Printing apparatus with a thermal print head

Details Printing apparatus with a thermal print head Printing apparatus with a thermal print head

1984-12-14

1987-01-27

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Thermal

4006133, 279216, 346 76PH, 226 45, B41J 320, H05B 300, G01D 1510

Patent

active

046391525

ABSTRACT:
A printing apparatus for printing on a sheet of paper via a thermal ribbon comprising: a paper feeding device for feeding the sheet of paper; a thermal print head including heat generating elements which are held in pressed contact with the surface of the sheet of paper via the thermal ribbon, the heat generating elements being selectively energized to apply heat to an ink layer of the thermal ribbon to fuse the ink for adherence of the fused ink to the surface of the paper; a detecting device for sensing the smoothness of the surface of the sheet of paper fed by the paper feeding device; a print-quality improving device for improving the quality of printing on the sheet of paper; and a control device for activating the print-quality improving device while the sensed smoothness is lower than a preset lower limit, the control device deactivating the print-quality improving device while the sensed smoothness is not lower than the preset lower limit.

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IBM Tech Disc. Bulletin, "Tape Tension Detection", Dang et al., vol. 26, No. 6, Nov. 1983, pp. 2990-2991.

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