JP5222822B2 - Display device, image forming apparatus equipped with the same, and electronic apparatus - Google Patents

Description

  The present invention relates to a display device that has a touch panel function and displays items specified by the operation as a list. The present invention also relates to an image forming apparatus and an electronic device equipped with the display device.

  In recent years, a so-called multi-function machine having functions such as a copying machine, a printer, a facsimile machine, and a scanner has become popular. Such an image forming apparatus has not only an image forming function but also a communication function for transmitting image data to a remote place via a telephone line or a network line.

  The image data communication function is provided with a so-called address book for managing transmission destinations. The address book is a list in which a plurality of destinations as items are arranged. The communication function sets the address and transmits the image data based on the destination information specified by the user searching the address book. Generally in an image forming apparatus, a display device having a touch panel function is provided on the front surface of the image forming device, and an address book is displayed on the display device.

  An example of a display device that displays an address book can be found in Patent Document 1. The scanner display device (touch screen) described in Patent Document 1 includes a transmission destination designation screen, on which an address list display area and up / down buttons of the list are arranged. Address information for five cases can be displayed in the address list display area. To display other addresses, it is necessary to move the list up and down with the up and down buttons. The same operation is also required for other electronic devices equipped with an address book such as a mobile phone and a PDA.

JP 2008-124751 A (Page 7-8, FIG. 5)

  Since the scanner display device described in Patent Document 1 uses the up and down buttons to change the display of the address list, it is very difficult to search for addresses. In recent years, with the development of technology, the memory capacity has also increased, and for example, it is not uncommon to have a device capable of storing more than 1000 destination information. Therefore, the scanner display device described in Patent Document 1 has poor operability in the address search, and the search may be prolonged, which may cause discomfort to the user.

  The present invention has been made in view of the above points, and provides a display device in which items can be narrowed down, desired items can be easily displayed in a list, and operability related to item search is improved. For the purpose. It is another object of the present invention to provide an image forming apparatus and an electronic apparatus which are equipped with such a display device and have good usability.

  In order to solve the above-described problems, the present invention provides an operation display unit that has a touch panel unit that displays a plurality of input keys on a screen and receives key operations and displays a list in which a plurality of items are arranged. A key operation detection unit that detects an operation on the input key; and an input key that is operated based on information from the key operation detection unit, and the item that is displayed on the list on the operation display unit A plurality of first input keys arranged to narrow down, a plurality of second input keys arranged to further narrow down the items displayed by operating the first input key and displayed in the list; And a control unit that displays them side by side in two rows or two columns.

  According to this configuration, the display device simultaneously displays a list in which a plurality of items are arranged, and a plurality of first input keys and a plurality of second input keys for narrowing down items to be displayed on the list. .

  Further, in the display device having the above-described configuration, the control unit causes the operation display unit to place one of the plurality of first input keys and the plurality of second input keys that has been operated immediately before the list. It was decided to be displayed. According to this configuration, the input key operated by the user immediately before and the items narrowed down by the operation and displayed as a list are brought closer.

  Further, in the display device having the above-described configuration, the control unit causes the operation display unit to display the plurality of first input keys and the plurality of second input keys in two rows above and below the list. One of the plurality of first input keys and the plurality of second input keys operated immediately before is displayed on the upper side.

  Further, in the display device having the above-described configuration, the control unit causes the operation display unit to display the plurality of first input keys and the plurality of second input keys in two rows above and below the list. The plurality of second input keys are displayed on the upper side by operating the plurality of first input keys.

  In the display device having the above-described configuration, the control unit causes the operation display unit to display one of the plurality of first input keys and the plurality of second input keys that has been operated immediately before larger than the other. It was. According to this configuration, the input key operated immediately before by the user can be identified more easily than the other.

  In the display device having the above-described configuration, the plurality of first input keys and the plurality of second input keys have different shapes and / or colors. According to this configuration, the difference between the input keys can be easily identified.

  In the present invention, the display device having the above configuration is mounted on an image forming apparatus and an electronic apparatus.

  According to the configuration of the present invention, the display device simultaneously displays a list in which a plurality of items are arranged, and a plurality of first input keys and a plurality of second input keys for narrowing down items to be displayed on the list. By operating these input keys, items can be narrowed down and desired items can be easily displayed in the list. Therefore, it is possible to provide a display device in which operability related to item search is improved. In addition, it is possible to provide an image forming apparatus and an electronic apparatus which are equipped with such a display device and have good usability.

1 is a schematic vertical sectional front view of an image forming apparatus equipped with a display device according to a first embodiment of the present invention. FIG. 2 is a block diagram illustrating a configuration of the image forming apparatus in FIG. 1. FIG. 2 is a front view of an operation panel of the image forming apparatus illustrated in FIG. 1. It is a front view of the display apparatus of the operation panel shown in FIG. It is a front view showing the display change of the 1st input key of the display apparatus of FIG. FIG. 5 is a front view of the same display device as FIG. 4 and shows a state in which a plurality of first input keys and a plurality of second input keys are arranged. FIG. 7 is a front view of a display device similar to FIG. 6 and shows a state in which a plurality of second input keys are arranged in the upper stage. FIG. 7 is a front view of the display device similar to FIG. 6 and shows a state where a first input key different from FIG. 6 is selected. It is a flowchart which shows the operation | movement which concerns on the transmission destination search in a display apparatus. It is a front view of the display apparatus which concerns on the 2nd Embodiment of this invention. FIG. 11 is a front view of a display device similar to FIG. 10 and shows a state in which a plurality of first input keys and a plurality of second input keys are arranged. FIG. 11 is a front view of the same display device as FIG. 11 and shows a state in which a plurality of second input keys are arranged in the upper stage.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  First, an image output operation of the image forming apparatus equipped with the display device according to the first embodiment of the present invention will be described while explaining the outline of the structure with reference to FIGS. 1 and 2. FIG. 1 is a schematic vertical sectional front view of an image forming apparatus, and FIG. 2 is a block diagram showing a configuration of the image forming apparatus. In FIG. 1, solid arrows indicate the paper conveyance path and conveyance direction, and alternate long and short dash arrows indicate the laser beam L.

  As shown in FIG. 1, a paper feed cassette 3 is disposed below the inside of the main body 2 of the image forming apparatus 1. The paper feed cassette 3 stores and accommodates paper P such as cut paper before printing. The sheets P are separated and sent one by one toward the upper left of the sheet feeding cassette 3 in FIG. The paper feed cassette 3 can be pulled out horizontally from the front side of the main body 2.

  A first paper transport unit 4 is provided in the main body 2 and on the left side of the paper feed cassette 3. The first paper transport unit 4 is formed substantially vertically along the left side surface of the main body 2. Then, the first paper transport unit 4 receives the paper P sent out from the paper feed cassette 3 and transports it to the transfer unit 5 vertically upward along the left side surface of the main body 2.

  A registration roller pair 6 is provided on the sheet conveyance path immediately upstream of the transfer unit 5. The registration roller pair 6 corrects the oblique feeding so that the toner image can be accurately transferred to the sheet P going to the transfer unit 5, and sends it out at a suitable timing.

  A manual paper feed unit 7 is provided above the paper feed cassette 3 and on the right side, which is the side opposite to the left side of the main body 2 where the first paper transport unit 4 is formed. In the manual paper feed unit 7, paper of a size that is not in the paper feed cassette 3, or paper that is to be fed manually one by one, such as thick paper and OHP sheet, is placed.

  A second paper transport unit 8 is provided on the left side of the manual paper feed unit 7. The second paper transport unit 8 is located immediately above the paper feed cassette 3, extends substantially horizontally from the manual paper feed unit 7 to the first paper transport unit 4, and joins the first paper transport unit 4. The second paper transport unit 8 receives the paper fed from the manual paper feed unit 7 and transports the paper to the first paper transport unit 4 substantially horizontally.

  On the other hand, a document conveying device 9 is provided on the upper surface of the main body 2 of the image forming apparatus 1, and an image reading device 10 is provided below the document conveying device 9. When a user copies a document, a document on which images such as characters, graphics, and patterns are drawn is loaded on the document transport device 9. The document feeder 9 separates the documents one by one and sends them out, and the image reading device 10 reads the image data.

  The reading of the document image, that is, the start of image formation is executed using the operation panel 30 provided on the front side of the image reading apparatus 10 at the top of the main body 2. The operation panel 30 accepts printing condition settings such as the type and size of paper used for printing by the user, enlargement / reduction, and presence / absence of double-sided printing, and transmission destination settings in a facsimile. The detailed configuration of the operation panel 30 will be described later.

  Information on the image data of the document is sent to the exposure device 11 disposed above the second sheet transport unit 8 and in the center of the main body 2. The exposure apparatus 11 irradiates the image forming unit 12 with laser light L controlled based on the image data.

  An image forming unit 12 and a transfer unit 5 are provided above the first paper transport unit 4 and on the left side of the exposure device 11. In the image forming unit 12, an electrostatic latent image of a document image is formed by the laser light L irradiated by the exposure device 11, and a toner image is developed from the electrostatic latent image. The toner is supplied to the image forming unit 12 from a toner container 13 provided above the exposure device 11. The toner image formed by the image forming unit 12 is transferred by the transfer unit 5 to the paper P sent in synchronization by the registration roller pair 6.

  A fixing device 14 is provided above the transfer unit 5. The paper P carrying the unfixed toner image in the transfer unit 5 is sent to the fixing device 14, and the toner image is heated and pressed by the heat roller and the pressure roller to be fixed.

  A sheet guide device 15 is provided above the fixing device 14. The paper P discharged from the fixing device 14 is discharged from the paper guide device 15 to the in-body paper discharge portion 16 provided in the image forming apparatus 1 when double-sided printing is not performed.

  The discharge port portion from which the paper P is discharged from the paper guide device 15 toward the in-body paper discharge portion 16 serves as a switchback portion 17. When performing duplex printing, the switchback unit 17 switches the transport direction of the paper P discharged from the fixing device 14. Then, the paper P passes through the paper guide device 15 and is sent downward through a double-sided printing paper conveyance path 18 provided on the left side of the fixing device 14 and on the left side of the transfer unit 5, and again the first paper conveyance unit. 4 is sent to the transfer section 5.

  In addition, the image forming apparatus 1 includes a main control unit 19 composed of a CPU 20, a storage unit 21, and other electronic components (not shown) in the main body 2 as shown in FIG. . The main control unit 19 uses the CPU 20 as a central processing unit, and controls components such as the image reading device 10, the image forming unit 12, and the fixing device 14 based on programs and data stored and input in the storage unit 21. A series of image forming operations is realized. The main control unit 19 receives a condition setting related to the operation of the image forming apparatus 1 by the user from the operation panel 30.

  Further, the image forming apparatus 1 includes a communication unit 22 for exchanging image data with an external device using a telephone line or a network line. The communication unit 22 includes a facsimile communication unit 23 that communicates using a telephone line, and a network I / F (interface) unit 24 that communicates using a network line.

  Next, a detailed configuration of the operation panel 30 will be described with reference to FIGS. 3 to 6 in addition to FIG. 3 is a front view of the operation panel 30 of the image forming apparatus 1, FIG. 4 is a front view of the display device of the operation panel 30, FIG. 5 is a front view showing display change of the first input key of the display device, and FIG. 4 is a front view of a display device similar to FIG. 4, showing a state in which a plurality of first input keys and a plurality of second input keys are arranged.

  As shown in FIGS. 2 and 3, the operation panel 30 includes a numeric keypad 31, a start key 32, a stop key 33, a reset key 34, an enter key 35, and a display device 40.

  The numeric keypad 31, the start key 32, the stop key 33, the reset key 34, and the enter key 35 are arranged in the area on the right side of the operation panel 30 as shown in FIG. The numeric keypad 31 is a key for accepting numeric input. The start key 32 is a key for receiving start instructions for various operations. The stop key 33 is a key for accepting stop instructions for various operations. The reset key 34 is a key for receiving reset instructions for various settings. The enter key 35 has the same function as a so-called “OK” instruction that permits various settings.

  The display device 40 is disposed at the center of the operation panel 30. As shown in FIG. 2, the display device 40 includes an operation display unit 41, a key operation detection unit 42, a display control unit 43, and a storage unit 44.

  The operation display unit 41 includes a liquid crystal display unit 41a and a touch panel unit 41b. The liquid crystal display unit 41a displays items such as input, settings, and instructions using liquid crystal. The touch panel unit 41b is placed over the liquid crystal display unit 41a and accepts selection of items displayed on the liquid crystal display unit 41a and key input when the user touches with a finger or the like.

  The key operation detection unit 42 detects contact of the user's finger or the like on the touch panel unit 41b. Information obtained by the key operation detection unit 42 from the touch panel unit 41 b, that is, information on user key input to the touch panel unit 41 b is transmitted to the display control unit 43.

  The display control unit 43 is configured by electronic parts such as an IC (not shown), and is a control device that controls the display device 40 based on control by the main control unit 19. In response to a control command from the main control unit 19, the display control unit 43 sets items to be displayed, types of input keys, and layout based on programs and data stored in the storage unit 21 or the storage unit 44, thereby displaying the display device 40. Display control of the operation display unit 41. Further, the display control unit 43 specifies the input key operated by the user based on the information from the key operation detection unit 42 and transmits it to the main control unit 19 as a user operation instruction.

  Here, the display device 40 can display an address book screen (Address Book) 50 shown in FIG. 4, which can be used in cooperation with the communication unit 22, on the operation display unit 41. The address book screen 50 displays a list of a plurality of destination information as the items. Information relating to the address book layout and destination information are stored in the storage unit 21 or the storage unit 44. The image forming apparatus 1 transmits the image data to the transmission destination selected and set by the user from the plurality of transmission destinations displayed on the address book screen 50.

  On the address book screen 50, a destination list display section 51, a scroll key 52, a narrowing key 53, a transmission method selection key 54, a cancel key 55, and an OK key 56 are arranged.

  The transmission destination list display unit 51 is provided in a relatively wide area at a substantially central portion of the address book screen 50. The transmission destination list display unit 51 displays a list of a plurality of pieces of transmission destination information registered in advance in the vertical direction. As the transmission destination information, detailed information related to communication such as a registration number, a name (name), a telephone number, and a mail address is registered. The display area of the transmission destination list display unit 51 is, for example, 5 transmission destination information.

  The scroll key 52 is arranged on the right side of the transmission destination list display section 51, and the narrow-down key 53 is arranged below the transmission destination list display section 51. Both the scroll key 52 and the narrow-down key 53 are used to display desired destination information that is not displayed in the display area of the destination list display unit 51 on the destination list display unit 51. The scroll key 52 scrolls the transmission destination list of the transmission destination list display unit 51 in the vertical direction.

  The narrow-down key 53 includes a plurality of input keys including a first input key 57, a numeric key 58, and an alphabet key 59. Each first input key 57 is set and indicated with an initial of each line from “A line” to “Wa line” in the Japanese syllabary table. The first input keys 57 are arranged to narrow down transmission destination information to be displayed on the transmission destination list.

  Here, in the present embodiment, as an example, “first letter of each line of the Japanese syllabary table” is set to each of the plurality of first input keys 57, which will be described below. As shown in FIG. 5, by pressing the numeric key 58, “numbers from 0 to 9” are input to the first input key 57, and by pressing the alphabet key 59, “alphabet from A to Z” is respectively input to the first. The key 57 can be set. It should be noted that by pressing the kana key 60 in these states, it is possible to set “first letter of each line of the Japanese syllabary table” to the first input key 57 again.

  When one of the first input keys 57 in which “the first letter of each line of the Japanese syllabary table” shown in FIG. 4 is pressed, a plurality of second input keys 61 are changed to the first input keys 57 as shown in FIG. It is displayed below In the second input key 61, “5 characters in each line of the Japanese syllabary table” corresponding to the pressed first input key 57 is set and described. For example, as shown in FIG. 6, when “ka” is pressed among the plurality of first input keys, “ka”, “ki”, “ku”, “ke”, and “ko” are the plurality of second input keys 61. It is displayed immediately below the 1 input key 57. The second input keys 61 are arranged to further narrow down the transmission destination information displayed by narrowing down the first input key 57 and displayed in the transmission destination list. The configuration and display method of the first input key 57 and the second input key 61 will be described in detail later.

  The transmission method selection key 54 is arranged at the bottom of the address book screen 50. The image forming apparatus 1 includes a plurality of transmission methods such as “E-mail”, “facsimile (FAX)”, “Internet facsimile (i-FAX)”, and the like. It is set for each input key. The user uses the transmission method selection key 54 to select a desired image data transmission method.

  If the transmission method selection key 54 is operated before selecting and setting the transmission destination, transmission is performed in advance without operating the first input key 57 and the second input key 61 depending on the presence or absence of transmission destination information corresponding to the transmission method. The destination information displayed in the destination list can be narrowed down.

  Both the cancel key 55 and the OK key 56 are arranged at the lower right end of the address book screen 50. The cancel key 55 is used when the selected input is canceled, and the OK key 56 is used when the input is permitted.

  Next, an operation method related to a destination search on the address book screen 50 of the display device 40 will be described using FIGS. 7 to 9 in addition to FIGS. 2, 4 and 6, along the flow shown in FIG. 9. To do. 7 is a front view of the display device 40 similar to FIG. 6 and shows a state in which a plurality of second input keys 61 are arranged in the upper stage, and FIG. 8 is a front view of the display device 40 similar to FIG. 9 shows a state where the first input key 57 different from that shown in FIG. 6 is selected, and FIG.

  In the following description using these drawings, it is assumed that the initial state is not a state in which the transmission destination information displayed on the transmission destination list is narrowed down in advance by operating the transmission method selection key 54. Further, the following description is about operations until the destination information is narrowed down by operating the first input key 57 and the second input key 61 and a desired destination displayed on the destination list display unit 51 is selected and set. Explains.

  When it is necessary to select the transmission destination of the image data in the image forming apparatus 1 (start of FIG. 9), the initial state of the address book screen 50 shown in FIG. 4 is displayed on the operation display unit 41 of the display device 40. (Step # 101 in FIG. 9). At this time, the destination list display section 51 of the address book screen 50 displays the destination information registered in the address book in the order of the Japanese syllabary from the top. Since the display area of the transmission destination list display section 51 is for five pieces of transmission destination information, only five pieces from the top are displayed.

  Subsequently, when there is an input key operation by the user (step # 102), the display control unit 43 determines whether or not the input key operated by the user based on information from the key operation detection unit 42 is the first input key 57. Determine (step # 103).

  When the input key is not the first input key 57 (No in step # 103), the display control unit 43 selects the destination specified by the input key, that is, the destination displayed on the destination list display unit 51. It is determined whether or not (step # 104). If the input key is the destination designation in step # 104 (Yes in step # 104), the display control unit 43 sets the destination (step # 105) and ends the flow related to the selection of the destination (step # 105). FIG. 9 end). If the input key is not designated as the transmission destination in step # 104 (No in step # 104), the display control unit 43 again enters the standby state for the input key operation (step # 102).

  On the other hand, when the input key is the first input key 57 in step # 103, for example, “ka” in FIG. 4 (Yes in step # 103), the display control unit 43 displays the address book screen 50 shown in FIG. Change as shown. That is, the display control unit 43 displays the transmission destination information corresponding to “ka” of the pressed first input key 57 on the transmission destination list display unit 51 in order from the top (step # 106).

  Then, the display control unit 43 displays the operated first input key 57 group immediately below the transmission destination list display unit 51, and further displays the second input key 61 group corresponding to “ka line” below the same (step S1). # 106). Thus, since the display control unit 43 displays the plurality of first input keys 57 and the plurality of second input keys 61 side by side in two upper and lower rows, these input keys are displayed at the same time, and the user can send destination information. Narrowing can be performed easily. In addition, since the display control unit 43 displays one of the plurality of first input keys 57 and the plurality of second input keys 61 that has been operated immediately before in the location close to the destination list display unit 51, the user can The selected input key can be easily identified, and the operability related to selection of the transmission destination is improved.

  In addition, the display control unit 43 displays each key of the first input key 57 group larger than each key of the second input key 61 group, and “ka” of the operated first input key 57 is different from other keys. Display in color. This makes it easier for the user to identify the input key that is currently selected, and the operability related to the selection of the transmission destination is further improved.

  The plurality of first input keys 57 and the plurality of second input keys 61 are different in shape from each other, the plurality of first input keys 57 has a substantially rectangular shape, and the second input key 61 has an oval shape. Further, the plurality of first input keys 57 and the plurality of second input keys 61 may be displayed so that the colors are different from each other. By displaying in a color different from that of the first input key 57, it becomes easier to identify.

  Subsequently, when there is an input key operation by the user (step # 107), the display control unit 43 determines whether or not the input key is a transmission destination designation (step # 108). If the input key is the destination designation in step # 108 (Yes in step # 108), the display control unit 43 sets the destination (step # 105) and ends the flow relating to the selection of the destination (step # 105). FIG. 9 end).

  If the input key is not designated as a transmission destination in step # 108 (No in step # 108), the display control unit 43 determines whether or not the input key is the same as the first input key 57 that was operated immediately before. It is determined whether or not (step # 109). When the input key is “KA” of the first input key 57 in Step # 109 (Yes in Step # 109), the display control unit 43 displays the initial state of the address book screen 50 shown in FIG. This is displayed (step # 101 in FIG. 9).

  On the other hand, when the input key is not “KA” of the first input key 57 in Step # 109 (No in Step # 109), the display control unit 43 determines whether or not the input key is the second input key 61. (Step # 110).

  When the input key is the second input key 61, for example, “ku” in Step # 110 (Yes in Step # 110), the display control unit 43 changes the address book screen 50 shown in FIG. 6 as shown in FIG. . That is, the display control unit 43 displays the transmission destination information corresponding to “ku” of the pressed second input key 61 on the transmission destination list display unit 51 in order from the top (step # 111).

  Then, the display control unit 43 displays the second input key 61 group corresponding to the operated “ka line” just below the transmission destination list display unit 51 and the first input key 57 group further below that (steps in the same step). # 111). In addition, the display control unit 43 displays each key of the second input key 61 group larger than each key of the first input key 57 group, and “ku” of the operated second input key 61 is different from other keys. Display in color. Then, the display control unit 43 again enters the standby state for the input key operation (step # 107).

  If the input key is not the second input key 61 in step # 110 (No in step # 110), the display control unit 43 determines whether or not the input key is the first input key 57 (step # 112). ). If the input key is not the first input key 57 in step # 112, the display control unit 43 enters the standby state for the input key operation (step # 107) again.

  When the input key is the first input key 57 in step # 112, for example, “ha” (Yes in step # 112), the display control unit 43 changes the address book screen 50 shown in FIG. 7 as shown in FIG. . That is, the display control unit 43 displays the transmission destination information corresponding to “ha” of the pressed first input key 57 on the transmission destination list display unit 51 in order from the top (step # 106).

  Then, the display control unit 43 displays the operated first input keys 57 group immediately below the transmission destination list display unit 51, and further displays the second input keys 61 group corresponding to “ha-row” below the same (step S1). # 106). Further, the display control unit 43 displays each key of the first input key 57 group larger than each key of the second input key 61 group, and “ha” of the operated first input key 57 is different from other keys. Display in color. Then, the display control unit 43 again enters the standby state for the input key operation (step # 107).

  Next, a display device according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a front view of the display device, FIG. 11 is a front view of the display device similar to FIG. 10, and shows a state in which a plurality of first input keys and a plurality of second input keys are arranged. FIG. 11 is a front view of the same display device as FIG. 11 and shows a state in which a plurality of second input keys are arranged in the upper stage. Note that the basic configuration of this embodiment is the same as that of the first embodiment described with reference to FIGS. 1 to 9, so the configuration common to the first embodiment is described in the drawings, and The description will be omitted.

  The display device 40 according to the second embodiment is provided on the operation panel 30 of the image forming apparatus 1 intended for use by English-speaking users, and all of the address book screen 50 is written in English as shown in FIG. Yes. Note that the same display is performed when the alphabet key 59 is pressed in FIG. 4 described in the first embodiment.

  In the destination list display section 51 of the address book screen 50, the destination information registered in the address book is displayed in alphabetical order from the top. Since the display area of the transmission destination list display section 51 is for five pieces of transmission destination information, only five pieces from the top are displayed.

  As shown in FIG. 10, the narrow-down key 53 includes a plurality of input keys including a first input key 57 and a number key 58. Each of the first input keys 57 is set and described by dividing approximately 26 alphabetic characters into three. That is, it begins with “ABC” and “DEF”, and has two characters “YZ” only at the end. The first input keys 57 are arranged in order to narrow down destination information displayed in the destination list and whose names (names) are expressed in alphabets.

  In the state shown in FIG. 10, when one of the first input keys 57 set with “3 alphabets or 2 letters”, for example, “PQR” is pressed, “1” of the first input key 57 as shown in FIG. The destination information corresponding to “PQR” is displayed on the destination list display unit 51 in order from the top.

  Then, the first input key 57 group is displayed immediately below the transmission destination list display unit 51, and the second input key 61 group corresponding to “PQR” of the first input key 57 is further displayed below that. In the second input key 61, “one alphabet character at a time” corresponding to “PQR” of the pressed first input key 57 is set and described. That is, “P”, “Q”, and “R” are displayed as a plurality of second input keys 61 immediately below the plurality of first input keys 57, respectively. Further, each key of the first input key 57 group is displayed larger than each key of the second input key 61 group, and “PQR” of the operated first input key 57 is displayed in a color different from other keys. .

  When the second input key 61, for example, “R” is pressed in the state shown in FIG. 11, the destination information corresponding to “R” of the second input key 61 is displayed in order from the top as shown in FIG. Displayed on the part 51.

  A plurality of second input keys 61 “P”, “Q”, and “R” are displayed immediately below the transmission destination list display section 51, and the first input keys 57 group is further displayed below that. Each key of the second input key 61 group is displayed larger than each key of the first input key 57 group, and “R” of the operated second input key 61 is displayed in a different color from the other keys.

  According to the configuration of the embodiment of the present invention, the display device 40 includes a transmission destination list in which a plurality of pieces of transmission destination information are arranged, and a plurality of first input keys for narrowing down transmission destinations displayed in the transmission destination list. 57 and a plurality of second input keys 61 are displayed simultaneously. As a result, by operating those input keys, the destinations can be narrowed down and the desired destinations can be easily displayed in the destination list. Therefore, it is possible to provide the display device 40 in which the operability related to the transmission destination search is improved. In addition, it is possible to provide the image forming apparatus 1 equipped with such a display device 40 and having good usability.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  For example, in the above embodiment of the present invention, the display device 40 mounted on the image forming apparatus 1 has been described as an example. However, the device to which the invention is applied is not limited to the image forming apparatus, and image forming You may decide to mount the display apparatus of this invention in other electronic devices provided with address books, such as a mobile telephone and PDA, other than an apparatus.

  The image forming apparatus 1 equipped with the display device 40 is an image forming apparatus for monochrome printing using only black toner, but the image forming apparatus to which the invention is applied is not limited to such a model. Alternatively, the image forming apparatus may be a tandem type or rotary rack type color printing that includes an intermediate transfer belt and can form an image by superimposing a plurality of colors.

  The present invention can be used in a display device that has a touch panel function and displays items specified by the operation as a list.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 19 Main control part 30 Operation panel 40 Display apparatus 41 Operation display part 42 Key operation detection part 43 Display control part (control part)
50 Address Book Screen 51 Destination List Display Portion 53 Filter Key 57 First Input Key 61 Second Input Key

Claims (5)

An operation display unit that displays a plurality of input keys on a screen and receives a key operation and displays a list in which a plurality of items are arranged;
A key operation detection unit for detecting an operation on the input key;
A plurality of first input keys arranged to narrow down the items to be displayed on the operation table, the input keys operated based on information from the key operation detector; A plurality of second input keys that are displayed by operating the first input key and arranged to further narrow down the items to be displayed on the list are displayed in two rows above and below the list, One of the plurality of first input keys and the plurality of second input keys operated immediately before is displayed on the upper side, and the first input key or the second input key operated immediately before is displayed as another input key. A control unit for displaying in a color different from
A display device comprising: 2. The control unit according to claim 1, wherein one of the plurality of first input keys and the plurality of second input keys operated immediately before is displayed larger than the other on the operation display unit. Display device. The display device according to claim 1, wherein the plurality of first input keys and the plurality of second input keys have different shapes and / or colors . An image forming apparatus comprising the display device according to claim 1. An electronic apparatus comprising the display device according to any one of claims 1 to 3.

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