Sound reduced rotatable polygon assembly

Details Sound reduced rotatable polygon assembly Sound reduced rotatable polygon assembly

1998-04-22

1999-05-04

Phan, James

Optical: systems and elements

Miscellaneous

359216, G02B 2608

Patent

active

059010002

ABSTRACT:
Mirror (1) of a laser printhead has an octagonal outer configuration. During normal use the mirror is rotated at high speed, which drives ambient air which causes noise. To control the noise a shroud (11) surrounds the mirror and confines the air except at an opening in the shroud to permit a laser beam to reach the mirror and be reflected out. A rib extends over the mirror and near the area of the opening, positioned to reduce sounds created by the assembly.

REFERENCES:
patent: 4469430 (1984-09-01), Terashima
patent: 5206754 (1993-04-01), Yano et al.
patent: 5506719 (1996-04-01), Murakami et al.
patent: 5589973 (1996-12-01), King et al.
patent: 5604621 (1997-02-01), Fujikane
patent: 5671081 (1997-09-01), Hisa
patent: 5675431 (1997-10-01), Bock

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