Abstract: A printer includes a support plane to support a medium, a restrictor to hold, together with the support plane, an end in a second direction of the medium supported by the support plane, a cutter to cut the medium supported by the support plane, and a controller configured or programmed to include a cutout formation controller configured or programmed to perform control such that a plurality of cutouts extending in the second direction are formed in the medium. An end margin is provided in a portion of the medium between the end of the medium and the cutout closest to the end of the medium. Where a region of the medium overlapping the restrictor is an overlapping region, a length in the second direction of the end margin is longer than a length in the second direction from an end of the medium to an innermost position of the overlapping region of the medium.

Abstract: A printer includes a head that is movable in a scanning direction and configured to eject a liquid onto a medium, a platen extending in the scanning direction to receive the medium placed at a position facing the head, a support extending in the scanning direction to support the platen, a restraint to restrain the platen with respect to the support while allowing sliding of the platen with respect to the support, and a slider interposed between the platen and the support and located at a different position from the restraint.

Abstract: A replacement assembly is attachable/detachable to/from a liquid ejection apparatus including a head that is configured to eject a liquid. The replacement assembly includes a sheet to wipe a nozzle surface of the head, a supply roller configured to supply the sheet, a winding roller configured to wind the sheet, and a holding portion that holds the supply roller and the winding roller.

Abstract: A processing device includes a support table to support a sheet medium, a sheet cutter to cut the medium supported on the support table, a cutter holder to move the sheet cutter in a toward-away direction in which the sheet cutter moves toward and away from the support table, and a cutter transporter to move the cutter holder in a cutting direction that is orthogonal to a transport direction of the medium. The cutter holder includes a holder movable in the toward-away direction and that holds the sheet cutter, an actuator including a rod that extends or retracts, a link connected to the rod and the holder, and a rotation shaft that rotatably supports the link so that the holder moves in the toward-away direction in response to extension or retraction of the rod.

Abstract: A printing device includes a roll holder to support a recording medium roll so as to be rotatable in a front-rear direction, a support table that is higher than the roll holder and supports the recording medium drawn from the medium roll, a print head, a conveyor to transfer the recording medium forward on the support table to draw the recording medium from the medium roll and transfer the recording medium rearward on the support table to pull back the recording medium toward the roll holder, and a receiver that is lower than and spaced away from a transfer path of the recording medium extending from the medium roll to the support table along which the recording medium is drawn from the medium roll and transferred. The receiver is capable of receiving the pulled-back recording medium, and includes a receiving portion that slopes downward while extending forward or rearward.

Abstract: A printer includes a rolled medium holder to hold a rolled medium that is a band-shaped medium wound into a cylindrical form, and a supporting table to support the medium pulled out rearward from the rolled medium holder. The rolled medium holder includes a rotation shaft extending in a right-left direction and inserted into or through the rolled medium, and a flange provided on at least one end portion of the rotation shaft. A central axis of the rotation shaft is rearward of a front end of the supporting table. A front end of the flange is forward of the front end of the supporting table.

Abstract: A printer includes a roll paper holder to hold a roll paper, and a support holder to support the roll paper holder such that the roll paper holder is detachable and rotatable. The roll paper holder includes a rotation shaft, a first flange secured to the rotation shaft, a second flange provided on the rotation shaft, and a positioning flange provided on the rotation shaft and located at a predetermined position to the right of the first flange. The support holder includes a position determiner including an insertion hole housing a portion of the positioning flange in a state where the roll paper holder is rotatably supported and also including a restriction wall partitioning the insertion hole and restricting the positioning flange from moving in a main scanning direction.

Abstract: According to one embodiment, a learning method includes calculating a probability distribution indicating a distribution of a probability density or a distribution of a probability at which actions are selected, selecting a first action based on the probability distribution, causing a control target to execute the first action, receiving a reward and next observation data, calculating a probability density or a probability of the first action, correcting the reward, and updating the control parameter. The reward is corrected such that the reward increases as the probability density or probability decreases.

Abstract: A processing device includes a support table to support a sheet medium, a sheet cutter to cut the medium supported on the support table, a cutter holder to move the sheet cutter in a toward-away direction in which the sheet cutter moves toward and away from the support table, and a cutter transporter to move the cutter holder in a cutting direction that is orthogonal to a transport direction of the medium. The cutter holder includes a holder movable in the toward-away direction and that holds the sheet cutter, an actuator including a rod that extends or retracts, a link connected to the rod and the holder, and a rotation shaft that rotatably supports the link so that the holder moves in the toward-away direction in response to extension or retraction of the rod.

Abstract: A printer includes a dryer to send an airflow toward a recording medium. The dryer includes a first fan, a second fan, a heater, a first intake port, a first exhaust port with an opening facing toward a platen, a second intake port with an opening facing toward a guide, and a second exhaust port with an opening facing toward the guide. The first fan is operable to draw air through the first intake port, and discharge air toward the platen through the first exhaust port. The second fan is operable to draw air through the second intake port, and discharge air that has been heated by the heater through the second exhaust port.

Abstract: A printer includes a driving roller to move a medium supported on a support table in a predetermined transportation direction, and pinch roller assemblies each including a pinch roller, a support to support the pinch roller to allow the pinch roller to contact, or to be spaced from, the driving roller, and an actuator provided upstream in the transportation direction with respect to the pinch roller. The actuator includes a contact portion contactable with the support, and an operation portion to press the contact portion to the support to move the pinch roller in a direction away from the driving roller.

Abstract: A medium transportation device includes a support table to support a medium, and a conveyor to transport the medium supported by the support table in a transportation direction. The conveyor includes a driving roller, a rail, and a pinch roller assembly. The driving roller is provided on the support table, extends in a perpendicular direction that is perpendicular to the transportation direction, and is rotatable in the transportation direction. The rail faces the support table and extends in the perpendicular direction. The pinch roller assembly is in engagement with the rail so as to be movable in the perpendicular direction along the rail. The rail includes shorter rails arranged along a line extending in the perpendicular direction.

Abstract: According to one embodiment, a learning method, comprises receiving a first signal including a previous auxiliary variable value, previous action information regarding a previous action, or a set of previous scores, receiving current sensor data, selecting a current action of the control target based on the first signal, the current sensor data, and a parameter for obtaining a score from sensor data, causing the control target to execute the current action, receiving next sensor data and a reward, and updating the parameter based on the current sensor data, current action information regarding the current action, the next sensor data, and the reward. A degree of selecting a previous action as the current action is increased.

Abstract: A printer includes a driving roller to move a medium supported on a support table in a predetermined transportation direction, and pinch roller assemblies each including a pinch roller, a support to support the pinch roller to allow the pinch roller to contact, or to be spaced from, the driving roller, and an actuator provided upstream in the transportation direction with respect to the pinch roller. The actuator includes a contact portion contactable with the support, and an operation portion to press the contact portion to the support to move the pinch roller in a direction away from the driving roller.

Abstract: A medium transportation device includes a support table to support a medium, and a conveyor to transport the medium supported by the support table in a transportation direction. The conveyor includes a driving roller, a rail, and a pinch roller assembly. The driving roller is provided on the support table, extends in a perpendicular direction that is perpendicular to the transportation direction, and is rotatable in the transportation direction. The rail faces the support table and extends in the perpendicular direction. The pinch roller assembly is in engagement with the rail so as to be movable in the perpendicular direction along the rail. The rail includes shorter rails arranged along a line extending in the perpendicular direction.

Abstract: According to one embodiment, a robot motion planning device includes processing circuitry. The processing circuitry receives observation information obtained by observing at least part of a movable range of a robot. The processing circuitry determines, in a case where first observation information is received, a target position to which the robot is to make a motion, using an action-value function and the first observation information. The processing circuitry receives measurement information obtained by measuring a state of the robot, calculates a difference corresponding to the first observation information, using the measurement information, and determines a motion plan of a force-controlled motion of the robot, based on the target position and the difference.

Abstract: A clamp includes first and second rising portions that rise from a base portion, a first extending portion extending along a first top surface of a table from the first rising portion, a second extending portion extending along a second top surface of the table from the second rising portion, a first clamp portion to urge a medium toward the first top surface, and a second clamp portion to urge the medium toward the second top surface. A gap located above a groove in the table is provided between the first clamp portion and the second clamp portion.

Abstract: According to one embodiment, a learning method, comprises receiving a first signal including a previous auxiliary variable value, previous action information regarding a previous action, or a set of previous scores, receiving current sensor data, selecting a current action of the control target based on the first signal, the current sensor data, and a parameter for obtaining a score from sensor data, causing the control target to execute the current action, receiving next sensor data and a reward, and updating the parameter based on the current sensor data, current action information regarding the current action, the next sensor data, and the reward. A degree of selecting a previous action as the current action is increased.

Abstract: According to one embodiment, a robot motion planning device includes processing circuitry. The processing circuitry receives observation information obtained by observing at least part of a movable range of a robot. The processing circuitry determines, in a case where first observation information is received, a target position to which the robot is to make a motion, using an action-value function and the first observation information. The processing circuitry receives measurement information obtained by measuring a state of the robot, calculates a difference corresponding to the first observation information, using the measurement information, and determines a motion plan of a force-controlled motion of the robot, based on the target position and the difference.

Abstract: A clamp includes first and second rising portions that rise from a base portion, a first extending portion extending along a first top surface of a table from the first rising portion, a second extending portion extending along a second top surface of the table from the second rising portion, a first clamp portion to urge a medium toward the first top surface, and a second clamp portion to urge the medium toward the second top surface. A gap located above a groove in the table is provided between the first clamp portion and the second clamp portion.