Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
1998-06-18
2001-02-27
Lee, Cheukfan (Department: 2722)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S487000, C358S496000
Reexamination Certificate
active
06195181
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image reading apparatus for reading an image from a transmissible original or reflective original and converting it into an electrical image signal.
2. Related Art Statement
In the past, for example, Japanese Unexamined Patent Publication No. 7-23180 has proposed an apparatus as an image reading apparatus for reading a non-transmissible original that is a reflective original or a transmissible original and converting it into electrical image information. An image signal output from the image reading apparatus is converted into digital data, transmitted to, for example, a personal computer or the like, and then utilized.
FIG. 14
is a sectional view of an image reading apparatus disclosed in the Japanese Unexamined Patent Publication No. 7-23180, showing a state in which a reflective original is read.
FIG. 15
is a sectional view of part of the image reading apparatus in a state in which an image on a transmissible original is read. The image reading apparatus comprises a transmissible original station
102
which includes a light source unit
103
and on which a transmissible original
1
to be placed on the top of a main unit
101
is stationed, a reflective original station
104
including an original station glass plate
105
on which a reflective original
2
is stationed, a sub-scan drive motor
106
incorporated in the main unit
101
, a timing belt
107
to be driven to rotate by means of the drive motor
106
, a guide shaft
108
lying parallel to the timing belt
107
, a reader
109
engaged with the timing belt
107
and moved along the guide shaft, and a transmissible original image formation optical system
110
located below the transmissible original station
102
and composed of an image formation lens and mirror.
The reader
109
includes a light source unit
111
, an imaging optical system
112
composed of a mirror and image formation lens, and a line sensor
113
for converting a linear image extending in a main-scan direction into an electrical image signal.
As mentioned above, when the conventional image reading apparatus having the foregoing components reads a reflective original, the reflective original
2
is stationed on the glass plate
105
of the original station. The original
2
is held with the flatness thereof maintained by a cover. The reader
109
is driven in a direction X2, that is a sub-scan direction, by means of the drive motor
106
, whereby an image is read from the reflective original
2
.
For reading an image from a transmissible original, the reader
109
is, as shown in
FIG. 15
, moved to a position near the transmissible original station
102
, and thus set to a state in which light transmitted by an original is routed to the line sensor
113
by the transmissible original illumination unit
103
, imaging, optical system
110
, and reflector. In the set state, the transmissible original
1
is driven in a direction X1 that is a sub-scan direction by means of a transmissible original driving means (not shown) included separately. Thus, the image on the transmissible original
1
is read.
However, in the image reading apparatus disclosed in the Japanese Unexamined Patent Publication No. 7-23180, the reflective original station
104
and transmissible original station
102
must be located on the main unit
101
, and the light source units
111
and
103
must be located at different positions. This leads to the large main unit. Furthermore, as a sub-scan driving mechanism important to input a high-definition image, mechanisms dedicated to a reflective original and transmissible original respectively must be included. This increases cost. Moreover, depending on whether an original is the transmissible original or reflective original, the setting of the image reading apparatus must be modified by a user, that is, the position of the reader
109
must be changed by a user. Thus, poses an inconvenience.
SUMMARY OF THE INVENTION
The present invention is directed to solving to solve the foregoing problems. An object of the present invention is to provide an image reading apparatus capable of reading an image from a transmissible original or reflective original, which can be handled easily, designed compactly, and built inexpensively.
An image reading apparatus of the present invention is an image reading apparatus capable of reading an image from a transmissible original or reflective original, and comprises: a lens unit that moves in a direction substantially vertical to a stationed transmissible original or reflective original so as to form an image represented by light transmitted through the transmissible original or light reflected from the reflective original; an original judging means for judging the type of stationed original; an illumination unit capable of moving from one side of a stationed original to the other side thereof; and a control means for controlling an image-formed position on the lens unit and a set position of the illumination unit on the basis of judgment given by the original judging means.
The other features and advantages of the present invention will be fully apparent from the description below.
REFERENCES:
patent: 5673125 (1997-09-01), Merecki et l.
patent: 5818611 (1998-10-01), Shih
patent: 5822087 (1998-10-01), Tsai
patent: 5883727 (1999-03-01), Tsai
patent: 5907411 (1999-05-01), Han
patent: 7-23180 (1995-01-01), None
Lee Cheukfan
Olympus Optical Co,. Ltd.
Ostrolenk Faber Gerb & Soffen, LLP
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