Abstract: A production management system includes a sewing machine and a production management device. The sewing machine records chronological operation data. The production management device communicates with the sewing machine, and acquires and stores the operation data. The sewing machine includes a time acquisition unit that acquires a time at the time of the communication from a clock of the production management device at the time of the communication with the production management device and grants time information based on the time at the time of the communication to the operation data recorded at the time of the communication.

Abstract: A production management system includes a sewing machine and a production management device. The sewing machine records chronological operation data. The production management device communicates with the sewing machine, and acquires and stores the operation data. The sewing machine includes a time acquisition unit that acquires a time at the time of the communication from a clock of the production management device at the time of the communication with the production management device and grants time information based on the time at the time of the communication to the operation data recorded at the time of the communication.

Abstract: A recording material having a resin layer containing a polyester resin as a main component on a support, the recording material is disclosed in having (A) a groove or grooves placed continuously or intermittently extending linearly with a depth not less than 45% but not more than 90% of the thickness of the recording material, or (B) linearly continuous holes wherein width of the holes is not less than 15·m and not more than 130·m, length of the holes is not less than 50·m and not more than 500·m, and interval between the holes is not less than 30·m and not more than 300·m. In use of this recording material, printed items in a desired size can be formed rapidly and easily.