A printer includes a supporting table to support a recording medium, a recording head located above the supporting table to eject ink toward the supporting table, a first contact detector located above the supporting table and lower than the recording head, an oscillator to vibrate the first contact detector, and a vibration detector to detect vibration of the first contact detector and transmit a signal corresponding to the detected vibration. The printer stores a threshold related to the vibration of the first contact detector and determines that an object has come into contact with the first contact detector when an amount of the vibration detected by the vibration detector is equal to the threshold or less.

A liquid ejecting apparatus includes: an apparatus main body; a plurality of liquid ejecting heads that have a nozzle-formed surface; a unit base to which the plurality of liquid ejecting heads are fixed; and a lifting-lowering mechanism that is fixed to the apparatus main body and causes a position of the nozzle-formed surface to be shifted with respect to the apparatus main body. The lifting-lowering mechanisms are disposed in a direction orthogonal to a direction in which the plurality of liquid ejecting heads are aligned, in an in-plane direction of the nozzle-formed surface.

A printer includes a printhead, a platen, a carriage, a carriage moving mechanism configured to move the carriage between an opposing position at which the printhead faces the platen and a standby position at which the printhead does not face the platen, a head moving mechanism configured to move the printhead between a first head position and a second head position when the carriage is at the opposing position, and a sensor. A first gap between the printhead and the platen when the printhead is at the first head position is smaller than a second gap between the printhead and the platen when the printhead is at the second head position. The sensor is configured to detect whether the carriage is at the opposing position and the printhead is at the second head position, or not.

In a print head support assembly for carrying a number of print heads and for positioning the number of print heads, the print head support assembly includes a carriage plate provided with reference elements for positioning the number of print heads, the carriage plate being further provided with at least four support positions and a support sub-assembly provided with at least four adjustable mounting points for coupling to said at least four support positions and for supporting the carriage plate at said at least four support positions. The support sub-assembly is configured to constrain the carriage plate in six degrees of freedom with respect to a position of the carriage plate and to constrain the carriage plate in at least one degree of freedom with respect to a shape of the carriage plate. Thus, a light-weight and compliant carriage plate may be used to provide for a light-weight carriage suitable for high-speed printing.

The invention relates to a method for digitally printing a profiled strip (1) having a plurality of digital print heads (2) which are aligned with respect to contour portions (4, 5, 6) of the profiled strip (1) and are moved in this aligned reference position (a, b, c, d) relative to the profiled strip (1) along the longitudinal strips of the profiled strip determined by the contour portions (4, 5, 6) at a predetermined distance, wherein the nozzles of the print heads (2) are controlled with respect to the ink delivery as a function of a print template. In order to ensure advantageous method conditions, it is proposed that individual contour portions (4, 5, 6) are assigned reference planes (7) by an evaluation program on the basis of data reproducing the contour (3) of the profiled strip (1) in the printing area, in that the print heads (2) are aligned with respect to these reference planes (7), and in that the nozzles of the aligned print heads (2) are controlled with respect to the ink delivery with a correction value which takes into account the deviation of the respective contour portion (4, 5, 6) from the reference plane (7).

There is provided a printing apparatus which includes the following: A printhead including a plurality of nozzles that discharge ink to a print medium. A first detection unit that detects a distance between the printhead and a platen. An adjustment unit that adjusts the distance between the printhead and the platen. An acquisition unit that acquires difference information concerning a difference of a distance between the platen and each of the nozzle on an upstream side and the nozzle on a downstream side in a conveyance direction of the print medium. The adjustment unit adjusts the distance based on a detection result of the first detection unit and the difference information acquired by the acquisition unit.

A droplet deposition head including a datum surface arrangement for alignment of the head relative to an external mounting component in either a vertical mounting mode in which the head is held against a vertical mounting plate or a horizontal mounting mode where the head is held against a horizontal mounting plate. The datum surface arrangement comprising at least seven datum surfaces (x1; y1, y2, y3; z1, z2, z3) provided on the head, wherein five of the seven datum surfaces are provided for alignment in both vertical and horizontal mounting modes, and wherein a sixth datum surface (z3) is provided for alignment exclusively in said horizontal mounting mode and a seventh datum surface (y3) is provided for alignment exclusively in said vertical mounting mode.

A liquid discharge apparatus includes a liquid discharge portion having a liquid discharge port and a liquid discharge unit. The liquid discharge portion performs a liquid discharge to discharge a liquid in a liquid discharge direction. The liquid discharge unit holds the liquid discharge portion and is movable along the liquid discharge direction. The liquid discharge apparatus further includes a first driver to move the liquid discharge unit along the liquid discharge direction, a second driver to move the liquid discharge portion relative to the liquid discharge unit along the liquid discharge direction, an abnormality detector to detect an abnormality of the liquid discharge unit, and circuitry. The circuitry increases an excitation current of the first driver in response to an abnormality detection signal from the abnormality detector or an instruction to clean the liquid discharge portion, and drives the second driver after increasing the excitation current.

Provided herein is a printer comprising a printing assembly. The printing assembly comprises a printhead bracket fixedly attached to the printer, a printhead that defines a groove, the printhead aligned at a first alignment, an alignment adjuster fastened between the printhead bracket and the printhead, and a plurality of fasteners operatively engaged with the alignment adjuster. The alignment adjuster comprises a gear rack that is adjacent to the printhead bracket, and a protrusion that is received by the groove of the printhead. The plurality of fasteners comprises at least one selected from a group of a lateral adjustment fastener operatively engaged with the gear rack, and a rotational adjustment fastener operatively engaged with a transverse edge of the printhead. The lateral adjustment fastener is configured to provide lateral movement to the alignment adjuster and the printhead. The rotational adjustment fastener is configured to provide rotational movement to the printhead.

An example printing apparatus is illustrated. The printing apparatus includes a print engine assembly. The print engine assembly further includes a bottom chassis portion. The print engine assembly also includes a top chassis portion. The print engine assembly also includes a print head positioned within the top chassis portion. The print engine assembly also includes a plurality of offset pins coupled to the print head, where the plurality of offset pins abuts the bottom chassis portion, and where the plurality of offset pins enables the print head to be positioned at a predetermined distance from the bottom chassis portion.