JP2725614B2 - Document holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a document holding table used for a high-resolution facsimile apparatus for scanning a stationary document and for placing the document on a flat surface.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a document holding table of this type is provided between a support table 101 and a document table 108.
An elastic member 107 for vertically holding the transparent document table 108 on the transparent plate 103 side is provided. When the transparent plate 103 is closed on the support table 101 side, the transparent plate 103 is moved to the document table 108.
Pin 104 and transparent plate 10 for positioning
3 has a magnet 105 for restricting the movement in the opening direction. Further, the document holding table presses and holds the document 112, and a pointer 110 used when a partial reading of the document 112 is designated.
, And a light source 113 below the document table.
Ruled lines are drawn on the document table 108 to make it easy to confirm the partial reading position.

[0003]

As described above, in the conventional document holding table, the document table 10 which is a transparent plate is used.
8, the transparent plate 103 is closed and the original 112 is pressed and held.
13 irradiates light. For this reason, there is the following disadvantage when performing partial reading of the document 112 by a reading device (not shown). That is, since the light source 113 is located at one location, the ruled lines drawn on the document table 108 are only partially projected onto the document 112, and it is difficult to specify the pointer 110 when partially reading the document 112. 1
There is a problem in that it is difficult to understand even if 12 is bent and placed.

It is an object of the present invention to provide a document holding table which makes it easy to specify a pointer when partially reading a document and allows the entire ruled line to be clearly checked.

[0005]

According to the present invention, there is provided an original placing table on which an original is placed and a ruled line is drawn, a transparent plate for holding the original from above the original placing table and holding the original, A document holding table having a light source that transmits light through the document table and emits light, and a pointer member for designating a reading area of the document, on a surface opposite to the surface of the document placed on the table. hand,
There is provided a document holding table provided with a reflector for reflecting light from a light source, transmitting the document table, and irradiating the document with the light. With this configuration, the ruled line drawn on the document table is projected onto the entire document, and designation by the pointer member using the ruled line as a mark becomes easy.

In the present invention, when the document table is a white table that can partially transmit the light from the light source, there is an effect that the ruled lines can be seen well when the light is irradiated from below. The white table as the document mounting table may be a substrate having a translucent white base itself or a transparent table having a surface coated with a white paint.

According to the present invention, there is provided a pointer member which has a metal body on a part of a transparent plate, and has a magnet for absorbing the metal body to fix the transparent plate horizontally on a document table with a document interposed therebetween. The height of the upper surface is lower than the height of the magnet, so that the pointer member can be moved under the transparent plate even when the transparent plate is fixed (closed).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall perspective view showing an original holding table according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG.
It is a -X enlarged sectional view.

In FIG. 1, a document holding table includes a support table 1 and
A transparent plate 3 pivotally supported at one end of the support base 1 in the main scanning direction via a shaft 2 parallel to the sub-scanning direction BB ′ so as to be openable and closable;
A hole 1a at the bottom of the support 1 having a coiled spring 7 at the lower end
A plate-shaped document table 8 which moves vertically with the pins 6 fitted to the table as guides, a white fluorescent light source 13 for irradiating light from under the document table 8, and a light source 13 under the light source 13. It has a reflector 14 arranged and fixed to the support 1 and a pointer holder 11 on which the magnet 5 is fixed on the upper surface and which holds the pointer member 10 slidably.

The transparent plate 3 can be opened upward about the shaft 2 supported on one end of the support base 1. The transparent plate 3 is made of a transparent material such as a glass plate, and has good parallelism on both sides so that optical distortion does not occur.

The magnet 5 is provided on the other end of the pointer holder 11 in the main scanning direction of the original, so that when the transparent plate 3 is closed, the iron piece 9 attached to the corner of the free end of the transparent plate 3 is provided.
Is attracted to the magnet 5, the transparent plate 3 is horizontally stopped with respect to the document table 8, and the distance between the transparent plate 3 and the document table 8 is kept constant.

As shown in FIG. 2, the support 1 and the reflector 14
Has a hole 1a and a hole 14a into which the pin 6 fixed on the back side of the document table 8 is inserted, and a hole 14b through which the coil spring 7 penetrates is formed in the reflector 14. Pin 6
Is located at the center in the main scanning direction and the sub-scanning direction. Light source 13
Are arranged in parallel with the sub-scanning direction, and are located slightly closer to the pointer holder 11 than the center where the pin 6 is located.

FIG. 4 is an enlarged plan view of the document holding table when the transparent plate 3 is closed. 3 and 4, the pointer holder 11 is fixed to the other end of the support base 1 in the main scanning direction.
When performing the partial reading of No. 2, a plurality of pointer members 10 for designating the partial reading of the document 12 are provided in a row in the sub-scanning direction BB ′. Using the guide rail 11a provided in the sub-scanning direction as a guide, the pointer member 10 moves in the BB 'direction to designate partial reading of the document 12. The upper part of the pointer member 10 is located on the upper surface of the frame of the support base 1, and the position is confirmed from above through the transparent plate 3. Further, the lower portion of the pointer member 10 is held by the guide rail 11a, and one end thereof is
It protrudes outside from one side. Further, the height of the pointer member 10 is lower than the magnet 5. Accordingly, even when the transparent plate 3 is completely closed, the pointer member 10 is not pressed down by the transparent plate 8 and the portion of the lower portion of the pointer member 10 protruding outside from the pointer guide 11 is operated. Enables 10 moves. Pointer member 10
As shown in FIG. 5, a method of designating the reading range by using the pointer member 1 is to divide the document 12 in the sub-scanning direction.
Original 1 specified by 0 and sandwiched between pointer members 10
2 are scanned through the transparent plate 3 by an optical system (not shown).

The document table 8 is made of a transparent material. As shown in FIG. 6, a plurality of ruled lines 80 are printed on the surface, and a white paint is applied thereon. The document table may be a white table on which the material itself can partially transmit light. A light source 13 is provided below the document table 8 to irradiate the document table 8 with light from below. This light acts so that the ruled line 80 emerges on a white background of the document table.

The reflector 14 arranged below the light source 13 is
By reflecting the light from the light source, the reflected light reaches the entire document table or the ruled line printed on the document table 8 is projected onto the document 12 as a whole, and the pointer member 1 is marked with the ruled line as a mark.
It is easy to specify the reading range by 0. The reflector 14
The surface is a polished stainless steel plate or a mirror. The reflector 14 also contributes to reducing the light amount of the light source 13.
In other words, since the amount of projection onto the document increases even with a small amount of light, the light source does not need to be driven close to the rating, and the life of the light source can be extended.

Next, the operation of the document holding table according to the present embodiment will be described. When the original 12 is placed on the original placing table 8 and partial reading is designated, light from the light source 13 installed below the original placing table 8 and reflected by the reflector 14 are irradiated onto the original placing table 8. Thus, the ruled line 80 printed on the document placing table 8 is transmitted through the document 12 as shown in FIG. 6, and the pointer 10 can be accurately specified using the ruled line as a mark. When reading a document, a reading scanning device (not shown) scans over the transparent plate 8. The pointer 10 is outside the effective reading range of the document 12, and even if the pointer 10 is scanned along with the scanning of the document, the pointer reading information is not processed as an image signal of the document. However, when the position of the pointer, particularly the position of the tip of the pointer is detected, the reading scan of only the regions D and G between the pointers is executed as shown in FIG.
For example, a specific mark may be attached to the pointer to detect the leading end position of the pointer when scanning the document.

In the embodiment described above, a plurality of hands 10
Are arranged in parallel with the sub-scanning direction, but may be arranged not only in the sub-scanning direction but also in the main scanning direction. In this case, the ruled line of the document mounting table 8 is added to the ruled line provided perpendicular to the ruled line 80 of FIG.

The transparent plate 3 has an axis 2 parallel to the sub-scanning direction.
Is opened and closed, but may be changed so as to be opened and closed around an axis (not shown) parallel to the main scanning direction. Further, although the document holding table 8 can be moved up and down by the coiled spring 7, it may be moved up and down (in a direction perpendicular to the document surface) by a vertical movement mechanism other than the coiled spring 7. For example, it may be electrically moved up and down by an electric motor. Further, an up-down moving mechanism for fixing the document holding table 8 and moving the transparent plate 3 in the up-down direction may be provided instead.

The holding member for holding the free end of the transparent plate 3 on the support table 1 is not limited to the combination of the magnet 5 and the iron piece 9, but may be pressed from above by another holding member.

[0021]

As described above, according to the present invention, when partial reading of a document is designated, light is irradiated from below the document table by a light source, and a reflector is provided near the light source.
Ruled lines printed on the document table are projected onto the document as a whole, making it easy to specify the pointer member using the ruled lines as a mark, making it possible to accurately specify partial reading of the document and extending the life of the light source. Has the effect of extending.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a document holding table according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the document holding table of FIG.

FIG. 3 is an enlarged sectional view taken along line XX of FIG. 1;

FIG. 4 is an enlarged plan view when the transparent plate of the document holding table of FIG. 1 is closed.

FIG. 5 is a schematic plan view for explaining a method of designating a pointer member using the document holding table of FIG. 1;

FIG. 6 is a schematic plan view for explaining a method of designating a pointer member using the document holding table of FIG. 1;

FIG. 7 is a cross-sectional view showing a conventional document holding table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support stand 2 axis 3 Transparent plate 5 Magnet 6 Pin 7 Coiled spring 8 Document mounting table 9 Iron piece 10 Pointer member 12 Document 13 Light source 14 Reflector

Claims (6)

(57) [Claims] 1. A document table on which a document is placed and ruled lines are drawn, a transparent plate for holding the document from above the document table and holding the document, and a document placed on the document table On a surface opposite to the surface of the light source, a light source that transmits light through the document mounting table and irradiates light, and a pointer holding member for designating a reading area of the document, the light from the light source A document holding table provided with a reflector for reflecting and transmitting the document through the document mounting table to irradiate the document. 2. The image forming apparatus according to claim 1, wherein the document table is a white table partially transmitting light from the light source, and the ruled line is parallel to a main scanning direction or a sub-scanning direction of a reading area of the document. 2. The document holding table according to claim 1, wherein: 3. The document holding table according to claim 2, wherein the document mounting table is a transparent table having a surface coated with a white paint. 4. The document holder according to claim 2, wherein the pointer member is held by a pointer holder so as to be slidable in the sub-scanning direction. 5. The document holding table according to claim 4, further comprising means for moving the document table in a direction perpendicular to the document surface. 6. The transparent plate has a metal part in a part, and has a magnet for horizontally fixing the transparent plate on the original placing table with the original being interposed therebetween by attracting the metallic body by magnetic force. 6. The document holding table according to claim 5, wherein the height of the upper surface of the pointer member is lower than the height of the magnet.