Abstract: A thermal head includes a thermal resistance member formed in a straight form, a first lead conductor group having a plurality of first lead conductors which are connected to the thermal resistance member, a second lead conductor group having a plurality of second lead conductors which are connected to the thermal resistance member, the first lead conductors and the second lead conductors being alternately arranged at a given interval, a third lead conductor group connected to the thermal resistance member between the first and second lead conductor groups, and a switch having a first selecting mode for selecting the first lead conductor group and a second selecting mode for selecting the second lead conductor group, wherein when the switch selects the first selecting mode, a region of the thermal resistance member sandwiched by the first lead conductor group and the third lead conductor group is heated, and when the switch selects the second selecting mode, a region of the thermal resistance member sandwiche

Abstract: A heat-sensitive type mimeographic screen forming apparatus includes: a long thermal head which covers a screen fabric spread on a screen fabric frame in its entirety; and a platen which is brought into contact with the thermal head through the screen fabric. Depending on the width of a screen fabric frame to be used, the platen is replaced with another suitable one, or changed in width.

Abstract: A cordless digitizer includes a tablet including position detecting elements formed of loop coils, error compensating elements formed of loop coils, and an auxiliary element formed of a coil which is arranged around a reading range of the tablet; and a position indicator including a position indicating element; and an error compensating unit which, when the position indicator is set at a position on the tablet, obtains first outputs according to interactions between the position detecting elements and the auxiliary element of the tablet and the position indicating element of the position indicator, and second outputs according to interactions between the error compensating elements, the auxiliary element of the tablet and the position indicating element of the position indicator to produce third outputs according to the first and second outputs from which error output components due to direct actions between the elements of the tablet have been eliminated; a position detecting loop coil assembly provided on t