Abstract: A liquid crystal display system of the present invention includes: an operation processing apparatus having a digital-analog converter converting a digital video signal to an analog video signal based on predetermined time information and a synchronization combining circuit superimposing the predetermined time information on at least one of a horizontal synchronizing signal and a vertical synchronizing signal; and a liquid crystal display apparatus converting the analog video signal to a digital video signal based on the predetermined time information, thereby displaying an image based on the converted digital video signal.

Abstract: A recording head for a printer is manufactured by printing a thick film of paste containing an electrode material such as tungsten on a ceramic substrate with hardness nearly equal to or less than that of tungsten and firing the substrate and the film simultaneously in a single process.

Abstract: According to the recording technology of this invention, the recording sheet on a recording paper has two layers: a resistive layer and a thermally fusible solid ink layer. A plurality of needle electrodes are in contact with the recording sheet and a means is provided to cause electric currents to flow between selected pairs of mutually adjacent electrodes such that the ink layer is thermally fused for recording.