Patent · US Active

Media sensor with polarization filter

US7780258B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

Avago Technologies ECBU IP (Singapore) Pte. Ltd. · SG

Inventors

Siang Leong Foo · Bukit Mertajam, MY
Yee Loong Chin · Batu Gajah, MY

Key dates

Filing date	Oct 12, 2007
Grant date	Aug 24, 2010
Priority date	—
Expiry date	May 15, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J11/009
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus for sensing a media type of a print medium. Embodiments of the apparatus include an emitter, a polarization filter, and a detector. The emitter is configured to emit light toward a surface of the print medium. The polarization filter is configured to filter polarized light reflected from the surface of the medium. The detector is coupled to the polarization filter and configured to detect the filtered light. The detector is also configured to generate an electrical signal representative of the detected light.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.