Abstract: A liquid ejection head has a base plate with an actuator on an upper surface. Pressure chambers are formed in the actuator. A first common chamber connects to a first side of the pressure chambers, and a second common chamber connects to a second side. A nozzle plate is on an upper surface side of the actuator and has nozzles at positions corresponding to the pressure chambers. A supply hole is in the base plate and connected to the first common chamber. A discharge hole is in the base plate and connected to the second common chamber. A manifold is on a lower surface of the base plate. The manifold has a supply flow path for supplying liquid to the supply hole, a discharge flow path for receiving liquid from the discharge hole, and a temperature control flow path through which a temperature control liquid can flow.

Abstract: A liquid ejection head has a base plate with an actuator on an upper surface. Pressure chambers are formed in the actuator. A first common chamber connects to a first side of the pressure chambers, and a second common chamber connects to a second side. A nozzle plate is on an upper surface side of the actuator and has nozzles at positions corresponding to the pressure chambers. A supply hole is in the base plate and connected to the first common chamber. A discharge hole is in the base plate and connected to the second common chamber. A manifold is on a lower surface of the base plate. The manifold has a supply flow path for supplying liquid to the supply hole, a discharge flow path for receiving liquid from the discharge hole, and a temperature control flow path through which a temperature control liquid can flow.

Abstract: According to one embodiment, an ink jet head includes: a cover including an opening; a flexible cable extending from the opening toward an outside of the cover and having a rigidity lower than the cover; a protection member configured to have rigidity higher than the flexible cable, arranged between the flexible cable and the opening of the cover, and protruding toward an outside of the opening of the cover, while both end portions of an outer end edge of the opening are inclined or curved in a direction in which the flexible cable extends from the opening; and a sealing arranged in the opening in which the flexible cable and the protection member are arranged.

Abstract: A liquid discharge head includes a head, a liquid supply conduit, a liquid discharge conduit, a radiator, first and second wiring boards, and a heat conductive member. Liquid is supplied to the head for discharge through the liquid supply conduit. Liquid that passes through the head flows to the liquid discharge conduit. The radiator includes a flow path through which a coolant flows. The coolant is different from the liquid supplied to the head for discharge. The first wiring board is between the head and the radiator and has a connector connected to a wiring extending through an inner space of the radiator. The second wiring board is between the head main body and the first wiring board, and includes, thereon, a driving control element. The heat conductive member extends between the head and the radiator, and is in thermal contact with the radiator.

Abstract: According to one embodiment, an ink jet head includes: a cover including an opening; a flexible cable extending from the opening toward an outside of the cover and having a rigidity lower than the cover; a protection member configured to have rigidity higher than the flexible cable, arranged between the flexible cable and the opening of the cover, and protruding toward an outside of the opening of the cover, while both end portions of an outer end edge of the opening are inclined or curved in a direction in which the flexible cable extends from the opening; and a sealing arranged in the opening in which the flexible cable and the protection member are arranged.

Abstract: A liquid discharge head includes a head, a liquid supply conduit, a liquid discharge conduit, a radiator, first and second wiring boards, and a heat conductive member. Liquid is supplied to the head through the liquid supply conduit. Liquid that passed the head flows through the liquid discharge conduit. The radiator includes a flow path through which liquid from the liquid discharge conduit flows. The first wiring board is between the head and the radiator, and has a connector connected to a wiring extending through an interior of the radiator. The second wiring board is disposed between the head main body and the first wiring board, and includes, thereon, a driving control element configured to control liquid discharge from the discharge holes. The heat conductive member extends between the head and the radiator, and is in thermal contact with the radiator.

Abstract: A liquid discharge head includes a head, a liquid supply conduit, a liquid discharge conduit, a radiator, first and second wiring boards, and a heat conductive member. Liquid is supplied to the head for discharge through the liquid supply conduit. Liquid that passes through the head flows to the liquid discharge conduit. The radiator includes a flow path through which a coolant flows. The coolant is different from the liquid supplied to the head for discharge. The first wiring board is between the head and the radiator and has a connector connected to a wiring extending through an inner space of the radiator. The second wiring board is between the head main body and the first wiring board, and includes, thereon, a driving control element. The heat conductive member extends between the head and the radiator, and is in thermal contact with the radiator.

Abstract: A liquid jetting device includes a plurality of nozzles from which a liquid can be ejected, a plurality of pressure chambers, each being in fluid communication with an associated nozzle in the plurality of nozzles, actuators associated with each pressure chamber and configured to cause a pressure change in an associated pressure chamber in the plurality of pressure chambers, a heat-conductive chassis to which the plurality of nozzles, the plurality of pressure chambers, and the actuators are mounted, an integrated circuit held inside the chassis and configured to drive the actuators to eject liquid from the plurality of nozzles, a circuit board electrically connected to the integrated circuit and configured supply an electrical signal to integrated circuit, and a heat-conductive support to which the circuit board is mounted, the heat-conductive support held by the heat-conductive chassis to contact the integrated circuit and an inner surface of the heat-conductive chassis.

Abstract: A liquid jetting device includes a plurality of nozzles from which a liquid can be ejected, a plurality of pressure chambers, each being in fluid communication with an associated nozzle in the plurality of nozzles, actuators associated with each pressure chamber and configured to cause a pressure change in an associated pressure chamber in the plurality of pressure chambers, a heat-conductive chassis to which the plurality of nozzles, the plurality of pressure chambers, and the actuators are mounted, an integrated circuit held inside the chassis and configured to drive the actuators to eject liquid from the plurality of nozzles, a circuit board electrically connected to the integrated circuit and configured supply an electrical signal to integrated circuit, and a heat-conductive support to which the circuit board is mounted, the heat-conductive support held by the heat-conductive chassis to contact the integrated circuit and an inner surface of the heat-conductive chassis.

Abstract: An ink jet head includes an ejection unit including first nozzles arranged along a line, second nozzles arranged parallel to the first nozzles, a first actuator configured to cause ink to be ejected from the first nozzles, and a second actuator configured to cause ink to be ejected from the second nozzles, a first drive circuit configured to drive the first actuator, a second drive circuit configured to drive the second actuator, and a casing. The casing has a first space on a first side of the casing and a second space on a second side of the casing that is opposite to the first side. The first drive circuit is housed in the first space and the second drive circuit is housed in the second space.

Abstract: An ink jet head includes a head body, a plurality of pipes, a plurality of flexible substrates, a reference plate, a plate base, a plurality of in-covers, and a plurality of side covers. Each of the in-covers includes an inner surface having a first mating surface in contact with the plate base, and an outer surface having a second mating surface in contact with the driving circuits. Each of the side covers includes an inner surface that is thermally coupled to a respective one of the plurality of in-covers and has a third mating surface in contact with the second mating surface section of the respective one of the plurality of in-covers, and an outer surface fastened to the print wiring substrate.

Abstract: An ink jet head includes an ejection unit including first nozzles arranged along a line, second nozzles arranged parallel to the first nozzles, a first actuator configured to cause ink to be ejected from the first nozzles, and a second actuator configured to cause ink to be ejected from the second nozzles, a first drive circuit configured to drive the first actuator, a second drive circuit configured to drive the second actuator, and a casing. The casing has a first space on a first side of the casing and a second space on a second side of the casing that is opposite to the first side. The first drive circuit is housed in the first space and the second drive circuit is housed in the second space.

Abstract: An ink jet head includes an ejection unit including first nozzles arranged along a line, second nozzles arranged parallel to the first nozzles, a first actuator configured to cause ink to be ejected from the first nozzles, and a second actuator configured to cause ink to be ejected from the second nozzles, a first drive circuit configured to drive the first actuator, a second drive circuit configured to drive the second actuator, and a casing. The casing has a first space on a first side of the casing and a second space on a second side of the casing that is opposite to the first side. The first drive circuit is housed in the first space and the second drive circuit is housed in the second space.

Abstract: An ink jet head includes a head body, a plurality of pipes, a plurality of flexible substrates, a reference plate, a plate base, a plurality of in-covers, and a plurality of side covers. Each of the in-covers includes an inner surface having a first mating surface in contact with the plate base, and an outer surface having a second mating surface in contact with the driving circuits. Each of the side covers includes an inner surface that is thermally coupled to a respective one of the plurality of in-covers and has a third mating surface in contact with the second mating surface section of the respective one of the plurality of in-covers, and an outer surface fastened to the print wiring substrate.

Abstract: An ink jet head includes an ejection unit including first nozzles arranged along a line, second nozzles arranged parallel to the first nozzles, a first actuator configured to cause ink to be ejected from the first nozzles, and a second actuator configured to cause ink to be ejected from the second nozzles, a first drive circuit configured to drive the first actuator, a second drive circuit configured to drive the second actuator, and a casing. The casing has a first space on a first side of the casing and a second space on a second side of the casing that is opposite to the first side. The first drive circuit is housed in the first space and the second drive circuit is housed in the second space.

Abstract: An ink jet head includes a head body having a plurality of ejection ports disposed in a nozzle disposition direction and a fluid chamber for ink, a base portion having an ink supply channel and an ink discharge channel communicating with the fluid chamber, a drive circuit configured to drive the head body for ejection, a heat sink configured to radiate heat generated by the drive circuit, a reference plate having both end portions thereof in a plate length direction configured to be fixed to a structure member on a printer body, and a plate holder that has a thermal conductivity lower than a thermal conductivity of the reference plate, positions the head body to cause the nozzle disposition direction thereof to be parallel to a main scanning direction with respect to the reference plate, and couples the heat sink and the base portion to each other.

Abstract: An ink jet head includes a head body having a plurality of ejection ports disposed in a nozzle disposition direction and a fluid chamber for ink, a base portion having an ink supply channel and an ink discharge channel communicating with the fluid chamber, a drive circuit configured to drive the head body for ejection, a heat sink configured to radiate heat generated by the drive circuit, a reference plate having both end portions thereof in a plate length direction configured to be fixed to a structure member on a printer body, and a plate holder that has a thermal conductivity lower than a thermal conductivity of the reference plate, positions the head body to cause the nozzle disposition direction thereof to be parallel to a main scanning direction with respect to the reference plate, and couples the heat sink and the base portion to each other.

Abstract: According to one embodiment, a sheet processing device includes a jogger fence configured to carry out a crosswise direction alignment to a stack of image formed sheets ejected from an image forming apparatus, a rear end fence acting as a lengthwise reference edge, a stapling device configured to staple the aligned sheet stack, a discharge belt configured to move the stapled sheet stack to a sheet ejection tray, and a controller to control movement of the jogger fence during the sheet stack being moved by the discharge belt so as to move the jogger fence more than once between a position where the jogger fence does not contact the edge of the sheet stack and a position where the jogger fence pressing contact the edge of the sheet stack.

Abstract: According to one embodiment, a sheet processing device includes a jogger fence configured to carry out a crosswise direction alignment to a stack of image formed sheets ejected from an image forming apparatus, a rear end fence acting as a lengthwise reference edge, a stapling device configured to staple the aligned sheet stack, a discharge belt configured to move the stapled sheet stack to a sheet ejection tray, and a controller to control movement of the jogger fence during the sheet stack being moved by the discharge belt so as to move the jogger fence more than once between a position where the jogger fence does not contact the edge of the sheet stack and a position where the jogger fence pressing contact the edge of the sheet stack.

Abstract: According to one embodiment, a sheet finishing apparatus includes: a saddle stapling unit configured to staple a center of a sheet bundle; a saddle folding unit configured to fold the center of the sheet bundle stapled by the saddle stapling unit; a cover configured to cover the fold which is formed by the saddle folding unit so as to be in contact with the fold; and a fold reinforcing roller configured to move along the fold while applying pressure to the fold via the cover. A large number of protrusions, tips of which project to the fold, are formed on facing surfaces of the cover that are in contact with the fold.