Printer capable of stable printing without pitch...

Details Printer capable of stable printing without pitch... Printer capable of stable printing without pitch...

2006-09-13

2009-10-27

Nguyen, Judy (Department: 2854)

Typewriting machines

Means auxiliary to typewriting function

Frame, casing, or support for typewriter

C400S693000

Reexamination Certificate

active

07607847

ABSTRACT:
In a printer including a base frame, an upper frame rotatably coupled to the base frame, and a platen and a platen pulley both rotatably supported by the upper frame, a subframe is attached to the upper frame rotatably and movably in one direction. A reduction gear and a belt pulley both are rotatably supported by the subframe. A drive gear is rotatably supported by the base frame and engaged with the reduction gear. A drive belt is stretched between the platen pulley and the belt pulley. A spring is attached between the upper frame and the subframe. The base frame has a guiding portion concentric with the drive gear. The subframe has a guided portion opposite the guiding portion. The spring applies tension to the drive belt and brings the guided portion into contact with the guiding portion.

REFERENCES:
patent: 6573925 (2003-06-01), Ohmura et al.
patent: 9-240083 (1997-09-01), None

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