JP5938990B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus. More specifically, the present invention relates to a printing apparatus that can notify an error.

  Conventionally, notification of information such as errors has been widely performed using a display unit or sound.

JP2007-320051A

  However, conventionally, when a plurality of pieces of error information are notified, for example, the notification is performed by periodically displaying the error information on one display unit (Patent Document 1). Therefore, the user cannot confirm a plurality of errors at a time, which is inconvenient. On the other hand, there is a problem that using a large display unit for notifying a plurality of errors is not preferable from the viewpoint of power saving.

  SUMMARY An advantage of some aspects of the invention is that it provides a printing apparatus capable of efficiently notifying a user of a plurality of error information while saving power. .

  In order to solve this problem, a printing apparatus includes a light emitting unit that performs both light emission indicating one error and light emission indicating another error when one error and another error occur. Or a detection means for detecting whether or not an indication of detailed information relating to at least one of an error name and a cancellation method is instructed with respect to another error, and a display for displaying an indication of detailed information with respect to the indicated one or other error And a control means. When the detection means detects a display instruction related to detailed information by the detection means, the control means supplies power to the display means and starts display related to the detailed information by the display means. To do.

  According to such a configuration, the user can know the detailed information that is at least one of the error name and the canceling method for one or other errors according to the instruction, and can achieve compatibility with power saving. It is expected.

  The printing apparatus disclosed in the present specification further includes setting means for setting a light emission mode indicating the one error and a light emission mode indicating the other error.

  In this way, since the light emission mode indicating an error can be set, it can be expected that the user can easily understand what kind of error it is.

  Further, in the printing apparatus disclosed in the present specification, the light emitting unit includes a plurality of light emitting units, and the control unit emits light from the different light emitting units in response to the one or other error. It is characterized by that.

  In this way, since light emission is performed using different light emitting units corresponding to one and other errors, it can be expected that the user can easily understand that a plurality of errors have occurred.

  The printing apparatus disclosed in this specification displays whether the detailed information displayed by the display unit is detailed information for one or another error.

  In this way, the user can easily understand which error detailed information is displayed on the display means for one and other errors.

  Further, in the printing apparatus disclosed in the present specification, when the control unit displays detailed information for one or other errors on the display unit, the display unit displays light emission indicating an error by the light emitting unit. Switching to light emission indicating that the detailed information is displayed on the means.

  In this way, it becomes easier for the user to understand which detailed information is displayed on the display means for one and other errors by switching the light emission.

  Further, in the printing apparatus disclosed in this specification, whether or not the control unit supplies power to the display unit when an error occurs and whether or not the display unit starts to display detailed information is determined. It is determined according to the type.

  In this way, it is possible to determine whether or not to display the detailed information by supplying the power of the display unit according to the type of error.

  In addition, in the printing apparatus disclosed in this specification, when the control unit is supplied with power to the display unit when an error occurs, the display unit starts displaying detailed information, and the display unit When power is not supplied, the display unit does not start display related to detailed information.

  In this way, it is expected that more power saving can be realized because less power is supplied to the display means.

  Further, the printing apparatus disclosed in the present specification is characterized in that, when the display unit displays information related to detailed information on the error by the display unit, the power supply to the light emitting unit is cut off. To do.

  In this way, error notification can be switched, and power supply to the light emitting means is cut off even when the display means is used, so that power saving can be expected.

  According to the present invention, it is possible to realize a printing apparatus capable of efficiently notifying a user of a plurality of error information while saving power.

1 is a diagram illustrating an appearance of an MFP according to an embodiment. It is a figure which shows an example of the operation panel concerning embodiment. 1 is a block diagram showing an electrical configuration of an MFP according to an embodiment. It is a flowchart which shows the procedure of the light emission process concerning embodiment. It is a flowchart which shows the procedure of the display process concerning embodiment. It is an example of the table which shows the error information concerning embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of a printing apparatus according to the invention will be described in detail with reference to the accompanying drawings. In the present embodiment, the present invention is applied to a multi-function peripheral (MFP) having a scan function, a print function, and a FAX transmission / reception function.

[MFP configuration]
As shown in FIG. 1, the MFP 100 according to the present embodiment includes an image forming unit 10 that prints an image on a sheet and an image reading unit 20 that reads an image of a document. The image forming method of the image forming unit 10 may be an electrophotographic method or an ink jet method. Further, the image forming unit 10 may be capable of forming a color image and a monochrome image, or may be capable of forming only a monochrome image.

  Further, the image reading unit 20 may be capable of reading a color image and a monochrome image, or may be capable of reading only a monochrome image. According to the present embodiment, it is not essential that both the image forming unit 10 and the image reading unit 20 are provided, and the embodiment can be implemented even if only one of them is provided.

  The MFP 100 includes an operation panel 40 on the front side. FIG. 2 is a diagram schematically showing a characteristic part of the operation panel 40 in FIG. As shown in FIG. 2, the operation panel 40 includes a display unit 41 (an example of display means) formed of a liquid crystal display and various buttons (for example, buttons such as an up / down / left / right key, a cancel key, and a numeric keypad 42). A group of buttons is provided. In the MFP 100, the display unit 41 and a group of buttons including the numeric keypad 42 can display the operation status and input by the user.

  The numeric keypad 42 of the operation panel 40 is provided with LEDs (Light Emitting Diodes) 70a to 70n (an example of light emitting means and light emitting units) inside each key, and each LED 70a to 70n emits light in a plurality of colors. It is possible to do.

[Electric configuration of MFP]
Next, an electrical configuration of MFP 100 will be described. As illustrated in FIG. 3, the MFP 100 includes a control unit 30 including a CPU 31 (an example of a detection unit, a control unit, and a setting unit), a ROM 32, a RAM 33, and an NVRAM (Non Volatile RAM) 34. The control unit 30 is electrically connected to the image forming unit 10, the image reading unit 20, the operation panel 40, the power supply unit 50, and the network interface 37.

  The ROM 32 stores firmware, which is a control program for controlling the MFP 100, various settings, initial values, and the like. The RAM 33 and the NVRAM 34 are used as work areas from which various control programs are read or as storage areas for temporarily storing the read image data.

  The CPU 31 controls each component of the MFP 100 while storing the processing result in the RAM 33 or the NVRAM 34 in accordance with a control program read from the ROM 32 and signals sent from various sensors.

  The power supply unit 50 is electrically connected not only to the control unit 30 but also to the operation panel 40, and supplies or blocks power to the control unit 30 and the operation panel 40. In addition, the switches SW1 and SW2 can supply or cut off power to the display unit 41 and the LED 70 on the operation panel 40, respectively.

  The network interface 37 is an interface that enables communication with other devices. The MFP 100 receives print data transmitted from another device via the network interface 37 and transmits the read image data to the other device.

[Control MFP]
Next, control of MFP 100 will be described.

[Embodiment]
Hereinafter, light emission processing and display processing according to the embodiment will be described with reference to FIGS. 4 to 6.

  When the power supply unit 50 supplies power to the control unit 30, execution of the light emission processing and display processing of the embodiment is started by the CPU 31 and is periodically executed.

  First, the light emission process will be described with reference to FIGS.

  First, in S101, the CPU 31 determines whether an error has occurred. If it is determined that no error has occurred (S101: No), the light emission process is terminated. On the other hand, if it is determined that an error has occurred (S101: Yes), the process proceeds to S102.

  Note that the state in which an error has occurred represents not only the state in which the error has occurred for the first time, but also the state in which the error has not yet been released since the error occurred.

  In S102, the CPU 31 determines whether or not the LED 70 (an example of the light emitting unit and the light emitting unit) inside the numeric keypad 42 needs to be turned on to indicate an error (an example of the control unit).

  In S101, when it is determined for the first time that an error has occurred, that is, when the error has occurred (S101: Yes), it is determined that the LED 70 needs to be turned on. If it is not the first time that it is determined that an error has occurred, that is, if the light emission process is executed again in a state where the error has not yet been released and an error has been determined in S101, This will be described in detail later.

  If it is not necessary to turn on the LED 70 (S102: No), the light emission process is terminated. When it is necessary to turn on the LED 70 (S102: Yes), the process proceeds to S103.

  In S103, the CPU 31 issues an instruction to the power supply unit 50, thereby supplying power to the LED 70 and turning on the LED 70.

  This is because the CPU 31 refers to an error table as shown in FIG. 6 as an example, and the LED 70 inside the numeric keypad 42 is turned on according to the information in the error table. The error table in FIG. 6 is an error table indicating the content of an error that has occurred and a method for notifying each error, and is stored in the NVRAM 34 or ROM 33 in advance.

  For example, if the error that has occurred is “Toner Empty”, referring to “Toner Empty” in the error table of FIG. 6, the lighting key is “2”, the lighting method is “lit”, and the lighting color is “red”. It has become. Therefore, according to this error table, the CPU 31 turns on the LED 70b inside the “2” key of the numeric keypad 42 in red as shown by the hatched portion in FIG.

  When multiple errors have occurred, for example, when “Paper Low” has occurred, referring to “Paper Low” in the error table of FIG. 6, the lighting key is “7” and the lighting method is “lightly lit”. The lighting color is “white”. Therefore, according to this error table, the CPU 31 illuminates the LED 70g in the “7” key of the numeric keypad 42 in white as shown by the shaded portion in FIG.

  Note that the user can set the lighting method such as the lighting location and color of the LED 70 in the numeric keypad 42 when an error occurs, via the operation panel 40. For example, if the “Toner Empty” error is instructed to turn on the “5” key of the numeric keypad 42 in blue through the operation of the operation panel 40, the CPU 31 (an example of setting means) responds to the instruction. The information of the error table is rewritten based on this and stored in the NVRAM 34 or the ROM 33 to set the lighting mode indicating an error in the LED 70.

  Thereby, the user can set so that it is easy to predict what kind of error the LED 70 has when the lighting location and the lighting color are viewed.

  In subsequent S104, the CPU 31 detects whether or not a display related to detailed information that is at least one of an error name and a cancellation method is instructed by pressing the numeric key 42 (an example of a detection unit). Here, the keypad 42 is pressed when a lighted key is pressed to indicate an error. When a key that is not lighted is pressed, an instruction to display detailed information is displayed. Suppose not.

  For example, when the LED 70b and LED 70g inside the “2” and “7” keys of the numeric keypad 42 are lit, if the “3” key is pressed, an error detailed information display instruction is given. If the “2” key is pressed, it is detected that the instruction is for displaying detailed information.

  When an instruction to display detailed information is detected (S104: Yes), the CPU 31 notifies the display unit 41 (an example of display means) to display detailed information on an error corresponding to the pressed key error. (S105).

  In the subsequent S106, the LED 70 inside the key pressed on the numeric key 42 is blinked to indicate that the detailed information of the corresponding error is displayed on the display unit 41. Note that the LED 70 may not be blinking but may be turned on by changing colors alternately red, yellow, and blue, or may be turned on in a color that is not used for error notification.

  For example, when all of the lighting colors used when an error occurs are red, yellow, and blue, the pressed key may be lit in green. That is, the key may be turned on so that it can be understood that the error is displaying detailed information on the display unit 41.

  If an instruction for displaying detailed information is not detected in S104 (S104: No), or after S106, the process proceeds to S110, and it is determined whether it is unnecessary to turn on the LED 70 indicating an error. The case where the lighting of the LED 70 is unnecessary is a case where cancellation of lighting indicating an error is instructed via the operation panel 40, for example.

  In addition, it is not necessary to turn on the LED 70 when it is instructed to use the numeric keypad 42 other than indicating an error. For example, there is a function that can be executed even when an error occurs, for example, when the numeric keypad 42 is used for inputting a telephone number for FAX transmission when a “Toner Low” error occurs.

  If lighting is necessary (S110: No), the light emission process is terminated. When the lighting is not necessary (S110: Yes), the process proceeds to S111, and the CPU 31 notifies the display unit 41 to display the error indicated by the lighting of the LED 70 (S111). Then, the LED 70 indicating an error is turned off in the numeric keypad 42 (S112), and the light emission process is terminated.

  In S <b> 112, the CPU 31 issues an instruction to the power supply unit 50, thereby cutting off the power supply to the LED 70 and turning off the LED 70. However, the power supply to the LED 70 does not have to be interrupted, and it is only necessary that the lighting indicating the error is extinguished. For example, if it is determined that it is not necessary to turn on the LED 70 by instructing the use of the numeric keypad 42 in addition to indicating an error or the like, it is easy to allow the user to perform an input operation, etc. You may do it.

  Here, determination of whether or not the LED 70 needs to be turned on in S102 will be described. The case where it is determined for the first time that an error has occurred in S101 has already been described. A case where it is not determined for the first time that the error has occurred, that is, a case where the light emission process is executed again in a state where the error has not yet been canceled and it is determined in S101 that an error has occurred will be described.

  At this time, in S102, it is determined that it is not necessary to turn on the LED 70 in S110 described above, and after turning off the LED 70 indicating an error in S112, for example, the LED 70 indicating an error through the operation of the operation panel 40. It may be determined that it is not necessary to turn on the LED 70 when it is not instructed to turn on the LED 70 and that the LED 70 needs to be turned on when the instruction is given.

  Alternatively, it may be determined that lighting is unnecessary when a certain period of time has not elapsed since it was instructed that lighting of the LED 70 is unnecessary, and that lighting is necessary when a certain period of time has elapsed.

  Further, in the light emission process, while the LED 70 indicating an error is turned off, the LED 70 is turned on to indicate an error when it is determined that display on the display unit 41 is unnecessary in the display process of FIG. 5 described later. If it is notified, it may be determined that lighting is necessary, and if it is not notified, it may be determined that lighting is not necessary.

  When it is determined in S110 that it is not necessary to turn on the LED 70, an error is displayed on the display unit 41 by performing a notification in S111. However, when it is determined in S102 that lighting is necessary when the light emission process is executed again, the display on the display unit 41 may be continued, or the display unit 41 is notified to be stopped. May be. That is, it is only necessary that the error notification is performed on at least one of the LED 70 of the numeric keypad 42 and the display unit 41.

  Next, display processing will be described with reference to the flowchart of FIG.

  In S201, the CPU 31 determines whether an error has occurred. This step is the same as S101. If it is determined that no error has occurred (S201: No), the display process is terminated.

  On the other hand, if it is determined that an error has occurred (S201: Yes), the process proceeds to S202, and the CPU 31 determines whether or not to display detailed information on at least one of the error name and the cancellation method on the display unit 41. Will be determined.

  In S202, when it is determined for the first time that an error has occurred in S201, that is, when an error has occurred, the display unit 41 is determined based on the type of error that has occurred or the power supply status to the display unit 41. Decide whether to display. For the error, it is not determined for the first time that an error has occurred, that is, the display process is executed again without being canceled after the error has occurred, and when it is determined in S201 that an error has occurred, This will be described in detail later.

  In addition, in this embodiment, the supply or interruption | blocking of the electric power with respect to the display part 41 is not restricted to the state which supplied or interrupted | blocked all the electric power with respect to the display part 41. FIG. That is, it refers to a state in which at least part of the power for displaying on the display unit 41 is supplied or cut off. For example, power is supplied to or cut off from a backlight (not shown) inside the display unit 41 for displaying.

  First, a method for determining whether to display on the display unit 41 based on the type of error in S202 will be described. When an error occurs, the CPU 31 refers to the error table of FIG. 6 and determines whether or not to display on the display unit 41.

  Here, the error type corresponds to an item of contents in the error table of FIG. It is assumed that whether or not to display on the display unit 41 is preset according to the type of error and stored in the ROM 33 or the NVRAM 34. However, the type of error in S202 is not limited to the content of the error.

  For example, referring to the error table in FIG. 6, the urgency level is set for each error. Here, the urgency level of the error that is preferably notified to the user is set to “high”. Therefore, based on this urgency level, when the error has a high urgency level, it may be determined to be displayed on the display unit 41.

  For example, when the error that has occurred is “Toner Empty”, referring to “Toner Empty” in the error table of FIG. 6, the urgency is defined as “high”. For this reason, it is determined to be displayed on the display unit 41. When the error that has occurred is “Paper Low”, referring to the error table in FIG. 6, the urgency is “low”, so that it is determined not to be displayed on the display unit 41.

  Further, for example, when the user needs work for canceling the error, it may be displayed on the display unit 41 and may not be displayed when the work is not required. Further, it may be determined that frequently occurring errors are not displayed on the display unit 41, and errors that do not occur frequently are displayed. Accordingly, it is possible to notify an error that is easier for the user to understand.

  Note that the type of error displayed on the display unit 41 may be set by the user. For example, the user can set to display “Toner Empty” on the display unit 41 and not to display “Jam Inside” through the operation of the operation panel 40. Further, for example, when it is determined that an error with a high urgency level is displayed on the display unit 41, the urgent level can be set by the user via the operation of the operation panel 40 and displayed on the display unit 41. You can set the error type.

  As a result, the user can know the detailed information only by displaying the necessary types of errors on the display unit 41 without giving an instruction to display the detailed information every time an error occurs. Will improve.

  Next, a method of determining based on the power supply state to the display unit 41 will be described. The CPU 31 determines not to display on the display unit 41 when the supply of power to the display unit 41 is interrupted due to, for example, S221 described later, and displays the display unit 41 when power is supplied. It is determined to be displayed. Thereby, the frequency which supplies electric power to the display part 41 in S203 mentioned later reduces, and the effect of a power saving can be improved more.

  Here, the method of determining whether or not to display on the display unit 41 in S202 based on the type of error that has occurred or the state of power supply to the display unit 41 has been described. However, it may be determined based on both the type of error and the power supply state.

  In this case, it is determined to display on the display unit 41 when both the error type and the power supply state as displayed on the display unit 41 are satisfied (S202: Yes). When only one of them is satisfied, it is determined not to display on the display unit 41 (S202: No). For example, even when “Toner Empty”, which is the type of error determined to be displayed on the display unit 41, occurs, if the power to the display unit 41 is not supplied, the display unit 41 must display it. If it is determined and power is supplied, it is determined to be displayed on the display unit 41.

  In S202, when it is determined to display on the display unit 41 (S202: Yes), the process proceeds to S203, and the CPU 31 issues an instruction to the power supply unit 50 to supply power to the display unit 41 (S203). If the power to the display unit 41 has already been supplied, this step is not performed and the process proceeds to S204.

  In subsequent S204, detailed information that is at least one of the name of the error and the cancellation method is displayed on the display unit 41. For example, when “Toner Empty” occurs, “Toner Empty” is referred to in the error table of FIG. Then, since the display content is “Please replace the Replace Toner toner cartridge”, as shown in FIG. 2, “Please replace the Replace Toner toner cartridge” is displayed on the display unit 41.

  Here, the name of the error is “Toner Empty” corresponding to the content in the error table of FIG. 6, and the error canceling method is “Replace Replace Toner toner cartridge”. When the detailed information is displayed, at least one of the error name and the canceling method may be displayed on the display unit 41.

  That is, either the error name or the cancellation method may be displayed, or both may be displayed. This is set in advance and is stored in the display content item in the error table of FIG. In addition, the example which displayed the cancellation method of an error was demonstrated here.

  On the other hand, if it is determined not to display on the display unit 41 in S202 (S202: No), the process proceeds to S210. In S210, the CPU 31 detects whether or not the display of the detailed information on at least one of the error name and the canceling method on the display unit 41 is instructed in S103 of the light emission process described above. This is based on S104 and S105 described above. When the detailed information display instruction is not detected (S210: No), the display process is terminated.

  When the detailed information display instruction is detected (S210: Yes), the process proceeds to S211 and the CPU 31 issues an instruction to the power supply unit 50 to supply power to the display unit 41. Note that this step is not performed when the power to the display unit 41 has already been supplied. This is the same as S203.

  Next, the process proceeds to S212. In S <b> 212, based on the notification made in S <b> 105, the CPU 31 displays detailed information corresponding to the pressed key error, which is at least one of the error name and the canceling method, on the display unit 41. In addition, when there are a plurality of errors indicated by the LEDs 70 of the corresponding numeric keypad 42, it is preferable to refer to the error table of FIG.

  For example, when both the “Jam Inside” and “Jam Ray” errors that light the LED 70d inside the “4” key on the numeric keypad 42 have occurred, and “4” on the numeric keypad 42 is pressed, Referring to the error table of FIG. 6, “Jam Inside” has a higher priority than “Jam Tray”. Therefore, as the detailed information of “Jam Inside” having high priority, “Please clear the jam inside cover jam” stored in the display content item in the error table is displayed on the display unit 41.

  In this example, both the error name “Jam Inside” and the release method “Clear paper jam in the cover” are displayed. However, either one should be displayed. Also good. This is set and stored in advance. This is the same as S204.

  Further, in the above-described light emission processing, the detailed information is displayed on the display unit 41 by blinking the “4” key which is an error key displaying the detailed information on the display unit 41 in S106. It is informing that it is an error. However, S106 may not be performed.

  In this case, in S212, the detailed information is displayed on the display unit 41 and the detailed information corresponding to the error “4” is displayed. For example, as shown in FIG. 2, “No. 4 error” or the like is displayed on a part of the display unit 41. In other words, it is only necessary to make the display unit 41 know which error information corresponding to the key error of the numeric keypad 42 is displayed by either the LED 70 of the numeric keypad 42 or the display unit 41.

  Then, after S204 and after S212, the process proceeds to S220. In S220, the CPU 31 determines whether or not the display of the detailed information on the display unit 41 is unnecessary. The case where the display is not necessary is, for example, when an instruction to display a function other than detailed error information, for example, a function for printing using the display unit 41, is given through the operation of the operation panel 40, This is the case, for example, when non-display of detailed information is instructed by pressing the numeric keypad corresponding to the error of the displayed detailed information again.

  Also, it is determined that the display is unnecessary even when a certain period of time has elapsed since the detailed information of the error has been displayed, or when the user is instructed via the operation panel 40 to shift to the power saving mode.

  If display is necessary (S220: No), the display process is terminated. When the display is not necessary (S220: Yes), the CPU 31 issues an instruction to the power supply unit 50 in the subsequent S221, thereby cutting off the power supply to the display unit 41 and terminating the display process.

  In addition, when the lighting of the error in the LED 70 is also turned off, the LED 70 is notified to perform the lighting indicating the error. As a result, it is determined in S102 described above that lighting indicating an error of the LED 70 is necessary, and at least one of the display unit 41 and the LED 70 of the numeric keypad 42 is notified of the error.

  If it is determined in S220 that display of detailed information is not necessary due to an instruction to hide detailed information on error in order to display information other than detailed information on error, etc., display is performed in S221. Instead of shutting off the power supply to the unit 41, it is preferable to perform a process of hiding the detailed information. As a result, the display unit 41 can be used for displaying information other than error details, and convenience is improved.

  Here, the determination of whether or not to display on the display unit 41 in S202 will be described. The case where it is first determined that an error has occurred in S201 has already been described. The case where it is not determined that the error has occurred for the first time, that is, the case where it is determined that an error has occurred in S201 is executed again after the error has occurred and the display process is executed again. To do.

  In S201, it has been described that whether or not to display on the display unit 41 is determined according to the type of error or the power supply state to the display unit 41. However, if it is not the first time that it is determined that an error has occurred in S201, the display unit 41 also displays the detailed information to be displayed on the display unit 41 in S111 in the light emission processing described above. Then decide.

  That is, it is determined that the lighting of the LED 70 is unnecessary in S110 of FIG. 4 (S110: Yes), and when it is notified in S111 that the error indicated by the LED 70 is displayed on the display unit 41, the process proceeds to S202. Then, it is determined to be displayed on the display unit 41 (S202: Yes). Thereby, an effect that an error is notified is obtained at least one of the LED 70 of the numeric keypad 42 and the display unit 41.

  In S220, the error detailed information is displayed when a display other than the error detailed information, for example, an instruction to display a function for printing using the display unit 41 is given through the operation of the operation panel 40. When the non-display is instructed, it may be determined that display on the display unit 41 is necessary when the display or operation of the function for printing is canceled. As a result, it is possible to display as much as possible the error set to be displayed on the display unit 41 and the error displayed on the display unit 41 when the numeric keypad 42 is pressed.

  As described above, according to the above-described embodiment, the user can set the lighting method of the LED 70 when an error occurs. Therefore, when an error occurs, the user looks at the lighting state of the LED 70 to determine which It is easy to predict whether such an error has occurred. In addition, since power supply to the display unit 41 can be cut off, power saving is realized.

  Furthermore, a user who does not know what kind of error has occurred by looking at the lighting state of the LED 70 displays the detailed information of the corresponding error on the display unit 41 for confirmation by depressing the numeric keypad 42 and instructing it. This improves convenience.

  In particular, a user who knows what kind of error has occurred by looking at the lighting state indicating the error of the LED 70 can cancel the error without causing the display unit 41 to display detailed information. In this case, since power is less supplied to the display unit 41, a great effect can be obtained in terms of power saving.

  In the above embodiment, the LED 70 provided inside each key of the numeric keypad 42 is used as the light emitting means for indicating an error. However, the light emitting means is not limited to the LED 70. For example, another display panel may be provided in addition to the display unit 41, and the display panel and the button group of the operation panel 40 may be realized.

  For example, when a plurality of error titles are displayed on the display panel and each error is selected by a button group, detailed information on the error corresponding to the selected error may be displayed on the display unit 41. In addition, an error may be indicated by sequentially lighting with a lighting color corresponding to a plurality of errors using one LED.

  In the above embodiment, when both “Jam Inside” and “Jam Tray” occur, it is set that the LED 70d inside the “4” key of the numeric keypad 42 is turned on with reference to the error table. Yes. Thus, when the “4” key is lit, the user can easily understand that an error relating to Jam has occurred.

  However, even when a plurality of errors relating to Jam, for example, are occurring, all different LEDs 70 may be turned on. This makes it easier for the user to see at a glance that multiple errors have occurred.

  In the above embodiment, the error table is described as being stored in the ROM 33 or the NVRAM 34. However, any other storage unit may be used as long as it is a non-volatile storage unit that can store data even when power supply is cut off.

  Further, in the above embodiment, when an error occurs, the LED 70 is turned on to indicate the error, and the detailed information display instruction is displayed on the display unit 41 when an instruction to display the detailed information is detected by pressing the numeric key 42 or the like. It is carried out. However, since it is only necessary to notify the user that an error has occurred, it is only necessary that the error is reported on at least one of the LED 70 of the numeric keypad 42 and the display unit 41.

  For this reason, the above embodiment can be changed to a form in which an error is reported on either the LED 70 of the numeric keypad 42 or the display unit 41. At this time, the CPU 31 determines whether the error that has occurred is notified by the LED 70 or the display unit 41 and switches the error.

  That is, when the LED 70 indicating an error is turned on in the light emission process of FIG. 4, in the display process of FIG. 5, it is determined that the display on the display unit 41 is unnecessary in S202 and S220, and the display is not performed. Like that. On the other hand, when the display unit 41 is displayed in the display process of FIG. 5, it is determined in S102 and S110 that lighting indicating an error in the LED 70 is unnecessary in the light emission process of FIG. Like that.

  In this case, when the detailed information on the error is displayed on the display unit 41, the power supply to the LED 70 is cut off.

  For example, when the detailed information is displayed on the display unit 41 by pressing the numeric key 42, the CPU 31 issues an instruction to the power supply unit 50 and shuts off the power supply to the LED 70, thereby indicating an error of the LED 70. Turn off the light.

  In addition, when an error that is determined to be required to be displayed on the display unit 41 in S202 occurs, detailed information about the error is displayed on the display unit 41. The lighting to indicate is not performed.

  Here, as described above, in the display unit, when it is determined in S220 that the display on the display unit 41 is unnecessary, the power supply to the LED 70 is cut off (S221).

  That is, when the detailed information on the error is displayed on the display unit 41, power supply to the LED 70 is not performed. On the other hand, when the LED 70 is turned on to indicate an error, power is not supplied to the display unit 41. Thereby, the effect of further power saving can be expected.

  In the above-described embodiment, when the user can set the lighting mode indicating an error with the numeric keypad, perform lighting indicating the error with the numeric keypad according to the user setting, and instruct the detailed information display It is possible to change to a form in which displaying the detailed information of the error corresponding to the generated error on the display unit 41 is an essential configuration.

  In this case, even when the detailed display instruction is not given to the display unit 41 in the power saving mode, it is not essential to cut off the supply of power to the display unit 41, and the power may be supplied or cut off. You may keep it.

  When the power supply is not shut off, S203 in FIG. 5 is not performed. When it is determined in S202 that display on the display unit 41 is necessary (S202: Yes), the process proceeds to S204. If an instruction to display detailed information is detected in S210 (S210: Yes), the process proceeds to S212. In S221, the power supply is not shut off, the detailed information is hidden, and the display process is terminated.

  As described above, even when the power supply to the display unit 41 is not interrupted, the user can predict what kind of error has occurred by looking at the lighting of the LED 70. Further, a user who cannot predict what kind of error has occurred from the lighting of the LED 70 displays the detailed information on the error corresponding to the error of the pressed key on the display unit 41 by pressing the numeric key 42 and instructing it. The effect that it can confirm is also acquired.

  Furthermore, since power is supplied to the display unit 41, it can be used to display detailed information of the highest priority error or can be used for display for operation of the MFP 100. Will improve.

  Moreover, this embodiment is only an illustration and does not limit this invention at all. Therefore, the present invention can be variously improved and modified without departing from the scope of the invention.

  For example, the present invention is not limited to the MFP, and can be applied to any apparatus having an image reading function such as a copying machine.

  In the above embodiment, one CPU 31 executes all the light emission processing and display processing. However, the present invention is not limited to this, and may be executed by a plurality of CPUs, a dedicated circuit ASIC (Application Specific Integrated Circuit), or the like. . For example, separate CPUs may execute detection of detailed information display instructions, power supply or cutoff, display on a display unit, lighting of a numeric keypad, and the like.

DESCRIPTION OF SYMBOLS 10 Image formation part 20 Image reading part 31 CPU
34 NVRAM
40 Operation Panel 41 Display 42 Numeric Keypad 50 Power Supply Unit 70 LED
100 MFP

Claims (7)

A light emitting means for performing both light emission indicating one error and light emission indicating another error when one error and another error occur together;
Detecting means for detecting whether display of detailed information which is at least one of an error name and a cancellation method for the one or other errors is instructed;
Display means for displaying detailed information for the indicated one or other errors;
Control means;
With
Wherein,
When detecting the instruction of the display about the details by the previous SL detecting means performs power supply to said display means, and display starts about detailed information by said display means,
When the detailed information for one or other errors is displayed on the display means, the light emission indicating the error by the light emitting means is switched to the light emission indicating that the detailed information is displayed on the display means. Characteristic printing device. The printing apparatus according to claim 1,
A printing apparatus comprising: setting means for setting a light emission mode indicating the one error and a light emission mode indicating the other error. The printing apparatus according to claim 1 or 2,
The light emitting means includes a plurality of light emitting units,
The printing apparatus according to claim 1, wherein the control unit emits light by the different light emitting units corresponding to the one and other errors. The printing apparatus according to any one of claims 1 to 3,
The printing device, wherein the display means displays whether the displayed detailed information is detailed information for one or another error. The printing apparatus according to any one of claims 1 to 4 ,
The control means supplies power to the display means when an error occurs, and determines whether to display detailed information by the display means according to the type of error. apparatus. The printing apparatus according to any one of claims 1 to 4 ,
The control means starts display related to detailed information by the display means when power is supplied to the display means when an error occurs, and details are displayed by the display means when power to the display means is not supplied. A printing apparatus characterized by not displaying information related information. The printing apparatus according to any one of claims 1 to 6 ,
The printing apparatus is characterized in that, when the display unit displays information related to detailed information on an error, the control unit cuts off the power supply to the light emitting unit.