JP3513280B2 - Image reading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus having a copy mode and a facsimile transmission mode.

[0002]

2. Description of the Related Art Conventionally, in an image reading apparatus having a copy mode and a facsimile transmission mode, various sized originals are appropriately set in the vertical and horizontal directions on a platen to selectively operate the copy mode and the facsimile transmission mode. I am using it. That is, in the copy mode used as a copying machine, in order to improve the throughput, that is, the number of prints per unit time, for example, in the case of A4 size or B5 size documents, it is common to set the documents horizontally on the document table. Is.

On the other hand, in the facsimile transmission mode for transmitting an original image to another facsimile device, etc., the original facsimile image is transmitted horizontally from the front end of the recording sheet on which the original image information is received and recorded by the destination facsimile device. Since a so-called header that records the name, transmission time, number of sheets to be transmitted, etc. is recorded, so that the orientation of this header and the orientation of the document match, for example, when viewing a document such as an A4 size or B5 size document. If is the vertical direction, it is common to set the original on the original table in the vertical direction.

As described above, in the copy mode and the facsimile transmission mode, depending on the size of the document, or even if the document size is the same, depending on the direction in which the document is viewed, the document setting direction may be changed vertically or horizontally. In the conventional image reading apparatus, the user appropriately changes the setting direction of the original according to each mode and sets the original.

[0005]

However, since the conventional image reading apparatus depends on the attention of the user, there is a problem that the original is erroneously set due to the carelessness of the user and a copy error or a facsimile transmission error occurs. In particular, there is a tendency that a document is easily erroneously set when the facsimile transmission mode is used.

[0006] For example, when a facsimile transmission mode is used, where an A4 size original must be set in the vertical direction, a user who has acquired the habit of setting an A4 size original in the horizontal direction is in habit according to the habit. If you accidentally set it in the horizontal direction and send it by facsimile as it is, the receiving side will mistakenly determine that it is A3 size,
In many cases, the original image is reduced and recorded, or a recording sheet having a width size in the B4 vertical direction is set on the receiving side, and the original image is expanded by an amount outside the B4 vertical width size. The problem that both sides are cut occurs.

In order to solve the above-mentioned problems, there is a configuration in which image data read at the time of reading an original is temporarily stored in a memory, and then the image direction is appropriately converted and output. For example, in a facsimile transmission mode, a document is set in the horizontal direction and the image data read is converted into vertical image data, which is then transmitted to another facsimile device or the like.

However, in this case, it is necessary to equip an extra memory, a vertical / horizontal conversion circuit, and the like in order to perform vertical / horizontal conversion of image data, which causes a problem of considerable cost increase. Further, even if an extra memory and a vertical / horizontal conversion circuit are provided, the above-mentioned problem cannot be solved when direct transmission is performed in which image data is not temporarily stored in the memory and sequential facsimile transmission is used.

The present invention is to solve the above-mentioned problems.
An object of the present invention is to provide an image reading apparatus which prevents the erroneous setting of a document by restricting the setting direction of the document according to which mode is selected between the copy mode and the facsimile transmission mode. It is a thing.

[0010]

A typical configuration according to the present invention for achieving the above object regulates a document stacking unit for stacking a document and a position of a document stacked on the document stacking unit. A document position regulating unit that operates as described above, a document conveying unit that conveys the document whose position is regulated by the document position regulating unit, and an image reading unit that reads image information recorded on the document conveyed by the document conveying unit. An image reading apparatus having a copy mode in which recording is performed on a recording sheet based on image information read by the image reading unit, and a facsimile transmission mode in which the image information read by the image reading unit is transmitted to another device ,
In the image reading apparatus, control is performed so that the operation of the document position restricting unit changes depending on which mode is selected from the copy mode and the facsimile transmission mode.

In a specific configuration of the image reading apparatus, the document position restricting means is provided so as to be movable in a direction intersecting the document conveying direction with respect to the document stacking means, and is stacked on the document stacking means. A guide slider that comes into contact with the side edge of the original and regulates the position of the original, and the movable range of the guide slider corresponding to which of the copy mode and the facsimile transmission mode is selected. It is characterized in that the control is performed so as to change.

Further, in another specific configuration of the image reading apparatus, the document position regulating means is provided so as to be movable in a direction intersecting with a document conveying direction with respect to the document stacking means, and the document stacking means. A guide slider for contacting a side end of a document placed on the document to regulate the position of the document; and a display unit for displaying the set position of the guide slider in correspondence with the size width of the document. copy mode and the display to vary the display of the display means in response to either select one of the modes in said facsimile transmission mode
It is characterized in that control is performed .

Since the image reading apparatus according to the present invention is configured as described above, when the movable range of the guide slider is changed between the copy mode and the facsimile transmission mode,
Since the document can be set only in the direction corresponding to each mode, it is possible to prevent the document from being erroneously set.

Further, when the display of the display means is changed between the copy mode and the facsimile transmission mode, the direction of the document to be set becomes clear to the user, and the size display is overlooked, and erroneous setting of the document due to an error is prevented. can do.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image processing apparatus having a facsimile function and a copying function by an electrophotographic image forming means will be specifically described as an example of an image reading apparatus according to the present invention with reference to the drawings. 1 is a perspective explanatory view showing an overall configuration of an image processing apparatus including an image reading apparatus according to the present invention, and FIG. 2 is a cross-sectional explanatory view showing an overall configuration of an image processing apparatus including an image reading apparatus according to the present invention, 3 is a perspective view showing the structure of the document position regulating means, FIG. 4 is a block diagram showing the control system of the document position regulating means, FIG. 5 is a plan view showing the operation of the document position regulating means in the copy mode, and FIG. FIG. 7 is a plan view showing the operation of the document position regulating means in the facsimile transmission mode with the extension tray accommodated, and FIG. 7 shows the operation of the document position regulating means in the facsimile transmission mode with the extension tray opened and extended. It is a top view.

First, the overall structure of an image processing apparatus equipped with an image reading apparatus according to the present invention will be described with reference to FIGS. In FIGS. 1 and 2, reference numeral 1 denotes a document table serving as a document stacking unit for stacking a sheet document D made of paper, synthetic resin, or the like, and the length of the document table 1 in the present embodiment in the document transport direction. That is, the B4 size document D is in the longitudinal direction with respect to the document transport direction (hereinafter, simply referred to as “vertical direction”).
It is configured to have a length such that it can be stably stacked and that the A3 size document D cannot be stably stacked in the vertical direction.

The length of the document table 1 in the direction orthogonal to the document conveying direction (hereinafter, simply referred to as "width direction") is
A4 size document D can be stacked in the lateral direction (hereinafter simply referred to as “lateral direction”) with respect to the document transport direction (that is, A
It is configured to have a length such that three size documents D can be stacked vertically.

Reference numerals 2a and 2b restrict the position of the document D stacked on the document table 1 in the document transport direction, so that it can move relative to the document table 1 in a direction orthogonal (intersecting) to the document transport direction. It is a pair of guide sliders that constitute the provided document position regulating means.

As will be described later in detail with reference to FIG. 3, the guide sliders 2a and 2b are arranged so as to move toward and away from each other by the same distance in the opposite directions with respect to the center. By moving the guide sliders 2a and 2b with respect to the document D of a predetermined size stacked in the substantially central portion,
The guide sliders 2a and 2b contact both side edges of the document D to regulate the position of the document D.

Reference numeral 3 denotes an extension tray which is provided so as to be foldable with respect to the original table 1 in the original conveying direction, and an original D having a width of B4 is placed in the vertical direction on the original table 1. In the case where the width is less than the width of the document D corresponding to the case (for example, the A4 size vertical direction, the B5 size vertical direction, the horizontal direction, and the size smaller than this), the relatively short length of the document D is as described above. In addition, since it is possible to stably stack the document on the document table 1 sufficiently without using the extension tray 3, when reading this type of document D, as shown in FIG. Used in the state of being stored inside.

Further, when the width of the document D stacked on the document table 1 is larger than the width of the document D corresponding to the case of stacking the B4 size document D in the vertical direction (for example, in the case of A3 size vertical direction). For a relatively long original D, see FIG.
As shown in FIG. 3, the extension tray 3 is pulled out from the document table 1 and set, and the documents D are stacked and used on the document table 1 and the extension tray 3.

In this embodiment, as described above, the extension tray 3 is configured to be drawn out in a foldable manner with respect to the document table 1. However, as another configuration, the extension tray 3 with respect to the document table 1 is used. It may be configured to extend the sheet by sliding it in the document conveying direction.

A guide slider 2a corresponding to the size of the document D is provided on an upper cover 13 provided on an upper part of a document transport unit 6 serving as a document transport unit provided on the downstream side of the document table 1 in the document feeding direction. , 2b are provided with a size display mark 4 serving as a display means for displaying the set positions.

The size indicating marks 4 are a pair of "A4R-" (A4 vertical direction set marks) and "B4-" (B4 vertical) at positions corresponding to the guide sliders 2a and 2b from the center on the upper cover 13. The direction set mark) and the mark are formed by silk printing, and on the outside of the mark, a pair of characters "A3 ・ A4-" (A3 vertical direction, A4 horizontal direction set mark) and the mark are formed. Is formed in the upper cover 13, and the surface thereof is covered with a semitransparent sheet.

Inside the upper cover 13 corresponding to the slits, LEDs (light emitting diodes) 41 are arranged corresponding to the characters and marks, which will be described later in detail with reference to FIG.

Therefore, when setting a document D of a predetermined size in a predetermined direction (vertical and horizontal directions), the document D is placed on the document table 1.
The guide sliders 2a and 2b are moved to the uppermost center portion, and the "-" position of the size display mark 4 silk-printed on the upper cover 13 (size position base lines 28b and 28c).
Or, the position of “−” of the size display mark 4 which is emitted and displayed by the LED 41 through the slit (the size position baseline 28
By setting the guide sliders 2a and 2b in a) and contacting both side edges of the document D, the position of the document D in the document transport direction is regulated.

The image processing apparatus provided with the image reading apparatus according to the present embodiment reads an image of the document D and records it on the recording sheet P by appropriately selecting a copy mode and a facsimile transmission mode which will be described later in detail. Or the image information of the read document D can be transmitted to another facsimile device or the like.

A touch panel 5 composed of an LCD (liquid crystal display) or the like is provided on the operation unit 14 arranged on the near side (the near side in FIG. 1) of the image processing apparatus. "COPY" (copy), "FAX" (facsimile), "PRINT"
A selection display button of "R" (printer) is arranged.

For example, when the user tries to use the facsimile transmission mode, "FA" on the touch panel 5 is displayed.
By touching the portion displaying "X", the display of "FAX" is lit, and "FAX" is largely displayed on the display unit 48 provided in the central portion of the touch panel 5.

When the copy mode is used, "COPY" on the touch panel 5 is selected, and when the printer mode is used, "PRINTER" is selected on the touch panel 5. Has become. Here, the case of using in the printer mode is used when an image is recorded on the recording sheet P provided in this machine according to the image information sent from another machine.

The operation unit 14 has a start button (indicated by "START" in FIG. 1) for starting the operation of the image processing apparatus and a stop button for stopping the operation ("STOP" in FIG. 1).
Is displayed) and a reset button (displayed by “RESET” in FIG. 1) for resetting operation setting cancellation is arranged. Furthermore, in the copy mode, the number of copies can be input,
A numeric keypad for inputting a facsimile number of a transmission destination at the time of transmission in the facsimile transmission mode, a one-touch key for temporarily storing the image information of the document D in the memory, and then transmitting them all at once are arranged.

Next, the image reading operation of the image reading apparatus will be described in detail with reference to FIG. In FIG. 2, a document D is placed on the document table 1 and the guide sliders 2a and 2b are placed.
After the both sides of the document D are regulated and set by, the copy mode menu on the touch panel 5 is selected and the start key is pressed when using the copy mode, for example, the document pickup roller 7 serving as a document feeding unit. Is rotated in the document feeding direction, and the pressing plate 8 presses the document D toward the document pickup roller 7 side.
Is taken out from.

With respect to the original D fed by the original pickup roller 7, only the lowest one of the originals D is separated and fed by the action of the separation belt roller pair 9. The separation belt roller pair 9 is composed of a lower belt roller 9b which is rotationally driven in the document feeding direction and an upper belt roller 9a which is rotationally driven in a direction opposite to the document feeding direction, and the lower belt roller 9b is the document D. Only the lowest one of the sheets is fed, and the upper belt roller 9a pushes the upper document D back to the document table 1.

The document D separated and fed by the separation belt roller pair 9 is fed between the lower belt surface of the pressure plate belt 11 and the upper surface of the document table glass plate 12 while being guided by the document guide 10.

Here, the original document D is sent by the pressure plate belt 11 on the original table glass plate 12 in the direction of arrow a in FIG.
The image information is stopped at a predetermined position where the reading of the image information is started and fixed on the platen glass plate 12.

When the document D is stopped, the scanner 15 as an image reading means is scanned in the direction of arrow a in FIG.
The light irradiated from 15 to the image information surface of the document D is reflected, passes through the lens 16 via a plurality of mirrors, and the image information of the document D is read by the CCD 17 which is a photoelectric conversion element.

When the reading of the document D is completed, the lower belt surface of the pressure plate belt 11 is in the opposite direction to the above, and is indicated by an arrow b in FIG.
The document D that is rotated in the direction and discharged from between the lower belt surface of the pressure plate belt 11 and the upper surface of the document platen glass plate 12 is guided by the guide 43 and passes through the document transport roller pair 44 and the document discharge roller pair 45 and returns to the original state. The document is discharged and stacked on the document table 1.
The original D before reading and the original D after reading are pressed by the pressing plate 8.
And the sheets are sequentially fed, discharged, or loaded without interfering with each other.

The image information of the document D read as described above is converted into a digital signal, and then the laser scanner unit 19 turns on the laser according to the image information of the document D.
A latent image is formed on the photoconductor drum 20 by forming an image of laser light on the electrophotographic photoconductor drum 20 by the polygon mirror 18 while turning it off / on.

On the other hand, a sheet cassette is provided at the bottom of the apparatus body.
49a, 49b, 49c are arranged, and the recording sheet P is
The sheets are set in the sheet cassettes 49a, 49b, and 49c in the A4 horizontal, B4 vertical, and A4 vertical directions from the top.
Recording sheet P during copy operation (or printer operation)
Is selected by a sheet width sensor (not shown), and the recording sheet pickup rollers 21a, 21b, 21c corresponding to the selected recording sheet P rotate in the recording sheet feeding direction to pick up the recording sheet P.

Then, for example, when the document D is in the A4 horizontal direction, the upper recording sheet pickup roller 21a rotates, and the A4 horizontal recording sheets P stacked and accommodated in the upper sheet cassette 49a are fed out from the uppermost position. The skew feeding correction of the recording sheet P is performed by the recording sheet conveying roller pair 23 and the registration roller pair 22, and at the timing of the recording start position at which the recording sheet P reaches the position facing the photosensitive drum 20. Sent to.

Then, after the toner image is transferred onto the recording sheet P by the transfer roller 24, the thermal pressure fixing section 25 and the recording sheet discharge roller pair 26 are used to discharge the sheet outside the apparatus.
27 is discharged and loaded on top. The recording sheets P in the B4 vertical direction and the A4 vertical direction which are stacked and accommodated in the middle and lower sheet cassettes 49b and 49c are also conveyed and recorded in the same manner as described above corresponding to the size of the document D.

When the facsimile transmission mode is used, when the facsimile transmission mode menu on the touch panel 5 is selected and the start key is pressed, the image of the document D is read by the scanner 15 and the CCD 17 which are the image reading means as described above. The information is read, and the read image information of the document D is converted into a digital signal and then transferred to another facsimile device or the like via a telephone line modem or the like.

Next, the structure of the document position regulating means, which is a feature of the image reading apparatus according to the present invention, will be described with reference to FIGS. 3 and 4. In FIG. 3, on the document table 1, as described above, the guide sliders 2 which contact both side ends of the document D stacked on the document table 1 to regulate the position of the document D in the feeding direction.
a and 2b are provided so as to be movable in a direction (hereinafter referred to as "width direction") orthogonal to (or intersecting) the feeding direction of the document D, and at predetermined positions of the guide sliders 2a and 2b, respectively. Racks 29 and 30 extending in the width direction are integrally fixed.

Tooth portions 29a and 30a are formed on the racks 29 and 30 at a predetermined same pitch in the moving direction of the racks 29 and 30, and the tooth portions 29a and 30a are located between the racks 29 and 30. The tooth portions 31a of the pinion 31 rotatably provided are in mesh with each other so as to face each other.

With these configurations, the guide slider 2
It is possible to move a and 2b in the opposite directions with respect to the center with the same distance, and by operating one of the guide sliders 2a and 2b, the interval between the guide sliders 2a and 2b can be narrowed or widened. It is like this.

At the end opposite to the tooth 29a formed on the rack 29 provided on the guide slider 2a, the size position base line 28a provided on the upper cover 13 corresponding to the size of the document D, The protrusions 50a, 50b, 50c are formed so as to correspond to the intervals of 28b, 28c.
Microswitches 32a, 32b, 32c fixed to the apparatus body frame are arranged at positions facing 50b, 50c.

With the above structure, the guide sliders 2a, 2
When b is moved and set to the size position baseline 28a, the protrusion 50c of the rack 29 comes into contact with the drive knob of the micro switch 32a to operate the micro switch 32a, and the guide sliders 2a and 2b are set to the size position baseline 28b. Then, the protrusions 50b and 50c of the rack 29 are turned on by the micro switches 32a and 32b.
Microswitches 32a, 32b by touching the drive knobs of
Is activated and the guide sliders 2a and 2b are moved to the size position baseline.
When set to 28c, the protrusions 50a, 50b, 50c of the rack 29
Are brought into contact with the drive knobs of the micro switches 32a, 32b, 32c, respectively, to activate the micro switches 32a, 32b, 32c.

These micro switches 32a, 32b, 32
The set position of the guide sliders 2a and 2b can be detected by detecting the ON / OFF state of c.
The detection information of the micro switches 32a, 32b, 32c is transmitted to the control unit 53 shown in FIG. 4 and described later.

A convex portion 46 having abutting portions 46a, 46b orthogonal to the longitudinal direction of the rack 30 is formed at the tip of the rack 30 provided on the guide slider 2b and on the side opposite to the tooth portion 30a. A regulating member 33 is provided at a position corresponding to the contact portion 46a of the convex portion 46 so as to be erected and fixed to a cam 34 rotatably provided with respect to the apparatus body frame.

On the outer periphery of the cam 34, the rotating shaft of the cam 34
A claw 35 is provided on the opposite side of the restricting member 33 by 180 ° about 51.
Further, a claw 36 is formed at a position deviated from the restriction member 33 by 90 ° in the rotation direction of the cam 34 (direction of arrow c in FIG. 3) with respect to the rotation shaft 51 of the cam 34. There is.

Further, as shown in FIG. 3, a smooth curved surface is connected from the outer peripheral surface of the projecting end of the claw 35 to the outer peripheral surface of the claw 36 in front of the standing part of the claw 36. The outer peripheral surface of the tip of the cut-out portion and the outer peripheral surface of the claw 35 in front of the cut-out portion are connected with a gentle curved surface.

A hook 37a of a solenoid 37 fixed to the frame of the apparatus is opposed to a position corresponding to the claws 35 and 36, and a control unit shown in FIG.
When the solenoid 53 turns off the solenoid 37, the hooks 37a of the cam 34 rotating in the direction of arrow c in FIG. 3 are caught by the hooks 37a, and the cam 34 can be fixed at a predetermined position. .

The rotational driving force from the motor 52 shown in FIG. 4 is transmitted to the cam 34 by the gears 38b and 38a, whereby the cam 34 rotates in the direction of arrow c in FIG. Cam 34
The cam 34 is connected to the common rotary shaft 51 of the gear 38a and the gear 38a via the torque limiter 47. When the hooks 37a are hooked on the hooks 35 and 36 of the cam 34, the rotation drive from the motor 52 is performed. The force is blocked by the torque limiter 47 and the cam
It is not transmitted to 34, and is retained in a state where the hooks 37a of the cam 34 are hooked by the hooks 35 and 36.

With the above structure, the touch panel 5 displays "FA
When "X" is selected, the control unit 53 shown in FIG. 4 rotationally drives the motor 52, and the rotational driving force of the motor 52 causes the gear 38b,
38a rotates in the direction of the arrow in FIG. 3, and the cam 34 rotates in the direction of the arrow c in FIG.

First, the control unit 53 keeps the solenoid 37 in the OFF state and keeps the motor for a time longer than one rotation of the cam 34.
When 52 is rotated, the hook 37a of the solenoid 37 moves the cam 34
It will be in a state of being caught on one of the claws 35 and 36.

Then, from this state, the control section 53 turns on the solenoid 37 to pull the hooking claw 37a, and the hooking claw 37a is kept pulled for about the time when the cam 34 makes 1/2 rotation (180 ° rotation). After the holding, when the solenoid 37 is turned off and the hook claw 37a is opened, the arrangement angle of the claws 35 and 36 is deviated by 90 ° around the rotation shaft 51 of the cam 34, and before the solenoid 37 is turned on. On either of the claws 35, 36
Even if 37a is hooked, the hook 37a of the solenoid 37 contacts the outer surface of the cam 34 on the continuous surface 39 opposite to the hooks 35, 36 by 180 °, and always contacts the continuous surface 39 of the cam 34 before the finger 35. Therefore, in any case, if the motor 52 is rotated as it is, the cam 34 finally stops at the position where the hooking claw 37a engages with the claw 35 (hereinafter, this operation is referred to as "initializing operation").

When the cam 34 stops at the above position (the position shown in FIG. 3), the regulating member 33 standing on the cam 34 is fixed at a position where it can abut the abutting portion 46a provided on the convex portion 46 of the rack 30. As a result, the guide sliders 2a and 2b cannot move outside the size position baseline 28b in the vertical direction of B4.

Therefore, the guide sliders 2a and 2b are
4 The size cannot be moved to the position of the size position baseline 28a in the horizontal direction.
Since it becomes impossible to set the document D in the horizontal direction, it is possible to prevent the document D from being erroneously set by the user.

As described above, the document table 1 is provided with the extension tray 3 which can be rotated and opened with respect to the document table 1 to set the long document D and which can be extended. One end of the extension tray 3 is rotatably supported with respect to the apparatus main body frame, and when the extension tray 3 is folded and stored with respect to the document table 1, it is located at a predetermined position on the back surface of the extension tray 3 shown in FIG. The provided shielding plate 42 blocks the optical path of the photo interrupter 40 fixed to the apparatus main body frame, detects that the extension tray 3 is in the housed state, and transmits it to the control unit 53.

On the contrary, when the extension tray 3 is opened from the document table 1 and extended, the shielding plate 42 is retracted from the photo interrupter 40 and the optical path of the photo interrupter 40 is set in a transmissive state. It is configured to detect that 3 is in use and transmit it to the control unit 53.

Next, a case will be described in which an A4 size document D is to be transmitted by facsimile when the apparatus is used in the facsimile transmission mode. When attempting to send an A4 size document D by facsimile, first, by touching the "FAX" menu switch on the touch panel 5 on the operation unit, the mode is switched to the facsimile transmission mode. At this time, the "FAX" menu switch is turned on. The display is turned on and displayed as "FAX" on the display unit 48 arranged in the center of the touch panel 5.

In the facsimile transmission mode, since the A4 size document D is fed in the vertical direction, the guide sliders 2a and 2b are not moved to the A4 lateral size position base line 28a as long as it is used in the facsimile transmission mode. . Therefore, if the guide sliders 2a and 2b can be moved to the size position base line 28a in the A4 lateral direction as in the conventional case, the A4 original D can be set in the lateral direction, which may cause an erroneous setting.

However, in the present embodiment, because of the above-mentioned configuration, the size position baseline 28 in the A4 lateral direction is obtained.
Since the guide sliders 2a and 2b cannot be moved to "a" and the document D of A4 cannot be set in the lateral direction, there is no fear of erroneous setting.

Next, when switching from the facsimile transmission mode to the copy mode, "COP" is displayed on the touch panel 5.
If "Y" is selected, the motor 52 rotates to initialize the cam 34 as in the above-mentioned facsimile transmission mode.

No matter which position the cam 34 is, the solenoid
Since the catch claw 37a of 37 is adapted to be caught by the claw 35, the cam 34 is further rotated a quarter turn (90 °) in the direction of arrow c in FIG. 3 from the time when the catch claw 37a of the solenoid 37 is caught by the claw 35. The solenoid 37 is turned on for a time less than the time of rotation), the hook 37a is pulled, and then the solenoid 37 is turned off.
Then, when the hook 37a is released, this time the hook 37a is locked.
Get caught in.

In this way, the solenoid 37 is controlled by the control unit 53.
ON / OFF at a predetermined timing to control the timing of pulling the hook claw 37a, so that the hooking position of the hook claw 37a, that is, the hook claw 37a is hooked on the hook 35,
It is configured to select whether to hook on the nail 36.

When the catch claw 37a is caught at the position of the claw 36 as described above, the restricting member 33 together with the cam 34 becomes
In order to retreat from the contact portion 46a provided on the convex portion 46 of the rack 30 by turning 1/4 (90 °) in the direction of arrow c in FIG. 3,
The guide sliders 2a and 2b can be freely moved to the A4 lateral size position baseline 28a.
It is possible to set the document D of No. 4 in the horizontal direction and execute the copy operation.

When switching from the copy mode to the facsimile transmission mode, the guide sliders 2a and 2b are used.
Back to the position of the size position baseline 28b in the vertical direction of B4 or a position narrower than this, so that the rack of the guide slider 2b is
The contact portion 46a of the convex portion 46 provided on the member 30 returns to the initialization position in the facsimile transmission mode, and the contact portion 46a and the restriction member 33 can be returned to the engageable position.

When the copy mode is switched to the facsimile transmission mode and the original D in the A3 vertical direction is to be transmitted by facsimile, the width of the original D in the A4 horizontal direction and the width of the original D in the A3 vertical size are the same.
Although it is necessary to move a and 2b to the position of the A4 lateral size position baseline 28a, the guide sliders 2a and 2b can be moved to the maximum B4 vertical size position baseline in this state.
Since it can move only up to 28b, the document D in the A3 vertical direction cannot be set on the document table 1.

Therefore, in the present embodiment, when the document D in the A3 vertical direction is stacked on the document table 1, the longitudinal length of the document D in the A3 vertical direction is longer than that of the document table 1 and the extension tray is used. Since the original D cannot be stably stacked unless the original A is used, the original D in the A3 vertical direction is placed on the original table 1
When stacking on top, the extension tray 3 is always opened and extended from the original table 1 for use.

Therefore, the control unit 53 detects the opening / storing information of the extension tray 3 by the photo interrupter 40, and the opening / storing information of the extension tray 3 and the copy mode, the facsimile transmission mode, etc. by the touch panel 5. The movable area of the guide sliders 2a and 2b is changed by combining with the switching information.

That is, when the extension tray 3 is folded and stored in the document table 1 in the facsimile transmission mode, the control unit 53 interrupts the optical path of the photo interrupter 40 by the shielding plate 42 and extends it. Recognizing that the tray 3 is unnecessary, it recognizes that the document D to be used is B4 size or smaller, and the hook 37a of the solenoid 37 is clawed.
The guide sliders 2a and 2b are set so that they can move only up to the size position baseline 28b in the vertical direction of B4.

On the other hand, when the extension tray 3 is opened and extended from the document table 1 in the facsimile transmission mode, the optical path of the photo interrupter 40 is opened to be in a transparent state, and the control unit 53 extends the extension tray 3. By recognizing that the document D in the A3 vertical direction has been set and setting the hook 37a of the solenoid 37 to the position of the hook 36, the guide sliders 2a and 2b are set to the maximum A3 vertical (= A4 horizontal) size position. It is set so that it can be moved to the base line 28a.

Although the document D is prevented from being erroneously set by the above configuration, the guide sliders 2a and 2b happen to be set at the position of the size position baseline 28a in the A4 lateral direction when the facsimile transmission mode is switched. Then, the regulating member 33 comes into contact with the contact portion 46a of the convex portion 46 of the rack 30 and the end portion 46b on the opposite side, and the guide sliders 2a and 2b move to the B position.
4 There is a problem that it cannot move to the center side from the vertical size position base line 28b, and if it is used in that state, it will be A4 in the facsimile transmission mode.
There is a possibility that the document D of the size is erroneously set in the lateral direction and the facsimile transmission is executed.

In this case, the control unit 53 causes the drive knob of the micro switch 32a to move to the rack when the copy mode is switched to the facsimile transmission mode by the touch panel 5.
The guide sliders 2a, 2b are moved to A4 size by contacting the protrusions 50c of 29 and detecting the operation of the microswitch 32a.
Recognizing that it is located at the position of the size position baseline 28a in the lateral direction, the solenoid 37 and the motor 52 are controlled to stop the hooking claw 37a of the solenoid 37 at the position of the claw 36, and the guide slider 2
It is arranged that a and 2b can be moved to the center side.

Then, the user guides the guide sliders 2a, 2
By operating b, the control unit 53 causes the microswitches 32a, 32b, that the guide sliders 2a, 2b have moved to a position narrower than the size position baseline 28b in the vertical direction of B4.
Recognized by the detection information of 32c, at that time, the solenoid 37 and the motor 52 are controlled again to rotate the cam 34 to move the catch claw 37a of the solenoid 37 to the position of the claw 35, and the guide sliders 2a and 2b to the maximum B4. The vertical size position is restored so that it can be moved only up to the position of the base line 28b.

At this time, the A4 lateral size position base line 28a
With the guide sliders 2a and 2b set to, there is a possibility that the A4 lateral direction may be erroneously set in the facsimile transmission mode to perform facsimile transmission. Therefore, when used in the facsimile transmission mode, the extension tray 3 may be stored. Setting position of guide sliders 2a, 2b
That is, when the guide sliders 2a and 2b are set on the size position baseline 28a in the A4 lateral direction, the control unit 53 controls the device driving source 54 to stop the operation of the device, and further, the large-sized display of the touch panel 5 is displayed. The section 48 informs the user of advice such as "please check the setting direction of the document". With the above configuration, the reliability of preventing erroneous setting of the document D is improved.

Further, in the present embodiment, the set position of the guide sliders 2a and 2b is shown in correspondence with the setting direction of the document D of each size depending on which mode is selected between the copy mode and the facsimile transmission mode. The size display mark 4 serving as the display means arranged at is changed in each mode.

As shown in FIG. 3, A4 lateral direction and A3
The vertical display is displayed on the upper cover 13 as “A
A slit having the shape of "3.A4-" is formed, and the surface is covered with a semitransparent sheet. An LED (light emitting diode) 41 is arranged below the slit so as to correspond to each character and mark.
Turning on / off of 41 is controlled by the control unit 53.

For example, when this apparatus is used in the copy mode, as shown in FIG.
All the LEDs 41 corresponding to the display of "A3 / A4-" are lit and displayed. Here, other "B4", "A4
Since "R" does not need to blink, in the present embodiment, silk printing is performed for cost reduction as described above. With such a display, when used in the copy mode, for example, the document D can be set in the A3 vertical direction or the A4 horizontal direction to perform the copy operation.

Next, when transmitting the A4 size document D by facsimile, as shown in FIG. 6, by not opening the extension tray 3, the control section 53 informs the control unit 53 of the document D to be used according to the detection information of the photo interrupter 40. Recognizing that it is smaller than the size of B4 in the vertical direction, turn off all LEDs 41 and display "A3 ・ A4
Erase the display of "-".

By deleting the display of "A3.A4-" in this way, even if the user tries to set the A4 size document D in the horizontal direction, the setting positions of the guide sliders 2a and 2b are not shown. In this direction, it can be recognized that the A4 size original D is set in the horizontal direction without mistakenly setting the A4 size original D in the horizontal direction. The transmission operation can be performed.

Next, when transmitting an A3 size original D by facsimile, as shown in FIG. 7, the extension tray 3 is opened so that the control section 53 detects the original D to be used according to the detection information of the photo interrupter 40. Recognizing that the size is A3 vertical direction, the LEDs 41 corresponding to "A3" and "-" are turned on.

By displaying in this way, the user can set the document D in the A3 vertical direction and carry out the facsimile transmission operation, and the LED 41 corresponding to "A4" is turned off. Therefore, as described above, The A4 size document D is not set in the horizontal direction by mistake.

As described above, the setting direction of the document D can be regulated by turning on / off the LED 41 and confirming the display switching of the size display mark 4, so that the setting direction of the document D is changed. It becomes clearer and can alert the user.

With this configuration, it is not necessary to temporarily store the image information read in the memory to prevent erroneous setting of the document D in the facsimile transmission mode as in the conventional case, and to convert the image vertically and horizontally. The cost of the device can be reduced.

Therefore, it is particularly advantageous in the case of a facsimile apparatus having only a direct transmission function for sequentially performing a facsimile transmission operation without storing image information in the memory.

In the above embodiment, the guide slider 2a,
Although the display of the size display mark 4 for setting 2b is changed, the setting direction of the document D may be displayed on the display unit 48 of the touch panel 5, for example. In this case, the effect as a countermeasure against erroneous setting is not sufficient due to the user's oversight, but no extra device is required, which is advantageous in terms of cost.

In the above embodiment, when the image information is temporarily stored in the memory and has the function of vertical / horizontal conversion, the movable range of the guide sliders 2a and 2b is restricted and the display of the size display mark 4 is switched. Instead, the read image information may be temporarily stored in the memory and the image may be vertically / horizontally converted as in the conventional case, and may be applied only when the direct transmission is used. In this case, an extra memory and a vertical / horizontal conversion circuit are required, which is disadvantageous in terms of cost, but since the document D may be oriented in any direction, operability for the user is improved.

Further, in the above-described embodiment, the switching of the size display mark 4 is applied to the original feeder system, but it may be applied when copying in the book mode and facsimile transmission in the book mode. That is, normally, the same effect can be obtained by displaying the set direction display of the document D printed on the platen glass plate 12 by turning on / off the LED as described above.

In this case, normally, when a document such as a book is placed vertically on the platen glass plate 12, the platen hinge supporting the platen belt 11 or the like is an obstacle, and it is difficult to set the document.
Since it is easy for the user to make a mistake in setting the originals, the effect of preventing erroneous setting is great by configuring as described above.

Further, the micro switches 32a, 32b, 32c
A larger effect can be expected by providing a document size detection sensor configured as described above and configuring the device so that it cannot operate when the document D is erroneously set. .

[0093]

Since the image reading apparatus according to the present invention has the above-described configuration and operation, the operation of the document position restricting means changes in accordance with the copy mode and the facsimile transmission mode, so that each mode is changed. The original setting direction according to is clear, and it is possible to prevent mistakes in facsimile transmission and copying due to incorrect setting.

By changing the movable range of the guide slider that regulates the side edge of the original in accordance with each of the above-mentioned modes, the original cannot be set at the wrong setting position in the original direction, and the display in the original setting direction is overlooked. It is possible to surely prevent erroneous setting of the original due to, for example, and improve the reliability of preventing erroneous setting of the original.

By changing the display of the display means for displaying the set position of the guide slider in accordance with each of the above modes, the display of the document setting direction in each mode becomes clear, and misreading can be prevented so that document errors can be prevented. The reliability of set prevention can be improved.

If the apparatus is configured so as not to operate when the original is set in a direction that is not suitable for each mode, it is possible to check the incorrect setting of the original, and the facsimile due to the incorrect setting of the original is set. Transmission mistakes and copy mistakes can be prevented.

This is particularly advantageous when it is applied to a device which does not have a storage function by a memory and cannot be converted in the vertical and horizontal directions by the memory and has only a direct facsimile transmission mode.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing an overall configuration of an image processing apparatus including an image reading apparatus according to the present invention.

FIG. 2 is a cross-sectional explanatory diagram showing an overall configuration of an image processing apparatus including an image reading apparatus according to the present invention.

FIG. 3 is a perspective explanatory view showing a configuration of a document position restricting unit.

FIG. 4 is a block diagram showing a control system of document position regulating means.

FIG. 5 is a plan view showing the operation of the document position restricting means in the copy mode.

FIG. 6 is a plan view showing the operation of the document position restricting means in a state where the extension tray is stored in the facsimile transmission mode.

FIG. 7 is a plan view showing the operation of the document position restricting means when the extension tray is opened and extended in the facsimile transmission mode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Original document table, 2a, 2b ... Guide slider, 3 ... Extension tray, 4 ... Size display mark, 5 ... Touch panel, 6 ...
Document feeder, 7 ... Document pickup roller, 8 ... Pressing plate, 9 ... Separation belt roller pair, 9a ... Upper belt roller,
9b ... Lower belt roller, 10 ... Document guide, 11 ... Pressure plate belt, 12 ... Document platen glass plate, 13 ... Top cover, 14 ... Operation part, 15 ... Scanner, 16 ... Lens, 17 ... CCD, 18 ... Polygon mirror, 19 ... Laser scanner unit, 20 ... Photosensitive drum, 21a, 21b, 21c ... Recording sheet pickup roller, 22 ... Registration roller pair, 23 ... Recording sheet conveying roller pair, 24 ... Transfer roller, 25 ... Thermal pressure fixing section, 26 ... recording sheet discharge roller pair, 27 ... discharge tray, 28a, 28b, 28
c ... size position baseline, 29,30 ... rack, 31 ... pinion,
29a, 30a, 31a ... Tooth portion, 32a, 32b, 32c ... Micro switch, 33 ... Restricting member, 34 ... Cam, 35, 36 ... Claw, 37 ...
Solenoid, 37a ... Hooking claw, 38a, 38b ... Gear, 39 ... Continuous surface, 40 ... Photointerrupter, 41 ... LED, 42 ... Shielding plate, 43 ... Guide, 44 ... Original conveying roller pair, 45 ... Original discharging roller pair, 46 ... Convex part, 46a ... Contact part, 46b ... Opposite end part, 47 ... Torque limiter, 48 ... Display part, 49a, 49b, 49
c ... Sheet cassette, 50a, 50b, 50c ... Protrusion, 51 ...
Rotating shaft, 52 ... Motor, 53 ... Control unit, 54 ... Device drive source, D
... manuscript, P ... recording sheet

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 1/00-1/00 108 B65H 1/00-3/68

Claims (4)

(57) [Claims] 1. A document stacking unit for stacking a document, a document position restricting unit for restricting a position of a document stacked on the document stacking unit, and a document for carrying a document position-controlled by the document position restricting unit. Conveying means, image reading means for reading image information recorded on the original conveyed by the original conveying means, copy mode for executing recording on a recording sheet based on the image information read by the image reading means, In an image reading apparatus having a facsimile transmission mode in which the image information read by the image reading unit is transmitted to another apparatus, the document position regulating unit is movable in a direction intersecting a document conveying direction with respect to the document stacking unit. And a guide slider for contacting a side edge of the document stacked on the document stacking means to regulate the position of the document, In the facsimile transmission mode, the movable range of the guide slider is restricted so that the user cannot set a document in a direction different from the A4 size vertical direction, and the guide slider is set to a position different from the A4 size vertical direction. The image reading apparatus is characterized in that stop control is performed by detecting a set position of the guide slider. 2. A display means for displaying the set position of the guide slider in correspondence with the size width of the document, and corresponding to which mode is selected between the copy mode and the facsimile transmission mode. The image reading apparatus according to claim 1, wherein display control is performed so as to change a display of the display unit. 3. The image reading apparatus according to claim 1, further comprising a direct transmission function for sequentially performing facsimile transmission without storing the image information read by the image reading unit in a memory. 4. The original stacking means has an extension tray that can be extended to set a long original, and a detection means for detecting the set position of the extension tray and the guide slider is arranged to copy the original. The image reading apparatus according to claim 1 or 2, wherein each of the controls is performed by a selected state of a mode and a facsimile transmission mode and a detection signal from the detection unit.