JP5262629B2 - Image forming apparatus and program - Google Patents

Description

  The present invention relates to an image forming apparatus and a program.

  2. Description of the Related Art Conventionally, an image forming apparatus including a detachable unit in which a plurality of replaceable parts are grouped is known. In such an image forming apparatus, when a part reaches the end of its life or a failure occurs, a unit on which the corresponding part is mounted is pulled out from the image forming apparatus and replaced. The replaced unit is collected, and a part that has reached the end of its life or has failed is replaced with a new one and reused.

  The replacement of the unit was performed by a service person, but there was a problem that the image forming apparatus was stopped for a long time (down time). Therefore, in recent years, there has been proposed an image forming apparatus in which a user can replace a unit by himself / herself without waiting for a service person when the component is near the end of its life or when a failure occurs in the component.

In such an image forming apparatus, for example, Patent Document 1 discloses a maintenance planning system capable of performing maintenance with high accuracy by managing the number of times of use of consumables and reducing downtime. Yes.
JP 2008-65824 A

  However, the above-described conventional technique does not manage the time required for the unit replacement work. In order to suppress the occurrence of downtime as much as possible, it is necessary not only to manage the life of consumables but also to accurately measure and manage the time required for unit replacement work.

  An object of the present invention is to provide an image forming apparatus and a program capable of accurately measuring and managing the time required for unit replacement work.

In order to solve the above problems, an image forming apparatus according to the present invention provides:
A detachable unit with a plurality of replaceable parts,
Storage means for storing the replacement start time and replacement end time of the unit;
Calculating means for calculating a time required for exchange from the exchange start time and the exchange end time stored in the storage means;
A setting means for newly setting the set time as the time required for the exchange when the calculated time exceeds a preset time;
Is provided.

The program of the present invention is
In a computer of an image forming apparatus provided with a detachable unit on which a plurality of replaceable parts are mounted,
A function of storing the replacement start time and replacement end time of the unit;
A function for calculating a time required for the exchange from the exchange start time and the exchange end time;
A function to newly set the set time as the time required for the exchange when the calculated time exceeds a preset time;
Is realized.

  According to the present invention, it is possible to provide an image forming apparatus and a program capable of accurately measuring and managing the time required for unit replacement.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the configuration will be described.
FIG. 1 shows a functional configuration example of the image forming apparatus 100 in the present embodiment.
As shown in FIG. 1, the image forming apparatus 100 includes a control unit 10, an operation unit 20, a scanner unit 30, a communication unit 40, a printer unit 50, a reader / writer unit 60, a power supply unit 80, and the like.

  The control unit 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Various processing programs are stored in the ROM, and the CPU reads the various programs stored in the ROM, expands them in the RAM, and controls the operation of each unit of the image forming apparatus 100 according to the expanded programs.

  A main body memory 11 is connected to the control unit 10. The main body memory 11 is configured by a nonvolatile memory or the like, and has a unit management information area 111, a parts management information area 112, and a time management information area 113 as shown in FIG.

FIG. 2 shows an example of data storage in the unit management information area 111.
Here, as shown in FIG. 1, the printer unit 50 of the image forming apparatus 100 includes replaceable units U <b> 1 to Un on which a plurality of replaceable components are mounted. The number of units provided in the printer unit 50 may be one or plural, and is not particularly limited. As shown in FIG. 2, the unit management information area 111 includes a serial number D1, a unit counter D2, a unit replacement count D3, and a unit life count value D4 for each unit U1 to Un mounted in the printer unit 50. Stores unit management information.

  The serial number D1 is individual identification information for identifying an individual unit. The unit counter D2 is a value representing the number of times the unit is used as the number of prints (print count value). In the case of double-sided printing, it is a value obtained by counting one side as one print. The unit replacement number D3 is a value indicating the number of unit replacements (number of times of attachment / detachment). The unit life count value D4 represents the life time of the unit as a print count value.

FIG. 3 shows an example of data storage in the parts management information area 112.
As shown in FIG. 3, in the parts management information area 112, for each of the units U1 to Un, the part IDD10, the total number of replacements D11, the part life count value D12, the part cost D13, Stores component management information such as component replacement count D14 and component counter D15.

  The total number of replacements D11 is the number of times that the part has been replaced since the image forming apparatus 100 was installed until now. The component life count value D12 is a print count value indicating the lifetime of the component. The number of parts replacement D14 is the number of times the part has been replaced in the currently used unit. The component counter D15 is a value that represents the number of times the currently used component is used as the number of prints (print count value).

Note that the component life count value D12 and the component cost D13 of each component may be managed by the host device 200 or the like connected via a communication network.
The main body memory 11 stores in advance the life reference values of the components mounted on the units U1 to Un (not shown). The life reference value is a print count value indicating the life time of each part predetermined by the manufacturer.

FIG. 4 shows an example of data storage in the time management information area 113. The time management information area 113 includes a time management memory shown in FIG. 4A and a component management memory shown in FIG.
As shown in FIG. 4A, information (time) is acquired and stored in the time management memory according to the unit replacement method. The unit replacement method will be described in detail later. For example, when switching to the replacement mode and replacing the unit, the “start time” and “end time” of the replacement mode are acquired and stored. Further, for example, when the image forming apparatus 100 is temporarily turned off and the unit is replaced, “OFF time” when the power is turned off and “ON time” when the power is turned on are acquired and stored. Further, for example, when replacing a unit by performing unit attachment / detachment determination, the “detach time” when the unit is removed and the “attach time” when the unit is attached are acquired and stored.
As shown in FIG. 4B, the parts management memory includes “replacement start time” at which unit replacement is started, “replacement end time” at which unit replacement is completed, “replacement start time”, and “replacement end time”. The “replacement time” and “replacement time” calculated by subtracting “” are stored for each part so that a limit is set in advance so that the value does not become larger than necessary.

The operation unit 20 includes a key input unit 21, a display unit 22, and the like. FIG. 5 shows an example of the operation unit 20.
As shown in FIG. 5, the key input unit 21 includes various operation keys such as a numeric keypad 211, a start key 212, a mode key 213, and a power key for switching power ON / OFF. When the operation key is pressed by the user, an operation signal corresponding to the operation key is generated and output to the control unit 10.
The display unit 22 is configured by an LCD (Liquid Crystal Display) or the like, and displays various operation screens, image status display, operation status of each function, and the like in accordance with display signal instructions input from the control unit 10.

  The scanner unit 30 includes a platen glass, a CCD (Charge Coupled Device), and a light source. The reflected light of the light scanned from the light source to the original is imaged by the CCD and set at a predetermined position by photoelectric conversion. The read original image is read as R, G, and B signals, and the read analog image signal is converted into R, G, and B image data and output to the control unit 10.

  The communication unit 40 is an interface connectable to a transmission medium connected to a communication network such as a LAN (Local Area Network) or a WAN (Wide Area Network). The communication unit 40 is constituted by a communication control card such as a LAN card, for example, and various data is exchanged with an external device such as a host device 200 for image data transmission connected to a communication network via a communication line such as a LAN cable. Send and receive. The host device 200 is a computer including a control unit including a CPU, an operation unit, a display unit, a storage unit, and a communication unit.

  The printer unit 50 replaces a unit U1 that is a paper feed unit, a unit U2 that is a development unit, a unit U3 that is a drum unit, a unit U4 that is an intermediate transfer unit, a unit U5 that is a fixing unit, a unit U6 that is an exposure unit, and the like. It has possible units U1 to Un and performs image formation (printing) on paper by an electrophotographic process. That is, the printer unit 50 exposes and scans the photosensitive drum of the unit U3 with a laser beam emitted from the unit U6 based on the image data input from the control unit 10 to form an electrostatic latent image. Next, in the unit U2, the developer is adsorbed on the photosensitive drum to form a toner image. The toner image formed on the photosensitive drum is transferred to the primary transfer roller of the unit U4, and then transferred to the paper conveyed by the paper supply roller of the unit U1. The toner image transferred to the paper is thermally fixed by the fixing roller of the fixing unit U5.

  The units U1 to Un of the printer unit 50 have components that are consumed by printing on paper. For example, the parts included in the unit U1 include a paper feed roller that conveys paper, and a paper feed clutch that transmits power from a drive source (not shown) to the paper feed roller. These consumable parts can be replaced. When the value of the component counter D15 reaches the value of the component life count value D12, the unit on which the component is mounted is pulled out by the user and a new component is mounted. Replaced with a new unit. Alternatively, after replacing the part, the unit is mounted again.

  Note that the printer unit 50 exemplifies a configuration in which an image is formed on a sheet by an electrophotographic process. For example, in the case of an ink jet system, an ink tank, an ink nozzle, or the like is a maintenance target unit or component.

In the present embodiment, among the units attached to the printer unit 50, the IC tag 70 as a recording medium is attached (for example, the units U1 and U2) and those not attached (for example, the unit) U3).
FIG. 6 shows a data storage example of the IC tag 70. As shown in FIG. 6, the IC tag 70 has a unit management information area 701 and a parts management information area 702.

  The unit management information area 701 stores unit management information such as the serial number T1, unit counter T2, and unit replacement count T3. The serial number T1, the unit counter T2, and the unit replacement count T3 are data in the same format as the serial number D1, the unit counter D2, and the unit replacement count D3 stored in the main body memory 11, respectively.

The component management information area 702 stores component management information such as a component IDT10, a replacement flag T11, a pre-replacement count value T12, a component replacement count T14, and a component counter T15 for each component mounted on the unit.
The exchange flag T11 is information indicating whether or not exchange is necessary. “10” indicates that replacement is necessary, and “01” indicates that replacement has been completed. When the unit including the replaced part “01” is mounted on the image forming apparatus 100 and the use in the image forming apparatus 100 is started, the replacement flag T11 is changed from “01” to “00” in the initial state. Is done.
The pre-replacement count value T12 is the value of the component counter T15 in the old component before replacement. The parts management information of these IC tags 70 is updated by a PC (personal computer) and a reader / writer on which a dedicated application is mounted when parts are replaced by a service person.
The component IDT10, the component replacement count T14, and the component counter T15 are data in the same format as the component IDD10, the component replacement count D14, and the component counter D15 stored in the main body memory 11, respectively.

  Returning to FIG. 1, the reader / writer unit 60 includes an IC tag communication control unit 61, antenna drive circuits 621 to 62n, and antennas 631 to 63n. The antenna drive circuits 621 to 62n and the antennas 631 to 63n correspond to the units U1 to Un provided with the IC tag 70, respectively, and the antennas 631 to 63n are provided at positions facing the units U1 to Un, respectively. . The IC tag communication control unit 61 controls the antenna drive circuits 621 to 62n based on an instruction from the control unit 10, electromagnetically induces the IC tags 70 of the units U1 to Un via the antennas 631 to 63n, and performs non-contact communication. Data transmission / reception is performed. Then, data is read from and written to the IC tags 70 of the units U1 to Un. In addition, regarding the unit (for example, unit U3) to which the IC tag 70 is not attached, the antenna drive circuit and the antenna are not provided, and the communication is not performed.

  The power supply unit 80 is connected to a commercial AC power source (not shown), converts AC (AC) power source power input from the commercial AC power source into DC (direct current) power source power, and supplies necessary voltages to the respective units. The power supply unit 80 supplies power in accordance with a control command from the control unit 10.

Next, the operation in this embodiment will be described.
In the image forming apparatus 100, the component counter D <b> 15 of each component in the main body memory 11 is incremented by 1 each time the printer unit 50 performs printing for one side. When a series of prints (jobs) is completed in the printer unit 50, the component life count value D12 of each component stored in the component management information area 112 and the component counter D15 are compared by the control unit 10, and a component that has reached the end of its life is determined. It is determined whether or not there is. When there is a component with a component counter D15 ≧ component life count value D12, that is, a component that has reached the end of its life, a component replacement notification screen (not shown) is displayed on the display unit 22. The part replacement notification screen displays a part name to be replaced, that is, a part name that has reached the end of its life, and a message that prompts replacement of the unit on which the part to be replaced is mounted.

Information on the IC tags 70 of the respective units U1 to Un is updated based on the information stored in the main body memory 11 when the above-mentioned parts have reached the end of their life, when the power is turned off by operating the power key, or when the power save mode is entered. Is done. The reason for updating at the time of the end of the life of the part, at the time of turning off the power, or in the power saving mode is that there is a possibility that the parts U1 to Un are removed and the parts and the units U1 to Un are exchanged.
Hereinafter, the unit replacement process will be described with reference to FIGS.

FIG. 7 is a flowchart illustrating an example of unit replacement processing (replacement in the replacement mode) performed in the image forming apparatus 100 according to the present embodiment. In the present embodiment, as a basic operation of unit replacement, when the unit reaches the end of its life, a component replacement notification screen is displayed on the display unit 22 to prompt the user to shift to the replacement mode.
As shown in FIG. 7, in step S101, a unit replacement screen for notifying that the unit has reached the replacement time is displayed on the display unit 22 (see FIG. 5). Based on the unit replacement screen displayed on the display unit 22, the user selects the transition to the replacement mode by pressing the mode key 213.
When the user selects to switch to the exchange mode, the exchange mode is started in step S102. When the exchange mode is started, the “start time” of the exchange mode is stored in the time management memory of the time management information area 113.
In step S103, the replacement operation of the unit that has reached the replacement time is performed.
When the unit replacement operation is completed, in step S104, the counter provided in the unit is reset. The counter may be reset automatically or manually by the user.
In step S105, various adjustment operations are performed. The necessity for the adjustment work is determined in advance for each part, and the necessity for the adjustment work is determined at the timing when the unit to be replaced is selected in step S103. When the replacement work of a unit that requires adjustment work is performed, the adjustment work corresponding to the unit is performed. The adjustment work is started when the user presses the mode key 213 to select the adjustment mode. On the other hand, when a unit replacement operation that does not require adjustment work is performed, step S105 is skipped and the process proceeds to next step S106.
In step S106, the exchange mode is terminated. When the exchange mode is ended, the “end time” of the exchange mode is stored in the time management memory of the time management information area 113.

FIG. 8 is a flowchart illustrating an example of unit replacement processing (replacement when the power is turned off) performed in the image forming apparatus 100 according to the present embodiment. In the present embodiment, the time measurement is performed when the unit cannot be replaced using the replacement mode as shown in FIG. The starting point of is unknown and causes problems. Further, when replacing a unit, it is usually necessary to cut off the power supply to the unit. For this reason, there is a method of replacing the unit by turning off the power when replacing the unit.
As shown in FIG. 8, in step S201, the user presses the power key to turn off the power. When the power is turned off, the time when the power is turned off is stored in the time management memory of the time management information area 113 as “OFF time”.
In step S202, a replacement operation for a unit to be replaced is performed.
When the unit replacement operation is completed, in step S203, the user presses the power key to turn on the power. The time when the power is turned on is stored in the time management memory of the time management information area 113 as “ON time”.
When the power is turned on and the user manually selects the transition to the reset mode, the reset mode is started in step S204. When the reset mode is started, the “start time” of the reset mode is stored in the time management memory of the time management information area 113.
In step S205, the counter provided in the unit replaced in step S202 is reset. The counter is reset by a user's manual operation in the reset mode.
In step S206, various adjustment operations are performed. The necessity for the adjustment work is determined in advance for each component, and the necessity for the adjustment work is determined at the timing when the reset target unit is selected in step S205. When the replacement work of a unit that requires adjustment work is performed, the adjustment work corresponding to the unit is performed. The adjustment work is started when the user presses the mode key 213 to select the adjustment mode. On the other hand, when a unit replacement operation that does not require adjustment work is performed, step S205 is skipped and the process proceeds to the next step S206.
In step S207, the reset mode is terminated. When the reset mode ends, the “end time” of the reset mode is stored in the time management memory of the time management information area 113.

FIG. 9 is a flowchart illustrating an example of unit replacement processing (replacement based on unit attachment / detachment determination) performed in the image forming apparatus 100 according to the present embodiment. In this embodiment, there is a unit to which the IC tag 70 is attached (for example, the units U1 and U2), and the unit attachment / detachment determination is performed based on the individual ID (component IDT10) of the unit stored in the IC tag 70. There is a method for determining whether or not there is a replacement.
As shown in FIG. 9, in step S301, a unit to be replaced is removed. When the unit is removed, the time at which the removal is performed is stored in the time management memory of the time management information area 113 as the “removal time”.
In step S302, a unit replacement operation is performed, and the unit installation operation is performed. When the unit is mounted, the time when the unit is mounted is stored in the time management memory of the time management information area 113 as “mounting time”.
In step S303, it is determined whether there is a replaced part in the unit mounted in step S302. This determination is made based on the component IDT10 of the mounted unit. If there is a replaced part, the process proceeds to the next step S304. If there is no replaced part, the unit replacement process is terminated.
In step S304, the reset mode is started. When the reset mode is started, the “start time” of the reset mode is stored in the time management memory of the time management information area 113.
In step S305, the counter provided in the unit mounted in step S302 is reset. Note that the counter is automatically reset when entering the reset mode.
In step S306, various adjustment operations are performed. The necessity for the adjustment work is determined in advance for each component, and the necessity for the adjustment work is determined at the timing when the reset target unit is selected in step S305. When the replacement work of a unit that requires adjustment work is performed, the adjustment work corresponding to the unit is performed. The adjustment work is started when the user presses the mode key 213 to select the adjustment mode. On the other hand, when a unit replacement operation that does not require adjustment work is performed, step S306 is skipped and the process proceeds to next step S307.
In step S307, the reset mode is terminated. When the reset mode ends, the “end time” of the reset mode is stored in the time management memory of the time management information area 113.

Hereinafter, the time measurement process will be described with reference to FIGS.
FIG. 10 is a flowchart illustrating an example of time measurement processing (exchange in the exchange mode) performed in the image forming apparatus 100 according to the present embodiment.
When the exchange mode is selected by the user and the exchange mode is started, as shown in FIG. 10, in step S401, the time when the exchange mode is started is acquired as the “exchange start time”. The acquired “replacement start time” is stored in the component management memory in the time management information area 113.
When the replacement mode is ended, in step S402, the time when the replacement mode is ended is stored in the component management memory of the time management information area 113 as the “replacement end time”.
In step S403, the “exchange time” is calculated from the “exchange start time” stored in step S401 and the “exchange end time” stored in step S402.
In step S404, it is determined whether or not the “limit exchange time” set in advance exceeds the “exchange time” calculated in step S403. If the “limit exchange time” has exceeded, the process proceeds to the next step S405, and if the “limit exchange time” has not exceeded, the process proceeds to step S406.
In step S405, the “replacement time” calculated in step S403 is stored in the component management memory in the time management information area 113.
In step S406, a preset “limit replacement time” is stored in the component management memory of the time management information area 113 as “replacement time”.

FIG. 11 is a flowchart illustrating an example of time measurement processing (exchanged when the power is turned off) performed in the image forming apparatus 100 according to the present embodiment.
When the power is turned off by the user, as shown in FIG. 11, in step S501, the time when the power is turned off is acquired as the “replacement start time”. The acquired “replacement start time” is stored in the component management memory in the time management information area 113.
When the reset mode is finished, in step S502, the time when the reset mode is finished is stored in the component management memory of the time management information area 113 as the “replacement end time”.
In step S503, “exchange time” is calculated from the “exchange start time” stored in step S501 and the “exchange end time” stored in step S502.
In step S504, it is determined whether or not the “limit replacement time” set in advance exceeds the “replacement time” calculated in step S503. If the “limit exchange time” has exceeded, the process proceeds to the next step S505, and if the “limit exchange time” has not exceeded, the process proceeds to step S506.
In step S505, the “replacement time” calculated in step S503 is stored in the component management memory in the time management information area 113.
In step S506, the preset “limit replacement time” is stored in the component management memory of the time management information area 113 as “replacement time”.

FIG. 12 is a flowchart illustrating an example of time measurement processing (replacement based on unit attachment determination) performed in the image forming apparatus 100 according to the present embodiment.
When the user removes the unit, as shown in FIG. 12, in step S601, the time at which the unit was removed is acquired as the “replacement start time”. The acquired “replacement start time” is stored in the component management memory in the time management information area 113.
When the reset mode is finished, in step S602, the time when the reset mode is finished is stored in the component management memory of the time management information area 113 as the “replacement end time”.
In step S603, the “exchange time” is calculated from the “exchange start time” stored in step S601 and the “exchange end time” stored in step S602.
In step S604, it is determined whether or not the “limit exchange time” set in advance exceeds the “exchange time” calculated in step S603. If the “limit exchange time” has exceeded, the process proceeds to the next step S605, and if the “limit exchange time” has not exceeded, the process proceeds to step S606.
In step S605, the “replacement time” calculated in step S603 is stored in the component management memory in the time management information area 113.
In step S606, the preset “limit replacement time” is stored in the component management memory of the time management information area 113 as “replacement time”.

  In this way, by obtaining the replacement start time and replacement end time according to the unit replacement method and calculating the replacement time, it is possible to accurately measure the replacement time and manage the replacement time for each unit. Can be done.

  As mentioned above, although concretely demonstrated based on embodiment which concerns on this invention, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.

  For example, in the above embodiment, when the adjustment work is required after the unit replacement, the replacement time is measured by the time including the adjustment work. However, the replacement time is measured excluding the adjustment work. Also good.

  Further, for example, in the above embodiment, the “replacement time” stored in the component management memory in the time management information area 113 is one for each component, but information for the number of replacements is stored for each component. Also good.

  In addition, the detailed configuration and detailed operation of each apparatus constituting the image forming apparatus 100 can be changed as appropriate without departing from the spirit of the present invention.

FIG. 2 is a block diagram illustrating an example of a functional configuration of an image forming apparatus 100 according to the present embodiment. 6 is a diagram showing an example of data storage in a unit management information area 111. FIG. 6 is a diagram showing an example of data storage in a component management information area 112. FIG. 6 is a diagram showing an example of data storage in a time management information area 113. FIG. 3 is a diagram illustrating an example of an operation unit 20. FIG. It is the figure shown about the data storage example of IC tag 70. FIG. 6 is a flowchart illustrating an example of unit replacement processing (replacement in an exchange mode) performed in the image forming apparatus 100 according to the present embodiment. 5 is a flowchart illustrating an example of unit replacement processing (replacement when power is turned off) performed in the image forming apparatus 100 according to the present embodiment. 5 is a flowchart illustrating an example of unit replacement processing (replacement based on unit attachment determination) performed in the image forming apparatus 100 according to the present embodiment. 6 is a flowchart illustrating an example of time measurement processing (exchange in exchange mode) performed in the image forming apparatus 100 according to the present embodiment. 5 is a flowchart illustrating an example of time measurement processing (exchanged when the power is turned off) performed in the image forming apparatus 100 according to the present embodiment. 5 is a flowchart illustrating an example of time measurement processing (replacement by unit attachment determination) performed in the image forming apparatus 100 according to the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Image forming apparatus 10 Control part 11 Main body memory 111 Unit management information area 112 Parts management information area 113 Time management information area 20 Operation part 21 Key input part 211 Numeric keypad 212 Start key 213 Mode key 22 Display part 30 Scanner part 40 Communication part 50 Printer unit 60 Reader / writer unit 70 IC tag 80 Power supply unit

Claims (5)

A detachable unit with a plurality of replaceable parts,
Storage means for storing the replacement start time and replacement end time of the unit;
Calculating means for calculating a time required for exchange from the exchange start time and the exchange end time stored in the storage means;
A setting means for newly setting the set time as the time required for the exchange when the calculated time exceeds a preset time;
An image forming apparatus comprising: When replacing the unit using the replacement mode,
The image forming apparatus according to claim 1, wherein the storage unit stores a time when the mode is changed to the exchange mode as the exchange start time, and stores a time when the exchange mode is ended as the exchange end time. . When replacing the unit with the power off,
The said storage means memorize | stores the time when the said power supply was turned off as the said exchange start time, and memorize | stores the time when the reset mode was complete | finished as the said exchange end time. Image forming apparatus. Unit attachment / detachment detecting means for detecting attachment / detachment of the unit;
A component replacement presence / absence determining means for determining whether or not there is a replaced part among the parts mounted on the unit when the attachment / detachment of the unit is detected by the unit attachment / detachment detection means;
When it is determined by the part replacement presence / absence determination means that there is a replaced part,
4. The storage device according to claim 1, wherein the storage unit stores a time when the unit is removed as the replacement start time, and stores a time when the reset mode is ended as the replacement end time. The image forming apparatus described in the item. In a computer of an image forming apparatus provided with a detachable unit on which a plurality of replaceable parts are mounted,
A function of storing the replacement start time and replacement end time of the unit;
A function for calculating a time required for the exchange from the exchange start time and the exchange end time;
A function to newly set the set time as the time required for the exchange when the calculated time exceeds a preset time;
A program to realize

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