Patent application number | Description | Published |
20100289854 | MANUFACTURING METHOD FOR LIQUID EJECTING HEAD UNIT, AND LIQUID EJECTING APPARATUS - A liquid ejecting head unit includes liquid ejecting heads, each having a row of nozzles that eject liquid. The liquid ejecting heads are anchored to a base plate. An anchoring plate is anchored to the base plate and positions the liquid ejecting heads relative to the base plate. A reference mark is formed in the anchoring plate and a positioning mark is formed in the base plate for positioning the anchoring plate relative to the base plate. The positioning marks are formed along the direction in which the nozzles are arranged in a row. A related manufacturing method includes selecting the positioning mark in accordance with a predetermined resolution and anchoring the anchoring plate to the base plate so that the reference mark and the selected positioning mark are in the same relative positional relationship. The liquid ejecting heads are anchored to the base plate using the anchoring plate. | 11-18-2010 |
20110221822 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head and a liquid ejection apparatus improved in printing quality by reducing the occurrence of chipping at an opening edge of a positioning hole by a positioning pin are provided. The liquid ejection head includes a head body having a nozzle opening that discharges ink, a base plate provided with the positioning pin, and a positioning plate formed of a silicon substrate and provided with the positioning hole, and the head body is arranged at a predetermined position on the base plate by inserting the positioning pin through the positioning hole, and the opening edge of the positioning hole on the side from which the positioning pin is inserted is chamfered. | 09-15-2011 |
20110316935 | LIQUID EJECTION HEAD - A liquid ejection head including: a flow channel unit including a nozzle plate, and a flow-channel-containing substrate, the nozzle plate and the flow-channel-containing substrate being laminated, a head case formed with a common liquid flow channel configured to supply the liquid to the reservoir and joined to the flow-channel-containing substrate on the side opposite from the nozzle plate; a heater configured to heat the nozzle plate; a head cover heated by the heater and formed with a bottom surface portion opposing the nozzle plate on the side opposite from the head case, wherein a distal end of the head cover comes into abutment with a portion between an area of the nozzle plate corresponding to the reservoir and an area formed with the nozzle row, and a void is formed between the area of the nozzle plate corresponding to the reservoir and the head cover. | 12-29-2011 |
20120007911 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - Provided is a liquid ejecting head unit including: a liquid ejecting head which includes a nozzle ejecting a liquid; and a head fixing member to which a plurality of the liquid ejecting heads is positioned and fixed, wherein the head fixing member includes a head holding unit to which the liquid ejecting head is fixed and a body to which the head holding unit is fixed, and wherein the rigidity of the body is lower than that of the head holding unit and the specific weight of the body is smaller than that of the head holding unit. | 01-12-2012 |
20120007922 | LIQUID EJECTING HEAD UNIT, MANUFACTURING METHOD FOR A LIQUID EJECTING HEAD UNIT, AND LIQUID EJECTING APPARATUS - A sub-carriage includes a housing unit that houses at least part of each of multiple recording heads, and a head passage opening and an upper opening serving as opening portions through which the housing unit passes. A flow channel anchoring member for anchoring a flow channel member is attached to the sub-carriage so as to span across the aforementioned opening portions, and each of the recording heads is sequentially anchored to the sub-carriage to which the flow channel anchoring member has been attached. | 01-12-2012 |
20120013680 | LIQUID EJECTING APPARATUS - At a front-end side opposite to a head-fixing-member-attachment side, a protection member has an inclined plane sloped up from a head side toward the opposite outer side in a direction in which liquid ejecting heads are arranged in a row. The surface of the front end is located at a position that is not closer to a head-fixing member in comparison with the nozzle surface of each of the liquid ejecting heads attached to the head-fixing member or level therewith. A recess is formed at a part of the inclined plane. In a state in which one of the caps faces the protection member and, in addition, each of the remaining caps is in contact with the nozzle surface of the liquid ejecting head, a part of the cap facing the protection member is in the recess, which ensures that the cap is not in contact with the protection member. | 01-19-2012 |
20120044307 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - A flange portion is provided with two abutting protrusions, a spacer is formed with two abutting projections, the respective abutting protrusions and the abutting projections are formed on the outside of a tightening point tightened by a tightening member (a spacer fixing bolt and a spacer fixing nut) in the width direction orthogonal to an imaginary line connecting the tightening points of the flange portions on both sides, and a gap G is formed between the flange portion and the spacer at the tightening point (an opening limb portion of a spacer mounting hole and an insertion hole limb portion of a head insertion hole) before being tightened by the tightening member, while the flange portion and the spacer come into abutment with each other at the tightening point after having tightened in a state in which the abutting protrusions and the abutting protrusions come into abutment with each other. | 02-23-2012 |
20120092415 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - A recording head includes flange portions to which spacers are anchored on both sides of the recording head with a head case therebetween. Spacer attachment holes are provided in the flange portions in the center of the width direction orthogonal to a nozzle row in the recording head, and a round hole and an oblong hole relative to the spacers are provided in the flange portions in positions that are distanced from a center line in the width direction. Positioning holes for the flange portions are provided in the spacers in positions that correspond to the round hole and the oblong hole in the flange portions, and the spacers are anchored to the flange portions on both sides so as to be oriented symmetrically to each other, in a positioned state in which the positions of the positioning holes are aligned with the round hole and the oblong hole. | 04-19-2012 |
20120147093 | LIQUID EJECTING HEAD UNIT, LIQUID EJECTING APPARATUS, AND METHOD OF PRODUCING LIQUID EJECTING APPARATUS - A liquid ejecting head unit includes a liquid ejecting head having a nozzle forming surface provided with nozzle rows consisting of several rows of nozzles for ejecting liquid; and a head fixing member to which the liquid ejecting head is fixed with an intermediate member therebetween. The liquid ejecting head has an intermediate-member fixing portion to which the intermediate member is fixed. The intermediate member has a head-fixing-member bonding surface to be securely bonded to an intermediate-member bonding surface of the head fixing member with adhesive. The head-fixing-member bonding surface has a chamfered portion along at least a portion of an outer edge thereof, the chamfered portion being provided such that the distance from the intermediate-member bonding surface gradually increases from the inner side toward the outer side of the head-fixing-member bonding surface. | 06-14-2012 |
20120147094 | LIQUID EJECTING HEAD UNIT AND MANUFACTURING METHOD THEREOF - A sub-carriage includes a first head mounting portion and a second head mounting portion. The second head mounting portion includes at least a portion of constitution members of an adjustment mechanism which adjusts a position of the second head, a first recording head of one side of the same set is fixed in a state of being positioned to the first head mounting portion so that the nozzles are disposed in a defined position, and a second recording head of the other side is fixed to the second head mounting portion in a state where the relative position to the first recording head is defined by the adjustment mechanism based on a landing position in a recording medium of ink ejected from predetermined nozzles of the second recording head with respect to a landing position in a recording medium of ink ejected from predetermined nozzles of the first head. | 06-14-2012 |
20120176432 | LIQUID EJECTING APPARATUS - When it is assumed that an expected maximum temperature change from a reference temperature during usage of a printer is Δt, an ink landing interval corresponding to raster resolution on a recording medium in a head main scanning direction is P, a maximum distance between nozzle rows of recording heads on a sub carriage is L, a linear expansion coefficient of a linear scale is α2, and a linear expansion coefficient of the sub carriage is α1, L(|α1−α2|)Δt≦P/2 is satisfied. | 07-12-2012 |
20120182348 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - A recording head which ejects ink and a sub carriage, which has a head insertion opening where the recording head is inserted and the recording head is fixed to an opening edge portion of the head insertion opening, are provided and a box beam section is provided in the opening edge portion. The box beam section is configured from a first wall section which has a side surface which faces the head insertion opening, a second wall section which is positioned further to the outside than the first wall section and opposes the first wall section, and a third wall section which connects the first wall section and the second wall section. | 07-19-2012 |
20120182349 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - The head unit includes: a recording head; and a sub-carriage to which the recording head is fixed in a state where spacers are interposed therebetween, wherein each spacer has a spacer main body portion having a base surface which comes into contact with the sub-carriage, and back end-side protrusion portions, reference plane protrusion portions, and leading end-side protrusion portions, which are convex portions that rise from the spacer main body portion to direct toward the flange portion side, to which the spacer is fixed, from the sub-carriage side and which are respectively formed toward a leading end portion of the flange portion in relation to a direction of the nozzle row, at both end portions in a width direction perpendicular to the nozzle row of the recording head, each reference plane protrusion portion has a surface that becomes a reference plane which comes into contact with the flange portion. | 07-19-2012 |
20130293627 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - A liquid ejecting head unit includes a liquid ejecting head that ejects liquid through a nozzle formed in a nozzle surface, and a holding member to which the liquid ejecting head is attached. Further, in the liquid ejecting head unit, the holding member includes a holder that supports the liquid ejecting head in a predetermine direction which is different from a direction of the nozzle surface of the liquid ejecting head, and a base portion that sticks out from the holder to a side which is parallel to the predetermined direction. | 11-07-2013 |
20140240386 | LIQUID EJECTING APPARATUS - Provided is a liquid ejecting apparatus including a first temperature sensor for detecting ink temperature and a second temperature sensor for detecting ambient temperature of a liquid ejecting head, in which a controller for controlling discharge of the ink generates a driving signal including a discharge voltage which is used for, based on a temperature detected by the first temperature sensor, discharging ink droplets through nozzle openings and a fine-oscillation voltage which is used for finely oscillating meniscuses of the ink without discharging the ink droplets and corresponds to the discharge voltage. Furthermore, the controller sets a coefficient in accordance with a temperature difference between the ink temperature and the ambient temperature and controls an energy level of the fine oscillation by applying the fine-oscillation voltage, based on the coefficient. In addition, the controller causes the discharge voltage to be applied to a pressure generation unit corresponding to the nozzle openings through which the ink droplets are discharged and causes the fine-oscillation voltage to be applied to a pressure generation unit corresponding to the nozzle openings through which the ink droplets are not discharged. | 08-28-2014 |
20140292905 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS - A liquid ejecting head unit includes a plurality of heads having a nozzle surface in which nozzle openings that eject ink are provided; a cover head that protects the nozzle surfaces of the heads, and a cover that covers the heads and between the nozzle surfaces of each head, in which the cover has a conducting portion that conducts with the cover head of the head. | 10-02-2014 |
20140292933 | LIQUID EJECTING HEAD MODULE AND LIQUID EJECTING APPARATUS - A unit head has an inlet section that introduces ink from a side of a sub-tank through a porous member. The sub-tank has a pressure control section corresponding to each unit head, individually, and has an outlet section that delivers the ink from the pressure control section through a porous member. The pressure control section has a valve and a film that is displaced in response to a pressure change. The film is provided in an upper surface of the sub-tank. A frame has an inlet-side connection section to which the outlet section of the sub-tank is connected, an outlet-side connection section to which the inlet section of the unit head is connected, and a communication flow path that communicates with both connection sections. Both of the connection sections include porous members, and supply and receive the ink by a surface contact of the porous members with each other. | 10-02-2014 |
20140292938 | LIQUID EJECTING HEAD MODULE AND LIQUID EJECTING APPARATUS - A unit head has a head main body having a nozzle surface, and a substrate case having a fastening surface fastened to a fixation frame of a frame and accommodating a relay substrate. The fastening surface of a substrate case is formed at a position closer to a surface of an opposite side to a fixation frame than a side surface of a fastening surface side of the head main body, and the head main body is positioned further at an ink ejecting side than the fixation frame with the faster surface being fixed to the fixation frame, the other end of a first cable whose one end is connected to the electrode terminal of a piezoelectric element is connected to the relay substrate, a second cable connected to the relay substrate is drawn to an opposite side to a nozzle surface from a position close to a surface of an opposite side to the fastening surface, and the other end of the second cable is connected to a drive substrate. | 10-02-2014 |