Abstract: A head unit including: an inkjet head that ejects ink; and a fixer to which the inkjet head is fixed, wherein an engaging part is provided to be fixed to one of the inkjet head and the fixer, and an engaged part is provided to be fixed to the other, the inkjet head is fixed to the fixer by engaging the engaging part and the engaged part, and in the engaging part or the engaged part, a rigidity of a portion including one part of an engagement surface on which the engaging part and the engaged part engage with each other is lower than a rigidity of the other portion.

Abstract: There is provided an inkjet recording apparatus includes a conveyance unit, a head unit, an attachment member, a fixing member, and a support member. The conveyance unit conveys a recording medium on an outer circumferential curved surface of a cylindrical conveyance drum rotating around a cylindrical shaft. The relative position of the attachment member to the cylindrical shaft is fixed. The head unit has a nozzle ejecting ink and is attached to the attachment member such that the outer circumferential curved surface faces an opening of the nozzle across a predetermined relative distance. The fixing member fixes a fixing portion in the head unit to the attachment member. The fixing portion is between a center of gravity of the head unit and the cylindrical shaft. The support member supports the fixed head unit by applying force which disturbs rotation of the head unit.

Abstract: Ahead module includes: an inkjet head that ejects ink; and a mounting member on which the inkjet head is mounted, wherein the inkjet head is mounted on the mounting member by being pressed against the mounting member by a presser, and a mounting position to the mounting member is adjusted by a position adjuster in a direction intersecting with a pressing direction of the presser.

Abstract: There is provided an inkjet recording apparatus includes a conveyance unit, a head unit, an attachment member, a fixing member, and a support member. The conveyance unit conveys a recording medium on an outer circumferential curved surface of a cylindrical conveyance drum rotating around a cylindrical shaft. The relative position of the attachment member to the cylindrical shaft is fixed. The head unit has a nozzle ejecting ink and is attached to the attachment member such that the outer circumferential curved surface faces an opening of the nozzle across a predetermined relative distance. The fixing member fixes a fixing portion in the head unit to the attachment member. The fixing portion is between a center of gravity of the head unit and the cylindrical shaft. The support member supports the fixed head unit by applying force which disturbs rotation of the head unit.

Abstract: An ink heating device that is disposed on an inkjet recording device and heats ink includes an ink tank and at least one heater to heat the ink tank. The ink tank is an integrated unit of subtanks storing ink disposed along the longitudinal direction. The at least one heater heats both longitudinal ends of the ink tank to a temperature higher than a temperature of a central area in the longitudinal direction of the ink tank.

Abstract: An ink heating device that is disposed on an inkjet recording device and heats ink includes an ink tank and at least one heater to heat the ink tank. The ink tank is an integrated unit of subtanks storing ink disposed along the longitudinal direction. The at least one heater heats both longitudinal ends of the ink tank to a temperature higher than a temperature of a central area in the longitudinal direction of the ink tank.

Abstract: An inkjet printing apparatus which removes gas dissolved in ink by a degassing module provided on an ink supplying path which supplies ink from an ink tank to an inkjet head, includes a liquid feeding pump and a foreign substance removal filter. The liquid feeding pump feeds ink and is provided on the ink supplying path from the degassing module to the inkjet head. The foreign substance removal filter is provided on the ink supplying path from the degassing module to the liquid feeding pump.

Abstract: An inkjet printer, comprises a plurality of recording heads to jet ink onto a recording medium; an ink distributing device to distribute ink to the plurality of recording heads and having a damping action to the ink, the ink distributing device including, an ink chamber to store ink therein, an inlet section having an ink inlet port through which ink is fed from an outside into the ink chamber, and an outlet section having a plurality of ink outlet ports through which ink is discharged from the ink chamber; and a plurality of supplying pipes to distribute ink from the plurality of outlet ports to the plurality of recording heads.

Abstract: An inkjet printer, comprises a plurality of recording heads to jet ink onto a recording medium; an ink distributing device to distribute ink to the plurality of recording heads and having a damping action to the ink, the ink distributing device including, an ink chamber to store ink therein, an inlet section having an ink inlet port through which ink is fed from an outside into the ink chamber, and an outlet section having a plurality of ink outlet ports through which ink is discharged from the ink chamber; and a plurality of supplying pipes to distribute ink from the plurality of outlet ports to the plurality of recording heads.

Abstract: Login operation leads a user (e.g., employee) to an integrated portal platform 29, in which centralized management of IDs of the user for each specialized service site is carried out to realize a single sign-on scheme. Individual information of the who has accessed the system is located by looking up an individual information database in a transactions system 30, and utilizing the individual information, a list of available services is customized to suit the user. Accordingly, a front page that appears immediately after the login operation includes a customized screen with a customized menu. Subsequently, by specifying a preferred item of the menu, the user automatically logs into specialized service groups 31, and a service corresponding to the specified item of the menu is provided via the platform 29 to the user.