WO2022030302A1 - Dispositif de lecture d'images et dispositif de formation d'images - Google Patents

Dispositif de lecture d'images et dispositif de formation d'images Download PDF

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Publication number
WO2022030302A1
WO2022030302A1 PCT/JP2021/027736 JP2021027736W WO2022030302A1 WO 2022030302 A1 WO2022030302 A1 WO 2022030302A1 JP 2021027736 W JP2021027736 W JP 2021027736W WO 2022030302 A1 WO2022030302 A1 WO 2022030302A1
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WIPO (PCT)
Prior art keywords
image
unit
document
reading
individual
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PCT/JP2021/027736
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English (en)
Japanese (ja)
Inventor
望 稲見
Original Assignee
京セラドキュメントソリューションズ株式会社
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Priority to JP2022541455A priority Critical patent/JPWO2022030302A1/ja
Publication of WO2022030302A1 publication Critical patent/WO2022030302A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals

Definitions

  • the present invention relates to an image reading device and an image forming device, and more particularly to a technique for cutting out image data.
  • An image reading device that optically reads a document placed on a contact glass with a reading sensor to generate image data is provided in an image forming device such as a multifunction device.
  • a reading sensor a CCD (Charge Coupled Device) image sensor or a CIS (Contact Image Sensor) is used.
  • Patent Document 1 discloses an image reading device having an auto crop function that automatically cuts out only a part of image data indicating a manuscript from the read image data.
  • the auto crop function detects the four sides (edges) of the document by specifying the edge position in the scanned image data, and the area surrounded by the detected four sides is determined as the area to be cut out from the image data. And only the image data of the original is automatically cut out.
  • Patent Document 2 in order to reduce the glare of the user, the document cover is provided when the document is read, based on the open detection signal from the switch that detects the opening / closing of the document cover (platen cover) covering the contact glass.
  • An image reading device for notifying a user that the document mounting table is open is disclosed.
  • the document When using the auto crop function, the document may be read with the document cover (platen cover) open to the document mounting table (that is, the document cover is open).
  • the CCD image sensor In an image reader in which a CCD image sensor is used as a reading sensor, the CCD image sensor is less affected by ambient light when the document cover is open, so the image should be cut out normally by the auto crop function. Can be done.
  • CIS image reading device in which CIS is used as a reading sensor
  • CIS is greatly affected by ambient light when the document cover is open, so that detection / cutting of the document edge fails, and the document is erroneously detected / not detected. Detection may occur. That is, it may not be possible to cut out an image normally by the auto crop function.
  • Patent Document 2 is merely a technique for notifying the user that the document cover is in the open state, and in an image reading device using CIS, auto cropping is performed when the document cover is in the open state. The above problem cannot be solved if it is executed.
  • the present invention has been made to solve the above problems, and in an image reader using CIS, when the document cover is in the open state, the auto crop function falsely detects or does not detect the document.
  • the purpose is to prevent.
  • the image reading device is provided with a document mounting table having a document mounting surface on which a document is placed, and a document mounting surface that can be opened and closed with respect to the document mounting surface.
  • a document cover that covers the document placed on the document mounting surface when the document cover is closed, an open / close detection unit that detects the open or closed state of the document cover, a light source, and a reading sensor.
  • the image is emitted from the light source along the main scanning direction toward the document placed on the document mounting surface, and the light source and the reading sensor are moved in the sub-scanning direction.
  • An image reading unit that scans a document and receives the reflected light from the document by the reading sensor to read the image of the document, and a storage unit that stores the type information of the reading sensor included in the image reading unit in advance. It is provided with an individual image cutting unit that cuts out an individual image independent for each document from the image data obtained by reading by the image reading unit, an operation unit operated by the user, a notification unit, and a control unit. When the operation unit is instructed to cut out the individual image by the individual image cutting unit, the control unit detects the open state of the document cover by the open / close detection unit and stores the image.
  • the notification unit When it is determined that the type information stored in advance in the unit is information indicating the contact image sensor, the notification unit notifies that the document cover is in the open state, and the image reading unit reads the image of the document.
  • the control unit determines that the closed state of the document cover is detected by the open / close detection unit, the image reading unit is made to read the image of the document, and the individual image cutting unit is used. , The individual image is cut out from the image data obtained by the reading by the image reading unit.
  • the image forming apparatus in the present invention includes the above-mentioned image reading device and an image forming unit that prints an image read by the image reading device on paper.
  • the present invention in an image reading device using CIS, when the document cover is in the open state, it is possible to prevent erroneous detection / non-detection of the document by the auto crop function.
  • An example of the first image data generated by reading the original by the image reading unit is shown.
  • An example of the second image data is shown.
  • An example of the reading size confirmation screen is shown.
  • An example of the third image data is shown.
  • An example of the fourth image data is shown. It is a flowchart which shows the card document scanning process of 2nd Embodiment. It is a flowchart which shows the card document scanning process of 2nd Embodiment. It is a figure which shows an example of a warning screen.
  • FIG. 1 is a perspective view showing the appearance of an image forming apparatus including the image reading apparatus according to the first embodiment of the present invention.
  • FIG. 2 is a diagram showing an internal configuration of the image reading device according to the first embodiment.
  • FIG. 3 is a block diagram showing an internal configuration of the image forming apparatus according to the first embodiment.
  • the image forming apparatus 1 is a multifunction device having a plurality of functions such as a facsimile function, a copying function, a printer function, and a scanner function, and includes an image reading device 2.
  • a plurality of devices for realizing various functions of the image forming apparatus 1 are housed in the housing 7 of the image forming apparatus 1.
  • the housing 7 houses an image reading device 2, an image forming unit 12, a fixing unit 13, a paper feeding unit 14, and the like.
  • the image reading device 2 includes a document transporting unit 30 which is an ADF (Auto Document Feeder) for transporting documents, a platen glass 31 as a document mounting table including a document mounting surface 31A on which a document is placed, and a document cover 32. And an open / close detection unit 33.
  • the platen glass 31 is a plate-shaped member made of transparent glass.
  • the platen glass 31 has a rectangular shape including a short side extending in the main scanning direction X and a long side extending in the sub-scanning direction Y.
  • the sub-scanning direction Y is a direction orthogonal to the main scanning direction X.
  • the document cover 32 is connected to the housing 7 via a rotation axis, and is provided so as to be openable and closable with respect to the document mounting surface 31A of the platen glass 31 by rotating around the rotation axis.
  • the document cover 32 includes a white plate-shaped member.
  • the open / close detection unit 33 is a mechanical switch mechanism that detects the open state or the closed state of the document cover 32. When the open / close detection unit 33 is pressed by the document cover 32, the open / close detection unit 33 outputs a detection signal indicating a closed state. When the open / close detection unit 33 is not pressed by the document cover 32, the open / close detection unit 33 outputs a detection signal indicating an open state.
  • the image reading device 2 further includes an image reading unit 11.
  • the image reading unit 11 includes a contact image sensor (CIS: Contact Image Sensor) 38 as a reading sensor.
  • CIS Contact Image Sensor
  • the contact image sensor 38 includes a plurality of photoelectric conversion elements arranged so as to be arranged along the main scanning direction X.
  • the contact image sensor 38 irradiates light toward a document transported by the document transport unit 30 or a document placed on the document mounting surface 31A of the platen glass 31 to acquire the reflected light, and obtains the reflected light. Is converted into a digital signal to generate a signal indicating a pixel value as the converted digital value, which is output to the control unit 100 described later.
  • the image reading device 2 has a part of image data (for example, a card manuscript) showing a manuscript (for example, a card manuscript) from the image data read by the scanner function (first image data 80 shown in FIG. 11 to be described later) (second shown in FIG. 12 to be described later). It has an auto crop function that automatically cuts out only image data 83).
  • the card manuscript is an ID (Identification) card, a business card, or the like.
  • the ID card is not particularly limited as long as it is generally used, and is, for example, a driver's license, a health insurance card, a credit card, or a passport.
  • the image forming unit 12 includes a photoconductor drum, a charging device, an exposure device, a developing device, and a transfer device.
  • the image forming unit 12 sends image data generated by the image reading unit 11, image data sent from an information processing device 22 such as a PC (Personal Computer) or a server connected via a network, or another facsimile device.
  • An image composed of a toner image is formed on the recording paper supplied from the paper feed unit 14 based on the image data or the like.
  • the fixing unit 13 fixes the toner image on the recording paper by heating and pressurizing the recording paper on which the toner image is formed on the surface by the image forming unit 12.
  • the recording paper on which the toner image is fixed by the fixing unit 13 is discharged to the paper ejection tray 8.
  • the paper feed unit 14 pulls out the recording paper stored in the paper cassette or the recording paper placed on the manual feed tray one by one by the pickup roller (not shown) and sends it out to the image forming unit 12.
  • the image forming apparatus 1 includes an operation unit 15 operated by the user.
  • the operation unit 15 accepts input operations by the user such as instructions on various functions that can be executed by the image forming apparatus 1.
  • the operation unit 15 includes a hard key and a display unit 16.
  • the display unit 16 is a display device including a liquid crystal display.
  • the display unit 16 displays various screens related to various functions that can be executed by the image forming apparatus 1.
  • the operation unit 15 includes a touch panel 15A arranged so as to be superimposed on the screen of the display unit 16.
  • the display unit 16 is an example of a notification unit within the scope of claims.
  • the image forming apparatus 1 includes a control unit 100.
  • the control unit 100 includes a processor, a RAM (Random Access Memory), a ROM (Read Only Memory), and the like.
  • the processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), an ASIC (Application Specific Integrated Circuit), or the like.
  • the control unit 100 functions as a control unit 101 and an individual image cutting unit 102 when a control program stored in a built-in ROM or HDD (Hard Disk Drive) 19 is executed by the above processor.
  • the control unit 100 includes a document transport unit 30, an image reading unit 11, an open / close detection unit 33, an image forming unit 12, a fixing unit 13, a paper feeding unit 14, an operation unit 15, an image processing unit 17, an image memory 18, HDD 19, and a facsimile. It is electrically connected to the communication unit 20, the communication unit 21, and the like.
  • the document transport unit 30, the image reading unit 11, the open / close detection unit 33, the operation unit 15, the display unit 16, and the control unit 100 function as the image reading device 2.
  • the control unit 101 controls the entire image forming apparatus 1. More specifically, the control unit 101 controls the operation of each unit of the image forming apparatus 1 and the communication with the information processing apparatus 22 connected via the network.
  • the image processing unit 17 executes image processing on the image data generated by the image reading unit 11 as necessary.
  • the image memory 18 includes an area for temporarily storing image data to be printed generated by the image reading unit 11.
  • the HDD 19 is a large-capacity storage device that stores various data including image data generated by the image reading unit 11.
  • the HDD 19 stores various control programs for realizing the general operation of the image forming apparatus 1.
  • the HDD 19 stores in advance the type information of the reading sensor included in the image reading unit 11. Since the reading sensor is the contact image sensor 38 in the HDD 19, information indicating "CIS" as the type information of the reading sensor is stored in advance by the person in charge of the manufacturing company of the present apparatus, the person in charge of the manufacturer, or the like. ..
  • the HDD 19 is an example of a storage unit within the scope of claims.
  • the HDD 19 stores information indicating "CCD” as the type information of the reading sensor, but in the present embodiment, the image reading unit 11 is a contact image sensor. Therefore, as described above, the HDD 19 stores information indicating "CIS" as the type information of the reading sensor.
  • the individual image cutting unit 102 cuts out an independent individual image (that is, an image of a card document) for each document (for example, a card document) from the image data (first image data 80) obtained by reading by the image reading unit 11. Perform processing.
  • the individual image cutout unit 102 is configured to realize the auto crop function. For example, the individual image cutting unit 102 executes a known edge detection process on the first image data 80 (scanned image data) to detect the edge image. Then, the individual image cutting unit 102 performs a process of cutting out a rectangular image whose four sides are surrounded by the edge image as one block as the individual image from the first image data 80 in which the edge image is detected.
  • the control unit 101 detects the open state of the document cover 32 by the open / close detection unit 33 and stores it in the HDD 19 in advance.
  • the display unit 16 notifies that the document cover 32 is in the open state, and the image scanning unit 11 executes scanning of the document image. Suspend.
  • the HDD 19 stores a processing program for executing the card document scanning process according to the present embodiment.
  • the above-mentioned processor executes the card document scanning process as the control unit 101.
  • the processing program shall be included in the above control program.
  • control unit 101 and the individual image cropping unit 102 may be configured to be operable by a hard circuit regardless of the operation based on the control program, or may be configured to be realized by two or more control units. good.
  • the HDD 19 associates the type of the ID card with the size of the ID card and stores them in advance as size information.
  • the ID card has a substantially rectangular shape. Therefore, the HDD 19 stores the length of the short side and the length of the long side of the ID card as the size of the ID card.
  • the size information can be arbitrarily added or deleted by input by the user via the operation unit 15.
  • FIG. 4 is a diagram showing an example of size information.
  • the HDD 19 stores, as the size information 40, for example, information indicating the type of the ID card "passport” and information indicating the size of the ID card "88 mm x 125 mm" in association with each other. ing.
  • the HDD 19 also stores, as the size information 40, for example, information indicating the type of the ID card "driver's license” and information indicating the size of the ID card "54 mm x 85.6 mm” in association with each other. ..
  • the size of the ID card stored as the size information 40 is smaller than the A5 size "148 mm x 210 mm".
  • the HDD 19 also has general standard paper size information determined by the JIS standard (for example, "210 mm ⁇ 297 mm” as information indicating A4 size, information indicating A5 size).
  • Information of "148 mm x 210 mm”, information of "105 mm x 148 mm” as information indicating A6 size, etc.) are stored in advance.
  • the facsimile communication unit 20 connects to a public line and transmits / receives image data via the public line.
  • the communication unit 21 includes a communication module such as a LAN board.
  • the image forming apparatus 1 performs data communication with an information processing apparatus 22 such as a PC or a server on the network via the communication unit 21.
  • a power supply (not shown) is connected to each part of the image forming apparatus 1, and each part of the image forming apparatus 1 operates by supplying electric power from this power source.
  • FIG. 5 is a flowchart showing the card document scanning process of the first embodiment.
  • the driver's license placed on the platen glass 31 as a card manuscript
  • only the image data of the driver's license is obtained from the image data obtained by reading by the image reading unit 11 by the auto crop function. This section describes the case of automatically cutting out.
  • FIG. 6 is a diagram showing an example of a home screen.
  • the home screen 60 has, as soft keys, a key 62 for selecting a copy function, a key 64 for selecting a transmission function, a key 65 for selecting a facsimile function, and a card document scanning function. Includes key 66 and the like.
  • the control unit 101 detects that the key 66 is pressed via the touch panel 15A, the display unit 16 displays the guidance screen 67 shown in FIG. 7 for guiding the designation of the scan type. (S10).
  • FIG. 7 is a diagram showing an example of a guidance screen for guiding the designation of the scan type.
  • the guidance screen 67 includes the message 671 "Please specify the scan type.”
  • the guidance screen 67 includes, as soft keys, a key 672 for designating a normal document scan and a key 673 for designating a card document scan.
  • the user wants to scan the card document and presses the key 673.
  • the key 674 indicating "Next".
  • the control unit 101 detects that the key 674 is pressed after the key 673 is pressed via the touch panel 15A after the guidance screen 67 is displayed, the control unit 101 guides the display unit 16 to specify the auto crop function, as shown in FIG.
  • the guidance screen 68 is displayed.
  • FIG. 8 is a diagram showing an example of a guidance screen for guiding the designation of the auto crop function.
  • the guidance screen 68 includes the message 681 "Please specify on / off of the auto crop function.”
  • the guidance screen 68 includes, as soft keys, a key 682 for designating the on of the auto crop function and a key 683 for designating the off.
  • a key 682 for designating the on of the auto crop function
  • a key 683 for designating the off.
  • the key 684 indicating "Next".
  • the control unit 101 When the control unit 101 detects that the key 684 is pressed after pressing the key 682 via the touch panel 15A after displaying the guidance screen 68, the control unit 101 guides the display unit 16 to instruct the display unit 16 to start scanning the card document.
  • the guidance screen 70 shown in 9 is displayed.
  • the guidance screen 70 includes a message 72 and, as soft keys, a reading start key 74 for inputting an instruction to start scanning the card document by the image reading unit 11. After displaying the guidance screen 70, the control unit 101 waits until the reading start key 74 is pressed (NO in S11).
  • the user After confirming the guidance screen 70, the user opens the document cover 32, and as shown in FIG. 1, the corner portion of the driver's license 5 is formed on the corner portion of the platen glass 31 in the predetermined reading area 6. Place the driver's license 5 so that one of them overlaps. At this time, the user places the driver's license 5 on the reading area 6 so that the surface as one surface is the reading surface.
  • the reading area 6 is, for example, an A5 size area including one of the corners of the platen glass 31.
  • the control unit 101 detects that the reading start key 74 is pressed via the touch panel 15A, it determines that the instruction to start reading the card document has been accepted (YES in S11), and the auto crop function is on or off. It is determined whether or not there is (S12).
  • the control unit 101 detects the pressing of the key 682 of the guidance screen 68 shown in FIG. 8 via the touch panel 15A, it is determined that the auto crop function is on (YES in S12).
  • the control unit 101 determines whether or not the document cover 32 is in the open state based on the detection signal output from the open / close detection unit 33 (S13).
  • the control unit 101 determines that the document cover 32 is in the open state (YES in S13), and determines whether or not the reading sensor is CIS (S14). ).
  • the type information of the reading sensor stored in the HDD 19 is the information indicating “CIS”, the control unit 101 determines that it is CIS (YES in S14).
  • the control unit 101 causes the display unit 16 to display the warning screen 90 shown in FIG. 10 (S15).
  • the warning screen 90 includes the message 901 "The document cover is open! Please close the document cover.”, The message 902 "Please instruct to start scanning after closing the document cover.”, And the software.
  • the key includes a reading start key 903 for inputting an instruction to start reading the card document by the image reading unit 11.
  • the control unit 101 determines whether or not a predetermined time (for example, 1 minute) has elapsed (S16), and if not (NO in S16). , It is determined whether or not the document cover 32 is in the closed state (S17).
  • the control unit 101 reads the entire document mounting surface 31A of the platen glass 31 to the image reading unit 11 when the reading start key 903 is pressed.
  • the first image data 80 showing the image corresponding to the entire document mounting surface 31A is generated (S18). As shown in FIG. 11, the first image data 80 generated at this time is image data including an image of the front surface of the driver's license 5, which is one side of the card document.
  • FIG. 11 shows an example of the first image data generated by reading the original by the image reading unit 11.
  • the first image data 80 includes a manuscript portion 82 corresponding to the surface of the driver's license 5 and a portion other than the manuscript portion 82.
  • the contact image sensor 38 is affected by the ambient light, so that the edge 82A of the document portion 82 cannot be detected.
  • the contact image sensor 38 since the document is read by the image reading unit 11 when the document cover 32 is closed, the contact image sensor 38 is not affected by ambient light, and the image reading unit 11 is platen. Since the reflected light from the portion of the glass 31 on which the original is placed is acquired, the edge 82A of the original portion 82 in the first image data 80 can be detected. Therefore, when the document cover 32 is in the closed state, the individual image cutting unit 102 cuts out the second image data 83 showing the image corresponding to the document portion from the first image data 80 as described below. It is set to execute the auto crop function.
  • the individual image cropping unit 102 After the generation of the first image data 80, the individual image cropping unit 102 detects the edge 82A of the document portion 82 from the first image data 80 by using a known edge detection technique, and the document portion 82 surrounded by the edge 82A.
  • the second image data 83 showing the image corresponding to is cut out (S19).
  • FIG. 12 shows an example of the second image data.
  • the second image data 83 is image data showing an image corresponding to the manuscript portion 82 corresponding to the surface of the driver's license 5.
  • control unit 101 stores the cut out second image data 83 in a predetermined user storage area of the HDD 19 (S20).
  • the control unit 101 prohibits the auto crop function (S21). ). That is, the control unit 101 changes the auto crop function to off, and prohibits the individual image cropping unit 102 from cutting out the second image data 83 corresponding to the individual image (manuscript portion 82) from the first image data 80. ..
  • control unit 101 causes the display unit 16 to display a confirmation screen 91 to the effect that the image of the original is read with a predetermined reading size, as shown in FIG.
  • FIG. 13 is a diagram showing an example of a reading size confirmation screen.
  • the message 911 "The auto crop function is prohibited. Is the reading size A5 size?"
  • the card document by the image reading unit 11 as a soft key. It includes a scanning start key 912 for inputting an instruction to start scanning and a stop key 913 for instructing to stop reading the card document.
  • the control unit 101 determines whether or not there is an instruction for the reading size (S22).
  • the control unit 101 determines that there is an instruction for the reading size (YES in S22), and the document placing surface 31A of the platen glass 31 with respect to the image reading unit 11.
  • the reading area 6 here, the A5 size area
  • the third image data 85 showing the image corresponding to the A5 size reading area 6 on the document mounting surface 31A is generated (S23).
  • the third image data 85 generated at this time is A5 size image data including an image of the front surface of the driver's license 5, which is one side of the card document.
  • control unit 101 stores the third image data 85 in a predetermined user storage area of the HDD 19 (S20). Since the third image data 85 is an uncut image, the control unit 101 may store the third image data 85 in association with the first incidental information indicating that the image is not cut out. good.
  • the control unit 101 determines in S12 that the auto crop function is off (in S12). NO), the reading size is set to the default value, for example, A4 size (S24). Then, the control unit 101 causes the image reading unit 11 to read the reading area 6 (here, the A4 size area) shown in FIG. 1 on the document placing surface 31A of the platen glass 31, and causes the document placing surface 31A.
  • the fourth image data 87 showing the image corresponding to the A4 size reading area 6 in the above is generated (S25). As shown in FIG. 15, the fourth image data 87 generated at this time is A4 size image data including an image of the front surface of the driver's license 5, which is one side of the card document.
  • the control unit 101 stores the fourth image data 87 in a predetermined user storage area of the HDD 19 (S20). Since the fourth image data 87 is an uncut image, the control unit 101 may store the fourth image data 87 in association with the first incidental information, and may indicate that the cutout is not permitted. 2 Ancillary information may be associated and stored.
  • the control unit 101 ends this process after S20 or when the stop key 913 of the confirmation screen 91 shown in FIG. 13 is pressed (NO in S22).
  • the control unit 101 detects opening / closing when the operation unit 15 is instructed to cut out an individual image (manuscript portion 82 shown in FIG. 11) by the individual image cutting unit 102.
  • the display unit 16 indicates that the document cover 32 is in the open state.
  • the notification is given, and the execution of the image reading of the original by the image reading unit 11 is interrupted. Therefore, in the image reading device 2 using the CIS (contact image sensor), when the document cover 32 is in the open state, the individual image cutout portion 102 cuts out the individual image (the document portion 82 shown in FIG. 11). Therefore, it is possible to prevent the individual image cutting unit 102 from failing to cut out the individual image (original portion 82), and it is possible to prevent the occurrence of erroneous detection / undetection of the original by the auto crop function.
  • the control unit 101 detects the closed state of the document cover 32 by the open / close detection unit 33 within a predetermined period (designated period) after the notification by the display unit 16, the image reading unit 11 captures the image of the document. Scanning is executed, and the individual image (original portion 82) is cut out by the individual image cutting unit 102. Therefore, in the image reading device 2 in which the CIS is used, when the document cover 32 is closed within a predetermined period after notification, the image of the document is immediately read and individually. Since the individual image (original portion 82) is cut out by the image cutting portion 102, the image can be cut out quickly by the auto crop function.
  • the image reading device 2 in which CIS is used when the document cover 32 is in the closed state, the individual image is cut out by the individual image cutting unit 102, so that the auto crop function erroneously detects the document. Undetected can be reduced and the second image data 83 can be acquired.
  • the control unit 101 prohibits the individual image cutting unit 102 from cutting out the individual image. Therefore, in the image reading device 2 in which CIS is used, when the document cover 32 is in the open state, it is possible to prevent erroneous detection / non-detection of the document by the auto crop function.
  • control unit 101 prohibits the individual image cutting unit 102 from cutting out the individual image, and then causes the display unit 16 to display a display indicating that the original image is read at a predetermined scanning size, and operates the operation unit 101.
  • the image reading unit 11 instructs the image reading unit 11 to read the original in the predetermined reading size (for example, A5 size). Make the image read. Therefore, instead of cutting out the image by the auto crop function, it is possible to read the image of the original with a predetermined scanning size. As a result, the third image data 85 of the reading size confirmed by the user can be acquired.
  • the above-mentioned control program can also be installed in the HDD of an image reading device equipped with a CCD image sensor as a reading sensor.
  • the image reading device in which the above-mentioned control program is installed in the HDD and equipped with a CCD image sensor as a reading sensor stores information indicating "CCD" as the type information of the reading sensor in the HDD.
  • the image reading device has the same configuration as the image reading device 2 except that the reading sensor of the image reading unit is a CCD image sensor instead of a CIS.
  • the control unit will determine that it is a CCD (NO in S14). Even if the document cover is in the open state, the CCD image sensor is less affected by ambient light when the document cover is in the open state. Therefore, the control unit causes the individual image to be cut out by the auto crop function.
  • the control unit causes the image reading unit to read the entire platen glass document mounting surface and generate first image data 80 showing an image corresponding to the entire document mounting surface. Then, the individual image cutting unit cuts out the second image data indicating the individual image (manuscript portion) from the first image data. Then, the control unit stores the second image data in the user storage area of the HDD. That is, the above-mentioned control program can be applied to both an image reading device equipped with a CIS as a reading sensor and an image reading device equipped with a CCD image sensor as a reading sensor.
  • 16 and 17 are flowcharts showing the card document scanning process of the second embodiment, respectively.
  • the individual image is cut out by the individual image cutting unit 102. It is said that it is not.
  • the image of the document is read by the image reading unit 11, and the first image data obtained by reading by the image reading unit 11 is executed.
  • the edge 82A of the document portion 82 in 80 can be detected, the individual image (manuscript portion 82) is cut out, which is different from the first embodiment.
  • the control unit 101 causes the display unit 16 to display the warning screen 92 shown in FIG. 18 for a specified time (for example, 10 seconds). , It is determined whether or not there is a read execution instruction (S31 shown in FIG. 17).
  • the warning screen 92 includes a message 921 "If the document cover is open, scanning may fail! And a message 922 "Do you want to instruct to start scanning without closing the document cover?"
  • the soft key includes a reading start key 923 for inputting an instruction to start reading the card document by the image reading unit 11.
  • the control unit 101 determines that there is a reading execution instruction (YES in S31), and places the original on the platen glass 31 on the image reading unit 11.
  • the entire surface 31A is read to generate first image data 80 showing an image corresponding to the entire surface on which the document is placed (S32).
  • the first image data 80 generated at this time is image data including an image of the front surface of the driver's license 5, which is one side of the card document.
  • the control unit 101 determines that there is no reading execution instruction (NO in S31), and the designated time (for example, 1 minute) which is a predetermined period is set. It is determined whether or not it has elapsed (S16), and if it has not elapsed (NO in S16), it is determined whether or not the document cover 32 is in the closed state (S17).
  • control unit 101 can extract the outline of the original when the individual image cropping unit 102 detects an edge from the first image data 80 and extracts a substantially rectangular area surrounded by the detected edge. (YES in S33).
  • the control unit 101 determines that the outline of the original can be extracted from the first image data ( YES in S33), the size of the scanned document is determined based on the above-mentioned substantially rectangular area.
  • control unit 101 first extracts a substantially rectangular area surrounded by the detected edges, and obtains information indicating the length of the extracted area in the main scanning direction X and the length of the sub-scanning direction Y. Get the information to show.
  • control unit 101 has a short side length and a long side closest to the length of the main scanning direction X and the length of the sub-scanning direction Y acquired from the size information 40 shown in FIG. 4 stored in the HDD 19.
  • the size having the length of is extracted, and the extracted size is determined as the size of the original.
  • the control unit 101 first extracts the document portion 82 surrounded by the edge 82A, and indicates a value of "54 mm” indicating the length of the document portion 82 in the main scanning direction X and the length of the sub-scanning direction Y. The value of "85.6 mm" is acquired. The control unit 101 then extracts from the size information 40 the size of the driver's license having the same short-side length and long-side length as the acquired length of the main scanning direction X and the length of the sub-scanning direction Y. Then, the size of the extracted driver's license is determined as the size of the manuscript.
  • the individual image cutting unit 102 cuts out the second image data 83 corresponding to the document portion 82 surrounded by the edge 82A from the first image data 80.
  • the control unit 101 stores the cut out second image data 83 in the user storage area of the HDD 19.
  • the control unit 101 notifies the display unit 16 that the document cover 32 is in the open state, and then the open / close detection unit 33 detects the closed state of the document cover 32.
  • the image reading unit 11 will instruct the image reading unit 11 to cut out the original image.
  • the image reading device 2 in which CIS is used even when the document cover 32 is in the open state, if the outline of the document can be extracted from the first image data 80, the image by the auto crop function can be used. Cutting can be performed normally.
  • the control unit 101 when the outline of the original cannot be extracted from the image data (first image data 80) obtained by (ii) reading by the image reading unit 11, the control unit 101 has an individual image by the individual image cutting unit 102. The cutout of (manuscript portion 82) is not executed. Therefore, in the image reading device 2 in which CIS is used, if the outline of the document cannot be extracted from the image data (first image data 80) when the document cover 32 is in the open state, the individual image cutout portion. Since the individual image (original portion 82) is not cut out by 102, it is possible to prevent erroneous detection / non-detection of the original by the auto crop function.
  • the control unit 101 prohibits the individual image cutting unit 102 from cutting out the individual image (original portion 82) (S21), and then causes the display unit 16 to display a display prompting the user to specify the reading size.
  • the image scanning unit 11 may execute the scanning of the image of the original document at the specified scanning size. In this case, the image of the original can be read at the scanning size specified by the user, instead of cutting out the image by the auto crop function. This makes it possible to acquire image data of a reading size specified by the user.
  • a mechanical switch mechanism is exemplified as an example of the open / close detection unit 33, but the present invention is not limited to such an embodiment.
  • the open / close detection unit 33 is not particularly limited as long as it is configured to detect the open state or the closed state of the document cover 32, and may be, for example, an electric switch having a configuration in which the document cover 32 is electrically connected immediately before the document cover 32 is closed. good.
  • a color multifunction device is described as an embodiment of the image reading device according to the present invention, but this is only an example, and a monochrome multifunction device, a copier, a facsimile machine, or the like can be used. It may be another electronic device.
  • FIGS. 1 to 18 are merely one embodiment of the present invention, and the present invention is not intended to be limited to the configuration and processing.

Abstract

L'invention concerne un dispositif de lecture d'images (2) qui est pourvu d'une section de commande (101) qui, lorsqu'une instruction pour une section de découpe d'image individuelle (102) en vue d'isoler une image individuelle est exécutée sur une section d'actionnement (15), si un état ouvert de couvercle de manuscrit est détecté par une section de détection d'ouverture/fermeture (33) et s'il est déterminé que des informations de type stockées à l'avance dans un disque dur (19) comprennent des informations indiquant un capteur d'image de contact, amène une section d'affichage (16) à émettre une alerte indiquant que le couvercle de manuscrit (32) se trouve dans l'état ouvert, et termine l'exécution de la lecture d'une image de manuscrit par une section de lecture d'image (11).
PCT/JP2021/027736 2020-08-03 2021-07-27 Dispositif de lecture d'images et dispositif de formation d'images WO2022030302A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285199A (ja) * 1999-03-31 2000-10-13 Fujitsu Kiden Ltd 媒体の読み取り方法及び媒体の読み取り装置
JP2019024168A (ja) * 2017-07-24 2019-02-14 株式会社沖データ 画像読取装置
JP2019121824A (ja) * 2017-12-28 2019-07-22 京セラドキュメントソリューションズ株式会社 画像読取装置及びそれを備えた画像形成装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285199A (ja) * 1999-03-31 2000-10-13 Fujitsu Kiden Ltd 媒体の読み取り方法及び媒体の読み取り装置
JP2019024168A (ja) * 2017-07-24 2019-02-14 株式会社沖データ 画像読取装置
JP2019121824A (ja) * 2017-12-28 2019-07-22 京セラドキュメントソリューションズ株式会社 画像読取装置及びそれを備えた画像形成装置

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