JPH01288545A - Original transporting device - Google Patents

Abstract

PURPOSE:To simplify the structure of a releasing means by releasing a lock means which holds an original guide means at a closing position for a transport means through releasing means which is interlocked by the drive in the direction different from the original transport direction of a driving means. CONSTITUTION:In case of a sheet-shaped original, the transport means 13 of an original transport device 1 contacts the transport means 19, 20, and 33, with a hook 51 engaged with a hook pin 55, and an original is transported by the transport means, and read out by an optical system 3. In case of a book- shaped original, a releasing button in an operation part is pushed, and the transport means 19 and 20 are driven in the reverse direction for a prescribed time, and each revolution of the shafts 19a and 20a is transmitted to the hook 51 through a unidirectional clutch, and the engagement with the hook pin 55 is released, and a guide means 13 is separated in parallel from the transport means 19, 20, and 33. In this state, a transport sheet is pulled out from a taking-up roller onto an original board 12, and the book-shaped original is placed, and the transport sheet is taken up, and the original is read out. Thus, the structure of the releasing means of a locking means can be made simple.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a general document feeding device used in image processing devices such as copying machines, facsimile machines, document reading devices, etc. The present invention relates to a document conveying device capable of conveying a type of document.

(B) Prior Art Conventionally, document conveying devices have been devised that convey sheet-like and three-dimensional documents using the same conveying means.

The document conveying device j' is disposed in the document reading device 2', as shown in FIGS. 10 and 11, for example. The document reading device 2' has a body 5 incorporating an image reading section 3, which includes a platen 6, a rale 7, a mirror 9, and a lens provided on the top surface of the body 5. 0
, and a light receiving element 11. Further, the document reading device 2' has a document table 12 constituted by the upper part of the body 5, and the document conveying device 1' is disposed downstream of the document table 12 in the direction of conveying the original f#i. . Further, the document conveying device 1' is provided with a guide unit 1.1.3' which is rotatably supported by the body 5.
A paper feed roller 15 and conveyance rollers 16 and 17 are arranged. Then, on the machine body 5 side (this means that when the unit 13' is closed at a position along the machine body 5, a conveyance roller 19 is disposed without being paired with the conveyance roller 16, and A transport roller 20 is disposed in a pair with the roller 17□ 2. Further, downstream of the roller 20 (here, a roller 21 inclined to the body 5,
22 is carved, and when the base end of the paper discharge tray 23 is fitted into the groove 21, the tray 23 is moved to the inclined position A.
It is now supported as l. Furthermore, the tray 23
A support i15 is arranged on the back surface of the support plate 25.
The paper discharge tray 23 is supported at a horizontal position B by fitting the paper into the groove 22. Moreover, between these grooves 21 and 22, a transparent flexible conveying sheet 24 is provided.
A take-up roller 26 is provided that winds the sheet 24 and is connected to a drive means (not shown) via a helical clutch, and a pan 1-rule 27 and a pressure bonding plate 29 are provided at the tip of the sheet 24. The handle 27 and the pressure bonding plate 29 can be stored in a non-document accumulation portion of the sheet discharge tray 23.

When a sheet-like document is read by the document reading device 2', the operator moves the document guide I-13' to the closed position (see FIG. 10) on the machine body 5 and closes it using a locking means (not shown). Hold position C and eject paper 1
・Insert the proximal end of the I-eye 23 into the
- Support the ray 23 at the inclined position A.

As a result, the conveyance roller 16 comes into pressure contact with the conveyance roller 19, and the conveyance roller 17 comes into pressure contact with the conveyance roller 20.Then, a sheet-shaped document is placed on the document table 12, and as shown in the figure. When the start key is pressed, the paper feed roller 15 starts rotating and feeds the document on the document table 12 to the transport roller pair]6.19. ) 1.6, 19 and conveyed to a pair of conveyance rollers 17.20. At this time, the original is exposed to light by the rasive 7, and the image of the original is sent to the light receiving element via the mirror 9 and the rasive 0. The image is focused on one frame.Then,
The document (j is held between the pair of transport rollers 17.20 and
- Ejected to paper tray 23.

In addition, when reading a three-dimensional document, the reader releases the locking means (both not shown) by the release means and moves the guide unit 13' to the released position away from the body 5. The support plate 2 of the paper output tray 23
5 into the groove 22, and perform the steps 1.1.・Move A23 to horizontal position B
Move and support. Furthermore, O. (Rake) pulls out the conveyance sheet 1-24 from the take-up roller 26 by grasping the handle 27 and pulls out the document table 2, places the three-dimensional document on the conveyance sheet 24, and presses it onto the pressure bonding plate 29. When the start key is pressed, the take-up roller 26 starts rotating, and the conveyance sheet 24 is pushed onto the sheet 24.
It is gradually wound up. As a result, the conveyance sheet 24
moves toward the roller 26, and the documents placed on the sheets 1-24 also move together with the transport sheets 1-24.

Then, when the document passes through the platen tray 6''2, the image of the document is read by the same operation as described above, and the document is further taken up by the take-up roller 26. 24 to the vicinity of the paper ejection tray 23.

←→ No matter how much the invention tries to solve the problem, the above-mentioned document conveying device 1' is difficult to operate when the guide unit 13' provided with the operation section is located at the release position because the operation section is oriented sideways. , then move the guide unit j・13' parallel to the conveying means.Although a red support unit has been considered, the one shown in the second example requires multiple locking means, and the guide units (1 to 13)
’ to the release position, it is necessary to release these multiple locking means at the same time, so the structure of the releasing means becomes multiple, and the number of parts and assembly man-hours increase (7). This has the disadvantage that the operability and reliability of the device are reduced.

Therefore, the present invention drives the release means by a drive means,
The object of the present invention is to provide a document conveying device that solves the above-mentioned problems.

0 Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances. For example, if FIGS. [1,6,17,]9.20,33
] and the conveyance means (16, 17° 19. 20, 331
a driving means (59) for driving the transport means (16,
17, 19, 20, 33), and a guide means (13) movable to a closed position in contact with the ship speed means (16° 17. (13) is in the closed position when the guide means (
13), a locking means (51) for holding the guide means (13) in the closed position, and releasing means (19a, 20a) for releasing the locking means (51) when moving the guide means (13) to the released position. In the document conveyance device (G), the release means (19a, 20a) is configured to release the lock means (51) by driving the drive means (59) in a direction different from the document conveyance direction. It is characterized by this.

(e) Operation Based on the above-mentioned configuration, the document is guided by the guide means (13) located at the guide position, and the document is conveyed by the conveying means (16° 17. 19, 20, 3) driven by the driving means (59).
3). At this time, the guide means (13) is held in the closed position by the lock means (5]). Also,
When transporting a book original, the drive means (59) is driven in a direction different from the original transport direction to release the release means (], 9a, 2.
01() to release the locking means (51) and move the guide means (13) to the release position.

(F) Examples Examples of the present invention will be described below with reference to the drawings.

Note that the same parts as those described above are given the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 2 and 3, the document conveying device 1 has a paper feed roller 30 on the machine body 5 side, and is connected to the machine body 5 via an arm 28 to be moved between the closed position C and the released position. It has a guy 1-unit 13 that is movable to different positions. Further, a handling plate 3J for handling the leading edge of the document M is provided at a position opposite to the roller 30 on the guide unit ν1/13 side. -c1 A document presence/absence sensor 32 for detecting the presence or absence of a document M is disposed downstream of the roller 30, and downstream of the sensor 32, a conveyance roller 33 is placed on the machine body 5 side, and a conveyance roller 33 is placed on the guide unit 13 side. A separation pad 35 is provided, and when the unit 13 is in the closed position C, the roller 3
3 and the pad 35 are in pressure contact with each other.

Furthermore, a document presence/absence sensor 36 for detecting the presence or absence of a document M is arranged downstream of the conveyance roller 19, and furthermore, an operation key 39- and a display section 40 are provided on the operation board 37 on the guide cornice 1-13. is installed to form the operation section.

As shown in detail in FIGS. 1 and 4, the arm 28 has a pulley portion 28 integrally formed at its base end.
a, and the pulley portion 28a is rotatable (supported by a pulley 42 fixed to the fuselage frame 5a constituting the fuselage 5 with a screw 41. Also, the arm 28
A shaft 43 is fixed to the tip of the ga,
The unit 13 is supported via a pulley 45 fixed to the idle unit 13. these boos 1
A toothed bell 1-44 is wound around J42 and 45,
Also, a stopper pin 4 provided on the arm 28 and the body 5
6 and a spring 47 is compressed.

The paper discharge tray 23 has a boob 1 part 23a at its base end, and the boob part 23a is rotatably supported by a pin 49 to the machine frame 5tI. (see figure). Further, a toothed belt 50 is wound around the pulley portion 23a and the boolean portion 28a. Furthermore, the shaft 19a of the conveyance roller 19 and the conveyance roller 20
A hook 51 having one end 51a having a fused shape is supported on the shaft 20a via a one-way clutch, and the other end 51b of the hook 51 has one end fixed to the fuselage frame 5 and the hook 51 is It is fixed to a spring 52 that biases the hook 51 to swing clockwise, and a stopper 53 that restricts the swing of the hook 51 is provided near the other end 51b. A book bin 55 is provided at a position opposite to the hook 51 of the unit 13, and when the unit 13 is in the closed position C, the book bin 55 It becomes engaged with -C. Note that the reference numeral 56 in the figure is a sensor for detecting opening and closing of the guide unit 13.

Further, as shown in FIG. 6, the document reading device 2 has a control section 57, and on the input side of the control section 570, the light receiving element 11, document presence/absence sensor 32.degree. 36, sensor 56, etc. are installed. A drive motor 59 for driving each part, a lamp 7, etc. are connected to the output side.

Accordingly, the operation of this embodiment will be explained with reference to flowchart 1 in FIGS. 7 and 8.

When reading a three-dimensional original M, the operator presses a release button (both not shown) on the operation section of the image reading device 2 (Sl). Then, the control unit 57 that receives the ON signal of the button determines whether the sensor 56 is ON or not, that is, whether the guide unit 13 is in the closed position C (S2).
If it is determined that the drive motor 59 is ON, the drive motor 59 is rotated in the reverse direction for a predetermined step
20 clockwise (S3). This allows axis 1
9a, 20a rotate clockwise, and these shafts 19a, 2
The rotation of 0a is transmitted to the hook 51 by the one-way clutch in the connected state, and the hook 51 also swings clockwise (see FIG. 3).

Then, when the engagement between the hook 5'' and the hook bin 55 is released, the arm 28 is attached to the spring 47 and the spring 42 is released.
Rotate counterclockwise around j7, stopper pin 46
It comes into contact with and stops (see tut in Figure 9).

At this time, the toothed belt 44 wound around the pulleys 42 and 45 rotates, and if the number of teeth of the pulleys 42 and 45 is the same, the guide unit 13 is spaced apart by the body 5 and is approximately horizontal. held in the released position.

In addition, when the number of teeth of the pulley 45 is Zl and the number of teeth of 7°-IJ 42 is Z, and Zl>Z2, the guide unit J・13 is inclined downward on the left side, and 2. If <2□, there is a guide unit. On the other hand, the paper holding tray 23 is connected to the arm 28's one-edge section 28a and the paper output tray 23's boot section 23a.
A toothed bell wrapped around!・J Rearm 2 on 50
It is supported at horizontal position 13 in conjunction with 8 rotations.

Note that the inclination angle of the paper discharge tray 23 can be changed by the combination of the number of teeth of the pulley portions 28a and 23a. (7) When the drive motor 59 stops, the hook 51
tries to rotate counterclockwise due to the biasing force of the spring 52, but since the one-way clutch is in the engaged state, the tip 51
Keep a tilted to the right. Then, the control unit 57 detects the stop of the morph 59, and the sensor 56 is activated.
Judgment L (S4) as to whether or not it is in the FI* state. If it is determined that it is in the OFF state, the drive motor 59 is rotated for a predetermined step Y, that is, the hook 51 is returned to its original position [ζ for a period of time without returning to the transport roller 1.9.20 Rotate forward in the direction of counterclockwise rotation (
S5). Then, the operator grips the handle 27 and presses 1rj+! [Sea 1-24'. e The document table 12 is pulled out from the take-up roller 26, and the three-dimensional document M is placed on the transport sheet 24 in the portion located on the document table 12 with the image side facing down. Then, the 10-color pressure bonding plate 29 provided at the tip of the transport seat 1 24 is placed on the document M, and the image surface of the document M is pressed onto the transport seat 1-24 (FIG. 9()).
))reference). Furthermore, the operator presses a rewind switch (not shown) for rewinding the conveyance sheet 24. In response to this, the take-up roller 26 starts rotating and the conveyance sheet 1. 24 starts, the original fAM moves together with the sheet 24, and when the document M is detected by the document presence/absence sensor 32, the take-up roller 26 temporarily stops and enters a standby state. Note that at this time, the paper feed roller 30 and the υ transport rollers 33, 19, 20 rotate counterclockwise, but this does not pose a problem since the direction is the same as the moving direction of the transport sheet 24. In this state, when the start switch (not shown) on the guide uni soto 13 is pressed, the control unit 57 receives the ON signal from the start and isoji and from the sensor 56. The three-dimensional original mode is entered based on the OFF signal. Then, the control unit 57 restarts the winding roller 26 to resume winding the conveyance sheet 24, and when the leading edge of the document M is detected by the document presence sensor 36,
The drive motor 59 is driven by a predetermined number of steps, that is, the number of steps corresponding to the general feeding distance of the document M toward the platen 6. Then, the original 14% M is transported to the platen 6 and exposed by the lamp 7, the exposed light is reflected by the ξ sheet 9, and further imaged onto the light receiving element 11 by the lens 10.

When the trailing edge of the document M is detected by the document presence/absence sensor 36, the control unit 57 that receives the detection signal from the sender 36 drives the drive motor 59 a predetermined number of steps, i.e., when the trailing edge of the document M is detected by the platen 6. drive a sufficient number of steps to reach the reading position.

Then, when the rear end of the document M passes the reading position and a predetermined number of steps are completed, the drive motor 59 stops and the take-up roller 26 also stops. Further, the sub-pellet takes out the document M from the transport sheet 24 (7) presses the rewind switch to wind up the transport sheet 24, and then presses the handle 27.
When the pressure bonding plate 29 is stored in the discharge paper 1.v i 23, the reading operation of the three-dimensional original M is completed.

Accordingly, when reading a sheet-like original M, operator A pushes down the guide unit 1-13 by hand. In case of
The paper discharge tray 23 moves from the horizontal position B to the inclined position A by the same operation as described above. Further, as the guide unit 13 moves from the released position to the closed position C, the hook pin 55 is moved to the tip 51. of the hook 51. By pressing the inclined part of a), the claw 51 is biased to swing clockwise,
Since the biasing direction is one-way and the idle rotation direction of the launch, it swings by the amount pushed by the hook pin 55. And the hook 5
5 is the biasing force of the spring 52 (it tries to return from this, but since this is the direction in which the one-way clutch is connected, the hook 55 will not return counterclockwise. At the time of B, the guide unit 13 is located at the closed position C). (The sensor 56 is ONL, (
86) , said-II! :/ -'j56 (+) O
The control unit 57 that receives the N signal rotates the drive motor 59 in the normal direction and rotates the transport rollers 1, 9, 20ti? It rotates by a predetermined step Z in the counterclockwise rotation direction (S7).

As a result, the shafts 19a and 20 of the first general feed rollers 19 and 20
a rotates once in the counterclockwise direction, and the rotation of these shafts 19a and 20a is coupled to their respective one-way clutches (in the idling direction), so that the hook 51, which is biased in the counterclockwise direction by the lever spring 52, rotates counterclockwise. Then, the sheet-shaped original M is placed on the original platen 12, the start key (not shown) is pressed, and the original presence/absence sensor 32 is moved to the original platen. When the document M on the sensor 12 is detected, the control MI5 receives a detection signal from the sensor 32.
7 rotates the drive motor 59 in the normal direction. Then, the motor 5
9, each roller 30, 33.degree. 19.20 starts rotating, and the document M on the document table 12'' is fed to the conveying roller 33 by the paper feed roller 30. Further, the originals M are separated one by one by the roller 33 and the separation pad 35, and only the lowest original M is transported. The document M is then conveyed to the platelet 6 while being held between conveyance rollers 16 and 19, and its image is read by the same operation as described above.

Then, the original fj%M is held between a pair of conveying rollers 17 and 20 and is discharged to the discharge sheet 1-L-I 23.

(g) As described in detail, according to the present invention, the releasing means is configured to release the locking means when the driving means is driven in a direction different from the document conveying direction, so that the special driving The structure of the release means can be simplified without requiring a device, and the number of parts and assembly man-hours can be reduced to reduce costs.

[Brief explanation of the drawing]

FIGS. 1 to 3 are front cross-sectional views showing the document conveying device according to the present invention. FIGS. 4 and 5 are cross-sectional views showing essential parts of the document conveying device according to the present invention. 6 is a diagram showing a controller according to an embodiment of the present invention. FIG.
This is a diagram. FIG. 7 and FIG. 8 are flowchart 1 showing the operation of the present invention. Also, Figure 9 ta+
, +b+ are front sectional views showing the operation of the present invention. Further, FIGS. 10 and 11 are front sectional views showing a conventional example. ], 1' Original transport device, ]3. 3' Guide means: I6, 17, 19, 20, 33 Conveying means
, ], 9a, 20a release means, 23 original discharge table, 23a, 2B, 28n. 42.43,44,45,50 means of transportation, 51
Locking means, 59 Driving means.

Claims (1)

[Scope of Claims] 1. A conveyance means for conveying a document, a driving means for driving the conveyance means, and a guide means movable between a closed position in contact with the conveyance means and an open position separated from the conveyance means. and locking means for holding the guide means in the closed position when the guide means is in the closed position, and release means for releasing the lock means when moving the guide means to the release position. What is claimed is: 1. A document conveying device according to claim 1, wherein the unlocking device is configured to release the locking device by driving the driving device in a direction different from the document conveying direction.