JPH05162484A - Sucking type page turning device - Google Patents

Abstract

PURPOSE:To turn over the pages of a manuscript of a booklet surely by means of a simple mechanism, while two pages thereof are prevented from being carried at a time, in a sucking type page turning device wherein the pages of the manuscript are sucked by air and carried to turn over the pages. CONSTITUTION:A page B1 is sucked by a sucking pad 1, while a manuscript is pressed by a page press bar 2, and a manuscript table 3 is moved in the direction of arrow, while the bar 2 is slightly lifted. As a result, the page B1 is bent into an S-shape, whereby the page B1 is surely separated from the succeeding pages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction type page turning device applied to an automatic reader or the like.

[0002]

2. Description of the Related Art In a suction-type page-turning apparatus, it is general that an air suction apparatus is used to suck a page to be paged, move it in the page-breaking direction, and then shut off the air. FIG. 16 shows an operation explanatory diagram of a conventional page turning apparatus. In FIG. 16, 3 is a document table, B is a document table 3
A booklet document placed in an open state, B1 is a page to be changed, and 1 is a suction pad. First, as shown in (A), the end portion of the page to be changed is sucked by the suction pad 1, and then the suction pad 1 is moved so as to draw an arc in the direction of page change as shown in (B) → (C). After further moving the suction pad 1 as shown in (D), the air is shut off to release the page B1. The above operation is repeated to turn pages one by one.

[0003]

However, in such a conventional suction-type page-turning device, when a page in the horizontal state is changed in the vertical direction by the suction device, a plurality of pages are changed at once. There was a risk of being pulled up while being adsorbed and being double-fed. Therefore, as in the invention described in Japanese Patent Laid-Open No. 59-5331, a method is also proposed in which a suction device for preventing double feed is provided, both sides prevent double feed, and both move the page in the page break direction. Has been done.

However, when double feeding is prevented by using such two suction devices, the two suction devices move in the moving space of a page break, which complicates the structure of the mechanical section. However, there is a drawback that the cost is increased as a result of an increase in the size of the device due to an increase in the number of parts and a complicated manufacturing process.

An object of the present invention is to provide a small-sized and inexpensive suction-type page turning device capable of surely turning pages one by one with a simple mechanism.

[0006]

A suction-type page turning device according to the present invention comprises a document table which is movable in a horizontal direction while an open booklet document is placed, and a page end portion of the booklet document. A suction pad for adsorbing, a page pressing bar extending in a direction perpendicular to the page turning direction and pressing the substantially central portion of the page of the booklet original to be turned, and a suction pad and the page pressing bar at the start of page turning. A page vertical movement control means for bringing the suction pad up to raise the suction pad and slightly floating the page holding bar, and the suction pad and the page holding bar in the original state when the suction pad is pulled up. A page horizontal movement control means for moving the page relative to the table in the page break direction and dropping the page from the suction pad to the page break side. It becomes Te.

[0007]

In the suction-type page turning device according to the present invention,
The page pressing bar extends in a direction perpendicular to the page turning direction and presses the substantially central portion of the page of the booklet original to be turned. The page vertical movement control means brings the suction pad and the page pressing bar into contact with the page to be page-changed at the start of page turning, pulls up the suction pad, and slightly lifts the page pressing bar. Then, the page horizontal movement control means moves the suction pad and the page pressing bar relative to the document table in the page break direction with the suction pad being pulled up, and drops the page from the suction pad to the page break side. When the horizontal movement control means moves the suction pad and the page pressing bar relative to the document table in the page break direction with the suction pad being pulled up, the pressing bar moves to the page break side of the page to be changed. In order to limit the freedom of movement, the page is curved in an S-shape, which ensures that the next and subsequent pages are separated. Therefore, a double-feed preventing suction device for suction-separating the multiple-sucked pages from the back side is unnecessary.

[0008]

FIG. 13 is a block diagram showing the configurations of a control unit and an external control device of a suction type page turning apparatus according to an embodiment of the present invention. In FIG. 13, reference numeral 100 is a control unit of the page turning apparatus, 101 is a control unit 1 of the page turning apparatus.
00 is an external control device. In the control unit 100, the CPU 10 executes a program previously written in the ROM 11 to perform various controls described below. The RAM 12 is used as various working areas when executing the program. The input / output interface 13 inputs and outputs signals with the external control device 101. The various sensors 14 are sensors provided in each part of the page turning device.
Reads the status of each sensor via the interface 15. The suction device 16 is a device for sucking a page to be changed by a suction pad, and the CPU 10 performs suction control via the interface 17 at a required timing. The pad moving motor 18 is a motor for moving the suction pad up and down, and the CPU 10 controls it via the interface 19. Bar moving motor 20
Is a motor for moving the page pressing bar up and down, and the CPU 10 controls it through the interface 21. The document table moving motor 22 is a motor for moving the document table in the horizontal direction, and the CPU 10 controls the same through the interface 23.

In the external control device 101, the CPU 31
Executes a program written in advance in the ROM 31 to control the page turning device and the reading device. The RAM 32 is used as a working area at that time. The external memory 33 is used to store the read image data or the character data after recognition,
The control unit 30 controls the external memory controller 34. The input / output interface 35 controls a reading device (not shown) to control reading of a page-turned original. The input / output interface 36 inputs / outputs signals to / from the control unit 100 of the page turning apparatus. Next, FIGS. 1 to 12 show the structure and operation procedure of the suction-type page turning device.

FIG. 1 is a perspective view showing the structure of the main part of the suction type page turning device during operation. In FIG. 1, B is a booklet original, B1 is a page of the booklet original to be changed, and 3 is an original table on which the booklet original B is placed. Also, 1
Is a suction pad for sucking the page B1 to be sucked, and 2 is a page pressing bar for pressing the central portion of the page B1.

2 to 12 are views showing each step in turning a page, in which (A) is a schematic front view,
(B) is a schematic right side view. The operation procedure of page turning will be described below with reference to FIGS.

First, as shown in FIG. 2, with the document table 3 in the initial position (hereinafter referred to as the home position) and the booklet document B is placed, the suction pad 1 is near the edge of the page B1 to be page-changed. And the page pressing bar 2 is located above the substantially central portion of the page B1. From this state
As shown in FIG. 5, the suction pad 1 is vertically lowered and brought into contact with the original. Then, as shown in FIG. 4, the page pressing bar 2 is vertically lowered and brought into contact with the original. Then, suction force is applied to the suction pad 1 to raise the suction pad 1 to a certain height as shown in FIGS. 1 (A) and 5. Subsequently, as shown in FIG. 6, the page pressing bar 2 is raised to a constant height. The height of the page pressing bar 2 is smaller than that of the suction pad 1. afterwards,
As shown in FIGS. 7 and 1B, the document table 3 is moved to the right in FIG. At this time, due to the existence of the page pressing bar 2, the page B1 to be changed
Bends into an S shape. Therefore, even when the second and subsequent pages are multiple-sucked on the back side of the page B1, the second and subsequent pages sucked on the suction pad 1 are separated from the suction pad 1 in the separating direction. A large force acts to reliably separate the second and subsequent pages from the suction pad 1. Further, as shown in FIGS.
If is moved, the page B1 to be paged is moved away from the page pressing bar 2 and relatively moved in the page-breaking direction. Then, as shown in FIG. 11, the suction of the suction pad 1 is stopped and the page B1 is opened. As a result, as shown in FIG. 12, the page B1 is completely changed. After that, the document table 3 is moved to the home position as shown in FIG. 2 to prepare for the next page turning operation.

Next, a processing procedure of the page turning apparatus is shown in FIG. 14 as a flowchart. First, it waits for a control signal to be input from the external control device (n1). If the document detection command is given, the sensor searches whether or not the booklet document is placed on the document table, and outputs the result to the external control device (n2 → n3 → n4). If the input control signal is a command to lower the suction pad and the page pressing bar, the suction pad is lowered until it comes into contact with the document (n5 → n6).
→ n7 → n6 ...). Then, lower the page pressure bar until it touches the document (n8 → n9 → n8 ...
・). When these processes are completed, a completion signal is output to the external control device (n10). If the input control signal is the suction command of the suction pad, the suction device is operated to raise the suction pad to a certain height (n11 → n12 → n1).
3). Then, the page pressing bar is raised to a certain height and a completion signal is output (n14 → n15). If the input control signal is a document table movement command, as shown in FIG.
The document table is moved to a position where pages can be separated (n16 → n17 → n18 → n17 ...). After that, the platen is stopped and a completion signal is output (n19 → n
20). If the input control signal is a page release command, the suction device is stopped, the page is released from the suction pad, and a completion signal is output (n21 → n22 → n23).
If the input control signal is a platen return command, the platen is moved until it reaches the position (n24 → n25).
→ n26 → n25 ...). After that, the platen is stopped and a completion signal is output (n27 → n28).

Next, a processing procedure of the external control device 101 is shown in FIG. 15 as a flowchart.

First, the platen is returned to the home position to initialize it (n30). After that, a document detection command is given to the control unit of the page turning apparatus and the document is waited for to be placed (n31 → n32 → n31 ...).
When the document is placed, a command to lower the suction pad and the page pressing bar is given (n33). If there is a response of the completion signal from the page turning device, then a suction command for the suction pad is given (n34). As a result, the state shown in FIGS. 5 and 6 is obtained. Then, a document table movement command is given (n3
5). This changes the state as shown in FIGS. 7 to 10, and finally gives an opening command (n36). This completes the page break as shown in FIGS. 11 and 12. By repeating the above operation, page turning is performed one page at a time.

In the embodiment, the height at which the page pressing bar 2 is lifted from the original is fixed and the original platen is returned to the home position at that height. However, when the original plate is returned, the page pressing bar 2 is returned. May be moved further upward. In the embodiment, the document table is moved while the suction pad is sucking the page to be changed, and the suction of the suction pad is stopped when the movement is completed, but the suction of the suction pad is stopped. After that, the document table may be further moved in the same direction, or the suction by the suction pad may be stopped during the movement of the document table.

[0017]

According to the present invention, the suction device for preventing the double feed from sucking the second and subsequent pages out of a plurality of pages sucked by the suction pad is unnecessary, and the entire moving mechanism and movement control are possible. It is possible to reduce the price and downsize the device.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part in an operating state of a suction type page turning device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an operation procedure of a suction-type page turning device.

FIG. 3 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 4 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 5 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 6 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 7 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 8 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 9 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 10 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 11 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 12 is a diagram showing an operation procedure of the suction-type page turning device.

FIG. 13 is a block diagram showing a configuration of a control unit of the suction-type page turning device and a configuration of an external control device.

FIG. 14 is a flowchart illustrating a processing procedure of a control unit of the suction-type page turning device.

FIG. 15 is a flowchart showing a processing procedure of an external control device.

FIG. 16 is a diagram showing an operation procedure of a conventional suction-type page turning device.

[Explanation of symbols]

 B booklet manuscript B1 page of booklet manuscript to be page-changed 1 suction pad 2 page holding bar 3 manuscript table 100 control unit of page turning device 101 external control device

Claims (1)

[Claims] 1. A document table which is movable in a horizontal direction while holding a booklet document in an open state, a suction pad which sucks the vicinity of a page end of the booklet document, and a direction perpendicular to the page turning direction. A page pressing bar that extends and presses the substantially central portion of the page to be changed in the booklet document, and the suction pad and the page pressing bar are brought into contact with the page to be changed at the time of starting page turning, and the suction is performed. A page vertical movement control means for pulling up the pad and slightly floating the page pressing bar; and moving the suction pad and the page pressing bar relative to the document table in the page break direction with the suction pad raised. A suction-type page turning device comprising a page horizontal movement control means for dropping a page from a suction pad to the page break side.