JPH1079840A - Image input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable reading an original which is longer than an image display part by an image input device which has an image display part an a read part integrated. SOLUTION: The read part 12, equipped with a line image sensor 12a which moves along the image display part 11 and reads the original placed on the image display part 1, is stopped at a stand-by position P outside the area of the image display part; and read glass 22 is provided above the read part 12 stopped at the stand by position P, and a paper feed roller 25 is so provided that the sheet-type original 23 travels on the glass in a U-shape. While feeding the sheet-type original 23 by the paper feed roller 25, the read part 12 makes a read.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input device having a structure in which an image display section and a reading section are integrated.

[0002]

2. Description of the Related Art The present inventors have previously developed an image input device having a structure in which an image display unit and a reading unit are integrated, and proposed an image input device shown in FIG. The image input device shown in FIG.
An image display unit 1 using a smart panel including an image display panel 1a and a touch sensor panel 1b, and a reading unit 2 for reading the entire display area on the image display unit 1 are provided. The reading unit 2 includes a line image sensor 2a having a reading width Lx corresponding to the entire width Wx of the image display unit 1. The reading unit 2 is connected to the image display unit 1 by the guide unit 2b.
Are guided in the length direction (Y direction), and are driven to move in the same direction by the motor 2c.

When a document 3 is set (placed) on the image display section 1, the original 3 is placed on the touch sensor panel 1b of the image display section 1.
Is detected, and a reading operation is performed based on this detection. In this reading operation, the image sensor 2a operates in the main scanning direction (X
Direction) in the form of a line, and the reading unit 2
Is moved in the sub-scanning direction (Y direction). As a result, the image of the document 3 set in an arbitrary area of the image display unit 1 is read from the XY two-dimensional directions.

The above-described apparatus has an advantage that an image input apparatus that performs both display and reading operations can be made compact by using the display surface of the image display section 1 as it is as a document reading table. doing.

[0005]

However, in the above-described apparatus, a document larger than the image display unit 1, for example,
There is a problem that a document longer than the image display unit 1 cannot be read. There is also a problem that an image cannot be displayed when reading a document.

The present invention has been made in view of the above-described problems, and has as its object to provide an image input apparatus capable of reading a document longer than the image display unit 1.

Another object of the present invention is to provide an image input apparatus capable of reading a document and displaying an image in parallel.

[0008]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention stops a reading unit which scans and moves an image display unit at a standby position outside an area of the image display unit, and further moves the reading unit to a standby position. The document conveying means is arranged so as to convey the sheet-shaped document through the reading point of the stopped reading section.

According to the present invention, a sheet-shaped document having an arbitrary length can be conveyed through a reading point by the document conveying means. Therefore, it is possible to read a sheet-shaped document having a length longer than that of the image display section, and since the sheet-shaped document travels at a position outside the image display section, it does not interfere with the image display section and can read the document. And image display can be performed in parallel.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to an image display section, which is provided so as to move along the image display section from a standby position outside the area of the image display section, and abut on the image display section. A reading unit for reading a read original, a reading unit moving mechanism for moving the reading unit along the image display unit, and returning the reading unit to a standby position outside the area of the image display unit, and a reading unit stopped at the standby position Document conveying means for conveying a sheet-shaped document through the reading point of the image reading section, whereby the reading section is moved along the image display section and Can read the originals in contact,
Further, there is an effect that the sheet-shaped document can be conveyed through the reading point by the document conveying means in a state where the reading section is stopped at the standby position, and the sheet-shaped document can be read.

The document conveying means is provided at a reading point of a reading unit stopped at a standby position, and feeds a sheet-shaped document. The sheet feeding roller cooperates with the sheet feeding roller. It is preferable that a guide is formed to form a U-shaped transport path through which the document passes, so that the sheet-shaped original fed through the U-shaped transport path does not overlap the image display unit. With this configuration, the sheet-shaped document can be conveyed through the reading point by a single paper feed roller, and the sheet-shaped document does not overlap with the image display unit, which hinders image display by the image display unit. do not do.

It is preferable that the reading section is configured to be capable of reading a document regardless of a relative movement direction with respect to the document to be read. With this configuration, when the reading unit reciprocates the image display unit, reading can be performed when the reading unit moves in any direction, and there is no limitation on the direction in which the document conveying unit conveys the sheet-shaped document,
Design flexibility is increased.

Further, in order to drive the reading unit moving mechanism for moving the reading unit and the sheet feeding roller, a driving gear serving as a common driving source and a driving gear engaged with the driving gear are moved to move the reading unit. A planetary gear for switching a mechanism and a driving connection to a paper feed roller, a mounting plate on which the planetary gear is mounted, and fixing the mounting plate at a position where the planetary gear is drivingly connected to the reading unit moving mechanism. It is preferable to provide means. With this configuration, the rotational force from a single drive gear can be switched by the planetary gear and transmitted to the reading unit moving mechanism or the paper feed roller, and the configuration of the drive system can be simplified. Further, when the planetary gear is in a position where it is drivingly connected to the reading unit moving mechanism, the mounting plate holding the planetary gear is fixed by fixing means, so that the planetary gear can be rotated in either forward or reverse direction. The mounting plate holding the gears does not move, so that the planetary gears can always be kept connected, and the torque of the drive gear can be stably transmitted to the reading unit moving mechanism, and the reading unit can reciprocate. it can.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing a part of an image input device according to an embodiment in which the present invention is applied to a smart panel, and FIG. 2 is a schematic plan view showing the image input device with a part cut away. is there. 1 and 2, reference numeral 10 denotes an outer cover of a smart panel, 11 denotes an image display unit, and an image display panel 11a and a touch sensor panel 11 are provided.
b. Reference numeral 12 denotes a reading unit which can read a document placed on the image display unit 11;
Is mounted with a line image sensor 12a having a reading width corresponding to the entire width. The reading unit 12 is movably held by guide shafts 13 provided on both sides of the image display unit 11 in the length direction (Y direction). It is movable along the display unit 11.

Reference numeral 15 designates the reading unit 12 as the image display unit 1
This is a reading unit moving mechanism that moves along the image display unit 11 for reading the original on the first unit 1 and returns to the standby position P outside the area of the image display unit 11. This reading unit moving mechanism 15
A driving pulley 16 and a driven pulley 17 are provided so as to sandwich the moving area of the reading unit 12, and a belt 18 is wrapped around the pulleys.
It is connected to. The drive pulley 16 is connected to a drive shaft 19.
, And a belt drive gear 20 is fixed to the drive shaft 19. Thus, by reciprocating the belt drive gear 20, the belt 18 can reciprocate and the reading unit 12 can reciprocate. A drive device for reciprocatingly rotating the belt drive gear 20 will be described later.

A reading glass 22 is provided above the reading unit 12 stopped at the standby position P.
The reading point A of the reading unit 12 is located on the upper side 2. Further, above the reading glass 22, there is provided a document conveying means 24 for conveying the sheet-shaped document 23 through the reading point A. The document conveying means 24 includes a sheet feeding roller 25 and a sheet-shaped document 2 in cooperation with the sheet feeding roller 25.
And a guide 26 for forming a U-shaped conveyance path through which the document 3 passes.
And a document discharge port 26b. Thus, by inserting the leading end of the sheet-like document 23 from the document insertion opening 26a and rotating the paper feed roller 25, the sheet-like document 2
3 can be conveyed through the reading point A, and the sheet document 23 passing through the reading point A can be read by the reading unit 12 stopped at the standby position P. At this time, since the sheet-shaped document 23 is transported along the U-shaped transport path, the sheet-shaped document 23 does not overlap the image display unit 11, and is displayed on the image display unit 11. There is no interference.

Here, the reading control circuit of the reading section 12 is designed so that the reading section 12 can read regardless of the relative movement direction of the document to be read, and thus can read in both directions. 12 is controlled.
That is, the image information is stored in the buffer from the lower address to the upper address, or vice versa, depending on the moving direction of the reading unit 12 with respect to the document. Thereby, when the reading section 12 reciprocates below the image display section 11, the image can be read well both in the forward path and the return path, and at the standby position P, the sheet document 23 is moved in either direction. The image can be read satisfactorily even when being conveyed. For this reason, in designing the document conveying means 24, there is no problem in reading even if the conveying direction of the sheet-shaped document 23 is changed, and therefore, in the conveying direction in consideration of easy handling of the sheet-shaped document. It can be determined appropriately.

Next, a drive unit for rotating the drive shaft 19 of the reading unit moving mechanism 15 for reciprocating the reading unit 12 and the paper feed roller 25 of the document conveying means 24 will be described. 3A and 3B show the driving device in a state of reading an original placed on an image display unit. FIG. 3A is a schematic plan view of a portion provided with the driving device, and FIG. 3B is a schematic sectional view thereof. . 4A and 4B show the driving device in a state in which the sheet-shaped document 23 is read. FIG. 4A is a schematic plan view of a portion provided with the driving device, and FIG. 4B is a schematic sectional view thereof. 3 and 4, reference numeral 27 denotes a paper feed roller gear attached to the shaft end of the paper feed roller 25 so as to rotate integrally therewith, and reference numeral 28 denotes an intermediate gear that meshes with the paper feed roller gear 27 and is rotatable.

Reference numeral 30 denotes a drive gear serving as a common drive source for the reading unit moving mechanism and the paper feed roller, 31 denotes a reduction gear that rotates integrally with the drive gear 30, and 32 holds the drive gear 30 and the reduction gear 31. Axis. The reduction gear 31 is drivingly connected to a drive motor (not shown) via a gear train, and the drive gear 30 is configured to be rotationally driven by the drive motor. Reference numeral 34 denotes a planetary gear that moves while meshing with the drive gear 30, and is rotatably held by a mounting plate 35 that is rotatably held by a shaft 32. As shown in FIG. 3, the planetary gear 34 is
Belt drive gear 2 attached to the drive shaft 19 of No. 5
4 and the position where the rotation of the drive gear 30 is transmitted to the drive shaft 19, and as shown in FIG. Can be moved to a position where the rotation of the reading unit is transmitted, and by this movement, the drive connection to the reading unit moving mechanism and the sheet feeding roller can be switched. The planetary gear 34 is configured so that a slight rotational resistance is applied. When the drive gear 30 rotates the planetary gear 34, a rotational force in the same direction as the drive gear 30 acts on the mounting plate 35. Therefore, when the drive gear 30 is rotated clockwise, a clockwise rotation force is automatically applied to the mounting plate 35, and the mounting plate 35 rotates clockwise to rotate the planetary gear 3
4 is moved to a position where it meshes with the intermediate gear 28, and conversely, when the drive gear 30 is rotated counterclockwise, a counterclockwise rotational force is automatically applied to the mounting plate 35, and the mounting plate 35 is rotated. Can rotate in the counterclockwise direction to move the planetary gear 34 to a position where it meshes with the belt drive gear 20.

When the planetary gear 34 is engaged with the belt drive gear 20 and is in a position where it is drivingly connected to the reading unit moving mechanism 15 as shown in FIG.
The fixing means is a fixing means for fixing the mounting plate 35 holding the fixed position at that position. In this embodiment, a solenoid 37b having a fixing pin 37a is used. On the other hand, the mounting plate 35 has a pin hole 38 into which the fixing pin 37a is inserted. Reference numeral 40 denotes a document presence / absence detection sensor that detects insertion of the sheet document 23.

Next, the operation of the image input apparatus having the above configuration will be described. During normal standby, the planetary gear 34 is engaged with the belt drive gear 20 as shown in FIG.
A fixing pin 37a is inserted into the pin hole 38 of No. 5 to restrain the mounting plate 35 from moving. When a document is placed on the image display unit 11 in this state, the touch panel of the image display unit 11 detects the document and starts a document reading operation.
That is, the drive motor starts rotating, the drive gear 30 rotates clockwise as shown by the arrow in FIG. 3B, and the drive shaft 19 is shown by the arrow through the planetary gear 34 and the belt drive gear 20. Rotate in the direction. This allows
The belt 18 travels in the direction of the arrow in FIG.
2 is moved from the standby position to the image display unit 11 (see FIG. 2), and the reading unit 12 scans and moves along the image display unit 11,
Scan the original. When the reading unit 12 moves to the end of the image display unit 11, the drive motor rotates in the reverse direction, whereby the reading unit 12 returns to the original standby position. The reading unit 12
Also returns to its original position under the image display unit 11,
The original can be read as needed, whereby the original can be read twice by one reciprocation of the reading unit 12.
It is possible to improve the operability when the reading is required twice. Further, the driving gear 30 reciprocates, but the planetary gear 3
Since the mounting plate 35 holding 4 is fixed by the fixing means 37, the planetary gear 34 does not come off from the gear 20 and the rotation can always be transmitted.

Next, when reading the sheet document 23, the leading end of the sheet document 23 is inserted into the document insertion opening 26a. Then, the sheet-form document 23 is detected by the document presence / absence detection sensor 40, and the solenoid 37b is operated to retract the fixing pin 37a. Thereby, the mounting plate 35
Is released. Next, the drive motor starts rotating, and rotates the drive gear 30 clockwise as shown in FIG. As a result, the mounting plate 35 rotates clockwise, and as shown in FIG.
It is pressed against 8 and meshes. After that, the driving gear 30
Keeps rotating in the clockwise direction, the planetary gear 34 is kept engaged with the intermediate gear 28, and the driving gear 3
The rotation of 0 is transmitted to the paper feed roller 25 via the planetary gear 34, the intermediate gear 28, and the paper feed roller gear 27. Thus, the sheet feeding roller 25 is rotated to convey the sheet-shaped document 23 through the reading point A (see FIG. 1), and the document is read by the reading unit 12 stopped thereunder. Here, since the sheet-shaped document 23 is conveyed by the paper feed roller 25, the length thereof is not limited at all, so that a document longer than the image display unit 11 can be read without any trouble.
Further, at the time of this reading, since there is no original on the image display section 11, an image can be displayed in parallel with the reading of the original.

When the reading of the sheet document 23 is completed, the drive motor rotates in the reverse direction to rotate the drive gear 30 in the counterclockwise direction in FIG. 4B, and the mounting plate 35 is rotated in the counterclockwise direction. When the planetary gear 34 is separated from the intermediate gear 40, FIG.
(B) meshes with the belt drive gear 20,
Stop. Thereafter, the solenoid 37b is moved to the fixing pin 37a.
To fit into the pin hole 38 of the mounting plate 35, return to the original standby state, and prepare for the next operation.

As described above, the image input apparatus of this embodiment can perform both reading of the original placed on the image display section 11 and reading while transporting the sheet original 23.

In the above embodiment, the planetary gear 34 is provided with rotational resistance, and the mounting plate 35 holding the planetary gear 34 is automatically rotated by the rotation of the drive gear 30 to switch the planetary gear 34. However, the present invention is not limited to this configuration, and the planetary gear 34 may simply be rotatable, and the mounting plate 35 may be moved manually. That is, as shown in FIG. 5, a knob 35a is attached to the mounting plate 35 and extended outside the outer cover 10, and the knob 35a is manually moved to move the planetary gear 3
4 may be switched. However, in this case, it is necessary to provide an appropriate means (for example, a claw or the like) for fixing the mounting plate 35 to a position where the planetary gear 34 meshes with the intermediate gear 28 and a position where the planetary gear 34 meshes with the belt drive gear 20. is there. Further, the present invention is not necessarily limited to the case where the switching mechanism using the planetary gear as shown in the embodiment is used, and other switching mechanisms may be used. May be driven by different motors.

[0026]

As is apparent from the above description, according to the present invention, the reading unit which scans and moves the image display unit is stopped at a standby position outside the area of the image display unit, and is stopped at the standby position. By providing a document conveying means for conveying a sheet-shaped document through the reading point of the reading unit, not only can the document placed on the image display unit be read, but also the sheet-shaped document can be read at a place different from the image display unit. You can read while sending the original,
It is possible to read a sheet-shaped document of an arbitrary length, and therefore a length longer than the image display unit, and at this time, there is an effect that document reading and image display can be performed in parallel. I have.

The document conveying means includes a sheet feeding roller for conveying the sheet document, and a guide for forming a U-shaped conveying path through which the sheet document passes in cooperation with the sheet feeding roller. With this configuration, the document conveying means can be configured with a simple structure, cost can be reduced, and the sheet-shaped document does not overlap with the image display unit.
The effect of not disturbing the image display by the image display unit can be obtained.

Further, if the reading section is configured to be able to read the original regardless of the relative movement direction with respect to the original to be read, when the reading section reciprocates the image display section, it moves in any direction. In some cases, reading can be performed, and the effect of improving the efficiency of the reading operation can be obtained.

Further, the reading unit moving mechanism for moving the reading unit and the paper feed roller are driven by a driving gear driven by a common driving source, and the switching is performed in a state in which the driving gear is meshed with the driving gear. When the configuration is performed by the moving planetary gears, the configuration of the drive system can be simplified, and the effect of reducing the cost of the drive system can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an image input apparatus according to an embodiment of the present invention, with a part thereof broken away.

FIG. 2 is a schematic side view showing the image input device shown in FIG.

FIG. 3A shows a driving device according to the embodiment shown in FIG.
1 is a schematic side view of a portion provided with a driving device in a state of reading a document placed on an image display unit. (B) A driving device of the embodiment shown in FIG. Schematic sectional view of the part provided with

FIG. 4 (a) shows a driving device in the embodiment shown in FIG.
1 shows a state in which a sheet-shaped document is read, and is a schematic plan view of a portion provided with the driving device. (B) The driving device in the embodiment shown in FIG. Schematic sectional view of the part provided with

5 shows an embodiment of the present invention, and is a schematic cross-sectional view of the same portion as FIG. 4 (b).

FIG. 6 is a block diagram showing a schematic configuration of a conventional image input device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 exterior cover 11 image display unit 12 reading unit 13 guide shaft 15 reading unit moving mechanism 16 drive pulley 17 driven pulley 18 belt 19 drive shaft 20 belt drive gear 22 reading glass 23 sheet document 24 document conveying means 25 paper feed roller 26 guide 27 Feed roller gear 28 Intermediate gear 30 Drive gear 31 Reduction gear 32 Shaft 34 Planetary gear 35 Mounting plate 37 Fixing means 37a Solenoid 37b Fixing pin 38 Pin hole

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location H04N 1/00 108 G06F 15/64 320A

Claims (4)

[Claims] An image display unit, and a reading unit that is provided to move along the image display unit from a standby position outside an area of the image display unit, and reads a document abutting on the image display unit. A reading unit moving mechanism for moving the reading unit along the image display unit and returning the reading unit to a standby position outside the area of the image display unit; and a reading point of the reading unit stopped at the standby position. An image input device, comprising: a document conveying means for conveying a sheet-shaped document. 2. A document feeding means is provided at a reading point of a reading unit stopped at a standby position, and feeds a sheet-shaped document, and cooperates with the sheet feeding roller to feed the sheet-shaped document. It has a guide that forms a U-shaped transport path that passes,
2. The image input device according to claim 1, wherein a sheet-shaped document fed through the U-shaped conveyance path is configured not to overlap an image display unit. 3. The image input apparatus according to claim 1, wherein the reading unit is configured to be capable of reading the document regardless of a relative movement direction with respect to the document to be read. 4. A drive gear serving as a common drive source for a reading unit moving mechanism for moving a reading unit and a sheet feeding roller, and a gear meshing with the driving gear to move, and the reading unit moving mechanism and the sheet feeding roller are moved. A planetary gear for switching drive connection, a mounting plate on which the planetary gear is mounted, and fixing means for fixing the mounting plate at a position where the planetary gear is drivingly connected to the reading unit moving mechanism. 4. The image input device according to claim 2, wherein: