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.

The present invention relates to compositions containing stabilized and/or activated urease inhibitors, as well as methods of making and using the same.

An ink ejecting device includes: a head that ejects ink from a plurality of nozzles arranged along a Y-axis direction parallel to a direction in which a recording medium is conveyed; an X-axis moving mechanism that moves the head in an X-axis direction orthogonal to the Y-axis direction on the horizontal plane; a control unit that performs scanning in which the head is moved in the X-axis direction and that causes the head to eject ink during the scanning; and a Z-axis moving mechanism that moves the head in a Z-axis direction orthogonal to the Y-axis and X-axis directions.

A liquid ejecting apparatus RIM which ejects liquid onto a medium includes a carriage which includes a control substrate which configures at least a part of a control unit which controls driving of the entire liquid ejecting apparatus, a plurality of ejecting units which eject the liquid, a plurality of driving substrates which are connected to the control substrate, connected to the plurality of ejecting units in one-to-one correspondence, and drives the ejecting unit, an ejecting unit-driving substrate accommodating unit which accommodates the ejecting unit and the driving substrate, and a control substrate accommodating unit which accommodates the control substrate, in which the plurality of driving substrates are connected to the control substrate.

A liquid discharge apparatus includes a liquid discharge head to discharge liquid, a head holder to hold the liquid discharge head, a sub-carriage to hold the head holder, and a carriage to hold the sub-carriage and which is movable in a main scanning direction. The carriage includes a reference extending along the main scanning direction that holds and positions the sub-carriage in the carriage. The head holder includes a rotation reference around which the head holder is rotatable with respect to the sub-carriage, and an angle adjuster to regulate a rotation and adjust an angle of the rotation of the head holder with respect to the sub-carriage.

Mechanisms for adjusting the position of one or more print heads at an extremely fine resolution (e.g., less than 10 m) are described herein. The adjustment mechanisms include a differential screw and an indexing wheel through which the differential screw extends. One threaded segment of the differential screw is connected to a threaded feature of a flexible body that is coupled to the print head(s), while another threaded segment of the differential screw is connected to a threaded feature of a rigid body that is coupled to a printer assembly. As the indexing wheel and differential screw rotate, the space between the flexible body and the rigid body changes based on the difference between the pitches of the threaded segments. The adjustment mechanisms described herein utilize the accurate, consistent motion of the flexible body upon experiencing pressure to effect predictable changes in the position of the print head(s).

There are provided a liquid jetting apparatus and a method of coping with the floating of a medium that enable the originally required moving distance of a liquid jet head to be set in a case where the contact between the liquid jet head and a medium caused by the floating of the medium is to be avoided. The liquid jetting apparatus includes a first medium floating detection unit (140) that detects the floating of a medium, a first head raising/lowering unit (400) that moves a first liquid jet head, a first movement parameter setting unit (142) that sets a first movement parameter, a first head raising/lowering control unit (120) that controls the first head raising/lowering unit, a second head raising/lowering unit (400) that moves a second liquid jet head, a second movement parameter setting unit (142) that sets a second movement parameter separately from the first movement parameter, and a second head raising/lowering control unit (120) that controls the second head raising/lowering unit.

This disclosure is directed to securing, with a simple structure, a head to a position in a carriage without having to fasten screws so as to prevent possible loss of a desired printing quality. A carriage is provided that includes a main housing mounted to a printing unit body, an eccentric cam rotatably disposed in the main housing, a sub housing that holds a head that ejects ink droplets. The sub housing makes contact with a cam face of the eccentric cam and is movable upward and downward relative to the main housing in response to rotation of the eccentric cam. The carriage further includes a rotation regulator that regulates rotation of the sub housing around a rotating shaft of the eccentric cam.

An inkjet printer including an inkjet head, a head scanning unit, a wave shape generating mechanism to deform a recording medium into a predetermined wave shape, an obtaining device to obtain information concerning a type of the recording medium to be used in a printing operation, a gap information storing device to store gap information related to a gap between an ink discharging surface and the recording medium in association with a predetermined type of the recording medium, the gap information being acquired from a predetermined range in the recording medium, and a correcting device to correct the gap information according to the type of the recording medium obtained by the obtaining device when the type of the recording medium obtained by the obtaining device is different from the predetermined type of the recording medium stored in association with the gap information, is provided.

A carriage device includes a first guide member and a second guide member for supporting a carriage with a head mounted thereon at two separate positions and guiding reciprocation of the carriage, a first adjustment unit configured to adjust a height of the carriage relative to the first guide member through movement of the carriage, and a second adjustment unit configured to adjust a height of the carriage relative to the second guide member through the movement of the carriage. The carriage device can sequentially perform a first operation of changing the height of the carriage by the first adjustment unit and a second operation of changing the height of the carriage by the second adjustment unit.