A device includes a first column of contact pads. The device also includes a column of fluid actuation devices disposed longitudinally to the first column of contact pads.

A liquid discharge head substrate, comprising a discharging element configured to discharge a liquid, a driver configured to drive the discharging element, a conductive protection film covering the discharging element via an insulating film, and a controller connected to the protection film and configured to output a control signal that sets the driver in an inactive state when a change of a voltage of the protection film or a change in a current that flows to the protection film is detected.

The invention discloses a combined jet printing method comprising preparing at least two inkjet devices, wherein the devices move in a separate manner and implement printing actions separately; preparing at least two mediums to be subject to printing, wherein the number of the mediums is not less than that of the devices; implementing the printing to a medium by the first device; implementing the second printing to the medium which is completely subject to the first printing of the first device by the second device; implementing the N.sup.th printing to the medium which is completely subject to the N−1.sup.th printing by the N−1.sup.th device by the N.sup.th device; and finishing the printing after all devices complete all printing actions. The intermittent printing of underpainting and pattern can be realized without needing a screen printing machine, an inkjet printing machine and other equipment, thus reducing cost.

One example provides a printhead including a plurality of printhead dies, each printhead die including at least one crack sense resistor. At least one analog bus is connected to each printhead die, the at least one analog bus to output voltages to facilitate a printer controller to determine whether at least one of the printhead dies is cracked.

Disclosed is an image forming apparatus which includes: a feeding portion configured to feed a sheet; an image forming portion configured to form an image on the sheet; a conveying portion configured to stop the sheet fed by the feeding portion at a predetermined position and to convey the sheet to the image forming portion in accordance with a timing of forming the image by the image forming portion; a type discriminating portion configured to discriminate whether a type of the sheet to be fed belongs to a first sheet type group including plain paper or to a second sheet type group including coated paper; and a controlling portion configured to control feeding of the sheet, wherein the controlling portion is configured to change a sheet feeding start timing of the feeding portion in accordance with the type discriminated by the type discriminating portion.

A printing system facilitates the printing of articles of manufacture. The system includes an array of printheads, a support member positioned to be parallel to a plane formed by the array of printheads, a member movably mounted to the support member, an actuator operatively connected to the movably mounted member, an object holder configured to mount to the movably mounted member, and a controller operatively connected to the plurality of printheads and the actuator. The controller is configured to operate the actuator to move the object holder past the array of printheads and to operate the plurality of printheads to eject marking material onto objects held by the object holder as the object holder passes the array of printheads. The support member and printhead array are oriented vertically to enable the printing system to be installed in a vertical cabinet that provides a small footprint in a non-production environment.

A liquid ejecting apparatus includes: a liquid ejecting head including an ejecting surface configured to eject a liquid; a tank that reserves the liquid to be supplied to the liquid ejecting head; a circulating mechanism that executes a circulating operation to circulate the liquid between the liquid ejecting head and the tank; and a control unit that controls the circulating mechanism. The control unit executes a recording operation by the liquid ejecting head in a first posture in which the ejecting surface crosses a horizontal plane and executes the circulating operation in a second posture in which an angle made by the ejecting surface and the horizontal plane is smaller than the angle in the first posture.

A printing apparatus includes a platen that supports a recording medium, a printing head that reciprocates along the platen, and discharges a droplet onto the recording medium supported by the platen at least in a forward route or a backward route of the reciprocation, to perform printing, and an air blowing unit disposed on at least one of two sides of the platen in a reciprocation direction, that is a direction in which the printing head moves along with the reciprocation, and blows an airflow to a nozzle surface of the printing head that reciprocates.

An inkjet recording apparatus includes a conveyance portion, a recording head, a detection portion, and a control portion. The recording head is disposed opposite the conveyance portion, and includes a plurality of nozzles which eject ink to the recording medium conveyed by the conveyance portion. The detection portion detects the thickness of the recording medium. The control portion controls the ink ejection speed from the recording head based on the thickness of the recording medium detected by the detection portion.

A device includes a first column of contact pads. The device also includes a column of fluid actuation devices disposed longitudinally to the first column of contact pads.