公开(公告)号：EP0765759B1

公开(公告)日：2003-07-09

申请号：EP96115607.2

申请日：1996-09-28

申请人： Toshiba Tec Kabushiki Kaisha

发明人： Iga, Kaname ,  Kitahara, Satoshi ,  Ishii, Hiroyasu ,  Fushimi, Kazuhiro ,  Ichikawa, Takashi ,  Mihara, Hidemi A201, Corpo-Ikenoue

IPC分类号： B41J2/325 ,  B41J2/32 ,  B41J25/304 ,  B41J19/78 ,  B65C9/42

CPC分类号： B41J2/325 ,  B41J2/35

公开(公告)号：EP3792068A1

公开(公告)日：2021-03-17

申请号：EP20180733.6

申请日：2020-06-18

申请人： Toshiba TEC Kabushiki Kaisha

发明人： Kitahara, Satoshi

IPC分类号： B41J17/36 ,  B41J2/325 ,  B41J33/16 ,  B41J35/36

摘要： A printer includes a thermal print head (111), a supply shaft (120), a winding shaft (130), a light emitting device (141) , and a photodetector (142). The light emitting device and the photodetector are aligned along a line parallel to a line passing through rotational axes (O1, O2) of the supply and winding shafts at a predetermined distance. The predetermined distance is greater than a radius of the supply shaft and a radius of the winding shaft. The predetermined distance is less than a radial distance from the rotational axis of the supply shaft to an outer surface of the ink ribbon on the supply shaft and a radial distance from the rotational axis of the winding shaft to an outer surface of the ink ribbon on the winding shaft when a length of the ribbon on the supply shaft is equal to a length of the ribbon on the winding shaft.