JPH0361236A - Original transport device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a document conveyance device applied to facsimile machines, copying machines, printers, and the like.

<Prior Art> In the case of factor paper, a document is conveyed by a conveying means to an optical reading system at a predetermined speed, its contents are read, and the contents are transmitted to a recording system.

FIG. 9 shows an example of a document conveyance/reading system installed in a facsimile machine or the like.

According to the figure, an original if document stand 10 that also serves as a device cover
If you set multiple originals S in 0 and perform the reading operation,
Among the plurality of originals S set above, the bottom several originals S are guided by a document guide 110 provided on the same horizontal plane as the original placing table 1 (10), and are moved to a preliminary conveyance roller 120.
The sheets are conveyed by a pressure contact member 130 that is in pressure contact with this, and separated one by one by a separation roller 140 and a pressure contact member 150 that is in pressure contact with this.

Then, the separated document S is transported by the pair of transport rollers 160a and 160a.
60b, 170a, and 170b while passing through the optical reading means 180, light is irradiated from the light source 180a of the optical reading means 180, and the reflected light is reflected by the mirror 18.
The light is incident on a photoelectric conversion element 180d such as a CCD through the lens 180c and a photoelectric conversion element 180d, where it is converted into an electrical signal, and this signal is transmitted to a predetermined recording system.

<Problems to be Solved by the Invention> In the above-mentioned document conveyance/reading system, in order to reliably separate the stacked documents S one by one at the separation section consisting of the separation roller 140 and the pressure contact member 150, it is necessary to stack a plurality of documents S. The leading edge of the stack of originals is separated, and the end surface of the leading edge becomes the fourth
Although it is preferable that the wedge shape is shown in FIG.
0 are substantially on the same plane, the leading edge of the document bundle is not separated, as shown in FIG. Sometimes.

For this reason, it is necessary to first (set the conveyance force of the RIIC feed roller 120 to a large value and use the prega conveyance roller) 20 to split the leading edge of the document bundle and change the end surface of the tip from a perpendicular state to a wedge shape. Alternatively, a method has been taken in which the conveying force of the separation roller 140 is set to a large value to separate the leading edge of the bundle of documents, that is, to break the end face of the leading edge from a perpendicular state into a wedge shape and separate the documents one by one. In either case, the pinching force on the originals S is strong and the frictional force between the originals S becomes large, resulting in so-called double feeding (multiple sheet feeding) in which the originals S are conveyed overlapping without being separated from each other.
There was a risk that this could occur.

As a means to eliminate such drawbacks, for example, the document guide 110 can be set to the document is! It is conceivable that the mounting table 100 be tilted downward.

In this way, the leading edge of the document bundle can be moved to the document guide 11.
It becomes possible to bend and sort along the zero axis, and there is no need to set the conveyance force of the preliminary conveyance roller 120 or the conveyance force of the separation roller 140 to be large.

However, when the document S leaves the separation roller 140 and moves to the almost horizontal optical reading section 180, the conveyance path changes from an inclined path to a horizontal path.
The rear end may wobble, and this wobbling may make it impossible to obtain a good read image.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to reliably separate documents one by one and convey them to a document reading means so that a good read image can be obtained. An object of the present invention is to provide a document conveying device that can perform the following tasks.

<Means for solving the problem> The means for solving the above problem and applied to the embodiments described below is the original on which the original is placed! ! The original i! a separating means for separating the originals conveyed from the document placing table one by one and conveying them to the document reading means; and a guide inclined with respect to the document placing table so as to guide the originals from the document placing table to the separating means. and a sub-guide portion that is gently inclined with respect to the document reading means and guides both widthwise end portions of the document in the vicinity of the separating portion.

Further, the sub-guide portion is formed by recessing both widthwise end portions of the guide portion.

Further, the sub-guide portion may be 45 mm from the center of the guide portion.
It is characterized by being formed within the range of mm to 150 mm.

According to the above means, the original i3! When the leading edge of a plurality of originals (original bundle) stacked on the placing table is pushed into the entrance side of the separating section, the leading edge bends along the guide section, and is separated and the end surface of the leading edge becomes wedged. It becomes like this.

Then, when the document reading operation is started, the document is separated one by one by the separating section and conveyed to the document reading means.

Here, both ends of the document in the width direction are guided by a sub-guide section that is gently inclined with respect to the document reading section, so when the trailing edge of the document comes off the separating section and moves to the document reading means, The deflection at both end portions in the width direction can be suppressed as small as possible (Embodiment) An embodiment of the document conveying device according to the above-mentioned means will be described below.

[First example]

FIG. 1 is a side sectional view of the document conveying device, FIG. 2 is a perspective view of the document conveying device, FIG. 3 is a sectional view of the entire facsimile machine equipped with the document conveying device, and FIGS. 4(a) and (b). ) is an explanatory diagram showing the state of the end surface of the leading edge of the document bundle.

First, an outline of the entire facsimile will be explained with reference to FIG.

Reference numeral A in FIG. 3 is the main body of the facsimile machine, which is composed of an original conveyance/reading system B and a recording system C.

The document conveyance/reading system B includes a preliminary conveyance system consisting of a document placing table 2 which also serves as a cover for the main body of the facsimile machine, a preliminary conveying roller 4 which conveys the document S from this document placing table 2, and a pressure contact member 5 which presses against the document placing table 2. section 3 and this preliminary conveyance section 3
A document conveyance device 1 is equipped with a separation section 6 consisting of a separation roller 7 that separates the documents S conveyed one by one and a pressure contact member 8 that comes into pressure contact with the separation roller 7.

Further, the document conveyance reading system B includes an optical reading means 11 for reading the document S conveyed from the document conveyance device 1 (a document table glass lla as a reading section, an optical tJo b
, a mirror 11c, a photoelectric conversion element 11e consisting of a lens lid, a CCD, etc., and a pair of document feed rollers 12 arranged on the population side of this optical reading means 11 (on the right side in FIG. 3).
a, 12b, and a pair of document ejection rollers 13a, 13b arranged on the exit side of the optical reading means 11 (left side in FIG. 3).
etc. are equipped.

The recording system C also includes a storage section 17 that stores the rolled recording sheet 16, a platen roller 1B that pulls out the rolled recording sheet 16 from the storage section 17, and a rolled recording sheet pulled out by the platen roller 18. a decurling mechanism 19 (decal shaft 19a1 guide shaft 19b) that removes curling of the recording sheet 16; a recording head 20 that records a predetermined image on the recording sheet H6 that is heated and pulled out by an image signal; It is equipped with a force for canting the rear end of the cut recording sheet opening 6, a paper discharge roller 22 for discharging the cut recording sheet 16, a stacker 23, and the like.

Next, regarding the 1 part of the original document conveying device, FIGS.
This will be explained in detail with reference to the drawings.

Sliders 2a and 2b are provided at the center of the upper surface of the document table 2 to align both side portions of the document S and to guide the both side portions in the direction of the arrow shown in FIG. ) is movably installed.

Further, the preliminary conveying roller 4 constituting the preliminary conveying section 3 is arranged at a lower position than the upper surface of the document mounting table 2, and the separating roller 7 constituting the separating section 6 is further lower than the preliminary conveying roller 4. placed in position.

A window hole 9 through which a portion of the preliminary conveyance roller 4.4 and the separation roller 7 is exposed is provided between the document placement table 2 and the separation unit 6.
A downwardly inclined guide portion 9 having a, 9a and 9b is provided.

This guide part 9 is the original S! It guides the document S from the mounting table to the separation section 6, and is inclined downward from near the upstream side in the transport direction of the preliminary transport roller 4 to near the downstream side of the separation roller rough.

Therefore, a plurality of documents S are stacked on the document table 2, and the leading edge of the stacked documents S (document bundle) is moved along the guide section 9 between the separating roller 7 of the separating section 6 and the pressing member 8. When it is pushed into the space 6a (near the upstream side of the separating section 6) formed by the two, the leading end thereof is bent relative to the part placed on the document table 2, as shown in FIG. 4(a).
As a result, the tip portion is separated and the end surface of the tip portion becomes wedge-shaped. That is, as shown in FIG. 6B, the end surface of the tip portion is aligned with the inclined pressure contact member 8.

Here, the inclination angle θ1 (see FIG. 1) of the guide section 9 with respect to the upper surface of the document mounting table 2 is determined by the angle θ1 (see FIG. It is sufficient that the tip is set so that the end surface of the tip becomes wedge-shaped by being fanned, and it is set within the range of 5° to 30°, although it varies depending on the material, thickness, number of sheets, etc. of the document S. has been done.

Further, a separation roller 7 is provided between the center position of the preliminary conveyance roller 4 and the width direction end portions of the guide portion 9 perpendicular to the document transport direction, that is, the portions where both width direction end portions of the document S are applied.
A sub-guide portion 9C19c is formed across the position.

The sub-guide portion 9c is formed by recessing the upper surface of both ends in the width direction of the guide portion 9, and its bottom surface 90' is connected to the substantially horizontal document guide surface 11 of the document reading means 11.
It is set to have a gentle slope with respect to f.

Here, the width L of the sub-guide portion 9c (see FIG. 2, t, = t
,, -Lx) is A4 size (210mm)
, B4 size (257mm), A3 size (297mm)
For example, 85 mm (L
z) to about 150I(L,). In addition,
Documents smaller than A4 size, such as F6 size (105m)
For example, from 45 mm (Lz) to 150 mm from the center of the guide section 9 so that it can accommodate the originals of
It can also be set to (L +).

By providing the sub-guide parts 9c and 9c in this manner, even if the trailing edge of the original S comes off the separation roller 7 and moves from the inclined guide part 9 to the approximately horizontal original guide surface 11f during transport of the original (the transport path Even if there is a change in the conveyance path), both ends of the document S in the width direction are guided by the sub-guide portion 9c that is gently inclined with respect to the document guide surface 11f before leaving the separation roller 7, and the change in the conveyance path is prevented. Because there are fewer
The shake is small, and disturbances in the read image can be kept as small as possible.

The function of this sub-guide portion 9c will be explained with reference to comparative examples shown in FIGS. 5 to 7.

FIG. 5 shows the document conveying device 1 without the sub-guide section 9c. In this case, as shown in FIG. 12a, 12b, document ejection rollers 13a, 13
At this time, the document is conveyed by the document roller 13b.
Since the transport speed of the document feed roller 12b is set higher than that of the document feed roller 12b, the document S does not slacken, and the document S can be moved along the substantially horizontal document guide surface 11f extending from the guide section 9.
The upper document guide 9d is provided approximately parallel to the document guide surface 11f, and the document is conveyed at an approximately mid-height position.

Then, when the trailing edge of the document S comes off the separation roller 7 and moves to the document guide surface 11f, the conveyance path changes rapidly from an inclined state to a horizontal state as shown in FIG. 7, and at this time, the document S itself By sawing, the original S is placed on the original guide surface 11.
f and the upper document guide 9d (see the area surrounded by the two-dot chain line in the figure). The widthwise end portions of the document S are not held by the document feed roller 12b immediately after being removed from the separation roller 7, unlike the central portion of the document S, and therefore swing particularly in the vertical direction.

The sub-guide portion 9c guides both widthwise end portions of the document S before it leaves the separation roller 7, thereby reducing changes in the conveyance path and thereby reducing the deflection.

This will be explained in more detail with reference to FIG. 8, which shows the relationship between the deflection of the document S and the amount of misreading.

In a reduction optical system using a lens lid like the document reading means 11, the maximum document reading width is very large relative to the diameter of the pupil of the lens lid, and as shown in the figure, the angle of view increases as the distance from the center E increases. becomes larger (θ, 〈θ,)
.

On the other hand, due to the vibration, the original reading position (the position shown by the solid line in the figure), the original guide part 11f and the upper original guide part 9d.
When the camera moves up from the position (at an intermediate height between

In other words, the amount of reading deviation in the middle part of the document S is
, the angle of view is θ1, the amount of reading deviation at both sides in the width direction is Xb, the angle of view is θ, and the amount of lifting at the middle part and both ends of the document S in the width direction is l, then X, = fXsinθa,Xb=i! ,X5inθ.

However, since θ1〈θh (Sillθ, <sinθ,), even if the lifting amount i of the middle part of the original S is the same as that of both widthwise end parts, the reading deviation amount is such that the widthwise end parts of the original S are the same as the middle part. greater than (X, <Xb). In reality, it swings in the vertical direction, so the amount of reading deviation is twice as large as X, , X.

For this reason, disturbances occur in the read image, but in the middle part of the document S, the amount of deviation X, is small and the image disturbance is not noticeable, but at both ends of the document S, the amount of deviation X is large, and the image disturbance is noticeable. Put it away.

The sub guides 9c, 9c reduce the amount of reading deviation X by reducing the deflection (1) at both ends of the document S in the width direction.
, is made small to minimize disturbance in the read image.

Note that the reason why the sub-guide portion 9C is not provided in the central portion of the guide portion 9 is as follows.

That is, if the sub-guide part 9 is also provided in the central part of the guide part 9 to make the slope gentle, the original S and the pressure contact member 8 (friction piece 8a), which is necessary to improve the separation performance of the original S, can be
), and it becomes impossible to secure a space for arranging mechanical components such as the separation roller 7 and the preliminary conveyance roller 4 below the central portion of the guide section 9.

Further, a wedge-shaped member 10 is provided between the sliders 2a and 2b, and is inclined so that it is lower on the guide portion 9 side and higher on the side away from the guide portion 9.

This wedge-shaped member 10 slightly lifts the rear end of the document bundle, so that the lowest document S is separated from the preliminary conveyance roller 4 (a gap is created between the lowest document S and the preliminary roller 4). , even if the lowest document S does not leave the preliminary conveyance roller 4, the weight of the document bundle hardly acts on the preliminary conveyance roller 4, or the leading edge of the document bundle hits the separation roller rough and is conveyed more than the separation roller 7. This prevents the paper from not being conveyed to the downstream side (optical reading means Il side).

That is, depending on the material, thickness, number of sheets, etc. of the document S, the resistance to bending may be large and the document S may deform into a curved shape without being bent along the guide section 9. This prevents the document S from separating from the preliminary transport roller 4.

Here, the original W1 of the wedge-shaped member 10. The inclination angle θ2 with respect to the upper surface of the i-stand 2 is smaller than the inclination angle θ of the guide portion 9, and is set to about 5° to 25°.

The wedge-shaped member 10 is set to such an angle range.
When the inclination angle θ2 is smaller than 5″, the wedge-shaped member 10
If the effect of providing the document bundle cannot be obtained and the inclination angle θ2 of the wedge-shaped member 10 is larger than 25°, the guide portion 9 will cause the end surface of the leading end of the document bundle to be pressed against the pressure member 8 as shown in FIG. 4(b). This is because it will not be possible to align them.

In addition, the height of the wedge-shaped member 10 is e, the slider 2a,
2b is set lower than the height f of the sliders 2a and 2b, so that the document stack does not protrude from the sliders 2a and 2b.
Both sides of the document S are guided by the guide.

Furthermore, the width g of the wedge-shaped member 10 is the slider 2a,
Sliders 2a and 2b when 2b are brought closest to each other
It is set smaller than the interval between sliders 2 and 2.
It is designed so that it does not get in the way of the movement of a and 2b.

Furthermore, the tip of the wedge-shaped member 10 is connected to the slider 2.
It is located almost on the same line as the front end surfaces of a and 2b. If the tip of the wedge-shaped member 10 protrudes from this position, the wedge-shaped member 10 will come too close to the guide section 9 and the operation cover 14 (see FIG. 3) will get in the way when setting the document S. The document stack cannot be deformed so that the weight is sufficiently applied to the preliminary conveyance roller 4, and the wedge-shaped member 1
If the tip of the wedge 0 retreats from the above-mentioned position and becomes too far away from the guide portion 9, the effect of providing the wedge-shaped member 10 cannot be obtained.

Note that the document conveying and reading system B is covered with an operation cover 14 except for the document placing table 2 portion. and,
Although not shown, the operation cover 14 is equipped with various operation keys etc. on the front side and electronic circuits etc. on the back side.

Further, on the back side of the operation cover 14, the pressure contact member 5.
8. A document feeding roller 12b and a document discharging roller 13b are attached, and when the operation cover 14 is opened, these pressure contact members 5.8, document feeding roller 12b, and document discharging roller 13b are attached to the A side of the facsimile machine main body. The preliminary conveyance roller 4, separation roller 7, and document feed roller 1 attached to the
2a, it is separated from the original document holding roller 13a so that jamming of the original S can be easily handled.

Further, the preliminary conveying roller 4 of the preliminary conveying section 3 is formed into a substantially elliptical shape, consisting of a circumferential portion and a flat portion. The pressure contact member 5 of the preliminary conveyance section 3 is swingably attached to the back side of the operation cover 14 via a bottle 5a, and is biased in the direction of the preliminary conveyance roller 4 by a spring (not shown). It is in pressure contact with the preliminary conveyance roller 4. When the pre-WIvIi feed roller 4 rotates and the circumferential portion faces the pressure contact member 5, the circumferential portion comes into pressure contact with the pressure contact member 5, and when the flat portion faces the pressure contact member 5, the flat portion and A gap is created between the press member 5 and the document S, so that the document S is intermittently conveyed.

The pressure contact member 8 of the separation section 6 includes a friction piece 8a, a friction piece holder 8c which is movably attached to the back side of the operation cover 14 and presses the friction piece 8a toward the separation roller 7, and a spring. 8c, and the spring force of the spring 8c acts on the friction piece 8a via the PX friction piece holder 8b, so that the friction piece 8a comes into pressure contact with the separation roller 7.

Further, the document feed roller 12b and the document discharge roller 13
b is urged toward the document feed roller 12a and document discharge roller 13a by the spring force of the pressing spring 15 when the operation cover 14 is closed.

Further, the document mounting table 2 is provided so as to be openable and closable with respect to the facsimile apparatus main body A using a bin 2c as a fulcrum, and the storage section 17 can be opened when replacing the rolled recording sheet 16, for example.

Further, a decurling shaft 19a constituting the decurling mechanism 19 of the recording system C is provided on the back side of the document mounting table 2. Further, as the winding diameter of the recording sheet 16 becomes smaller, the guide shaft 9b of the decurling mechanism 19 rotates about the bin 19c as a fulcrum as shown by the dotted line in FIG. The corners are made larger when wrapping around. That is, as the winding diameter of the recording sheet 16 becomes smaller, the degree of curl becomes more severe, and accordingly, the curl of the recording saw stitches 6 is removed by increasing the angle of the winding around the decal shaft 19a.

Reference numeral 24 in FIG. 3 is a power supply for the main body A of the factor cutting apparatus.

Next, the operation of the first embodiment will be explained.

When reading a document, a plurality of N documents S are set on the document table 2 in a stacked state, and the leading edge of the stacked documents S (document bundle) is moved along the guide section 9 to the separating roller 7 of the separating section 6. and the pressure contact member 8 until it reaches the space 6a.

At this time, a document sensor (not shown) provided on the inner surface of the operating section 14 near the preliminary conveyance roller 4 detects the document S, and the preliminary conveyance roller 4 and separation roller 7 move 1 in the direction of the arrow shown in FIG. Rotates to smoothly push in the stack of documents.

Further, the leading end of the document bundle is bent and fanned along the guide portion 9, and the end surface of the leading end becomes wedge-shaped.
The rear end of the document bundle is slightly lifted by the wedge-shaped member 10, and the weight of the document bundle acts on the preliminary conveyance roller 4.

Then, when the original reading operation starts, the preliminary (Jrl.
l feeding roller 4, separation roller 7, document feeding roller 12a,
The original document roller 13a rotates in the direction of the arrow shown in FIG.

At this time, both widthwise end portions of the document S are guided by the sub-guide portion 9C19C before the trailing edge of the document S comes off the separation roller 7.

Light is irradiated onto the original S from the light source 11b when it passes through the original platen glass 11a of the optical reading means 11, and the reflected light enters the photoelectric conversion element lie via the ξ lens 11c and the lens lid, and an electrical signal is generated. The data is converted into and sent to a predetermined recording system.

Also, during recording, the platen roller 18 rotates to pull out the roll-shaped recording head H6 from the storage section 17, and the decurling mechanism 19 removes curling curls from the recording head.
0. Then, a predetermined image is recorded on the recording sheet 16 by the recording head 20 which generates heat in response to both signals, the trailing edge of the image is cut by the cutter 21, and the sheet is discharged to the stacker 23 by the paper discharge roller 22.

According to the first embodiment, when reading a document,
The leading edge of the document bundle is bent along the guide section 9 and separated, resulting in a wedge-shaped end surface of the leading edge. There is no need to separate the document bundle by increasing the pressure contact force of the pressure contact member 5 against the pre-is feed roller 4 and the pressure contact force of the pressure contact member 8 against the separating roller rough, and the document S is conveyed while being overlapped without being separated from each other. Double feed (multiple sheet feed)
does not occur.

Further, both widthwise end portions of the document S are provided with sub guides 9c, 9c that are gently inclined with respect to the document guide surface 11f near the separation portion 6, that is, before leaving the separation roller 7.
(bottom surface 9c'), even if the trailing edge of the document S comes off the separation roller 7 and moves to the optical reading means 11, and the conveyance path suddenly changes from an inclined state to a horizontal state, the document S The vibration at both end portions in the width direction of S is small, and disturbances in the read image at the same portions can be suppressed as much as possible.

Furthermore, since the pre-is feed roller 4 and the separation roller 7 are located below the document placement table 2, the amount of upward protrusion of the operation cover 14 that covers these with respect to the document placement table 2 is reduced, and the The overall height of the device main body A can be reduced. Further, since it is not necessary to increase the pressing force of the pressing member 8 against the separation roller 7, that is, the pressing member 8
Since it is not necessary to hold the main body A of the facsimile machine in a nearly upright state and forcefully press it against the separation roller rough, the pressure contact member 8 is laid down (the inclination angle of the pressure contact member 8 is made small), and the facsimile machine main body A is
The overall height of the can be reduced.

Furthermore, the rear end of the document bundle is slightly lifted by the wedge-shaped member 10, and the leading end of the document bundle does not lift up from the preliminary conveyance roller 4 or hit the separation roller 7, so that the document is not removed from the preliminary conveyance roller 4. The conveying force is reliably transmitted to S.

[Other Examples]

In the first embodiment, the guide section 9 is configured separately from the document placing table 2, but the guide section 9 and the document placing table 2 are separate from each other.
may be configured integrally. In this case, when the guide section 9 and the document table 2 are opened, the operation cover 1
4 can be opened at the same time.

Further, in the first embodiment, the sub-guide portion 9c is provided integrally with the guide portion 9, but it may be constructed separately.

<Effects of the Invention> As described above, according to the present invention, there is a document placing table on which a document is placed, and a document conveyed from the document placing table by a conveying means, which is separated one by one and conveyed to the document reading means. a separating means for guiding the document from the document placing table to the separating means; a guide section inclined with respect to the document placing table so as to guide the document from the document placing table to the separating means; and a guide section inclined gently with respect to the document reading means near the separating section. Since the apparatus is provided with a sub-guide section that guides both ends of the document in the width direction, it is possible to reliably separate the documents one by one and convey them to the document reading means so that a good read image can be obtained.

Furthermore, if the sub-guide portion is formed by recessing both widthwise end portions of the guide portion, the number of parts does not increase and manufacturing costs can be reduced.

Also, place the sub guide part at a distance of 45 mm to 1 inch from the center of the guide part.
If it is formed within the range of 50 mm, it can be applied to originals of various sizes.

[Brief explanation of drawings]

1 to 4 (a) and (b) show a first embodiment of the present invention, in which FIG. 1 is a side sectional view of the document conveying device, and FIG.
The figure is a perspective view of the document conveyance device, FIG. 3 is a sectional view of the entire facsimile equipped with the document conveyance device, and FIG.
(b) is an explanatory diagram showing the state of the end surface of the leading edge of the document bundle;
Furthermore, FIGS. 5 to 7 show a comparative example in which the sub-guide section is not provided, and FIG. 5 is a perspective view of the document conveying device without the sub-guide section, and FIG. 6 and FIG. FIG. 8 is a side sectional view illustrating the state of document conveyance in the apparatus; FIG. 8 is an explanatory diagram showing the relationship between the deflection of the document S and the amount of reading deviation; FIGS. It shows
FIG. 9 is a partial side sectional view of a conventional document conveying device, and FIG. 10 is an explanatory view showing the state of the end surface of the leading end of a bundle of documents in the document conveying device. A is the main body of the facsimile machine, B is the document transport and reading system,
C is the recording system, 1 is the document transport device, 2 is the document $32 device,
3 is advance (lWya transport section, 4 is advance # conveyance C'-ra, 5
is a pressure contact member, 6 is a separation part, 7 is a separation roller, 8 is a pressure contact member, 9 is a guide part, 9c is a sub-guide part, 9c' is a bottom surface,
S is the manuscript.

Claims (3)

[Claims] (1) A document placing table on which a document is placed; a separating device which separates the document conveyed from the document placing table by a conveying means one by one and conveys it to the document reading means; a guide section inclined with respect to the document mounting table so as to guide the document to the separating means; and a sub-guide gently inclined with respect to the document reading means and guiding both widthwise end portions of the document in the vicinity of the separating section. A document conveying device characterized by comprising: a section; (2) The document conveying device according to claim 1, wherein the sub-guide portion is formed by recessing both widthwise end portions of the guide portion. (3) The sub guide part is 45 mm from the center of the guide part.
2. The document conveying device according to claim 1, wherein the document conveying device is formed within a range of mm to 150 mm.