JP2020061686A - Image processing apparatus, abnormal member detection method, and abnormal member detection program - Google Patents

Abstract

To identify an abnormal member at low cost when any of multiple members becomes abnormal.SOLUTION: An image processing device includes: a member control unit 51 that controls a plurality of members; a conversion circuit that classifies the plurality of members into a plurality of groups, and converts an abnormality signal indicating an abnormality of each of the plurality of members belonging to each of the groups into an integrated signal, for each of the plurality of groups; and an abnormal member determination unit 53 that determines that a member being driven at the time when the integrated signal is detected among the plurality of members belonging to the group corresponding to the integrated signal is abnormal when an integrated signal corresponding to any of the plurality of groups is detected.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an image processing apparatus, an abnormal member detection method, and an abnormal member detection program, and particularly to an image processing apparatus that detects an abnormality of any one of a plurality of members, an abnormal member detection method executed by the image processing apparatus, and The present invention relates to an abnormal member detection program that causes a computer to execute the abnormal member detection method.

  When an image processing apparatus typified by an MFP (Multi Function Peripheral) fails, a service person who is a repair person specifies the failure location. Since the image processing apparatus is equipped with a plurality of members, it may be difficult to identify the failed member from the state of the image processing apparatus, and it may take a lot of time to identify the cause. In order to identify the cause of the failure by the service person, the unit that causes the failure is specified for each unit made up of multiple members, and at the next stage, which of the multiple members included in that unit fails Identify the cause. In order to eliminate the failure of the image processing apparatus as early as possible, the service person may replace the unit specified as the cause of the failure without specifying the member causing the failure. In this case, the failure can be resolved at an early stage, but the cost is increased because the non-failed member is replaced.

  On the other hand, when the service person forcibly operates the image processing apparatus to identify the cause of the failure, it is necessary to shorten the time for operating the image processing apparatus. Therefore, the service person needs to identify the failure in the shortest possible time.

  By monitoring the states of all the members included in the image processing apparatus, it is possible to identify a member that has failed while the image processing apparatus is operating. For example, Japanese Unexamined Patent Application Publication No. 2005-033559 discloses a drive mechanism including a plurality of constituent members such as a drive member that operates by receiving a current supply and a power transmission member that transmits the driving force of the drive member to another member. A failure diagnosis device for diagnosing a failure occurring in a device having the operation mechanism, the operation condition signal detector detecting an operation condition signal indicating an operation condition while the drive mechanism is operating for a predetermined period, and the operation condition signal detector. A failure diagnosis unit that performs a failure diagnosis for each of the constituent members of the drive mechanism based on the degree of deviation of the operation status signal detected by the sensor from a normal range that is predetermined for the operation status signal. The provided fault diagnosis device is described. However, a device for detecting the operating state of each of the plurality of drive mechanisms and a circuit for monitoring the operating state of each of the plurality of drive mechanisms are required, which increases the cost.

JP, 2005-033559, A

  One of the objects of the present invention is to provide an image processing apparatus capable of identifying an abnormal member at a time when any of a plurality of members becomes abnormal at low cost.

  Another object of the present invention is to provide an image processing apparatus capable of quickly determining an abnormal member from a plurality of members.

  Still another object of the present invention is to provide an abnormal member detection method capable of identifying an abnormal member when any of the plurality of members becomes abnormal at low cost.

  Still another object of the present invention is to provide an abnormal member detection method capable of quickly determining a member that has become abnormal from a plurality of members.

  Still another object of the present invention is to provide an abnormal member detection program capable of identifying an abnormal member at a time when any of a plurality of members becomes abnormal at low cost.

  Still another object of the present invention is to provide an abnormal member detection program capable of quickly determining a member that has become abnormal from a plurality of members.

  According to an aspect of the present invention, an image processing apparatus includes a member control unit that controls a plurality of members, and each of the plurality of members is classified into any one of a plurality of groups, and each of the plurality of groups has a group. And a conversion means for converting an abnormality signal indicating an abnormality of each of the plurality of members into an integrated signal indicating that at least one of the plurality of members is abnormal, and an integrated signal corresponding to any of the plurality of groups is detected. An abnormal member determination means for determining, as an abnormality, a member that was driven at the time when the integrated signal was detected, out of a plurality of members belonging to the group corresponding to the integrated signal.

  According to this aspect, the member that has been driven at the time when the integrated signal is detected is determined to be abnormal among the plurality of members, and thus a circuit for detecting whether or not there is an abnormality for each of the plurality of members is unnecessary. Therefore, the circuit configuration can be simplified and the cost can be reduced. Further, it is possible to specify the member that has become abnormal when any of the plurality of members becomes abnormal, without detecting whether or not each of the plurality of members is abnormal at different times. As a result, it is possible to provide an image processing apparatus capable of identifying the abnormal member at the time when any of the plural members becomes abnormal at low cost.

  Preferably, in each of the plurality of groups, the driving period in which each of the plurality of members belonging to the group is driven is different from the driving period in each of all the other members.

  According to this aspect, the driving period in which each of the plurality of members belonging to the group is driven is different from the driving period in each of all the other members, so that a member whose driving period matches the period in which the integrated signal is detected is determined to be abnormal. can do.

  Preferably, each of the plurality of groups includes a plurality of members having different driving start points.

  According to this aspect, since the plurality of members belonging to the group have different driving start times, it is possible to determine that the member whose driving start time and the integrated signal are detected are abnormal.

  According to this aspect, each of the plurality of groups further includes a plurality of members having the same driving start time and different driving end times.

  According to this aspect, it is possible to determine that a member in which the period in which the integrated signal is detected and the driving period match is abnormal.

  Preferably, each of the plurality of groups includes a plurality of members having different driving end points.

  According to this aspect, since the plurality of members belonging to the group have different driving end times, it is possible to determine that a member whose driving end time coincides with the time when the integrated signal is not detected is abnormal.

  Preferably, it further comprises an operation condition acquisition unit for acquiring the operation condition, and a group determination unit for determining a plurality of members respectively belonging to the plurality of groups based on the operation condition, and the conversion unit is provided for each of the plurality of groups. The abnormal signal of each of the plurality of members determined by the group determination means for the group is converted into an integrated signal.

  According to this aspect, the plurality of members respectively belonging to the plurality of groups are determined based on the operation condition, and the abnormal signals of the plurality of members determined for the group are converted into integrated signals. Therefore, even if the operating conditions are different, the driving periods of the plurality of members belonging to the group can be made different.

  According to another aspect of the present invention, the image processing apparatus includes a member control unit that controls a plurality of members by using a control signal including a start signal instructing to start driving and an end signal instructing to end driving. When an integrated signal indicating that at least one of the plurality of members is abnormal is detected during the image processing operation, among the plurality of members based on the control signal for controlling each of the plurality of members and the integrated signal. An abnormal member determining means for determining an abnormal member.

  According to this aspect, since the abnormal member is determined based on the control signal and the integrated signal during the image processing operation, it is possible to quickly determine the abnormal member from the plurality of members. An image processing device can be provided.

  Preferably, the member control means drives the plurality of members at the time when the integrated signal is detected during the image processing operation, and drives the plurality of members at the time when the integrated signal is detected during the image processing operation. Each of the plurality of members that have been driven is independently driven after the integrated signal is detected.

  According to this aspect, when a plurality of members are being driven when the integrated signal is detected, they are driven independently, so that one of the plurality of members that has become abnormal can be specified. You can

  Preferably, the member control means does not independently drive one or more of the plurality of members that were not driven at the time when the integrated signal was detected during the image processing operation.

  According to this aspect, since one or more members that have not been driven at the time when the integrated signal is detected during the image processing operation are not driven alone, it is possible to quickly identify the abnormal member.

  Preferably, the member control means, after determining the abnormal member, does not drive one or more members that are not driven independently of the plurality of members that were driven at the time when the integrated signal was detected.

  According to this aspect, after determining the member that has become abnormal, one or more members that have not been driven independently are not driven, so that the process can be completed quickly.

  Preferably, the plurality of members include one drive prohibiting member which is previously prohibited to be driven independently while image processing is not being performed, and the member control unit does not drive the drive prohibiting member alone.

  According to this aspect, since the drive prohibiting member is not driven alone, it is possible to prevent the occurrence of a secondary problem that is predicted by driving it alone.

  Preferably, the member control means may independently drive one or more members other than the drive-inhibiting member among the plurality of members that were being driven at the time when the integrated signal was detected among the plurality of members. If not detected, it is determined that the drive prohibition member is abnormal.

  According to this aspect, it is possible to determine that the drive inhibiting member is abnormal without driving the drive inhibiting member.

  Preferably, the member control means independently drives the members in descending order of priority determined for the plurality of members.

  According to this aspect, it is possible to drive the members in order from the member having the highest probability of abnormality. As a result, the abnormal member can be identified as soon as possible.

  According to still another aspect of the present invention, the abnormal member detection method is an abnormal member detection method executed by an image processing device, and the image processing device is configured such that each of the plurality of members is one of a plurality of groups. A plurality of members, each of which has a conversion means for converting an abnormality signal indicating an abnormality of each of a plurality of members belonging to the group into an integrated signal indicating that at least one of the plurality of members is abnormal. And the member that was driven at the time when the integrated signal was detected among the plurality of members belonging to the group corresponding to the integrated signal when the integrated signal corresponding to one of the plurality of groups was detected. And causing the image processing apparatus to execute the step of determining that there is an abnormality.

  According to this aspect, it is possible to provide the abnormal member detection method that can specify the abnormal member at a time when any of the plurality of members becomes abnormal at low cost.

  According to still another aspect of the present invention, an abnormal member detection method is an abnormal member detection method executed by an image processing apparatus, and includes a start signal instructing to start driving and an end signal instructing to end driving. A member control step of controlling a plurality of members using a control signal including a plurality of members, and controlling each of the plurality of members when an integrated signal indicating that at least one of the plurality of members is abnormal is detected during the image processing operation. The image processing apparatus is caused to execute an abnormal member determining step of determining an abnormal member from a plurality of members on the basis of the control signal and the integrated signal.

  According to this aspect, it is possible to provide the abnormal member detection method capable of quickly determining the member that has become abnormal from the plurality of members.

  According to still another aspect of the present invention, the abnormal member detection program is an abnormal member detection program executed by a computer that controls the image processing apparatus, and the image processing apparatus is configured such that each of the plurality of members includes a plurality of groups. And a conversion unit for converting, for each of the plurality of groups, an abnormality signal indicating an abnormality of each of the plurality of members belonging to the group into an integrated signal indicating that at least one of the plurality of members is abnormal. , A step of controlling a plurality of members, and when an integrated signal corresponding to one of the plurality of groups is detected, the plurality of members belonging to the group corresponding to the integrated signal are driven at the time when the integrated signal is detected. And causing the computer to execute the step of determining that the member is abnormal.

  According to this aspect, it is possible to provide an abnormal member detection program that can specify a member that has become abnormal when any of the plurality of members becomes abnormal at low cost.

  According to still another aspect of the present invention, the abnormal member detection program is an abnormal member detection program executed by a computer that controls the image processing apparatus, and includes a start signal for instructing start of driving and an end signal for driving. A member control step of controlling a plurality of members using a control signal including a termination signal for controlling the plurality of members, and a plurality of members when an integrated signal indicating that at least one of the plurality of members is abnormal is detected during the image processing operation. The computer is caused to execute an abnormal member determination step of determining an abnormal member from a plurality of members based on a control signal for controlling each and an integrated signal.

  According to this aspect, it is possible to provide an abnormal member detection program capable of promptly determining the abnormal member from the plurality of members.

FIG. 3 is a perspective view showing an external appearance of the MFP according to the first embodiment of the present invention. 3 is a block diagram illustrating an outline of a hardware configuration of the MFP according to the first embodiment. FIG. 3 is a schematic cross-sectional view showing the internal configuration of the MFP according to the first embodiment. FIG. It is a figure which shows an example of the conversion circuit in 1st Embodiment. It is a figure which shows an example of a drive circuit. 3 is a block diagram illustrating an example of functions of a CPU included in the MFP according to the first embodiment. FIG. It is a figure which shows an example of the operating state and integrated signal of member A-member G. It is a 1st figure which shows an example of an operating state and an integrated signal when the drive period of two member A and the member B has overlapped. It is a 2nd figure which shows an example of an operating state and an integrated signal when the drive period of two member A and the member B has overlapped. It is a 3rd figure which shows an example of an operating state and an integrated signal when the drive period of two member A and the member B has overlapped. 6 is a flowchart showing an example of the flow of abnormality detection processing in the first embodiment. It is a figure which shows an example of the conversion circuit in 2nd Embodiment. 9 is a block diagram illustrating an example of functions of a CPU included in the MFP according to the second embodiment. FIG. It is a figure showing an example of group organization according to operation conditions. 11 is a flowchart showing an example of the flow of abnormality detection processing according to the second embodiment. It is a figure which shows an example of the conversion circuit in a 1st modification. It is a figure which shows an example of the conversion circuit in a 2nd modification. FIG. 16 is a block diagram showing an example of functions of a CPU included in the MFP according to the third embodiment. It is a figure which shows an example of a unit drive time table. It is a figure which shows an example of an operation history table. 13 is a flowchart showing an example of the flow of abnormality detection processing according to the third embodiment. It is a flow chart which shows an example of a flow of priority deciding processing. It is a flowchart which shows an example of the flow of the priority order determination process in a 3rd modification. It is a figure which shows an example of a remaining time table. It is a flowchart which shows an example of the flow of the priority order determination process in a 4th modification. It is a figure which shows an example of a drive frequency table. It is a flowchart which shows an example of the flow of the priority order determination process in a 5th modification. It is a figure which shows an example of a safety contribution table.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a perspective view showing the outer appearance of an MFP according to the first embodiment of the present invention. FIG. 2 is a block diagram showing an outline of the hardware configuration of the MFP according to the first embodiment. Referring to FIGS. 1 and 2, an MFP (Multi Function Peripheral) 100 is an example of an image processing apparatus, and conveys a main circuit 110, a document reading unit 130 that reads a document, and a document to the document reading unit 130. It includes an automatic document feeder 120, an image forming unit 140 that forms an image on a sheet based on image data, a sheet feeding unit 150 that supplies the sheet to the image forming unit 140, and an operation panel 160 as a user interface.

  The automatic document feeder 120 automatically conveys the plurality of documents set on the document tray 125 one by one to the document reading position of the document reading unit 130, and the image formed on the document by the document reading unit 130 is displayed. The read document is discharged onto the document discharge tray 127.

  The document reading unit 130 has a rectangular reading surface for reading a document. The reading surface is formed of, for example, platen glass. The automatic document feeder 120 is rotatably connected to the main body of the MFP 100 about an axis parallel to one side of the reading surface and can be opened and closed. A document reading unit 130 is disposed below the automatic document feeder 120, and the reading surface of the document reading unit 130 is exposed in an open state in which the automatic document feeder 120 is rotated and opened. Therefore, the user can place the original on the reading surface of the original reading unit 130. The automatic document feeder 120 can change its state between an open state where the reading surface of the document reading unit 130 is exposed and a closed state where the reading surface is covered.

  The image forming unit 140 forms an image on a sheet conveyed by the sheet feeding unit 150 by a well-known electrophotographic method. In the present embodiment, the image forming unit 140 forms an image on the sheet conveyed by the sheet feeding unit 150 under the image data and the image forming condition corresponding to the medium type of the sheet. The sheet on which the image is formed is discharged to the sheet discharge tray 159.

  The main circuit 110 includes a CPU (central processing unit) 111 that controls the entire MFP 100, a communication interface (I / F) unit 112, a ROM (Read Only Memory) 113, and a RAM (Random Access Memory) 114. A hard disk drive (HDD) 115 as a mass storage device, a facsimile unit 116, and an external storage device 118 are included. CPU 111 is connected to automatic document feeder 120, document reading unit 130, image forming unit 140, paper feed unit 150, and operation panel 160, and controls the entire MFP 100.

  The ROM 113 stores a program executed by the CPU 111, or data necessary for executing the program. The RAM 114 is used as a work area when the CPU 111 executes the program. Further, the RAM 114 temporarily stores the image data continuously sent from the document reading unit 130.

  Operation panel 160 is provided on the top of MFP 100. The operation panel 160 includes a display unit 161 and an operation unit 163. The display unit 161 is, for example, a liquid crystal display device (LCD), and displays an instruction menu for the user, information regarding acquired image data, and the like. Instead of the LCD, an organic EL (electroluminescence) display can be used as long as it is an apparatus for displaying an image.

  The operation unit 163 includes a touch panel 165 and a hard key unit 167. The touch panel 165 is of a capacitance type. Note that the touch panel 165 is not limited to the electrostatic capacitance method, and other methods such as a resistance film method, a surface acoustic wave method, an infrared method, and an electromagnetic induction method can be used.

  The detection surface of the touch panel 165 is provided on the upper surface or the lower surface of the display unit 161 so as to overlap the display unit 161. Here, the size of the detection surface of the touch panel 165 and the size of the display surface of the display unit 161 are the same. Therefore, the coordinate system of the display surface and the coordinate system of the detection surface are the same. The touch panel 165 detects the position where the user points the display surface of the display unit 161 on the detection surface, and outputs the coordinates of the detected position to the CPU 111. Since the coordinate system of the display surface and the coordinate system of the detection surface are the same, the coordinates output by the touch panel 165 can be replaced with the coordinates of the display surface.

  The hard key unit 167 includes a plurality of hard keys. The hard key is, for example, a contact switch. The touch panel 165 detects a position designated by the user on the display surface of the display unit 161. When the user operates the MFP 100, the user often takes an upright posture, and therefore the display surface of the display unit 161, the operation surface of the touch panel 165, and the hard key unit 167 are arranged facing upward. The user can easily visually recognize the display surface of the display unit 161, and the user can easily point the operation unit 163 with a finger.

  Communication I / F unit 112 is an interface for connecting MFP 100 to a network. The communication I / F unit 112 uses a communication protocol such as TCP (Transmission Control Protocol) or FTP (File Transfer Protocol) to communicate with other computers or data processing devices connected to the network. The network to which the communication I / F unit 112 is connected is a local area network (LAN), and the connection form may be wired or wireless. The network is not limited to a LAN, but may be a wide area network (WAN), public switched telephone network (PSTN), the Internet, or the like.

  Facsimile unit 116 is connected to the public switched telephone network (PSTN) and transmits facsimile data to PSTN or receives facsimile data from PSTN. The facsimile unit 116 stores the received facsimile data in the HDD 115, converts the received facsimile data into print data that can be printed by the image forming unit 140, and outputs the print data to the image forming unit 140. As a result, the image forming unit 140 forms an image of the facsimile data received by the facsimile unit 116 on a sheet. Facsimile unit 116 also converts the data stored in HDD 115 into facsimile data and transmits the facsimile data to a facsimile device connected to PSTN.

  The external storage device 118 is controlled by the CPU 111 and has a CD-ROM (Compact Disk Read Only Memory) 118A or a semiconductor memory mounted therein. In the present embodiment, an example in which the CPU 111 executes the program stored in the ROM 113 will be described. However, the CPU 111 controls the external storage device 118 to read the program to be executed by the CPU 111 from the CD-ROM 118A. Alternatively, the read program may be stored in the RAM 114 and executed.

  The CPU 111 controls the image forming unit 140 to form an image of image data on a recording medium such as paper. The image data output from the CPU 111 to the image forming unit 140 includes image data input from the document reading unit 130 and image data such as print data received from the outside.

  The recording medium for storing the program to be executed by the CPU 111 is not limited to the CD-ROM 118A, and may be a flexible disk, a cassette tape, an optical disk (MO (Magnetic Optical Disc) / MD (Mini Disc) / DVD (Digital Versatile Disc). )), IC card, optical card, mask ROM, semiconductor memory such as EPROM (Erasable Programmable ROM), and the like. Further, the CPU 111 downloads the program from the computer connected to the network and stores the program in the HDD 115, or the computer connected to the network writes the program to the HDD 115 so that the program stored in the HDD 115 is loaded into the RAM 114. Then, it may be executed by the CPU 111. The program mentioned here includes not only a program directly executable by the CPU 111 but also a source program, a compressed program, an encrypted program, and the like.

  FIG. 3 is a schematic cross-sectional view showing the internal configuration of the MFP according to the first embodiment. Referring to FIG. 3, automatic document feeder 120 separates one or more documents placed on document tray 125 and conveys them one by one to document reading unit 130. The document reading unit 130 exposes the image of the document set on the document glass 11 by the automatic document feeder 120 with the exposure lamp 13 attached to the slider 12 that moves under the document. The reflected light from the document is guided to the lens 16 by the mirror 14 and the two reflecting mirrors 15 and 15A, and forms an image on a CCD (Charge Coupled Devices) sensor 18. The exposure lamp 13 and the mirror 14 are attached to the slider 12, and the slider 12 is moved by the scan motor 17 in the arrow direction (sub-scanning direction) shown in FIG. 3 at a speed V according to the copy magnification. As a result, the original set on the original glass 11 can be scanned over the entire surface. Further, as the exposure lamp 13 and the mirror 14 move, the two reflecting mirrors 15 and 15A move in the direction of the arrow in FIG. 2 at a speed V / 2. As a result, the light path length of the light emitted from the exposure lamp 13 to the original document from the reflection of the original document to the image formation on the CCD sensor 18 is always constant.

  The reflected light imaged on the CCD sensor 18 is converted into image data as an electric signal in the CCD sensor 18 and sent to the main circuit 110. The main circuit 110 performs A / D conversion processing, digital image processing, and the like on the received analog image data, and then outputs it to the image forming unit 140. The main circuit 110 converts the image data into printing data for cyan (C), magenta (M), yellow (Y), and black (K), and outputs the printing data to the image forming unit 140.

  The image forming unit 140 includes yellow, magenta, cyan, and black image forming units 20Y, 20M, 20C, and 20K. Here, “Y”, “M”, “C” and “K” represent yellow, magenta, cyan and black, respectively. An image is formed by driving at least one of the image forming units 20Y, 20M, 20C, and 20K. When all the image forming units 20Y, 20M, 20C and 20K are driven, a full color image is formed. To the image forming units 20Y, 20M, 20C and 20K, yellow, magenta, cyan and black printing data are input, respectively. The image forming units 20Y, 20M, 20C, and 20K differ only in the color of the toner they handle, so here, the image forming unit 20Y for forming a yellow image will be described.

  The image forming unit 20Y includes an exposure head 21Y to which yellow printing data is input, a photoconductor drum 23Y which is an image carrier of the exposure head 21Y, a charger 22Y, a developing device 24Y, and a transfer charger 25Y. The toner bottle 41Y and the toner hopper 43Y are provided. The toner bottle 41Y stores yellow toner. The toner bottle 41Y rotates using a toner bottle motor as a drive source. The toner bottle 41Y has a spiral projection formed on its inner wall. When the toner bottle 41Y rotates, the toner moves along the protrusion and is discharged to the outside of the toner bottle 41Y. The toner discharged from the toner bottle 41Y is supplied to the toner hopper 43Y. The toner hopper 43Y includes a storage chamber for storing toner, a screw provided in the lower portion of the storage chamber, and a toner replenishment motor for rotating the screw. A connecting member communicating with the developing device 24Y is attached near the end of the screw in the storage chamber. When the toner supply motor rotates the screw, the toner stored in the storage chamber moves along the screw, and the toner is supplied to the developing device 24Y through the connecting member.

  The exposure head 21Y emits light according to the printing data (electrical signal) received from the main circuit 110 to expose the photoconductor drum 23Y, which is the subject. The exposure head 21Y emits laser light according to the received printing data (electrical signal). The emitted laser light is one-dimensionally scanned by the polygon mirror provided in the exposure head 21Y to expose the photosensitive drum 23Y. The polygon mirror rotates using a PC motor as a drive source. The angle of the rotation axis of the polygon mirror is adjusted by the skew correction motor. The direction in which the exposure head 21Y one-dimensionally scans the photosensitive drum 23Y is the main scanning direction. The skew correction motor is driven to adjust the angle of the rotation axis of the polygon mirror so that the direction in which the exposure head 21Y one-dimensionally scans the photosensitive drum 23Y coincides with the main scanning direction. The photoconductor drum 23Y has a cylindrical shape and rotates about a rotation axis parallel to the sub-scanning direction. The photoconductor drum 23Y is charged by the charger 22Y and then irradiated with the laser light emitted by the exposure head 21Y. As a result, an electrostatic latent image is formed on the photoconductor drum 23Y.

  Then, the developing device 24Y forms a toner image on the photoconductor drum 23Y. Specifically, the developing device 24Y is driven by a developing motor and puts the toner supplied from the toner hopper 43Y on the electrostatic latent image formed on the photosensitive drum 23Y. The toner image formed on the photoconductor drum 23Y is transferred onto the intermediate transfer belt 30 by the transfer charger 25Y. The transfer charger 25Y is switched between a state in which it is pressed by the intermediate transfer belt 30 and a state in which it is not pressed by the intermediate transfer belt 30 by the primary transfer pressure bonding clutch. The transfer charger 25Y is in a state of being pressed by the intermediate transfer belt 30 when the primary transfer pressure bonding clutch is on, and is in a state of not being pressed by the intermediate transfer belt 30 when the primary transfer pressure bonding clutch is off.

  On the other hand, the intermediate transfer belt 30 is suspended by the drive roller 33C and the roller 33A so as not to loosen. The drive roller 33C rotates by using the transport motor as a power source. When the drive roller 33C rotates counterclockwise in FIG. 3, the intermediate transfer belt 30 rotates counterclockwise in the figure at a predetermined speed. With the rotation of the intermediate transfer belt 30, the roller 33A rotates counterclockwise.

  As a result, the image forming units 20Y, 20M, 20C, and 20K sequentially transfer the toner images onto the intermediate transfer belt 30. The timing at which each of the image forming units 20Y, 20M, 20C, and 20K transfers the toner image onto the intermediate transfer belt 30 is adjusted by detecting the reference mark attached to the intermediate transfer belt 30. As a result, the yellow, magenta, cyan, and black toner images are superimposed on the intermediate transfer belt 30.

  Papers of different sizes are set in the paper feed cassettes 35, 35A, 35B. The paper stored in the paper feed cassette 35 is pushed upward by the lift mechanism using the first-stage cassette motor as a drive source, and is supplied to the transport path by the take-out roller 36. The paper stored in the paper feed cassette 35A is pushed upward by the lift mechanism using the second stage cassette motor as a drive source, and is supplied to the conveyance path by the take-out roller 36A. The paper stored in the paper feed cassette 35B is pushed upward by the lift mechanism using the third stage cassette motor as a drive source, and is supplied to the transport path by the take-out roller 36B.

  The paper stored in each of the paper feed cassettes 35, 35A, 35B is supplied to the conveyance path by the take-out rollers 36, 36A, 36B attached to the paper feed cassettes 35, 35A, 35B, and by the paper feed roller 37. It is sent to the registration roller 31. The paper feed roller 37 is connected to a carry motor via a paper feed clutch and rotates using the carry motor as a power source. The rotational force of the transport motor is transmitted to the paper feed roller 37 via the paper feed clutch. The paper feed clutch is controlled by the CPU 111 and changes its state between a disconnected state and a connected state. When the paper feed clutch is in the connected state, the rotational force of the transport motor is transmitted to the paper feed roller 37, and when the paper feed clutch is in the disconnected state, the rotational force of the transport motor is not transmitted to the paper feed roller 37.

  When a sheet is placed on the manual feed cassette 35C, the take-out roller 36C is pressed against the paper by the manual feed solenoid. The take-out roller 36C is rotated by a transportation motor as a power source and supplies the sheet to the transportation path.

  The registration roller 31 is a transfer roller that transfers the paper conveyed by the paper feed roller 37, the take-out roller 36C, or the double-sided conveyance roller 38 described later in accordance with the timing when the toner image formed on the intermediate transfer belt 30 reaches the transfer roller 26. 26. The registration roller 31 is connected to a conveyance motor via a registration clutch and rotates using the conveyance motor as a power source. The rotational force of the carry motor is transmitted to the paper feed roller 37 via the registration clutch. The registration clutch is controlled by the CPU 111 and changes its state between a disconnected state and a connected state. When the registration clutch is in the connected state, the rotational force of the transport motor is transmitted to the sheet feeding roller 37, and when the registration clutch is in the disconnected state, the rotational force of the transport motor is not transmitted to the sheet feeding roller 37.

  The toner image formed on the intermediate transfer belt 30 is transferred onto a sheet by the transfer roller 26. The sheet on which the toner image is transferred is conveyed to the fixing roller pair 32 and heated by the fixing roller pair 32. As a result, the toner is melted and fixed on the paper. The fixing roller pair 32 rotates using a fixing motor as a drive source. Further, the rotation shaft of one of the fixing rollers of the fixing roller pair 32 is movable by using the fixing pressure separation motor as a power source. As a result, the distance between the rotating shafts of the fixing roller pair 32 is adjusted to a distance corresponding to the thickness of the paper. The sheet passing through the fixing roller pair 32 is cooled by the sheet cooling fan and discharged to the sheet discharge tray 159. The paper cooling fan rotates using a motor as a power source.

  In the double-sided print mode in which images are formed on the front and back sides of the sheet, the sheet conveyed through the conveying path is guided to the double-sided conveying path after the toner image is fixed on the surface by the fixing roller pair 32. A double-sided conveyance roller 38 is provided in the double-sided conveyance path and rotates by using a double-sided conveyance motor as a power source. The double-sided transport roller 38 rotates in the forward direction to transport the sheet, and then reversely rotates to transport the sheet. As a result, the sheet passing through the double-sided conveyance path is conveyed to the registration roller 31 with its front and back reversed.

  A removing device 28 is provided upstream of the image forming unit 20Y on the intermediate transfer belt 30. The removing device 28 removes the toner remaining on the intermediate transfer belt 30. The toner collected by the removing device 28 is carried to the waste toner bottle by a screw which rotates using a waste toner carrying motor as a power source.

  The MFP 100 drives all the image forming units 20Y, 20M, 20C, 20K when forming a full-color image, but when forming a monochrome image, any one of the image forming units 20Y, 20M, 20C, 20K is formed. Drive one. Further, an image can be formed by combining two or more of the image forming units 20Y, 20M, 20C and 20K. Although the MFP 100 will be described here as a tandem system that includes image forming units 20Y, 20M, 20C, and 20K that form toners of four colors on a sheet, the MFP 100 uses four photosensitive drums of four colors. A four-cycle method in which toner is sequentially transferred to a sheet may be used.

  Further, the MFP 100 includes a power supply circuit that takes in the power supplied from the commercial power supply and supplies the power to each member, and a power supply cooling fan for cooling the power supply circuit. The power supply cooling fan rotates using a motor as a power source.

  In the MFP 100 according to the present embodiment, as an example of the members that are driven as described above, a scan motor, a conveyance motor, a PC motor, a fixing motor, a developing motor, a toner replenishing motor, a toner bottle motor, a fixing pressure release motor, and a waste toner conveyance. Motor, skew correction motor, power supply cooling fan, toner bottle cooling fan, paper cooling fan, paper feed clutch, registration clutch, primary transfer pressure bonding clutch, first stage cassette motor, second stage cassette motor, third stage It is equipped with a cassette motor, a manual solenoid, and a double-sided transfer motor. Each of these members is connected to a drive circuit that controls the member. The drive circuit includes an abnormality detection circuit that detects an abnormality of a member to be controlled. The abnormality detection circuit outputs an abnormality signal indicating that the member is abnormal.

  In order to control each of the plurality of members, the CPU 111 outputs a control signal to a drive circuit that controls the member to be controlled, and causes the drive circuit to control the member. Further, when any one of the plurality of members becomes abnormal, the CPU 111 detects the abnormal member. In the present embodiment, each of the plurality of members is classified into any of a plurality of groups. A plurality of members are classified into one group. Each of the plurality of members belonging to a certain group has a driving period in which it is driven differently from the driving periods of all the other members. Specifically, the plurality of members belonging to a certain group include only a plurality of members having different driving start times for starting the driving and a plurality of members having the same driving start time and different driving end times for ending the driving. Further, the plurality of members belonging to a certain group may include only a plurality of members at different driving start points at which driving is started. Further, the plurality of members belonging to a certain group may include only a plurality of members having different driving end points.

  MFP 100 includes a plurality of conversion circuits respectively corresponding to a plurality of groups. The conversion circuit converts an abnormal signal corresponding to the plurality of members belonging to the corresponding group into an integrated signal indicating that at least one of the plurality of members is abnormal. The conversion circuit outputs the integrated signal to the CPU 111. When the integrated signal is input from the conversion circuit, the CPU 111 detects that at least one of the plurality of members belonging to the group corresponding to the conversion circuit has become abnormal.

  FIG. 4 is a diagram illustrating an example of the conversion circuit according to the first embodiment. In FIG. 4, seven members A to G belong to the same group. The members A to G are connected to the drive circuits 200A to 200G, respectively. Each of the drive circuits 200A to 200G includes output terminals 202A to 202G that output an abnormal signal. For example, the drive circuit 200A outputs an abnormality signal indicating that the member A to be controlled is abnormal from the output terminal 202A. The drive circuit 200A makes the voltage of the output terminal 202A high while detecting the abnormality of the member, and makes the voltage of the output terminal 202A low while not detecting the abnormality of the member. Therefore, the abnormal signal is output from the output terminal 202A with the voltage of the output terminal 202A being in a high state.

  A conversion circuit 210 indicated by a thick line in the drawing converts an abnormality signal output from each of the drive circuits 200A to 200G into an integrated signal indicating that at least one of the plurality of members A to G is abnormal. The CPU 111 has a first input terminal 111A to which an integrated signal is input. The conversion circuit 210 connects the output terminals 202A to 202G of the drive circuits 200A to 200G and the first input terminal 111A of the CPU 111, respectively. Therefore, the first input terminal 111A becomes high when at least one of the output terminals 202A to 202G is high. Moreover, when all the output terminals 202A to 202G are low, the first input terminal 111A becomes low. As described above, the integrated signal is input to the first input terminal 111A with the first input terminal 111A being in the high state. Therefore, the CPU 111 detects the integrated signal when the first input terminal 111A is high.

  Further, the CPU 111 outputs a control signal to the drive circuits 200A to 200G to which the members A to G are respectively connected in order to control the members A to G.

  Although FIG. 4 shows one conversion circuit 210 corresponding to one group, the MFP 100 includes a plurality of conversion circuits 210 respectively corresponding to a plurality of groups.

  FIG. 5 is a diagram showing an example of the drive circuit. Here, the member A is used as a motor, and the drive circuit 200A for controlling the member A is shown as an example. Referring to FIG. 5, drive circuit 200A controls the switch in accordance with a control signal input from CPU 111 to rotate member A in the normal or reverse direction. The drive circuit 200A also includes an abnormality detection circuit 201A. The abnormality detection circuit 201A is configured so that the output terminal 202A becomes high when the current flowing through the member A exceeds the threshold value. Further, the abnormality detection circuit 201A is configured so that the output terminal 202A becomes low when no current flows through the member A. Therefore, the abnormality detection circuit 201A keeps the output terminal 202A high while the current flowing through the member A exceeds the threshold value. In other words, the drive circuit 200A continuously outputs the abnormality signal while driving the member A to be controlled when the member A to be controlled becomes abnormal.

  Although the abnormality detection circuit 201A detects the overcurrent flowing through the member A, a circuit for measuring the temperature of the member A is provided separately or in addition to this, and the temperature of the member A is set to a predetermined value. The output terminal 202A may be configured to be high when the threshold value is exceeded. Further, the drive circuits 200B to 200G can have the same configuration as the drive circuit 200A.

  FIG. 6 is a block diagram showing an example of functions of the CPU included in the MFP according to the first embodiment. The functions of the CPU 111 shown in FIG. 6 are realized by the CPU 111 of the MFP 100 by executing the abnormality detection program stored in the ROM 113, the HDD 115, or the CD-ROM 118A. Here, the case where the members A to G belong to the same group and the integrated signal is input to the first input terminal 111A of the CPU 111 by the conversion circuit 210 illustrated in FIG. 4 will be described as an example.

  Referring to FIG. 6, CPU 111 includes a member control unit 51, an abnormal member determination unit 53, and an integrated signal detection unit 55. The member control unit 51 controls the plurality of members A to G using a control signal including a start signal instructing to start driving and an end signal instructing to end driving. Specifically, the member control unit 51 outputs a control signal to the drive circuits 200A to 200G to which the plurality of members A to G are connected in order to control the plurality of members A to G, respectively.

  The integrated signal detection unit 55 monitors the first input terminal 111A and detects the integrated signal. The integrated signal is input from the conversion circuit 210 to the first input terminal 111A as shown in FIG.

  The abnormal member determination unit 53 determines an abnormal member that has become abnormal from the members A to G in response to the integrated signal being detected by the integrated signal detection unit 55. Specifically, the abnormal member determination unit 53 determines, among the members A to G, the member driven by the member control unit 51 at the time when the integrated signal is input, as the abnormal member. The abnormal member determination unit 53 notifies the user that an abnormality has occurred in the abnormal member. Specifically, the display unit 161 displays the member identification information for identifying the abnormal member.

  FIG. 7 is a diagram showing an example of operating states of the members A to G and an integrated signal. The horizontal axis shows the flow of time. The driving period in which each of the members A to G is driving is different from the driving period in each of all the other members. For example, the member A and the member B have different drive start times. Further, the member A and the member F have the same drive start time but different drive end times. Further, there is no member being driven during the driving period of the member D. Therefore, the period during which the integrated signal is detected coincides with the driving period of the member D, so that it can be determined that the member D is abnormal.

  FIG. 8 is a first diagram showing an example of the operating state and the integrated signal when the driving periods of the two members A and B overlap. Referring to FIG. 8, the member A and the member B have the same driving start time point but different driving end time points. Therefore, it is possible to determine that the member B in the same drive period as the period in which the integrated signal is detected is abnormal.

  FIG. 9 is a second diagram showing an example of the operating state and the integrated signal when the driving periods of the two members A and B overlap. Referring to FIG. 9, member A and member B have the same driving start time point but different driving end time points. Therefore, it is possible to determine that the member A in the same drive period as the period in which the integrated signal is detected is abnormal.

  FIG. 10 is a third diagram showing an example of the operation state and the integrated signal when the driving periods of the two members A and B overlap. Referring to FIG. 10, the member A and the member B have the same driving start time point but different driving end time points. Therefore, it is possible to determine that the member B in the same drive period as the period in which the integrated signal is detected is abnormal.

  FIG. 11 is a flowchart showing an example of the flow of abnormality detection processing according to the first embodiment. The abnormality detection process is a process executed by the CPU 111 when the CPU 111 included in the MFP 100 executes the abnormality detection process program stored in the ROM 113, the HDD 115, or the CD-ROM 118A. Referring to FIG. 11, CPU 111 starts image processing (step S01). Specifically, the CPU 111 determines a drive start time point at which the drive of each of the members A to G is started and a drive stop time point at which the drive is stopped in order to execute the image processing determined by the operation input by the user to the operation unit 163. To do. Then, the CPU 111 controls the members A to G based on the driving start time and the driving stop time that are determined for each of the members A to G. For example, when the current time reaches the drive start time determined for the member A, the CPU 111 outputs a control signal instructing the drive circuit 200A to which the member A is connected to start the drive. Further, the CPU 111 outputs a control signal for instructing the driving circuit 200A to which the member A is connected to stop the driving when the current time reaches the determined driving end time for the member A.

  The CPU 111 determines whether or not the integrated signal is detected (step S02). When the first input terminal 111A goes high, the integrated signal is detected. CPU 111 advances the process to step S03 if an integrated signal is detected, but advances the process to step S06 if not. In step S06, it is determined whether or not the image processing started in step S01 is completed. If the image processing is completed, the processing is ended. If not, the processing is returned to step S02.

  In step S03, driving of members A to G is stopped, and the process proceeds to step S04. In step S04, the abnormal member is determined and the process proceeds to step S05. The member being driven at the time when the integrated signal is detected is determined to be an abnormal member. Then, the abnormality is displayed and the process ends. Of the members A to G, the member identification information for identifying the member determined to be the abnormal member in step S04 is displayed on the display unit 161. As a result, the service person in charge of repairing the MFP 100 can be notified of the abnormal member that has become abnormal. Therefore, the service person can immediately perform work such as replacement of the abnormal member.

  As described above, in MFP 100 according to the first embodiment, each of the plurality of members is classified into one of the plurality of groups. MFP 100 includes a conversion circuit 210 that converts, for each of a plurality of groups, at least one of a plurality of members belonging to the group into an integrated signal, and detects an integrated signal corresponding to any of the plurality of groups. Among the plurality of members belonging to the group corresponding to the integrated signal, the member driven at the time of detecting the integrated signal is determined to be abnormal. For this reason, the member that has been driven at the time when the integrated signal is detected among the plurality of members A to G is determined to be abnormal. Therefore, the CPU 111 causes the first input terminal 111A to which the integrated signal is input from the conversion circuit 210 to be input. Be prepared. Therefore, the number of first input terminals 111A of the CPU 111 can be reduced to simplify the circuit configuration and reduce the cost. Further, the CPU 111 specifies the member that has become abnormal when any of the plurality of members becomes abnormal without detecting whether or not each of the plurality of members A is abnormal at different times. You can Therefore, when any one of the plurality of members becomes abnormal, the abnormal member can be identified.

  Further, the driving period in which each of the plurality of members A to G connected to the conversion circuit 210 is driven is different from the driving period in each of all the other members. Therefore, it is possible to determine that a member in which the driving period is the same as the period in which the integrated signal is detected is abnormal from the members A to G.

  Further, the plurality of members A to G connected to the conversion circuit 210 have different driving start points. For this reason, it is possible to determine that a member, of the members A to G, whose time point at which the integrated signal is detected coincides with the driving start time point is abnormal.

  Further, the plurality of members A to G connected to the conversion circuit 210 have the same driving start time point and different driving end time points. Therefore, it is possible to determine that a member in which the driving period is the same as the period in which the integrated signal is detected is abnormal from the members A to G.

  Further, the plurality of members A to G connected to the conversion circuit 210 have different driving end points. Therefore, it is possible to determine that a member in which the integrated signal is not detected from the members A to G and the driving end time are the same is abnormal.

<Second Embodiment>
In MFP 100 according to the first embodiment, a plurality of members respectively belonging to a plurality of groups are fixed. The MFP 100 according to the second embodiment is different from the MFP 100 according to the first embodiment in that a plurality of members respectively belonging to a plurality of groups are changed according to operation conditions of image processing. The differences between MFP 100 according to the second embodiment and MFP 100 according to the first embodiment will be mainly described below.

  FIG. 12 is a diagram illustrating an example of the conversion circuit according to the second embodiment. In FIG. 12, the conversion circuit 210A is connected to each of the drive circuits 200A to 200G to which the members A to G are connected. The conversion circuit 210A outputs switches 211A to 211G connected to the output terminals 202A to 202G of the drive circuits 200A to 200G, a serial-parallel conversion integrated circuit (IC) 213, and a first output that outputs an integrated signal of the first group. A terminal 215 and a second output terminal 217 that outputs a second group integrated signal are included. The first output terminal 215 is connected to the first input terminal 111A of the CPU 111, and the second output terminal 217 is connected to the second input terminal 111B of the CPU 111. The switches 211 to 211G switch the connection destinations of the output terminals 202A to 202G of the drive circuits 200A to 200G to either the first output terminal 215 or the second output terminal 217.

  A switching signal is input from the CPU 111 to the serial-parallel conversion IC 213. The switching signal is a serial signal. The serial-parallel conversion IC controls the switches 211A to 211G based on the switching signal. Therefore, the CPU 111 can classify one or more of the members A to G into the first group by outputting the switching signal to the serial-parallel conversion IC, and the second group can be classified into the members A to G. One or more of them can be classified.

  Further, in the conversion circuit 210A, the first output terminal 215 goes high when at least one of the output terminals of the drive circuit corresponding to the plurality of members classified into the first group by the switching signal is high, and the first output terminal 215 of the CPU 111 becomes high. Input terminal 111A goes high. Further, when at least one of the output terminals of the driving circuit corresponding to the plurality of members classified into the second group by the switching signal is high, the second output terminal 217 becomes high, and the second input terminal 111B of the CPU 111 becomes Get high Therefore, the CPU 111 detects the integrated signal for the first group when the first input terminal 111A is high, and detects the integrated signal for the second group when the second input terminal 111B is high.

  FIG. 13 is a block diagram illustrating an example of functions of the CPU included in the MFP according to the second embodiment. The function of the CPU 111 shown in FIG. 13 is different from the function of the CPU 111 shown in FIG. 6 in that an operation condition acquisition unit 57 and a group determination unit 59 are added. The other functions are the same as those shown in FIG.

  The operation condition acquisition unit 57 acquires the operation condition of image processing. The operation conditions of the image processing include a copy mode for executing the copy processing, a scan mode for executing the scan processing, a print mode for executing the print processing, and a facsimile transmission / reception processing for transmitting / receiving facsimile data. Further, the operating condition may be determined by an operation input by the user on the operation unit 163. For example, the operating conditions include an operating condition in the ADF copy mode in which the automatic document feeder 120 is used in the copy mode, an operating condition in the normal copy mode in which the automatic document feeder 120 is not used in the copy mode, and an image is formed on one side of a sheet. It may include operating conditions in the single-sided print mode and operating conditions in the double-sided print mode in which images are formed on both sides of the paper. Further, the operating condition may include an operating condition in a power saving mode, which consumes less power than usual, or an operating condition in a startup mode. The start-up mode is an operation mode in which the members A to G are ready for image processing after the MFP 100 is powered on.

  The group determination unit 59 determines a combination of a plurality of members belonging to the group with respect to the operation condition acquired by the operation condition acquisition unit 57. For example, in the case where the member A and the member C have different driving periods of the member A and the member C when the image processing is performed under the operating condition A, but the image processing is performed under the operating condition B. The driving period of the member A and the driving period of the member C may be the same. The group determination unit 59 classifies the member A and the member C into the same group when the operation condition A is determined, and classifies the member A and the member C into another group when the operation condition B is determined. To do.

  FIG. 14 is a diagram showing an example of group organization according to operating conditions. In this example, the relationship between the driving periods under the operating conditions of the members A to G is as follows. The member A has a different driving period from the members C and D under the operating condition A. Further, the member A has the same driving period as either the member C or the member D under the operating condition B, but the driving period is different from the members E, F and G. The member B has a different driving period from the members E, F, and G under the operating condition A. Further, the member B has the same drive period as any one of the member E, the member F, and the member G under the operating condition B, but the drive period is different from that of the members C and D.

  Referring to FIG. 14, members A to G each belong to either the first group or the second group. In the operating condition A, the members A, C and D belong to the first group, and the members B, E, F and G belong to the second group. In the operating condition B, the members B, C and D belong to the first group, and the members A, E, F and G belong to the second group.

  FIG. 15 is a flowchart showing an example of the flow of abnormality detection processing according to the second embodiment. Referring to FIG. 15, CPU 111 acquires an operation condition for executing image processing (step S11). The operating conditions include a copy mode for executing a copy process, a scan mode for executing a scan process, a print mode for executing a print process, and a facsimile transmission / reception process for transmitting / receiving facsimile data.

  In the next step S12, the group is determined and the process proceeds to step S13. A predetermined group is determined corresponding to the acquired operating condition. Specifically, a plurality of members included in the group are determined. Here, a case where a plurality of members belonging to the first group and the second group are determined according to the group organization shown in FIG. 14 will be described as an example. In step S13, a switching signal is output to conversion circuit 210A, and the process proceeds to step S14. For example, when the operating condition A is determined, the member A, the member C, and the member D are classified into the first group, and the member B, the member E, the member F, and the member G are classified into the second group. When the operating condition B is determined, the member B, the member C, and the member D are classified into the first group, and the member A, the member E, the member F, and the member G are classified into the second group.

  Specifically, when the operating condition A is determined, the first switching signal is output to the conversion circuit 210A, and when the operating condition B is determined, the second switching signal is output to the conversion circuit 210A. The first switching signal is a signal for instructing switching of each of the switches 211A, 211C, 211D to the first output terminal 215 side and switching of each of the switches 211B, 211E, 211F, 211G to the second output terminal 217 side. The second switching signal is a signal for instructing switching of each of 211B, 211C and 211D to the first output terminal 215 side and switching of each of the switches 211A, 211E, 211F and 211G to the second output terminal 217 side. Hereinafter, a case where the operating condition is determined to be the operating condition A will be described.

  In step S14, image processing is started under the operating conditions acquired in step S11. Then, it is determined whether the integrated signal is detected. The integrated signal of the first group is detected when the first output terminal 215 of the conversion circuit 210A goes high, and the integrated signal of the second group is detected when the second output terminal 217 of the conversion circuit 210A goes high. To do. If the integrated signal of the first group or the integrated signal of the second group is detected, the process proceeds to step S03. If not, the process proceeds to step S06. In step S06, it is determined whether or not the process started in step S14 has ended. If the image processing is completed, the processing is ended. If not, the processing is returned to step S15.

  Hereinafter, a case where the integrated signal of the first group is detected in step S15 will be described as an example. In step S03, driving of members A to G is stopped, and the process proceeds to step S04. In step S04, the abnormal member is determined and the process proceeds to step S05. Among the members A, C, and D belonging to the first group, the member that is being driven at the time when the integrated signal of the first group is detected is determined as an abnormal member. Then, the abnormality is displayed and the process ends. Among the members A, C, and D, the member identification information for identifying the member determined to be the abnormal member in step S04 is displayed on the display unit 161. As a result, the service person in charge of repairing the MFP 100 can be notified of the abnormal member that has become abnormal. Therefore, the service person can immediately perform work such as replacement of the abnormal member.

<First Modification>
FIG. 16 is a diagram illustrating an example of the conversion circuit according to the first modification. Referring to FIG. 16, the difference from FIG. 12 is that serial-parallel conversion IC 213 and switches 211C to 211G are deleted. The output terminal of the drive circuit 200A is connected to the switch 211A. The switch 211A switches the connection destination of the output terminal 202A of the drive circuit 200A to either the first output terminal 215 or the second output terminal 217 according to the switching signal input from the CPU 111. The output terminal 202B of the drive circuit 200B is connected to the switch 211B. The switch 211B switches the connection destination of the output terminal of the drive circuit 200B to either the first output terminal 215 or the second output terminal 217 according to the switching signal input from the CPU 111. Therefore, the members A and B are classified by the CPU 111 into either the first group or the second group.

  The output terminals 202C and 202D of the drive circuits 200C and 200D are connected to the first output terminal 215. Therefore, the members C and D are classified into the first group. The output terminals 202E to 202G of the drive circuits 200E to 200G are connected to the second output terminal 217. Therefore, the members E to G are classified into the second group.

<Second Modification>
FIG. 17 is a diagram illustrating an example of the conversion circuit according to the second modification. Referring to FIG. 17, a point different from FIG. 12 is that an integrated circuit 220 for controlling members B to G is added. In the second modification, the member A is a motor, and each of the members B to G is a solenoid or a clutch.

  The integrated circuit 220 controls each of the members B to G according to the control signal input from the CPU 111. The integrated circuit 220 includes an overcurrent detection circuit 221 and an overheat detection circuit 223. The overcurrent detection circuit 221 is configured to set the output terminal 203 to high when an overcurrent flows through any of the members B to G. Further, the overheat detection circuit 223 is configured to set the output terminal 203 to high when the temperature of any of the members B to G becomes equal to or higher than the threshold value.

  A conversion circuit 210B indicated by a thick line in the drawing converts an abnormal signal output from each of the drive circuit 200A and the integrated circuit 220 into an integrated signal indicating that at least one of the plurality of members A to G is abnormal. The conversion circuit 210B connects the output terminal 202A of the drive circuit 200A and the first input terminal 111A of the CPU 111, and connects the output terminal 203 of the integrated circuit 220 and the first input terminal 111A of the CPU 111. Therefore, when at least one of the output terminal 202A of the drive circuit 200A and the output terminal 203 of the integrated circuit 220 is high, the first input terminal 111A becomes high. When the output terminal 202A of the drive circuit 200A and the output terminal 203 of the integrated circuit 220 are all low, the first input terminal 111A is low. In this way, the conversion circuit 210B inputs the integrated signal to the first input terminal 111A when at least one of the drive circuit 200A and the integrated circuit 220 outputs an abnormal signal. Therefore, the CPU 111 detects the integrated signal when the first input terminal 111A is high.

  As described above, in MFP 100 according to the second embodiment, conversion circuit 210 changes a plurality of members connected to first input terminal 111A of CPU 111 according to the operating condition based on the operating condition. Therefore, even if the operating conditions are different, the driving periods of the plurality of members connected to the first input terminal 111A can be made different.

<Third Embodiment>
In MFP 100 according to the first and second embodiments, the driving period of each of the plurality of members belonging to the plurality of groups is different from the driving period of each of the other members. On the other hand, in the MFP 100 according to the third embodiment, the driving periods of the plurality of members respectively belonging to the plurality of groups may be the same as the driving periods of the other members. The differences between the MFP 100 according to the third embodiment and the MFP 100 according to the first embodiment will be mainly described below.

  The MFP 100 according to the third embodiment includes the conversion circuit 210 shown in FIG. In this case, one of the members A to G can be the drive inhibiting member. Here, a case where the member G is a drive prohibiting member will be described as an example.

  FIG. 18 is a block diagram illustrating an example of functions of the CPU included in the MFP according to the third embodiment. 18, the member control unit 51 and the abnormal member determination unit 53 are different from the functions of the CPU 111 according to the first embodiment shown in FIG. 6 in the member control unit 51A and the abnormal member determination unit 53A. These are the changed points and the addition of the drive prohibition member setting section 67. Since other functions are the same as those shown in FIG. 6, description thereof will not be repeated here.

  The drive prohibition member setting unit 67 sets a drive prohibition member that is prohibited to be driven independently when image processing is not being executed. The drive prohibition member setting unit 67 sets the drive prohibition member according to an operation input by the user on the operation unit 163. The drive inhibiting member is, for example, a skew correction motor, a toner replenishing motor, or a toner bottle motor. This is because if the skew correction motor is driven alone, the direction in which the exposure head 21Y scans the photosensitive drum 23Y one-dimensionally is changed, but adjustment of this direction becomes a difficult task. This is because if the toner replenishment motor and the toner bottle motor are driven independently, the toner may overflow.

  The member control unit 51A controls the plurality of members A to G using a control signal including a start signal instructing the start of driving and an end signal instructing the end of driving. Specifically, the member control unit 51 outputs a control signal to the drive circuits 200A to 200G to which the plurality of members A to G are connected in order to control the plurality of members A to G, respectively. The member control unit 51A includes a candidate member determination unit 61, a priority order determination unit 63, and an independent control unit 65.

  In response to the integrated signal being detected by the integrated signal detection unit 55, the candidate member determination unit 61 determines, as the candidate member, the member that is being driven at the time when the integrated signal is input from the members A to G. To do. The candidate member determination unit 61 outputs member identification information for identifying the candidate member to the abnormal member determination unit 53A when there is one candidate member. When there are a plurality of candidate members, the candidate member determination unit 61 outputs the member identification information of each of the plurality of candidate members to the priority order determination unit 63.

  The priority order determination unit 63 determines the priority order for each of the plurality of candidate members. Here, the priority order determination unit 63 determines the priority order in ascending order of the cumulative driving time obtained by accumulating the accumulated driving times.

  The independent control unit 65 drives the plurality of candidate members independently according to the priority order. The independent control unit 65 sequentially selects candidate members having a long cumulative driving time and drives the selected candidate members independently. However, the independent control unit 65 does not drive the candidate member alone when the candidate member is set as the drive prohibition member. Here, when the member G is determined as a candidate member, the independent control unit 65 does not drive the member G alone.

  When one candidate member is determined by the candidate member determination unit 61, the abnormal member determination unit 53A determines the candidate member as an abnormal member. When the candidate member determination unit 61 determines a plurality of candidate members, the abnormal member determination unit 53A detects the integrated signal by the integrated signal detection unit 55 while the independent control unit 65 drives the candidate members alone. The candidate member is determined to be an abnormal member on the condition that the above condition is satisfied. The abnormal member determination unit 53A does not determine the candidate member as an abnormal member when the integrated signal detection unit 55 does not detect the integrated signal while the independent control unit 65 drives the candidate member alone. The abnormal member determination unit 53A determines the candidate member G, which is the drive prohibition member, as the abnormal member when the integrated control unit 65 does not detect the integrated signal even when all the candidate members other than the drive prohibition member are driven independently.

  When determining the abnormal member, the abnormal member determination unit 53A notifies the user that an abnormality has occurred in the abnormal member. Specifically, the display unit 161 displays the member identification information for identifying the abnormal member.

  FIG. 19 is a diagram showing an example of the unit drive time table. With reference to FIG. 19, the unit drive time table shows the unit drive time of each member when the image processing is executed in each of the print mode, the copy mode, and the scan mode as the operation condition. The unit drive time indicates the time during which the member is driven while the image processing is performed once under the operating condition.

  FIG. 20 is a diagram showing an example of the operation history table. With reference to FIG. 20, the operation history table includes a plurality of history records. The history record is added to the operation history table every time image processing is executed under the same operation condition. The history record includes a number item, an operation condition item, and a number of copies item. The item of number is information for identifying the image processing executed under the same operating condition. In the item of operation condition, the operation condition under which the image processing is executed is set. The item of the number of copies indicates the number of times the image processing is executed.

  The cumulative drive time can be calculated for each member from the operation history and the unit drive time of the member. Specifically, since the operation condition and the number of times of image processing are determined for each history record, the driving time for each plurality of members can be obtained for each history record. The cumulative drive time for each of the plurality of members is calculated by accumulating the drive time for each of the plurality of members obtained for each of the plurality of history records for each of the plurality of members. Alternatively, the cumulative drive time for each of the plurality of members may be obtained by calculating the cumulative total of the times for driving each of the plurality of members.

  FIG. 21 is a flowchart showing an example of the flow of abnormality detection processing according to the third embodiment. With reference to FIG. 21, steps S21 to S23 and step S37 are the same as steps S01 to S03 and step S06 shown in FIG. 11, respectively, and therefore description thereof will not be repeated here.

  CPU111 determines a candidate member in step S24, and advances a process to step S25. One or more members that are being driven when the integrated signal is detected in step S22 are determined as candidate members. Here, the case where the members A, B, and G are determined as the candidate members will be described as an example.

  In step S25, it is determined whether the drive inhibiting member is included in the one or more candidate members. If the drive inhibition member is included, the process proceeds to step S26. If not, step S26 is skipped and the process proceeds to step S27. In step S26, the member G that is the drive-inhibiting member is excluded from the processing target, and the process proceeds to step S27. In step S27, priority order determination processing is executed, and the processing proceeds to step S28. Although details of the priority order determination process will be described later, the priority order determination process is a process of determining the priority order of each of one or more candidate members to be processed.

  In step S28, one or more candidate members to be processed are selected in descending order of priority as targets for single drive, and the process proceeds to step S29. In step S29, the selected candidate member is driven alone, and the process proceeds to step S30. In step S30, it is determined whether the integrated signal is detected. When the first input terminal 111A goes high, the integrated signal is detected. CPU 111 advances the process to step S31 if an integrated signal is detected, but advances the process to step S33 otherwise.

  In step S31, the candidate member driven alone in step S29 is determined as an abnormal member, and the process proceeds to step S32. Then, the abnormality is displayed (step S32), and the process ends. Of the members A and B, the member identification information for identifying the member determined to be the abnormal member in step S04 is displayed on the display unit 161. As a result, the service person in charge of repairing the MFP 100 can be notified of the abnormal member that has become abnormal. Therefore, the service person can immediately perform work such as replacement of the abnormal member.

  In step S33, it is determined whether or not there is a candidate member that has not been selected as a target for independent driving in step S28. If there is an unselected candidate member, the process returns to step S28, but if not, the process proceeds to step S34. In step S34, it is determined whether or not the drive inhibiting member excluded from the processing target in step S26 exists. If the drive inhibiting member is present, the process proceeds to step S35. If not, the process proceeds to step S36. Here, since the member G exists as the drive inhibiting member, the member G that is the drive inhibiting member is determined to be an abnormal member in step S35, and the process proceeds to step S32. In step S36, it is displayed on the display unit 161 that the integrated signal detected in step S22 is in error, and the process ends.

  When the process proceeds from step S34 to step S36, one or more members that have not been selected as candidate members may be driven independently before executing step S35.

  FIG. 22 is a flowchart showing an example of the flow of priority order determination processing. The priority order determination process is a process executed in step S27 of FIG. Referring to FIG. 22, CPU 111 obtains the cumulative drive time of each of one or more candidate members (step S41), and advances the process to step S42. In step S42, the priority is determined for each of the one or more candidate members in descending order of cumulative driving time, and the process is returned to the abnormality detection process.

<Third Modification>
FIG. 23 is a flowchart showing an example of the flow of priority order determination processing in the third modification. The priority order determination process in the third modification is the process executed in step S27 of FIG. Referring to FIG. 23, CPU 111 acquires the cumulative drive time of each of one or more candidate members (step S41), and advances the process to step S41A. In step S41A, the life time of each of the one or more candidate members is acquired, and the process proceeds to step S42A. In step S42A, the priority order is determined for each of the one or more candidate members in ascending order of the remaining time, and the process is returned to the abnormality detection process. The remaining time is a value obtained by subtracting the cumulative drive time from the life time.

  FIG. 24 is a diagram showing an example of the remaining time table. Referring to FIG. 24, the remaining time table defines the life time for each of the plurality of members.

<Fourth Modification>
FIG. 25 is a flowchart showing an example of the flow of priority order determination processing in the fourth modified example. The priority order determination process in the fourth modified example is the process executed in step S27 of FIG. Referring to FIG. 25, CPU 111 obtains the drive frequency of each of one or more candidate members (step S41B), and advances the process to step S42B. In step S42B, the priority order is determined in descending order of driving frequency for each of the one or more candidate members, and the process is returned to the abnormality detection process.

  FIG. 26 is a diagram showing an example of the drive frequency table. With reference to FIG. 26, the drive frequency table indicates the number of times a member is driven when image processing is performed once for each of a plurality of members in the print mode, copy mode, and scan mode. .

  The cumulative drive frequency can be calculated for each member from the operation history defined in the operation history table shown in FIG. 20 and the number of times the member is driven defined in the drive frequency table. Specifically, since the operation condition and the number of times of image processing are determined for each history record, the number of times of driving for each plurality of members can be obtained for each history record. The cumulative drive frequency for each of the plurality of members is calculated by integrating the drive frequencies for each of the plurality of members obtained for each of the plurality of history records for each of the plurality of members. The driving frequency may be calculated for each of the plurality of members by calculating the total number of times each of the plurality of members has been driven.

<Fifth Modification>
FIG. 27 is a flowchart showing an example of the flow of priority order determination processing in the fifth modified example. The priority order determination process in the fifth modification is the process executed in step S27 of FIG. Referring to FIG. 27, CPU 111 acquires the safety contribution degree of each of one or more candidate members (step S41C), and advances the process to step S42C. In step S42C, a priority is determined for each of the one or more candidate members in descending order of safety contribution, and the process is returned to the abnormality detection process. The safety contribution is a value indicating the degree of safety of the member, and a member that is safer to drive has a higher value.

  FIG. 28 is a diagram showing an example of the safety contribution table. Referring to FIG. 28, the safety contribution table defines the safety contribution for each of a plurality of members.

<Sixth Modification>
The priority order is determined based on the cumulative drive time in the third embodiment, the remaining time in the third modification, the drive frequency in the fourth modification, and the safety contribution in the fifth modification. I decided to do it. The priority may be determined by combining two or more of the cumulative drive time, the remaining time, the drive frequency and the safety contribution. By using evaluation values common to them, the priority order may be determined in descending order of total evaluation values.

  The MFP 100 according to the third embodiment determines an abnormal member from the members A to G based on the control signal during the image processing operation and the integrated signal. The abnormal member can be quickly determined.

  Further, the MFP 100 sets, as candidate members, a plurality of members that have been driven at the time when the integrated signal is detected among the members A to B after detecting the integrated signal, and drive the candidate members independently. Therefore, it is possible to quickly identify the abnormal member from the members A to B.

  Further, the MFP 100 does not independently drive one or more members A to B that have not been driven at the time of detecting the integrated signal during the image processing operation. Therefore, the abnormal member can be quickly identified.

  Further, when determining an abnormal member from the members A to B, the MFP 100 does not drive one or more candidate members that have not been driven alone among the candidate members. Therefore, the processing can be quickly completed.

  Further, since the MFP 100 does not drive the drive prohibition member alone, it is possible to prevent the occurrence of a secondary problem that is predicted by driving it alone.

  In addition, when the MFP 100 does not detect the integrated signal even when one or more members other than the drive prohibiting member among the candidate members are individually driven, the MFP 100 determines that the drive prohibiting member is abnormal. Therefore, it is possible to determine that the drive inhibiting member is abnormal without driving the drive inhibiting member.

  Further, since the MFP 100 is independently driven in order from the member having the highest priority among the candidate members, it is possible to independently drive the member having a high probability of being abnormal. Therefore, it is possible to quickly identify the abnormal member.

  The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

<Appendix>
(1) The image processing apparatus according to claim 7, wherein the member control unit drives each of the plurality of members independently after detecting the integrated signal.
(2) In the case where the member control unit includes a drive prohibition member that is prohibited in advance to be driven independently while the plurality of the members are not performing image processing, the member control unit other than the drive prohibition member among the plurality of members. The image processing apparatus according to (1), wherein when the integrated signal is not detected even when each of the one or more members is independently driven, the drive inhibition member is determined to be abnormal.
(3) The member control unit determines that the integrated signal detected during image formation is an error if the integrated signal is not detected even when each of the plurality of members is driven independently. ) The image processing device described in (1).
(4) The image processing apparatus according to claim 13, wherein the member control unit drives the members individually in order from a member having a long cumulative driving time in which driving times are accumulated.
(5) The image processing apparatus according to claim 13, wherein the member control means drives the members individually in descending order of evaluation value determined by a predetermined life time and an accumulated drive time obtained by accumulating the drive time. .
(6) The image processing apparatus according to claim 13, wherein the member control unit independently drives the members in descending order of frequency of driving.
(7) The image processing apparatus according to claim 13, wherein the member control unit independently drives the members in descending order of safety contribution.
(8) If the number of the members that are being driven at the time when the integrated signal is detected is one of the plurality of members, the member control means has an abnormality in the member that is being driven at the time when the integrated signal is detected. The image processing apparatus according to claim 7, wherein the image processing apparatus determines that
(9) The member control unit, when detecting the integrated signal while driving the member alone, determines that the member being driven at the time when the integrated signal is detected is abnormal. The image processing apparatus according to claim 8.
(10) A plurality of drive circuits that respectively control the plurality of members are further provided,
Each of the plurality of drive circuits outputs the abnormality signal while detecting an abnormality of the member to be controlled,
7. The conversion unit outputs the integrated signal while any one of the plurality of drive circuits that respectively control the plurality of members belonging to the group for each of the plurality of groups outputs the abnormality signal. The image processing device according to item 1.
(11) The member control means outputs a control signal including a start signal for instructing the start of driving and an end signal for instructing the end of driving to the drive circuit for controlling the member to be controlled, and the plurality of the Based on the integrated signal and a plurality of control signals output to each of the plurality of members belonging to the target group in which the integrated signal is detected among the plurality of groups when the integrated signal is detected in any of the groups The image processing apparatus according to (10), wherein the abnormal member is determined from among the plurality of members belonging to the target group.
(12) A plurality of drive circuits for respectively controlling the plurality of members are further provided,
Each of the plurality of drive circuits outputs the abnormality signal in response to detecting an abnormality of the member to be controlled,
The image processing apparatus according to claim 7, wherein the conversion unit converts the abnormal signal output by at least one of the plurality of drive circuits into the integrated signal.
(13) The image processing apparatus according to any one of claims 1 to 13, wherein the plurality of members are movable members.
(14) The image processing device according to claim 6, wherein the plurality of operation conditions include respective operation conditions of a sleep mode, a start mode, a print mode, a normal copy mode, an ADF copy mode, a scan mode, and a FAX mode.
(15) The image processing device according to (14), wherein the plurality of operation conditions include a condition that determines a type of a recording medium on which an image is formed among a plurality of types of recording media.

  100 MFP, 111 CPU, 111A input terminal, 51, 51A member control unit, 53, 53A abnormal member determination unit, 55 integrated signal detection unit, 57 operation condition acquisition unit, 59 group determination unit, 61 candidate member determination unit, 63 priority Order determination unit, 65 independent control unit, 67 drive prohibition member setting unit, 20Y, 20M, 20C, 20K image forming unit, 21Y, 21M, 21C, 21K exposure head, 22Y, 22M, 22C, 22K charging charger, 23Y, 23M , 23C, 23K photoconductor drum, 24Y, 24M, 24C, 24K developing device, 25Y, 25M, 25, C, 25K transfer charger, 26 transfer roller, 30 intermediate transfer belt, 32 fixing roller pair, 41Y, 41M, 41C, 41K toner bottle, 200A to 200G drive circuit, 2 01A abnormality detection circuit, 202A to 202G output terminal, 210, 210A, 210B conversion circuit, 211C to 211G switch, 220 integrated circuit, 221 overcurrent detection circuit, 223 overheat detection circuit, 213 serial-parallel conversion IC.

Claims (17)

Member control means for controlling a plurality of members,
Each of the plurality of members is classified into any one of a plurality of groups, and at least one of the plurality of members outputs an abnormality signal indicating an abnormality of each of the plurality of members belonging to the group for each of the plurality of groups. Conversion means for converting into an integrated signal indicating that it is abnormal,
When the integrated signal corresponding to any one of the plurality of groups is detected, the member that is driven at the time when the integrated signal is detected among the plurality of members belonging to the group corresponding to the integrated signal An image processing apparatus including: an abnormal member determining unit that determines that the abnormal state.   The image processing apparatus according to claim 1, wherein in each of the plurality of groups, a driving period in which each of the plurality of members belonging to the group is driven is different from a driving period of each of all the other members.   The image processing apparatus according to claim 1, wherein each of the plurality of groups includes a plurality of members having different driving start points.   The image processing apparatus according to claim 3, wherein each of the plurality of groups further includes a plurality of members having the same driving start time and different driving end times.   The image processing apparatus according to claim 1, wherein each of the plurality of groups includes a plurality of members having different driving end points. Operating condition acquisition means for acquiring operating conditions,
Further comprising group determining means for determining the plurality of members respectively belonging to the plurality of groups based on the operation condition,
The conversion means converts the abnormal signal of each of the plurality of members determined by the group determination means for the group for each of the plurality of groups into the integrated signal. The image processing device described. Member control means for controlling a plurality of members using a control signal including a start signal for instructing the start of driving and an end signal for instructing the end of driving,
When an integrated signal indicating that at least one of the plurality of members is abnormal is detected during an image processing operation, the plurality of the plurality of the members are controlled based on the control signal for controlling each of the plurality of the members and the integrated signal. An image processing apparatus comprising: an abnormal member determining unit that determines the abnormal member from among the members.   When the member control unit drives the plurality of members at the time when the integrated signal is detected during the image processing operation among the plurality of members, when the integrated signal is detected during the image processing operation The image processing apparatus according to claim 7, wherein each of the plurality of members that have been driven by the method is driven independently after the integrated signal is detected.   The image processing according to claim 8, wherein the member control unit does not independently drive one or more of the plurality of members that have not been driven at the time when the integrated signal is detected during the image processing operation. apparatus.   After determining the abnormal member, the member control means drives one or more members that are not driven independently of the plurality of members that were driven when the integrated signal was detected. The image processing apparatus according to claim 8, which is not allowed. The plurality of members includes one drive prohibiting member that is previously prohibited to be driven independently while image processing is not performed,
The image processing apparatus according to claim 8, wherein the member control unit does not drive the drive prohibition member alone.   The member control means may independently drive one or more members other than the drive prohibiting member among the plurality of members that were being driven at the time when the integrated signal was detected among the plurality of members. The image processing apparatus according to claim 11, wherein when the integrated signal is not detected, the drive inhibition member is determined to be abnormal.   13. The image processing apparatus according to claim 8, wherein the member control unit drives the members in a descending order of priority determined for the plurality of members, in order. An abnormal member detection method executed by an image processing device, comprising:
In the image processing apparatus, each of the plurality of members is classified into one of a plurality of groups, and a plurality of abnormality signals indicating an abnormality of each of the plurality of members belonging to the group are provided for each of the plurality of groups. Conversion means for converting into an integrated signal indicating that at least one of the members is abnormal,
Controlling a plurality of said members,
When the integrated signal corresponding to any one of the plurality of groups is detected, the member that is driven at the time when the integrated signal is detected among the plurality of members belonging to the group corresponding to the integrated signal An abnormal member detection method, which causes the image processing apparatus to execute the step of determining that the abnormal member is abnormal. An abnormal member detection method executed by an image processing device, comprising:
A member control step of controlling a plurality of members using a control signal including a start signal instructing to start driving and an end signal instructing to end driving;
When an integrated signal indicating that at least one of the plurality of members is abnormal is detected during an image processing operation, the plurality of the plurality of the members are controlled based on the control signal for controlling each of the plurality of the members and the integrated signal. An abnormal member determination method for causing the image processing apparatus to execute an abnormal member determination step of determining the abnormal member from among the members. An abnormal member detection program executed by a computer controlling an image processing device,
In the image processing apparatus, each of the plurality of members is classified into one of a plurality of groups, and a plurality of abnormality signals indicating an abnormality of each of the plurality of members belonging to the group are provided for each of the plurality of groups. Conversion means for converting into an integrated signal indicating that at least one of the members is abnormal,
Controlling a plurality of said members,
When the integrated signal corresponding to any one of the plurality of groups is detected, the member that is driven at the time when the integrated signal is detected among the plurality of members belonging to the group corresponding to the integrated signal An abnormal member detection program that causes the computer to execute. An abnormal member detection program executed by a computer controlling an image processing device,
A member control step of controlling a plurality of members using a control signal including a start signal instructing to start driving and an end signal instructing to end driving;
When an integrated signal indicating that at least one of the plurality of members is abnormal is detected during an image processing operation, the plurality of the plurality of the members are controlled based on the control signal for controlling each of the plurality of the members and the integrated signal. An abnormal member detection program for causing the computer to execute an abnormal member determination step of determining the abnormal member from among the members.

Images