JP5885705B2 - Image reading device - Google Patents

Description

  The present invention relates to an image reading apparatus.

  2. Description of the Related Art Conventionally, an image forming apparatus such as a digital copying machine is provided with an image reading device that reads an image of a document, and an image is formed on a recording sheet based on an image read by the image reading device. Here, the image reading apparatus is referred to as an automatic document feeder (hereinafter referred to as ADF (Auto Document Feeder)) that conveys a document from a document stacking unit to a discharge unit provided below the document stacking unit via a reading position. ) Is provided.

  In the ADF, since the original is discharged to the discharge unit and the original is stacked on the discharge unit, the user removes the original from the discharge unit. Here, a problem that the user forgets to remove the discharged document from the discharge unit may occur.

  Therefore, there is a technique for providing illumination for irradiating the discharge unit in order to prevent the user from forgetting to take the document (see Patent Document 1). By illuminating the discharge part with illumination, the user is aware that the original remains in the discharge part and prevents the user from forgetting to remove the original. Specifically, when the document whose image has been read is discharged to the discharge unit, the document is irradiated with light by illumination. In order to save power, the irradiation is terminated after a predetermined time has elapsed since the light irradiation was started (for example, after about 10 seconds).

JP 2008-10902 A

In the configuration of the conventional example, the convenience for the user is not sufficient. In other words, the document is Tsu Der designed to inform the user that forgot to take that forgot to take to the discharge unit, it has not been taken into account with respect to the previous of the document that the user has forgotten to take.

  An object of the present invention is to provide an image reading apparatus that is highly convenient for the user.

The image reading apparatus according to the present invention includes a document stacking unit on which a document to be fed is stacked, a document detection unit that detects that a document is stacked on the document stacking unit, and a document stacked on the document stacking unit. A document conveying unit that conveys the document, an image reading unit that reads an image of the document conveyed by the document conveying unit, a document discharge unit that discharges the document read by the image reading unit, and a document discharge unit A discharged document detecting means for detecting the discharged document, an illuminating means for illuminating the document discharge section, the document detecting means detecting that the document is loaded on the document stacking section, and the document discharge When the discharged document detection means detects the original of the original, the illumination means is turned on, and even if the original detection means detects that the original is stacked on the original stacking section, the original of the original discharge section is removed. An image reading apparatus characterized by comprising a control means for the document detection means is controlled so as not to light the illumination means to be detected, the. The image reading apparatus of the present invention includes a document stacking unit on which a document to be fed is stacked, a document detection unit that detects that a document is stacked on the document stacking unit, and a document stacking unit that is stacked on the document stacking unit. A document conveying unit that conveys the original document, an image reading unit that reads an image of the document conveyed by the document conveying unit, a document discharge unit that discharges the document read by the image reading unit, and the document discharge unit Illuminating means for illuminating the document, and control for lighting the illuminating means before the document conveying means conveys the document in response to the document detecting means detecting that the document is loaded on the document stacking unit And an image reading apparatus.
The image reading apparatus of the present invention includes a document stacking unit on which a document to be fed is stacked, a document detection unit that detects that a document is stacked on the document stacking unit, and a document stacking unit that is stacked on the document stacking unit. A document conveying unit that conveys the original document, an image reading unit that reads an image of the document conveyed by the document conveying unit, a document discharge unit that discharges the document read by the image reading unit, and the document discharge unit Illuminating means for illuminating the document, and control means for turning on the illumination means in response to the detection of the document loaded on the document stacking section by the document detection means. An image reading apparatus.

According to the present invention, user convenience is improved .

1 is a diagram illustrating a schematic configuration of a copying machine including an image reading apparatus according to an embodiment of the present invention. 1 is a diagram showing an outline of a copying machine including an image reading apparatus according to an embodiment of the present invention. Sectional drawing of ADF which concerns on this invention. 6 is a flowchart showing an embodiment of document reading processing according to the present invention . Flow chart illustrating a second embodiment of a document reading processing according to the present invention. Control block diagram.

FIG. 1 is a schematic diagram showing a configuration of a copying machine A provided with an image reading apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating main components of the image reading apparatus. FIG. 3 is a cross-sectional view of the image reading apparatus. Figure 4 is a flow chart of the operation of the lamp as the illumination means associated with the document reading processing of the image reading apparatus of the embodiment. FIG. 5 is a flowchart relating to the operation of the lamp in the second embodiment. FIG. 6 is a control block diagram of the image reading apparatus.

  As shown in FIG. 1, a copying machine A as an image forming apparatus includes an image reading device 2 that reads an image of a document, and an image processing unit that performs image processing such as density correction processing on the image read by the image reading device 2. 3. Further, the copying machine A includes an image forming unit 4 that transfers and fixes toner or the like based on the image data that has been subjected to image processing by the image processing unit 3, and a control unit 1 that controls the entire copying machine A. It has.

Next, a schematic configuration of the image reading apparatus 2 will be described with reference to a perspective view of FIG.
The image reading apparatus 2 includes an image reading apparatus main body 902 that includes a reading device for reading an image of a conveyed document, and a document conveying device 901 that conveys the document.

  The document transport device 901 includes a document stacking unit 21 on which a document whose image is to be read is stacked, and a feeding document detection sensor 22 as a document detection unit for detecting that a document is stacked on the document stacking unit 21. Further, the document transport device 901 includes a document transport unit 23 that transports a document on the document stacking unit 21, and a document after an image is read by the image reading device main body 902 while being transported by the document transport unit 23. The document discharge unit 25 is provided. The document discharge unit 25 is disposed below the document stacking unit 21.

  The document discharge section 25 is provided with a lamp 26 as an illuminating means and a discharged document detection sensor 28 as a discharged document detection means for detecting that a document has been discharged to the document discharge section 25 (FIG. 2 ( B)). The lamp 26 as the irradiating means emits light so as to irradiate the discharged document. The lamp 26 is provided below the document stacking unit 21. The lamp 26 is disposed on the side where the user operating the image reading apparatus 2 (copier A) stands (the front side of the apparatus). Here, the “front side of the device” is a side on which the user stands when operating the operation unit that performs operation input to move the device.

The configuration of the image reading apparatus 2 and the outline of the reading operation will be described with reference to the cross-sectional view of FIG.
The image reading apparatus main body 902 is provided with a platen glass 24 on the upper surface. The image reading apparatus main body 902 includes a plurality of mirrors 303 that reflect light reflected from a document, a lens 302 that collects light, and a CCD (Charge Coupled Device) 301 as image reading means.

  The document transport unit 23 includes a feeding roller 202, a separation roller 203, a registration roller 205 unit, and transport rollers 206 and 207. The document transport unit 23 further includes a platen roller 208, a post-reading roller 209, and a discharge roller 210.

  A document 201 on the document stacking unit 21 is fed into the document transport device 2 by a feed roller 202 located at the top of the document stacking unit, and is separated and transported one by one by a separation roller 203 and a separation pad 204. Documents separated one by one are aligned at the leading edges of the registration rollers 205. The document whose front end is aligned by the registration roller 205 is conveyed by the conveyance roller 206 and the conveyance roller 207, and an image is read while being conveyed at a reading position where the platen roller 208 is provided.

  The image of the document is read by reflecting the reflected light from the document by the plurality of mirrors 303, condensing by the lens 302, and guiding it to the CCD 301. The document after the image of the document is read passes through the post-reading roller 209 and is discharged to the document discharge unit 25 by the discharge roller 210. The above-described feeding operation for feeding (conveying) the original to be read is continued until all the originals stacked on the original stacking unit 21 disappear from the original stacking unit 21.

  FIG. 6 is a control block diagram of the image reading apparatus 2 according to the present embodiment. The control unit 1 receives signals from the fed document detection sensor 22 and the discharged document detection sensor 28 and signals from the operation unit of the image reading apparatus 2 (common to the operation unit of the copying machine A in this case). The control unit 1 controls the document conveying unit 23 and the lamp 26.

Then in accordance with the flowchart of FIG. 4, the operation of the lamp 26 due to the reading processing of the document is performed by the control unit 1 in the image reading apparatus 2 of the embodiment will be described.

  The control unit 1 determines whether or not the document on the document stacking unit 21 has been detected by the feeding document detection sensor 22 (S31). When the feeding document detection sensor 22 detects a document, that is, when a document is stacked on the document stacking unit 21, the process proceeds to (S32), the control unit 1 turns on the lamp 26, and the document discharge unit 25 is irradiated. The control unit 1 controls the document conveyance unit 23 so as to start document conveyance (S33). When the control unit 1 finishes the document conveyance (S34), the control unit 1 ends the lighting of the lamp 26 to the document discharge unit 25.

  As described above, in this embodiment, when a user stacks (sets) a document on the document stacking unit 21, the lamp 26 that is an irradiation unit is turned on to irradiate the document discharge unit 25 with light. Therefore, when a document that the previous user has forgotten to be taken is in the document discharge unit 25, the lamp 26 emits light and the lamp 26 irradiates the document discharge unit 25. Can be noticed by users.

  Therefore, the next user takes out the remaining document and then reads his / her original set on the document stacking unit 21. Accordingly, the original document of the user who has been forgotten to be removed by the original discharge unit 25 and the original document of the next user which has been discharged to the original discharge unit 25 after image reading are prevented from being mixed in the original discharge unit 25. be able to. In addition, it is possible to prevent the next user from bringing not only his own original but also the previous user's original. Furthermore, it is possible to prevent the occurrence of a problem such that a large amount of user documents before being forgotten to be removed by the document discharge unit 25 are in the document discharge unit 25 and a paper jam occurs at the discharge port.

Next, according to the flowchart of FIG. 5, a second embodiment of the present invention will be described for the operation of the lamp accompanying the document reading process executed by the control unit 1 in the copying machine A.

  In S <b> 41, the control unit 1 determines whether a document is set on the document stacking unit 21 based on a signal from the feeding document detection sensor 22. If the control unit 1 determines that a document is set on the document stacking unit 21 by the determination in S41, the control unit proceeds to S42 and determines whether there is a document in the document discharge unit 25 based on a signal from the discharged document detection sensor 28. 1 is judged.

  When it is detected in S42 that there is a document in the document discharge unit 25, the process proceeds to S43, where the control unit 1 turns on the lamp 26 and causes the lamp 26 to irradiate the document discharge unit 25.

  The process proceeds to S <b> 44, and the control unit 1 determines from the signal from the discharged document detection sensor 28 whether the document in the document discharge unit 25 has been removed. If the document is not removed from the document discharge unit 25 in S44, a paper feed start signal is waited (S45). Note that the paper feed start signal here is generated when a reading (copying) start button in the operation unit is pressed.

  When the control unit 1 receives the paper feed start signal (YES in S45), the document feeding operation is started and the documents stacked on the document stacking unit 21 are continuously fed one by one. While the document feeding operation is being performed, the lamp 26 remains lit.

  When the control unit 1 recognizes that all of the originals loaded on the original stacking unit 21 have been fed and the originals are no longer in the original stacking unit 21 based on a signal from the feeding original detection sensor 22 (YES in S47). ), The document feeding operation is terminated (S48). Further, the control unit 1 causes the lamp 26 to emit light so that the lamp 26 blinks in response to the end of the document feeding operation (S49). That is, the control unit 1 switches the light emission state of the lamp 26 that has been lit during the feeding operation to blinking after the feeding operation is completed.

  If the control unit 1 determines that the document has been removed from the document discharge unit 25 based on the signal from the discharged document detection sensor 28 (YES in S50), the lamp 26 is turned off (in this case, the blinking ends) (S52). Even if the document is not removed from the document discharge unit 25, the lamp 26 is turned off (S52) when a predetermined illumination time has elapsed after the feeding operation is completed (YES in S51). In this embodiment, the predetermined illumination time is set to 10 seconds.

  When the control unit 1 determines that there is no document in the document discharge unit 25 in S42, it waits for a paper feed signal (S53). That is, when the control unit 1 determines that there is no document in the document discharge unit 25 in S42, the control unit 1 waits for a paper feed start signal without turning on the lamp 24.

  When the paper feed start signal is received (YES in S53), the document feeding operation is started (S54) and the control unit 1 turns on the lamp 24. In other words, the lamp 26 is turned on during the feeding operation in which the documents stacked on the document stacking unit 21 are continuously fed one by one. Thereafter, the process proceeds to S47.

  In S44, if the document is removed from the document discharge unit 25 by the signal from the discharged document detection sensor 28 before the control unit 1 receives the paper feed start signal while the lamp 26 is lit, the control unit 1 If it is determined (YES in S44), the lamp is turned off (S56), and the process proceeds to S53.

  In the present embodiment described above, when a user stacks (sets) a document on the document stacking unit 21, the lamp 26 emits light, so that the next user can notice the document that the previous user forgot to take. The following effects are also achieved.

  When the user stacks (sets) a document on the document stacking unit 21, the lamp 26 is caused to emit light when there is a document in the document discharge unit 25. In other words, even if the user loads (sets) a document on the document stacking unit 21, if there is no document in the document discharge unit 25, the lamp 26 is not turned on, which contributes to energy saving.

  Since the lamp 26 provided in the document discharge unit 25 is turned on during the document feeding operation, the user can easily recognize the portion to be discharged.

  Further, a characteristic control is performed in which the control unit 1 controls the lamp 26 so as to switch the light emission state of the lamp 26 lit during the document feeding operation to blinking in response to the end of the feeding operation. By changing the light emission state under this characteristic control, the user's attention can be drawn to the document discharge unit 25 at the end of the feeding operation. Accordingly, the user can be made aware that the discharge of the document has been completed, so that it is possible to prevent the user from forgetting to remove the document from the document discharge unit. In other words, this characteristic control solves the problem of the prior art that simply turning on the lamp when the document is ejected is insufficient to prevent forgetting to remove the document.

  In any of the above-described embodiments, it has been described that the lamp 26 directly illuminates the document loaded on the document discharge unit. However, if the lamp 26 provided in the document discharge unit 25 is emitted even if the stacked document is not directly irradiated, the user is prompted to confirm the document discharge unit 25, so that the document is discharged and stacked. It is not always necessary to directly irradiate the original with a lamp. Even if the lamp 26 is provided on the document discharge section 25 below the document stacking section 21, if the lamp 26 is disposed on the front side of the image reading apparatus 2 (copier 2) as described above, the user can Since it becomes easy to confirm the light emission of the lamp | ramp 26, it is preferable. Further, it is preferable to provide the lamp 26 so that the light 27 from the lamp 26 is directed to the front side of the apparatus as shown in FIG. 2 because the user can easily notice the light from the lamp 26.

  In any of the above-described embodiments, the light emission of the lamp 26 corresponding to the setting of the original on the original stacking portion 21 is described as being lit. However, the light emission of the lamp 26 corresponding to the setting of the original is performed. The state may be blinking.

DESCRIPTION OF SYMBOLS 21 Document loading part 22 Feed document detection sensor 23 Document conveyance part 25 Document discharge part 26 Lamp (irradiation means)
27 Irradiation light 28 Ejected document detection sensor

Claims (11)

A document stacking unit on which a document to be fed is stacked;
A document detecting means for detecting that a document is stacked on the document stacking section; a document transporting means for transporting a document stacked on the document stacking section;
Image reading means for reading an image of a document conveyed by the document conveying means;
A document discharge section for discharging a document read by the image reading means;
Discharged document detection means for detecting the document discharged to the document discharge unit;
Illumination means for illuminating the document discharge section;
When the document detection unit detects that a document is stacked on the document stacking unit and the discharged document detection unit detects a document on the document discharge unit, the illumination unit is turned on, and the document is stacked on the document stacking unit. Control means for controlling so that the illumination means is not lit unless the original detection unit detects the original of the original discharge portion even if the original detection means detects that the original is detected. An image reading apparatus.   The image reading apparatus according to claim 1, wherein when the discharged document detection unit detects that the document is no longer in the document discharge unit, the control unit turns off the illumination unit.   The control unit performs a feeding operation for feeding a document from the document stacking unit and discharging the document to the document discharge unit on the document stacking unit even in a state where there is a document discharged to the document discharge unit. The image reading apparatus according to claim 2, wherein the illumination unit is turned off after a predetermined time has elapsed since the completion of the operation for all the originals. A document stacking unit on which a document to be fed is stacked;
Document detection means for detecting that a document is stacked on the document stacking unit;
A document conveying means for conveying the document stacked on the document stacking unit;
Image reading means for reading an image of a document conveyed by the document conveying means;
A document discharge section for discharging a document read by the image reading means;
Illumination means for illuminating the document discharge section;
And a control unit that turns on the illumination unit before the document conveying unit conveys the document in response to the document detecting unit detecting that the document is loaded on the document stacking unit. An image reading apparatus. A document stacking unit on which a document to be fed is stacked;
Document detection means for detecting that a document is stacked on the document stacking unit;
A document conveying means for conveying the document stacked on the document stacking unit;
An image reading unit that reads an image of a document conveyed by the document conveying unit; a document discharge unit that discharges a document read by the image reading unit;
Illumination means for illuminating the document discharge section;
An image reading apparatus comprising: a control unit that turns on the illumination unit in response to the document detection unit detecting that a document is stacked on the document stacking unit. A discharge document detection means for detecting a document discharged to the document discharge unit;
When the document detection unit detects that a document is stacked on the document stacking unit and the discharged document detection unit detects a document on the document discharge unit, the illumination unit is turned on, and the document is stacked on the document stacking unit. The control means controls the lighting means not to light up unless the original detection means detects the original of the original discharge section even if the original detection means detects that the original is detected. The image reading apparatus according to claim 4 or 5.   The control means causes the illuminating means to emit light when a feeding operation of feeding the documents stacked on the document stacking section one by one and discharging them to the document discharge section is performed, and the feeding The image reading apparatus according to claim 1, wherein the light emission state of the illumination unit is changed with the end of the feeding operation.   8. The control unit according to claim 7, wherein the control unit continuously lights the illumination unit during the feeding operation, and switches the light emission state of the lighting unit from continuous lighting to blinking when the feeding operation ends. The image reading apparatus described.   The image reading apparatus according to claim 1, wherein the document discharge unit is disposed below the document stacking unit. A document stacking unit on which a document to be fed is stacked;
Document detection means for detecting that a document is stacked on the document stacking unit;
A document conveying means for conveying the document stacked on the document stacking unit;
Image reading means for reading an image of a document conveyed by the document conveying means;
A document discharge section for discharging a document read by the image reading means;
Discharged document detection means for detecting the document discharged to the document discharge unit;
A lamp provided in the document discharge section;
An image forming unit that forms an image on recording paper based on the image read by the image reading unit;
When the document detection unit detects that a document is stacked on the document stacking unit and the discharged document detection unit detects a document on the document discharge unit, the lamp is turned on, and the document is stacked on the document stacking unit. Control means for controlling the lamp not to be lit unless the original detection unit detects the original of the original discharge unit even if the original detection means detects that the original is detected. Image forming apparatus. 10. The document conveying unit according to claim 1, wherein the document conveying unit can start conveying a document stacked on the document stacking unit in response to a feeding start signal in a state where the illumination unit is turned on. The image reading apparatus described in 1.

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