Abstract: In a method for controlling printing elements of an ink print head, an idle time between the ejection of two dots from the same nozzle is determined. In the event that the idle time exceeds a predetermined threshold (?tS), a determined number of vibration cycles is performed (e.g. in immediate succession). The number of vibration cycles is determined based on the idle time, such that more vibration cycles are performed the longer that the idle time lasts between the ejections of two dots from the same nozzle.

Abstract: A flow path member includes a filter, a first space provided with an entrance through which a ink flows in, and a second space separated from the first space by the filter and that has an exit through which the ink flows out and a bottom surface facing the filter, in which the bottom surface includes an inclined surface spaced away from the filter from an end of the filter toward a center in a case where the filter is viewed in plan view, and the exit is in a middle of the inclined surface.

Abstract: A method of manufacturing a liquid ejecting method includes: a first step of injection molding passage members collectively constituting a passage for a liquid in the liquid ejecting head; a second step of moving the passage members to bring the passage members into contact with each other; and a third step of injecting a sealing material into a space between the passage members held in contact with each other, and filling the space with the sealing material. The sealing material is injected and filled, from a gate on a longitudinal side of the passage members, in a direction intersecting with a longitudinal direction of the passage members.

Abstract: A thermal head according to the present disclosure includes: a substrate; a first electrode; a heat generating section; a second electrode; a resin layer; and a protective layer. The first electrode is located on the substrate. The heat generating section is located on the substrate. The second electrode is located on the substrate so as to be electrically connected to the heat generating section and the first electrode. The resin layer is located on the first electrode. The protective layer is located on the resin layer. Moreover, the resin layer includes a first portion inserted in the first electrode.

Abstract: A tape includes: a sheet; first and second media; a first separating line located between first and second media of one pair and extending between first and second ends of the sheet in a widthwise direction; a first cutting portion formed through the first medium and extending from a first end of the first medium to a first endpoint; a second cutting portion formed through the second medium and extending from a first end of the second medium to a second endpoint; and second and third separating lines extending in a longitudinal direction between the first endpoint and a first-medium end portion and between the second endpoint and a second-medium end portion, respectively. A side of the first endpoint on which the first-medium end portion is located is identical in the longitudinal direction to a side of the second endpoint on which the second-medium end portion is located.

Abstract: In one example, a platen holder includes a surface to support a platen and a clamp to clamp the platen to the surface. The clamp includes a jaw and an actuator to open and close the jaw. The jaw and the actuator located below a plane of the surface and the jaw movable at the urging of the actuator between an open position in which the platen may be placed on or removed from the surface of the holder and a closed position to hold the platen against the surface.

Abstract: According to an embodiment, an ink jet head includes a pair of actuator plates, a return plate, and a flow passage plate. The pair of actuator plates are disposed to face each other in a Y-direction. In the actuator plate, a plurality of channels which extend in a Z-direction are arranged at a distance in an X-direction. The return plate is disposed on an opening end side of the channels in the pair of actuator plates. A circulation passage which communicates with the channels is formed in the return plate. The flow passage plate is disposed between the pair of actuator plates. An inlet flow passage into which an ink flows and an outlet flow passage which communicates with the circulation passage are arranged in the Z-direction.

Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.

Abstract: A motor control device includes a motor driver and a control unit. The motor driver supplies a drive current to a stepping motor. The control unit is configured to control the motor driver to start a supply of the drive current to the stepping motor in response to a start instruction, and increase the drive current to the stepping motor from zero to a predetermined current value stepwise over a predetermined time period.

Abstract: A printing apparatus includes first and second actuators for exerting force to liquid, the number of the second actuators being smaller than the number of the first actuators; a switching circuit; first, second and third power circuits for applying voltages to the first and second actuators; and a controller for controlling driving of the first and second actuators. The controller is configured to control the switching circuit to electrically connect the first power circuit and some of the first actuators, electrically connect the second power circuit to the other of the first actuators and electrically connect the third power circuit to the second actuators, based on the number of the first actuators and the number of the second actuators.

Abstract: An ink jet recording apparatus includes a recording head that ejects ink, an ink tank including an ink storage chamber and an air storage chamber. The ink storage chamber stores ink. The air storage chamber supplies air to the ink storage chamber along with supply of ink from the ink storage chamber to the recording head. An ink supply path communicates with the air storage chamber without passing the ink storage chamber. A valve switches between an open state in which the ink storage chamber communicates with the ink supply path and with the air storage chamber, and a close state in which the communication between the ink storage chamber and the ink supply path is blocked and the communication between the ink storage chamber and the air storage chamber is blocked.

Abstract: A piezoelectric device including a pressure chamber, a piezoelectric element, and a vibration plate, in which the piezoelectric element is provided with a first electrode, a second electrode, and a piezoelectric layer, the vibration plate has a first portion overlapping the piezoelectric element and a second portion having a thickness smaller than that of the first portion and overlapping an inner peripheral surface of a side wall of the pressure chamber, a side surface of the piezoelectric element which intersects the vibration plate has a first surface inclined at a first angle, the vibration plate has a second surface, between the first portion and the second portion, inclined at a second angle smaller than the first angle, and an end portion of the second surface on the side wall side of the pressure chamber overlaps the side wall of the pressure chamber.

Abstract: There are provided a liquid jet head and a liquid jet device capable of achieving reduction in size. There are included a first head chip and a second head chip stacked on one another in the Y direction, a first flow channel member disposed on the ?Y direction side of the first head chip, and having an inflow port communicated with an ink tank, and a first ink flow channel adapted to communicate the inflow port and the first head chip with each other, a second flow channel member disposed on the +Y direction of the second head chip, and having a second ink flow channel communicated with the second head chip, and a communication flow channel located between the first flow channel member and the second flow channel member, and adapted to communicate the first ink flow channel and the second ink flow channel with each other.

Abstract: A liquid discharging apparatus includes a head unit driven by a drive signal to discharge a liquid; a substrate; and a first transistor and a second transistor provided on the substrate and configured to generate the drive signal. In the substrate, a screw hole is provided between the first transistor and the second transistor.

Abstract: An image forming apparatus includes a collection system for collecting vapor co-solvents that are a byproduct of liquid ink. In addition, the collection system collects dew condensation from the moist air that is generated by lamps that dry the ink on a substrate. The collection system can be located in an exhaust passage. A condenser is installed in parallel and in front of an exhaust fan in the exhaust passage. The exhaust fan directs a flow of air through the exhaust passage. The collection system also includes a removable waste bottle for collecting the dew condensation and the condensed co-solvents. The exhaust passage bifurcates into an exhaust duct that is located after the exhaust fan and which discharges dry air and a collection channel that is located in front of the exhaust fan and which carries liquid drip off to the removable waste bottle.

Abstract: In order that the interior of a cap member, in a case where the cap member abuts to a cover member, is allowed to have improved airtightness so that the cap member can sufficiently function, a sealing member is used to seal between the cover member and first and second flow path members for retaining the cover member.

Abstract: A print head substrate includes: a substrate surface including a plurality of printing elements and a plurality of pads disposed along a first side and electrically connected to the printing elements, the substrate surface having an acute angle portion formed by the first side and a second side; and a test element group (TEG) area including a TEG not electrically connected to the printing elements, at least a part of the TEG area being located between the second side and a pad closest to a vertex of the acute angle portion among the pads.

Abstract: A liquid droplet jetting apparatus includes: a carriage configured to scan in a main scanning direction; a jetting head installed in the carriage, having nozzles arranged in a sub scanning direction intersecting with the main scanning direction, and configured to jet liquid droplets from the nozzles; a conveyer configured to convey the recording medium in the sub scanning direction; and a controller configured to control the carriage, the jetting head and the conveyer. The nozzles form nozzle groups including two nozzle groups adjacent in the sub scanning direction; and the controller is configured to execute a predetermined printing mode in which a pass printing and conveyance of the recording medium in the sub scanning direction are alternately performed. The pass printing causes the carriage to move one time in the main scanning direction while jetting the liquid droplets from the nozzles.

Abstract: An ink-jet recording apparatus is provided. The ink-jet recording apparatus includes: a plurality of rollers that convey a sheet in a conveyance direction; a platen; a recording unit; a plurality of first ribs provided in the platen; and a plurality of second ribs provided between the first ribs and the rollers in the conveyance direction. The plurality of rollers, the plurality of first ribs, and the plurality of second ribs are each disposed in a position where at least parts of them overlap in the width direction, and a length in the width direction of each of the supporting surfaces of the plurality of second ribs is longer than that in the width direction of each of the supporting surfaces of the plurality of first ribs, and is shorter than that in the width direction of an abutting surface on the sheet in each of the plurality of rollers.

Abstract: An inkjet print head includes an ejection module having a printing element substrate that ejects ink to a print medium and a flexible wiring substrate electrically connected to the printing element substrate; and a member for supporting the ejection module by joining, wherein the flexible wiring substrate has a capacitor, a periphery of the capacitor being covered with a sealing agent, and the capacitor is provided in a recess formed on the member.