Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
1998-09-09
2001-04-17
Lee, Michael G. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S455000, C358S475000
Reexamination Certificate
active
06216952
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to an improved structure of a scanner and in particular one which is compact in size and easy to assemble.
2. Description of the Prior Art
It has been long desired to have a scanner which is compact in size and easy to assemble, but none of the scanners on the market are satisfactory in these areas. Referring to
FIG. 1
, the conventional scanner
1
generally includes a glass window
11
and a carriage
12
. The carriage
12
includes a casing
121
, a light source
122
, a first mirror
123
, a second mirror
124
, a first mirror
123
, a second mirror
124
, a third mirror
125
, a fourth mirror
126
, a lens assembly
127
, and a charge coupled device (CCD)
128
. The casing
121
is formed with an opening
1211
and a piece of paper
13
is placed face down against the glass window
11
above the carriage
12
.
As shown, the casing
121
is generally rectangular in shape, in which are arranged the light source
122
, the mirrors
123
-
126
, the lens assembly
127
and the charge coupled device
128
. As the carriage
12
is moved beneath the page
13
, the light source
122
illuminates the paper
13
and the carriage
12
captures light bounced off individual areas of the paper
13
. Thereafter, the light from the paper
13
is reflected through the mirrors
123
-
126
to the lens assembly
127
which focuses the light onto the charge coupled device (CCD)
128
that translate the amount of light into an electrical current.
However, as shown in
FIG. 1
, the casing
121
is a closed rectangular member with only one opening
1211
at the top and so all component parts must be correctly arranged inside the casing
121
before it is closed. As a consequence, when required to adjust the component parts, it is necessary to open the casing
121
thereby causing much inconvenience in maintainence. In addition, since the mirrors
123
-
126
are mounted inside the casing
121
, there must be fastening means for fixing the mirrors in place thus increasing the manufacturing cost.
Therefore, it is an object of the present invention to provide an improved structure of a scanner which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
This invention is related to an improvement in the structure of a scanner.
It is the primary object of the present invention to provide an improved structure of a scanner which is compact in size and easy to assemble.
According to the present invention, a structure of a scanner includes a housing having a top provided with a glass window, a carriage mounted inside housing, the carriage including a casing having a plurality of openings, a light source arranged within the casing for illuminating an object placed face down against the glass window above the carriage, and a plurality of mirrors fitted in the openings.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 3867569 (1975-02-01), Watson
patent: 4893196 (1990-01-01), Koshiyouji et al.
patent: 4982235 (1991-01-01), Fujino
patent: 5231513 (1993-07-01), Yokobori et al.
patent: 5241406 (1993-08-01), Johnston et al.
patent: 5341225 (1994-08-01), Stein et al.
patent: 5606173 (1997-02-01), Concannon et al.
patent: 5696609 (1997-12-01), Cresens et al.
patent: 5736638 (1998-04-01), Wang et al.
patent: 296 18 433 (1998-04-01), None
Dbtel Incorporated
Lee Michael G.
Rosenberg , Klein & Lee
Yven J
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