JP2018092263A - Image display apparatus and image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display apparatus and an image forming apparatus capable of preventing execution of unintentional processing due to erroneous operation by a user.SOLUTION: An image forming apparatus includes a touch screen 4, a second operation determination processing unit 51, a condition determination processing unit 56, and an operation invalidation processing unit 57. The touch screen 4 displays a specific operation button associated with executable predetermined specific processing. The second operation determination processing unit 51 determines whether or not touch operation is performed on the specific operation button. The condition determination processing unit 56 determines whether or not a predetermined specific condition is satisfied when it is determined by the second operation determination processing unit 51 that the touch operation is performed on the specific operation button. The operation invalidation processing unit 57 executes processing of invalidating the touch operation on the specific operation button when it is determined by the condition determination processing unit 56 that the specific condition is satisfied.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an image display device including a touch screen, and an image forming apparatus.

  Some image forming apparatuses include an image display apparatus having a touch screen on which a plurality of operation buttons associated with a specific process are displayed (see Patent Document 1). In this type of image forming apparatus, the specific process is executed in response to a user's touch operation on the operation button, and the display screen changes.

Japanese Patent Laid-Open No. 2007-230054

  However, in the image display apparatus, the user may erroneously operate a specific operation button that instructs processing such as cancellation due to misunderstanding or misunderstanding of the operation button. In particular, a user who wants to proceed the process quickly tends to perform an erroneous operation because there is a tendency to perform a touch operation on the operation button without sufficiently confirming the operation button. When an erroneous operation is performed on the specific operation button, the user needs to redo an operation for causing the image display device to execute a target process, and is troublesome.

  It is an object of the present invention to provide an image display apparatus and an image forming apparatus that can prevent an unintended process from being executed due to a user's erroneous operation.

  An image display device according to one aspect of the present invention includes a touch screen, an operation determination processing unit, a condition determination processing unit, and an operation invalidation processing unit. The touch screen displays a specific operation button associated with a predetermined specific process that can be executed. The operation determination processing unit determines whether a touch operation on the specific operation button has been performed. The condition determination processing unit determines whether or not a predetermined specific condition is satisfied when the operation determination processing unit determines that a touch operation on the specific operation button has been performed. The operation invalidation processing unit executes processing for invalidating a touch operation on the specific operation button when the condition determination processing unit determines that the specific condition is satisfied.

  An image forming apparatus according to another aspect of the present invention includes an image forming unit that forms an image on printing paper, and the image display device.

  ADVANTAGE OF THE INVENTION According to this invention, the image display apparatus and image forming apparatus which can suppress that the process contrary to will by a user's mistaken operation are suppressed can be provided.

FIG. 1 is a cross-sectional view schematically showing an image forming apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a home screen on the touch screen of the image forming apparatus of FIG. FIG. 3 is a diagram illustrating an example of a paper size setting screen on the touch screen of the image forming apparatus of FIG. FIG. 4 is a diagram illustrating an example of a color setting screen on the touch screen of the image forming apparatus of FIG. FIG. 5 is a diagram showing an example of an aggregation setting screen on the touch screen of the image forming apparatus of FIG. FIG. 6 is a diagram illustrating an example of another item setting screen on the touch screen of the image forming apparatus in FIG. 1. FIG. 7 is a diagram illustrating an example of a copy instruction screen on the touch screen of the image forming apparatus of FIG. FIG. 8 is a block diagram illustrating an example of a control unit of the image forming apparatus of FIG. FIG. 9 is a flowchart illustrating an example of the procedure of the operation invalidation process executed by the control unit of FIG. FIG. 10 is a flowchart illustrating an example of the procedure of the operation invalidation process executed by the control unit of FIG. FIG. 11 is a flowchart illustrating an example of the procedure of the operation invalidation process executed by the control unit of FIG. FIG. 12 is a flowchart illustrating an example of the procedure of the operation invalidation process executed by the control unit of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiment described below is merely an example embodying the present invention, and the embodiment of the present invention can be changed as appropriate without departing from the scope of the present invention.

  An image forming apparatus 10 shown in FIG. 1 has a scanner function for reading an image from a document, and a printer function capable of forming a color image or a monochrome image on printing paper by using an electrophotographic method using toner. In the present embodiment, the image forming apparatus 10 includes a facsimile function, a transmission function, and a BOX function.

  The image forming apparatus 10 includes an ADF 11, an image reading unit 12, an image forming unit 13, a paper feed tray 14, a paper discharge tray 15, a touch screen 4, and a control unit 5.

  The ADF 11 is an automatic document feeder that conveys a document set in a document setting unit (not shown) by passing it through a position where image data is read by the image reading unit 12. The image reading unit 12 can read an image from a document set on a contact glass (not shown) or a document conveyed by the ADF 11.

  The image forming unit 13 forms an image on printing paper. The image forming unit 13 includes a plurality of image forming units 2, an intermediate transfer belt 31, an exposure device 32, a secondary transfer roller 33, and a fixing device 34.

  Each of the image forming units 2 includes a photosensitive drum 21 that carries a toner image, a charging device 22 that charges the outer surface of the photosensitive drum 21, a developing device 23 that forms a toner image on the photosensitive drum 21, and a primary transfer device 24. Is provided.

  The intermediate transfer belt 31 carries a toner image composed of a plurality of color toner images (four colors in this embodiment). The intermediate transfer belt 31 is supported by a driving roller 311 and a driven roller 312 so as to be rotationally driven. The surface of the intermediate transfer belt 31 is movable while being in contact with the surface of each photosensitive drum 21.

  The secondary transfer roller 33 transfers the toner image transferred to the intermediate transfer belt 31 to the printing paper conveyed from the paper feed tray 14. The printing paper onto which the toner image has been transferred is conveyed to the fixing device 34 by a conveyance unit (not shown). The fixing device 34 includes a heating roller 341 and a pressure roller 342. The fixing device 34 conveys the printing paper on which the toner image is transferred while applying heat and pressure. As a result, the toner image is melted and fixed on the printing paper. The printing paper on which the toner image is fixed is further conveyed to the downstream side and is discharged to a paper discharge tray 15 disposed above the intermediate transfer belt 31.

  The touch screen 4 has a configuration in which a transparent touch panel is superimposed on an image display unit such as a liquid crystal display device. The touch screen 4 constitutes the image display device of the present invention. In the present embodiment, in the touch screen 4, the image display unit functions as a display unit, and the touch panel functions as an operation unit. That is, the touch screen 4 displays various information and is operated by the user when inputting information to the image forming apparatus 10. For example, the touch screen 4 can display a plurality of operation buttons associated with a predetermined process that can be executed in the image forming apparatus 10. In the image forming apparatus 10, when the user performs a touch operation on the operation button, the process associated with the operation button is executed, and the display screen on the touch screen 4 is changed. Note that the touch operation in the present invention is a single tap.

  2 to 7 are examples of display screens on the touch screen 4 of the image forming apparatus 10. The display screen shown in FIG. 2 is the home screen 6. The display screen shown in FIGS. 3 to 6 is a copy setting screen 7. The display screen shown in FIG. 7 is a copy instruction screen 9. The copy setting screen 7 and the copy instruction screen 9 are examples of the specific display screen of the present invention.

  As shown in FIG. 2, the home screen 6 displays a plurality of first operation buttons 61 to 64 for functions that can be executed in the image forming apparatus 10.

  The first operation button 61 includes a character image of “copy”, and executes a copy function by a touch operation by the user. The first operation button 62 includes a character image of “FAX” and causes the facsimile function to be executed by a touch operation by the user. The first operation button 63 includes a “send” character image, and transmits image data read from a document by a user's touch operation to an external device such as a personal computer or an FTP server, and stores the data in the external device. Is executed. The first operation button 64 includes a character image of “BOX”, and executes a BOX function for storing the image data in a memory such as a hard disk device of the image forming apparatus 10 by a user's touch operation.

  The copy setting screen 7 shown in FIGS. 3 to 6 includes a paper size setting screen 71 (see FIG. 3), a color setting screen 72 (see FIG. 4), an aggregation setting screen 73 (see FIG. 5), and other item setting screens. 74 (see FIG. 6).

  A paper size setting screen 71 shown in FIG. 3 is a display screen that allows the user to set the size of the printing paper. The paper size setting screen 71 transitions when a touch operation is performed on the first operation button 61 (see FIG. 2) for which “Copy” is displayed on the home screen 6. Note that the copy setting is set to the default setting when transitioning to the paper size setting screen 71. The default setting for the paper size is “A4”. The default setting of the print color is “automatic” in which the image forming apparatus 10 selects the print color based on the image data of the document read by the image reading unit 12. The default setting for aggregation is “1 in 1” (no aggregation processing).

  In the paper size setting screen 71, an image 81 indicating the copy setting screen 7, an image 82 indicating settable items, a plurality of second operation buttons 711 to 714, and a plurality of third operation buttons 83 to 85 are displayed. Is displayed. The image 81 includes a character image of “copy setting”. The image 82 has four regions. Each area includes a character image for an item that can be set for copying, and a character image for the selected setting content. In the image 82, the area corresponding to the item being set is displayed in a different manner from the areas corresponding to the other items. For example, the area corresponding to the item being set is highlighted. In FIG. 3, an area including “paper: A4” is highlighted, indicating that the setting item is the paper size and A4 size is selected as the paper size.

  The plurality of second operation buttons 711 to 714 are operation buttons related to settable paper sizes. The second operation button 711 includes an “automatic” character image indicating that the image forming apparatus 10 automatically selects the paper size. The second operation button 712 includes a character image “A4” indicating that the paper size is A4 size. The second operation button 713 includes a character image “A5” indicating that the paper size is A5 size. The second operation button 714 includes a character image “B5” indicating that the paper size is B5 size. On the paper size setting screen 71, the paper size can be set by a touch operation on any of the second operation buttons 711 to 714. In the plurality of second operation buttons 711 to 714, the selected setting content image is displayed in a different manner from the other setting content images. The image of the setting content being selected is displayed in reverse, for example. In FIG. 3, A4 size is selected as the paper size.

  The plurality of third operation buttons 83 to 85 include a third operation button 83 including a “clear” character image, a third operation button 84 including a “cancel” character image, and a “next” character image. 3 operation buttons 85.

  When the third operation button 83 related to “Clear” is touch-operated, the image forming apparatus 10 sets the copy setting to the default unless a specific condition described later is satisfied. The third operation button 83 is an example of a specific operation button of the present invention. Further, the process associated with the third operation button 83 is an example of a cancellation process in the specific process of the present invention.

  When the third operation button 84 related to “Cancel” is touched, the image forming apparatus 10 ends the copy setting without copying the document unless a specific condition described later is satisfied. At this time, the display screen transitions to the home screen 6. The third operation button 84 is an example of a specific operation button of the present invention. The process associated with the third operation button 84 is an example of an end process in the specific process of the present invention.

  When the third operation button 83 related to “Next” is touched, the image forming apparatus 10 stores information on the paper size set by the user in a storage unit (not shown), and displays the display screen on the color setting screen 72. (See FIG. 4).

  A color setting screen 72 shown in FIG. 4 is a display screen that allows a user to set a print color. The color setting screen 72 transitions when a touch operation is performed on the third operation button 85 (see FIG. 3) for which “Next” is displayed on the paper size setting screen 71. At the time of transition to the color setting screen 72, the color setting is set to the default “automatic”.

  In the color setting screen 72, an image 81 indicating the copy setting screen 7, an image 82 indicating settable items, a plurality of third operation buttons 83 to 85, and a plurality of fourth operation buttons 721 to 723 are displayed. Is displayed. The image 81, the image 82, and the plurality of third operation buttons 83 to 85 are the same as those in the paper size setting screen 71. However, when the third operation button 85 regarding “NEXT” is touched on the color setting screen 72, the image forming apparatus 10 stores information on the print color set by the user in a storage unit (not shown), The display screen is changed to the aggregation setting screen 73 (see FIG. 5).

  The plurality of fourth operation buttons 721 to 723 are operation buttons related to print colors that can be set. The fourth operation button 721 includes an “automatic” character image indicating that the image forming apparatus 10 automatically selects a print color. The fourth operation button 722 includes a “color” character image indicating that the print color is color. The fourth operation button 723 includes a “monochrome” character image indicating that the print color is monochrome. On the color setting screen 72, a print color can be set by a touch operation on any of the fourth operation buttons 721 to 723.

  An aggregation setting screen 73 shown in FIG. 5 is a display screen that allows the user to set an aggregation pattern. The aggregation setting screen 73 transitions when a touch operation is performed on the third operation button 85 (see FIG. 4) for which “Next” is displayed on the color setting screen 72. At the time of transition to the aggregation setting screen 73, the aggregation pattern setting is set to default “1 in 1” (no aggregation processing).

  In the aggregation setting screen 73, an image 81 indicating the copy setting screen 7, an image 82 indicating settable items, a plurality of third operation buttons 83 to 85, and a plurality of fifth operation buttons 731 to 733 are displayed. Is displayed. The image 81, the image 82, and the plurality of third operation buttons 83 to 85 are the same as those in the paper size setting screen 71 and the color setting screen 72. However, when the third operation button 85 regarding “NEXT” is touched on the aggregation setting screen 73, the image forming apparatus 10 stores information on the aggregation pattern setting set by the user in a storage unit (not shown). The display screen transitions to the other item setting screen 74 (see FIG. 6).

  The plurality of fifth operation buttons 731 to 733 are operation buttons related to settable aggregation patterns. The fifth operation button 731 includes a character image of “1 in 1” indicating that collection is not performed. The fifth operation button 732 includes a character image “2 in 1” indicating that images of two documents are printed on one sheet. The fifth operation button 733 includes a character image of “4 in 1” indicating that images of four documents are printed on one sheet. On the aggregation setting screen 73, an aggregation pattern can be set by a touch operation on any of the fifth operation buttons 731 to 733.

  The other item setting screen 74 shown in FIG. 6 is a display screen that allows setting of other predetermined items other than paper size setting, color setting, and aggregation setting. Examples of the other items include print density, image data scaling, and print paper type. Further, in the other item setting screen 74, as in the paper size setting screen 71 and the like, an image 81 indicating the copy setting screen 7, an image 82 indicating settable items, and a plurality of third operation buttons 83 to 85 are provided. Is displayed. However, when the third operation button 85 regarding “NEXT” is touched on the other item setting screen 74, the image forming apparatus 10 stores information on the other items set by the user in a storage unit (not shown). The display screen is changed to the copy instruction screen 9 (see FIG. 7).

  A copy instruction screen 9 shown in FIG. 7 is a screen that can instruct the start of copying. On the copy instruction screen 9, a plurality of sixth operation buttons 91 to 93 are displayed.

  The sixth operation button 91 includes a character image “copy”. When the sixth operation button 91 relating to “copying” is touched, the image forming apparatus 10 executes a copy process. That is, the image forming apparatus 10 reads an image of a document by the image reading unit 12 and forms an image on a sheet by the image forming unit 13 based on image data read from the document.

  The sixth operation button 92 includes a character image of “clear”. When the sixth operation button 92 related to “Clear” is touched, the image forming apparatus 10 sets the copy setting to the default unless a specific condition described later is satisfied. At this time, the display screen transitions to a paper size setting screen 71 (see FIG. 3) of the copy setting screen 7.

  The sixth operation button 93 includes a “cancel” character image. When the sixth operation button 93 related to “Cancel” is touched, the image forming apparatus 10 ends the copy setting without copying the document unless a specific condition described later is satisfied. At this time, the display screen transitions to the home screen 6 (see FIG. 2).

  The sixth operation button 92 related to “Clear” and the sixth operation button 93 related to “Cancel” are similar to the third operation button 83 related to “Clear” and the third operation button 84 related to “Cancel”. It is an example of a button.

  The control unit 5 shown in FIG. 1 controls the image forming unit 13 in an integrated manner. In addition, the control unit 5 performs a transition of the display screen of the touch screen 4, processing according to a touch operation on the touch screen 4, and the like. The control unit 5 is a computer having control devices such as a CPU, ROM, and RAM. The control unit 5 controls the image forming unit 13, the touch screen 4, and the like by executing a control program stored in advance in the ROM using a RAM or the like as a temporary storage memory (working area). As shown in FIG. 8, the control unit 5 includes a first operation determination processing unit 50, a second operation determination processing unit 51 (an example of the operation determination processing unit of the present invention), a time measurement processing unit 52, and an elapsed time determination. A processing unit 53, a count processing unit 54, a number determination processing unit 55, a condition determination processing unit 56, and an operation invalidation processing unit 57 are provided. The second operation determination processing unit 51, the time measurement processing unit 52, the elapsed time determination processing unit 53, the count processing unit 54, the number of times determination processing unit 55, the condition determination processing unit 56, and the operation invalidation processing unit 57 are images of the present invention. Configure the display device.

  The first operation determination processing unit 50 determines whether or not a touch operation on the operation buttons such as the second operation buttons 711 to 714 and the third operation buttons 83 to 85 displayed on the display screen such as the copy setting screen 7 has been performed. judge.

  The second operation determination processing unit 51 determines whether or not a touch operation on the specific operation button has been performed. Specifically, when the first operation determination processing unit 50 determines that the touch operation has been performed on the operation button, the second operation determination processing unit 51 determines the operation button on which the touch operation has been performed in advance. It is determined whether it is a specific operation button. For example, the second operation determination processing unit 51 determines whether or not the operation button determined to have been touched by the first operation determination processing unit 50 corresponds to the specific operation button stored in the control unit 5. To do. In the present embodiment, the specific operation buttons are the third operation buttons 83 and 84 and the sixth operation buttons 92 and 93.

  The time measurement processing unit 52 measures the elapsed time since the display screen transits to a specific display screen such as the copy setting screen 7 displaying the specific operation button. That is, the time measuring unit 52 measures the time after displaying the specific operation button. For example, the time measurement processing unit 52 measures the elapsed time by incrementing a time counter (not shown) of the control unit 5 in accordance with a predetermined clock cycle when the display is changed to the specific display screen.

  The elapsed time determination processing unit 53 determines the elapsed time measured by the time measurement processing unit 52 when the second operation determination processing unit 51 determines that a touch operation on the specific operation button has been performed. It is determined whether it is less than time. That is, the elapsed time determination processing unit 53 determines whether a touch operation on the specific operation button has been performed before the specific time has elapsed. The specific time is set within one minute, for example. The specific time is preferably within 10 seconds, and more preferably within 2 seconds. The specific time may be set to a user's favorite time by user setting.

  The count processing unit 54 counts the number of times that the second operation determination processing unit 51 determines that the touch operation on the specific operation button has been performed within the specific time. That is, the count processing unit 54 counts the number of times that the specific operation button is touched before the specific time elapses. For example, the count processing unit 54 counts the number of determinations by incrementing a determination number counter (not shown) of the control unit 5 when a touch operation on the specific operation button is performed before the specific time elapses. To do. Note that the value of the determination number counter is the value when the operation invalidation processing unit 57 invalidates the touch operation on the specific operation button after the elapse of the specific time, or the operation invalidation processing unit 57 touches the specific operation button. Cleared when the operation is enabled. In addition, when a plurality of the specific operation buttons are set, the count processing unit 54 counts the number of determinations for each specific operation button. In the present embodiment, the count processing unit 54 counts the number of determinations for the specific operation button regarding “clear” as the first count number N1, and sets the number of determinations for the specific operation button regarding “cancel” as the second count number N2. Count.

  The number-of-times determination processing unit 55 determines whether or not the number of determinations counted by the count processing unit 54 is a predetermined number of predetermined operations from two or more times. For example, the number determination processing unit 55 refers to the value of the determination number counter to determine whether or not the determination number is the specified operation number.

  The condition determination processing unit 56 determines whether or not a predetermined specific condition is satisfied when the second operation determination processing unit 51 determines that a touch operation on the specific operation button has been performed. In the present embodiment, the specific condition is, for example, that the elapsed time determination processing unit 53 determines that the elapsed time is less than the specific time. The specific condition may be that the specific operation button is associated with a predetermined specific process that can be executed by the image forming apparatus 10. The specific process is, for example, a process that prevents progress with respect to a target process. The process that hinders the progress of the target process is, for example, a cancel process or an end process. The condition determination processing unit 56 determines that the number of determinations by the number determination processing unit 55 is less than the specified number of operations when the specific operation button associated with the specific process is operated within the specific time. It may be determined that the specific condition is satisfied.

  The operation invalidation processing unit 57 executes processing for invalidating the touch operation on the specific operation button when the condition determination processing unit 56 determines that the specific condition is satisfied. In the present embodiment, the operation invalidation processing unit 57 is configured such that when the touch operation on the specific operation button is performed within the specific time, the number of touch operations on the specific operation button within the specific time is less than the specified operation number. At a certain time, processing for invalidating the touch operation on the specific operation button is executed.

  By the way, in an image forming apparatus provided with a touch screen, a specific operation button for instructing processing such as cancellation may be erroneously operated due to a misunderstanding or misunderstanding of an operation button. In particular, a user who wants to proceed the process quickly tends to perform an erroneous operation because there is a tendency to perform a touch operation on the operation button without sufficiently confirming the operation button. When an erroneous operation is performed on the specific operation button, the user needs to redo an operation for causing the image display device to execute a target process, and is troublesome. On the other hand, in the image forming apparatus 10 according to the present embodiment, the touch operation on the specific operation button is performed in advance from the number of times of two or more within a specific time after the specific operation button instructing processing such as cancellation is displayed. The touch operation is validated when the predetermined prescribed number of operations is performed, and the touch operation on the specific operation button is invalidated when the number is less than the prescribed number of operations. That is, the user needs to perform a touch operation on the specific operation button more than the specified number of operations in order to validate the touch operation on the specific operation button within the specific time. For this reason, even when the user erroneously operates the specific operation button, the user can be relieved from the erroneous operation when the number of erroneous operations is less than the specified number of operations. This can reduce the possibility of forcing the user to perform cumbersome work.

  Next, the operation invalidation process executed by the control unit 5 will be described with reference to the flowchart of FIG. In the figure, S1, S2,... Represent processing procedure (step) numbers. Each step includes the first operation determination processing unit 50, the second operation determination processing unit 51, the time measurement processing unit 52, the elapsed time determination processing unit 53, the count processing unit 54, the number determination processing unit 55, and the condition of the control unit 5. It is executed by the determination processing unit 56, the operation invalidation processing unit 57, and the like. In the operation invalidation process described below, it is assumed that the specified number of operations is set to two.

<Steps S1 and S2>
As shown in FIG. 9, in step S <b> 1, the control unit 5 determines whether or not the display screen after the transition is a specific display screen displaying the specific operation button. For example, the control unit 5 determines whether or not the display screen after transition has transitioned to the paper size setting screen 71 (see FIG. 3), and whether or not the display screen after transition has transitioned to the copy instruction screen 9 (see FIG. 7). Determine whether or not.

  When the display screen transitions to the specific display screen (step S1: Yes), the control unit 5 shifts the processing to step S2. On the other hand, the control part 5 complete | finishes an operation invalidation process, when a display screen does not change to a specific display screen (step S1: No).

<Step S2>
In step S <b> 2, the control unit 5 starts measuring the elapsed time since the transition to the specific display screen. The elapsed time is counted by the timing processing unit 52.

<Step S3>
In step S <b> 3, the control unit 5 determines whether the elapsed time after the display screen transitions to the specific display screen is less than the specific time. Specifically, the elapsed time determination processing unit 53 determines whether or not the elapsed time is less than the specific time based on the time counter (not shown).

  When the elapsed time is less than the specific time (step S3: Yes), the control unit 5 shifts the process to step S4. On the other hand, when the elapsed time is not less than the specific time (step S3: No), the control unit 5 shifts the process to step S10.

<Step S4>
When the specific time has not elapsed (step S3: Yes), in step S4, the control unit 5 determines whether the touch operation on the operation button has been performed by the first operation determination processing unit 50.

  When the touch operation on the operation button is performed (step S4: Yes), the control unit 5 shifts the process to step S5. On the other hand, when the touch operation with respect to the operation button is not performed (step S4: No), the control unit 5 shifts the process to step S3 and determines whether or not the specific time has elapsed.

<Step S5>
When a touch operation on the operation button is performed (step S4: Yes), the control unit 5 determines whether or not the operation button on which the touch operation is performed is the specific operation button related to “clear” in step S5. To do. The second operation determination processing unit 51 determines whether or not the operation button on which the touch operation has been performed is the specific operation button related to “clear”.

  When the operation button on which the touch operation is performed is the specific operation button related to “clear” (step S5: Yes), the control unit 5 shifts the process to step S6. On the other hand, when the operation button on which the touch operation is performed is not the specific operation button related to “clear” (step S5: No), the control unit 5 shifts the process to step S7.

<Step S6>
When the touch operation on the specific operation button related to “clear” is performed (step S5: Yes), the control unit 5 executes the clear operation process illustrated in FIG. 10 in step S6.

  As shown in FIG. 10, the control unit 5 increments the first count number N1 by the count processing unit 54 (step S61). When the first count number N1 is incremented (step S61), the control unit 5 determines whether or not the first count number N1 is “2” by the number determination processing unit 55 (step S62).

  When the first count number N1 is “2” (step S62: Yes), the control unit 5 shifts the process to step S63. On the other hand, when the first count number N1 is not “2” (step S62: No), the control unit 5 shifts the process to step S3 (see FIG. 9) and determines whether or not the specific time has elapsed. To do.

  When the first count number N1 is “2” (step S62: Yes), the control unit 5 enables the touch operation on the specific operation button regarding “clear” (step S63), and the number determination processing unit 55 performs the first operation. The 1 count number N1 and the second count number N2 are cleared (step S64). The control part 5 complete | finishes an operation invalidation process, when the process with respect to step S63 and S64 is complete | finished.

<Step S5>
As illustrated in FIG. 9, when the operation button on which the touch operation is performed is not the specific operation button related to “clear” (step S5: No), the control button 5 determines that the operation button on which the touch operation has been performed is “cancel”. It is determined whether or not it is the specific operation button relating to “” (step S7).

  When the touch operation on the specific operation button related to “cancel” is performed (step S7: Yes), the control unit 5 shifts the process to step S8. On the other hand, when the touch operation on the specific operation button related to “cancel” is not performed (step S7: No), the control unit 5 shifts the process to step S9.

<Step S8>
When the touch operation on the specific operation button related to “cancel” is performed (step S7: Yes), the control unit 5 executes the cancel operation process illustrated in FIG.

  As shown in FIG. 11, the control unit 5 causes the count processing unit 54 to increment the second count number N2 (step S81). When the second count number N2 is incremented (step S81), the control unit 5 determines whether or not the second count number N2 is “2” by the number determination processing unit 55 (step S82).

  When the second count number N2 is “2” (step S82: Yes), the control unit 5 shifts the process to step S83. On the other hand, when the second count number N2 is not “2” (step S82: No), the control unit 5 shifts the process to step S3 (see FIG. 9) and determines whether or not the specific time has elapsed. To do.

  When the second count number N2 is “2” (step S82: Yes), the control unit 5 enables the touch operation on the specific operation button regarding “cancel” (step S83). The 1 count number N1 and the second count number N2 are cleared (step S84). Control part 5 ends operation invalidation processing, when processing to Steps S83 and S84 is completed.

<Step S9>
As illustrated in FIG. 9, when the operation button on which the touch operation has been performed is not the specific operation button regarding “clear” and “cancel” (step S7: No), the operation on which the touch operation has been performed is performed. The process associated with the button is executed, and the operation invalidation process is terminated.

<Step S10>
When the elapsed time is not less than the specific time (step S3: No), the control unit 5 executes the specific time elapsed process shown in FIG.

  As shown in FIG. 12, the control unit 5 ends the measurement of the elapsed time by the time measuring unit 52 (step S11), and the number determination processing unit 55 determines whether or not the first count number N1 is “1”. Is determined (step S12). When the first count number N1 is “1” (step S12: Yes), the control unit 5 shifts the process to step S13. On the other hand, when the first count number N1 is not “1” (step S12: No), the control unit 5 shifts the process to step S14.

  When the first count number N1 is “1” (step S12: Yes), the control unit 5 executes a process of invalidating the clear operation by the user, and shifts the process to step S16.

  On the other hand, when the first count number N1 is not “1” (step S12: No), the control unit 5 determines whether or not the second count number N2 is “1” by the number determination processing unit 55 (step S12). S14). When the second count number N2 is “1” (step S14: Yes), the control unit 5 shifts the process to step S15. On the other hand, when the second count number N2 is not “1” (step S14: No), the control unit 5 ends the operation invalidation process.

  When the second count number N2 is “1” (step S14: Yes), the control unit 5 executes a process of invalidating the cancel operation by the user, and shifts the process to step S16.

  When the invalidation process of the clear operation or the cancel operation is executed (step S13 or S15), the control unit 5 clears the first count number N1 and the second count number N2 (step S16). Specifically, the count processing unit 54 clears the first count number N1 incremented in step S61 and the second count number N2 incremented in step S81 (see FIGS. 10 and 11). When the process of step S16 ends, the control unit 5 ends the operation invalidation process.

  In addition, in the operation invalidation process illustrated in FIGS. 9 to 12, the touch operation is enabled when the touch operation is performed twice on the operation button for executing the cancel process or the end process such as “clear” or “cancel”. It was. However, the touch operation with respect to the operation button for executing the cancel process or the end process such as “clear” or “cancel” is performed a predetermined number of times (for example, 3 times, 4 times, etc.) from 3 times or more. When performed, the touch operation may be validated.

  In the operation invalidation process, if a touch operation is performed on an operation button that executes a cancel process or an end process such as “clear” or “cancel” before the specified time elapses, the touch operation is invalidated unconditionally. This is considered as another embodiment. In addition, the touch operation in the other embodiment may include not only a single tap but also a double tap and a long tap.

  In addition, the present invention provides not only an image forming apparatus but also a touch screen, and an image display apparatus in which operation buttons associated with the specific process such as a cancel process or an end process are displayed on the touch screen, and the image display apparatus It can be applied to various devices including

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 13 Image forming part 4 Touch screen 5 Control part 51 2nd operation determination process part 52 Time measurement process part 53 Elapsed time determination process part 54 Count process part 55 Count determination process part 56 Condition determination process part 57 Operation invalid process part 7 Copy setting screen 71 Paper size setting screen 72 Color setting screen 73 Aggregation setting screen 74 Other item setting screen 83, 84 Third operation button 9 Copy instruction screen 92, 93 Sixth operation button

Claims (5)

A touch screen displaying a specific operation button associated with a predetermined specific process that can be executed;
An operation determination processing unit that determines whether or not a touch operation has been performed on the specific operation button;
A condition determination processing unit that determines whether or not a predetermined specific condition is satisfied when it is determined by the operation determination processing unit that a touch operation has been performed on the specific operation button;
An operation invalidation processing unit that executes a process of invalidating a touch operation on the specific operation button when the condition determination processing unit determines that the specific condition is satisfied;
An image display device comprising: A clock processing unit for measuring an elapsed time after the display screen is changed to the specific display screen displaying the specific operation button;
A process for determining whether or not the elapsed time measured by the time measurement processing unit is less than a predetermined specific time when it is determined by the operation determination processing unit that a touch operation has been performed on the specific operation button. A time determination processing unit;
Further comprising
The image display apparatus according to claim 1, wherein the specific condition is that the elapsed time determination processing unit determines that the elapsed time is less than the specific time.   The image display device according to claim 2, wherein the specific condition is that the specific operation button is associated with a cancel process or an end process that is the specific process. A count processor that counts the number of times the elapsed time is determined to be less than the specific time by the elapsed time determination processor;
A number of times determination processing unit for determining whether or not the number of times of determination counted by the count processing unit is a predetermined number of operations determined in advance from the number of times of two or more;
Further comprising
The image display device according to claim 3, wherein the condition determination processing unit determines that the specific condition is satisfied when the number determination processing unit determines that the determination number is less than the prescribed operation number. An image forming unit for forming an image on printing paper;
An image display device according to any one of claims 1 to 4,
An image forming apparatus comprising:

Images