Abstract: A thermal head in a thermal transfer printer in which a tension is given to an ink ribbon that has warped as being heated by the thermal head to reduce friction force generated between the thermal head and the ink ribbon. A ribbon transport direction changing member 30 pushes the ink ribbon 13 away from a heat generator 21, as a transport direction of the ink ribbon 13 is slightly moved toward a platen roller 10, so a constant tension is given to a film layer 24 of the ink ribbon immediately after being heated.

Abstract: A printing device capable of detecting an error type, that is, at which step in a printing process an error has occurred and capable of performing a simplified procedure for identifying the cause of the error. The printing device includes a reader/writer for writing information into an RFID tag and for detecting errors at a plurality of steps in a procedure for writing the information into the RFID tag and a ROM for storing each of the error patterns at respective steps at which errors have been detected by the reader/writer. When an error is detected by the reader/writer, a control unit reads, from the ROM, one of the error patterns corresponding to a step at which the error has been detected and prints the detected error on an RFID label.

Abstract: A linerless label roll-up preventing device for a thermal printer that prevents roll-up of the linerless label 3 on the platen roller 13. A roll-up preventing plate 23 is applied to a slit (22) formed in the outer surface of the platen roller (13), and protrudes to form a roll-up preventing edge (29) at a portion of the roll-up prevention plate (23). A roll-up preventing plate 23 being fixed to a slit (22), formed in the radial surface of the platen roller (13), relatively to the platen roller (13), and formed with a roll-up preventing projection edge, at a portion of the roll-up preventing plate (23), projecting out slightly from the outer circumferential surface of the platen roller (13) and capable of contacting the back surface of the linerless label (3).

Abstract: A thermal printer in which a thermal head can be attached easily to a print unit without requiring a tool such as a screw driver. The thermal printer has a printing unit (40) having a left ribbon frame (43) and a right ribbon frame (42) facing each other. A head housing (60) is attached between the frames (42, 43) while supporting a thermal head (12). A supporting-recess in the surface of the left ribbon frame (43) faces the right ribbon frame (42) and supporting the left side face (64) of the head housing (60). A frame cover (70) is fitted on and removed from a fitting portion provided on the outer surface of the right ribbon frame which is at the back side of the surface facing the left ribbon frame (43) and the cover supporting a right side face (62) of the head housing (60) through a through-hole (50a) formed on the right ribbon frame (42).

Abstract: A thermal printer allows ink ribbon replacement without interference of a hook positioned in the opened state particularly in an ink ribbon replacement operation. A thermal printer includes a head lock lever 40 which includes a hook 41 at the tip of the lever. The hook is mounted such that it can be moved in the longitudinal direction relative to a turn shaft 26 during turning of the turn shaft 26, allowing the distance between the turn shaft 26 and the hook 41 to be changed. A movement control moves the head lock lever 40 such that the distance between the turn shaft 26 and the hook 41 in the opened state in which the thermal head 12 is separated from the platen roller 11 is smaller than that in the pressed state in which the thermal head 12 is pressed into contact with the platen roller 11.

Abstract: The object of the present disclosure is to provide a label application device which can easily perform label applying operation by protruding a portion of the label towards an article in a mountain-shape and automatically applying the label.

Abstract: A magnetic coupler arrangement that includes two quarter wave length strip patches, an input signal source, a signal splitter that splits an input signal from the input signal source into two signals and phase-shifts one of the two signals, wherein the phase-shifted signal and the non-phase-shifted signal are fed into the patches of the coupler to achieve a balanced signal configuration.