JP2015093742A - Paper feeder, image formation apparatus, and control method and program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which a user cannot know whether a large-sized form of size A3, ledger size, etc., is loaded since the remaining amounts of a right tray and a left tray of a paper feeder are displayed individually even when the large-sized form is loaded in both the right and left trays in a straddling state.SOLUTION: First and second detection parts detect whether forms are loaded in first and second loading parts where forms of predetermined size can be loaded. It is determined whether forms larger than the predetermined size are loaded in the first and second loading parts in a straddling state. When it is determined that the large-sized forms are loaded, the remaining amount of forms is displayed based upon detection by one of the first and second detection parts, and when it is determined that no large-sized form is loaded, on the other hand, the remaining amounts of forms are displayed based upon detection by the first and second detection parts respectively.

Description

  The present invention relates to a sheet feeding device, an image forming apparatus, and a control method and program thereof.

  An image forming apparatus that forms an image on paper has been speeded up due to technological advancement, and a mechanism for stacking large-capacity paper and a paper-loading apparatus that stacks paper fed by the image forming apparatus and printing There is a need for a mechanism that can replenish paper.

  As a technique relating to such a large capacity sheet feeding apparatus, there is one described in Patent Document 1, for example. In the paper feeder disclosed in Patent Document 1, two paper stacking units are arranged in parallel, and when the first paper stacking unit runs out of paper, the paper stored in the second paper stacking unit is automatically transferred to the first paper. Transfer to the loading section. A paper feeding device is described in which paper can be stacked twice as much as a normal paper feeding tray by continuously feeding paper. This conventional paper feeding device will be described with reference to FIG.

  FIG. 10 is a cross-sectional view illustrating a schematic configuration of a conventional paper feeding device. The sheets P stacked on the right tray 1001 are fed one by one to the image forming unit 1004 by the rotation of the feeding roller. When there is no more paper P stacked on the bottom plate 1006 of the right tray 1001, the bottom plate 1006 is lowered to the lower limit position, and after reaching the lower limit position, the paper P on the left tray 1002 is moved to the right by the transfer fence 1009. Transfer to tray 1001. When the transfer of the paper P is thus completed, the bottom plate 1006 is raised and the paper feed from the right tray 1001 is resumed.

  Patent Document 2 describes a paper feeding device that can feed a large size paper by simultaneously raising the left and right trays when a large size paper such as A3 is stacked across the left and right trays. Has been.

Japanese Patent Laid-Open No. 11-246058 JP-A-11-240630

  However, in the conventional image forming apparatus, the remaining amount is displayed separately for the right tray and the left tray even when large size sheets such as A3 size and leisure size are stacked across the left and right trays of the sheet feeding device. ing. For this reason, from this remaining amount display, the user cannot identify whether or not a large-size sheet is loaded, and may mistakenly recognize that a small-size sheet is loaded. In addition, there is a problem that the remaining amount of paper cannot be accurately notified regarding the remaining amount of paper.

  An object of the present invention is to solve the above-mentioned problems of the prior art.

  A feature of the present invention is to provide a technology that allows a user to accurately recognize the state of a sheet stored therein.

In order to achieve the above object, a sheet feeding apparatus according to an aspect of the present invention has the following configuration. That is,
First and second stacking means each capable of stacking sheets of a predetermined size;
First and second detection means for detecting the presence or absence of the respective sheets of the first and second stacking means;
A discriminating unit for discriminating whether or not a sheet having a size larger than the predetermined size is stacked across the first and second stacking units;
If the determination means determines that the large size paper is loaded, the remaining amount of paper is displayed based on the detection of one of the first and second detection means, and the determination means is the large Control means for controlling to display the remaining amount of paper based on the detection of each of the first and second detection means when it is determined that no size paper is loaded. To do.

  According to the present invention, by changing the display mode of the remaining amount of paper between when the paper of a predetermined size is stacked on the two stacking units and when the paper of the predetermined size is stacked, There is an effect that the user can accurately grasp the state.

1 is a block diagram showing a configuration of an image forming apparatus according to an embodiment of the present invention. 1 is a configuration diagram showing an internal structure of an image forming apparatus according to an embodiment. FIG. 3 is a diagram illustrating a configuration of an optional sheet feeding unit according to the embodiment. FIG. 6 is a diagram illustrating a state in which the right tray is out of paper and the sheet S-2 placed in the left tray is moved to the right tray in the optional paper feeding unit according to the embodiment. FIG. 6 is a diagram illustrating a state in which a large size sheet S-3 is placed across the right tray and the left tray in the optional sheet feeding unit according to the embodiment. FIG. 3 is a top view of an operation unit of the image forming apparatus according to the embodiment. FIGS. 5A and 5B are diagrams illustrating screen examples displayed on the operation unit, where FIG. 5A illustrates a user mode setting screen, FIG. 5B illustrates a paper size setting screen, and FIG. FIG. 7A is a diagram illustrating an example of a paper information screen displayed when the paper information key of the operation unit of the image forming apparatus according to the embodiment is pressed, and a display form of an icon indicating the remaining amount of paper in the optional paper feed cassette. FIG. 9 is a flowchart for explaining control for displaying an icon indicating a remaining amount of paper in an optional paper feed cassette when a paper information key is pressed in the image forming apparatus according to the embodiment. Sectional drawing which shows schematic structure of the conventional paper feeder.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments do not limit the present invention according to the claims, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the present invention. .

  FIG. 1 is a block diagram illustrating a configuration of an image forming apparatus according to an embodiment of the present invention.

  The reader unit 101 optically reads an image of a document and outputs the image data. The reader unit 101 includes a scanner unit 111 that reads a document, and a document feeding unit (DF unit) 112 that transports the document to the scanner unit 111.

  The printer unit 102 conveys a sheet (sheet), prints image data as a visible image thereon, and discharges the sheet outside the apparatus. The printer unit 102 includes a paper feeding unit 122 having a plurality of types of paper cassettes, and a marking unit 121 for transferring and fixing image data onto paper. Furthermore, the paper feeding device according to the embodiment includes a paper discharge unit 123 that discharges printed paper to the outside of the apparatus, and an optional paper feed unit 124 having a paper deck on which a large capacity of paper can be stacked.

  The control unit 103 includes a CPU 131, an image memory 132, a nonvolatile memory 134, a RAM 135, a ROM 136, and an operation unit 104. The control unit 103 is electrically connected to the reader unit 101 and the printer unit 102. Then, the CPU 131 of the control unit 103 controls the reader unit 101 to write the image data of the document in the image memory 132, and controls the printer unit 102 to provide a copy function for printing the image data in the image memory 132 on the paper. . Further, various adjustment values are stored in the nonvolatile memory 134. The RAM 135 is used as a work area for the CPU 131, and the ROM 136 stores a control program for the CPU 131.

  The operation unit 104 includes a display unit, a touch panel input unit attached on the display unit, and a plurality of hard keys. A signal input by the touch panel or the hard key is transmitted to the CPU 131, and the display unit displays the function of the image forming apparatus, image data, and the like.

  FIG. 2 is a configuration diagram illustrating an internal structure of the image forming apparatus according to the embodiment. As described above, the image forming apparatus includes the reader unit 101, the printer unit 102, the paper discharge unit 123, and the optional paper supply unit 124.

  First, the configuration and operation of the reader unit 101 will be described.

  The documents D placed on the document feeding tray 205 of the document feeding unit 111 are separated one by one by the separation roller 201 and conveyed onto the platen glass 211 by the conveyance roller 202. The document D that has passed over the platen glass 211 is discharged to the discharge tray 204 by the rotation of the discharge roller 203.

  The document D passing over the platen glass 211 is irradiated by the light source 212, and the light reflected by the document is read as image data by the CCD image sensor 214 via the lens system 213. The image data read by the CCD image sensor 214 is once transferred to the control unit 103 and stored in the image memory 132.

  Next, the configuration and operation of the printer unit 102 will be described.

  In the image forming unit 220, image data stored in the image memory 132 is sent to the laser output unit 221, and laser light based on the image data is output from the laser output unit 221. The output laser light passes through the imaging lens system 222, is reflected by the mirror 223, and converges and forms an image on the photosensitive member 224. The photosensitive drum 224 is charged in advance by a primary charger 225, and an electrostatic latent image is formed by irradiation with light. Next, the electrostatic latent image is developed by a developing device 226 to form a toner image. The

  The paper feeding unit 122 and the optional paper feeding unit 124 stack the recording paper S and the recording paper S-1 on the manual feed 237, the paper feeding cassettes 232 and 233, and the paper feeding deck (right tray) 241. In addition, 242 is a left tray and 243 is a moving tray. These will be described later with reference to FIG.

  The recording paper S and the recording paper S-1 are conveyed to the registration rollers 231 by the paper feed rollers 234, 235, 238, and 244 and the conveyance rollers 236, and the skew is corrected by the registration rollers 231. Further, the image forming process is timed and sent to the image forming unit 220. In the image forming unit 220, the toner image on the photosensitive member 224 is transferred to the recording paper S sent by the charger 237. The recording paper S on which the toner image is transferred in this manner is separated from the photoreceptor 224 by the separation charger 238. The separated recording sheet S is conveyed to the fixing unit 250 by the conveying unit 239, and the toner image is fixed to the recording sheet S by heat and pressure in the fixing unit 250. The recording sheet S on which the image has been fixed in this manner is conveyed to the paper discharge unit (post-processing unit) 123 by the rotation of the paper discharge roller 251.

  The recording paper S transported to the paper discharge unit 123 is transported to the processing tray 263 by the rotation of the transport rollers 261 and 262. The recording sheets S sequentially conveyed to the processing tray 263 are aligned with the recording sheet bundle by the alignment member 264. The recording sheet bundle thus aligned is stapled by a stapling unit (not shown) as necessary in accordance with a designation from the user. Then, it is discharged to the stacking tray 266 by the bundle discharge roller 265. Thus, one copy of the original D is completed, and this operation is repeated until the number of copies desired by the user is reached.

  Next, the configuration and operation of the optional sheet feeding unit 124 according to the embodiment will be described with reference to FIGS.

  FIG. 3 is a diagram illustrating a configuration of the optional sheet feeding unit 124 according to the embodiment.

  FIG. 3 shows a state in which recording sheets S-1 and S-2 having a small size such as A4 size or letter size are placed on the right tray 241 and the left tray 242. Wire ropes 309a and 309b are fixed to the right tray 241, and are connected to the winding shaft 307 via wire pulleys 305a and 305b. The right tray 241 is raised by winding the wire ropes 309a and 309b with the winding shaft 307, and the right tray 241 is lowered by pulling out the wire ropes 309a and 309b. Similar to the right tray 241, wire ropes 310a and 310b are fixed to the left tray 242, and are connected to the winding shaft 308 via wire pulleys 306a and 306b. The left tray 242 is raised by winding the wire ropes 310a and 310b with the winding shaft 308, and the left tray 242 is lowered by pulling out the wire ropes 310a and 310b. The right tray 241 and the left tray 242 are provided with paper sensors 314 and 315 that detect the presence or absence of paper on each tray, and detect that the weights of the recording papers S-1 and S-2 are lost. Then, a paper out signal is transmitted to the CPU 131 of the control unit 103.

  FIG. 4 shows an optional paper feeding unit 124 according to the embodiment, in which the right tray 241 is in a no-paper state, and a small size paper S-2 such as A4 size or letter size placed in the left tray 242 is placed in the right tray 241. It is a figure which shows the state which transferred. Parts common to those in FIG. 3 are denoted by the same symbols, and description thereof is omitted.

  A wire rope 313 a is fixed to the moving tray 243 and is connected to the moving tray 243 again via a wire pulley 311 a and a winding cram 312. By moving the wire rope 313a with the winding shaft 312, the moving tray 243 moves to the right or left.

  FIG. 5 is a diagram illustrating a state in which a large-size sheet S-3 such as A3 size or leisure size is placed across the right tray 241 and the left tray 242 in the optional sheet feeding unit 124 according to the embodiment. Parts common to those in FIG. 3 are denoted by the same symbols, and description thereof is omitted.

  By rotating the winding shafts 307 and 308 simultaneously, the right tray 241 and the left tray 242 can be raised or lowered at the same height.

  FIG. 6 is a top view of the operation unit 104 of the image forming apparatus according to the embodiment.

  The display unit 600 has a touch panel function, and main mode setting and status display screens are displayed here. The numeric keypad 601 is used to input a numerical value from 0 to 9. For example, when the image forming apparatus is managed by each department, the ID key 602 is used when inputting the department number and the password mode. A reset key 603 is a key for resetting a set mode. A guide key 604 is a key for displaying an explanation screen in each mode. A user mode key 605 is a key for entering the user mode screen. By pressing the user mode key 605, the user can set a paper size to be described later. The interrupt key 606 is a key for instructing an interrupt copy. A start key 607 is a key for starting an operation such as copying, and a stop key 608 is a key for stopping a job such as a copy job being executed. When the soft power SW 609 is pressed, the backlight of the display unit 600 is turned off and the apparatus shifts to a power saving state. When the power saving key 610 is pressed, the state shifts to the power saving state, and when the power saving key 610 is pressed again, the power saving state is restored.

  A screen contrast key 614 is a key for adjusting the contrast of the display unit 600. When the counter confirmation key 615 is pressed, a count screen for displaying the total number of copies used so far is displayed on the display unit 600. The LED 616 is lit when image data is stored in the image memory 132 during execution of a job. The error LED 617 is lit when the apparatus is in an error state due to jamming, door opening, or the like. The power LED 618 is lit when the main switch of the apparatus is ON. When the user touches the paper information key 619, the paper size, type, and remaining amount are displayed on the display unit 600.

  Next, with reference to FIG. 7, a method for setting the paper size loaded on the optional paper feeding unit 124 will be described.

  When the user presses the user mode key 605 of the operation unit 104, a user mode setting screen shown in FIG. 7A is displayed on the display unit 600. A paper size setting button 701 is a button for the user to set a paper size. A return button 702 is a key for causing the display unit 600 to display a screen before shifting to the user mode setting screen.

  FIG. 7B is a diagram illustrating an example of a paper size setting screen displayed when the paper size setting button 701 is pressed on the screen of FIG.

  In this paper size setting screen, an optional paper feeding unit button 704 is displayed. When the user presses this button 704, a paper size designation screen shown in FIG. 7C is displayed. The user can set the paper size of the optional paper feed cassette 124 from this paper size designation screen. A return button 705 is a button for returning to the user mode setting screen of FIG.

  On the screen for specifying the paper size of the optional paper feed cassette 124 shown in FIG. 7C, the paper size loaded on the optional paper feed cassette 124 can be designated by pressing one of the buttons 707 to 712. The specified paper size is stored in a paper size storage area (not shown) of the nonvolatile memory 134. A return button 713 is a button for returning to the paper size setting screen of FIG.

  In FIG. 7C, the button 707 can be designated as A4 size, the button 708 as letter size, the button 709 as B5 size, the button 710 as A3 size, the button 711 as leisure size, and the button 712 as legal size.

  As described above, when the user designates in advance the paper size to be loaded on the optional paper feed cassette 124 from the operation screen shown in FIGS. The paper size can be determined.

  Next, with reference to FIG. 8, a method for displaying the remaining amount of paper in each paper feed slot will be described.

  FIG. 8A is a diagram illustrating an example of a paper information screen displayed when the paper information key 619 of the operation unit 104 of the image forming apparatus according to the embodiment is pressed.

  An area 802 is an area for displaying paper information, and 803 to 806 are icons indicating the remaining amount of paper. An icon 803 is a manual feed 237, an icon 804 is an icon indicating the remaining amount of paper in the paper feed cassette 232, an icon 805 is an icon indicating the remaining amount of paper in the paper supply cassette 233, and an icon 806 is an icon indicating the remaining amount of paper in the optional paper feed cassette 124. is there. An OK button 807 is a button for closing this paper information screen.

  In FIG. 8A, it can be seen that there is no paper in the manual feed 237, and the remaining amount of thick paper in the paper feed cassette 233 is about half of the full state. In the optional paper feed cassette 124, it can be seen that A4 size paper is loaded on the right tray 241 and the left tray 242 in a nearly full state.

  FIG. 8B is a diagram illustrating a display form of an icon (graphic) 806 indicating the remaining amount of paper in the optional paper feed cassette 124.

  8B, reference numerals 811 to 815 denote display examples of an icon 806 indicating the remaining amount of paper in the optional paper feed cassette 124. The icon 811 is displayed when the paper is smaller than a predetermined size (for example, in a state where any one of buttons 707, 708, and 709 corresponding to a small size is designated on the paper size designation screen in FIG. 7C). Equivalent to. The right tray 241 and the left tray 242 show a state where sheets are stacked.

  An icon 812 indicates a case where a sheet having a size equal to or smaller than a predetermined size is designated. In this case, a sheet is stacked on the right tray 241 and a sheet is not stacked on the left tray 242. An icon 813 indicates a state in which a sheet having a size equal to or smaller than a predetermined size is designated and sheets are not stacked on both the right tray 241 and the left tray 242.

  The icon 814 corresponds to the case of a recording sheet having a size equal to or larger than a predetermined size (for example, a state in which any of buttons 710, 711, and 712 is instructed on the sheet size change screen in FIG. 7C). Here, a state in which sheets are stacked across the right tray 241 and the left tray 242 is shown. The icon 815 is an icon indicating that a sheet having a size equal to or larger than a predetermined size is designated and no sheets are stacked on the right tray 241 and the left tray 242.

  FIG. 9 shows an icon 806 indicating the remaining amount of paper in the optional paper feed cassette 124 in the paper information screen of FIG. 8A when the paper information key 619 is pressed in the image forming apparatus according to the embodiment. It is a flowchart explaining the control. The processing shown in this flowchart is realized by the CPU 131 executing a program stored in the ROM 136.

  When the user presses the paper information key 619 of the operation unit 104, in step S901, the CPU 131 acquires the paper size specified in the optional paper feed cassette 124 stored in the paper size storage area (not shown) of the nonvolatile memory 134. . The process advances to step S902, and the CPU 131 acquires a signal from the paper sensor 314 of the right tray 241 and advances to step S903. In step S903, the CPU 131 determines whether the paper size acquired in step S901 is a large size (large size) that is equal to or larger than a predetermined size. If the size is large, the process proceeds to step S904, and if not, the process proceeds to step S907. In step S904, the CPU 131 proceeds to step S905 if the signal from the sheet sensor 314 acquired in step S902 does not indicate that there is no sheet, and proceeds to step S906 if it indicates that there is no sheet. In step S <b> 905, the CPU 131 displays the icon 814 illustrated in FIG. 8B at the position of the icon 806. On the other hand, in step S <b> 906, the CPU 131 displays an icon 815 illustrated in FIG. 8B at the position of the icon 806.

  Thus, the icons 814 and 815 allow the user to identify whether a large size paper is designated in the optional paper feed cassette 124 and whether there is paper in the optional paper feed cassette 124.

  On the other hand, when the paper size is not the large size, the CPU 131 acquires a signal from the paper sensor 315 of the left tray 242 in S907, and proceeds to S908. If the CPU 131 determines in step S908 that the signal from the paper sensor 314 acquired in step S902 does not indicate that there is no paper, the process proceeds to step S909. If the CPU 131 determines that there is no paper, the process proceeds to step S912. In step S909, the CPU 131 proceeds to step S910 if the signal of the paper sensor 315 acquired in step S907 does not indicate that there is no paper, and proceeds to step S911 if it indicates that there is no paper. In step S <b> 910, the CPU 131 displays the icon 811 in FIG. 8B at the position of the icon 806 because both the right tray 141 and the left tray 242 are in a state where paper is present. On the other hand, in step S911, since the left tray 242 is out of paper, the CPU 131 displays the icon 812 in FIG.

  In step S912, the CPU 131 proceeds to step S911 if the signal from the sheet sensor 315 acquired in step S907 does not indicate that there is no sheet, and proceeds to step S913 if it indicates that there is no sheet. In S913, the CPU 131 displays the icon 813 in FIG. 8B at the position of the icon 806 because both the right tray 241 and the left tray are out of paper.

  As described above, according to the present embodiment, when small size paper is stacked, the remaining amount of paper in the left and right trays is displayed separately, and when large size paper is stacked, One remaining amount is displayed in the tray. As a result, the user can accurately grasp the state of the paper in the paper feed cassette.

  In the embodiment, the display of the remaining amount of paper is displayed in two states, that is, no paper or there is paper, but the icon may be changed so as to indicate the paper presence state step by step.

  In this embodiment, the icon 812 is displayed when the right tray 241 is out of paper and the left tray 242 is out of paper. However, since the paper in the left tray 242 is being moved to the right tray 241 at this time, the paper An icon indicating that is moving may be displayed.

  In addition, when a large size sheet is designated and the detection results of the sheet sensors 314 and 315 of the left and right trays 241 and 242 are different from each other, for example, in the state of FIG. May be different from each other. Alternatively, there is a possibility that the user specifies the paper size via the screen of FIG.

  Therefore, in such a case, it is desirable to display a message or the like prompting the user to confirm the positions of the left and right trays 241 and 242 or the paper size setting.

<Other embodiments>
The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

  In addition, a control circuit designed to execute processing based on each flowchart may be used instead of the CPU 131.

Claims (11)

First and second stacking means each capable of stacking sheets of a predetermined size;
First and second detection means for detecting the presence or absence of the respective sheets of the first and second stacking means;
A discriminating unit for discriminating whether or not a sheet having a size larger than the predetermined size is stacked across the first and second stacking units;
If the determination means determines that the large size paper is loaded, the remaining amount of paper is displayed based on the detection of one of the first and second detection means, and the determination means is the large Control means for controlling to display the remaining amount of paper based on the detection of each of the first and second detection means when it is determined that the size paper is not stacked;
A sheet feeding device comprising:   The control means changes the icon when the determination means determines that the large size paper is stacked and when the determination means determines that the large size paper is not stacked. The sheet feeding device according to claim 1, wherein the sheet feeding device is displayed. When the determining means determines that the large size paper is stacked, the control means displays the remaining amount of paper using a graphic representing the paper of the predetermined size or more,
2. The control unit according to claim 1, wherein when the determination unit determines that the large-size sheet is not stacked, the remaining amount of the sheet is controlled using a graphic representing the predetermined-size sheet. The sheet feeding device according to 2. First and second stacking means each capable of stacking sheets of a predetermined size;
First and second detection means for detecting the presence or absence of the respective sheets of the first and second stacking means;
A discriminating unit for discriminating whether or not a sheet having a size larger than the predetermined size is stacked across the first and second stacking units;
If the determination means determines that the large size paper is loaded, the remaining amount of paper is displayed based on the detection of one of the first and second detection means, and the determination means is the large Control means for controlling to display the remaining amount of paper based on the detection of each of the first and second detection means when it is determined that the size paper is not stacked;
Image forming means for forming an image on paper fed from the first stacking means;
An image forming apparatus comprising:   The control means changes the icon when the determination means determines that the large size paper is stacked and when the determination means determines that the large size paper is not stacked. The image forming apparatus according to claim 4, wherein the image forming apparatus is displayed. When the determining means determines that the large size paper is stacked, the control means displays the remaining amount of paper using a graphic representing the paper of the predetermined size or more,
5. The control unit according to claim 4, wherein when the determination unit determines that the large-size sheet is not stacked, the remaining amount of the sheet is controlled using a graphic representing the predetermined-size sheet. The image forming apparatus according to 5.   When the sheet is the sheet of the predetermined size, it further includes a transfer unit that transfers the sheet stacked on the second stacking unit to the first stacking unit when the sheet of the first stacking unit runs out. The image forming apparatus according to claim 4, wherein the image forming apparatus is an image forming apparatus. A designation unit that designates the size of the sheets stacked on the first and second stacking units by a user operation;
5. The discriminating unit discriminates whether or not a sheet is stacked across the first and second stacking units based on a paper size designated by the designation unit. 8. The image forming apparatus according to any one of items 1 to 7. Each of the first and second stacking units capable of stacking sheets of a predetermined size, and first and second detection units that detect the presence or absence of the respective sheets of the first and second stacking units. A control method for controlling a paper device,
A discriminating step in which the discriminating unit of the paper feeding device discriminates whether or not a sheet having a size larger than the predetermined size is stacked across the first and second stacking units;
When the control unit of the paper feeder determines that the large-size paper is stacked, the control unit of the paper feeder determines the remaining amount of paper based on detection of either the first or second detection unit. Display, and when the determination unit determines that the large-size sheet is not stacked, control is performed to display the remaining amount of sheet based on the detection of each of the first and second detection units. Process,
A control method for a sheet feeding device. An image having first and second stacking units each capable of stacking sheets of a predetermined size, and first and second detection units for detecting the presence or absence of the respective sheets of the first and second stacking units. A control method for controlling a forming apparatus,
A determining step in which the determining unit of the image forming apparatus determines whether or not a sheet having a size larger than the predetermined size is stacked across the first and second stacking units;
When the control unit of the image forming apparatus determines that the determination unit stores the large size sheet, the remaining amount of the sheet is determined based on the detection of either the first detection unit or the second detection unit. Display, and when the determination unit determines that the large-size sheet is not stacked, control is performed to display the remaining amount of sheet based on the detection of each of the first and second detection units. Process,
An image forming step in which an image forming unit of the image forming apparatus forms an image on a sheet fed from the first stacking unit;
A control method for an image forming apparatus, comprising:   The program for making a computer perform the control method of Claim 9 or 10.

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