Carriage driver having a distortion prohibiting mechanism

Details Carriage driver having a distortion prohibiting mechanism Carriage driver having a distortion prohibiting mechanism

1997-06-24

1998-08-25

Hilten, John S.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400328, 347 37, B41J 1920

Patent

active

057976910

ABSTRACT:
A carriage driver includes a cam shaft having a shaft, a cylinder provided around the shaft and made of material of which thermal expansion coefficient is different from that of the shaft, and a cam groove provided on the cylinder, a carriage motor which rotatively drives the cam shaft, a carriage having a print head and movably mounted on the cam shaft, and a prohibiting mechanism provided at boundaries between the shaft and the cylinder of the cam shaft and simultaneously at ends of printing area, in order to prohibit distortion of the cam shaft in an axial direction due to change in temperature.

REFERENCES:
patent: 4544293 (1985-10-01), Cranston et al.
patent: 4856919 (1989-08-01), Takeuchi et al.
patent: 5349731 (1994-09-01), Sheehan
patent: 5402156 (1995-03-01), Donahue et al.

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