Abstract: A musical instrument includes: a fixed member; a movable member displaceable relative to the fixed member within a movable range in response to a playing operation of the musical instrument; a detectable circuit including a magnetic or conductive body and disposed on the movable member; a detector circuit including a coil disposed on the fixed member and configured to output a detection signal corresponding to a voltage that is dependent on a distance between the detectable circuit and the coil; at least one memory storing instructions; and at least one processor configured to implement the instructions to perform a plurality of tasks, including: a generating task that generates, based on correspondences between voltages of detection signals and positions of the movable member in the movable range, position data indicating a position of the movable member that depends on the voltage of the detection signal output from the detector circuit; and a calibrating task that calibrates the correspondences based on th

Abstract: An inkjet printing apparatus for forming images with ink droplets includes the following elements: an inkjet head, a plurality of holders for removably holding a plurality of ink tanks storing inks interchangeable with each other, branch pipes each having one end thereof connected to one of the ink tanks, a mixer provided at the other ends of the branch pipes, a pump for feeding the inks to the mixer, a feed pipe connecting the mixer and the inkjet head, and a controller for controlling ink feeding. The controller makes different a feed rate of the ink from each of the ink tanks.

Abstract: An inkjet printing apparatus for forming images with ink droplets includes the following elements: an inkjet head, a plurality of holders for removably holding a plurality of ink tanks storing inks interchangeable with each other, branch pipes each having one end thereof connected to one of the ink tanks, a mixer provided at the other ends of the branch pipes, a pump for feeding the inks to the mixer, a feed pipe connecting the mixer and the inkjet head, and a controller for controlling ink feeding. The controller makes different a feed rate of the ink from each of the ink tanks.

Abstract: Disclosed is an inspecting chart including a reference pattern containing a first line segment group and a second line segment group, a first-side deviation pattern, and a second-side deviation pattern. The first line segment group is formed by a plurality of first line segments printed by a reference printing head at a first given interval. The second line segment is formed by second line segments printed by a printing head on a center between two adjacent first line segments or a center of each of the first line segments, the printing head being spaced away from the reference printing head in the transportation direction of a print medium. The first-side deviation pattern and the second-side deviation pattern are printed with various deviations.

Abstract: Disclosed is an inspecting chart including a reference pattern containing a first line segment group and a second line segment group, a first-side deviation pattern, and a second-side deviation pattern. The first line segment group is formed by a plurality of first line segments printed by a reference printing head at a first given interval. The second line segment is formed by second line segments printed by a printing head on a center between two adjacent first line segments or a center of each of the first line segments, the printing head being spaced away from the reference printing head in the transportation direction of a print medium. The first-side deviation pattern and the second-side deviation pattern are printed with various deviations.

Abstract: Disclosed is an inspecting chart including a reference pattern containing a first line segment group and a second line segment group, a first-side deviation pattern, and a second-side deviation pattern. The first line segment group is formed by a plurality of first line segments printed by a reference printing head at a first given interval. The second line segment is formed by second line segments printed by a printing head on a center between two adjacent first line segments or a center of each of the first line segments, the printing head being spaced away from the reference printing head in a the transportation direction of a print medium. The first-side deviation pattern and the second-side deviation pattern are printed with various deviations.

Abstract: Disclosed is an inspecting chart including a reference pattern containing a first line segment group and a second line segment group, a first-side deviation pattern, and a second-side deviation pattern. The first line segment group is formed by a plurality of first line segments printed by a reference printing head at a first given interval. The second line segment is formed by second line segments printed by a printing head on a center between two adjacent first line segments or a center of each of the first line segments, the printing head being spaced away from the reference printing head in a the transportation direction of a print medium. The first-side deviation pattern and the second-side deviation pattern are printed with various deviations.

Abstract: In a scanning optical system provided with a plurality of scanning optical devices, each scanning optical device including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed, the plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates; and the scanning optical system is further provide with a plurality of link members to connect two neighboring base plates independently of other base plates.

Abstract: In a scanning optical system provided with a plurality of scanning optical devices, each scanning optical device including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed, the plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates; and the scanning optical system is further provide with a plurality of link members to connect two neighboring base plates independently of other base plates.

Abstract: In a scanning optical system provided with a plurality of scanning optical devices, each scanning optical device including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed, the plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates; and the scanning optical system is further provide with a plurality of link members to connect two neighboring base plates independently of other base plates.

Abstract: In a scanning optical system provided with a plurality of scanning optical devices, each scanning optical device including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed, the plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates; and the scanning optical system is further provide with a plurality of link members to connect two neighboring base plates independently of other base plates.

Abstract: A scanning optical system is provided with a plurality of scanning optical devices each including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed. The plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates, and the scanning optical system is further provided with a plurality of link members to connect two neighboring base plates independently of other base plates.

Abstract: In a scanning optical system provided with a plurality of scanning optical devices, each scanning optical device including a light source to emit a light beam, a collimator lens into which the light beam emitted from the light source enters, a deflector to deflect the light beam passing through the collimator lens in a main scanning direction, an image forming lens to focus the light beam coming from the deflector onto a scanned surface, and a base plate on which the light source, the collimator lens, the deflector and the image forming lens are fixed, the plurality of scanning optical devices are piled up in a sub-scanning direction perpendicular to the main scanning direction in such a manner that each base plate is substantially parallel to other base plates; and the scanning optical system is further provide with a plurality of link members to connect two neighboring base plates independently of other base plates.