| Patent application number | Description | Published |
|---|
| 20080284814 | CAP AND INK-JET HEAD PROTECTION ASSEMBLY - A head cap for protecting an ink ejecting face of an ink-jet head may be provided with a plate member. The plate member may be opposed to the ink ejecting face. The head cap may include a flexible, continuous lip, which projects from one surface of the plate member. Recesses may be formed in the one surface of the plate member. Through-holes may be formed through the bottom walls of the recesses, respectively. Films may further be used where each covers the associated through-hole and is joined partially to a circumferential edge portion of the associated recess. | 11-20-2008 |
| 20090027446 | IMAGE RECORDING APPARATUS - An image recording apparatus includes liquid ejection heads, wipers, and a movement means. The liquid ejection heads respectively have ejection faces, and are arranged in such a manner that the ejection faces form two rows extending in one direction and in addition two of the ejection faces included in different rows do not overlap each other along a direction perpendicular to the one direction. The liquid ejection heads are divided into one or more head groups each including two of the liquid ejection heads corresponding to the different rows. The movement means moves two of the wipers associated with two liquid ejection heads belonging to each head group, from inner end portions of the ejection faces in opposite directions along the perpendicular direction while keeping the two wipers in contact with the ejection faces. | 01-29-2009 |
| 20090027447 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a plurality of liquid ejection heads, and a plurality of wipers. The plurality of liquid ejection heads are divided into a plurality of head groups each including two of the liquid ejection heads. When in a wiper withdrawal position, the wiper associated with one of the liquid ejection heads belonging to each head group is positioned so as to overlap the one liquid ejection head along a direction perpendicular to one direction and in addition overlap the other of the liquid ejection heads along the one direction, while the wiper associated with the other liquid ejection head is positioned so as to overlap the other liquid ejection head along the perpendicular direction and in addition overlap the one liquid ejection head along the one direction. | 01-29-2009 |
| 20090153615 | LIQUID EJECTION DEVICE - A liquid ejection device includes: a conveyance mechanism which conveys a recording medium in one direction; a plurality of liquid ejection heads each having an ejection face which has a plurality of ejection openings for ejecting liquid and faces the conveyance mechanism, the liquid ejection heads being arranged along the one direction; a plurality of wipers which respectively wipe the ejection faces; a holder which holds the wipers; a support which supports the holder; and a movement mechanism which moves the holder in a direction perpendicular to the one direction. The holder is displaceable in the one direction relative to the support. The holder has an intruder which intrudes into a gap between two liquid ejection heads adjacent to each other. | 06-18-2009 |
| 20090189943 | IMAGE RECORDING APPARATUS - An image recording apparatus including: (a) a head assembly including (a-1) recording heads having respective nozzle opening surfaces and (a-2) a head frame supporting the recording heads; (b) annular protrusions each of which is to be brought into contact with the head assembly, so as to surround the plurality of nozzles opening in the corresponding nozzle opening surface; (c) a supporting tray elongated in a supporting-tray longitudinal direction and supporting the annular protrusions; (d) a movement mechanism configured to move the head assembly and/or the supporting tray, and (e) a positioning pin projecting from a pin-located portion of the supporting tray. The pin-located portion is outside the annular protrusions, and is located in a center of the supporting tray in the supporting-tray longitudinal direction. The head frame has a positioning hole, into which the positioning pin is to be introduced upon contact of each annular protrusion with the head assembly. | 07-30-2009 |
| 20090189946 | LIQUID EJECTING APPARATUS - A liquid delivering apparatus including: a liquid ejecting head having an ejection surface; a maintenance unit including a roller, a sheet member having a liquid receiving section; a sheet-member moving mechanism configured to move the sheet member; and a wiper configured to wipe the ejection surface while moving in a first direction; and a maintenance-unit moving mechanism configured to move the maintenance unit between a maintenance position and a retracted position; a maintenance-unit controller configured to control the maintenance-unit moving mechanism to move the maintenance unit; and a sheet-member-movement controller configured to control the sheet-member moving mechanism to move the liquid receiving section between a receive position and a non-receive position at the maintenance position, wherein, when the maintenance unit is located at the maintenance position, the liquid receiving section is moved from the receive position to the non-receive position without being covered with the sheet member per se while the wiper wipes the liquid ejection region. | 07-30-2009 |
| 20100053240 | INKJET RECORDING APPARATUS - An inkjet recording apparatus including: (a) a recording head; (b) an ink supply source; (c) an ink supply conduit interconnecting the recording head and the ink supply source, such that the ink is supplied from the ink supply source to the recording head in an ink supplying direction; (d) a movable body disposed in the ink supply conduit and movable in the ink supply conduit; (e) a moving device configured to move the movable body in the ink supply conduit; and (f) a control device configured to control the moving device. The ink supply conduit includes a small-clearance defining portion in which a small clearance is to be defined between the movable body and an inner surface of the ink supply conduit when the movable body is being positioned in the small-clearance defining portion. The control device is configured to control the moving device, such that the movable body is moved from a first position located in the small-clearance defining portion, to a second position located in the small-clearance defining portion, whereby the ink within the small-clearance defining portion is caused to flow toward the recording head. | 03-04-2010 |
| 20100079513 | LIQUID-EJECTION APPARATUS - A liquid-ejection apparatus, including: a head configured to eject a liquid from a plurality of liquid-ejection openings; a main tank configured to accommodate the liquid supplied to the head; a liquid-supply pump configured to supply the liquid in the main tank to the head; a sub-tank in which are formed (a) a connection opening for connecting the sub-tank to the head and (b) an air-discharge opening for communicating the sub-tank with ambient air; a first channel extending from the liquid-supply pump to the sub-tank via the head and the connection opening; a second channel extending from the sub-tank to the liquid-supply pump; a third channel extending from the air-discharge opening of the sub-tank to the ambient air; an air-discharge valve provided in the third channel so as to be openable and closable; and a controller configured to control the air-discharge valve such that the air-discharge valve is temporarily opened in a liquid introducing operation in which the liquid is introduced from the main tank to the liquid-supply pump and an air discharging operation in which air separated from the liquid in the sub-tank by causing the liquid to be flowed through the first channel by driving of the liquid-supply pump is discharged through the third channel, and such that the air-discharge valve is closed in times other than the liquid introducing operation and the air discharging operation. | 04-01-2010 |
| 20110122204 | INK JET HEAD - When all metal plates for forming a passage unit of an ink jet head are bonded together by metal bonding, a top metal plate will warp, and an actuator unit cannot be fitted in a uniform manner to this warped top metal plate, and if the actuator units are not fitted in a uniform manner to the top metal plate, a uniform amount of ink cannot be discharged from nozzles of the ink jet head. To deal with this, metal diffusion bonding of the metal plates is performed without the top metal plate being included therein, and the top metal plate is then caused to adhere by means of adhesive. There is thus no warping of the top metal plate, and consequently the actuator units can be fitted in a uniform manner to the top metal plate. | 05-26-2011 |
