supplying liquid to the liquid flow channel of the flow channel unit, the diaphragm being arranged at an opening of the storage chamber on the bottom surface side and the flow channel unit being joined to the head case in a state in which the case flow channel and the liquid flow channel are communicated with each other via the liquid introduction hole, and the sealing plate is formed of a composite plate member formed by adhering an electrically conductive supporting substrate which is joined to the head case and an insulative elastic film joined to the flow-channel-formed substrate to each other, the inner diameter of the liquid introduction hole at least on the side of the supporting substrate is set to be larger than the inner diameter of the case flow channel to form a shoulder portion between the case flow channel and the liquid introduction hole, and an insulating material is secured in the shoulder portion. | 08-28-2008 |
20080297561 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes a plurality of nozzle groups each including a plurality of nozzle openings; and a plurality of pressure generating chambers that cause liquid to be ejected from the nozzle openings. A plurality of recessed portions are formed at a nozzle forming member, the recessed portions each having a thickness smaller than a thickness of the nozzle forming member, the nozzle openings being formed at the recessed portions. A set of at least one of the plurality of nozzle openings included in each single nozzle group defines a nozzle set, the nozzle set being arranged to correspond to each of the pressure generating chambers. The nozzle groups each have a plurality of nozzle sets in an array, the nozzle sets of one of the nozzle groups being relatively shifted from the nozzle sets of another one of the nozzle groups in a nozzle-set-array direction. | 12-04-2008 |
20090073234 | HEATING CHANNEL UNIT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A heating channel unit which includes a communicating channel for supplying liquid from a liquid supply source to a liquid ejecting head. The heating channel unit is detachably mounted between the liquid supply source and the liquid ejecting head, and includes a heat generator which heats the liquid in the communicating channel. | 03-19-2009 |
20090231391 | LIQUID JET HEAD AND A LIQUID JET APPARATUS - A liquid jet head includes: a pressure generation element; a nozzle plate which is provided with a nozzle opening; a pressure generating chamber plate in which a pressure generating chamber for communicating to the nozzle opening is formed; and a nozzle communication plate in which a communication through hole for communicating the one pressure generating chamber with a plurality of nozzle openings is provided between the nozzle plate and the pressure generating chamber plate, so that, for example, a plurality of the nozzle openings can be disposed in a lined-up direction of the pressure generating chambers at a predetermined pitch smaller than a lined-up pitch of the pressure generating chamber. | 09-17-2009 |
20090278896 | LIQUID JETTING HEAD - Disclosed is a liquid jetting head which can contribute to downsizing. A head unit | 11-12-2009 |
20100013893 | LIQUID EJECTING HEAD - A liquid ejecting head includes: a flow path unit including a nozzle forming member with a plurality of nozzle orifices provided in a row, and a flow path forming substrate made of a metal, in which pressure generating chambers in communication with the nozzle orifices are formed; and an actuator unit for giving a pressure fluctuation to the pressure generating chambers, wherein a recess portion is formed in a side of the flow path forming substrate, which faces the nozzle forming member, in a sunken state from a surface of the flow path forming substrate, and a heater is received in the recess portion. | 01-21-2010 |
20110187796 | LIQUID EJECTING HEAD, LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - There is provided a liquid ejecting head including pressure generation chambers that communicate with nozzle openings from which liquid droplets are discharged, liquid flow paths that communicate with the pressure generation chambers, and pressure generation units that generate pressure for discharging liquid droplets in the pressure generation chambers. In the liquid ejecting head, foam members formed with closed cells are provided in the liquid flow paths. | 08-04-2011 |
20120176450 | LIQUID-EJECTING HEAD AND LIQUID-EJECTING APPARATUS - A liquid-ejecting head includes a nozzle plate having a nozzle opening that serves for liquid ejection; a channel-forming substrate including pressure-generating chambers that are in communication with the nozzle opening; a pressure generator that serves to generate pressure change in a liquid in the pressure-generating chambers; and a communication plate provided between the nozzle plate and the channel-forming substrate, the communication plate having a communication channel that forms a communication between the pressure-generating chambers and the nozzle opening. The communication plate has a circulation channel that is in communication with a common liquid chamber through the communication channel, the common liquid chamber being in communication with a plurality of the pressure-generating chambers in common. | 07-12-2012 |
20140285574 | HEAD UNIT AND LIQUID EJECTING APPARATUS - A head unit, in which unit head rows are formed by respectively arraying unit heads in parallel on both sides of a transmission substrate. The head unit includes a first liquid fluid channel that is disposed on a first side of the transmission substrate and a second liquid fluid channel that is disposed on a second side of the transmission substrate. The unit heads are provided with a flexible cable. A first head fluid channel sandwiches the flexible cable and is provided on a side that is opposite a transmission substrate side. A second head fluid channel is provided on the transmission substrate side. The first head fluid channel is in communication with a first liquid fluid channel on a surface side on which the unit heads are disposed. The second head fluid channel straddles the transmission substrate and is in communication with a second liquid fluid channel on a surface side that is opposite the unit heads. | 09-25-2014 |