Control method, processing device, and non-transitory recording medium

A processing device comprising:

• a conveyance roller configured to convey a medium holding member;
• a driver that drives the conveyance roller;
• and
• a processing portion that processes a processing target medium placed on the medium holding member, wherein
• a protrusion biting into the medium holding member is formed on a contact surface of the conveyance roller with the medium holding member, and
• the processing device further comprises one or more processors that:
• control the driver such that the conveyance roller conveys the medium holding member in a first conveyance direction and the medium holding member is sequentially conveyed in a second conveyance direction opposite to the first conveyance direction in a state where the processing portion is separated from the processing target medium, and
• control the driver and the processing portion based on processing data after controlling the driver such that the processing portion processes the processing target medium while causing the conveyance roller to convey the medium holding member together with the processing target medium.

A computer-readable non-transitory recording medium recording a program causing a computer to perform:

• a process of processing a processing target medium placed on a medium holding member, a protrusion that bites into the medium holding member being formed on a contact surface of a conveyance roller with the medium holding member;
• a process of controlling a driver such that the conveyance roller conveys the medium holding member in a first conveyance direction and the medium holding member is sequentially conveyed in a second conveyance direction opposite to the first conveyance direction in a state where the processing portion is separated from the processing target medium;
• and
• a process of controlling the driver and the processing portion based on processing data after controlling the driver such that the processing portion processes the processing target medium while causing the conveyance roller to convey the medium holding member together with the processing target medium.