JPH11232422A - Paper sheets turn-over device and optical reader using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical reader which carries no paper sheets. SOLUTION: The paper sheets 5 can be rocked toward an arrow B around a pinch roller 1 linked with a pinch roller 2. When the sheets 5 are set, the roller 2 moves toward an arrow A' and then toward an arrow A when the setting of the sheets 5 is over and then pinches one of both ends of each sheet 5 by the appropriate force. When the end part of the sheet 5 that is changed in a wedge shape is moved more toward the arrow B, the sheets 5 are removed one by one from a hooking member 3 and the page alignment is performed. An image input part 4 inputs the images for every sheet and synchronously with the page alignment action. An optical sensor 6 detects the presence or absence of the sheets 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet turning apparatus and an optical reading apparatus using the same, and more particularly, to a paper sheet turning apparatus for optically reading information of a large number of stacked documents and the like. The present invention relates to an optical reader used.

[0002]

2. Description of the Related Art Optical character reading devices are widely used for reading characters into various computer systems. A conventional optical character reading device has a device configuration as shown in the conceptual diagram of FIG. In FIG. 5, a plurality of forms (sheets) 5 set (stacked; stacked) on the hopper 8
Are transported one by one to a reading unit 10 by a paper feeding unit 2 composed of, for example, rollers for pressing and driving the paper sheets 5, and pass through the reading unit 10 while an image input unit (for example, a light projection unit and a light projection unit). An image input (reading) is performed by a four-dimensional optical sensor 4 that converts the reflected light from the paper sheet 5 into an electric signal. As described above, a method of moving the form (sheets) 5 is generally used as an optical character reading apparatus.

[0003]

In the conventional optical character reading apparatus shown in FIG. 5, in order to improve the processing capacity, it is essential that the conveying speed of the form (sheets) 5 be increased. Become. However, when the form 5 is a thin sheet, jamming (a phenomenon in which the form 5 cannot be fed properly and an extreme wrinkle occurs and jams somewhere) or skew (a right and left feeding of the form 5 with respect to the form 5 in the paper feeding unit 9). A phenomenon in which the paper drive balance is lost and the form 5 is sent obliquely) occurs, which lowers the transport performance, and there is a limit to the high-speed transport of the form (sheets).

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet turning apparatus capable of performing high-speed optical reading by turning pages at a high speed without conveying stacked sheets, and an optical reading apparatus using the same. is there.

[0005]

According to the present invention, there is provided a hooking member having a hook for hooking and engaging a predetermined surface of one end of a laminated sheet, and a double-sided member at the other end of the laminated sheet. And first and second pinch rollers for sandwiching the laminated sheet from the first pinch roller, and the first pinch roller is a fixed roller and provided in contact with a surface of the laminated sheet opposite to the predetermined surface. The second pinch roller is rotatable along the outer periphery of the first pinch roller,
A sheet turning apparatus is provided, in which the second pinch roller is rotated to turn over the stacked sheets.

[0006] The second pinch roller is configured to be capable of moving forward and backward with respect to the first pinch roller.

According to the present invention, it is characterized in that it comprises the above-mentioned sheet turning apparatus and reading means for optically reading the character or image information of the sheet sequentially while turning the sheet. Optical reading device is obtained.

[0008] Further, there is provided a means for sequentially detecting the turning of the paper sheet for each page, wherein the reading means reads information in synchronization with the detection timing. A means for detecting the end of all the turning of the leaves is provided, and the reading of the reading means is stopped in response to the detection timing.

The operation of the present invention is as follows. One end of the laminated sheet is sandwiched between two pinch rollers, and the other pinch roller is slowly rotated so that the laminated sheet winds around the outer periphery of one pinch roller. Depending on the thickness of the laminated sheet, the length of the circular arc wound around each sheet changes, and the other end becomes wedge-shaped. Here, the sheet is turned one by one by using a restoring force for restoring the entire sheet to the original flat state by applying a hook member thereto.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of the optical reading apparatus according to the present invention. In FIG. 1, an optical reading apparatus according to the present invention includes a stacked paper sheet 5 to be read, a pinch roller 1 on which the stacked paper sheet 5 is wound, and a pinch roller 2 for driving the paper sheet 5 to rotate. A claw-shaped hooking member 3 for engaging and hooking one end of the paper sheet 5; an image input section for detecting an image of a character or the like (for example, a light projecting section; 4), an optical sensor 6 for detecting the end of turning of all the stacked sheets, and an optical sensor 7 for detecting the turning of each stacked sheet. .

In particular, it is assumed that the optical sensor 7 is mounted in a direction perpendicular to the component mounting surface (not shown), and one end of the paper sheet 5 is disengaged from the claw portion of the hook member 3 to return to the original position. When restoring to a planar state, no interference occurs.

The surfaces of the pinch rollers 1 and 2 are preferably formed of a rubber-like elastic material having a large frictional force with the paper sheet 5 such as natural rubber, synthetic rubber, polyurethane or glue.

The operation of the embodiment of the present invention will be described with reference to FIGS. In FIG. 1, a pinch roller 1 is a fixed roller, and its outer periphery serves as a guide around which a paper sheet 5 is wound. The paper sheet 5 can swing and swing in the direction of arrow B in conjunction with the pinch roller 2 around the pinch roller 1. The pinch roller 2 is a movable roller.
It can move forward and backward with respect to the direction A ′, that is, the pinch roller 1.

When the stacked sheets 5 are set, the pinch roller 2 moves in the direction of arrow A '. When the setting is completed, the pinch roller 2 moves in the direction of arrow A to move one end of the sheets 5. It is clamped by an appropriate force (this state is shown in the plan view of FIG. 2). In addition, the pinch roller 2 has a contact surface with the paper sheet 5 so that the pinch roller 2 can swing (move / drive) around the pinch roller 1 in the direction of arrow B (see FIG. 3). The hook member 3 is for pressing the other end of the set paper sheet 5, and serves to suppress the restoring force of the paper sheet 5.

[0016] Wedge-shaped changes (as shown in FIG. 3)
When the end of the paper sheet 5 is further slowly rotated (moved) in the direction of the arrow B, the sheet is detached one by one from the claw portion of the hook member 3 (in the direction of the arrow C) and the page is revised (see FIG. 4). . The image input unit 4 synchronizes with the operation of this page,
Image input (character reading) is performed one by one. Optical sensor 6
Detects the presence or absence of the paper sheet 5 (see FIG. 4). Optical sensor 7
Is configured to detect the change each time the page is changed, and to perform the reading operation of the image input unit 4 in synchronization with the detection timing.

In FIG. 1, when the paper sheet 5 is set between the pinch rollers 1 and 2, the optical sensor 6 detects the presence of the paper sheet 5, and the pinch roller 2 moves in the direction of arrow A, Class 5 is clamped with an appropriate force. Next, the pinch rollers 1 and 2 start to swing slowly in the direction of arrow B in conjunction with the pinch roller 1, and the other end of the paper sheet 5 changes into a wedge shape as shown in FIG. Go.

On the other hand, the restoring force of the paper sheet 5 is suppressed by the guide plate 3 and the state is maintained, but as the movement in the direction of arrow B proceeds, the paper sheet 5 in contact with the guide plate 3 Then, the pages are sequentially changed one by one (see FIG. 4). Once the page is changed, the light sensor 7
And the image input unit 4 performs image input (character reading). This operation is repeated until the optical sensor 6 detects the absence of the sheet 5.

[0019]

As described above, the present invention has an effect that high-speed processing can be performed as compared with the conventional optical reading apparatus.
In other words, this is because the conventional transport mechanism has been eliminated and the renewal mechanism has been adopted for accessing the image input section of the paper sheet. In addition, there is an effect that there is no conveyance failure such as paper jam (jamming). That is, it is unnecessary to carry out the sheet conveyance operation.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a plan view (initial state) of an embodiment of the present invention.

FIG. 3 is a plan view (during operation) of the embodiment of the present invention.

FIG. 4 is a plan view (during operation) of an embodiment of the present invention.

FIG. 5 is a conceptual diagram of an example of a conventional optical reading device.

[Explanation of symbols]

 1, 2 pinch roller 3 hook member 4 image input unit 5 paper sheet 6, 7 optical sensor

Claims (5)

[Claims] 1. A hooking member having a claw that hooks and engages a predetermined surface of one end of a laminated sheet, and a second member that sandwiches the laminated sheet from both sides at the other end of the laminated sheet. First and second pinch rollers, wherein the first pinch roller is a fixed roller and is provided in contact with a surface of the laminated sheet opposite to the predetermined surface, and the second pinch roller Paper is adapted to be rotatable along the outer periphery of the first pinch roller, and to turn pages of the laminated sheets while rotating the second pinch roller. Leaf turning device. 2. The paper sheet turning device according to claim 1, wherein the second pinch roller is configured to be able to move forward and backward with respect to the first pinch roller. 3. A paper sheet turning device according to claim 1, further comprising: reading means for optically reading characters or image information of the paper sheets sequentially during the turning of the paper sheets. Optical reading device. 4. The apparatus according to claim 3, further comprising means for sequentially detecting the turning of the paper sheet for each page, and wherein said reading means reads information in synchronization with the detection timing. The optical reading device according to claim 1. 5. The apparatus according to claim 3, further comprising means for detecting the end of all the turns of the sheet, and wherein the reading means stops reading in response to the detection timing. 5. The optical reader according to 4.