JP2006117335A - Postprocessing device and image forming device equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a postprocessing device capable of setting an output format intended by a user even if the number of original sheets exceeds the number of sheets capable of being stapled, and an image forming device equipped with the postprocessing device. <P>SOLUTION: In the case that the number of original sheets exceeds the number of sheets capable of being stapled, after printing is finished, the number of sheets set by the user is compared with the number of discharged sheets to a stack part 503, in a part 25 for determining the set number of sheets. As a result, when the number of discharged sheets exceeds the number of sheets set by the user, the discharged sheets are delivered after being stapled in a staple processing part 504. When the number of discharged sheets is below the number of sheets set by the user, the discharged sheets are delivered without being stapled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a post-processing apparatus that performs stapling as post-processing on a recording sheet that has been subjected to image forming processing, and an image forming apparatus including the post-processing apparatus.

  2. Description of the Related Art In recent years, a post-processing device that performs a stapling process that automatically binds a plurality of recording sheets on which a predetermined document image is formed by an image forming apparatus such as a printer, a copier, or a facsimile machine, using a binding needle (staple). Are known. When binding a plurality of sheets by this stapling process, the number of sheets that can be stapled (the number of sheets that can be stapled) is determined by the mechanical performance of the post-processing device. Processing could not be performed.

  Therefore, in Patent Document 1, when the number of recording sheets discharged from the image forming apparatus exceeds the number of sheets that can be stapled in the post-processing apparatus, the number of discharged recording sheets is reduced by reducing the image data or reducing the character spacing. Thus, a technique is disclosed in which the number of prints is set to be equal to or smaller than the number of staples and the stapling process is performed.

Further, in Patent Document 2, when the number of recording sheets discharged from the image forming apparatus exceeds the number of staples that can be stapled in the post-processing apparatus, the number of prints is set to be equal to or less than the number of staples that can be stapled. Techniques for performing are disclosed.
JP-A-8-119529 JP 7-157178 A

  However, in Patent Document 1, the original image data is reduced in order to perform the stapling process, and the output desired by the user may not be achieved. For example, when the original image data is small, it is further difficult to see because it is further reduced.

  Further, in Patent Document 2, if the number of recording sheets discharged from the image forming apparatus exceeds the number of sheets that can be stapled in the post-processing apparatus, the sheets are necessarily separated. However, for example, if the number of sheets is over, for example, one or two sheets, an output format such as a booklet that has been stapled and one or two single sheets is preferable without stapling.

  The present invention has been made in view of such a situation. Even when the number of recording sheets discharged from the image forming apparatus exceeds the number of staples, the user desires without reducing the image data. It is an object of the present invention to provide a post-processing apparatus capable of discharging recording paper that has been stapled in a format, and an image forming apparatus including the post-processing apparatus.

  The invention according to claim 1 is an image forming apparatus in which a document number counting unit for counting the number of read documents and a recording sheet discharged from an image forming unit for transferring an image of the document to the recording sheet are positioned. A stack unit to be stacked; a counting unit that counts the number of discharged recording sheets stacked on the stack unit; and an allowable number determination unit that compares the number of discharged sheets counted by the counting unit with a preset number of staples. When the allowable number determination means determines that the number of discharged sheets and the number of staples are equal, the stapling means for performing a stapling process on the recording sheets stacked on the stack portion, and the staple means are stacked on the stack portion. When the stapling process is performed on the recording paper, the recording paper on which the stapling process has been performed is the stapling process. Recording paper discharging means for discharging from the printing section, and when the number of the read originals counted by the original number counting means is larger than the number of staples and the discharge of the recording paper from the image forming means is completed. The number of discharged sheets counted by the means is compared with a preset set number of sheets to determine whether or not to perform stapling processing. It is determined that stapling processing is performed by the set number of sheets determining means. And a stapling control unit for controlling the stapling unit to perform a stapling process on the recording sheets stacked on the stack unit.

  According to this configuration, when the recording paper is discharged from the image forming unit, the recording sheet is positioned and stacked on the stack unit, and the number of discharged sheets is counted up by the counting unit. When it is determined by the allowable number determination means that the number of discharged sheets has reached a preset number of staples, the stapling means performs a stapling process on the recording sheets stacked on the stack unit, and the recording sheets are bundled together. Put together. Subsequently, the bundle of collected recording sheets is discharged from the stack unit by the recording sheet discharging unit.

  Here, when the number of read originals counted by the document number counting unit is larger than the number of staples, that is, after the processing up to the above discharge is performed at least once, the recording paper is discharged from the image forming unit. Think when you are finished. At this time, the number of sheets (discharged sheets) stacked on the stack unit is one or more and less than the number of staples.

  In this case, the set number determining means compares the number of sheets discharged to the stack unit with a preset set number of sheets, and determines whether or not to perform stapling. As a result of the determination, when it is determined that the stapling process is to be performed, the stapling control unit controls the stapling unit to perform the stapling process for collecting the recording sheets stacked on the stack unit. On the other hand, when it is determined that the stapling process is not performed, the stapling unit does not function, and the recording sheets stacked on the stack unit remain unstapled.

  According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, the set number determining unit determines that a stapling process is performed when the discharged number is equal to or greater than the set number, and the discharged number is When the number is smaller than the set number, it is determined that the stapling process is not performed.

  According to this configuration, the set number determination unit determines whether or not to perform the stapling process based on whether the number of discharged sheets is larger or smaller with reference to the set number of sheets. For example, when the set number of sheets is five, it is determined that the stapling process is performed when there are five or more recording sheets stacked in the stack unit, and the stapling process is not performed when the number of recording sheets is four or less.

  A third aspect of the present invention is the image forming apparatus according to the first or second aspect, further comprising user setting means capable of setting at least the set number of sheets.

  According to this configuration, at least the set number can be set by the user setting means.

  A fourth aspect of the present invention is the image forming apparatus according to the third aspect, wherein the number of staples can be set by the user setting means.

  According to this configuration, the number of staples can be set by the user setting means.

  A fifth aspect of the present invention is the image forming apparatus according to the third or fourth aspect, wherein the user setting unit is further configured to be able to set the number of divisions, and the number of read originals and the user setting According to another aspect of the present invention, there is further provided a calculated sheet number calculating means for calculating the staple number based on the division number set by the means.

  According to this configuration, the number of staples is calculated by the calculated number calculation means based on the number of divisions set by the user setting means and the number of read originals counted by the original number counting means. This is, for example, a calculation method in which the number of originals is divided by the number of divisions, and the integer part of the quotient obtained as a result is set as the number of staples. Then, for each calculated number of staples, a stapling process is performed for collecting the recording sheets stacked on the stack unit into a bundle.

  A sixth aspect of the present invention is the image forming apparatus according to the fourth or fifth aspect, further comprising an input number storage means for storing a plurality of staple numbers set by the user setting means, the image forming means Until the discharge of the recording paper from the recording sheet is completed, the allowable number determination means determines that the one staple number read in the predetermined order from the input number storage means is equal to the discharge number. A series of processes in which stapling processing is performed on the recording sheets stacked in the stack section, and the recording sheet discharging unit discharges the recording sheets on which the stapling processing has been performed, is performed. It repeats by the number of elements consisting of.

  According to this configuration, the set number of staples is stored by the input number storage means. Then, one staple number read in a predetermined order among the plurality of staple numbers stored in the input number storage means is output to the allowable number determination means. Then, in this permissible number determination means, the one staple number is compared with the number of discharged recording sheets stacked on the stack portion. As a result, if it is determined that the number of ejected sheets is smaller, the recording sheet is further ejected, and the ejection is continued until the number of ejected sheets and the number of staples are equal. When the allowable number determination means determines that the number of ejected sheets and the number of staples are equal, the stapling process for collecting the recording sheets stacked on the stack portion by the stapling means is performed. When this stapling process is performed, the next one stapling number stored in the input number storing unit is output to the allowable number determining unit, and the above processing is performed on the elements of the stapling number stored in the input number storing unit. Repeated by number.

  A seventh aspect of the present invention is the image forming apparatus according to any one of the third to sixth aspects, wherein the user setting storage unit stores at least the set number of sheets set by the user setting unit for each user. It is further provided with a feature.

  According to this configuration, at least the set number of sheets set by the user setting unit is stored for each user by the user setting storage unit. When the discharge of the recording paper from the image forming unit is completed, the set number of sheets is read from the user setting storage unit and compared with the number of discharged sheets to determine whether or not to perform the stapling process.

  The invention according to claim 8 is connectable to a main body of an image forming apparatus comprising: a document number counting unit that counts the number of documents to be read; and an image forming unit that transfers an image of the document to a recording sheet. A stack unit that positions and stacks recording sheets discharged from the image forming unit, a counting unit that counts the number of discharged recording sheets stacked on the stack unit, and a preset number of sheets discharged by the counting unit. An allowable number determination unit that compares the stapled sheet number and a stapling unit that performs a stapling process on the recording sheets stacked on the stack unit when the allowable number determination unit determines that the discharge number and the staple number are equal. When the stapling means performs a stapling process on the recording sheets stacked on the stack portion, A post-processing apparatus including a recording paper discharging unit that discharges the recording paper subjected to the stapling process from the stack unit, wherein the main body of the image forming apparatus is counted by the document number counting unit. When the number of originals to be read is larger than the number of staples and the discharge of the recording paper from the image forming unit is completed, the number of discharged sheets counted by the counting unit is compared with a preset set number of sheets, A set number determination unit that determines whether or not to perform stapling processing; and when the set number determination unit determines that the stapling process is to be performed, the stapling unit is controlled to staple the recording sheets stacked on the stack unit. And a stapling control means for performing processing.

  According to this configuration, the recording sheets discharged from the image forming unit provided in the main body of the image forming apparatus are positioned and stacked on the stack unit provided in the post-processing device, and the number of discharged sheets is counted by the counting unit. Will be counted up. Then, when it is determined by the allowable number determination means provided in the main body of the image forming apparatus that the number of discharged sheets has reached a preset number of staples, the stapling means provided in the post-processing device is added to the stack portion. A stapling process is performed on the stacked recording sheets, and the recording sheets are bundled together. Subsequently, the bundle of collected recording sheets is discharged from the stack unit by the recording sheet discharging unit.

  Here, when the number of read originals counted by the document number counting unit is larger than the number of staples, that is, after the processing up to the above discharge is performed at least once, the recording paper is discharged from the image forming unit. Think when you are finished. At this time, the number of sheets (discharged sheets) stacked on the stack unit is one or more and less than the number of staples.

  In this case, the set number determining means provided in the main body of the image forming apparatus compares the number of sheets discharged to the stack unit with a preset set number of sheets, and determines whether or not to perform stapling. As a result of the determination, when it is determined that the stapling process is to be performed, the staple control unit provided in the main body unit of the image forming apparatus controls the stapling unit provided in the post-processing device, and the recording stacked in the stack unit is performed. A stapling process is performed to bundle paper. On the other hand, when it is determined that the stapling process is not performed, the stapling unit does not function, and the recording sheets stacked on the stack unit remain unstapled.

  According to the first aspect of the present invention, when discharge of the recording paper from the image forming unit is completed when the number of read originals is larger than the number of staples, the originals are stacked on the stack unit based on one standard of the set number of sheets. It is possible to select whether or not to perform stapling on the recording paper. Therefore, for example, when the number of ejected sheets is small, it is possible to easily perform processing such as ejecting a single sheet without performing stapling. Further, since the recording paper is bundled and discharged when the number of staples is reached, for example, it is not necessary to reduce the image data and reduce the number of discharged sheets to be equal to or less than the number of staples. Accordingly, it is possible to provide an image forming apparatus capable of suppressing stapling and performing stapling processing in a format desired by the user.

  According to the second aspect of the present invention, since it is determined whether or not the stapling process is performed based on one criterion of the set number of sheets, whether the number of discharged sheets is larger or smaller than that, the configuration can be simplified. .

  According to the third aspect of the invention, the user can set the set number of sheets. That is, for example, when discharging of recording paper from the image forming unit is completed, if about 10 sheets of recording paper are stacked on the stack portion, stapling processing is desired, or if about 1 or 2 sheets, stapling processing is not performed. The user himself can make a setting such as discharging. Thereby, the stapling process according to the user's preference can be performed.

  According to the invention described in claim 4, the user himself / herself can set the number of staples. That is, for example, the user himself / herself can make a setting for stapling every 10 sheets or 20 sheets of recording paper. Thereby, the stapling process according to the user's preference can be performed.

  According to the fifth aspect of the present invention, it is not necessary to directly specify the number of staples, the staple number is calculated simply by setting the number of divisions, and the stapling process is performed on the recording paper for each staple number. Therefore, the range of stapling processes that can be set by the user is widened.

  According to the sixth aspect of the invention, the stapling process is sequentially performed for each number of staples set by the user in the input number storage means. As a result, a stapling process according to the user's preference can be performed.

  According to the seventh aspect of the invention, since the set number of sheets set by the user is stored, the stapling process according to the user's preference can be executed without setting the set number of sheets every time the image forming process is performed. It becomes possible.

  According to the eighth aspect of the present invention, when the number of originals to be read is larger than the number of staples, when the discharge of the recording paper from the image forming unit is completed, the sheets are stacked on the stack unit based on one criterion of the set number of sheets. It is possible to select whether or not to perform stapling on the recording paper. Therefore, for example, when the number of ejected sheets is small, it is possible to easily perform processing such as ejecting a single sheet without performing stapling. Further, since the recording paper is bundled and discharged when the number of staples is reached, for example, it is not necessary to reduce the image data and reduce the number of discharged sheets to be equal to or less than the number of staples. As a result, it is possible to provide a post-processing device that can be connected to the image forming apparatus and can perform stapling processing in a format desired by the user while suppressing waste of stapling.

  Hereinafter, a copying machine will be described as an example of an image forming apparatus including a post-processing apparatus according to the present invention with reference to the drawings. In addition, the structure or process which attached | subjected the same code | symbol in each figure shows that it is the same structure or process, The detailed description is abbreviate | omitted.

  FIG. 1 is a schematic sectional view showing an internal configuration of a copying machine 1 which is an example of an image forming apparatus according to an embodiment of the present invention. FIG. 2 is an example of an image forming apparatus according to an embodiment of the present invention. 2 is a functional block diagram showing a schematic configuration of the copying machine 1 as shown in FIG.

  The copying machine 1 includes a main body (housing) 10 having an image forming unit (image forming means) 100, a document feeding unit 200 and a document reading unit 300 installed on the upper part of the main body 10, and the main body 10. The installed recording paper conveyance unit 400, the post-processing unit 500 installed on one side of the main unit 10, the operation display unit 600 installed on the front side of the main unit 10, and the main unit 10 A power supply unit 700, a detection unit 800, and a paper feed unit 900 are provided.

  The document reading unit 300 is a functional unit that reads a document and generates image data corresponding to the document. The document reading unit 300 includes a CCD (Charge Coupled Device) sensor that generates image data from an optically acquired document image, an unillustrated scanner including an exposure lamp, and the like. A contact glass 301 and a contact glass 302 are provided on the upper surface. The document reading unit 300 scans a document placed on the contact glass 301 or a document conveyed so as to be in contact with the contact glass 302 by the document feeding unit 200. The control unit 20 will be described later. Output to.

  The document feeding unit 200 is a functional unit that feeds a document to the document reading unit 300. The document feeding unit 200 includes a document placement unit 201, a carry-in drive unit 202 including a carry-in roller pair, a conveyance roller pair 203, a discharge roller pair 204, a paper discharge table 205, and a document detection switch 206 that detects the presence or absence of a document. The document placed on the document placement unit 201 is automatically conveyed one by one while being in contact with the contact glass 302, and is discharged onto the sheet discharge table 205 after exposure scanning of the document.

  Further, the document feeding unit 200 is configured to be retractable, and when the contact glass 301 is lifted upward so as to open the upper surface of the contact glass 301, a read document, for example, a book that is opened in a spread state, is formed on the upper surface of the contact glass 301. Etc. can be placed. Further, the document detection switch 206 has an electronic counter and the like, and also has a document number counter function for counting the number of documents to be read.

  The paper feed unit 900 is a functional unit that feeds the recording paper conveyed by the recording paper conveyance unit 400. The paper feed unit 900 includes paper feed cassettes 901 and 902 and a manual feed tray 903. The paper feed cassettes 901 and 902 store recording paper in the main body 10 for each size. The manual feed tray 903 is used for manually feeding recording paper. The manual feed tray 903 is configured to be openable and closable at one side portion of the main body 10. When performing manual paper feeding, the recording paper is placed on the manual feed tray 903 with the manual feed tray 903 opened. Is done. In this case, the recording paper is placed in a state of being inserted into a storage space on the main body 10 side of the manual feed tray 903.

  The recording paper transport unit 400 is a functional unit that transports the recording paper fed from the paper feeding unit 900. The recording paper transport unit 400 is housed in transport paths 401 to 403 for transporting recording paper from the paper feed cassettes 901 and 902 and the manual feed tray 903 to the image forming unit 100, and the paper feed cassettes 901 and 902 and the manual feed tray 903, respectively. Pickup rollers 411 to 413 for taking out the recording paper being fed, paper feed roller pairs 414 to 416 for feeding the taken recording paper one by one to each conveyance path, and recording paper in each conveyance path 401 to 403 Conveying roller pairs 417 to 420 for conveying are provided. Note that the conveyance path 401 and the conveyance path 402 are merged at each downstream portion, and a conveyance path from the merged position to the image forming unit 100 is a conveyance path 403.

  The image forming unit 100 is a functional unit that forms a predetermined image (prints) on the recording paper conveyed by the recording paper conveyance unit 400. The image forming unit 100 includes a photosensitive drum 101 that is rotatably supported in an arrow direction shown in FIG. 1, and a charging unit 102, a developing unit 103, a cleaning unit 104, and the like disposed around the photosensitive drum 101. Laser scanning unit 105, transfer roller 106 and fixing roller pair 107, conveyance path 108 for conveying the recording paper from transfer roller 106 to fixing roller pair 107, and recording paper from transfer roller 106 to discharge tray 120 and post-processing unit 500, respectively. , And discharge roller pairs 111 and 112 for discharging (carrying in) the recording paper conveyed through the conveyance paths 109 and 110 to the discharge tray 120 and the post-processing unit 500, respectively.

  Further, the image forming unit 100 includes a print number counter 113 that counts the number of recording sheets (printed documents) discharged from the discharge roller pair 112 to the post-processing device 500. The printed sheet counter 113 is an electronic counter, for example. In addition to this, the control unit 20 may have a function of counting the number of printed sheets. For example, the configuration may be such that the number of printed sheets is counted up every time image data for one sheet of recording paper is output from the image storage unit 30 to the laser scanning unit 105.

  The charging unit 102 is a functional unit that uniformly charges the surface of the photosensitive drum 101 to a predetermined potential. The laser scanning unit 105 is a functional unit that irradiates the surface of the photosensitive drum 101 with a laser beam based on the image data transmitted from the image storage unit 30 and forms an electrostatic latent image on the surface of the photosensitive drum 101. The developing unit 103 is a functional unit that exposes an image (original image) by attaching toner to the electrostatic latent image.

  Further, the transfer roller 106 is a functional unit that transfers the toner image that appears on the photosensitive drum 101 to the recording sheet while the conveyed recording sheet is pressed against the photosensitive drum 101. The fixing roller pair 107 is a functional unit that fixes the toner image transferred to the recording paper. The fixing roller pair 107 includes a heat roller and a pressure roller (not shown). The toner on the recording paper is melted by the heat of the heat roller, and the pressure is applied by the pressure roller to fix the toner on the recording paper.

  The heat roller has a built-in heater (heat source) such as a halogen lamp, and the heater generates heat when power is supplied from the power supply unit 700. When power is supplied to the heater, the surface temperature of the heat roller rises to a predetermined temperature (fixing temperature; for example, about 180 ° C.) at which toner can be fixed. When the power supply to the heater is stopped, the surface temperature of the heat roller becomes lower than the fixing temperature, and after a while falls to the atmospheric temperature (room temperature). The cleaning unit 104 is a functional unit that cleans the toner remaining on the surface of the photosensitive drum 101 after the transfer of the image onto the recording paper is completed.

  The post-processing unit 500 includes a punch processing unit 501 that performs a punching process as post-processing on the recording paper discharged by the discharge roller pair 112, a carry-in roller pair 502 that conveys the discharged recording paper, and the recording that has been conveyed. A stapling processing unit for performing stapling processing for stacking the stacked recording papers as a post-processing on the recording paper receiving base (intermediate stack, stacking unit) 503 for positioning and stacking the papers as recording paper bundles (Stapling means) 504, sort discharge tray 506 that can be moved up and down by the lift mechanism 505, discharge roller pair 507 that discharges the recording paper conveyed from the stack unit 503 to the sort discharge tray 506, and the post-processing unit 500 Non-sorting discharge tray 508 disposed on the upper side surface, and the conveyance direction of the recording paper from the pair of carry-in rollers 502 And a discharge roller pair 510 discharges the sheet to the conveyance branch guide 509, and the non-sort for the discharge tray 508 switched between the stack portion 503 side and the non-sort for the discharge tray 508 side.

  Here, a discharge roller pair 507 that transports the recording paper from the stack unit 503 and discharges the transported recording paper to the sorting discharge tray 506 and the like constitutes a recording paper discharge unit (recording paper discharge unit) 591. It is.

  Further, the post-processing unit 500 is discharged from the main body (housing) 10 of the image forming apparatus to the stack unit 503 in the post-processing unit 500 and counts the number of recording sheets stacked on the stack unit 503. A sheet counter 519 is provided. The discharge number counter 519 is, for example, an electronic counter.

  Further, the post-processing unit 500 includes receiving tray carry-in rollers 511 to 513 for carrying recording paper into the stack unit 503, movable guide members 514 to 516 for guiding the recording paper into the stack unit 503, and a stationary guide unit 517. Are provided at different positions at a predetermined interval with respect to the recording paper loading direction. As a result, it is possible to change the position where the recording paper of different sizes is loaded into the stack unit 503 according to the size of the recording paper, and stack the recording paper with the end portions of the recording paper aligned. In addition to being able to be carried into the section 503, stapling processing by the stapling processing section 504 is enabled.

  The stack unit 503 includes a receiving member (not shown) that receives and holds the lower end of the recording paper carried into the stack unit 503, and a drive unit (not shown) that moves the receiving member in the recording paper unloading direction. ). The drive unit is driven in accordance with a control signal from the control unit 20, whereby the recording paper held by the receiving member is conveyed to the discharge roller pair 507, and the discharge roller pair 507 sorts the output tray for sorting. It is discharged to 506.

  In addition, the stack portion 503 is provided with a pair of width adjusting plates 518 spaced in the width direction of the stack portion 503. This width adjusting plate 518 is disposed so as to reciprocate in the width direction along the surface of the stack portion 503 by a recording paper width adjusting mechanism (not shown) provided on the back side of the stack portion 503. Thereby, the recording paper (recording paper bundle) carried into the stack unit 503 is guided by the width adjusting plate 518 and can be moved in the width direction along the surface of the stack unit 503 for each bundle. Since the paper can be discharged to the sorting discharge tray 506 while being moved in the width direction, the recording paper bundle can be discharged to the sorting discharge tray 506 by shifting the discharge position for each bundle. . In the lifting mechanism 505, the upper surface of the recording sheet bundle discharged onto the sorting discharge tray 506 according to the control signal from the control unit 20 is positioned at a reference position suitable for discharging the recording sheet bundle from the discharge roller pair 507. As described above, this is a function unit that raises and lowers the position of the sorting discharge tray 506.

  The operation display unit 600 is a functional unit (user setting unit) that inputs a predetermined instruction in accordance with a user operation. The operation display unit 600 displays a start key 601 for a user to input a print execution instruction, a numeric keypad 602 for inputting the number of copies to be printed, operation guide information for inputting various copying operation settings, and the like. In addition, a display 603 including a liquid crystal display (LCD) or the like on which various operation buttons and the like including a staple setting button and a punch setting button for inputting post-processing settings such as stapling and punching are displayed. (Display).

  The power supply unit 700 is a functional unit that supplies power to each unit of the copier 1 including the heater of the fixing roller pair 107 (heat roller). The power supply line between the power supply unit 700 and the heater is provided with an unillustrated switch for switching on / off (ON / OFF) of power supply from the power supply unit 700 to the heater, This switch is turned on and off under the control of the control unit 20 described later. When the switch is on, power is supplied to the heater (energized state), and when the switch is off, power is not supplied to the heater (non-energized state).

  The detection unit 800 is a functional unit that detects the presence or absence of recording paper in the manual feed tray 903. The detection unit 800 includes a sensor (hereinafter referred to as a recording paper sensor) 801 that detects the presence or absence of the recording paper. The recording paper sensor 801 includes, for example, a light source that emits light that traverses the manual feed tray 903 in a predetermined direction, and a light receiving element that receives light emitted from the light source. The recording paper sensor 801 is configured such that when the recording paper is placed on the manual feed tray 903, the light emitted from the light source is blocked by the recording paper, and when the recording paper is removed, the light emitted from the light source. Is detected by the light receiving element, and the presence or absence of the recording paper placed on the manual feed tray 903 is detected.

  Here, an example of operations in the main body unit 10 and the post-processing unit 500 during normal copying will be described. During normal copying, the recording sheets stored in the paper feed cassettes 901 and 902 are taken out by pickup rollers 411 and 412, respectively, and transferred by conveyance roller pairs 417, 418 and 420 via conveyance paths 401 and 403. It is conveyed to the roller 106. On the other hand, the recording paper placed on the manual feed tray 903 is taken out by the pickup roller 413 and conveyed to the transfer roller 106 via the conveyance paths 402 and 403 by the conveyance roller pair 419 and 420. The toner image on the photosensitive drum 101 is transferred by the transfer roller 106 to the recording paper conveyed from the paper feed cassettes 901 and 902 or the manual feed tray 903 to the transfer roller 106, and the recording paper on which the toner image is transferred. Is conveyed to the fixing roller pair 107 and the toner image is fixed.

  The image data (original image data) corresponding to the toner image is obtained by, for example, reading an original by the original reading unit 300 and then temporarily stored in the image storage unit 30. The toner image is output from the image storage unit 30 to the laser scanning unit 105 in accordance with the timing at which the recording paper passes the transfer roller 106. Further, the photosensitive member is driven by the laser of the laser scanning unit 105. This has become apparent as a result of exposure of the drum 101.

  The recording paper on which the toner image is fixed by the fixing roller pair 107 is discharged to the discharge tray 120 by the discharge roller pair 111 when the recording paper is not subjected to post-processing. On the other hand, when post-processing is performed on the recording paper, the recording paper is discharged from the main body unit 10 to the post-processing unit 500 by the discharge roller pair 112. When only the punching process is performed on the discharged recording sheet, the punching unit 501 performs the punching process on the recording sheet, and discharges it to the non-sort discharge tray 508 by the carry-in roller pair 502 and the discharge roller pair 510. . When punching a plurality of recording sheets, similarly, the recording sheets are sequentially discharged from the main body 10 to the post-processing section 500, and the punched processes are sequentially performed on the discharged recording sheets. Thereafter, the punched recording paper is discharged to the non-sort discharge tray 508.

  When performing punch processing and stapling processing, first, punch processing by the punch processing unit 501 is performed on the recording paper sequentially discharged from the main body unit 10 to the post-processing unit 500, and these punch processing is performed. Each recording paper is carried into the stack unit 503 and stocked by a pair of carry-in rollers 502 and cradle carry-in rollers 511 to 513. Then, the staple processing unit 504 performs a stapling process on the recording paper bundle stocked in the stack unit 503, and the recording paper bundle subjected to the stapling process is discharged to the sorting discharge tray 506.

  When only the stapling process is performed on the recording paper discharged from the main body unit 10 to the post-processing unit 500, the punching process by the punching process unit 501 is not performed, and the carry-in roller pair 502 and the carriage are carried in the same manner as described above. The recording paper is carried into the stack unit 503 by the rollers 511 to 513, the staple processing unit 504 performs stapling processing on the recording paper, and then the paper is discharged to the sorting discharge tray 506. If no post-processing is performed on the recording paper, the recording paper is discharged from the main body unit 10 to the post-processing unit 500 by the discharge roller pair 112, and then is not subjected to punch processing by the punch processing unit 501. You may discharge to the sort discharge tray 506 or the non-sort discharge tray 508.

  Next, functional blocks showing a schematic configuration of the copying machine 1 will be described with reference to FIG. The copying machine 1 includes a storage unit such as a CPU (Central Processing Unit), a RAM (Random Access Memory) that stores a program that defines the operation of the CPU, or a ROM (Read Only Memory). A control unit 20 that controls the entire operation is provided. The control unit 20 includes an image forming unit 100 including a laser scanning unit 105 and a fixing roller pair 107, a document feeding unit 200 including a document placing unit 201 and a conveyance roller pair 203, a scanner, a contact glass 301, and the like. Document reading unit 300, recording paper conveyance unit 400 including conveyance paths 401 to 403 and conveyance roller pairs 417 to 420, post-processing unit 500 including punch processing unit 501, staple processing unit 504, and the like, start key 601 and display 603 Are connected to a power supply unit 700 including a power supply device, a detection unit 800 including a recording paper sensor 801, the image storage unit 30, and the like.

  The image forming unit 100 further includes a printed sheet count unit 190 including a printed sheet counter 113 that counts the number of recording sheets discharged from the discharge roller pair 112 to the post-processing device 500. The document feeding unit 200 further includes a document number counting unit (document number counting means) 290 that includes an electronic counter and the like and includes a document detection switch 206 that counts the number of documents to be read. The post-processing unit 500 further includes a discharged sheet count unit (counting unit) 590 including a discharged sheet counter 519.

  The image storage unit 30 is a memory that temporarily stores image data of a document read by the document reading unit 300 and image data transmitted from an external device via a network I / F unit (not shown). The image data stored in the image storage unit 30 is synchronized with the timing at which the recording paper passes the transfer roller 106, that is, the timing at which the image corresponding to the image data is suitably printed on the recording paper. Is transmitted to the image forming unit 100 (laser scanning unit 105).

  The control unit 20 includes a ROM (Read Only Memory) that stores a control program of the copier 1, a RAM (Random Access Memory) that temporarily stores data, a microcomputer that reads the control program from the ROM, and executes the program. This is a functional unit that controls the entire apparatus in accordance with predetermined instruction information input in the operation display unit 600 and the like and detection signals from various sensors provided in various places of the apparatus. Further, the control unit 20 includes a user setting storage unit (user setting storage unit) 21, a read document determination unit 22, a print document determination unit 23, an allowable number determination unit (allowable number determination unit) 24, and a set number determination unit (set number of sheets). A determination unit) 25, a calculated number calculation unit (calculation number calculation unit) 26, a calculated number determination unit 27, an input number storage unit (input number storage unit) 28, and a staple control unit (staple control unit) 29.

  The user setting storage unit 21 stores, for example, settings relating to color preferences and post-processing during image formation for each user. When the user logs in, the functional unit outputs, for example, the user set number (set number) set by the user to the set number determination unit 25. Here, the user-set number of sheets is a reference sheet number for determining whether or not to staple the recording paper bundle that has been printed on the original and is discharged to the stack unit 503 and stocked.

  The read document determination unit 22 is a functional unit that determines the presence or absence of a read document placed on the document placement unit 201 based on a signal from the document detection switch 206.

  The printed document determination unit 23 compares the number of sheets printed up to the time of determination with the number of scanned documents, and determines that there is still a document to be printed when the number of scanned documents is larger. This is a functional unit that determines that there is no more document to be printed when the number of sheets is equal to the number of read documents.

  The allowable number determination unit 24 is a functional unit for mainly storing the number of stapleable sheets determined by the mechanical performance of the post-processing apparatus and comparing whether or not the input number is equal. is there. The number of input sheets is, for example, the number of read originals or the number of discharged sheets discharged to the stack unit 503.

  The set number determination unit 25 is a functional unit that compares the user set number and the discharge number. The calculated number calculation unit 26 is a functional unit that calculates the number of sheets to be stapled (hereinafter referred to as a calculated number) from the number of divisions input by the user (hereinafter referred to as a user-specified number of divisions) and the number of documents. . The calculated number determination unit 27 is a functional unit that compares the calculated number and the stapleable number. The input number storage unit 28 is a functional unit that stores the number of sheets input by the user.

  The stapling control unit 29 is a functional unit that controls the stapling processing unit 504 to perform stapling processing on the recording sheets stacked on the stacking unit when the set number determination unit 25 determines that the stapling processing is to be performed.

  The control unit 20 further includes a post-processing content determination unit (not shown) that is a functional unit that determines the content of the post-processing executed by the post-processing unit 500 (hereinafter referred to as post-processing information). The post-processing content determination unit performs stapling and / or stapling on the recording paper in the post-processing unit 500 in response to an input instruction when the staple setting button or the punch setting button is pressed on the display unit 603 of the operation display unit 600. Or set punching. For example, when only the staple setting button is pressed, only the staple processing by the staple processing unit 504 is executed, and when the punch setting button and the staple setting button are pressed, the punch processing by the punch processing unit 501 Staple processing is executed.

  When post-processing information is not set in the post-processing content determination unit, the post-processing in the post-processing unit 500 may not be executed. Further, when the start key 601 is pressed without setting the post-processing information in the post-processing content determination unit, the post-processing content determination unit sets “post-processing content” on the display 603. It may be configured to display a message prompting the setting of post-processing such as “.

  Note that the recording paper discharged from the post-processing unit 500 may be detected by, for example, a sensor disposed in the vicinity of the discharge roller pair 507 and 510.

In the following embodiments, it is assumed that the user-set number of sheets is equal to or less than the stapleable number.

[First Embodiment]
In the present embodiment, an example will be described in which the stapling process is performed on the printed recording paper for each stapleable number of sheets (staple number) determined by the mechanical performance of the post-processing apparatus. At this time, since the number of sheets that can be stapled is equal to or less than the number of sheets that can be stapled, it is possible to select whether to perform the stapling process or to output the original as a single sheet according to the user's preference.

  FIG. 3 is a flowchart showing the flow of stapling processing of the copying machine according to the first embodiment of the present invention.

  First, the user operates the numeric keypad 602 on the operation display unit 600, for example, inputs an ID (personal identification number) given to the individual user, and logs in (step S101). The user setting storage unit 21 in the control unit 20 identifies the logged-in user in response to this input, and the user set number set by the user is output to the set number determination unit 25 (step S102).

  Subsequently, the counter of the document number counting unit 290 that counts the number of read documents is reset (step S103). Then, based on the signal from the document detection switch 206, the read document determination unit 22 determines whether there is a read document in the document placement unit 201 (step S104). If it is determined in this step that there is a read original (Yes in step S104), one of the read originals placed on the original placement unit 201 is conveyed while being brought into contact with the contact glass 302, and the original Reading is done. Then, the read original is discharged onto the paper discharge tray 205 after exposure scanning. At this time, the document number counting unit 290 counts up the number of read documents one by one (step S105).

  This document reading process (steps S104 and S105) is continued until there is no scanned document in the document placement unit 201. If it is determined that there is no read original (No in step S104), the number of originals counted by the original number counting unit 290 is output to the print original determining unit 23. Subsequently, the process proceeds to the subsequent printing process and post-processing after printing.

  In this printing process, first, the counter of the printed sheet count unit 190 that counts the number of printed sheets is reset (step S106). Subsequently, during the printing process, a count value (L) of a loop counter for counting the number of times that the number of printed recording sheets has reached the number of stapleable sheets, that is, the number of bundles of recording sheets stapled and discharged. Is reset (L = 0) (step S501). This loop counter can be configured by, for example, the RAM of the control unit 20 or the like. Then, the counter of the discharge number counting unit 590 that counts the number of discharged sheets (discharged number) to the stack unit 503 in the post-processing unit 500 is reset (step S107).

  Next, the printed document determination unit 23 determines whether there is a document to be printed (step S108). This can be realized, for example, by comparing the number of read originals counted by the original number counting unit 290 with the number of printed pages counted by the printing number counting unit 190 before the determination. That is, when the number of read originals is larger than the number of originals printed by the determination, it is determined that there is still an original to be printed (Yes in step S108). On the other hand, if the number of sheets printed up to the time of determination is equal to the number of originals to be read, it is determined that all the read originals are printed and that there are no more originals to be printed (No in step S108). .

  If it is determined in step S108 that there is a document to be printed (Yes in step S108), the image forming unit 100 performs a printing process on the next recording sheet. At this time, the printed sheet count unit 190 counts up the number of printed recording sheets one by one (step S109). Then, the printed recording paper is discharged to the stack unit 503 and temporarily stocked. At this time, the number of discharged document count unit 590 counts up the number of documents discharged to the stack unit 503 one by one (step S110).

  Then, the allowable number determination unit 24 compares whether the number of staples determined by the mechanical performance of the post-processing apparatus is equal to the number of discharged sheets (step S111). As a result, if it is determined that the number of ejected sheets is smaller than the number of stapled sheets (No in step S111), the process returns to step S108 to further print the document. On the other hand, if it is determined that the number of staples is equal to the number of discharged sheets (Yes in step S111), the count value of the loop counter is incremented by 1 (counting up) (step S502), and the discharged recording is performed. The paper is stapled by the staple processing unit 504, and discharged to the sorting discharge tray 506 by the recording paper discharge unit 591 (step S112). Thereafter, the process returns to step S107 to newly print the original, prints (step S109), and discharges to the stack unit 503 (step S110).

  In the middle of these processes, if the printed document determination unit 23 determines that the number of documents is equal to the number of printed pages (No in step S108), that is, if all read documents have been printed, the loop counter continues. It is determined whether the count value (L) is 0 (step S503). As a result, it is determined that L = 0 (Yes in step S503). That is, since the number of documents is smaller than the number of stapleable sheets, if the stapling process has never been performed, the normal stapling process is performed. The recording sheets collected in a bundle are discharged from the stack unit 503 (step S504).

  On the other hand, in step S503, it is determined that L = 0 is not satisfied (No in step S503), that is, since the number of documents is larger than the number of staples, the stapling process is performed at least once. In the set number determination unit 25, the discharged number and the user set number are compared (step S113).

  As a result, when it is determined that the number of discharged sheets is smaller than the number set by the user (No in step S113), the discharged recording paper is discharged to the sorting discharge tray 506 without being stapled (step S113). S114). On the other hand, when it is determined that the user set number is equal to or less than the number of discharged sheets (Yes in step S113), the staple control unit 29 controls the staple processing unit 504 to cause the discharged recording paper to be stapled. The recording sheets collected in the bundle are discharged to the sorting discharge tray 506 by the recording paper discharge unit 591 (step S115). With these discharge processes, all processes are completed.

  Here, for example, consider a case where a smaller number of recording sheets than the number of stapleable sheets are discharged at the end of printing (No in step S108). If the user wants to discharge all of them one by one without stapling them, the user set number stored in the user setting storage unit 21 may be set to a number larger than the stapleable number. Alternatively, the configuration may be such that a post-processing setting item such as “Do not perform stapling” is selected on the operation display unit 600. On the other hand, for example, if the number of ejected sheets is two or more and it is desired to perform the stapling process collectively, the user set number stored in the user setting storage unit 21 may be set to “2”. As a result, if the number of ejected sheets is 1, the stapling process is not performed (No in step S113), and if the number is 2 or more, the stapling process is performed and ejected (Yes in step S113). This also applies to other embodiments including the same steps as step S113 below.

  Further, in the present embodiment, a stapling process is performed for each number of sheets designated by the user (hereinafter referred to as a stapling designated number of sheets) instead of the number of sheets that can be stapled. It is also possible to select whether to perform stapling processing or to output as a single sheet as it is.

  In order to execute this, for example, after the user logs in (step S101), the stapling designated number (staple number) stored in the user setting storage unit 21 is output to the allowable number determination unit 24. Good. Alternatively, after the user logs in (step S101), for example, the user may operate the numeric keypad 602 on the operation display unit 600 and input the designated number of staples. Thereby, in step S111, it is compared whether or not the number of discharged sheets is equal to the designated number of staples. As a result, the printed discharged original is subjected to a stapling process for each staple specified number. In addition, it is possible to select whether or not to perform the stapling process for the document remaining without the stapling process based on the determination in step S113.

  In the present embodiment, it is also possible to discharge all recording sheets without performing the stapling process. In order to execute this, the user himself / herself operates, for example, the numeric keypad 602 in the operation display unit 600, inputs a specified number of staples larger than the number of staples, and sets a user set number larger than the number of ejected sheets. Good. Alternatively, for example, the configuration may be such that the setting is automatically performed by selecting a message such as “Do not perform stapling on all documents” displayed on the display 603.

  As described above, according to the present embodiment, the configuration is simplified because it is determined whether or not the stapling process is performed based on one criterion of the user-set number of sheets depending on whether the number of discharged sheets is larger or smaller. can do. Further, the user himself can set the user set number of sheets. That is, for example, when discharging of recording paper from the image forming unit is completed, if about 10 sheets of recording paper are stacked on the stack portion, stapling processing is desired, or if about 1 or 2 sheets, stapling processing is not performed. The user himself can make a setting such as discharging. Thereby, the stapling process according to the user's preference can be performed.

  Further, even when the number of recording sheets discharged from the image forming unit exceeds the number of staples, the recording sheets are stapled for each number of staples, and the recording sheets bundled in the bundle are sequentially discharged. Go. Therefore, it is not necessary to reduce the image data or the like so that the number of sheets can be stapled or less. Further, when the number of ejected sheets is small, it is possible to perform the stapling process in a format desired by the user, such as discharging a single sheet without performing the stapling process.

[Second Embodiment]
In the present embodiment, the printed recording paper is stapled for each number of sheets (calculated number) according to the number of divisions designated by the user, and the original that has not been stapled is printed according to the user's preference. It is possible to select whether to perform stapling processing or to output as a single sheet as it is.

  FIG. 4 is a flowchart showing the flow of stapling processing of the copying machine according to the second embodiment of the present invention.

  First, after user login (step S101), the user setting storage unit 21 outputs the user set number set by the user to the set number determining unit 25 (step S102).

  Subsequently, the user operates, for example, the numeric keypad 602 on the operation display unit 600, and inputs the number of divisions of the document to be output or the division number (user-specified division number) (step S201). The user-specified number of divisions is output to the calculated number calculation unit 26 in the control unit 20.

  Next, the counter of the document number counting unit 290 is reset (step S103), and the read document determination unit 22 determines whether there is a read document in the document placement unit 201 (step S104). If it is determined in this step that there is a document to be read (Yes in step S104), the document number counting unit 290 reads the document while counting up the number of documents one by one (step S105).

  If there is no read original (No in step S104) by this original reading process (steps S104 and S105), the number of originals counted in the original number counting unit 290 (this number is equal to the total number of ejected sheets) is printed. The data is output to the determination unit 23 and the calculated number calculation unit 26. Subsequently, the process proceeds to a process for determining the number of sheets to be stapled designated by the user.

  First, the calculated number calculation unit 26 obtains a number corresponding to the number of divisions designated by the user, that is, a calculated number (staple number) (step S202). This is obtained as an integer part of the value obtained by dividing the number of originals by the number of user-specified divisions using the user-specified number of divisions and the number of originals received by the calculated number-of-sheets calculation unit 26. For example, when the number of originals is 103 and the user-specified number of divisions is “5”, 103/5 = 20.6, so the calculated number is 20. That is, in this case, the stapling process is performed every 20 sheets, and the remaining three sheets are not stapled in the same steps S113 to S115 as in the first embodiment described above according to the user's preference. . However, this includes the case where the stapling process is not performed.

  Subsequently, the calculated number determination unit 27 compares the calculated number and the stapleable number (step S203). Here, if the calculated number is larger than the possible number of staples, the stapling process cannot be performed, and the user-specified number of divisions is reset (step S204). For example, the display unit 603 may display a message such as “Please reset the number of divisions of the number of documents” and set a new division number from the numeric keypad 602 or the like.

  Then, the reset user-specified division number is output to the calculated number calculation unit 26 in the control unit 20, and the calculated number calculation unit 26 obtains the calculated number again (step S202). Hereinafter, the process of determining the number of staples (steps S202 to S204) is continued until the calculated number of sheets becomes smaller than the number of staples. If the calculated calculated number is smaller than the stapling possible number, that number is adopted as the calculated number and is output to the calculated number determination unit 27 (step S205). Then, the process proceeds to subsequent printing processing and post-processing after printing.

  In this printing process, first, the counter of the printed sheet count unit 190, the loop counter, and the counter of the discharged sheet count unit 590 are reset (steps S106, S501, and S107).

  Next, the printed document determination unit 23 determines whether there is a document to be printed (step S108). If it is determined in step S108 that there is a document to be printed (Yes in step S108), the number of sheets is counted up one by one in the number-of-prints counting unit 190, and printing processing is performed in the image forming unit 100. (Step S109). Then, the printed recording paper is temporarily stocked in the stack unit 503 while the number of sheets is counted up one by one in the discharge number counting unit 590 (step S110).

  Then, the calculated number determination unit 27 compares whether or not the discharged number is equal to the calculated number received from the calculated number calculation unit 26 in S205 (step S206). As a result, if it is determined that the number of ejected sheets is smaller than the calculated number (No in step S206), the process returns to step S108 to further print the document. On the other hand, if it is determined that the calculated number of sheets is equal to the number of discharged sheets (Yes in step S206), the count value of the loop counter is incremented by 1 (counting up) (step S502), and the discharged recording is performed. The paper is stapled by the staple processing unit 504 and discharged to the sorting discharge tray 506 (step S112). Thereafter, the process returns to step S107 to newly print the original, prints (step S109), and discharges to the stack unit 503 (step S110).

  In the middle of these processes, if the print document determination unit 23 determines that there is no document to be printed (No in step S108), it is continuously determined whether the count value (L) of the loop counter is 0 or not. (Step S503). Thereafter, in the same way as in the first embodiment described above, when it is determined that L = 0 (Yes in step S503), normal stapling processing is performed, and the recording sheets bundled in a bundle are stacked. It is discharged from 503 (step S504).

  On the other hand, if it is determined that L = 0 is not satisfied (No in step S503), the set number determination unit 25 continues to compare the number of discharged sheets and the user set number (step S113). As a result, when it is determined that the user set number is larger than the number of discharged sheets (No in step S113), the stapling process is not performed on the recording paper (step S114), and it is determined that the user set number of sheets is equal to or less than the number of discharged sheets. In the case (Yes in step S113), the stapling process is performed (step S115), and the sheets are discharged to the sorting discharge tray 506. With these discharge processes, all processes are completed.

  The calculated number of sheets described in the present embodiment has the same meaning as the designated number of staples in the first embodiment in terms of the number of staples designated by the user. Therefore, the function of the calculated number determination unit 27 in the present embodiment may be configured to be provided in the allowable number determination unit 24.

  In the present embodiment, when the number of originals is 103 and the user-specified number of divisions is “5”, the calculated number is assumed to be 20. However, the present invention is not limited to this, and it is also possible to set the calculated number of sheets to 21 and divide it into five in the form of “21 sheets, 21 sheets, 21 sheets, 21 sheets, 19 sheets”.

  In the present embodiment, it is also possible to discharge all recording sheets without performing the stapling process. In order to execute this, the user himself operates, for example, the numeric keypad 602 on the operation display unit 600, and in step S205, sets a calculated number larger than the stapleable number, and further sets a user set number larger than the discharged number. You only have to set it. Alternatively, for example, the configuration may be such that the setting is automatically performed by selecting a message such as “Do not perform stapling on all documents” displayed on the display 603.

  As described above, according to the present embodiment, it is not necessary to directly specify the number of staples, the staple number is calculated simply by setting the number of divisions, and the stapling process is performed on the recording paper for each staple number. Further, since the number of staples can be set by the user, the staple processing according to the user's preference is possible, and the range of the staple processing is widened.

[Third Embodiment]
In the present embodiment, an example will be described in which stapling processing is performed on a printed recording sheet according to the number of sheets input by the user (hereinafter referred to as the number of sheets input by the user). FIG. 5 is a flowchart showing the flow of the stapling process of the copying machine according to the third embodiment of the present invention.

  First, after user login (step S101), the user setting storage unit 21 outputs the user set number set by the user to the set number determining unit 25 (step S102).

  Subsequently, the user operates, for example, the numeric keypad 602 on the operation display unit 600 and inputs the number of documents to be output one by one (user input number) (step S301). In other words, if the user wants to output by performing stapling processing for each group of manuscripts such as chapters, the number of sheets may be input. For example, when the number of originals is 103, and the user wants to finally discharge 20 sheets, 25 sheets, 22 sheets, 23 sheets, and 13 sheets to the sorting discharge tray 506, the user must What is necessary is just to input "20, 25, 22, 23, 13" etc. Hereinafter, each user input sheet number (stapling sheet number) is referred to as a plurality of user input sheet numbers. The set of user input number is hereinafter referred to as a user input number group. The user input number group is output to and stored in the input number storage unit 28 in the control unit 20.

  Next, the counter of the document number counting unit 290 is reset (step S103), and the read document determination unit 22 determines whether there is a read document in the document placement unit 201 (step S104). If it is determined in this step that there is a document to be read (Yes in step S104), the document number counting unit 290 reads the document while counting up the number of documents one by one (step S105).

  When there is no read document (No in step S104) by this document reading process (steps S104 and S105), the number of documents counted by the document number counting unit 290 is output to the print document determining unit 23. Subsequently, the process proceeds to the subsequent printing process and post-processing after printing.

  In this printing process, first, the counter of the printed sheet count unit 190, the loop counter, and the counter of the discharged sheet count unit 590 are reset (steps S106, S501, and S107).

  Subsequently, a number representing a predetermined user input number in the user input number group stored in the input number storage unit 28 is read and output to the allowable number determination unit 24 (step S302). In the example in which the number of originals is 103 and the user input number group is “20, 25, 22, 23, 13”, when the process first reaches step S302, the user input number “ 20 ”is read and output to the allowable number determination unit 24. Thereafter, every time this step S302 is reached, the user input number of sheets “25”, “22”, “23”, “13” is read in order and output to the allowable number determination unit 24.

  Next, the printed document determination unit 23 determines whether there is a document to be printed (step S108). If it is determined in step S108 that there is a document to be printed (Yes in step S108), the number of sheets is counted up one by one in the number-of-prints counting unit 190, and printing processing is performed in the image forming unit 100. (Step S109). Then, the printed recording paper is temporarily stocked in the stack unit 503 while the number of sheets is counted up one by one in the discharge number counting unit 590 (step S110).

  Then, the allowable number determination unit 24 compares whether or not the discharged number discharged to the stack unit 503 is equal to the user input number (step S303). As a result, if it is determined that the number of discharged sheets is smaller than the number of sheets input by the user (No in step S303), the process returns to step S108 to further print the document. On the other hand, when it is determined that the user input number is equal to the number of discharged sheets (Yes in step S303), the count value of the loop counter is increased by 1 (counting up) (step S502) and then discharged. The recording paper is stapled by the staple processing unit 504 and discharged to the sorting discharge tray 506 (step S112). Thereafter, the process returns to step S107 to newly print the original, prints (step S109), and discharges to the stack unit 503 (step S110).

  At this time, in this embodiment, every time step S302 is reached, the next user input number of sheets is read and the number of sheets is output to the allowable number determination unit 24. Can be obtained.

  In the middle of these processes, if the print document determination unit 23 determines that there is no document to be printed (No in step S108), it is continuously determined whether the count value (L) of the loop counter is 0 or not. (Step S503). Thereafter, in the same way as in the first embodiment described above, when it is determined that L = 0 (Yes in step S503), normal stapling processing is performed, and the recording sheets bundled in a bundle are stacked. It is discharged from 503 (step S504).

  On the other hand, if it is determined that L = 0 is not satisfied (No in step S503), the set number determination unit 25 continues to compare the number of discharged sheets and the user set number (step S113). As a result, when it is determined that the user set number is larger than the number of discharged sheets (No in step S113), the stapling process is not performed on the recording paper (step S114), and it is determined that the user set number of sheets is equal to or less than the number of discharged sheets. In the case (Yes in step S113), the stapling process is performed (step S115), and the sheets are discharged to the sorting discharge tray 506. With these discharge processes, all processes are completed.

  As described above, according to the present embodiment, the staple processing is sequentially performed on the discharged document for each number of staples. Further, since the number of staples can be set by the user, the stapling process according to the user's preference can be performed.

[Fourth Embodiment]
In the first to third embodiments described above, the configuration in which the printing process and the post-processing are performed after all originals have been read has been described. In the present embodiment, differently from that, a configuration will be described in which a printing process and a post-process are executed after the number of documents that can be stapled is read.

  FIG. 6 is a flowchart showing the flow of the stapling process of the copying machine according to the third embodiment of the present invention.

First, after user login (step S101), the user setting storage unit 21 outputs the user set number set by the user to the set number determining unit 25 (step S102).
Next, the loop counter and the counter of the document number counting unit 290 that counts the number of read documents are reset (steps S501 and S103).

  Then, the flag (FLG) is set to an initial value (= 0) (step S401). This flag is a code for designating whether or not the number of discharged sheets discharged to the stack unit 503 is equal to the number of stapleable sheets (staple number). This flag can be stored in, for example, the RAM of the control unit 20 or the like.

  Subsequently, the read document determination unit 22 determines whether or not there is a read document in the document placement unit 201 (step S104). If it is determined in this step that there is a document to be read (Yes in step S104), the document number counting unit 290 reads the document while counting up the number of documents one by one (step S105).

  Then, the number of originals is sent to the allowable number determination unit 24 where it is compared with the number of staples (step S402). If the number of originals is smaller than the number of staples (No in step S402), the originals are continuously read (steps S104 and S105). As a result of continuing the reading of the original, if the number of staples and the number of originals become equal (Yes in step S402), FLG = 1 is set (step S403), and the subsequent printing process and post-printing post-processing are performed. Transition.

  In addition, when reading a document, there may be a case where there is no read document before reaching the number of staples (No in step S104). This occurs, for example, when the number of documents is 30 and the number of staples is 50. At this time, it is determined whether or not the number of read originals is zero (step S404). If the number of read originals is one or more (No in step S404), the process proceeds to the subsequent printing process and post-printing post-process. At this time, since the flag remains at the initial value, FLG = 0. On the other hand, when the number of documents is 0 (Yes in step S404), all the processes are completed.

  That is, FLG = 1 when the number of read originals reaches the stapling number, and FLG = 0 otherwise. In this way, the two are distinguished by the flag.

  In addition, in the case of Yes in step S402 and No in step S404, the number of read originals is sent to the allowable number determination unit 24 and used for the subsequent determination (step S414).

  In the printing process, first, the counter of the printed sheet count unit 190 and the counter of the discharged sheet count unit 590 are reset (steps S106 and S107).

  Next, the printing process is performed in the image forming unit 100 while the number of printed sheets is counted up by the printed sheet counting unit 190 (step S109). Then, the printed recording paper is temporarily stocked in the stack unit 503 while the number of sheets is counted up one by one in the discharge number counting unit 590 (step S110).

  Then, the allowable number determination unit 24 compares whether or not the number of discharged sheets discharged to the stack unit 503 is equal to the number of read originals (step S405). As a result, when it is determined that the number of discharged sheets is smaller than the number of read originals (No in step S405), the process returns to step S109 to print more originals. On the other hand, when it is determined that the number of read originals is equal to the number of discharged sheets (Yes in step S405), the process proceeds to the next flag determination (step S406).

  If it is determined in step S406 that the number of read originals is equal to the number of stapleable sheets (FLG = 1), the count value of the loop counter is increased by 1 (counting up) (step S502), and then the stack unit 503. The recording paper discharged to the printer is stapled by the staple processing unit 504 and discharged to the sorting discharge tray 506 (step S407). Then, the process returns to step S103 to newly print the original, and the original reading process is continued.

  Here, for example, consider a case where the number of documents is 200 and the number of staples is 50. If the stapling process in step S407 is performed four times, there is no document remaining to be read. Therefore, it is determined that there is no read original (No in step S104), and then it is determined that the number of originals read is zero (Yes in step S404). Thereby, the printing process and the stapling process are completed.

  On the other hand, if the number of originals read is smaller than the number of stapleable sheets (FLG = 0) in step S406, it is subsequently determined whether the count value (L) of the loop counter is 0 (step S503). Thereafter, in the same way as in the first embodiment described above, when it is determined that L = 0 (Yes in step S503), normal stapling processing is performed, and the recording sheets bundled in a bundle are stacked. It is discharged from 503 (step S504).

  On the other hand, if it is determined that L = 0 is not satisfied (No in step S503), the set number determination unit 25 continues to compare the number of discharged sheets and the user set number (step S113). As a result, when it is determined that the user set number is larger than the number of discharged sheets (No in step S113), the stapling process is not performed on the recording paper (step S114), and it is determined that the user set number of sheets is equal to or less than the number of discharged sheets. In the case (Yes in step S113), the stapling process is performed (step S115), and the sheets are discharged to the sorting discharge tray 506. With these discharge processes, all processes are completed.

  In this embodiment, the stapling process is performed for each number of sheets designated by the user (stapling number of sheets) instead of the stapling possible number, and the remaining document without the stapling process is subjected to the stapling process according to the user's preference. It is also possible to select whether to output as a single sheet as it is. In order to execute this, after the user logs in (step S <b> 101), the stapling designated number (stapling number) stored in the user setting storage unit 21 may be output to the allowable number determination unit 24. Alternatively, after the user logs in (step S101), for example, the user may operate the numeric keypad 602 on the operation display unit 600 to input the designated number of staples.

  Thus, in step S402, it is compared whether or not the number of read originals is equal to the specified number of staples. As a result, the printed discharged document is stapled for each specified number of staples, and the document remaining without being stapled can be selected as to whether or not to perform the staple process according to the determination in step S113.

  As described above, according to the present embodiment, since reading and printing of a document are performed for each predetermined number of staples (staplable number or staple specified number), it is determined whether there is a document to be printed. There is no need to do. Therefore, it is not necessary to provide a determination unit having the function, and the configuration can be simplified.

[Fifth Embodiment]
In the present embodiment, an example in which a printing process is performed every time one original is read will be described. FIG. 7 is a flowchart showing the flow of the stapling process of the copying machine according to the fifth embodiment of the present invention.

  First, after user login (step S101), the user setting storage unit 21 outputs the user set number set by the user to the set number determining unit 25 (step S102).

  Next, the loop counter and the counter of the document number counting unit 290 that counts the number of read documents are reset (steps S501 and S103). Further, the counter of the printed sheet count unit 190 and the counter of the discharged sheet count unit 590 are reset (steps S106 and S107).

  Subsequently, the read document determination unit 22 determines whether or not there is a read document in the document placement unit 201 (step S104). If it is determined in this step that there is a document to be read (Yes in step S104), the document number counting unit 290 reads the document while counting up the number of documents one by one (step S105).

  Next, the printing process is performed in the image forming unit 100 while the number of printed sheets is counted up by the printed sheet counting unit 190 (step S109). Then, the printed recording paper is temporarily stocked in the stack unit 503 while the number of sheets is counted up one by one in the discharge number counting unit 590 (step S110).

  Then, in the allowable number determination unit 24, it is compared whether or not the discharged number is equal to the stapling possible number (staple number) determined by the mechanical performance of the post-processing apparatus (step S111). As a result, if it is determined that the number of discharged sheets is smaller than the number of staples (No in step S111), the process returns to step S104 to read the original further. On the other hand, if it is determined that the number of stapleable sheets is equal to the number of ejected sheets (Yes in step S111), the count value of the loop counter is incremented by 1 (counting up) (step S502) and then ejected. The recording paper is stapled by the staple processing unit 504 and discharged to the sorting discharge tray 506 (step S112). Thereafter, in order to newly read the original, the process returns to step S103, and the processing after step S103 is continued.

  In the middle of these processes, when the read original determination unit 22 determines that there is no read original (No in step S104), it is subsequently determined whether or not the count value (L) of the loop counter is zero (step S104). S503). Thereafter, in the same way as in the first embodiment described above, when it is determined that L = 0 (Yes in step S503), normal stapling processing is performed, and the recording sheets bundled in a bundle are stacked. It is discharged from 503 (step S504).

  On the other hand, if it is determined that L = 0 is not satisfied (No in step S503), the set number determination unit 25 continues to compare the number of discharged sheets and the user set number (step S113). As a result, when it is determined that the user set number is larger than the number of discharged sheets (No in step S113), the stapling process is not performed on the recording paper (step S114), and it is determined that the user set number of sheets is equal to or less than the number of discharged sheets. In the case (Yes in step S113), the stapling process is performed (step S115), and the sheets are discharged to the sorting discharge tray 506. With these discharge processes, all processes are completed.

  In this embodiment, the stapling process is performed for each number of sheets designated by the user (stapling number of sheets) instead of the stapling possible number, and the remaining document without the stapling process is subjected to the stapling process according to the user's preference. It is also possible to select whether to output as a single sheet as it is. In order to execute this, after the user logs in (step S <b> 101), the staple designated number stored in the user setting storage unit 21 may be output to the allowable number determination unit 24. Alternatively, after the user logs in (step S101), for example, the user may operate the numeric keypad 602 on the operation display unit 600 to input the designated number of staples.

  Thereby, in step S111, it is compared whether or not the number of discharged sheets is equal to the designated number of staples. As a result, the printed discharged document is stapled for each specified number of staples, and the document remaining without being stapled can be selected as to whether or not to perform the staple process according to the determination in step S113.

  In the present embodiment, it is also possible to discharge all recording sheets without performing the stapling process. In order to execute this, the user himself / herself operates, for example, the numeric keypad 602 in the operation display unit 600, inputs a specified number of staples larger than the number of staples, and sets a user set number larger than the number of ejected sheets. Good. Alternatively, for example, the configuration may be such that the setting is automatically performed by selecting a message such as “Do not perform stapling on all documents” displayed on the display 603.

  In the embodiment described above, the configuration including the document number counter (document detection switch 206) for counting the number of documents has been described. According to this configuration, it is possible to determine the presence or absence of a paper jam or the like by comparing the number of documents with the number of printed sheets or the number of sheets discharged to the stack unit 503. However, in order to obtain a simple configuration, a configuration in which the document number counter is omitted is also possible.

  As described above, according to the present embodiment, since reading and printing of a document is performed for each sheet, it is not necessary to determine whether there is a document to be printed. Therefore, it is not necessary to provide a determination unit having the function, and the configuration can be simplified.

[Other preferred embodiments]
The present invention is not limited to the above-described embodiment, and for example, the following aspects can be employed.

  (A) In the above embodiment, a copying machine has been described as an example of an image forming apparatus. However, the present invention is not limited to this, and is suitably used for other image forming apparatuses such as a printer and a facsimile machine. be able to.

  (B) A copying machine as an example of an image forming apparatus according to an embodiment of the present invention is shown in FIG. 1, in which a post-processing unit 500 that performs stapling processing is externally provided in the main body 10 of the copying machine. It was. However, the present invention is not limited to this, and a configuration in which the post-processing unit 500 is provided inside the main body 10 of the copying machine may be employed.

  (C) In the embodiment described above, both the recording paper subjected to the stapling process and the recording paper not subjected to the stapling process are discharged to the sorting discharge tray 506. However, the present invention is not limited thereto, and may be configured to be discharged to the non-sort discharge tray 508 regardless of whether or not the stapling process is performed, or the stapling recording paper is not stapled. You may comprise so that a recording paper may be discharged to a separate discharge tray.

  (D) The embodiment described above can be executed as unique to each model of the image forming apparatus, or one image forming apparatus can switch and execute the staple processing according to the plurality of embodiments. You can also. In the latter case, for example, it may be configured such that the user can operate the display unit 603 in the operation display unit 600 and specify the staple processing according to which embodiment.

  (E) It is preferable that the position stapled by the staple processing unit 504 (the position of the binding needle) is movable as long as at least one position of the recording paper can be stapled. Further, it is preferable that the stapling position can be set by the user by operating the display 603 or the like in the operation display unit 600.

  (F) In the above-described embodiment, the case where the stapling process is performed as the post-processing has been described. A configuration may be employed in which punching is further performed when the sheet is discharged.

  (G) In the above embodiment, the configuration including the print number counter 113 that counts the number of prints has been described. According to this configuration, it is possible to determine whether there is a paper jam or the like when the recording paper is discharged from the image forming apparatus to the post-processing apparatus by comparing the number of printed sheets with the number of discharged sheets to the stack unit 503. . However, in order to obtain a simple configuration, a configuration in which the print number counter 113 is omitted is also possible.

  (H) In the above embodiment, the configuration has been described in which the control unit 20 of the image forming apparatus has functional units such as the allowable number determination unit 24 and the set number determination unit 25. However, a configuration in which these functional units are provided in the post-processing device is also possible. With such a configuration, it is possible to perform stapling processing or the like by the post-processing apparatus alone, and it is possible to provide a highly versatile post-processing apparatus that does not depend on the image forming apparatus.

  (I) In the above embodiments, the recording paper bundle is stapled when it is determined that the number of ejected sheets is equal to or greater than the user set number, and when it is determined that the number of ejected sheets is less than the user set number, The stapling is not performed. However, the present invention is not limited thereto, and stapling of the recording sheet bundle is performed when it is determined that the number of ejected sheets is larger than the user set number, and stapling of the recording sheet bundle is performed when it is determined that the number of ejected sheets is equal to or less than the user set number. It is good also as a structure which does not perform.

  (J) In the above embodiment, it is assumed that the user-set number set by the user is equal to or less than the stapling possible number. For example, if the user has set a user-set number greater than the number of staples that can be stapled, for example, “Please set a smaller number of user-set items on the display 603. (The number of staples that can be stapled on this machine is 50.” .) ”Or the like may be displayed so that the user can input again.

1 is a schematic cross-sectional view illustrating an internal configuration of a copier that is an example of an image forming apparatus according to an embodiment of the present invention. 1 is a functional block diagram illustrating a schematic configuration of a copier that is an example of an image forming apparatus according to an embodiment of the present invention. 3 is a flowchart showing a flow of stapling processing of the copying machine according to the first embodiment of the present invention. 6 is a flowchart showing a flow of stapling processing of a copying machine according to a second embodiment of the present invention. 10 is a flowchart showing a flow of a stapling process of a copying machine according to a third embodiment of the present invention. 10 is a flowchart showing a flow of stapling processing of a copying machine according to a fourth embodiment of the present invention. 10 is a flowchart showing a flow of a stapling process of a copying machine according to a fifth embodiment of the present invention.

Explanation of symbols

1 Copying machine (image forming device)
DESCRIPTION OF SYMBOLS 20 Control part 30 Image memory | storage part 21 User setting memory | storage part 22 Read original deciding part 23 Print original deciding part 24 Permissible number judging part 25 Set number judging part 26 Calculated number calculating part 27 Calculated number judging part 28 Calculated number judging part 28 Input number storing part 29 Staple control Section 190 Number of printed sheets count section 290 Number of document count sections 500 Post-processing section 503 Stack section (recording paper tray, intermediate stack)
504 Staple processing unit 590 Ejected sheet count unit 591 Recording paper ejection unit 602 Numeric keypad 603 Display

Claims (8)

A document number counting means for counting the number of scanned documents;
A stack unit for positioning and stacking recording sheets discharged from an image forming unit that transfers an image of a document to the recording sheet;
Counting means for counting the number of discharged recording sheets stacked in the stack portion;
An allowable number determination means for comparing the number of discharged sheets counted by the counting means with a preset number of staples;
A stapling unit that performs a stapling process on the recording sheets stacked on the stack unit when the allowable number determination unit determines that the discharged number and the staple number are equal;
A recording paper discharging means for discharging the recording paper subjected to the stapling process from the stack part when the stapling means performs a stapling process on the recording paper stacked in the stack part;
When the number of documents to be read counted by the document number counting unit is larger than the number of staples and the discharge of the recording paper from the image forming unit is completed, the number of ejected sheets counted by the counting unit A set number determination unit that compares the set number of sheets and determines whether or not to perform stapling;
A stapling control means for controlling the stapling means when the stapling processing is determined by the set number determining means, and for performing stapling processing on the recording sheets stacked on the stack portion;
An image forming apparatus comprising:   The set number determining means determines that the stapling process is performed when the discharged number is equal to or larger than the set number, and determines that the stapling process is not performed when the discharged number is smaller than the set number. The image forming apparatus according to 1.   The image forming apparatus according to claim 1, further comprising user setting means capable of setting at least the set number of sheets.   The image forming apparatus according to claim 3, wherein the number of staples is configured to be set by the user setting unit. The user setting means is further configured to set the number of divisions,
5. The image according to claim 3, further comprising a calculated sheet number calculating unit that calculates the number of staples based on the number of read originals and the division number set by the user setting unit. Forming equipment. An input number storage means for storing a plurality of staple numbers set by the user setting means;
Until the discharge of the recording paper from the image forming unit is completed, the allowable number determining unit determines that the one stapled number read in the predetermined order from the input number storing unit is equal to the discharged number. A series of processes in which the stapling means performs stapling on the recording paper stacked in the stack section and the recording paper discharge means discharges the recording paper on which the stapling processing has been performed is stored in the input number storage means. The image forming apparatus according to claim 4, wherein the image forming apparatus repeats the number of staples corresponding to the number of staples.   7. The image forming apparatus according to claim 3, further comprising user setting storage means for storing at least the set number of sheets set by the user setting means for each user. A document number counting means for counting the number of scanned documents;
An image forming means for transferring an image of a document onto a recording paper, and connectable to a main body of an image forming apparatus,
A stack unit for positioning and stacking recording sheets discharged from the image forming unit;
Counting means for counting the number of discharged recording sheets stacked in the stack portion;
An allowable number determination means for comparing the number of discharged sheets counted by the counting means with a preset number of staples;
A stapling unit that performs a stapling process on the recording sheets stacked on the stack unit when the allowable number determining unit determines that the discharged number is equal to the staple number;
When the stapler performs a stapling process on the recording paper stacked on the stack unit, the postprocessing apparatus includes a recording paper discharge unit that discharges the recording paper on which the stapling process has been performed from the stack unit. And
The main body of the image forming apparatus is
When the number of read originals counted by the document number counting unit is larger than the number of staples and the discharge of the recording paper from the image forming unit is completed, the number of discharges counted in advance by the counting unit A set number determination unit that compares the set number of sheets and determines whether or not to perform stapling;
A stapling control unit configured to control the stapling unit and perform the stapling process on the recording sheets stacked on the stack unit when the stapling process is determined to be performed by the set number determination unit. Post-processing device to do.

Images