JP2016069151A - Sheet material transporting device and image generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize confirmation of positions of sheet material transportation error or transportation error cancelling operation corresponding to sheet material detecting means even if power supplementation to the sheet material detecting means is terminated when doors are opened.SOLUTION: The devices comprise: sheet material detecting means 100 and the like which is supplied with power from power supply means to detect sheet material; visual notification means 200 to 217 which are arranged at a position in a device main body where it is visually recognizable when doors 400 to 403 are opened, and visually notify positions of sheet material transportation error and transportation error cancelling operation; and controlling means 700 which controls the visual notification means based on detection result by the sheet material detecting means, and terminates power supplementation from the power supply means to the sheet material detecting means when the doors are opened based on the detection result by an open/close detecting means. The controlling means executes open condition notification control where notification condition of the visual notification means after the doors are opened is made into the same condition as the notification condition just before the doors are opened.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sheet material conveying apparatus and an image forming apparatus.

  2. Description of the Related Art Conventionally, there has been known a sheet material conveyance device that notifies a notification means when a sheet material conveyance failure such as a jam occurring on a sheet material conveyance path is detected from a detection result of a sheet material detection unit.

  In Patent Document 1, a light emitting member (visual notification means) is provided in the vicinity of the operation location so that the user can easily confirm the operation location (conveyance failure elimination operation location) to be operated during jam processing (conveyance failure elimination operation). An image forming apparatus provided with is disclosed. In this image forming apparatus, when it is determined from the detection result of the remaining medium detection means (sheet material detection means) that a jam that should operate the operation location has occurred, the light emitting member is caused to emit light, thereby performing jam processing. Inform the user of the operation location to be operated.

  Since the sheet material conveying device is often covered with the outer cover of the sheet material conveying device, the opening / closing door provided on the outer cover is opened when jamming. After the sheet is released, an operation of removing the sheet material to be jammed from the sheet material conveyance path is performed. At this time, in general, power supply to members handled in this work or members that the user may touch during the work is stopped. Specifically, an opening / closing detection means for detecting the opening / closing operation of the opening / closing door is provided, and power supply control is performed such that power supply is stopped when the opening / closing door is opened, and power supply is resumed when the opening / closing door is closed. .

  However, when power supply is controlled in conjunction with the opening / closing operation of the door as described above, the light emitting member in the vicinity of the conveyance failure elimination operation location is caused to emit light at the time of jam processing as in the image forming apparatus disclosed in Patent Document 1. The following problems occur:

  Such light emission control of the light emitting member is generally performed according to a sheet detection signal from the sheet material detection unit corresponding to the conveyance defect elimination operation location. Specifically, the period during which the sheet detection signal from the sheet material detection unit is ON (the period during which the sheet material is detected) causes the light emitting member to emit light, and the period during which the sheet detection signal from the sheet material detection unit is OFF. Control is performed such that the light emitting member does not emit light during a period in which no sheet material is detected. At this time, if the sheet material detection unit is a target for which power supply is stopped by power supply control, power supply to the sheet material detection unit is stopped when the door is opened during the jam processing. Then, the sheet detection signal becomes indefinite, and normally the light emitting member does not emit light. In other words, if a sheet material jam occurs in the sheet material conveyance path corresponding to the sheet material detection means that is subject to power supply control linked to the opening / closing operation of the opening / closing door, the opening / closing door is used for the jam processing. The light emission of the light emitting member at the conveyance failure elimination operation location corresponding to the sheet material detection means stops when the sheet is opened. As a result, even if the user opens the opening / closing door for the jam processing and tries to check the conveyance failure elimination operation location by the light emission of the light emitting member, the user cannot confirm the operation failure and is forced to search for the conveyance failure elimination operation location. The problem occurs.

  This problem is not limited to the case where the light emitting member in the vicinity of the conveyance failure elimination operation portion is caused to emit light, and the sheet material conveyance failure is caused by the visual notification means disposed at a position where the opening / closing door becomes visible. If the location and the conveyance failure elimination operation location are informed visually, there is a problem that may occur in the same manner.

  In order to solve the above-described problems, the present invention provides a sheet material conveying apparatus that conveys a sheet material along a sheet material conveying path, an open / close door, an open / close detecting unit that detects an open / closed state of the open / close door, and the open / close A moving unit that can be moved with respect to the apparatus main body when the door is opened, a power supply means provided in the apparatus main body, and provided on the moving unit and receiving power from the power supply means Sheet material detecting means for detecting a sheet material and a position on the apparatus main body that is visible when the open / close door is opened, visually informing a sheet material conveyance failure point, or the sheet Based on the detection result of the sheet material detection means, the visual notification means for visually informing the conveyance defect elimination operation location operated by the user in order to eliminate the conveyance failure of the material conveyance failure location. The opening / closing door is in an open state based on a notification control means for notifying the visual notification means of a sheet material conveyance failure location or a conveyance failure elimination operation location corresponding to the sheet material detection device, and a detection result of the opening / closing detection device. Power supply control means for stopping power supply from the power supply means to the sheet material detection means, and the notification control means indicates a notification state of the visual notification means after the open / close door is opened. The open state notification control is performed so as to be the same as the notification state immediately before the open / close door is opened.

  According to the present invention, when the opening / closing door is opened to eliminate the conveyance failure, even if the power supply to the sheet material detection unit is stopped, the sheet material conveyance failure location or conveyance failure corresponding to the sheet material detection unit There is an excellent effect that the canceling operation location can be confirmed.

1 is an explanatory diagram illustrating a schematic configuration of an image forming apparatus according to an embodiment. (A)-(c) is explanatory drawing which shows the content of dummy sensor control. It is a flowchart which shows an example of the jam processing control in embodiment.

Hereinafter, an embodiment in which a sheet conveying apparatus as a sheet material conveying apparatus according to the present invention is applied to an image forming apparatus will be described.
FIG. 1 is an explanatory diagram showing a schematic configuration of an image forming apparatus according to the present embodiment.
The image forming apparatus according to the present embodiment can be roughly divided into a first section 1 on the right side in the drawing and a second section 2 on the left side in the drawing. In the first section 1, image forming units 6Y, 6M, 6C, and 6K for yellow (Y), magenta (M), cyan (C), and black (K) are provided on the intermediate transfer belt 7 as an intermediate transfer member. It is arranged side by side along the surface movement direction. Each of the image forming units 6Y, 6M, 6C, and 6K includes a photosensitive member as a latent image carrier, and a charging device as a charging unit, an exposure device as a latent image forming unit, and a development around the photosensitive member. It has a general electrophotographic configuration provided with a developing device as a means, a primary transfer device as a primary transfer means, a cleaning device as a cleaning means, and the like.

  During the image forming operation, each image forming unit 6Y, 6M, 6C, 6K forms a toner image of each color on each photoconductor based on the image signal of each color. The color toner images are primarily transferred so as to overlap each other on the intermediate transfer belt 7, and are conveyed to the secondary transfer device 8 as the surface of the intermediate transfer belt 7 moves.

  On the other hand, a sheet which is a recording material as a sheet material is accommodated in the sheet feeding devices 500 and 501. Sheets are fed one by one from these sheet feeding devices 500 and 501, and are conveyed from the sheet conveying path 602 to the registration unit 3 through the sheet conveying paths 600 and 601. The sheet conveyed to the registration unit 3 is skewed by abutting against the registration roller pair 9 in the registration unit 3, and the conveyance is temporarily stopped. Thereafter, the registration roller pair 9 is driven so that the paper also reaches the secondary transfer device 8 when the toner image on the intermediate transfer belt 7 reaches the secondary transfer device 8.

  The secondary transfer device 8 secondarily transfers the toner image on the intermediate transfer belt 7 onto a sheet. The sheet on which the toner image is transferred is conveyed by the paper conveying unit 603 and is sent from the first section 1 to the second section 2.

  The sheet sent to the second section 2 is sent to a fixing unit 4 as fixing means provided in the second section 2. In the fixing unit 4, the toner on the paper is fixed to the paper by the action of heat and pressure. Thereafter, the sheet is cooled while passing through the paper conveyance path 604, and is discharged from the second section 2 via the paper conveyance path 605 in the case of single-sided printing. In the case of double-sided printing, the paper is sent again to the resist unit 3 through the paper conveyance path 606, and the toner image is secondarily transferred to the back side by the secondary transfer device 8. Thereafter, after passing through the fixing unit 4, the paper is discharged from the conveyance path 605.

  The sections 1 and 2 of the image forming apparatus according to the present embodiment are provided with doors 400, 401, 402, and 403, respectively. By opening these doors, the user can access the inside of each section 1 and 2. The registration unit 3 of the present embodiment is a moving unit that can be pulled out toward the front side in the drawing with respect to the image forming apparatus main body. The registration unit 3 can be pulled out of the image forming apparatus main body (first section 1) by opening the open / close doors 400 and 401 to the outside of the apparatus. Thus, by pulling out the registration unit 3 from the image forming apparatus main body, a jam processing operation for removing paper jammed in the registration unit 3 is facilitated.

  Further, the fixing unit 4 of the present embodiment is also a moving unit that can be pulled out toward the front side in the drawing with respect to the image forming apparatus main body. The fixing unit 4 can be pulled out of the image forming apparatus main body (second section 2) by opening the open / close doors 402 and 403 to the outside of the apparatus. Accordingly, by pulling out the fixing unit 4 from the main body of the image forming apparatus, a jam processing operation for removing paper jammed in the fixing unit 4 is facilitated.

  The guide plates 300 to 312 of the present embodiment are also moving units that can move in the direction of the arrow in the drawing with respect to the image forming apparatus main body. These guide plates 300-312 can also be moved by opening the doors 400-403. By moving the guide plates 300 to 312, a jam handling operation for removing jammed paper or the like is facilitated.

  In the present embodiment, a number of jam detection sensors 100 to 133 are provided in order to detect a jam of the paper conveyed along the paper conveyance paths 600 to 606 in the image forming apparatus. These jam detection sensors 100 to 133 output an ON signal to the control unit 700 while a sheet is present at each detection location, and output an OFF signal to the control unit 700 while no sheet exists at each detection location. To do. As such jam detection sensors 100 to 133, for example, a transmissive optical sensor in which a light emitting element and a light receiving element are arranged across a paper conveyance path can be used.

  The controller 700 can determine whether or not a jam has occurred based on the detection results of the jam detection sensors 100 to 133. Specifically, when an ON signal or an OFF signal from each jam detection sensor 100 to 133 is received or cannot be received during a predetermined period, a detection location corresponding to the jam detection sensor 100 to 133 or It is determined that a jam has occurred in the vicinity (sheet material conveyance failure portion).

  When it is determined that a jam has occurred, the control unit 700 performs predetermined jam processing control such as stopping the image forming operation, and controls the operation panel 5 (another notification unit) to notify the jam. In this jam notification, for example, a jam location (sheet material conveyance failure location) corresponding to the corresponding jam detection sensor 100 to 133 or an open / close door 400 to 403 to be operated by the user at the time of a jam processing operation for removing paper at the jam location. Etc. (conveyance defect elimination operation location) is notified to the user.

  Further, in the present embodiment, the jammed part and the moving units 3, 4, 300 to be moved to a position on the apparatus main body (inside the apparatus main body) that becomes visible when the open / close doors 400 to 403 are opened. LED lamps 200 to 217 are provided as visual notification means for visually informing about 312 to 312 (conveyance failure elimination operation location). As shown in Table 1 below, these LED lamps 200 to 217 are provided corresponding to the jam detection sensors 100 to 133, respectively, and when jams are detected by the corresponding jam detection sensors 100 to 133, respectively. The corresponding LED lamps 200 to 217 are turned on.

  Specifically, when the control unit 700 determines that a jam has occurred based on the detection results of the jam detection sensors 100 to 133, the control unit 700 controls the LED lamps 200 to 217 corresponding to the jam detection sensors 100 to 133 to light. I do. As a result, the user who opened the open / close doors 400 to 403 and visually recognized the inside of the apparatus confirmed the LED lamps 200 to 217 that were lit, so that the jam handling operation was performed on which moving unit 3, 4, 300 to 312. It is possible to immediately grasp whether or not to perform.

  In the registration unit 3, three jam detection sensors 100, 132, 133 as sheet material detection means for detecting the presence or absence of paper are arranged along the paper conveyance path (sheet material conveyance path) in the registration unit 3. . These jam detection sensors 100, 132, and 133 can perform a sheet detection operation by receiving power supply from a power supply unit (not shown) as power supply means provided in the image forming apparatus main body.

  The fixing unit 4 is also provided with jam detection sensors 105, 106, and 107 as sheet material detection means for detecting the presence or absence of paper. The jam detection sensor 105 is disposed at a position where the paper wound around the fixing belt of the fixing unit 4 can be detected. The jam detection sensor 106 is disposed at a position where it can detect a sheet that has appropriately passed through the fixing nip between the fixing belt and the pressure roller of the fixing unit 4 along the sheet conveyance path. The jam detection sensor 107 is disposed at a position where the paper wound around the pressure roller of the fixing unit 4 can be detected. These jam detection sensors 105, 106, and 107 can also perform a sheet detection operation by receiving power supply from a power supply unit (not shown) as power supply means provided in the image forming apparatus main body.

  Some of the guide plates 300 to 312 are provided with a jam detection sensor as a sheet material detection unit that detects the presence or absence of a sheet. These jam detection sensors can also perform a paper detection operation by receiving power supply from a power supply unit (not shown) as power supply means provided in the image forming apparatus main body.

  In the present embodiment, the two adjacent jam detection sensors 132 and 133 provided on the registration unit 3 are set such that the distance on the paper transport path is wider than the length in the paper transport direction. With such a configuration, the number of jam detection sensors can be reduced, and cost reduction can be achieved. However, if the paper just jams between the detection points of these jam detection sensors 132 and 133, it is not possible to properly grasp the jam location of the paper from the output signals of these jam detection sensors 132 and 133.

  Therefore, in the present embodiment, by performing dummy sensor control as described below, even if the paper is jammed between the detection points of the jam detection sensors 132 and 133, the jam point is appropriately set. We are trying to grasp it.

2A to 2C are explanatory diagrams showing the contents of dummy sensor control.
In the present embodiment, when the jam detection sensor 132 on the upstream side in the paper conveyance direction outputs an ON signal, the control unit 700 stores a stored value (hereinafter referred to as “dummy sensor value 134”) of a predetermined storage unit (virtual detection result storage unit). .) Is the sensor value ON indicating the paper detection state. In addition, when the jam detection sensor 133 on the downstream side in the paper conveyance direction outputs an ON signal, the control unit 700 sets the dummy sensor value 134 of the predetermined storage unit (virtual detection result storage unit) as a sensor value indicating a paper non-detection state. Turn off. By performing such dummy sensor control, the control unit 700 can detect that the dummy sensor value 134 is ON even when the paper P is jammed at the position shown in FIG. You can know that the paper has jammed.

  Here, when the registration unit 3 is pulled out from the apparatus main body, the power-supplied connector on the registration unit 3 is separated from the power supply connector on the apparatus main body side, and power supply to the jam detection sensors 100, 132, 133 on the registration unit 3 is stopped. To do. Similarly, when the fixing unit 4 is pulled out from the apparatus main body, the power-supplied connector on the fixing unit 4 is separated from the power supply connector on the apparatus main body side, and power is supplied to the jam detection sensors 105, 106, and 107 on the fixing unit 4. Stop. Further, when the guide plates 300 to 312 provided with the jam detection sensor are moved in the direction of the arrow in the figure, the power-supplied connector on the guide plate is separated from the power supply connector on the apparatus body side, and the jam on the guide plate is detected. Power supply to the detection sensor stops.

  In such a configuration, when moving the moving units 3, 4, 300 to 312, if the power-supplied connector on the moving unit is brought into contact with or separated from the power supply connector for which power supply is continued, the spark is generated. May occur, and the connector may be damaged. In addition, when the mobile units 3, 4, 300 to 312 are moved and the power-supplied connector on the mobile unit is brought into contact with the power supply connector that is continuously supplied with power, an inrush current is generated and various electronic circuits are damaged. There can be a problem.

  Therefore, in the present embodiment, the control unit 700 functions as a power feeding control unit, and feeds power to the moving units 3, 4, 300 to 312 from the power source unit of the apparatus main body when the open / close doors 400 to 403 are open. Control to stop. Specifically, each of the open / close doors 400 to 403 is provided with an open / close sensor as an open / close detection means for detecting the open / close state, and an output signal from the open / close sensor is output to the control unit 700. Has been. The control part 700 can grasp | ascertain the open / closed state of each open / close door 400-403 based on the output signal from an open / close sensor. Then, based on the output signal from the open / close sensor, the control unit 700 stops power supply while determining that the open / close doors 400 to 403 are open, and determines that the open / close doors 400 to 403 are closed. Control is performed so that power is supplied during the operation.

  By such control, power feeding can be stopped in conjunction with the opening operation of the opening and closing doors 400 to 403 performed at the stage before moving the moving units 3, 4, 300 to 312 in the apparatus. As a result, no spark or inrush current occurs when the power-supplied connector on the mobile unit and the power-supply connector on the apparatus main body side come into contact with or separate from each other due to movement of the mobile units 3, 4, 300 to 312.

  However, when the power supply to the jam detection sensors on the moving units 3, 4, 300-312 is controlled in conjunction with the opening / closing operation of the opening / closing doors 400-403, when the opening / closing doors 400-403 are opened, The output signal from the jam detection sensor on the moving units 3, 4, 300-312 becomes indefinite. In this case, the control unit 700 is in a state where the detection result of the jam detection sensor cannot be confirmed. For example, the LED lamps 200 to 217 corresponding to the jam detection sensor are not turned on but are turned off. In this case, when the user opens the open / close doors 400 to 403 and visually recognizes the inside of the apparatus, the user cannot confirm that the LED lamps 200 to 217 are turned on. You will not be able to figure out what to do.

  Therefore, in the present embodiment, even when power supply to the jam detection sensors on the moving units 3, 4, 300-312 is controlled in conjunction with the opening / closing operation of the opening / closing doors 400-403, the LED lamps 200-217 are appropriately set. The open state notification control that can be turned on is executed.

FIG. 3 is a flowchart showing an example of jam processing control in the present embodiment.
When the control unit 700 determines that a jam has occurred based on the output signals from the jam detection sensors 100 to 133 (Yes in S1), the control unit 700 performs predetermined jam processing control such as stopping the image forming operation. And the control part 700 memorize | stores the sensor value (value for identifying whether it is an ON signal or an OFF signal) of the output signal from the sensor on the movement units 3, 4, 300-312 in a memory | storage means (S2). Note that the sensor values of the sensors on the moving units 3, 4, 300 to 312 here include the dummy sensor value 134 described above.

  Thereafter, the control unit 700 controls the operation panel 5 based on the sensor value stored in the storage unit and the sensor value of the output signal of the jam detection sensor other than the jam detection sensors on the moving units 3, 4, 300 to 312. And jam notification is performed (S3). Further, the control unit 700 determines the LED lamp based on the sensor value stored in the storage means and the sensor value of the output signal of the jam detection sensor other than the jam detection sensor on the moving units 3, 4, 300 to 312. Lighting control is started (S4).

  Thereafter, when the user performs an operation of opening the doors 400 to 403 according to the notification content of the operation panel 5, the control unit 700 determines that the doors 400 to 403 are opened based on the output signals of the opening and closing sensors ( S5 Yes). And the control part 700 stops the electric power feeding to the jam detection sensor on the movement units 3, 4, 300-312 (S6). Thereby, even if the user who opened the open / close doors 400 to 403 moves the moving units 3, 4, and 300 to 312, no spark or inrush current occurs.

Here, a case will be described in which the jam detection sensor that outputs an output signal that is the basis for jam detection is not a sensor on the moving units 3, 4, 300 to 312.
Even when the opening / closing doors 400 to 403 are opened, power supply to jam detection sensors other than the jam detection sensors on the moving units 3, 4, and 300 to 312 (jam detection sensors provided in the apparatus main body) is continued. Therefore, if the jam detection sensor that has output an output signal that is the basis for jam detection is not a sensor on the moving units 3, 4, 300-312, it corresponds even if the open / close doors 400-403 are open. The LED lamp is lit according to the sensor value.

  Therefore, the user who visually recognizes the inside of the apparatus confirms the LED lamp that is lit to determine which mobile unit 3, 4, 300 to 312 should perform the jam processing work, or at which location the paper is Can quickly figure out if the jam is occurring. Then, when the user performs an operation to remove the paper, the sensor value of the jam detection sensor that has been turned on is turned off. As a result, the control unit 700 performs control to turn off the LED lamps that have been turned on.

  Thereafter, when the user performs the operation of removing the paper and closes the door, the control unit 700 determines that the doors 400 to 403 are closed based on the output signal of the opening / closing sensor (Yes in S7). As a result, the control unit 700 starts power feeding to the jam detection sensors on the moving units 3, 4, 300 to 312 (S <b> 8), and performs jam detection again based on the output signals from the jam detection sensors 100 to 133. Implement (S9). As a result, if a jam is not detected, the image forming operation is resumed.

Next, a case where the jam detection sensor that outputs an output signal that is a basis for jam detection is a sensor on the moving units 3, 4, 300 to 312 will be described.
When the open / close doors 400 to 403 are in the open state, the output signals of the jam detection sensors on the moving units 3, 4, and 300 to 312 are indefinite. However, in this embodiment, when the open / close doors 400 to 403 are in the open state, the control unit 700 stores them in the storage means, not the sensor values of the jam detection sensors on the moving units 3, 4, and 300 to 312. The lighting control of the LED lamp is performed using the sensor value. Therefore, also in this case, the corresponding LED lamp is lit according to the sensor value.

  Therefore, even when a jam detection sensor that outputs an output signal that is a basis for jam detection is a sensor on the moving units 3, 4, 300 to 312, the user who visually recognizes the inside of the apparatus checks the LED lamp that is lit. By doing so, it is possible to immediately grasp which moving unit 3, 4, 300 to 312 should be subjected to the jam processing operation, or at which location the paper is jammed.

  At this time, even if the user moves the moving units 3, 4, 300 to 312 to remove the paper, the sensor value in the storage means does not change. The control of lighting is continued. However, if the control unit 700 determines that the user has removed the paper and closed the door (Yes in S7), the control unit 700 supplies power to the jam detection sensors on the moving units 3, 4, 300 to 312. (S8), and the jam detection is performed again based on the output signals from all the jam detection sensors 100 to 133 including the jam detection sensors on the moving units 3, 4, 300 to 312 (S9). Thus, if a jam is not detected, the image forming operation is resumed.

What has been described above is merely an example, and the present invention has a specific effect for each of the following modes.
(Aspect A)
In a sheet material conveying apparatus that conveys a sheet material such as paper along a sheet material conveying path such as a paper conveying path 600 to 606, open / close detection such as open / close doors 400 to 403 and an open / close sensor that detects an open / closed state of the open / close door Means, power supply means such as a power supply unit provided in the apparatus main body, and sheet material detection means such as jam detection sensors 100, 132, 133, 105, 106, 107 that detect power supply from the power supply means And is placed at a position in the apparatus body that is visible when the open / close door is opened, visually informing a sheet material conveyance failure location such as a jam location, or of the sheet material conveyance failure location Visual notification means such as LED lamps 200 to 217 that visually notify a conveyance failure elimination operation location operated by a user to eliminate conveyance failure, and the sheet material detection means Based on the notification result, the control unit 700 and the like for controlling the visual notification unit, and on the basis of the detection result of the opening / closing detection unit, when the opening / closing door is in the open state, Power supply control means such as a controller 700 for stopping power supply to the material detection means, and the notification control means displays the notification state of the visual notification means after the open / close door is opened. It is characterized by executing open state notification control that is the same as the notification state immediately before the door is opened.
According to this aspect, when a sheet material conveyance failure occurs at a location corresponding to the sheet material detection unit that is a control target of the power supply control unit, when the opening / closing door is opened to eliminate the conveyance failure, Power supply to the sheet material detecting means is stopped. At this time, in this aspect, as a result of executing the open state notification control by the notification control unit, the notification state of the visual notification unit disposed at a position where the visual recognition unit is visible when the open / close door is opened is Even in the open state, the notification state is the same as that immediately before the open / close door is opened. Therefore, when the user opens the open / close door in order to eliminate the conveyance failure, even if the power supply to the sheet material detection unit is stopped, the user receives the notification from the visual notification unit and corresponds to the sheet material detection unit. It is possible to confirm the sheet material conveyance failure location and the conveyance failure elimination operation location.
During the period when the door is in the open state, it is not necessary to be the same as the notification state immediately before the door is in the open state. You may control so that it may become the same as the alerting | reporting state immediately before becoming open. The predetermined period may be determined in consideration of a normal time from when the open / close door is opened to when the user receives notification from the visual notification means.

(Aspect B)
In the aspect A, the sheet includes a moving unit such as a registration unit 3, a fixing unit 4, and guide plates 300 to 312 that can be moved with respect to the apparatus main body when the opening / closing door is opened. The material detecting means is provided on the moving unit.
On such a moving unit, sheet material detection means for detecting a sheet material to be jammed may be provided. In this case, power supply to the sheet material detection means is provided in the apparatus main body. To do. Since the moving unit is movable with respect to the apparatus main body, generally, when the moving unit is located at the home position, the power-supplied connector on the moving unit comes into contact with the power supply connector on the apparatus main body, and the moving unit becomes the home. When moving from the position, a configuration is adopted in which they are separated from each other. In such a configuration, if the moving unit is moved in a state where the power supply from the power supply unit is continued, a spark is generated when the power supply connector on the apparatus main body side and the power-supplied connector on the movement unit are separated from each other. This may cause a problem that the connector is damaged. In addition, when the mobile unit is moved to the home position and the power-supplied connector on the mobile unit comes into contact with the power supply connector on the apparatus main body side, an inrush current may be generated and various electronic circuits may be damaged. . For this reason, the sheet material detection means on the moving unit is often controlled by the power supply control means. Even in this case, when the user opens the open / close door to eliminate the conveyance failure, even if the power supply to the sheet material detection unit is stopped, the user receives the notification of the visual notification unit, and the sheet material detection unit It is possible to check the sheet material conveyance failure location and the conveyance failure elimination operation location corresponding to.

(Aspect C)
In the aspect A or B, it has storage means for storing a detection result (sensor value) of the sheet material detection means when the opening and closing door is in a closed state, and the notification control means has the opening and closing door in an open state. Then, the open state notification control is executed by controlling the visual notification unit based on the detection result of the sheet material detection unit stored in the storage unit.
According to this, the said open state alerting | reporting control is easily realizable.

(Aspect D)
In any one of the aspects A to C, the operation panel 5 or the like for notifying the sheet material conveyance failure location or the conveyance failure elimination operation location corresponding to the sheet material detection means regardless of the open / closed state of the opening / closing door. Informing means different from visual notifying means is provided, and the notifying control means corresponds to the sheet material detecting means at least when the open / close door is closed based on the detection result of the sheet material detecting means. The other informing means is informed of a sheet material conveyance failure location or a conveyance failure elimination operation location.
According to this, it is possible to notify the sheet material conveyance failure location or the conveyance failure elimination operation location before opening the opening / closing door.

(Aspect E)
In the aspect D, the visual notification means and the separate notification means notify the same sheet material conveyance failure location or conveyance failure elimination operation location.
According to this, it is possible to inform the operator of the sheet material conveyance failure location and the conveyance failure elimination operation location more reliably.

(Aspect F)
In any one of the aspects A to E, the visual notification unit is arranged in the vicinity of a sheet material conveyance failure location or a conveyance failure elimination operation location corresponding to the sheet material detection unit.
Accordingly, an operator such as a user who performs the conveyance failure elimination operation can quickly know the sheet material conveyance failure location and the conveyance failure elimination operation location.

(Aspect G)
In any of the above aspects A to F, a plurality of sheet material detection means including the sheet material detection means are arranged along the sheet material conveyance path, and two adjacent jam detection sensors 132, 133, etc. A virtual detection result storage for storing a virtual detection result corresponding to a detection result of the two sheet material detection units, wherein a distance interval on the sheet material conveyance path of the sheet material detection unit is set wider than a length in the conveyance direction of the sheet material The notification control means according to the detection (ON) of the sheet material by the sheet material detection means (jam detection sensor 132) on the upstream side in the sheet material conveyance direction of the two sheet material detection means. The virtual detection result of the virtual detection result storage means is changed to the content (ON) of sheet material detection, and the sheet on the downstream side in the sheet material conveyance direction of the two sheet material detection means is changed. Executing virtual detection control for changing the virtual detection result of the virtual detection result storage means to the content (OFF) of sheet material non-detection in response to detection (ON) of the sheet material by the material detection means (jam detection sensor 133) The notification control means is configured to notify a sheet material conveyance failure location or a conveyance failure elimination operation location based on the detection results of the plurality of sheet material detection devices and the virtual detection result of the virtual detection result storage device. Features.
According to this, the number of sheet material detection means can be reduced.

(Aspect H)
In the aspect G, when the notification control unit detects a sheet material when at least one of the detection results of the two sheet material detection units and the virtual detection result of the virtual detection result storage unit is detected, the two The sheet material detection means corresponding to the sheet material detection means is notified of a conveyance failure location or a conveyance failure elimination operation location.
According to this, it is possible to notify the sheet material conveyance failure location and the conveyance failure elimination operation location more reliably.

(Aspect I)
In an image forming apparatus for forming an image on a sheet material conveyed by a sheet material conveying device, the sheet material conveying device according to any one of the aspects A to H is used as the sheet material conveying device. To do.
According to this, when the user opens the open / close door to eliminate the conveyance failure, even if the power supply to the sheet material detection unit is stopped, the user receives the notification from the visual notification unit, and the sheet material detection unit It is possible to check the sheet material conveyance failure location and the conveyance failure elimination operation location corresponding to.

3 Registration unit (moving unit)
4 Fixing unit (moving unit)
5 Operation panel 6Y, 6M, 6C, 6K Image forming unit 7 Intermediate transfer belt 8 Secondary transfer device 9 Registration roller pair 100 to 133 Jam detection sensor 134 Dummy sensor value 200 to 217 LED lamp 300 to 312 Guide plate 400 to 403 Open / close Door 500, 501 Paper feeder 600-606 Paper conveyance path 700 Control unit

JP 2013-186287 A

Claims (9)

In the sheet material conveying apparatus that conveys the sheet material along the sheet material conveying path,
A door,
Open / close detection means for detecting the open / close state of the open / close door;
Power supply means provided in the apparatus body;
Sheet material detection means for detecting a sheet material by receiving power from the power supply means;
In order to visually notify the sheet material conveyance failure location, or to eliminate the conveyance failure of the sheet material conveyance failure location, which is arranged at a position in the apparatus main body that becomes visible when the opening / closing door is opened. Visual informing means for visually informing the conveyance failure elimination operation location operated by the user;
Based on the detection result of the sheet material detection means, notification control means for controlling the visual notification means,
Based on the detection result of the opening / closing detection means, the power supply control means for stopping the power supply from the power supply means to the sheet material detection means when the open / close door is in an open state,
The notification control means performs an open state notification control in which the notification state of the visual notification means after the opening / closing door is opened is the same as the notification state immediately before the opening / closing door is opened. A sheet material conveying apparatus characterized by the above. In the sheet | seat material conveying apparatus of Claim 1,
Having a moving unit that can be moved with respect to the apparatus main body when the open / close door is opened;
The sheet material detecting device is provided on the moving unit. In the sheet material conveying apparatus according to claim 1 or 2,
Storage means for storing the detection result of the sheet material detection means when the door is closed;
When the opening / closing door is in an open state, the notification control unit controls the visual notification unit based on a detection result of the sheet material detection unit stored in the storage unit. The sheet | seat material conveying apparatus characterized by performing these. In the sheet material conveying device according to any one of claims 1 to 3,
Regardless of the open / closed state of the open / close door, the sheet material detection unit corresponding to the sheet material detection unit, or having a notification unit different from the visual notification unit for reporting a conveyance defect elimination operation location,
The notification control means, based on the detection result of the sheet material detection means, at least indicates a sheet material conveyance failure location or conveyance failure elimination operation location corresponding to the sheet material detection device when the open / close door is closed. A sheet material conveying apparatus, characterized in that another notifying means is notified. In the sheet material conveying apparatus according to claim 4,
The visual notification means and the separate notification means notify the same sheet material conveyance failure location or conveyance failure elimination operation location to each other. In the sheet material conveyance device according to any one of claims 1 to 5,
The visual notification means is arranged in the vicinity of a sheet material conveyance failure location or a conveyance failure elimination operation location corresponding to the sheet material detection device. In the sheet material conveyance device according to any one of claims 1 to 6,
A plurality of sheet material detection means including the sheet material detection means are arranged along the sheet material conveyance path,
The distance interval on the sheet material conveyance path of two adjacent sheet material detection means is set wider than the length in the conveyance direction of the sheet material,
Virtual detection result storage means for storing virtual detection results according to the detection results of the two sheet material detection means;
The notification control unit detects the virtual detection result of the virtual detection result storage unit according to the detection of the sheet material by the sheet material detection unit upstream of the two sheet material detection units. The virtual detection result of the virtual detection result storage unit is not detected according to the detection of the sheet material by the sheet material detection unit on the downstream side in the sheet material conveyance direction of the two sheet material detection units. Virtual detection control to change to the contents of
The notification control unit is configured to notify a sheet material conveyance failure location or a conveyance failure elimination operation location based on detection results of the plurality of sheet material detection units and a virtual detection result of the virtual detection result storage unit. Sheet material conveying device. In the sheet material conveying device according to claim 7,
The notification control unit is configured to detect the sheet material when at least one of the detection result of the two sheet material detection units and the virtual detection result of the virtual detection result storage unit is detected. A sheet material conveying apparatus that notifies a corresponding sheet material conveyance failure location or conveyance failure elimination operation location. In an image forming apparatus that forms an image on a sheet material conveyed by a sheet material conveying device,
An image forming apparatus using the sheet material conveying device according to claim 1 as the sheet material conveying device.

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