Abstract: A thermal head includes an insulating head substrate, one or a plurality of driver ICs, a plurality of heat generating elements that is arranged on the head substrate in a main scanning direction, a plurality of individual electrodes that is provided on the head substrate at one ends of the respective heat generating elements and connects the respective heat generating elements to the driver ICs, and a common electrode that is provided on the head substrate at the other ends of the respective heat generating elements so as to be common to the heat generating elements. Capacitance adjustment portions, which adjust capacitance difference between the respective individual electrodes so that the capacitance difference is reduced, are formed at a wiring pattern of the individual electrodes.

Abstract: A thermal head includes an insulating head substrate, one or a plurality of driver ICs, a plurality of heat generating elements that is arranged on the head substrate in a main scanning direction, a plurality of individual electrodes that is provided on the head substrate at one ends of the respective heat generating elements and connects the respective heat generating elements to the driver ICs, and a common electrode that is provided on the head substrate at the other ends of the respective heat generating elements so as to be common to the heat generating elements. Capacitance adjustment portions, which adjust capacitance difference between the respective individual electrodes so that the capacitance difference is reduced, are formed at a wiring pattern of the individual electrodes.

Abstract: A ribbon cassette structure integrated with a paper feed tray includes a ribbon cassette that includes a pair of bobbin receiving units and is integrated with a paper feed tray. One of the pair of bobbin receiving units that are connected to each other, and the paper feed tray are pivotally connected to each other so as to be opened or closed between an open state where the one of the pair of bobbin receiving units and the paper feed tray are mostly separated from each other, and a closed state where the one of the pair of bobbin receiving units and the paper feed tray come in contact with each other.

Abstract: A printer capable of printing high-quality recording is provided. A driving force transmission gear mounted on a platen roller, driven rollers mounted on a pair of conveying rollers, respectively, and intermediate gears that always mesh with both the driving force transmission gear, and the driven rollers form a re-transmission mechanism that re-transmits the driving force transmitted to the platen roller from a driving motor to each of the one pair of conveying rollers. Also, gear supporting shafts that rotatably support intermediate gears are configured so as to be adjustable in position.

Abstract: A printer capable of printing high-quality recording is provided. A driving force transmission gear mounted on a platen roller, driven rollers mounted on a pair of conveying rollers, respectively, and intermediate gears that always mesh with both the driving force transmission gear, and the driven rollers form a re-transmission mechanism that re-transmits the driving force transmitted to the platen roller from a driving motor to each of the one pair of conveying rollers. Also, gear supporting shafts that rotatably support intermediate gears are configured so as to be adjustable in position.

Abstract: A thermal transfer recording medium comprising a support, and at least a heat-meltable release layer and a colored ink layer capable of being softened with heat stacked in this order on the support, the release layer comprising a wax as a main ingredient, and the release layer having a melting point of not less than 85° C., a heat of fusion of not more than 140 mJ/mg, and a melt viscosity of not more than 50 cps/120° C.

Abstract: A thermal transfer recording medium for forming a color image by superimposingly transferring plural different color inks, comprising a foundation and a color ink layer provided on the foundation, and a release layer comprising a wax interposed between the foundation and the color ink layer, wherein the thickness d1 of the release layer for a first color and the thickness d2 of the release layer for a second color satisfy the relationship represented by formula (I): d1<d2<2.0 d1.

Abstract: The object of the present invention is to provide a thermal head wherein a satisfactory image free of unevenness in printing density can be acquired by suitably correcting voltage drop in the common electrode of the thermal head and heating an individual heater element at uniform temperature. The thermal head according to the invention is characterized in that a common electrode comprised of a conductive layer and a base electrode layer is formed on most of the surface of a heat insulating layer, a separate electrode and a heater element are provided on the common electrode via a layer insulating layer and the edge of the base electrode layer is suitably overlapped with the conductive layer. Also, the thermal head according to the invention is characterized in that the conductive layer is divided every heater element and suitable electric resistance is applied to divided each conductive layer.

Abstract: A print head drive system of the type wherein there is provided a one-shot generating circuit for generating one-shot pulses in response to an instruction given from a processor and the energization of a head is effected in response to the one-shot pulse supplied from the one-shot generating circuit, characterized in that there is included a mechanical trouble detector for detecting occurrence of trouble, the pulse duration of one-shot pulse generated in the one-shot generating circuit is made shorter than the time interval during which the energization of the head is effected in the normal operating time, and the processor issues during the normal operating time the instruction plural times to the one-shot generating circuit, whereby when abnormal operation is detected by the mechanical trouble detector, generation of one-shot pulse is inhibited, so that the time interval of energization of the head is shortened.