Print head and roller biasing mechanism for a hand held thermal

Details Print head and roller biasing mechanism for a hand held thermal Print head and roller biasing mechanism for a hand held thermal

1989-07-12

1991-10-01

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400 88, 400193, B41J 2325

Patent

active

050528327

ABSTRACT:
A hand held printer for printing on a print paper when the printer is manually moved over the surface of the paper is provided, including a print mechanism supported within the housing to print inputted characters and drawings on the print paper upon manual manipulation of the housing. A thermal head is movably supported within the housing. A movement measurement unit indicates movement of the printer. A drive roller drives a ribbon take up roller and movement measurement unit. A clutch allows the drive roller to function only in a printing direction. A spring biases the drive roller towards an operating position, the drive roller moving to the print surface independently of the thermal head when the drive roller is biased by the spring.

REFERENCES:
patent: 3767020 (1973-10-01), Rowe
patent: 4750049 (1988-06-01), Murakami et al.
patent: 4819083 (1989-04-01), Kawai et al.

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