JP2003076074A - Image reader, image forming device and paper carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader making the work to take out a document caught in a document feeder in the case of the occurrence of such an error that paper is caught in the document feeder and also can prevent the damage of the document in the case of taking out the document, an image forming device and a paper carrying device. SOLUTION: This image reader is provided with a pair of rollers consisting of two rollers coming into contact with each other, installed in a document feeder means and carrying the document while holding it in between, and an upper cover with which the document feeder means is covered and which can be opened/closed. When a document detection means detects the document and a document ejection designation means designates the ejection of the document, a pair of rollers is driven to eject the document from the document feeder means, and the rollers come into contact with each other even in a state where the cover is opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus having a conveyance type image reading means.

[0002]

2. Description of the Related Art Conventionally, an error cancel key of a printer has been used to cancel an error in the printer.

As an operation, when an error such as an ink out error or a paper out error occurs, the user cancels the error content and then presses a key to set the error state of the apparatus to a normal state. , The display is returned to normal, the initialization is performed, and then the normal standby state is restored.

On the other hand, when performing facsimile communication or copying, the original is passed through the original conveying device to read the original. During this process, when the stop key is pressed to interrupt the reading operation, the document is stopped while being sandwiched between the pair of transport rollers in the document transport device. At this time, in an apparatus having a conveyance type image reading means, when the original is taken out when the original is sandwiched by a pair of conveying rollers in the original discharging apparatus, the original is taken out by physically opening the conveying apparatus. .

[0005]

However, when the paper is caught in the pair of transport rollers of the document transport device and remains, the user has to remove the paper.
When you try to pull out the remaining originals when you physically open the transport device and take out the originals, the direction in which you pull out the originals and the rotation direction of the roller pair are opposite, and the originals are very easily damaged. There is a problem that the work of taking out the manuscript is complicated.

The present invention makes it easy to take out a sandwiched original even when the paper remains in the original conveying device, and the original is not damaged when the original is taken out. An object of the present invention is to provide a forming apparatus and a sheet conveying apparatus.

[0007]

SUMMARY OF THE INVENTION The present invention is provided with a pair of rollers which are constituted by two rollers which are in contact with each other and which are installed in an original conveying means and which nips and conveys an original, which covers and opens the original conveying means. When a document is detected by the document detection unit and the document discharge instruction unit instructs the document to be discharged, the roller pair is driven to discharge the document from the document conveying unit, and the upper cover is provided. Even in the open state, the rollers are in contact with each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a document feeder (ADF) 1 according to an embodiment of the present invention.

The document feeder 1 is a facsimile machine FS.
1 is provided.

The document feeder 1 has a document detection sensor (DS) 16 at the document entrance and a document edge detection sensor (DES) 17 at the document discharge port.

The original detection sensor 16 is a sensor for detecting that an original is placed on the original conveying apparatus 1, and is turned ON when the original is present and OFF when the original is not present.

The document edge detecting sensor 17 is used for the document feeding device 1.
This is a sensor that detects the edge of the
When the leading edge of the document touches the document edge detection sensor 17, O
The FF is turned on, and the document trailing edge is located at the document edge detection sensor 17
When it exits, it turns from ON to OFF. When the document edge detection sensor 17 is ON, it can be determined that there is a document in the document feeder 1.

The flat bed 103 is a document table for reading a document through a flat glass, and the image sensor 3
Reference numeral 0 is a sensor for reading a document.

FIG. 2 is an overall block diagram showing a facsimile apparatus FS1 equipped with the document feeder 1.

In the facsimile machine FS1, the CPU
A system control unit 201 of the facsimile apparatus FS1 controls the entire facsimile apparatus FS1.

The ROM 202 is a facsimile machine FS1.
The system control program is stored.

The CPU 201 executes various operations according to the above-described embodiment based on the control program stored in the ROM 202. However, the control program for the CPU 201 is not limited to the ROM 202, and may be floppy (registered trademark). The data is stored in an external storage medium such as a disk or a CD-ROM, which is read by a dedicated reading device, and the RAM (for example, SRAM2
03), and the CPU 201 may decode this and execute it.

The SRAM 203 mainly stores transmission / reception image management data, registration data, partner data, and the like. The DRAM 204 mainly stores image data.

The image processing unit 205 performs various image processing on the image data input by the CS 206. The CS 206 is a contact-type reading sensor that reads an image on a document. The CS 206 is installed inside the document discharge device and forms a document detection sensor 16 and a document edge detection sensor 17. The document edge detection sensor 17 is arranged at the entrance and the document discharge outlet. Similar to the image sensor 30 shown in FIG. 1, a document detection sensor 16 and a document edge detection sensor 17 are arranged.

The modem 207 is for modulating and demodulating a digital signal and an analog signal. NCU208
Is for controlling the public line network.

The BJ printer 209 is a printer which prints by ejecting minute ink droplets from a nozzle onto recording paper by generating bubbles based on the input image data. The operation unit 211 receives various key operations by the user.

The PCI I / F 212 is a facsimile device F.
This is an interface that connects the S1 and the PC 213.
The PC 213 is a host computer that changes various setting data of the facsimile apparatus FS1 and requests activation of various operations via the PCI I / F 212.

The sensor 214 is a sensor for detecting whether or not the document feeder 1 is mounted. Here, the sensor 214 detects whether or not the document feeder 1 is attached. Instead of doing so, the operation unit 211 sets that the document feeder 1 is attached. You may do it.

The motor control unit 215 is a motor control unit that moves the document feeder 1 and the image sensor 30.

FIG. 3 is a diagram showing the operation unit 211 in the facsimile apparatus FS1.

On the operation unit 211, the ten-key unit 301
Is a key group used when registering a telephone number, a fax number, a destination name, etc., and making a copy number or dialing. The one-touch speed-dial key unit 302 is a key group used when making a one-touch speed-dial call. A start / copy key 303 is a key for starting fax transmission and copying.

A stop key 304 is a key for stopping FAX transmission / reception, copying, and other operation operations. If the key is pressed while the document is being conveyed, the document conveyance is stopped. In this way, by pressing the stop key, the originals are immediately stopped, so that it is not necessary for the user to wait until all the originals on the original conveying device are discharged, and the stop key is pressed. Since the document conveyance is not stopped at the page, it can be surely stopped at the page intended by the user. Hook key 305
Is a key used for manual transmission and the like. The reception mode switching key 306 is a key for switching the reception mode such as FAX / TEL mode and manual reception mode.

The reading resolution switching key 307 is used for FAX.
This is a key for switching between the reading resolution and the recording resolution during transmission and copying. The set key 308 is pressed to confirm the setting when registering information and the like.

When the error cancel key 309 is pressed, the error is canceled or the document is automatically ejected. here,
The above-mentioned “error cancellation” indicates error cancellation in the case where an ink out error, a paper out error, a paper size mismatch error, a document jam, and a paper jam error occur. The number of keys is reduced by using the keys that both cancel the error of the device and automatically eject the originals. As the error release key 309,
It is appropriate to use the resume key known as the printer's error clearing key.

By pressing the redial key 310, it is possible to recall the last dialed party. The speed dial / search key 311 is a key for calling a destination telephone number or FAX number registered in the speed dial or searching for a destination name or number of another group.

The pause key 312 is a key for inserting a pause when dialing or registering a number.

The line-in-use / memory-storing operation display lamp 313 is a lamp that lights up when the line is used or when received documents are stored in the memory. Warning lamp 314
Is a lamp that lights up when an error occurs or when there is no ink, toner, or recording paper.

The LCD display 315 displays messages, operation prompts, and various information. When the lever of the document feed lever 316 is set to the left, automatic document feeding is performed, and when the lever is set to the right, manual document feeding is performed. The one-touch speed dial panel 317 can access the function key portion when the panel is opened. Tone key 31
8 uses this key when it wants to make a tone call when using a pulse line.

FIG. 4 is a diagram showing the function key portion that can be seen when the one-touch speed dial panel 317 is opened in the facsimile apparatus FS1.

In the function key section, the data registration key 401 is a key for registering important settings such as user data, speed dial, transmission and reception. The timer transmission key 402 is a key for setting a transmission time for timer transmission.

A polling key 403 is a key for setting a document for polling transmission and for polling and receiving a document from another FAX. The memory reference key 404 is
For documents stored in memory, delete, re-send,
A key for printing a document list.

A ∧∨ search key 405 is a key for scrolling and displaying other options and options in the menu during data registration. <> Cursor key 40
Reference numeral 6 is a key for moving the cursor left / right during data registration. The space key 407 is a key for inputting a space between characters and numbers during data registration.

A clear key 408 is a key for completely erasing input information during data registration. + Plus key 40
A key 9 is used to register a + sign when registering a fax number or a telephone number. The report key 410 is a key for outputting a communication management report.

Next, the document feeder 1 will be described more specifically.

FIG. 5 is a diagram showing the document feeder 1 shown in more detail.

In FIG. 5, an image reading device 60 and a document feeding device 1 mounted on the image reading device 60 are provided. The document feeder 1 is attached to the upper part of the image reading device 60 so as to be openable and closably rotatable, places the document on the platen glass 22, and presses the document when reading the document.

Further, the apparatus main body portion 40 is the original conveying apparatus 1
When it is closed, it acts as a pressure plate for pressing the document, and inside the main assembly 40 of the apparatus, a U-shaped document transport path U is formed.
A turn path 12 is provided. The document placing tray 14 is provided so as to be connected to the upstream end side of the U-turn path 12, and is configured by a part of the upper surface of the apparatus main body 40 so as to be connected to the downstream end side of the U-turn path 12. A document discharge tray 18 is provided.

As described above, by setting the U-turn of the document conveying path, that is, by setting the document feeding direction and the paper discharging direction to be different directions, the document feeding direction and the paper discharging direction can be changed. The installation area of the facsimile apparatus FS1 is made extremely smaller than that in the case of the same direction. However, reducing the installation area makes it difficult to remove the original document remaining in the original document feeder 1, as will be described later.

Further, at the upstream portion of the U-turn path 12, there is a pickup roller 3 which is an original feeding means for abutting the uppermost original S1 of the originals S stacked on the original placing tray 14 and feeding it. A separation pad 4 that is a separation member that forms a separation unit that separates the documents S1 sent by the pickup roller 3 one by one, and a separation roller 5 that is a separation conveyance member that is in pressure contact with the separation pad 4.
A document stopper 20 that regulates the leading end position of the document S stacked on the document placing tray 14 and a document detection sensor 16 that detects the presence or absence of the document S are provided.

Further, on the downstream end side of the U-turn path 12, a pair of document discharge rollers 9 for discharging the document S to the document discharge tray 18 and a document end detection sensor for detecting the front end and the rear end of the document S are detected. And 17 are provided.

Further, the first conveying roller pair 6 and the second conveying roller pair 7 are provided with a U-turn path 12 in order to convey the original S.
It is provided in.

The document holding surface 18a is provided on the document discharge tray 18
Is a document holding surface which is provided on the base end side and holds the rear end of the discharged document S. The upper cover 50 is the device body 4
0 is a cover member that is openable and closable, and is opened to remove the jammed document when the document S is jammed, for example.

The pickup arm 10 is a pickup arm that holds the pickup roller 3 rotatably and in contact with and separates from the original S loaded on the original placing tray 14, and when the original S is sent out. The pickup arm 10 is rotated downward so that the pickup roller 3 is brought into contact with the document S. When the pickup arm 10 rotates downward in this manner, the document stopper 20 is pushed down by the pickup arm 10.

The image reading unit 2 is an image reading unit which is placed on the platen glass 22 and reads a document, and is a contact type image sensor 30 (see FIG. 2) provided below the platen glass 22 and movable left and right. (Shown as CS206).

Here, the contact-type image sensor 30 irradiates the image information surface of the document S with light from an LED array serving as a light source, and reflects light reflected by the image information surface with a SELFOC lens (registered trademark). An image is formed on the sensor element to read image information. When reading a fixed original,
When the original image is read while moving in the left-right direction and the original conveyed by the original conveying device 1 is read, the original is read while stopped at the position shown in FIG.

Note that, in the document feeder 1, the operator sets the document S
When the document S is placed and set on the document placing tray 14, the document S is set from the right side to the left side in the left-right direction of the document conveying apparatus 1 and with the image surface facing upward.
At the time of this document setting, the leading end position of the document S is regulated by the document regulation surface 20e of the document stopper 20, and the document detection sensor 16 detects the presence of the document.

Then, in the image reading device 60, when the operator gives an instruction to start reading from the operation unit 211 shown in FIG. 2, first, the drive unit (not shown) rotates and the pickup arm 10 rotates downward, Depending on the document stopper 20
Is pushed down by the pickup arm 10. Thereafter, the pickup roller 3 comes into contact with the uppermost original S1 of the originals S stacked on the original placing tray 14, and sends out the uppermost original S1.

Next, the uppermost original S1 passes through the inclined surface 20a of the original stopper 20, is separated from other originals by the separating roller 5 and the separating pad 4, and is fed into the U-turn path 12. In addition, U-turn pass 1
The original S1 fed into the inside of the second sheet is conveyed along the U-turn path 12 by the first conveying roller pair 6, and further, the original S is conveyed by the second conveying roller pair 7.
The contact image sensor 30 conveys the document S1 toward a reading position where image information is read.

After that, when the document edge detection sensor 17 detects the leading edge of the document S1, the contact type image sensor 30 is moved at a position where the document S1 is conveyed by a predetermined amount.
The reading of the image information by is started. At this time, the original S1 is pressed against the reading white background plate 8. After the reading is started, the original S1 is picked up by the transparent scooping sheet 19 and moves toward the original discharge roller pair 9.

Next, when the trailing edge of the document S1 is detected by the document edge detection sensor 17, when the predetermined amount has been conveyed from that position, the reading of the image information by the contact image sensor 30 is completed. The document S1 thus read is conveyed toward the document discharge tray 18 by the document discharge roller pair 9 and discharged to the document discharge tray 18.

When the trailing edge of the discharged document S1 passes through the document discharge roller pair 9, the discharged document S1 freely falls and moves along the tilted document discharge tray 18, and eventually comes back to the document holding surface 18a. The sheet is accommodated in the document discharge tray 18 with the end portion held. In this way, the image reading device 60 repeats the above reading operation until the document detection sensor 16 detects the absence of a document.

FIG. 6 is a diagram showing a state in which the upper cover 50 is opened in the document feeder 1 when the document is jammed.

When the upper cover 50 is open, the pickup roller 3, the separating roller 5, the second conveying roller pair 7 and the like are not configured to open the original conveying path up and down together with the upper cover.

The reason for this is as follows. That is, the pickup roller 3 must be pressed against the separating pad 4 with a strong pressing force in order to hold the conveying force. Further, since the second conveying roller pair 7 also conveys the original document to the U-shaped path having a severe bending condition, the original document must be clamped with a force stronger than usual. Therefore, if the document feed path is opened together with the upper cover 50, the upper cover 50 must be reinforced so that the upper cover 50 can exert a considerably strong pressing force. When the upper cover 50 is strengthened in this way, the upper cover 50 becomes expensive.

Similarly, the document discharge roller pair 9 is not open so that the document conveying path can generate a pressing force with a low-priced structure. For this reason, with the rollers 3, 5, and 7 holding the document, the stop key or the like is pressed, the document is jammed, or the memory of the main body becomes full, and the reading must be stopped. As a result, when the document conveyance is stopped, it becomes very difficult to take out the document. On the other hand, by pressing the stop key, it may be possible to eject all the originals on the original conveying device without stopping the original conveyance, but it takes time to eject all the originals. Since the document conveyance is not stopped at the page where the stop key is pressed, it is inconvenient for the user to know which page the stop key was pressed. Therefore, it is preferable to stop the document at the position where the stop key is pressed. In this state, when the upper cover 50 is opened and the remaining document is pulled out in order to take out the document remaining in the document feeder, the direction in which the document is pulled out is opposite to the rotation direction of the roller. It is very easy to damage the original. In particular, when the original is gripped by the two roller pairs of the second conveying roller pair 7 and the original discharge roller pair 9, the force for preventing the original from rotating in the direction opposite to the rotation direction of the rollers becomes stronger, and More easily damaged.

However, in the document conveying apparatus 1, as described above, when the document is stopped with the rollers gripping the document on the document conveying path, the error release key is opened with the upper cover 50 open. When the user presses 309, the document conveying operation is performed, and the document can be easily removed. That is, in the document feeder 1 configured as described above, it is particularly advantageous to have the document discharging operation in addition to the normal document feeding operation.

FIG. 7 is a flow chart showing the operation of discharging the original and releasing the error in the above embodiment. If the document discharge process is performed by this process, the stop key etc. may be pressed before that, the document jam may occur, or the memory of the main unit may become full and the reading may have to be stopped. Due to this, the document conveyance is stopped.

First, when performing the document discharge process, the operation unit 2
At 11, the error release key 309 is pressed. When the error release key 309 is pressed, whether or not the document feeder 1 is attached is determined by the output signal of the sensor 214 (S1). If the document feeder 1 is not present, in order to prevent an unnecessary operation, the document discharge operation is not performed, and the facsimile apparatus FS1 is always cleared of the error (S7).

By canceling the error in this way, it is possible to deal with a model that does not have the document feeding device 1. For example, when the document feeding device 1 is purchased and added after the facsimile device FS1 is purchased. It has the advantage that it can be easily handled.

On the other hand, if the document feeder 1 is present (S1),
The state of the facsimile device FS1 is determined (S2). If the document feeder 1 is in the document reading state (S3) or in the document feeding state (S4), the process ends. this is,
This is because if the document discharge operation or the error clearing operation is performed while the document is normally conveyed and read, an unintended error will occur.

Therefore, in such a state, it is appropriate not to perform the document discharge operation or the like.

Next, when the document is being read by the document feeder 1 (S3), or when the document is not being fed,
For example, in the standby state, the original document in the original document feeder 1 is detected. If the document detection sensor 16 of the document feeder 1
If (DS) is ON (S3), the document discharge operation is performed (S5). In this case, since the original is detected while the original is not being conveyed, the conveyance of the original is interrupted due to an original jam, a stop key being pressed, etc., and the original remains in the original conveying apparatus 1. Is. For this reason, it is in a state where the operator should judge that the document is requested to be discharged. If the document detection sensor 16 is OFF (S
3) Look at the state of the document edge detection sensor 17 of the document feeder 1 (S4). If the document edge detection sensor 17 is ON (S4), the document is recognized as being in the document transport path, and the document is ejected (S5). If the document edge detection sensor 17 is OFF (S4), it is determined whether the facsimile apparatus FS1 has an error (S6). If there is no error, the processing is terminated, and if there is an error, an error canceling operation is performed.

The error cancellation will be described in detail in FIG. Note that this function is not limited to a facsimile machine, a scanner, and a PC transfer as long as it has a reading device. Further, the function to be shared is not limited to the error releasing function, and the number of functions to be given to the keys is not limited to this.

Further, when the above operation is performed and the original is discharged, a message indicating that the original is being discharged is displayed on the display LC.
The message is displayed in D315, and when the document is completely discharged, the corresponding message disappears automatically. As a result, the operator of the facsimile device FS1 can easily recognize that the facsimile device FS1 has received the document discharge instruction.

FIG. 8 is a flow chart showing the error canceling operation in the above embodiment.

First, when the error is cleared, it is detected whether or not the error factor remains (S11). If the error factor remains, the process ends without canceling the error state. The display will notify the operator that the error condition is continuing, and if the error is no ink, the operator will replenish ink, and if an error such as no paper error has occurred, replenish paper. If there is a recording paper jam or the like, the jam is released. In this way, the operator of the facsimile apparatus FS1 cancels the error content.

If no error factor remains (S1
1) The error display is erased (S12). After that, the facsimile apparatus FS1 is initialized (S13), and the error state is released.

According to the above-described embodiment, since the document can be ejected by pressing the button, even if the document is caught in the document conveying device 1, it is possible to save the trouble of opening the document conveying device 1 and taking out the document. The original in the original feeding apparatus 1 can be easily taken out.

In the above embodiment, when an error occurs with a document, the document is ejected by the first error release key, and the error is released by pressing the error release key. However, if the document ejection and the error cancellation are performed at the same time, even if the document ejection is not correctly performed, the error canceling operation is started even in the error state. Since the error clearing operation checks the printer status, the main status, etc., the checking takes time.

In other words, if the document discharge and the error cancellation are executed at the same time, the error canceling operation is performed and it takes time even if only the document discharge is desired, which gives a stress to the user. Further, since the document discharge and the error release are operations having different contents, it is difficult for the user to understand what has been done.

However, according to the above-described embodiment, it is possible to execute the document discharge and the error cancellation while confirming them step by step.
In addition, the user can smoothly discharge the document and cancel the error. That is, in the above-described embodiment, one key can have both the document discharge function and the error cancellation.

That is, in the above-described embodiment, the original document conveying means for conveying the original document, the original document detecting means for detecting the original document in the original document conveying means, and the original document ejection instruction for ejecting the original document in the original document conveying means. A pair of rollers configured by an instruction unit and two rollers which are in contact with each other and which are installed in the document conveying unit and sandwich the document for conveyance; an upper cover which covers the document conveying unit and can be opened and closed; and the document. When the detection unit detects the original document and the original document ejection instruction unit instructs the original document ejection, the original document ejection control unit that drives the pair of rollers to eject the original document from the original document conveyance unit is provided. Even when the is open, the rollers are in contact with each other, so the original can be discharged without the unnatural operation of pulling in the direction opposite to the rotation of the roller, It can be removed without damaging the document has been distilled. Further, it is possible to secure sufficient force for holding the document with a low-priced structure without strengthening the upper cover.

Further, in the above-described embodiment, since the plurality of roller pairs are provided, when the document is sandwiched by the plurality of roller pairs and remains, the original is pulled out in the direction opposite to the rotation of the roller which works more strongly. The original document can be discharged without receiving the resistance force at the time, and therefore, the original document remaining in the apparatus can be taken out without being further damaged. It is possible to secure sufficient force to clamp a document with a low-cost configuration without strengthening the upper cover.

Further, according to the above-mentioned embodiment, the document feeding means includes a document feeding means and a document discharging means, the direction in which the document feeding means conveys the document, and the document discharging means conveys the document. Since the ejecting directions are different from each other, the upper cover is not strengthened, and a low-priced structure can secure a sufficient force for holding an original, and a small installation area can be realized at a low price.

Further, according to the above-mentioned embodiment, there is a mounting state detecting means for detecting that the document conveying means is mounted on the image reading apparatus, and the document discharge instructing means instructs the document discharge, Moreover, when the mounting state detecting means detects that the document conveying means is mounted,
Since the document discharging operation is executed, the apparatus does not perform unnecessary operation, and the document discharging process can be easily added even when the document conveying device is later attached to the model to which the document conveying means is not attached.

Further, according to the above-mentioned embodiment, the document conveying means for conveying the document, the document detecting means for detecting the presence or absence of the document in the document conveying means, and the instruction for discharging the document in the document conveying means are given. An original discharge instruction means for performing, a control means for discharging the original on the basis of the original discharge instruction by the original discharge instruction means, and an operating state detecting means for detecting whether the original conveying means is in the operating state or not. Have,
When the document discharge instructing means instructs the document discharge, the document detecting means detects the document, and when the operating state detecting means determines that the document conveying means is not in the operating state, the control means Since the document is discharged, the device does not operate unnecessarily, and the document discharge process can be easily added to the model without the document conveying means even if the document conveying device is attached later. .

Further, according to the above-described embodiment, when the document discharge instruction unit instructs the document discharge, when the operation state detecting unit determines that the document transport unit is in operation, the document is discharged. Since the operation to perform is not performed, in the state where the document is normally conveyed and read,
It is possible to prevent an unintentional error from occurring by performing the document discharge operation and the error clearing operation.

Further, according to the above-mentioned embodiment, there is a mounting state detecting means for detecting that the document conveying means is mounted, and the document discharge instructing means instructs the document discharge,
When the mounting state detecting means detects the mounting of the document conveying means, the document discharging operation is performed, so that the document conveying device can be installed later on the model to which the document conveying means is not attached without performing unnecessary operation of the apparatus. Even when attached, document discharge processing can be easily added.

Further, the original document transporting means is a means for transporting a document by sandwiching it between a pair of rollers which are in contact with each other, and is provided with an openable upper cover for covering the document transporting path, and even when the upper cover is opened, Since the rollers forming the roller pair are in contact with each other, the original can be discharged without performing an unnatural operation such as pulling out in the direction opposite to the rotation of the rollers, and therefore, the original remaining in the apparatus is not damaged. You can take it out. Further, it is possible to secure a force capable of sufficiently sandwiching the document with a low-priced structure without strengthening the upper cover.

Further, according to the above-mentioned embodiment, the document conveying means for conveying the document, the document detecting means for detecting the presence or absence of the document in the document conveying means, and the instruction for discharging the document in the document conveying means are given. When the document discharge instruction means for performing, the error canceling means for canceling an error of the image forming apparatus, and the document discharge instruction means instruct the document discharge, and the document detecting means detects the document, the operation for discharging the document is performed. ,
Since the document ejection instruction means commonly issues an instruction to eject the document in the document conveying means and an instruction to cancel the error of the apparatus, the document ejection processing is performed by the common key without increasing the number of keys. Both the device and the error canceling process of the device can be appropriately processed according to the situation.

Further, according to the above-mentioned embodiment, when the document discharge instructing means instructs the document discharge, and the document detecting means detects the absence of the document, the error of the image forming apparatus is canceled. The operator can appropriately perform the processing according to the state without performing the error processing he / she wants to perform.

Further, according to the above-mentioned embodiment, there is provided a detecting means for detecting that the document conveying means is mounted,
When the mounting state detecting unit detects mounting of the document conveying unit when the document discharging instruction unit instructs the document discharging, the document discharging operation is performed, so that the apparatus does not perform unnecessary operation and the document is discharged. Even when the document conveying device is later attached to the model to which the conveying unit is not attached, the document discharging process can be easily added.

Further, according to the above-described embodiment, the original document transporting means is configured by a transporting means for sandwiching and transporting the original document by a pair of rollers which are in contact with each other, and has an openable and closable upper cover for covering the original document transporting device. Even when the upper cover is opened, the rollers of the above-mentioned conveying means are in contact with each other, so that the original can be discharged without performing an unnatural operation such as pulling out in the direction opposite to the rotation of the rollers, and therefore the original remains in the apparatus. You can take out the original without damaging it. Further, it is possible to secure a force capable of sufficiently sandwiching the document with a low-priced structure without strengthening the upper cover.

The above embodiment may be applied to a device other than the above-described document feeding device as long as it has a document detection sensor. Further, if it is possible to detect the presence of a document in the document feeding device, this may be used instead of the document detection sensor.

Further, in the above-described embodiment, an example in which a document is sandwiched and conveyed by a pair of rollers in contact with each other has been described, but the above-described embodiment is applied to a case where a document is conveyed not only by rollers but by a pressing force of a member in contact with each other. You may.

Further, in the above embodiment, the document conveying device has been described, but not limited to the document conveying device, a device for sandwiching and conveying a sheet by a member pair contacting each other does not have a structure for separating the member pair. For example, with the configuration similar to that of the above-described embodiment, it is easy to take out the remaining paper, and the paper is not damaged when taking it out.

[0092]

According to the present invention, even when a paper sheet is caught and remains in the document feeder, it is easy to take out the sandwiched original sheet, and the original sheet is not damaged when the original sheet is taken out. Produce an effect.

[Brief description of drawings]

FIG. 1 is a document feeder (AD) according to an embodiment of the present invention.
F) is a diagram showing 1.

FIG. 2 is an overall block diagram showing a facsimile apparatus FS1 equipped with a document feeder 1.

FIG. 3 is an operation unit 211 of the facsimile apparatus FS1.
FIG.

FIG. 4 is a diagram showing a function key portion that is visible when the one-touch speed dial panel 317 is opened in the facsimile apparatus FS1.

5 is a diagram showing in more detail the document feeder 1 shown in FIG.

FIG. 6 is a diagram showing a state in which the upper cover 50 is opened in the document feeder 1 when the document is jammed.

FIG. 7 is a flowchart showing operations of document ejection and error cancellation in the above-described embodiment.

FIG. 8 is a flowchart showing an error canceling operation in the above embodiment.

[Explanation of symbols]

FS1 ... Facsimile device, 1 ... Document feeder, 3 ... Pickup roller, 6 ... the first transport roller pair, 7 ... a pair of second conveying rollers, 9: pair of document discharge rollers, 12 ... U Turn Pass, 14 ... manuscript tray, 16 ... Original detection sensor, 17 ... Document edge detection sensor, 18 ... Original discharge tray, 22 ... Platen glass, 30 ... Contact image sensor, 40 ... the main body of the document reading device, 103 ... flat bed, 201 ... CPU, 202 ... ROM, 203 ... SRAM, 204 ... DRAM, 205 ... Image processing unit, 206 ... CS, 207 ... modem, 208 ... NCU, 209 ... BJ printer, 211 ... Operation unit, 212 ... PC interface, 213 ... PC.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naomi Nakamura             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Makoto Satake             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Takashi Imai             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation (72) Inventor Toshiaki Saito             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation F-term (reference) 2H076 BA08 BA24 BA33 BA45 BA56                       BA65 BB05                 3F048 AA04 AA05 AB02 BA02 BB02                       BC09 BD01 BD02 BD03 CA08                       CB01 CC03 DA04 DA06 EA03                       EA07 EA12 EB02 EB12 EB15                       EB23 EB24                 3F049 AA04 AA10 CA32 DA12 DB02                       EA28 EA29 LA05 LA07 LB02

Claims (15)

[Claims] 1. A document transporting unit for transporting a document; a document detecting unit for detecting a document in the document transporting unit; a document discharge instructing unit for instructing to discharge the document in the document transporting unit; A pair of rollers that are formed by two rollers that are in contact with each other and that are installed in the original document transporting means and transport the document while sandwiching it; an upper cover that covers the original document transporting means and that can be opened and closed; Detect and
In addition, when the document discharge instructing means gives an instruction to discharge the document, it has a document discharge control means for driving the roller pair to discharge the document from the document conveying means; An image reading apparatus, wherein the rollers are in contact with each other. 2. The image reading device according to claim 1, wherein a plurality of the roller pairs are provided. 3. The document feeding means according to claim 1, wherein the document feeding means includes a document feeding means and a document discharging means, the direction in which the document feeding means conveys a document, and the document discharging means discharges the document. An image reading apparatus, which is different in the direction of movement. 4. The apparatus according to claim 1, further comprising mounting state detecting means for detecting that the document conveying means is mounted on the image reading device, the document discharging instructing means instructing document discharging, and An image reading apparatus, which executes a document discharging operation when the mounting state detecting unit detects that the document conveying unit is mounted. 5. A document transporting unit for transporting a document; a document detecting unit for detecting the presence or absence of a document in the document transporting unit; a document discharge instructing unit for instructing to discharge the document in the document transporting unit; Based on the document discharge instruction from the document discharge instruction unit, a control unit that discharges a document; and an operation state detection unit that detects whether the document conveyance unit is in an operating state; When the instructing means gives an instruction to eject the original, the original detecting means detects the original, and when the operating state detecting means determines that the original conveying means is not in the operating state, the control means ejects the original. An image reading apparatus characterized by performing an operation of causing the image reading apparatus. 6. The operation of ejecting a document according to claim 5, wherein when the document ejection instructing unit instructs the document ejection, the operation state detecting unit determines that the document conveying unit is in operation. An image reading apparatus characterized by not performing. 7. The apparatus according to claim 5, further comprising mounting state detecting means for detecting that the document conveying means is mounted, wherein the document discharging instructing means instructs document discharging, and the mounting state detecting means operates as described above. An image reading apparatus, which performs a document discharge operation when detecting attachment of a document conveying unit. 8. The document transporting means according to claim 5, wherein the document transporting means is a means for transporting a document by sandwiching it between a pair of rollers in contact with each other, and an openable upper cover for covering the document transporting path is provided, and the upper cover is opened. The image reading apparatus is characterized in that the rollers forming the roller pair are in contact with each other even in the open state. 9. An original conveying means for conveying an original; a document detecting means for detecting the presence or absence of an original in the original conveying means;
Original discharge instruction means for issuing an instruction to discharge the original in the original conveying means; error canceling means for canceling an error of the image forming apparatus; the original discharge instructing means instructing the original discharge, and the original detecting means When a document is detected, an operation of discharging the document is performed, and the document discharge instruction unit commonly issues a command to discharge the document in the document conveying unit and a command to cancel the error of the apparatus. Image forming apparatus. 10. The method according to claim 9, wherein when the document ejection instructing means instructs document ejection,
An image forming apparatus, which cancels an error of the image forming apparatus when the document detecting unit detects that there is no document. 11. The apparatus according to claim 9, further comprising detection means for detecting that the document conveying means is mounted, and when the document discharging instruction means instructs document discharging, the mounting state detecting means is the above-mentioned. An image forming apparatus, which performs a document discharge operation when detecting attachment of a document conveying unit. 12. The document transporting means according to claim 9, wherein the document transporting means comprises transporting means for transporting a document by sandwiching it between a pair of rollers in contact with each other, and having an openable and closable upper cover for covering the document transporting device. An image forming apparatus characterized in that the rollers of the above-mentioned conveying means are in contact with each other even in the open state. 13. A paper transporting means for transporting a paper; a paper detecting means for detecting a paper in the paper transporting means; a stopping means for stopping the transport of the paper by the paper transporting means; A sheet discharge instruction means for instructing to discharge the sheet; a pair of members configured by two members in contact with each other, installed in the sheet transport means, and transporting the sheet sandwiching the sheet in the sheet transport path; When the paper is stopped by the means, the paper detection means detects the paper, and when the paper discharge instructing means instructs the paper to be discharged, the member pair is driven and the paper conveying means is operated. And a document ejection control unit for ejecting a document, wherein the pair of members in contact with each other do not open the sheet conveyance path. 14. The sheet conveying apparatus according to claim 13, wherein the member pair is a roller pair. 15. The paper conveying means according to claim 13, wherein the paper conveying means includes a paper feeding means and a paper discharging means, and a direction in which the paper feeding means conveys the paper and the paper discharging means discharges the paper. A paper transporting device, characterized in that the directions in which it is moved are different from each other.