Printer

Details Printer Printer

1990-07-13

1992-09-01

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400223, 400234, 400236, B41J 3316

Patent

active

051434610

ABSTRACT:
A thermal head of a printer is provided to contact a platen through an elongated print paper and an elongated ink ribbon. One end of the ink ribbon is wound and retained on a ribbon core, and the other end is taken up by a take up spool. The print paper and the ink ribbon can be fed back at the same speed by reversely rotating the platen. At the same time, rotation resistance to be applied from the take-up spool to the ink ribbon is removed by a resistance removing device. Further, the ribbon core is reversely rotated by a ribbon core reverse driving device to rewind the ink ribbon, thereby preventing slacking of the ink ribbon.

REFERENCES:
patent: 4577199 (1986-03-01), Saiki et al.
patent: 4675698 (1987-06-01), Tsutsumi
patent: 4812063 (1989-03-01), Kunimitsu et al.

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