The printing apparatus includes a carriage having a print head mounted thereon, a carriage guide configured to guide movement of the carriage and to support the carriage, an optical scale member having an optical scale, an optical sensor mounting member having an optical sensor mounted thereon to read the optical scale, the optical sensor mounting member being fixed to a support surface of a support wall of the carriage, and a head portion of the fixing screw configured to be switched between a fixed state in which the optical sensor mounting member is fixed to the carriage and a release state in which the fixed state is released. The head of the fixing screw is located on a side opposite to the support surface with respect to the support wall when the optical sensor mounting member is in the fixed state.

A recording apparatus includes a carriage equipped with a recording head that ejects ink to a sheet, a drive unit configured to move the carriage in a width direction of the sheet, an encoder configured to detect first information regarding a position or a velocity of the carriage that moves by the drive unit, an acceleration sensor arranged on the carriage and configured to detect second information regarding acceleration of the carriage, and a control unit configured to stop the carriage, based on the first information and the second information.

A liquid discharge apparatus includes a body and a carriage disposed inside the body. A head is mounted on the carriage. The head discharges ink onto a recording medium and generates ink mist. An ink mist collector includes a fan that generates an air current that circulates in an air flow direction inside the body. A filter collects the ink mist generated by the head. At least one duct adjusts the air flow direction. An encoder is mounted on the carriage. The encoder is disposed downstream from the fan and disposed upstream from the head in the air flow direction.

A liquid discharge apparatus includes a head, processing circuitry, and a memory. The head includes a plurality of nozzle rows in each of which a plurality of nozzles are arranged. The processing circuitry detects landing positions of the liquid discharged from the plurality of nozzle rows and corrects the landing positions of the liquid based on a result of detecting the landing positions of the liquid. The memory stores data related to a relation among the landing positions of the liquid. The processing circuitry detects landing positions of the liquid discharged from one representative nozzle row. The processing circuitry corrects landing positions of the liquid discharged from all of the plurality of nozzle rows based on a result of detecting the landing positions of the liquid discharged from the one representative nozzle row and the data related to the relation among the landing positions stored in the memory.

An ejection apparatus includes an ejection head having an ejection port, a droplet detection unit, an acquisition unit, a control unit, and a decision unit. The droplet detection unit detects that a droplet ejected from the ejection port has reached a predetermined position. The acquisition unit acquires information regarding a velocity of movement of the detected droplet. The control unit controls the ejection head to eject the droplet from the ejection port. The decision unit decides a number of consecutive ejections of a plurality of droplets from the ejection head based on the acquired information regarding the velocities of each of the plurality of droplets ejected consecutively and detected by the droplet detection unit. If the acquisition unit acquires the information regarding velocities of detected droplets, the control unit controls the ejection head to consecutively eject the droplets from the ejection head based on the decided number of consecutive ejections.

In a control system, a controller is configured to determine presence or absence of an obstructed area within the intermediate section, and control movement of the moving body in accordance with a selected one of controlling methods including a first and a second control methods. The first control method causes the moving body to move at a first constant speed in the processing section defined within the intermediate section and at a second constant speed faster than the first constant speed in at least a part of a non-processing section within the intermediate section and other than the processing section, the first control method being selected when the obstructed area is absent. The second control method causes the moving body to move at the first constant speed in the processing section and the non-processing section, the second control method being selected when the obstructed area is present.

There is provided a liquid discharge apparatus including: a liquid discharge head, a carriage, a carriage moving mechanism, a carriage motor, an output unit outputting a discharge determination signal, and a controller configured to carry out a determination of whether or not a liquid is discharged normally from the nozzle, based on the discharge determination signal outputted from the output unit when the liquid discharge head carries out an inspection driving. If a first condition is satisfied, then after a carriage drive in order to move the carriage to a predetermined position, the inspection driving is performed. If a second condition other than the first condition is satisfied, then the inspection driving is performed without performing the carriage drive.

A printing apparatus includes a print unit configured to perform printing on the print medium held by a holding unit, the holding unit being capable of holding multiple types of print medium, a detecting unit capable of detecting the print medium and the holding unit, and a movement unit capable of relatively moving the detecting unit and the holding unit in a first direction and in a second direction intersecting the first direction. In addition, a control unit controls the detecting unit and the movement unit in a case where a first print medium is held by the holding unit, to obtain position information of the first print medium before the print unit performs printing and, in a case where a second print medium different from the first print medium is held by the holding unit, not to obtain position information of the second print medium.

In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first space by the partition member.

There is provided an ink-jet printer, including: a conveyor; a carriage; a recording head; a sensor; a cap; a cap shifter; a reference wall; a memory; a power supply; a command receiver; and a controller. The controller is configured to execute judging a state of the power supply section; changing a relative position of the recording head and the cap from the covering position to the separated position to take the cap off the recording head; switching the power supply from the sleep state to the drive state, changing a relative position of the recording head and the cap from the covering position to the separated position by taking the cap off the recording head, storing in the memory the position information, and recording an image on the sheet conveyed to the sheet facing area.