Image forming apparatus

Abstract

To provide an image forming apparatus that has a higher convenience than a prior art in that the image forming apparatus displays, to a user, a confirmation screen for paper settings at an appropriate timing according to the user's usage state.SOLUTION: An image forming apparatus comprises: a paper tray; a paper detection sensor that detects that paper is set on the paper tray; a display unit; and a control unit. When the paper detection sensor detects paper on the paper tray, the control unit determines whether to display a confirmation screen for paper settings on the display unit, when a predetermined confirmation unnecessary condition is met, does not display the confirmation screen on the display unit, and when the confirmation unnecessary condition is not met, displays the confirmation screen on the display unit.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] This invention relates to an image forming apparatus.

Background Art

[0002] Some paper feed trays of image forming apparatuses, particularly manual trays, do not have an automatic paper size detection function due to cost and other issues. In such an image forming apparatus, conveyance and fixing of paper are controlled based on the paper size and type set by the user in advance. However, when paper different from the setting is set in the paper feed tray, problems such as paper jams and poor fixing may occur.

[0003] To solve such problems, conventionally, when it is detected that paper is set in the manual tray, an invention of an image forming apparatus has been disclosed that guides the user to input the size information and paper type information of the paper set in the manual tray by popping up a manual paper setting screen on the display unit of the operation panel (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when a confirmation screen is uniformly popped up on the display unit when paper is set in the paper feed tray, not only does it interfere with the user's operation, but also displays of serious errors and the like may be hidden by the confirmation screen, which may rather impair the user's convenience.

[0006] The present invention has been made in view of such problems, and provides an image forming apparatus with higher convenience than conventional ones by causing a confirmation screen for paper settings to be displayed to the user at an appropriate timing according to the usage status of the user.

Means for Solving the Problems

[0007] The present invention includes a paper tray, a paper detection sensor for detecting that paper is set in the paper tray, a display unit, and a control unit. When the paper detection sensor detects paper in the paper tray, the control unit determines whether a confirmation screen for paper settings should be displayed on the display unit. If it meets a predetermined condition where confirmation is not required, the confirmation screen is not displayed on the display unit. If it does not meet the confirmation-not-required condition, the confirmation screen is displayed on the display unit. The present invention provides an image forming apparatus characterized by this.

Effects of the Invention

[0008] According to the present invention, by causing a confirmation screen for paper settings to be displayed to the user at an appropriate timing according to the usage status of the user, an image forming apparatus with higher convenience than conventional ones can be realized.

Brief Description of the Drawings

[0009]

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BEST MODE FOR CARRYING OUT THE INVENTION

[0010] (1) The image forming apparatus according to the present invention includes a paper tray, a paper detection sensor that detects that paper is set in the paper tray, a display unit, and a control unit. When the paper detection sensor detects paper in the paper tray, the control unit determines whether to display a confirmation screen for paper settings on the display unit. If it meets a predetermined condition where confirmation is not required, the control unit does not display the confirmation screen on the display unit. If it does not meet the confirmation not required condition, the control unit displays the confirmation screen on the display unit.

[0011] In the present invention, the "paper tray" is a predetermined tray such as a manual tray or a paper feed cassette. Note that the number of paper trays is not limited to one, and a plurality of paper trays may be targeted. The "confirmation screen for paper settings" is a confirmation screen for paper settings such as the type and size of paper. The "condition where confirmation is not required" is a condition where display of the confirmation screen for paper settings is not required.

[0012] Furthermore, a preferred embodiment of the present invention will be described.

[0013] (2) In the image forming apparatus of the present invention, the condition where confirmation is not required may include a case where the display unit is displaying a paper setting screen.

[0014] In this way, when the paper setting screen is already being displayed, there is no need to redisplay the paper setting confirmation screen, so an image forming apparatus with higher convenience than conventional ones can be realized.

[0015] (3) In the image forming apparatus of the present invention, the condition where confirmation is not required may include a case where the display unit is displaying a predetermined manual or message.

[0016] Here, the "predetermined manual or message" is, for example, an instruction manual or a message to the user.

[0017] In this way, when an instruction manual or a message to the user is being displayed, the display of the paper setting confirmation screen will not interfere, so an image forming apparatus with higher convenience than conventional ones can be realized.

[0018] (4) In the image forming apparatus of the present invention, further comprising a user authentication unit, the condition where confirmation is not required may include a case where user authentication has not been performed by the user authentication unit.

[0019] Here, "user authentication has not been performed by the user authentication unit" means, for example, a state where the user has not logged in to the image forming apparatus.

[0020] In this way, there is no need to display the paper setting confirmation screen before user authentication, and the authentication screen will not be interfered by the display of the confirmation screen, so an image forming apparatus with higher convenience than conventional ones can be realized.

[0021] (5) In the image forming apparatus of the present invention, further comprising an error notification unit, the condition where confirmation is not required may include a case where the error notification unit is notifying an error.

[0022] By doing so, the display of the confirmation screen does not interfere with the confirmation of the error display or the settings for the error display, so that an image forming apparatus with higher convenience than the conventional one can be realized.

[0023] (6) In the image forming apparatus of the present invention, it may further include a power saving mode transition unit, and the condition where confirmation is not required may include the case where the power saving mode transition unit is in the process of transitioning to the power saving mode.

[0024] By doing so, since the power saving mode is not canceled by the display of the confirmation screen during the transition to the power saving mode, an image forming apparatus with higher convenience than the conventional one can be realized.

[0025] (7) In the image forming apparatus of the present invention, the condition where confirmation is not required may include the case where image formation is being executed from the paper tray.

[0026] By doing so, when image formation is being executed from the paper tray, since it is not necessary to change the paper settings, by not displaying the confirmation screen, an image forming apparatus with higher convenience than the conventional one can be realized.

[0027] (8) In the image forming apparatus of the present invention, after the display unit displays the confirmation screen, the control unit may keep the confirmation screen displayed on the display unit when the paper detection sensor stops detecting the paper set in the paper tray.

[0028] By doing so, when the paper detection sensor stops detecting the paper set in the paper tray due to paper exhaustion or the like, since the possibility of changing the paper type is low, by keeping the confirmation screen for the paper settings before paper exhaustion displayed, an image forming apparatus with higher convenience than the conventional one can be realized.

[0029] Hereinafter, the present invention will be described in more detail with reference to the drawings. Note that the following description is illustrative in all respects and should not be construed as limiting the present invention.

[0030] 〔Embodiment 1〕 Based on FIGS. 1 to 4, an overview of a digital multi-function peripheral 1 as an example of an image forming apparatus equipped with the image forming apparatus of the present invention will be described. FIG. 1 is a perspective view showing the appearance of the digital multi-function peripheral 1 of the present invention. FIG. 2 is a perspective view of the digital multi-function peripheral of FIG. 1 viewed from another angle. FIG. 3 is a plan view of the digital multi-function peripheral 1 of FIG. 1. FIG. 4 is an explanatory view showing an example of the panel unit 17 of FIG. 1.

[0031] The digital multi-function peripheral 1 is a device that has a copying function, a scanner function, and a facsimile function, and digitally processes and outputs image data read from a document.

[0032] As shown in FIGS. 1 to 4, the digital multi-function peripheral 1 includes a manual feed tray 161, a paper feed cassette 162, a document set table 163, and a panel unit 17. As shown in FIG. 4, the panel unit 17 includes a display operation unit 171 having a touch panel function and a physical operation unit 172.

[0033] Next, based on FIG. 5, the schematic configuration of the digital multi-function peripheral 1 will be described. FIG. 5 is a block diagram showing the schematic configuration of the digital multi-function peripheral 1 of FIG. 1. As shown in FIG. 5, the digital multi-function peripheral 1 includes a control unit 10, an image reading unit 11, an image forming unit 12, a storage unit 13, an image processing unit 14, a communication unit 15, a paper feeding unit 16, and a panel unit 17. Hereinafter, each component of the digital multi-function peripheral 1 will be described.

[0034] The control unit 10 integrally controls the digital multi-function peripheral 1, and includes a CPU, a RAM, a ROM, various interface circuits, and the like. In order to control the operation of the entire digital multi-function peripheral 1, the control unit 10 monitors and controls the detection of each sensor, motors, clutches, the panel unit 17, and all other loads.

[0035] The image reading unit 11 is a part that detects and reads a document such as a card placed on the document set table 163 or a document conveyed from a paper tray, and generates image data.

[0036] The image forming unit 12 is a part that prints and outputs the image data generated by the image processing unit 14 onto paper, and includes an LSU 121. The LSU 121 is a device that irradiates the surface of a photosensitive drum in a charged state with laser light corresponding to image information composed of a digital signal acquired by the image reading unit 11 to form an electrostatic latent image.

[0037] The storage unit 13 is an element or storage medium that stores information necessary to realize various functions of the digital multi-function device 1, control programs, etc. For example, semiconductor elements such as RAM and ROM, storage media such as hard disks, flash memory units, and SSDs are used. Note that the area for holding data may be a hard disk drive, and the area for holding programs may be a flash memory unit. That is, the program and data may be held in different devices.

[0038] The image processing unit 14 is a part that converts the image of the document read by the image reading unit 11 into an appropriate electrical signal to generate image data. Also, it is a part that processes the image data input from the image reading unit 11 according to commands from the display operation unit 171 so as to be suitable for output such as enlargement and reduction. Also, it is a part that associates a plurality of image data according to a predetermined layout.

[0039] The communication unit 15 is a part that communicates with a computer, a mobile information terminal, an external information processing device, a facsimile device, etc. via a network or the like, and transmits and receives various information such as emails and faxes to and from these external communication devices.

[0040] The paper feeding unit 16 is a part that conveys the paper stored in the manual tray 161, the paper feeding cassette 162, and the document set table 163 to the image forming unit 12.

[0041] The panel unit 17 is a unit equipped with a Liquid Crystal Display, and includes a display operation unit 171 and a physical operation unit 172.

[0042] The display operation unit 171 is a part that displays various information and receives commands from the user through the touch panel function. The display operation unit 171 is composed of, for example, a CRT display, a liquid crystal display, an EL display, etc., and is a display device such as a monitor or a line display for displaying electronic data such as the processing state of an operating system or application software. The control unit 10 displays the operation and status of the digital multifunction machine 1 through the display operation unit 171.

[0043] <Outline of the display procedure of the paper setting confirmation screen> Next, based on FIG. 6, an outline of the display procedure of the paper setting confirmation screen of the digital multifunction machine 1 according to Embodiment 1 of the present invention will be described. FIG. 6 is a flowchart showing an outline of the display procedure of the paper setting confirmation screen of the digital multifunction machine 1 in FIG. 1.

[0044] In step S1 of FIG. 6, the control unit 10 determines whether paper is detected in the manual feed tray 161 (step S1). If paper is detected in the manual feed tray 161 (when the determination in step S1 is Yes), the control unit 10 makes a determination in step S2 (step S2). On the other hand, if no paper is detected in the manual feed tray 161 (when the determination in step S1 is No), the control unit 10 repeats the determination in step S1 (step S1).

[0045] Next, in step S2, the control unit 10 determines whether a predetermined unnecessary condition for displaying the paper setting confirmation screen (hereinafter, "unnecessary confirmation condition") is satisfied (step S2).

[0046] Here, an example of the unnecessary confirmation condition for paper setting is shown in Table 1 below.

[0047]

Table 1

[0048] The following explains each condition in Table 1.

[0049] 1. When "the paper setting screen is being displayed", since there is no need to duplicate the display of the paper setting confirmation screen, it shall be included in the conditions where paper setting confirmation is not required.

[0050] 2. When "the instruction manual is being displayed", if the paper setting confirmation screen is displayed, there is a possibility that the information the user wants to see will not be visible. Therefore, it shall be included in the conditions where paper setting confirmation is not required.

[0051] 3. When "before user authentication login", it is problematic that operations such as changing the paper setting can be performed when the user is not logged in. Also, there is a possibility that the login screen will be obstructed by the display of the confirmation screen. Therefore, it shall be included in the conditions where paper setting confirmation is not required.

[0052] 4. When "a jam / trouble warning is being displayed", there is a possibility that high-priority error displays and setting screens, etc. will be obstructed by the display of the confirmation screen. Therefore, it shall be included in the conditions where paper setting confirmation is not required.

[0053] 5. When "stopped due to a maintenance request", there is a possibility that the display of high-priority maintenance requests, etc. will be obstructed by the display of the confirmation screen. Therefore, it shall be included in the conditions where paper setting confirmation is not required.

[0054] 6. When "in the energy-saving mode", in order to prevent the energy-saving mode from being canceled by the display of the confirmation screen, it shall be included in the conditions where paper setting confirmation is not required.

[0055] 7. When "in service mode", if the confirmation screen is displayed and the setting screen is obstructed or the paper settings are changed during the inspection by the service technician, there will be a problem. Therefore, it shall be included in the conditions where paper settings do not require confirmation.

[0056] 8. When "printing is in progress from the target tray", if the paper settings are changed, there will be a problem. Therefore, it shall be included in the conditions where paper settings do not require confirmation.

[0057] Next, in step S2, if the predetermined conditions for not requiring confirmation of paper settings are met (when the determination in step S2 is Yes), the control unit 10 makes a determination in step S4 (step S4).

[0058] On the other hand, if the predetermined conditions for not requiring confirmation of paper settings are not met (when the determination in step S2 is No), the control unit 10 displays a confirmation screen for paper settings in step S3 (step S3). After that, the control unit 10 makes a determination in step S4 (step S4).

[0059] Next, in step S4, the control unit 10 determines whether the display operation unit 171 or the physical operation unit 172 has received a print command (step S4). If the display operation unit 171 or the physical operation unit 172 has received a print command (when the determination in step S4 is Yes), the control unit 10 causes the image forming unit 12 to execute printing on the paper in step S5 (step S5). After that, the control unit 10 ends the process.

[0060] On the other hand, if the display operation unit 171 or the physical operation unit 172 has not received a print command (when the determination in step S4 is No), the control unit 10 repeats the determination in step S4 (step S4).

[0061] Next, based on FIGS. 7 to 10, the details of the display of the confirmation screen for paper settings in step S3 of FIG. 6 will be described. FIG. 7 is a flowchart showing an example of the display procedure of the paper setting confirmation screen in FIG. 6. FIG. 8 is an explanatory diagram showing an example of the paper setting confirmation screen of the digital multifunction machine 1 in FIG. 1. FIG. 9 is an explanatory diagram showing an example of the paper setting screen of the digital multifunction machine 1 in FIG. 1. FIG. 10 is an explanatory diagram showing an example of the copy screen of the digital multifunction machine 1 in FIG. 1.

[0062] When paper is detected in the manual feed tray 161, in step S11 of FIG. 7, the control unit 10 causes the paper setting confirmation screen to be displayed (step S11).

[0063] FIG. 8 is an example of the paper setting confirmation screen CS1 that is pop-up displayed on the display operation unit 171. On the confirmation screen CS1, together with the message "The current settings of the manual feed tray are as follows", "Type: Plain Paper 1 (60-79 g / m 2 )" indicating the paper type and "Size: A4" indicating the paper size are described. Also, together with the message "If the paper to be printed is different, please press [Change].", the change key K1 and the OK key K2 are also displayed.

[0064] Next, in step S12 of FIG. 7, the control unit 10 determines whether the setting change key has been touched (step S12). If the setting change key is touched (when the determination in step S12 is Yes), in step S13, the control unit 10 causes the paper setting screen to be displayed (step S13). On the other hand, if the setting change key is not touched (when the determination in step S12 is No), the control unit 10 makes the determination in step S15 (step S15).

[0065] FIG. 9 is an example of the paper setting screen SS1 that is pop-up displayed on the display operation unit 171. The paper setting screen SS1 has two tabs, "Paper Type Setting" and "Paper Size Setting". In the example of FIG. 9, the tab for paper type setting is displayed and "Plain Paper 1" is selected.

[0066] When the user wants to change the paper type, the user touches another key such as "Plain Paper 2". When the user wants to change the paper size, the user selects the "Paper Size Settings" tab and then touches the key for the desired paper size.

[0067] Next, in step S14 of FIG. 7, the control unit 10 determines whether the display operation unit 171 has accepted a setting change (step S14). When the display operation unit 171 has accepted a setting change (when the determination in step S14 is Yes), the control unit 10 repeats the process of step S11 (step S11). On the other hand, when the display operation unit 171 has not accepted a setting change (when the determination in step S14 is No), the control unit 10 repeats the determination of step S13 (step S13).

[0068] In the example of FIG. 9, when changing from "Plain Paper 1" to "Plain Paper 2", the control unit 10 causes the display operation unit 171 to pop up and display a confirmation screen CS2 for the paper settings changed to "Type: Plain Paper 2".

[0069] Next, in step S15 of FIG. 7, the control unit 10 determines whether the setting confirmation key has been touched (step S15). When the setting confirmation key has been touched (when the determination in step S15 is Yes), the control unit 10 causes a copy screen to be displayed in step S16 (step S16). Thereafter, the control unit 10 ends the display process of the paper setting confirmation screen.

[0070] On the other hand, when the setting confirmation key has not been touched (when the determination in step S15 is No), the control unit 10 repeats the determination of step S12 (step S12).

[0071] In the example of FIG. 8, when the OK key K2 as the setting confirmation key is pressed, the control unit 10 causes a copy screen as shown in FIG. 10 to be displayed. Thereafter, when the start key K3 is touched, the control unit 10 causes the image forming unit 12 to execute printing on the paper.

[0072] In this way, when paper is detected in the manual feed tray 161, the confirmation screen for paper settings is displayed only when the confirmation-required condition is not satisfied, thereby displaying the confirmation screen for paper settings to the user at an appropriate timing according to the user's usage situation, and realizing a digital multifunction peripheral 1 with higher convenience than before.

[0073] [Embodiment 2] As Embodiment 2, not limited to the case where paper is set in the manual feed tray 161, even when paper is detected in a predetermined paper feed cassette 162 or the original set table 163, the process of displaying the confirmation screen for paper settings may be performed according to the procedures of FIGS. 6 and 7.

[0074] In this way, even in a digital multifunction peripheral 1 not provided with a detection sensor for detecting the type and size of paper in a predetermined paper feed cassette 162 or the original set table 163, by displaying the confirmation screen for paper settings to the user at an appropriate timing according to the user's usage situation, a digital multifunction peripheral 1 with higher convenience than before can be realized.

[0075] [Embodiment 3] Next, based on FIG. 11, an outline of the display procedure of the confirmation screen for paper settings of the digital multifunction peripheral 1 according to Embodiment 3 of the present invention will be described. FIG. 11 is a flowchart showing an outline of the display procedure of the confirmation screen for paper settings of the digital multifunction peripheral 1 according to Embodiment 2 of the present invention.

[0076] Note that the processes of steps S21 to S23, S25, and S26 in FIG. 11 are the same as the processes of steps S1 to S5 in FIG. 5, so the description thereof will be omitted. Here, the process of step S24 in FIG. 11 will be described.

[0077] When the paper detection sensor fails to detect the paper set in the manual feed tray 161 due to paper runout or the like, since the user replenishes the same type of paper, there is no need to display a confirmation screen for new paper settings.

[0078] Therefore, in step S23 of FIG. 11, after displaying the confirmation screen for paper settings (step S23), the control unit 10 determines in step S24 whether or not the paper is no longer detected in the manual feed tray 161 (step S24).

[0079] If the paper is no longer detected in the manual feed tray 161 (when the determination in step S24 is Yes), the control unit 10 repeats the process of step S23 (step S23). On the other hand, if the paper is detected in the manual feed tray 161 (when the determination in step S24 is No), the control unit 10 makes a determination in step S25 (step S25).

[0080] In this way, after the paper is detected in the manual feed tray 161, even if the paper is no longer detected, by keeping the confirmation screen for the paper settings before the paper runout displayed, the digital multifunction machine 1 with higher convenience than before can be realized.

[0081] 〔Embodiment 4〕 As Embodiment 4, even if a dialog or the like for function settings is already being displayed on the display operation unit 171, the confirmation screen for paper settings may be displayed thereon, and after the setting confirmation key is touched, the original dialog may be displayed.

[0082] In this way, after the confirmation screen for paper settings is displayed on the display operation unit 171, even after the setting confirmation key is touched, the dialog or the like for function settings continues to be displayed, so that the setting can be continued, and the digital multifunction machine 1 with higher convenience than before can be realized.

[0083] 〔Embodiment 5〕 As Embodiment 5, when a paper jam occurs during job execution such as printing, it may be added to the conditions that do not require confirmation of paper settings even when paper is replenished.

[0084] In this way, when a paper jam occurs during job execution such as printing, there is no need to change the paper size or type, so a digital multifunction machine 1 with higher convenience than before can be realized.

[0085] 〔Embodiment 6〕 As Embodiment 6, when the confirmation screen for paper settings is displayed on the display operation unit 171 while a screen on which the start key K3 for a job is displayed, such as the copy basic screen in FIG. 10, the start key K3 may be disabled from being operated.

[0086] In this way, it is possible to prevent the start key K3 of the job from being accidentally touched while the confirmation screen is being displayed, so a digital multifunction machine 1 with higher convenience than before can be realized.

[0087] 〔Embodiment 7〕 As Embodiment 7, when a screen other than the confirmation screen for paper settings is being displayed on the display operation unit 171, and when the paper is detected in the manual tray 161 and then the screen transitions to the copy screen, the confirmation screen for paper settings may not be displayed on the display operation unit 171.

[0088] Here, examples of "screens other than the confirmation screen for paper settings" include, for example, the screen in the service technician mode. Since the service technician is familiar with the paper setting operations, there will be no setting omission even without the guidance display of this case, and also, displaying the confirmation screen for paper settings will rather reduce the work efficiency.

[0089] In this way, the operation procedure in the service technician's inspection work can be reduced, and the effect of improving the work efficiency can be obtained, so a digital multifunction machine 1 with higher convenience than before can be realized.

[0090] 〔Embodiment 8〕 As Embodiment 8, when a setting dialog for a predetermined paper feed cassette 162 is being displayed and paper is detected in the manual feed tray 161, a confirmation screen for paper settings may be displayed on the display operation unit 171.

[0091] At this time, the setting of the paper feed cassette 162 is set to the state where the currently selected paper feed cassette 162 is selected, and when the setting change key is touched, it is switched to the manual feed tray 161.

[0092] By doing so, since the effect that the setting operation of the currently selected paper feed cassette can be continued without being inhibited and the current operation can be given priority can be obtained, a digital multi-functional machine 1 with higher convenience than before can be realized.

[0093] Preferred aspects of this invention also include combinations of any of the above-described aspects. In addition to the above-described embodiments, there can be various modifications to this invention. Those modifications should not be construed as not belonging to the scope of this invention. This invention should include meanings equivalent to the claims and all modifications within the above scope.

Explanation of Signs

[0094] 1: Digital multi-functional machine, 10: Control unit, 11: Image reading unit, 12: Image forming unit, 13: Storage unit, 14: Image processing unit, 15: Communication unit, 16: Paper feed unit 17: Panel unit, 121: LSU, 161: Manual feed tray, 162: Paper feed cassette, 163: Document setting table, 171: Display operation unit, 172: Physical operation unit, CS1: Confirmation screen, K1: Change key, K2: OK key, K3: Start key, SS1: Paper setting screen

Claims

1. having a plurality of functions including a copying function and a scanner function, comprising a manual feed tray, a paper detection sensor for detecting that paper has been set on the manual feed tray, a display unit for displaying a display screen, and a control unit, the display screen having a function selection area for enabling selection of one of the plurality of functions, a basic area for displaying a screen corresponding to the selected one function, and a job start key, the function selection area being disposed above the basic area, when the selected one function is the copying function, the control unit, when the paper detection sensor detects paper in a state where a screen corresponding to the copying function is displayed in the basic area, pops up and displays a paper setting confirmation screen in the basic area based on the detection by the paper detection sensor, during the display of the paper setting confirmation screen, the currently selected function is viewable and the job start key is made inoperable, when a button for displaying a screen corresponding to the copying function is operated on the paper setting confirmation screen, the currently selected function is viewable and the job start key is made operable, when an error that prevents execution of the currently selected function is detected, a warning screen is displayed on the display unit, and in a state where the warning screen is displayed, the paper setting confirmation screen is not displayed in the basic area, an image forming apparatus characterized by this.

2. The image forming apparatus according to claim 1, wherein, in a state where paper runs out in the manual feed tray during job execution, paper is set in the manual feed tray, and based on detection of the paper by the paper detection sensor, paper settings before the paper runout are displayed.

3. The control unit, based on detection of paper in the manual feed tray by the paper detection sensor, causes the display unit to display the paper setting confirmation screen together with a part of the display screen that was being displayed on the display unit before the paper was set in the manual feed tray, the image forming apparatus according to claim 2.

4. The image forming apparatus according to claim 1, wherein the warning screen is a warning screen displayed based on the occurrence of a jam.

5. The image forming apparatus according to claim 1, wherein the warning screen is a warning screen displayed based on the occurrence of a trouble.

6. further comprising a user authentication unit The image forming apparatus according to any one of claims 1 to 5, wherein when user authentication has not been performed by the user authentication unit, the control unit does not cause the display unit to display the paper setting confirmation screen. **Claim 7** further comprising a power saving mode transition unit, The image forming apparatus according to any one of claims 1 to 5, wherein when the control unit is transitioning to the power saving mode by the power saving mode transition unit, the control unit does not cause the display unit to display the paper setting confirmation screen.

Images