Seiko Epson Corporation

Sumito Anzai

Norihiro Yamashita

Masato Mitsuhashi

Tomohiro Yuda

Hirotomo Tanaka

Tetsuji Takeishi

Takafumi Ogimura

Tomoyoshi Kakegawa

A liquid ejecting apparatus includes an ejecting unit capable of ejecting a liquid, a support unit configured to support a medium onto which the liquid is ejected and is movable in a movement direction between a set position where the medium is set and an ejecting start position where the ejecting unit starts ejecting the liquid, and a detector configured to detect whether an interference substance which is a substance that causes an interference with the ejecting unit is present on the support unit. The detector is movable between a first position and a second position, a distance between the second position and the ejecting unit being longer than a distance between the first position and the ejecting unit, in the movement direction.

Liquid ejecting apparatus and detecting method of interference substance

A printing device includes: a set unit on which a print medium can be set; a projection unit (projector) capable of projecting a first image onto the print medium set on the set unit; a printing unit capable of printing a second image on the print medium set on the set unit; and a control unit configured to modify a printing specification of the second image to be formed on the print medium based on modification information regarding a modification made to a projection specification of the first image projected onto the print medium by the projection unit.

Printing device and printing method

A recording apparatus includes a medium support unit that is capable of moving by driving of a motor in a moving direction and is capable of supporting a medium, a recording unit that records an image onto the medium supported on the medium support unit, and a control unit that allows the motor to execute an assist operation for assisting the movement of the medium support unit when recognizing the movement of the medium support unit without depending on the driving of the motor.

Recording apparatus and method for moving medium support unit

A liquid discharging apparatus includes a discharge unit capable of discharging a liquid to a discharge region, a medium movement unit capable of moving in movement directions while supporting a medium onto which the liquid is discharged, a base unit that constitutes a movement path along which the medium movement unit moves, a detected unit, and a detector unit capable of detecting a position of the medium movement unit by detecting the detected unit. The detected unit and the detector unit are disposed so that the detected unit is detected by the detector unit when the medium movement unit is at a protrusion position at which a one direction-side end portion of the medium movement unit which is at a one direction side in the movement directions protrudes more toward the one direction side than does a one direction-side end portion of the base unit.

Liquid discharging apparatus

A liquid discharging apparatus having a carriage that is capable of moving in a scanning direction and that has a discharging portion capable of discharging a liquid, a scale portion for confirming a position in the scanning direction of the carriage, and a cleaning portion that moves in the scanning direction of the carriage and is capable of cleaning the scale portion by contacting the scale portion. In such an apparatus, the cleaning portion is capable of displacement at a first state where contacting the scale portion and a second state where not contacting the scale portion.

Liquid discharging apparatus and method of cleaning scale portion

A medium supporting unit includes a supporting portion that supports a medium and a holding portion that holds the medium that is in a state of being supported by the supporting portion, and the holding portion includes a first portion that is a portion at one side of a straight line passing on a center of the holding portion in a plan view of the holding portion, and a second portion that is a portion at the another side of the straight line, a weight of the first portion being different from a weight of the second portion. This configuration of the medium supporting unit enables suppression of floating of the medium without impairing the ease of handling of the medium supporting unit.

Medium supporting unit, recording apparatus, and medium supporting method

To improve positioning accuracy in a direction of relative movement of dots which are formed by a fluid ejection device in which a plurality of nozzle groups contained in the direction of the relative movement of the head section contain a plurality of nozzles in the direction of the relative movement, an ejection timing is set for adjusting in a direction of the relative movement the positions of dots formed by each of nozzle groups. A distribution of adjustment pixels is set for adjusting in the direction of the relative movement the positions of dots formed by each of nozzles. A fluid is ejected in accordance with raster data generated on the basis of a distribution of the adjustment pixels set by an adjustment pixel setting unit, on the basis of ejection timing set by a nozzle group timing setting unit.

Dot formation positioning device, recording method, setting method, and recording program

The transport control section controls, at the time of cutting of the long sheet by the cutting unit, the motor for pinching such that a downstream portion in the transport direction, which is cut from the sheet, remains pinched by the first roller and the second roller at the point of time of completion of cutting, and controls, after the completion of cutting, the motor for discharge such that the downstream portion is discharged downstream in the transport direction by rotation of the respective rollers which pinch the downstream portion.

Transport device, recording apparatus, transport method

A printing apparatus includes a motor that drives an object to be driven; a detection unit that detects the speed of the object to be driven; and a control unit that controls driving of the motor based on a speed profile including an acceleration range, a constant-speed range, and a deceleration range, and determines that the speed of the object to be driven is abnormal when the difference between the detection speed of the detection unit and the speed of the speed profile exceeds a threshold value, wherein a first threshold value is set in the constant-speed range, and a second threshold value, which is higher than the first threshold value, is set in at least a portion of the acceleration range and the deceleration range.

Printing apparatus

A recording apparatus is provided including: a recording medium setting portion on which a plural recording media are set in a stacked state; a feed roller that feeds a recording medium set on the recording medium setting portion in a feeding direction; a recording medium return lever that returns a recording medium next or subsequent to a recording medium continuously fed out from the recording medium setting portion along with the recording medium to be fed; a control unit that controls the recording medium return lever; and a recording unit that performs recording on the recording medium, wherein the control unit controls the recording medium return lever so that the position is switched from a first position, a second position and to a third position.

Recording apparatus

The present invention is a motor control device comprising a control system, the control system being capable of controlling the motor by PWM and having integration means being capable of outputting an integrated value obtained by integrating a deviation between a rotation speed and a target rotation speed of a motor, the motor control device being capable of starting control with the control system for causing the motor to rotate at the target rotation speed after rotation of the motor has been started. In this motor control device, an output value of the integration means at a time when control with the control system is to be started is set to have a value that corresponds to a counter electromotive force generated in the motor by its rotation.

Motor controller

A unit heat value Q (&equals;I &middot;t ) per pass is calculated from a current value (an effective current value) I of a carriage motor with one pass of a carriage (one-way running in a reciprocation) and a moving time (a motor driving time) t of the carriage. Then, the unit heat value Q is successively calculated to obtain a heat value Q for a unit time T (&equals;one minute). The heat value Q is converted into a heat generation temperature &Dgr;T . The heat generation temperature &Dgr;T is successively added in consideration of a spontaneous radiation with the passage of time to obtain a current heat generation temperature &Dgr;T (&Dgr;T &equals;K&middot;&Dgr;T &plus;&Dgr;T ; K is a radiation factor). When &Dgr;T exceeds a threshold, a pause time for one pass of the carriage is provided.

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Shiojiri, Japan

Sumito Anzai