Variable reflectance cover

Details Variable reflectance cover Variable reflectance cover

2006-05-09

2006-05-09

Williams, Kimberly (Department: 2626)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S496000, C358S497000, C358S475000, C349S096000, C349S099000, C359S016000, C271S186000

Reexamination Certificate

active

07042598

ABSTRACT:
A variable reflectance cover for a scanning system. The cover comprises a backing moveable through a plurality of positions. Moving the backing through the plurality of positions varies the reflectance of the cover. In one embodiment, the backing is an endless rotatable belt. In a second embodiment, the backing is a removable panel having a first side with a first reflectance and a second side with a second reflectance. In yet a third embodiment, the backing includes polarizers placed adjacent to a reflective panel. Rotating one polarizer relative to another varies the reflectance of the cover. In another embodiment, magnetic louvers are provided for changing the reflectivity of the cover.

REFERENCES:
patent: 3947117 (1976-03-01), Basu et al.
patent: 4118119 (1978-10-01), Maiorano
patent: 4382672 (1983-05-01), Boykin
patent: 5790211 (1998-08-01), Seachman et al.
patent: 6002892 (1999-12-01), Takashimizu
patent: 6219158 (2001-04-01), Dawe
patent: 6452653 (2002-09-01), Yamanaka et al.

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