Ink-jet printer and star roller used therein

Details Ink-jet printer and star roller used therein Ink-jet printer and star roller used therein

2006-08-08

2006-08-08

Hirshfeld, Andrew H. (Department: 2854)

Incremental printing of symbolic information

Ink jet

Medium and processing means

C271S109000, C492S033000, C492S040000

Reexamination Certificate

active

07086730

ABSTRACT:
A star roller used in a paper feed mechanism of an ink-jet printer is constituted by a combination of two star roller units having the same shape in a manner so that one star roller unit is reversed with respect to the other star roller unit. Each star roller unit has a star wheel made of a metal plate by press working, a bearing portion integrally formed with the star wheel by outsert molding and a convex and concave structure formed on an end face of the bearing portion in a manner so that the concave portions of the convex and concave structure of the one star roller unit is engaged with the convex portions the convex and concave structure of the other star roller unit. Consequently, the pitch of the contacting portions of the star roller owing to two star wheels can be made substantially half, and a thickness of each contacting portion can be made thinner, and a top end of each contacting portion can be shaped acute.

REFERENCES:
patent: 6666449 (2003-12-01), DeFosse et al.
patent: 6843762 (2005-01-01), Munche et al.
patent: 10-330005 (1998-12-01), None
patent: 2001-080805 (2001-03-01), None
patent: 2002241008 (2002-08-01), None
patent: 2003-145358 (2003-05-01), None

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