Abstract: A printhead module for a modular pagewide inkjet printhead. The printhead module has only four rows of print chips configured for printing four different inks, each print chip having multiple nozzle rows for redundant monochrome printing of one respective ink. A print zone of the printhead module has a width of less than 100 mm across the four rows of print chips.

Abstract: There are provided an ink jet printing apparatus, a dummy jet method, and a program which can execute a dummy jet at a dummy jet execution timing in which a use status of a nozzle is taken into consideration. A non-jettable period and a required jetting amount of an ink jet head are set for each nozzle, and in a case where the dummy jet for a dummy jet execution nozzle is executed with a jetting amount insufficient for the required jetting amount, at a determination timing of determining the necessity of execution of the dummy jet, for the nozzle of which a total jetting amount in the non-jettable period is less than the required jetting amount, the dummy jet is not executed in a case where a period from a printing start to a next jetting timing is equal to or greater than a period obtained by adding a determination interval to a period from the printing start to the determination timing.

Abstract: A liquid ejecting head includes head chips configured to eject a liquid toward a medium in a first-direction, in which, when a width direction of the medium is a second-direction, a direction orthogonal to the first-direction and the second-direction is a third-direction, and a direction perpendicular to the first-direction and intersecting the second-direction and the third-direction is a fourth-direction, the head chips include a first-chip group in which first head-chips are arranged side by side in the second-direction, the first-head chip having a first-nozzle row formed by arranging first-nozzles side by side in the fourth-direction, and a second-chip group in which second-head chips are arranged side by side in the second-direction, the second-head chip having a second-nozzle row formed by arranging second-nozzles side by side in the fourth-direction, and the first-chip group is arranged side by side in the third-direction with respect to the second-chip group.

Abstract: There is provided a head bar unit including a head bar, an adjuster and a movement. The head bar includes a plurality of heads. The adjuster is supported by the head bar, and is configured to adjust positions in a vertical direction of the heads. The movement is configured to move the head bar and the adjuster in the vertical direction. The adjuster includes a motor, a rotator and a stopper. The rotator includes a plurality of contact portions. The rotator is configured to be rotated by the motor around a rotating shaft. The stopper is located at a position facing the rotator in the vertical direction, and is configured to position the rotator in the vertical direction, by making contact with one of the contact portions.

Abstract: In various examples, a fluid ejection device may include a fluid ejection die formed with a first material and that includes a bondpad and a plurality of fluid ejectors, and a cover layer adjacent the fluid ejection die. The cover may be formed with a second material that is different than the first material and may include a first region that overlays the bondpad and a second region that overlays the plurality of fluid ejectors. In various examples, the first and second regions are separated by a break in the cover layer. The break may be filled with a third material that is different than one or both of the first and second material.

Abstract: A wafer structure is disclosed and includes a chip substrate and plural inkjet chips having plural ink-drip generators. Each ink-drop generator includes a thermal-barrier layer, a resistance heating layer and a protective layer. The thermal-barrier layer is formed on the chip substrate, the resistance heating layer is formed on the thermal-barrier layer, a part of the protective layer is formed on the resistance heating layer, and the barrier layer is formed on the protective layer. The ink-supply chamber has a bottom in communication with the protective layer, and a top in communication with the nozzle. The thermal-barrier layer has a thickness of 500˜5000 angstroms, the protective layer has a thickness of 150˜3500 angstroms, the resistance heating layer has a thickness of 100˜500 angstroms, the resistance heating layer has a length of 5˜30 microns, and the resistance heating layer has a width of 5˜10 microns.

Abstract: A liquid discharge head includes an element substrate including a plurality of discharge ports configured to discharge liquid in a discharge direction onto a recording medium, and a heating element configured to heat the liquid, and a flow path member including a supply flow path configured to supply the liquid to the element substrate and a collection flow path configured to collect the liquid from the element substrate. The supply flow path and the collection flow path extend in a longitudinal direction of the flow path member and at least a part of the supply flow path and at least a part of the collection flow path overlap each other when being viewed in the direction parallel to the discharge direction.

Abstract: According to an embodiment, a liquid ejection head includes a plurality of drive flow paths, a plurality of dummy flow paths, and a plurality of side walls. The drive flow paths connect to liquid ejection nozzles. The dummy flow paths connect to dummy nozzles. The dummy flow paths are adjacent the drive flow paths. The side walls are between the drive flow paths and the dummy flow paths and configured to change volumes of both the drive flow paths and the dummy flow paths in response to drive signals. An acoustic resonance period of liquid in the dummy flow paths is shorter than an acoustic resonance period of the liquid in the drive flow paths.

Abstract: A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.

Abstract: Examples of an electronic device are described. In some examples, the electronic device includes a first shared line of a plurality of first contacts to respectively connect to a plurality of integrated circuits, a plurality of second lines of respective second contacts to respectively connect to the plurality of integrated circuits, and a third shared line of a plurality of third contacts to respectively connect to the plurality of integrated circuits. In some examples, the electronic device includes circuitry to determine whether one of the third contacts is connected to an integrated circuit based on a state of the first shared line and a state of one of the second lines that is associated with the one of the third contacts.

Abstract: A recording device includes a recording unit, a discharge roller unit, a medium receiving tray, a motor serving as a power source of the discharge roller, a power transmission unit that is configured to switch between a power transmission state in which power of the motor is transmitted from the motor to the medium receiving tray, and a power non-transmission state in which the power of the motor is not transmitted from the motor to the medium receiving tray, and a restriction unit that is configured to switch between a restriction state in which the restriction unit restricts displacement of the medium receiving tray when the power transmission unit is in the power non-transmission state, and a non-restriction state in which the restriction unit does not restrict the displacement of the medium receiving tray when the power transmission unit is in the power transmission state.

Abstract: A wafer structure is disclosed and includes a chip substrate and a plurality of inkjet chips. The chip substrate is a silicon substrate fabricated by a semiconductor process on a wafer of at least 12 inches. The inkjet chips include at least one first inkjet chip and at least one second inkjet chip directly formed on the chip substrate by the semiconductor process, respectively, and the plurality of inkjet chips are diced into the at least one first inkjet chip and the at least one second inkjet chip for inkjet printing. Each of the first inkjet chip and the second inkjet chip includes a plurality of ink-drop generators produced by a semiconductor process and formed on the chip substrate. Each of the ink-drop generators includes a thermal-barrier layer, a resistance heating layer, a conductive layer, a protective layer, a barrier layer, an ink-supply chamber and a nozzle.

Abstract: A printhead module includes: a monolithic substrate having alternate longitudinal slots and longitudinal ink supply channels defined through a thickness of the substrate and extending parallel with each other along a length of the substrate; and a plurality of rows of print chips mounted on a front face of the substrate, each row of print chips receiving ink only from a respective one of the ink supply channels. Each one of the longitudinal slots is configured to supply power and data only to a respective one of the rows of print chips.

Abstract: A liquid ejection head that can suppress variation in the circulation flow rate or the pressure of the liquid among a plurality of pressure chambers and suppress a difference in temperature distribution between adjacent element substrates to suppress image unevenness includes a plurality of ejection modules including an element substrate in which a plurality of ejection orifices that eject a liquid are aligned in an array. In one ejection module of the ejection modules adjacent to each other, the liquid is supplied from one side of an ejection orifice array, and the liquid is collected from the other side of the ejection orifice array, and in the other ejection module of the ejection modules adjacent to each other, the liquid is supplied from the other side, and the liquid is collected from the one side.

Abstract: An example method comprises identifying, by a processor, a gap in a housing of a printing apparatus and positioning an inlet of a conduit inside the housing proximate the gap. The inlet is fluidly connected to a fan, and the fan is powered to create a pressure differential across the housing to minimize the amount of air inside the housing being able to escape the housing via the gap.

Abstract: A transform wrapper is stored on a memory device and the memory device may be included in a printer cartridge. The transform wrapper may dynamically build a transform map for a printer based on metadata stored at the memory device. The metadata may indicate at least one of a type of depositing material, transform map, print media and printer.

Abstract: Aspects of the present disclosure are directed to forming a layer of material on a print head. As may be implemented in a manner consistent with examples herein, a layer of material from a transfer film is pressed against a surface of a print head, in which the surface defines fluid nozzle openings that extend from the surface into the print head. Portions of the material pressed onto the surface are therein adhered to the surface and caused to wrap over edges of the surface extending around the openings. The transfer film is removed along with a thickness of the material pressed into contact with the surface that remains adhered to the transfer film, as well as some or all of other regions of the material over the openings. The remaining layer of the material on the surface is thus formed with a uniform thickness.

Abstract: Disclosed is an industrial single-pass inkjet printer/press incorporating a line-scan camera. The line-scan camera enables system software to inspect every sheet for quality assurance purposes. These inspection results are tied back to a digital printer to take one or more of several possible actions. Actions include ensuring a particular number of acceptable prints are generated and sorted. Actions further include performing nozzle checks without pausing or interrupting production orders.

Abstract: An information processing apparatus includes: a state detection unit configured to detect states of the liquids contained in the plurality of liquid tanks; a light emission unit attached to an external surface of the information processing apparatus with a cover closed, the cover being opened when the plurality of tanks are operated; and a control unit configured to control the light emission unit, based on a fact that the state of the liquid detected by the state detection unit is a predetermined state in one of the plurality of liquid tanks, so that the light emission unit emits light in a light emission pattern corresponding to the liquid tank that contains the liquid in the predetermined state, out of a plurality of light emission patterns corresponding to the plurality of liquid tanks.

Abstract: An image recording apparatus includes a liquid chamber that stores liquid, a first electrode pin and a second electrode pin to be inserted into the liquid chamber, applying unit for applying voltage across the first electrode pin and the second electrode pin, with the first electrode pin as an anode side and the second electrode pin as a cathode side, and detecting unit for detecting electric current flowing, and detection operation of detecting amount of liquid in the liquid chamber by the detecting unit detecting the electric current when the applying unit applies voltage. Prior to the detection operation, an oxidization aging operation is performed, in which the applying unit applies voltage across the first electrode pin and the second electrode pin. An amount of an oxide layer formed on at least a portion of the first electrode pin exposed inside the liquid chamber is greater than the second.