JP2009029587A - Staple cartridge, image forming device, and method for notifying shortage of staple - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a staple cartridge, capable of properly preventing the interruption of printing process caused by the shortage of staples, an image forming device, and a method for notifying shortage of staples. <P>SOLUTION: The staple cartridge usable in the image forming device comprises a storage means recording a residual quantity of staples. The residual quantity of the staples recorded in the storage means is updated according to the consumption of the staples. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a staple cartridge, an image forming apparatus, and a staple shortage notification method.

  2. Description of the Related Art In recent years, image forming apparatuses such as copiers and multi-function machines are becoming more commonly provided with so-called post-processing functions such as a sort function, a folding function, a punch function, or a staple function. Among the post-processing functions, the staple function has a different aspect from other post-processing functions in that the staple (needle) is used. That is, the staple is a consumable item and may be insufficient during printing.

Conventionally, when the staple is insufficient during printing (when it is used up), the printing process or the post-processing is interrupted, or the sheet is discharged without executing the stapling function (for example, Patent Document 1). ).
Japanese Patent Laid-Open No. 2005-035107

  However, it is for the user that the printing process or the post-processing is interrupted in the middle because the stapling function as the post-processing cannot be executed even though the printing that is an original function of the image forming apparatus is executable. Inconvenient.

  In addition, it is not preferable that the paper is discharged without executing the stapling function because a result different from that intended by the user is obtained.

  SUMMARY An advantage of some aspects of the invention is that it provides a staple cartridge, an image forming apparatus, and a staple shortage notification method that can appropriately prevent interruption of print processing due to lack of staples. .

  Accordingly, in order to solve the above-described problems, the present invention provides a staple cartridge used in an image forming apparatus, which has a storage unit in which the remaining amount of staples is recorded, and records in the storage unit according to staple consumption. The remaining amount of staples being updated is updated.

  According to another aspect of the present invention, there is provided an image forming apparatus that uses the staple cartridge described above, and a remaining amount acquisition unit that acquires a remaining amount of staples recorded in the storage unit of the staple cartridge currently used; A determination result obtained by the determination unit; a required amount calculation unit that calculates a required amount of staples according to a print instruction; and a determination unit that determines a shortage of staples by comparing the remaining amount with the required amount. And a notification means for notifying the shortage of staples.

  The present invention is also an image forming apparatus that uses staple cartridges, and is currently used with a staple remaining amount storage unit that records the remaining amount of staples according to identification information for identifying each staple cartridge. A remaining amount acquisition unit that acquires the identification information recorded in the staple cartridge and acquires the remaining amount of the staple cartridge that is currently used based on the acquired identification information and the remaining staple amount storage unit; A determination result of the determination unit; a required amount calculation unit that calculates a necessary amount of staples according to a print instruction; and a determination unit that determines a shortage of staples by comparing the remaining amount and the required amount. And a notification means for notifying the shortage of staples.

The present invention also provides a staple cartridge used in the image forming apparatus,
A measuring means for measuring a physical quantity that changes according to the consumption of staples or a change quantity of the physical quantity;
And a notifying unit for notifying the image forming apparatus of a measurement value obtained by the measuring unit.

  According to another aspect of the present invention, there is provided an image forming apparatus using the staple cartridge described above, wherein the recording unit records the staple consumption amount and the measurement value notified from the staple cartridge according to staple consumption, Based on the history of the recorded staple consumption and the measured value, a relationship deriving unit for deriving the relationship between the staple consumption and the measured value, and calculating the required amount of staples according to the print instruction A required amount calculating means for performing, a remaining amount estimating means for estimating a remaining amount of staples in the staple cartridge based on the measured value when a printing instruction is given, and the relationship between the consumed amount and the measured value; A determination unit that determines a shortage of staples by comparing the required amount with the estimated remaining amount, and according to a determination result of the determination unit, the determination unit And having a notification means for notifying a shortage of tables.

  According to the present invention, it is possible to provide a staple cartridge, an image forming apparatus, and a staple shortage notification method that can appropriately prevent interruption of print processing due to a shortage of staples.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external view of an example of a multifunction machine according to an embodiment of the present invention. In FIG. 1, the multifunction device 1 is an example of an image forming apparatus, and includes a main body unit 100, an imaging unit 121, an automatic document feeder 122, paper feeding units 123 a, 123 b, and 123 c (hereinafter collectively referred to as “ A paper feed unit 123 ”, paper discharge units 124 a and 124 b (hereinafter collectively referred to as“ paper discharge unit 124 ”), a post-processing unit 125, and the like.

  The main body 100 stores a control unit of the multifunction machine 1 and the like. The imaging unit 121 includes a scanner or the like, and reads an image from a document. The automatic document feeder 122 has a mechanism for causing the imaging unit 121 to automatically and continuously read a document. The paper feeding unit 123 is configured by a paper feeding tray or the like, and stores printing paper. The paper discharge unit 124 includes a paper discharge tray and the like, and discharges printed paper. The post-processing unit 125 performs post-processing such as stapling, punching, folding, and sorting.

  FIG. 2 is a diagram illustrating a configuration example of a control unit and a post-processing unit of the multifunction machine according to the first embodiment. In FIG. 2, the same parts as those of FIG.

  In FIG. 2, the control unit 110 includes a CPU 111, an auxiliary storage device 112, a memory device 113, a network interface 114, a communication device 115, a post-processing input / output unit 116, and the like that are mutually connected by a bus B. The

  The auxiliary storage device 112 stores an installed program, image data read by the imaging unit 121, and the like. The memory device 113 reads the program from the auxiliary storage device 112 and stores it when there is an instruction to start the program. The CPU 111 executes functions related to the multifunction machine 1 in accordance with a program stored in the memory device 113. The network interface 114 controls communication via a network such as a LAN (Local Area Network). The communication device 115 controls FAX communication. The post-processing input / output unit 116 controls communication with the post-processing unit 125.

  In FIG. 2, the printing unit 126 and the operation unit 127 that are not illustrated in FIG. 1 are illustrated. The printing unit 126 includes a photosensitive drum, a transfer belt, and the like, and transfers an image to printing paper. The operation unit 127 is a so-called operation panel, and includes various buttons (keys) for receiving input of operation instructions, an LCD (Liquid Crystal Display) for receiving information display and operation instructions, and the like. .

  On the other hand, the staple cartridge 200 is attached to the post-processing device 125. Staple processing is realized by staples (needles) stored in the staple cartridge. 2, the staple cartridge 200 includes an information storage unit 201, an information communication unit 202, and the like. In the information storage unit 201, the remaining amount of staples in the staple cartridge 200 is recorded. When the staple cartridge 200 is shipped, the remaining amount of staples stored at that time is recorded. The information communication unit 202 implements wired or wireless communication with the post-processing input / output unit 116, thereby providing the post-processing input / output unit 116 with an access path to the remaining staple amount recorded in the information storage unit 201. provide. The information storage unit 201 and the information communication unit 202 may be integrally configured by RFID (Radio Frequency Identification) or the like.

  FIG. 3 is a configuration diagram of the staple cartridge according to the first embodiment. In FIG. 3, the same parts as those of FIG. In FIG. 3, the staple cartridge 200 includes a staple stack 203, a pressure plate 204, a spring 205, a staple push-out unit 206, a staple ejection unit 207, and the like.

  The staple stack 203 is configured by stacking a set of plate-like staples (corresponding to one layer in the figure) configured by arranging linear staples (needles) in a plane. In the drawing, the longitudinal direction of each staple is perpendicular to the drawing. The pressure plate 205 is a member on the plate for pressing the staple stack 203 from above by the elasticity of the spring 205. The spring 205 is disposed between the pressure plate 205 and the ceiling portion of the staple cartridge 200, and applies a load for pressing the staple stack 203 downward in the drawing with respect to the pressure plate 205. Instead of the spring 205, an elastic body that applies the same force as the spring 205 may be used. The staple push-out unit 206 is a member for pushing out (feeding out) the staples in the lowermost layer one by one in the direction of the arrow. The extruded staple is ejected from the staple ejection unit 207.

  The staple push-out unit 206 moves in the arrow direction (left direction) by the amount of the ejected staple width. When all the staples for one layer have been ejected, the staple pusher 206 moves to the right end. Accordingly, the staple stack 203 is pressed downward by the pressure plate 204, and is lowered by one layer, and the new lowermost layer becomes an injection target. That is, the pressure plate 204 is lowered as the staple is consumed.

  FIG. 4 is a diagram for describing a functional configuration example of the multifunction peripheral according to the first embodiment. In FIG. 4, the multifunction device 1 includes a print processing control unit 11, a necessary amount calculation unit 12, a remaining amount determination unit 13, a deficiency determination unit 14, a deficiency notification unit 15, a remaining amount update unit 16, and the like. Each of these units is software realized by processing a program by the CPU 111.

  The print processing control unit 11 controls the overall print processing that is executed in response to a print instruction, a copy instruction, or the like (hereinafter referred to as “print instruction”). The required amount calculation unit 12 calculates the number of staples (hereinafter referred to as “staple required amount”) required (consumed) in the staple processing corresponding to the print instruction based on the contents of the print instruction or the like. To do. The remaining amount determination unit 13 determines the remaining amount of staples (hereinafter referred to as “staple remaining amount”) when a print instruction is received. In the first embodiment, the remaining amount determination unit 13 acquires the remaining amount of the table from the information storage unit 201 of the staple cartridge 200. The shortage determination unit 14 determines whether there is a possibility of shortage of staples before executing printing by comparing the required staple amount and the remaining amount of staples. The shortage notifying unit 15 controls processing for notifying the user to that effect when the shortage determining unit 14 determines that there is a possibility of shortage of staples. The remaining amount updating unit 16 updates the value of the remaining amount of staples in the information storage unit 201 of the staple cartridge 200 according to staple consumption.

  Hereinafter, a processing procedure of the multifunction machine 1 will be described. FIG. 5 is a flowchart for explaining the processing procedure of the multifunction machine according to the first embodiment. The processing in FIG. 5 is instructed to print image data read by the imaging unit 121, image data stored in the auxiliary storage device 112, or image data received via a network. In the case where execution of the process is designated, it is executed before printing is started or before paper discharge is started at the latest.

  In step S101, the remaining amount determination unit 13 determines the remaining amount of staples. In the first embodiment, the staple remaining amount recorded in the information storage unit 201 of the staple cartridge 200 is acquired. Subsequently, the required amount calculation unit 12 calculates the required staple amount based on the content of the print instruction (S102). For example, the necessary amount of staples is calculated based on parameters specified in the print instruction, such as the number of copies to be stapled and the location to be stapled.

  Subsequently, the shortage determination unit 14 determines whether or not there is a shortage of staples in the staple processing for the current print instruction by comparing the necessary staple amount and the remaining staple amount (S103). If the required amount of staples exceeds the remaining amount of staples, it is determined that the staples are insufficient (Yes in S103), and the shortage notifying unit 15 notifies that there is a possibility that the staples will be short (S104). For example, when a print instruction is input via the operation unit 127, the notification (shortage notification) causes the operation unit 127 to display a screen for notifying stapling (hereinafter, referred to as a “shortage notification screen”). Is done. Further, when a print instruction is input from a PC (Personal Computer) or the like connected via a network, the shortage notification screen is displayed on the PC. By the shortage notification, the user can recognize in advance the shortage of staples before the printing process is started or before the paper discharge is started.

  When the user replenishes staples by replacing the staple cartridge 200 or the like in response to the shortage notification (Yes in S105), the print processing control unit 11 sends the printing (transfer of the image to the printing paper) to the printing unit 126. Execute (S107).

  On the other hand, when the user does not replenish staples in response to the shortage notification, for example, when it is input via a button or the like on the shortage notification screen that no staple replenishment is performed (No in S105), the marking processing control unit 11 inputs a correspondence instruction (S106). The input of the correspondence instruction corresponds to, for example, a change in printing conditions (change in the number of copies, a change in a stapling location, or a cancellation of stapling processing), an instruction to cancel printing, or the like. When a response instruction is input, the print processing control unit 11 causes the printing unit 126 to execute printing (S107) except when an instruction to stop printing is issued. When the printing conditions are changed in the input of the correspondence instruction, the shortage of staples may be determined by repeating step S102 and subsequent steps again.

  Subsequent to step S107, the print processing control unit 11 determines whether or not the staple processing cancellation (skip) is designated in the handling instruction (S108). If cancellation of stapling is not specified, or if stapling is not insufficient (No in S108), the print processing control unit 11 causes the post-processing device 125 to execute stapling (S109). Subsequently, the remaining amount update unit 16 updates the remaining staple amount (S110). In the first embodiment, a new staple remaining amount is calculated by subtracting the number of staples consumed in step S109 (staple consumption amount) from the staple remaining amount acquired in step S101, and the calculated staple amount is calculated. The remaining amount is written in the information storage unit 201 of the staple cartridge 200. The staple consumption amount may be obtained by acquiring the actual number of staple ejections from the post-processing device 125, or the staple required amount calculated in step S102 may be used as the staple consumption amount. .

  On the other hand, when the cancellation of stapling is specified in the handling instruction (Yes in S108), the print processing control unit 11 skips the execution of the stapling process.

  Subsequent to Yes in step S110 or step S108, the print processing control unit 11 causes the paper discharge unit 124 to discharge the printed paper (S111). At this time, when the stapling process is executed, the paper subjected to the stapling process is discharged.

  As described above, according to the first embodiment, when it is predicted that the number of staples will be insufficient, it is possible to notify the user in advance, and alternative processing means such as replenishment of staples and change of printing conditions are provided in advance. Can be selected. This can prevent the printing process from being interrupted due to a shortage of staples. When staples are replenished in response to a staple shortage notification, the print result can be output in the format that the user originally expected. Even when staples are not replenished, the user can output the print result in a format that the user is satisfied by giving an opportunity to select an alternative means.

  Since the multifunction peripheral 1 automatically determines the remaining amount of staples, the user does not have to manually input the staple supply amount when the staple cartridge is replaced or when staples are supplied.

  Further, since the remaining amount of staples is recorded in the storage unit of the staple cartridge 200, even when the staple cartridge 200 that has been used and removed halfway is mounted again, the remaining staples of the mounted staple cartridge 200 are retained. The amount is accurately grasped.

  Next, a second embodiment will be described. In the second embodiment, differences from the first embodiment will be described. Accordingly, the points not particularly mentioned may be the same as those in the first embodiment.

  FIG. 6 is a diagram for explaining a functional configuration example of the multifunction peripheral according to the second embodiment. In FIG. 6, the same parts as those in FIG. As shown in FIG. 6, in the second embodiment, the remaining amount management table 17 is a new component.

  FIG. 7 is a diagram illustrating a configuration example of the remaining amount management table. As shown in FIG. 7, the remaining amount management table 17 is a table for managing the cartridge ID and the remaining staple amount for each mounted staple cartridge 200, and is recorded in the auxiliary storage device 112, for example. The cartridge ID is a unique ID for each staple cartridge 200. In other words, in the second embodiment, the remaining amount of staples is managed in the multifunction device 1. In the second embodiment, the information storage unit 201 of each staple cartridge 200 records the cartridge ID of the staple cartridge 200 and the remaining staple amount (remaining amount when new (full)). .

  The processing procedure of the multifunction machine 1 according to the second embodiment will be described below. The main flow of the processing procedure is as shown in FIG. However, in the second embodiment, the staple remaining amount determination process in step S101 is different from the staple remaining amount update process in step S110.

  FIG. 8 is a flowchart for explaining the staple remaining amount determination process according to the second embodiment.

  In step S <b> 201, the remaining amount determination unit 13 reads the cartridge ID from the information storage unit 201 of the staple cartridge 200. Subsequently, the remaining amount determination unit 13 determines whether or not a record relating to the read cartridge ID exists in the remaining amount management table 17 (whether or not it is a managed ID) (S202). If the record exists (Yes in S202), the remaining amount determination unit 13 reads the remaining staple amount recorded in the record, and the read remaining staple amount is stored in the currently installed staple cartridge 200. The remaining staple amount is determined (S203).

  On the other hand, when the record does not exist (No in S202), the remaining amount determination unit 13 sets the cartridge ID read in Step S201 to a new record (hereinafter referred to as “new record”) in the remaining amount management table 17. Record (S204). Subsequently, the remaining amount determination unit 13 acquires the remaining staple amount from the information storage unit 201 of the staple cartridge 200 and records it in a new record (S205). In this case, the acquired remaining staple amount is determined as the remaining staple amount of the currently installed staple cartridge 200.

  Subsequently, FIG. 9 is a flowchart for explaining the staple remaining amount update process in the second embodiment.

  In step S251, the remaining amount update unit 16 uses the value obtained by subtracting the staple consumption from the original remaining amount of staples, in the remaining amount management table 17, the staple remaining amount corresponding to the staple ID of the currently installed staple cartridge 200. Update the value.

  As described above, according to the multifunction machine 1 of the second embodiment, the same effect as that of the first embodiment can be obtained.

In the second embodiment, the remaining amount of staples is managed by the remaining amount management table 17, so that the information storage unit 201 of the staple cartridge 200 only needs to record the number of staples when new, Moreover, the structure which cannot write in may be sufficient. Note that the staple cartridges 200 that can be mounted on the multifunction machine 1 are limited, and if the number of staples at the time of all new articles is a fixed value, the number of staples is not recorded in the information storage unit 201 of the staple cartridge 200. May be. This is because the fixed value may be recorded in the remaining amount management table 17 in step S205 in FIG. 8. In addition, for each identification information for identifying the specification of the staple cartridge 200, such as a model number, the number of staples at the time of a new article is determined in advance. The registered table may be recorded in the auxiliary storage device 112 of the multifunction machine 1 and the remaining staple amount of the newly installed staple cartridge 200 may be determined based on the table. In this case, identification information for identifying the specification may be recorded in the information storage unit 201 of the staple cartridge 200. This is because the remaining amount acquisition unit 13 can acquire the identification information and grasp the remaining amount of staples at the time of replacement based on the table.

  Next, a third embodiment will be described. In the third embodiment, differences from the first embodiment will be described. Accordingly, the points not particularly mentioned may be the same as those in the first embodiment.

  FIG. 10 is a diagram illustrating a configuration example of the control unit and the post-processing unit of the multifunction machine according to the third embodiment. In FIG. 10, the same parts as those in FIG.

  As shown in FIG. 10, in the third embodiment, in the staple cartridge 200, the measuring unit 300 is a new component. The measuring unit 300 is used to measure a physical quantity (state of the staple cartridge 200) that changes in accordance with consumption (reduction) of staples in the staple cartridge 200. As will be described later, a part or all of the measuring unit 300 may not be disposed in the staple cartridge 200. In the third embodiment, the information storage unit 201 may not record the remaining amount of staples (including the number of staples when new).

  FIG. 11 is a diagram for describing a functional configuration example of a multifunction peripheral according to the third embodiment. In FIG. 11, the same parts as those of FIG. As shown in FIG. 11, in the third embodiment, the measurement value recording unit 18, the relationship deriving unit 19, the history table 21, and the like are newly configured elements.

  The measurement value recording unit 18 records the staple consumption amount and the measurement value obtained by the measurement unit 300 in the history table 21 according to the staple consumption.

  The relationship deriving unit 19 derives the relationship between the staple consumption amount and the change in the measurement value based on the history of the staple consumption amount and the measurement value recorded in the history table 21.

  The history table 21 is a table in which the staple consumption amount and the measurement value by the measurement unit 300 are recorded each time printing is performed (for example, every time a print job is completed).

  FIG. 12 is a diagram illustrating a configuration example of a history table. Each row (each record) in the history table 21 includes, as items, a staple consumption amount and a measurement value by the measurement unit 300 after the staple consumption (after completion of printing), and the staple is consumed each time printing is performed. Added (recorded) each time. Note that the change amount of the measurement value may be recorded every time.

  The processing procedure of the multifunction machine 1 according to the third embodiment will be described below. The main flow of the processing procedure is as shown in FIG. However, in the third embodiment, the staple remaining amount determination process in step S101 is different from the staple remaining amount update process in step S110.

  FIG. 13 is a flowchart for explaining a staple remaining amount determination process according to the third embodiment.

  First, the relationship deriving unit 19 reads all records (history) of staple consumption and measurement values recorded in the history table 21 (S301, S302). Subsequently, the relationship deriving unit 19 derives the relationship between the staple consumption amount and the change in the measured value based on the read history (S303). The relationship may be, for example, a change amount of the measurement value per staple, or may be a staple consumption amount per predetermined change amount of the measurement value. In any case, it is calculated based on the number of staples consumed in a predetermined period (for example, all periods) in the past history acquired from the history table 21 and the amount of change in the measured value in the predetermined period. That's fine.

  Subsequently, the remaining amount determination unit 13 acquires the current physical quantity measurement value from the measurement unit 300 of the staple cartridge 200 (S304). However, in the history table 21, when the measurement value is recorded as it is, not the change amount of the measurement value, the measurement value of the last (latest) record in the history table 21 is acquired and treated as the current measurement value. Also good.

  Subsequently, the remaining amount determination unit 13 calculates the remaining amount of staples based on the current measurement value and the relationship between the staple consumption amount derived in step S303 and the change in the measurement value (S305). Since the measurement value may include some error, the remaining staple amount calculated here is an estimated value.

  Next, FIG. 14 is a flowchart for explaining a staple remaining amount update process according to the third embodiment.

  In step S351, the remaining amount update unit 16 creates a new record in the history table 21, and records the staple consumption amount of the current print processing in the record. Subsequently, the remaining amount update unit 16 acquires the current physical quantity measurement value from the measurement unit 300 of the staple cartridge 200, and records the acquired value in a newly generated record (S352). Note that, when the change amount of the measurement value is recorded, the difference between the current measurement value and the value acquired in step S304 in FIG. 13 may be calculated, and the calculation result may be recorded.

  When the staple cartridge 200 is replaced, the relationship between the staple consumption amount and the change in the measurement value may be different, so the history table 21 may be cleared (all records are deleted).

  Hereinafter, a specific example of the measurement unit 300 will be described. In the following figures, the same parts as those in FIG.

  FIG. 15 is a diagram illustrating a first example of the measurement unit. FIG. 15 shows an example in which a reflective photosensor 301 is used as the measurement unit 300. The reflection type photosensor 301 is arranged on the side surface of the staple cartridge 200 in a direction in which the height of the staple stack 203 changes according to the consumption of staples (direction in which the pressure plate 204 descends) so that reflection of light by the staples can be detected. They are arranged side by side. The reflective photosensor 301 may be disposed on the staple cartridge 200 or may be disposed on the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, the reflective photosensor 301 in the portion where the spring 205 is located does not detect light reflection, and the reflective photosensor 301 in the portion where the pressure plate 204 or the staple stack 203 is positioned The reflection of light by 203 is detected. When the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the number of sensors that do not detect light reflection increases and the number of sensors that detect light reflection decreases. Therefore, a change in the height of the staple stack 203 can be detected by increasing or decreasing the number of the sensors.

  In this case, the measurement value recording unit 18 uses the number of reflection type photosensors 301 in which reflection is detected or the number of reflection type photosensors 301 in which no reflection is detected (hereinafter referred to as “detection number”) as a measurement value. Record in the history table 21. For example, the relationship deriving unit 19 calculates the amount of change in the number of detections per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the current number of detections and the number of detections when the remaining amount of staples becomes 0 by V. The number of detections when the staple remaining amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  In addition, you may replace with the means of other means, such as an ultrasonic system, instead of the means to detect light.

  Next, FIG. 16 is a diagram illustrating a second example of the measurement unit. FIG. 16 shows an example in which a light emitting element 302a and a light receiving element 302b are used as the measurement unit 300. The light emitting element 302b is disposed on the side surface of the staple cartridge 200, and the light receiving element 302b is disposed on the side surface facing the light emitting element 302a with the staple stack 203 interposed therebetween. In the descending direction). The light emitting element 302a and the light receiving element 302b may be disposed in the staple cartridge 200, or may be disposed in the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, the light receiving element 302b where the spring 205 is located detects light from the light emitting element 302a, and the light receiving element 302b where the pressure plate 204 or the staple stack 203 is located does not receive light from the light emitting element 302a. Do not detect. When the position of the pressure plate 204 is lowered according to the consumption of staples, the number of light receiving elements 302b that detect light increases, and the number of light receiving elements 302b that do not detect light decreases. Therefore, a change in the height of the staple stack 203 can be detected by increasing or decreasing the number of the elements.

  In this case, the measurement value recording unit 18 uses the number of light receiving elements 302b in which light is detected or the number of light receiving elements 302b in which light is not detected (hereinafter referred to as “detection number”) in the history table 21 as measurement values. Record. For example, the relationship deriving unit 19 calculates the amount of change in the number of detections per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the current number of detections and the number of detections when the remaining amount of staples becomes 0 by V. The number of detections when the staple remaining amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  Note that the number of the light emitting elements 302a and the number of the light receiving elements 302b may not be the same. Further, instead of the light emitting element 302a and the light receiving element 302b, a similar mechanism may be constructed by another means, such as using an ultrasonic wave by combining a piezoelectric element or the like.

  Next, FIG. 17 is a diagram illustrating a third example of the measurement unit. FIG. 17 shows an example in which a distance measuring sensor 303 is used as the measuring unit 300. The distance measuring sensor 303 is disposed, for example, on the ceiling portion of the staple cartridge 200 so as to be able to measure an interval whose distance changes according to staple consumption, for example, a distance between the upper surface of the staple cartridge 200 and the upper surface of the pressure plate 204. Is done. The distance measuring sensor 303 may be disposed on the staple cartridge 200 or may be disposed on the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the staple consumption, the distance detected by the distance measuring sensor 303 increases.

  In this case, the measured value recording unit 18 records the distance detected by the distance measuring sensor 303 as a measured value in the history table 21. For example, the relationship deriving unit 19 calculates the amount of change in distance per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining staple amount by dividing the difference between the current distance and the distance when the remaining staple amount becomes 0 by V. The distance when the remaining staple amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  A distance measuring sensor 303 may be provided on the upper surface of the pressure plate 204, and the distance from the upper surface of the pressure plate 204 to the upper surface of the staple cartridge 200 may be measured.

  Next, FIG. 18 is a diagram illustrating a fourth example of the measurement unit. FIG. 18 shows an example in which a pressure plate interlocking member 304 and a rotary encoder 305 are used as the measurement unit 300. The pressure plate interlocking member 304 is a rod-shaped member that is fixed to the pressure plate 204 and moves up and down in conjunction with the pressure plate 204. The rotary encoder 305 is disposed at a position where the movement of the pressure plate interlocking member 304 can be detected. The rotary encoder 305 may be disposed in the staple cartridge 200 or may be disposed in the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the pressure plate interlocking member 304 is also moved in conjunction therewith, and the amount of movement thereof is measured by the rotary encoder 305.

  In this case, the measured value recording unit 18 records the measured movement amount in the history table 21 as a measured value. For example, the relationship deriving unit 19 calculates the movement amount per staple (the calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the total amount of movement until the remaining amount of staples becomes zero and the amount of movement until now by V. The total movement amount may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  Note that the rotary encoder 305 is not necessarily rotary, and may be a linear encoder. A similar function can be realized by attaching a striped pattern or slit to the pressure plate interlocking member 304 and observing the change in the situation.

  Alternatively, the rotary encoder 305 may be fixed to the pressure plate 204 and the pressure plate interlocking member 304 may be fixed to the movement of the pressure plate 204.

  Next, FIG. 19 is a diagram illustrating a fifth example of the measurement unit. FIG. 19 shows an example in which a pressure plate interlocking member 306 and a rotary switch 307 are used as the measurement unit 300. The pressure plate interlocking member 306 is a rod-like member that is fixed to the pressure plate 204 and moves up and down in conjunction with the pressure plate 204. The rotary switch 307 is disposed at a position where the movement of the pressure plate interlocking member 306 can be detected. The rotary switch 307 may be disposed on the staple cartridge 200 or may be disposed on the attachment portion of the staple cartridge 200 on the post-processing device 125 side. The rotary switch 307 has a plurality of electrodes, and the ON / OFF combination of the electrodes changes as the pressure plate interlocking member 306 moves. By the change, the movement amount of the pressure plate interlocking member 306 is measured.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the pressure plate interlocking member 306 is also moved in conjunction therewith, and the amount of movement thereof is measured by the rotary switch 307.

  In this case, the measured value recording unit 18 records the measured movement amount in the history table 21 as a measured value. For example, the relationship deriving unit 19 calculates the movement amount per staple (the calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the total amount of movement until the remaining amount of staples becomes zero and the amount of movement until now by V. The total movement amount may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  Alternatively, the rotary switch 307 may be fixed to the pressure plate 204 and the pressure plate interlocking member 306 may be arranged to be fixed with respect to the movement of the pressure plate 204.

  A slide switch may be used instead of the rotary switch.

  Next, FIG. 20 is a diagram illustrating a sixth example of the measurement unit. FIG. 19 shows an example in which a sliding resistor 308 which is an example of a variable resistor is used as the measurement unit 300. The sliding resistor 308 includes a resistor 308a that is fixed to the pressure plate 204 and moves up and down in conjunction with the pressure plate 204, and a resistance measurement unit 308b that measures the resistance of the resistor 308a. As illustrated, the resistor 308a forms a U shape, and the resistance measurement unit 308b measures a resistance value from one end to the other end of the resistor 308a in contact with the resistance measurement unit 308. The resistance measuring unit 308b may be disposed in the staple cartridge 200, or may be disposed in the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the resistor 308a is also lowered in conjunction therewith, and the length from one end to the other end contacting the resistance measuring unit 308b is changed (short). Become). Therefore, the resistance value measured by the resistance measuring unit 308b changes.

  In this case, the measured value recording unit 18 records the measured resistance value as a measured value in the history table 21. For example, the relationship deriving unit 19 calculates a change amount of the resistance value per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining staple amount by dividing the difference between the current resistance value and the resistance value when the remaining staple amount becomes 0 by V. The resistance value when the remaining staple amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  The resistance measuring unit 308b may be fixed to the pressure plate 204, and the resistor 308a may be fixed to the movement of the pressure plate 204.

  Next, FIG. 21 is a diagram illustrating a seventh example of the measurement unit. FIG. 21 shows an example in which a pressure sensor 309 is used as the measurement unit 300. For example, the pressure sensor 309 is arranged on the ceiling portion of the staple cartridge 200 that is one end of the spring 205 in the expansion / contraction direction of the spring 205 (a direction in which the staples are stacked) so that the load (pressure) of the spring 205 can be measured. Established.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the spring 205 is expanded, and the load detected by the pressure sensor 309 is decreased.

  In this case, the measured value recording unit 18 records the load detected by the pressure sensor 309 as a measured value in the history table 21. For example, the relationship deriving unit 19 calculates the amount of change in the load per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the current load and the load when the remaining amount of staples becomes 0 by V. The load when the remaining staple amount becomes 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction device 1.

  A pressure sensor 309 may be disposed on the upper surface of the pressure plate 204.

  Next, FIG. 22 is a diagram illustrating an eighth example of the measurement unit. In FIG. 22, an example in which the identification bar 310 and at least one reflective photosensor 311 are used as the measurement unit 300 is shown. The identification bar 310 is a rod-shaped member that is fixed to the pressure plate 204 and moves up and down in conjunction with the pressure plate 204. The surface (at least one side surface) has a reflectance in one direction in the moving direction (longitudinal direction). It is formed so as to gradually change at a constant rate (increase direction or decrease direction). The reflection type photosensor 311 is fixed and arranged with respect to the movement of the identification bar 310 at a position where the reflectance of the surface of the identification bar 310 can be detected (measured). The reflective photosensor 311 may be disposed in the staple cartridge 200 or may be disposed in the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the identification bar 310 is also lowered in conjunction therewith, and the reflectance measured by the reflective photosensor 311 is changed.

  In this case, the measured value recording unit 18 records the measured reflectance as a measured value in the history table 21. For example, the relationship deriving unit 19 calculates the amount of change in the reflectance per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the reflectivity when the remaining staple amount becomes 0 and the current reflectivity by V. The reflectivity when the staple remaining amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  The reflection type photosensor 311 may be fixed to the pressure plate 204 and the identification bar 310 may be fixed to the movement of the pressure plate 204.

  Further, a transmissive photosensor may be used instead of the reflective photosensor. In this case, the identification bar 310 may be formed so that the transmittance changes in one direction at a constant rate in the longitudinal direction, and the transmittance detected by the transmissive photosensor may be used as a measurement value.

  Next, FIG. 23 is a diagram illustrating a ninth example of the measurement unit. FIG. 23 shows an example in which an identification bar 312 and a plurality of reflective photosensors 313 are used as the measurement unit 300. The identification bar 312 is a rod-like member that is fixed to the pressure plate 204 and moves up and down in conjunction with the pressure plate 204, and has a predetermined pattern (for example, a gray code counter pattern) on its surface (at least one side surface). Is formed (printed). The plurality of reflective photosensors 313 are arranged so as to be fixed with respect to the movement of the identification bar 312 so that they are arranged in a line in a direction intersecting (orthogonal) with the movement of the identification bar 312. The presence or absence of reflection of light from the surface of the position is detected. That is, the pattern formed on the surface of the identification bar 312 includes a portion that reflects light (a portion where the reflectance is a predetermined threshold or more) and a portion that does not reflect light (a portion where the reflectance is less than the predetermined threshold). The arrangement (permutation) of the configured part that reflects and does not reflect light changes in the longitudinal direction of the identification bar 312 corresponding to each reflective photosensor 313. The reflective photosensor 313 may be disposed in the staple cartridge 200 or may be disposed in the attachment portion of the staple cartridge 200 on the post-processing device 125 side.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the identification bar 312 is also lowered in conjunction therewith, and the permutation of presence / absence of reflection of light detected by each reflective photosensor 313 is changed. .

  In this case, the measurement value recording unit 18 records the permutation of presence / absence of reflection (ON / OFF) detected by the plurality of reflection type photosensors 313 as a measurement value in the history table 21. The relationship deriving unit 19 acquires information in which the remaining amount of staples is registered for each permutation of presence / absence of reflection, which is recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction device 1. . The remaining amount determination unit 13 obtains an estimated value of the remaining amount of staples by applying the present reflection to the information.

  Note that the reflective photosensor 313 may be fixed to the pressure plate 204 and the identification bar 312 may be fixed to the movement of the pressure plate 204.

  Further, a transmissive photosensor may be used instead of the reflective photosensor.

  Next, FIG. 24 is a diagram illustrating a tenth example of the measurement unit. 24, the same parts as those in FIG. 22 are denoted by the same reference numerals, and the description thereof is omitted. FIG. 24 shows an example in which an identification bar 310, a light guide line 314, an optical sensor 315, and the like are used as the measurement unit 300. The light guide line 314 is constituted by, for example, an optical fiber, and transmits light detected from the surface of the identification bar 310 at the detection position 316 to the optical sensor 315. The optical sensor 315 detects light transmitted by the light guide line 314 and outputs an electrical signal.

  In such a configuration, when the position of the pressure plate 204 is lowered in accordance with the consumption of staples, the identification bar 310 is also lowered in conjunction therewith, and the measurement value by the optical sensor 315 is changed.

  In this case, the measurement value recording unit 18 records the measurement value obtained by the optical sensor 315 in the history table 21. For example, the relationship deriving unit 19 calculates the amount of change in the measured value per staple (this calculation result is assumed to be V). The remaining amount determination unit 13 calculates an estimated value of the remaining amount of staples by dividing the difference between the measured value when the remaining amount of staples becomes 0 and the current measured value by V. The measured value when the staple remaining amount is 0 may be recorded in advance in the information storage unit 201 of the staple cartridge 200 or the auxiliary storage device 112 of the multifunction machine 1.

  According to the configuration as in the tenth example, it is possible to secure a certain distance between the sensors and the staple cartridge 200, and thus it is possible to increase the degree of freedom of the arrangement positions of the sensors. FIG. 24 corresponds to a modification of the eighth example, but the identification bar 312 in the ninth example may be used instead of the identification bar 310. In this case, light at a plurality of detection positions transmitted from a plurality of light guide lines may be detected by a plurality of light sensors.

  By the way, in FIGS. 15 to 24, the means for detecting the change in the height of the staple stack 203 (the position of the pressure plate 204) has been described. By applying a means similar to the above means in the lateral (horizontal) direction, the amount of movement of the staple pushing unit 206 whose position changes in the lateral (horizontal) direction according to the consumption of each staple is measured, The measurement value may be used for estimating the remaining amount of staples.

  As described above, according to the third embodiment, the remaining amount of staples is predicted based on a history of physical quantities (measured values) that change according to staple consumption. Therefore, even when only staples (staple stack 203) are supplied in the same staple cartridge 200, the remaining amount of staples can be appropriately predicted.

  The history table 21 may be recorded in the information storage unit 201 of the staple cartridge 200.

  Further, for example, as in the sixth example, when the absolute value of the remaining amount of staples can be derived from the measurement value, based on the measurement value, directly (the staple consumption amount and the change in the measurement value The remaining amount of staples may be obtained (without deriving the relationship).

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to such specific embodiment, In the range of the summary of this invention described in the claim, various deformation | transformation・ Change is possible.

1 is an external view of an example of a multifunction machine according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration example of a control unit and a post-processing unit of the multifunction machine according to the first embodiment. It is a block diagram of the staple cartridge in 1st embodiment. FIG. 3 is a diagram for explaining an example functional configuration of a multifunction peripheral according to the first embodiment. 3 is a flowchart for explaining a processing procedure of the multifunction peripheral according to the first embodiment. It is a figure for demonstrating the function structural example of the multifunctional device in 2nd embodiment. It is a figure which shows the structural example of a residual amount management table. 10 is a flowchart for explaining a staple remaining amount determination process according to the second embodiment. 12 is a flowchart for explaining a staple remaining amount update process according to the second embodiment. It is a figure which shows the structural example of the control part and post-processing part of the multifunctional machine in 3rd embodiment. It is a figure for demonstrating the function structural example of the multifunctional device in 3rd embodiment. It is a figure which shows the structural example of a log | history table. 15 is a flowchart for explaining a staple remaining amount determination process according to the third embodiment. 10 is a flowchart for explaining a staple remaining amount update process according to the third embodiment. It is a figure which shows the 1st example of a measurement part. It is a figure which shows the 2nd example of a measurement part. It is a figure which shows the 3rd example of a measurement part. It is a figure which shows the 4th example of a measurement part. It is a figure which shows the 5th example of a measurement part. It is a figure which shows the 6th example of a measurement part. It is a figure which shows the 7th example of a measurement part. It is a figure which shows the 8th example of a measurement part. It is a figure which shows the 9th example of a measurement part. It is a figure which shows the 10th example of a measurement part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Multifunction machine 11 Print processing control part 12 Required amount calculation part 13 Remaining amount determination part 14 Insufficiency determination part 15 Insufficiency notification part 16 Remaining amount update part 17 Remaining amount management table 18 Measurement value recording part 19 Relationship derivation part 21 History table 100 Main body Unit 110 Control unit 111 CPU
112 Auxiliary storage device 113 Memory device 114 Network interface 115 Communication device 116 Post-processing input / output unit 121 Imaging unit 122 Automatic document feeding unit 123a, 123b Paper feeding unit 124a, 124b Paper discharging unit 125 Post-processing unit 126 Printing unit 127 Operation unit 200 Staple cartridge 201 Information storage unit 202 Information communication unit 203 Staple stacking 204 Pressure plate 205 Spring 206 Staple pushing unit 207 Staple ejection unit 300 Measuring unit 301 Reflective photosensor 302a Light emitting element 302b Light receiving element 303 Distance sensor 304 Pressure plate interlocking member 305 Rotary encoder 306 Pressure plate interlocking member 307 Rotary switch 308 Sliding resistor 308a Resistor 308b Resistance measurement unit 309 Pressure sensors 310 and 312 Identification bars 311 and 313 Sensor 314 electrically ray 315 light sensor B bus

Claims (19)

A staple cartridge used in an image forming apparatus,
A storage means for recording the remaining amount of staples;
A staple cartridge in which the remaining amount of staples recorded in the storage unit is updated in accordance with staple consumption. An image forming apparatus using the staple cartridge according to claim 1,
A remaining amount acquisition means for acquiring the remaining amount of staples recorded in the storage means of the staple cartridge currently in use;
A required amount calculating means for calculating a required amount of staples in accordance with a print instruction;
Determining means for determining a shortage of staples by comparing the remaining amount and the required amount;
An image forming apparatus comprising: a notification unit that notifies the shortage of staples according to a determination result by the determination unit. A staple shortage notification method executed by an image forming apparatus using the staple cartridge according to claim 1,
A remaining amount acquisition procedure for acquiring the remaining amount of staples recorded in the storage procedure of the staple cartridge currently used;
A required amount calculation procedure for calculating the required amount of staples according to a print instruction;
A determination procedure for determining a shortage of staples by comparing the remaining amount and the required amount;
A staple shortage notification method comprising: a notification procedure for notifying the shortage of staples according to a determination result in the determination procedure. An image forming apparatus using a staple cartridge,
According to identification information for identifying each staple cartridge, a staple remaining amount storage unit in which the staple remaining amount is recorded,
The identification information recorded on the staple cartridge currently used is acquired, and the remaining amount of the staple cartridge currently used is acquired based on the acquired identification information and the staple remaining amount storage unit. A quantity acquisition means;
A required amount calculating means for calculating a required amount of staples in accordance with a print instruction;
Determining means for determining a shortage of staples by comparing the remaining amount and the required amount;
An image forming apparatus comprising: a notification unit configured to notify the staple shortage according to a determination result of the determination unit. A staple shortage notification method executed by an image forming apparatus using a staple cartridge,
In the storage device of the image forming apparatus, the remaining amount of staples is recorded according to identification information for identifying each staple cartridge,
The remaining identification information recorded on the staple cartridge currently used is acquired, and the remaining amount of the staple cartridge currently used is acquired based on the acquired identification information and the staple remaining amount storing procedure. Quantity acquisition procedure;
A required amount calculation procedure for calculating the required amount of staples according to a print instruction;
A determination procedure for determining a shortage of staples by comparing the remaining amount and the required amount;
A staple shortage notification method comprising: a notification procedure for notifying the shortage of staples according to a determination result in the determination procedure. A staple cartridge used in an image forming apparatus,
A measuring means for measuring a physical quantity that changes according to the consumption of staples or a change quantity of the physical quantity;
A staple cartridge comprising: a notification unit configured to notify the image forming apparatus of a measurement value obtained by the measurement unit. The measuring means includes
A plurality of sensors arranged side by side so that at least reflection of light by the staples can be detected in a direction in which the staples are stacked;
The staple cartridge according to claim 6, wherein at least one of the number of sensors that detect light reflection and the number of sensors that do not detect light reflection is used as the measurement value. The measuring means includes
A plurality of light emitting elements arranged side by side in the direction in which the staples are stacked, and a plurality of light receiving elements arranged to face the issuing element across the staples,
The staple cartridge according to claim 6, wherein at least one of the number of light receiving elements that detect light from the issuing element and the number of light receiving elements that do not detect light from the issuing element is used as the measurement value. . The measuring means includes
The staple cartridge according to claim 6, wherein a distance of an interval at which the distance changes according to consumption of the staple is measured. The measuring means includes
An encoder,
A member that moves relative to the encoder in accordance with consumption of the staple,
The staple cartridge according to claim 6, wherein the encoder measures the amount of movement of the member. The measuring means includes
The staple cartridge according to claim 6, further comprising a variable resistor that changes a resistance value measured according to consumption of the staple. The measuring means includes
The staple cartridge according to claim 6, wherein a load acting on the staple in a direction in which the staple is stacked is measured. The measuring means includes
A sensor for measuring the reflectance,
A member that moves relative to the sensor in accordance with consumption of the staple,
The surface of the member is formed such that the reflectance changes in the relative movement direction of the member,
The staple cartridge according to claim 6, wherein the sensor measures the reflectance of the member. The measuring means includes
A sensor for measuring transmittance;
A member that moves relative to the sensor in accordance with consumption of the staple,
The member is formed such that the transmittance changes in the relative movement direction of the member,
The staple cartridge according to claim 6, wherein the sensor measures the transmittance of the member. The measuring means includes
A plurality of sensors for measuring the reflectance,
A member that moves relative to the plurality of sensors according to consumption of the staple,
On the surface of the member, a pattern is formed in which a permutation of reflectance detected by the plurality of sensors changes according to the movement of the member,
The staple cartridge according to claim 6, wherein a permutation of reflectance detected by the plurality of sensors is used as the measured value. An image forming apparatus using the staple cartridge according to any one of claims 6 to 15,
Recording means for recording the staple consumption amount and the measured value notified from the staple cartridge in accordance with staple consumption;
A relationship deriving unit for deriving a relationship between the staple consumption and the measurement value based on a history of the recorded staple consumption and the measurement value;
A required amount calculating means for calculating a required amount of staples according to a print instruction;
A remaining amount estimating means for estimating the remaining amount of staples in the staple cartridge based on the measured value when a print instruction is given and the relationship between the consumption and the measured value;
A determination means for determining a shortage of staples by comparing the required amount with the estimated remaining amount;
An image forming apparatus comprising: a notification unit configured to notify the staple shortage according to a determination result of the determination unit. A staple shortage notification method executed by an image forming apparatus using the staple cartridge according to any one of claims 6 to 15,
A recording procedure for recording a staple consumption amount and the measurement value notified from the staple cartridge in accordance with staple consumption;
A relationship derivation procedure for deriving a relationship between the staple consumption and the measurement value based on the recorded staple consumption and the history of the measurement value;
A required amount calculation procedure for calculating a required amount of staples according to a print instruction;
A remaining amount estimation procedure for estimating the remaining amount of staples in the staple cartridge based on the measured value when a print instruction is given and the relationship between the consumed amount and the measured value;
A determination procedure for determining a shortage of staples by comparing the required amount with the estimated remaining amount;
A staple shortage notification method, comprising: a notification procedure for notifying the staple shortage according to a determination result of the determination procedure. A measuring means for measuring a physical quantity that changes according to the consumption of staples or a change quantity of the physical quantity;
A recording unit for recording a staple consumption amount and a measurement value by the measurement unit in accordance with staple consumption;
A relationship deriving unit for deriving a relationship between the staple consumption and the measurement value based on a history of the recorded staple consumption and the measurement value;
A required amount calculating means for calculating a required amount of staples in accordance with a print instruction;
A remaining amount estimating means for estimating the remaining amount of staples based on the measured value when a printing instruction is given and the relationship between the consumption and the measured value;
A determination means for determining a shortage of staples by comparing the required amount with the estimated remaining amount;
An image forming apparatus comprising: a notification unit configured to notify the staple shortage according to a determination result of the determination unit. A staple shortage notification method executed by an image forming apparatus,
A measurement procedure for measuring a physical quantity that changes according to the consumption of staples, or a change quantity of the physical quantity;
A recording procedure for recording the staple consumption and the measurement value according to the measurement value procedure according to the staple consumption;
A relationship derivation procedure for deriving a relationship between the staple consumption and the measurement value based on the recorded staple consumption and the history of the measurement value;
A required amount calculation procedure for calculating the required amount of staples according to a print instruction;
A remaining amount estimation procedure for estimating the remaining amount of staples based on the measured value when a print instruction is given and the relationship between the consumption and the measured value;
A determination procedure for determining a shortage of staples by comparing the required amount with the estimated remaining amount;
A staple shortage notification method, comprising: a notification procedure for notifying the staple shortage according to a determination result of the determination procedure.