Media processing device, control method for a media processing device, and recording medium

A control method for a media processing device including

• a conveyance path that conveys a recording medium,
• on one side of the conveyance path
• a first recording head that records on one side of the recording medium,
• a first carriage that carries the first recording head,
• a first conveyance unit that moves the first carriage on a first carriage shaft,
• a first scale having a plurality of first slits of a specific width formed with a specific interval therebetween, and at one end thereof a second slit of a different width than the first slit, and
• a first detection unit that is carried on the first carriage and detects the first slits and the second slit of the first scale, and
• on the other side of the conveyance path
• a second recording head that records on the other side of the recording medium,
• a second carriage that carries the second recording head,
• a second conveyance unit that moves the second carriage on a second carriage shaft,
• a second scale having a plurality of third slits of a specific width formed with a specific interval therebetween, and at one end thereof a fourth slit of a different width than the third slit, and
• a second detection unit that is carried on the second carriage and detects the third slits and the fourth slit of the second scale,
• wherein the first scale and the second scale are disposed so that the end of the first scale to which the second slit is disposed, and the end of the second scale to which the fourth slit is disposed, are at the same end on opposite sides of the conveyance path,
• the control method comprising steps of:
• moving the first carriage a first specific distance away from the one end of the first scale, reversing and moving the first carriage at least until the first detection unit detects the second slit, and setting the first carriage home position based on the position where the second slit was detected, by the first conveyance unit;
• and
• moving the second carriage a second specific distance away from the one end of the second scale, reversing and moving the second carriage at least until the second detection unit detects the fourth slit, and setting the second carriage home position based on the position where the fourth slit was detected, by the second conveyance unit.

A storage medium storing a program executed by a control unit that controls parts of a media processing device including

• a conveyance path that conveys a recording medium,
• on one side of the conveyance path
• a first recording head that records on one side of the recording medium,
• a first carriage that carries the first recording head,
• a first conveyance unit that moves the first carriage on a first carriage shaft,
• a first scale having a plurality of first slits of a specific width formed with a specific interval therebetween, and at one end thereof a second slit of a different width than the first slit, and
• a first detection unit that is carried on the first carriage and detects the first slits and the second slit of the first scale, and
• on the other side of the conveyance path
• a second recording head that records on the other side of the recording medium,
• a second carriage that carries the second recording head,
• a second conveyance unit that moves the second carriage on a second carriage shaft,
• a second scale having a plurality of third slits of a specific width formed with a specific interval therebetween, and at one end thereof a fourth slit of a different width than the third slit, and
• a second detection unit that is carried on the second carriage and detects the third slits and the fourth slit of the second scale,
• wherein the first scale and the second scale are disposed so that the end of the first scale to which the second slit is disposed, and the end of the second scale to which the fourth slit is disposed, are at the same end on opposite sides of the conveyance path,
• the program comprising steps of:
• moving the first carriage a first specific distance away from the one end of the first scale, reversing and moving the first carriage at least until the first detection unit detects the second slit, and setting the first carriage home position based on the position where the second slit was detected, by the first conveyance unit;
• and
• moving the second carriage a second specific distance away from the one end of the second scale, reversing and moving the second carriage at least until the second detection unit detects the fourth slit, and setting the second carriage home position based on the position where the fourth slit was detected, by the second conveyance unit.