JPH01288544A - Original transporting device - Google Patents

Abstract

PURPOSE:To easily guide a book-shaped original by installing a guide means which can shift between a guide position attached onto an original transport means and a separated release position and installing a parallel shift mechanism which is shifted nearly in parallel to the transport means. CONSTITUTION:In case of a three-dimensional (book-shaped) original M, the engagement of a hook 51 is released by revolving the transport rollers 19 and 20 for a prescribed time, and then an arm 28 is revolved in the counterclockwise direction around a pulley 42 by a spring 47, and contacts a stopper 46, and at this time, a guide unit 13 is separated in parallel through a toothed belt 44 and a pulley 45, and is held at the release position D. Then, a transported sheet 24 is pulled out to an original board 12 from a taking-up roller 26, and the original M is placed, and the transport sheet 24 is rewound in the pressed state by a pressing plate 29 at the edge part, and read-out is performed by an image reading-out part 3. In case of a sheet-shaped original, a guide unit 13 is lowered by hands, and the hook 51 is engaged, and attached onto the transport means 19, 20 and 30. Therefore, the reading-out of the book-shaped original can be easily carried out.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a document conveying device used in an image processing device such as a copying machine, a facsimile machine, and a document reading device, and more specifically, the present invention relates to a document conveying device used in an image processing device such as a copying machine, a facsimile machine, and a document reading device. The present invention relates to a document conveying device that includes a guide means that is movable between a position and a separated release position.

(B) Prior Art Conventionally, a document conveyance device has been devised which includes a guide means that is movable between a guide position in contact with the conveyance means and a release position separated from the conveyance means. The document conveying device 1' is disposed in a 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, and the image reading section 3 includes a platen 6, a lamp 7, a mirror 9,
It is composed of a lens 10 and a light receiving element 11. In addition, the document reading/accepting device M2' is connected to a document table 1 formed by the upper part of the machine body 5.
2, and the document conveyance device 1' is disposed downstream of the document table 12 in the document conveyance direction.

Further, the document conveyance device 1' is provided with a guide unit l-13' rotatably supported by the body 5, and the unit 13' includes a paper feed roller 15 and (fastest roller 16, 17 is disposed on the machine body 5 side. When the Unisol l-13' is closed to the fixed position on the machine body 5, a conveyance roller 1 is provided which pairs with the conveyance roller 16.
9 are disposed, and a conveyance roller 20 forming a pair with the conveyance roller 17 is also disposed. In addition, the roller 2
0, inclined grooves 21 and 22 are carved in the machine body 5, and when the base end of the paper ejection tray 23 is inserted into the groove 2'', the tray 23 is moved to the inclined position A. Furthermore, a support plate 25 is disposed on the back surface of the 1.
By fitting the paper output tray 23 into the horizontal position B
It seems that it will be supported by In addition, these grooves 2],
A transparent flexible transport sheet 24 is wound therebetween, and an L-roller 26 is arranged, which is connected to a driving means (not shown) via a heli clutch. A pandle 27 and a pressure plate 29 are provided at the leading end of the sheet 24, and the handle 27 and pressure plate 29 can be stored in the non-document accumulation area of the discharge sheet 1/I/423. The sea urchin is turning.

When the document reading device 2' is used to read a document in the shape of 1.5 mm, the operator moves the guide unit (13') to the closed position (see FIG. 10) on the machine body 5, The base end of the tray 23 is fitted into the groove 21 and the steps 1.1.
・Support A 23 at the inclined position A.

As a result, the conveyance roller 16 comes into pressure contact with the first general feed roller 19, and the conveyance roller 7 comes into pressure contact with the conveyance roller 20. When a sheet-shaped original is placed on the document table 12 and a star (not shown) key is pressed, the paper feed roller 15 starts rotating and transports the original FA on the document table 2. -Ra vs. 16°] Feeding to 9. Furthermore,
The document: 1.6. ] 9 and transported to a pair of transport rollers 17 and 20. At this time, the original is exposed to light by the laser beam 7, and an image of the original is formed on the light receiving element 11 via the mirror 9 and the lens 10. Then,
The document is held between a pair of transport rollers 17 and 2.0 and is discharged to a paper discharge tray 23.

When reading a small, three-dimensional original, use Operation 1.・-ta is
The guide unit 13' is moved to the release position away from the machine body 5, and the support plate 25 of the paper output tray 23 is moved to the groove 22.
1.Move and support the part 23 to position B. Furthermore, in the evening, the conveyor belts 1 and 24 are pulled out from the take-up roller 26 by grasping the handle 27 (3-) and placed on the document table 12, and a three-dimensional document is placed on the conveyor sheet 24. Then, the document is pressed onto the sheet 24 by the pressing plate 29. Then, when the start key is pressed, the take-up 1 coke 26 starts rotating and the conveyor sheet 24
is gradually wound up around the roller 26. As a result, the conveyance sheet 24 moves toward the roller 26, and the document placed on the sheet 24 also moves together with the conveyance sheet 1-24. Then, when the document passes over the platen 6, the image of the document is read by the same operation as described above,
Furthermore, the document is conveyed to the vicinity of the discharge sheet 1-ray 23 by conveyance sheets 1 to 24 which are wound up by a winding roller 26.

←→ Problem to be Solved by the Invention By the way, in the above-mentioned document conveyance device 1', when the guide unit I-13' is located at the release position, the height I4 is sufficient to convey a book-shaped document. For this reason, the device has the drawback that it requires at least one space downstream of the portion where the guide units 1 to 13' come into contact, resulting in an increase in size.

When an operating section is provided on the guide unit 13', there is a drawback that the operating section is oriented sideways and is difficult to operate.

Therefore, the present invention (a mechanism for guiding means) is proposed.
It is an object of the present invention to provide a document conveying device that moves and supports parallel to the G feeding means, thereby solving the above-mentioned problems.

(c) Means for solving the problems The present invention has been made in view of the above-mentioned circumstances, and for example, referring to FIGS. ．．．１７．】 ９．２０゜３
3) Means, the conveyance means (]6.] 7.] 9゜20
．． 33), the guide means (13) is movable to a guide position in contact with the transport means and a release position spaced apart from the transport means. (16°17.19,20,33
) parallel movement mechanism (28,
, 4, 2, 43, 44° 45).

01',) Operation Based on the above-described configuration, the document is guided by the guide means (13) located at the guide position, and the document is guided by the conveyor means (1, 6,
1, 7, 1, 9, 20, 33). In addition, when transporting a book document, the operator must use the guide means (
13) to the release position. At this time, the guide means (13
) is moved approximately parallel to the conveyance means (16, 17, 1, 9, 20, 33) by the parallel movement mechanism (28, 42, 43, 44, 45).

(F) Embodiments Hereinafter, embodiments of the present invention will be described 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. 1 and 2, the document conveyance device has a paper feed roller 30 on the body 5 side, and is connected to the body 5 via an arm 28 that constitutes a link mechanism. Guide unit that can be moved freely between closed position C and open position!・
It has 13. Further, a handling plate 3 for handling the leading edge of the document M is provided at a position opposite to the roller 30 on the guide unit 1-13 side. A document presence/absence sensor 32 is provided downstream of the roller 30 to detect the presence or absence of the document M. A separation hatch 35 is disposed on the unit 13 side, and when the unit 13 is closed, it is in position C.
When the roller 33 and the pad 35 are located at , the roller 33 and the pad 35 come into pressure contact.

Furthermore, a document presence/absence sensor 36 for detecting the presence or absence of a document M is disposed downstream of the conveyance roller 19. Furthermore, the guy 1-unit 13 has an operation key 39 on an operation board 37 and a display section 40. is installed to form the operation section.

As shown in detail in FIGS. 3 and 4, the arm 28 has a pulley portion 28a integrally molded at its base end, and the pulley portion 28n constitutes the fuselage 5. The sliding body is rotatably supported by a pulley 42 fixed to the arm 5a by a bolt 4. Further, a shaft 43 is fixed to the tip of the arm 28, and the shaft 43 supports the unit 13 via a pulley 45 fixed to the guide unit]3. A toothed belt 44 is wound around these pulleys 42 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 pulley portion 23a at its base end, and the pulley portion 23a is rotatably supported by a pin 49 to the machine frame 5a (fifth
(see figure). Further, the pulley portion 23a and the pulley portion 28
A toothed belt 50 is wound around a. Further, the shaft 19a of the transport roller 19 and the shaft 2 of the transport roller 20
0a, a hook 51 whose one end 51a is fused is supported via a one-way clutch, and the other end 51 of the hook 51 is supported via a one-way clutch.
] b has one end fixed to the body frame 5 and is fixed to a spring 52 that urges the hook 51 to swing counterclockwise, and is close to the other end 51 b to restrict the swing of the hook 51. A stopper 53 is provided. A hook pin 55 is provided at a position opposite to the hook 51 of the guide unit 13, and the hook pin J55 is connected to the hook pin 55 when the unit 1-13 is in the closed position C (when the unit 1-13 is in the closed position C). It is designed to engage.In addition, 5 in the figure
6 is a sensor that detects opening and closing of the guide unit 1-13.

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 57, the light receiving element 11, document presence/absence sensor 32, sensor 56, etc. are connected to each other, and a drive morph 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 document 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), and if the sensor 56 is determined to be ON, The drive motor 59 is rotated in the reverse direction for a predetermined step
0 clockwise (S3). This allows axis 1.
9a, 20a rotate clockwise, these axes 1.9a
, 20a is transmitted to the hook 51 by the one-way clutch in the connected state, and the hook 516 swings clockwise (see FIG. 3).

Then, when the hook 51 and the hook pin 55 are disengaged, the arm 28 (Y, spring 47)
2@Rotate counterclockwise around the center and press Soba Pin 4
6 and stops (see Fig. 9 (al)). At this time,
When the toothed belt 44 wound around the pulleys 42 and 45 rotates, and the number of teeth on the pulleys 42 and 45 is the same, the guide units 1 to 13 are spaced apart from the body 5 and released approximately horizontally. held in position.

Note that if the number of teeth teZ1 of the pulley 45 and the number of teeth of the pulley 42 are different from Z2, then 2. >22, Guy j: Unisoto 13 slopes down on the left side, 2. If <22, guide unit! , 13 is on the right side (it is also possible to shift the paper in this direction. On the other hand, the paper discharge tray 23 is wound around the saw part 28a of the arm 28 and the saw part 23c of the paper discharge j・1 noi 23. Toothed bell j.50: Supported in horizontal position B in conjunction with rotation of rear arm 28

Note that the inclination angle of the paper discharge 1-v-i 23 can be changed by combining the number of teeth of the pulley portions 28n and 23a. When the drive motor 59 stops, the hook 5 is rotated counterclockwise due to the biasing force of the spring 52, but since the one-way clutch is in the connected state,
The tip 51a is held tilted to the right. after that,
The stop control unit 57 detects the second stop of the motor 59.
If it is determined that the switch 56 is in the OFF state or not, the drive motor 59 is operated for a predetermined step Y, that is, for a time without returning the hook 51 to its original position (feeding roller 1 .9 and 20 are rotated forward in the direction of counterclockwise rotation (S5).Then, in operation 1... - 24 is rotated by the winding roller 26. Then, the document table 12 is pulled out, and the three-dimensional document M is placed on the conveyance sheet 24 in the portion located on the document table 12 with the image side facing down. Then, the pressure bonding plate 29 provided at the leading end of the transport sheet 24 is placed on the document M, and the image surface of the document M is pressed onto the transport sheet 24 (see FIG. 9).
(see bl).

Furthermore, the operator presses a rewind switch (not shown) for rewinding the conveyance sheet 24. As a result, the take-up roller 26 starts rotating and starts winding up the transport sheet 24, and the document M moves together with the sheet 24. When the document M is detected by the document presence 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 conveyance rollers 33, 19, and 20 rotate counterclockwise, but this is not a problem because the direction is the same as the moving direction of the conveyance sheath j.24. When the start switch (not shown) on the guide unit 13 is pressed in the state shown in FIG.
Based on the FF signal, enters the vertical original mode. Then, the control unit 57 activates the winding roller 26 again to restart the winding of the transport i, -1-24, and the leading edge of the document M reaches the document presence/absence mark.

When the sensor 36 detects this, the drive motor 59 is driven by a predetermined number of steps, that is, the number of steps corresponding to the distance to convey the document M to the planar J6. Then, the manuscript M is
It is transported to a platen 6, exposed by a lamp 7, the exposed light is reflected by a mirror 9, and further 1.・An image is formed on the light receiving element]1 by the lens]0. Then, when the trailing edge of the document M is detected by the document presence/absence sensor 36, the sensor →
The control unit 57 receives the detection signal from the platen 6 and drives the drive motor 59 for a predetermined number of steps l! drive. Then, when the trailing edge of the document M passes the reading position and a predetermined number of steps have been completed, the drive motor 5
9 stops, and the take-up roller 26 also stops. Furthermore, in the evening of the operation, the original M is taken out from the transport sheet 24, the rewind switch is pressed to wind up the transport sheet 24, and the handle 27 and pressure bonding plate 29 are stored in the paper output tray 23, and the three-dimensional original M is removed. The reading operation is completed.

Accordingly, when reading a sheet-like original M, the operator should push down the guide unit 13 by hand. At the time of paper ejection, the paper ray 23 is moved from the horizontal position B to the inclined position A by the same operation as described above. Further, when the guide unit 13 is moved from the released position to the closed position C [11], the hook pin 55 pushes the inclined part of the tip 51a of the hook 51, and the hook 51 is urged to swing clockwise. , since the biasing direction is the idling direction of the one-way clutch, the hook pin 5
It oscillates by the amount that is pressed by 5L. And the hook 55
tries to return due to the biasing force of the spring 52, but since this is the direction in which the one-way clutch is connected, the hook 55 will not return counterclockwise. At this time, since the gas and light unit 1-13 are located in the closed position C, the senna 56 is turned on and S6
), the control unit 57 that receives the ON signal of the sensor 56,
While the drive motor 59 is rotated forward, the conveyance rollers 19 and 20 are rotated by a predetermined step Z in a counterclockwise direction (S7). As a result, the shafts 1.9a and 20a of the conveyance rollers 1.9 and 20 rotate counterclockwise, and these shafts],
The rotations of the clutches 9a and 20a are in the idling direction for the respective one-way clutches, and are biased in the counterclockwise direction by the lever spring 52. 7 hook 51 swings counterclockwise and hook fin 5
5 (see Figure 3). Then, a sheet-shaped original M is placed on the original platen 12, and a star (not shown)! When the - key is pressed and the document presence/absence sensor 32 detects the document M on the document table 12, the control section 57 that receives the detection signal from the sensor 32 rotates the drive motor 59 in the normal direction. From there, each roller 30°33.19 is rotated by the motor 59.
. The documents M are separated one by one, and only the lowest document M is conveyed.The document M is then held between conveyance rollers 16 and 19 and conveyed to the platen 6, and its image is read by the same operation as described above. The document M1.ll is held between a pair of conveying rollers 17°20 and discharged onto the paper discharge tray 23.

(G) As described in the detailed description of the invention, the present invention has a parallel movement mechanism for moving the guide means approximately parallel to the conveyance means, so that the height at which the book document is conveyed is linked. It is possible to reduce the size of the device and to easily operate the operating section.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 are front sectional views showing a document conveying device according to the present invention. Furthermore, FIGS. 4 and 5 are cross-sectional views showing essential parts of the document conveying device according to the present invention. Furthermore,
FIG. 6 is a block diagram showing a control section according to an embodiment of the present invention. FIG. 7 and FIG. 8 are flowchart 1 showing the operation of the present invention. Also, Figure 9 (al, (
bl is a front sectional view showing the operation of the present invention. Further, FIGS. 10 and 11 are front sectional views showing a conventional example. 1.1' document conveyance device, 13.13' guide means, 1.6.17, 19, 20.33 conveyance means,
28, 28a, 42, 43° 44.45 Parallel movement (link) mechanism.

Claims (1)

[Scope of Claims] 1. A document conveyance device having a conveyance means for conveying a document, and a guide means movable between a guide position in contact with the conveyance means and a release position separated from the conveyance means, comprising: A document conveying device characterized in that the guide means is configured to be movable by a parallel movement mechanism that moves the guide means substantially parallel to the conveyance means.