Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
2000-12-14
2004-05-11
Williams, Kimberly (Department: 2626)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S506000, C358S487000, C399S378000, C399S380000
Reexamination Certificate
active
06734995
ABSTRACT:
BACKGROUND OF THE INVENTION
A. Field of the Invention
The present invention relates to a light lid, and more particularly, to a light lid with a previewing window.
B. Description of the Related Art
A common flat bed scanner scans opaque documents. Besides, when using with a light lid, it also can scan transparent originals such as negatives and films. As shown in
FIG. 1
, a typical light lid
100
comprises a housing
110
, a light conductive plate
120
, which is positioned under the housing
110
, and light source devices
121
, which are positioned on both sides of the light conductive plate
120
. The light conductive plate
120
is used to conduct the light that comes from light source devices
121
upwards and downwards evenly in order to provide the light for the scanner.
However, the light provided by the above-mentioned light lid only illuminates into the scanner. It doesn't provide the light that illuminates toward the outside of the scanner; therefore, it cannot provide the function of previewing transparent originals. In other words, it cannot provide light outward to let user to preview the image of a negative or positive film before scanning the negative or the positive film.
SUMMARY OF THE INVENTION
In realizing the above-mentioned problem, an object of the present invention is to provide a light lid that uses a lightsome opening formed on the housing to achieve the function of previewing transparent originals.
To achieve the above-mentioned object, a light lid with a previewing window according to the present invention comprises a housing having a first opening, and a light conductive plate positioned under the housing. The light conductive plate conducts light upwards and downwards evenly to illuminate light evenly not only toward the scanner, but also toward the opening. Therefore, user can preview an transparent original by the light past through the opening.
Also, a light lid with a previewing window according to the present invention comprises light source devices, which are positioned on both ends of the light conductive plate, in order to provide the light for the light lid.
Furthermore, a light lid with a previewing window according to the present invention comprises second openings formed on both sides of the housing, and second reflecting plates located on both sides of the housing, corresponding to the location of the second openings. By using the openings and the reflecting plates, the external light can be reflected into the light conductive plate to provide the light for the light lid.
Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 5159486 (1992-10-01), Webb
patent: 5592258 (1997-01-01), Hashizume et al.
patent: 5956103 (1999-09-01), Ishiguro
patent: 6151426 (2000-11-01), Lee et al.
patent: 6271939 (2001-08-01), Hu et al.
Birch & Stewart Kolasch & Birch, LLP
Microtek International Inc.
Worku Negussie
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