A head pressurizing mechanism in which in a state in which a first tape cartridge is mounted, a first contact pin is positioned at a first switching position in which the first contact pin comes in contact with a pressure receiving portion provided on a side of a thermal head opposite a platen roller, and in a state in which the second tape cartridge is mounted, by pushing the pressurizing position switching portion in a mounting direction with the second tape cartridge, a second contact pin is positioned at a second switching position in which the second contact pin comes in contact with the pressure receiving portion at, with respect to the first switching position, a portion in a direction opposite the mounting direction.

A head pressurizing mechanism in which in a state in which a first tape cartridge is mounted, a first contact pin is positioned at a first switching position in which the first contact pin comes in contact with a pressure receiving portion provided on a side of a thermal head opposite a platen roller, and in a state in which the second tape cartridge is mounted, by pushing the pressurizing position switching portion in a mounting direction with the second tape cartridge, a second contact pin is positioned at a second switching position in which the second contact pin comes in contact with the pressure receiving portion at, with respect to the first switching position, a portion in a direction opposite the mounting direction.

A printing apparatus includes a head configured to project a plurality of pins to perform printing on a printing medium, a carriage mounted with a head and configured to move, a roller mounted on the carriage and capable of coming into contact with the printing medium, a platen provided in a position opposed to the head and capable of moving in each of a direction in which the platen approaches the head and a direction in which the platen moves away from the head, and a pressing mechanism configured to press the platen toward the head. The pressing mechanism includes an elastic section configured to press the platen toward the head with an elastic force and a moving section configured to move the elastic section in each of a direction in which the elastic force of the elastic section increases and a direction in which the elastic force of the elastic section decreases.

The present invention provides a pressure adjusting structure for printing head. A first pressure plate is disposed on a circuit board. Two elastic members are disposed on the first pressure plate. One end of the two elastic members provides downward force, respectively; the other end thereof is against a second pressure plate, respectively. An adjusting member passes through the second pressure plate. One end of the adjusting member is projective to the second pressure plate such that a user can adjust the downward pressure of the first pressure plate. By ensuring the pressure value within the optimum pressure range, the superior printing quality can be achieved.

The present invention provides a pressure adjusting structure for printing head. A first pressure plate is disposed on a circuit board. Two elastic members are disposed on the first pressure plate. One end of the two elastic members provides downward force, respectively; the other end thereof is against a second pressure plate, respectively. An adjusting member passes through the second pressure plate. One end of the adjusting member is projective to the second pressure plate such that a user can adjust the downward pressure of the first pressure plate. By ensuring the pressure value within the optimum pressure range, the superior printing quality can be achieved.

Thermal transfer printer for selectively transferring a meltable ink material carried on a tape to a substrate intended to receive ink from said tape for printing an image on the substrate, the printer comprising a supply spool for the tape, a take-up spool for the tape, and a printhead between the supply spool and the take-up spool, wherein the supply spool is driven by a supply motor and the take-up spool is driven by a take-up motor, and that the printer comprises a spool drive controller which is configured to energize the supply motor and the take-up motor so as to arrange that the tape is un-wound from the supply spool and wound onto the take-up spool, wherein the spool drive controller is embodied with field oriented control driving the supply motor and the take-up motor so as to continuously and uninterruptedly control motor torque of said motor's.

Thermal transfer printer for selectively transferring a meltable ink material carried on a tape to a substrate intended to receive ink from said tape for printing an image on the substrate, the printer comprising a supply spool for the tape, a take-up spool for the tape, and a printhead between the supply spool and the take-up spool, wherein the supply spool is driven by a supply motor and the take-up spool is driven by a take-up motor, and that the printer comprises a spool drive controller which is configured to energize the supply motor and the take-up motor so as to arrange that the tape is un-wound from the supply spool and wound onto the take-up spool, wherein the spool drive controller is embodied with field oriented control driving the supply motor and the take-up motor so as to continuously and uninterruptedly control motor torque of said motor's.

A thermal printer includes a frame including sidewalls; a platen roller supported by the frame, through bearings, the platen roller being configured to rotate with a rotational shaft; a thermal head disposed opposite the platen roller; a support member for supporting the thermal head, the support member being configured to be pivoted with respect to the frame; and an adjustment mechanism disposed between the rotational shaft of the platen roller and the thermal head, the adjustment mechanism allowing a distance between the rotational shaft of the platen roller and the thermal head to be adjusted, while contacting at least one from among components of the platen roller and components of the thermal head, so that a gap between the thermal head and the platen roller is adjusted.

A thermal printer includes a frame including sidewalls; a platen roller supported by the frame, through bearings, the platen roller being configured to rotate with a rotational shaft; a thermal head disposed opposite the platen roller; a support member for supporting the thermal head, the support member being configured to be pivoted with respect to the frame; and an adjustment mechanism disposed between the rotational shaft of the platen roller and the thermal head, the adjustment mechanism allowing a distance between the rotational shaft of the platen roller and the thermal head to be adjusted, while contacting at least one from among components of the platen roller and components of the thermal head, so that a gap between the thermal head and the platen roller is adjusted.

A thermal printer comprises a base part, a holding member, a printing device and a platen roller. When an uneven pressing force is applied to the printing device by the recording paper sheet, the printing device is capable of swinging about the support pin serving as a fulcrum in order to even out the pressing force. The deformable mechanism is capable of being plastically deformed to keep the position of the printing device. An elastic element is disposed between the holding member and the base part, and due to the elastic element, both the printing device and the platen roller are in close contact with the recording paper sheet when the recording paper sheet is clamped between the printing device and the platen roller. The printing force of the printing device acting on the printing paper sheet can be distributed more even to achieve clearer printing.