JPH08262932A - Image forming device - Google Patents

Abstract

PURPOSE: To provide an image forming device capable of easily removing jammed sheets and excellent in operability even in the case where a paper is occurs. CONSTITUTION: The image forming device is provided with plural paper sensors for detecting the passage of a transfer paper in a carrying path and a control panel having a display part 80 capable of graphically displaying various kinds of information. When the jamming of the transfer paper is detected by the paper sensors, jam occurrence positions are displayed on the display part 80 and the processing method of removing the jammed paper in the jam occurrence position specified by an operator, out of the displayed jam occurrence positions is graphically displayed on the display part 80.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, and more particularly to
The present invention relates to an image forming apparatus including an operation panel having a display unit.

[0002]

2. Description of the Related Art Generally, an image forming apparatus such as a copying machine is provided with an operation panel for inputting various copying conditions such as an operation mode, the number of copies and a copy magnification. Further, the operation panel is provided with a display section for displaying the operating state of the copying machine, various messages and the like.

In a conventional copying machine, when a paper jam occurs, the copying operation is automatically stopped and the approximate position of the paper jam is displayed on the display section of the operation panel, or the paper jam is detected. Occurrence and corrective action are displayed as a message. When the operator removes the jammed paper in accordance with the displayed rough paper jam occurrence position or the message, the copying operation can be restarted.

[0004]

However, in the conventional copying machine, the jam occurrence position displayed on the display portion of the operation panel when the paper jam occurs is a rough one, and the accurate paper jam occurrence position can be determined. It will be difficult. Therefore, the operator needs to check several places near the displayed paper jam occurrence position to eliminate the jammed paper, which makes the operation troublesome.

Further, in a copying machine which displays a countermeasure against a paper jam as a message on the display section of the operation panel, a specific paper jam occurrence position is not shown. It cannot be immediately determined whether there is any, and it takes time to remove jammed paper.

Further, even if paper jams occur at a plurality of locations, first, a message indicating a coping method for removing the first jammed paper is displayed, and the operator opens the casing of the copying machine according to the message. When the jammed paper is removed and the case or the like is returned to the original state, a message indicating the coping method for the next jammed paper is displayed on the display unit for the first time. Therefore, the operator needs to open the housing again to remove other jammed paper, even though the operator has judged that the jammed paper has been removed and closed the housing and the like, and the removal work is extremely difficult. Be troublesome.

The present invention has been made in view of the above points, and an object thereof is to provide an image forming apparatus which can easily remove jammed paper even when a paper jam occurs and is excellent in workability. It is in.

[0008]

In order to achieve the above object, the image forming apparatus of the present invention according to claim 1 is an image forming means for forming an image on a transfer sheet, and a conveying means for conveying the transfer sheet through a conveying path. Means, a detecting means for detecting a jam of the transfer sheet in the transport path, a first display means for displaying a jam occurrence position of the transfer sheet detected by the detecting means, and a jam displayed on the display means. The present invention is characterized by comprising: a designating unit for designating a generation position and a second display unit for graphically displaying a jam processing method at the jam generation position designated by the designating unit.

According to a second aspect of the present invention, there is provided an image forming apparatus for forming an image on a transfer sheet, a conveying means for conveying the transfer sheet through a conveying path, and a jam of the transfer sheet in the conveying path. Detecting means for detecting, first display means for displaying the jam occurrence position of the transfer sheet detected by the detecting means, designating means for designating the jam occurrence position displayed on the display means, and the designating means Second display means for graphically displaying the jam processing method at the designated jam occurrence position; erasing means for detecting the end of the jam processing and erasing the graphic display displayed on the second display means; It is characterized by having.

According to a third aspect of the present invention, in the image forming apparatus of the present invention, the image forming means for forming an image on the transfer sheet, the conveying means for conveying the transfer sheet through the conveying path, and the transfer sheet for the transfer sheet in the conveying path. Detecting means for detecting a jam, first display means for displaying a jam occurrence position of the transfer sheet detected by the detecting means, designating means for designating the jam occurrence position displayed on the display means, and the designation Second display means for graphically displaying the jam processing method at the jam occurrence position designated by the means, and end of jam processing at the jam occurrence position designated by the designating means, and all detected by the detecting means Control means for sequentially operating the first and second display means until the transfer paper jam processing is completed. It is characterized in.

[0011]

According to the image forming apparatus of the first aspect of the present invention configured as described above, when the jam of the transfer sheet is detected by the detecting means, the jam occurrence position of the transfer sheet is displayed by the first display means. It Then, when the displayed jam occurrence position is designated by the designating means, the processing method for eliminating the transfer sheet at the designated jam occurrence position is graphically displayed by the second display means.

According to the image forming apparatus of the second aspect, when the processing of the jammed transfer sheet is completed, the graphic display by the second display means is erased. Claim 3
According to the image forming apparatus of the first aspect, when the jam of the transfer sheet is detected by the detecting unit, the jam occurrence position of the transfer sheet is displayed by the first display unit. Then, when the displayed jam occurrence position is designated by the designating means, the processing method for eliminating the transfer sheet at the designated jam occurrence position is graphically displayed by the second display means. When there are a plurality of detected jam occurrence positions, when the jam processing of the first transfer sheet is completed, the remaining jam occurrence positions are displayed again by the first display means, and the jam designated next by the designating means is displayed. The method of processing the transfer sheet at the generation position is displayed by the second display means. Then, the above operation is repeated until all the detected jammed sheets are processed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which an image forming apparatus according to the present invention is applied to a digital copying machine will be described in detail below with reference to the drawings. As shown in FIGS. 1 and 2, the digital copying machine includes an apparatus main body 10, and in the apparatus main body 10, a scanner 4 that reads image information from a document and an image forming unit 6 that functions as an image forming unit are provided. Has been.

On the upper surface of the apparatus main body 10, an operation panel 2,
Further, an original placing table 12 made of transparent glass on which the original D is placed is provided. Further, an automatic document feeder 7 (hereinafter referred to as ADF) for automatically feeding a document onto the document table 12 is provided on the upper surface of the apparatus body 10. The ADF 7 is arranged so as to be openable and closable with respect to the document mounting table 12, and also functions as a document retainer for bringing the document D mounted on the document mounting table 12 into close contact with the document mounting table 12.

The ADF 7 includes a document tray 8 on which the document D is set, an empty sensor 9 for detecting the presence or absence of the document, a pickup roller 14 for taking out the documents one by one from the document tray, and a paper feed roller 15 for conveying the taken out documents. ,
A pair of aligning rollers 16 for aligning the leading edge of the document and a conveyor belt 18 arranged so as to cover almost the entire document placing table 12 are provided. Then, the plurality of originals set on the original tray 8 face up, that is, the bottom page, that is,
The aligning rollers 16 are taken out in order from the last page.
After being aligned by, the sheet is conveyed to a predetermined position on the document placing table 12 by the conveying belt 18.

In the ADF 7, a reversing roller 20, a non-reversing sensor 21, a flapper 22, and a paper discharging roller 23 are arranged at the end opposite to the aligning roller pair 16 with the conveyor belt 18 interposed therebetween. The document D whose image information has been read by the scanner 4 described later is sent out from the document placing table 12 by the conveyor belt 18, and the reversing roller 20,
ADF 7 via flapper 21 and paper discharge roller 22
The document is discharged onto the document discharge unit 24 on the upper surface. When reading the back surface of the document D, by switching the flapper 22, the document D conveyed by the conveyor belt 18 is reversed by the reversing roller 20 and then moved again to a predetermined position on the document table 12 by the conveyor belt 18. Sent.

The scanner 4 provided in the apparatus body 10
Has a light source 25 such as a fluorescent lamp for illuminating the document D placed on the document table 12 and a first mirror 26 for deflecting the reflected light from the document D in a predetermined direction. The first mirror is attached to the first carriage 27 disposed below the document table 12. The first carriage 27 is movably arranged in parallel with the document table 12, and is reciprocated below the document table by a drive motor via a toothed belt (not shown) or the like.

A second carriage 28, which is movable in parallel with the original placing table, is disposed below the original placing table 12. The first carriage 2 is attached to the second carriage 28.
Second and third mirrors 30 and 31 for sequentially deflecting the reflected light from the document D deflected by 6 are attached at right angles to each other. The second carriage 28 is driven by the first carriage 27 by a toothed belt or the like that drives the first carriage 27, and at the same time, the original is placed at a speed half that of the first carriage. It is moved in parallel along the table 12.

Below the document table 12, an image forming lens 32 for converging the reflected light from the third mirror 31 on the second carriage 28 and a reflected light focused by the image forming lens are received. And a CCD sensor 34 for performing photoelectric conversion. The imaging lens 32 is movably arranged in a plane including the optical axis of the light deflected by the third mirror 31 through a drive mechanism, and by moving itself, the reflected light is at a desired magnification. Form an image. Then, the CCD sensor 34
The incident reflected light is photoelectrically converted and an electric signal corresponding to the read document D is output.

On the other hand, the image forming unit 6 includes a laser exposure device 40.
The laser exposure apparatus 40 includes a semiconductor laser 41 as a light source, a polygon mirror 36 that continuously deflects the laser light emitted from the semiconductor laser 41, and a polygon that rotationally drives the polygon mirror at a predetermined rotation speed. A motor 37 and a deflection optical system 42 that deflects the laser light from the polygon mirror and guides it to a photosensitive drum, which will be described later, are provided.

The semiconductor laser 41 is controlled to be turned on / off according to image information of the document D read by the scanner 4, facsimile transmission / reception document information, or the like, and this laser light is passed through the polygon mirror 36 and the deflection optical system 42. The electrostatic latent image is formed on the peripheral surface of the photosensitive drum by exposing and scanning the peripheral surface of the photosensitive drum.

The image forming section 6 also has a rotatable photosensitive drum 44 as an image carrier disposed substantially in the center of the apparatus main body 10, and the peripheral surface of the photosensitive drum from the laser exposure device 40. To expose a desired electrostatic latent image. Around the photosensitive drum 44, a charger 45 for charging the drum peripheral surface to a predetermined electric charge, and a toner as a developer for the electrostatic latent image formed on the peripheral surface of the photosensitive drum to supply a desired image. Developer 4 for developing with density
6. A transfer charger 48 that transfers the toner image formed on the photoconductor drum onto a transfer paper P fed from a paper cassette, which will be described later. The transfer charger 48 is integrally formed with the transfer charger 48 and transfers the transfer paper P from the photoconductor drum. A peeling charger 47 for separating, a peeling claw 49 for mechanically peeling the transfer sheet P from the peripheral surface of the photosensitive drum, a cleaning device 50 for cleaning the toner remaining on the peripheral surface of the photosensitive drum, and charge removal of the peripheral surface of the photosensitive drum. The static eliminator 51 is arranged in order.

An upper cassette 52, a middle cassette 53, and a lower cassette 54, which can be pulled out from the apparatus body, are arranged in a laminated state at the lower part of the apparatus body 10,
Transfer papers of different sizes are loaded in the respective cassettes. A large-capacity feeder 55 is located on the side of these cassettes.
This large-capacity feeder accommodates about 3000 sheets of frequently used transfer paper, for example, A4 size transfer paper. In addition, the large capacity feeder 55
Above the above, the paper feed cassette 5 that also serves as the manual feed tray 56
7 is detachably attached.

In the apparatus main body 10, a conveying path 5 extending from each cassette and the large-capacity feeder 55 through a transfer portion located between the photosensitive drum 44 and the transfer charger 48.
8 is formed, and a fixing device 60 is provided at the end of the transport path. A discharge port 61 is formed on the side wall of the apparatus main body 10 facing the fixing device 60, and a discharge tray 62 is formed at the discharge port.
Is installed.

In the vicinity of the upper cassette 52, the middle cassette 53, the lower cassette 54, the paper feeding cassette 57, and the large-capacity feeder 55, the pickup roller 6 for taking out the sheets one by one from the cassette or the large-capacity feeder.
3 are provided respectively. Further, in the transport path 58,
Transfer sheet P taken out by pickup roller 63
A large number of paper feed roller pairs 64 that convey the paper through the conveyance path 58.
Is provided.

A registration roller pair 65 is provided on the upstream side of the photosensitive drum 44 in the transport path 58. The registration roller pair 65 corrects the inclination of the transfer sheet P taken out, aligns the leading edge of the toner image on the photosensitive drum 44 with the leading edge of the transfer sheet P, and is the same as the moving speed of the peripheral surface of the photosensitive drum. The transfer paper P is fed to the transfer unit at a speed. A pre-aligning sensor 66 for detecting the arrival of the transfer paper P is provided in front of the registration roller pair 65, that is, on the paper feed roller 64 side.

The transfer sheets P taken out one by one from each cassette or the large-capacity feeder 55 by the pickup roller 63 are sent to the registration roller pair 65 by the sheet feed roller pair 64. Then, the transfer paper P is sent to the transfer unit after the front end of the transfer paper P is aligned by the registration roller pair 65. In the transfer section, the developer image formed on the photosensitive drum 44, that is, the toner image is transferred onto the sheet P by the transfer charger 48. The transfer sheet P on which the toner image has been transferred is separated from the peripheral surface of the photosensitive drum 44 by the action of the separation charger 47 and the separation claw 49, and the conveyance path 58 is formed.
Fixing device 60 via a conveyor belt 67 that constitutes a part of
Be transported to. Then, after the toner image is melted and fixed on the transfer paper P by the fixing device 60, the transfer paper P is discharged onto the paper discharge tray 62 through the discharge port 61 by the paper feed roller pair 68 and the paper discharge roller pair 69.

Below the conveying path 58, the transfer sheet P that has passed through the fixing device 60 is reversed and the registration roller pair 65 is again provided.
An automatic double-sided device 70 for sending to is provided. The automatic double-sided device 70 includes a temporary stacking unit 7 that temporarily stacks the transfer sheets P.
1, a transport path 72 that branches from the transport path 58 and guides the copy sheets P that have passed through the fixing device 60 to the temporary stacking section 71, and a pickup roller 73 that takes out the copy sheets P stacked in the temporary stacking section one by one. And a paper feed roller 75 for feeding the taken-out transfer paper to the registration roller pair 65 through the reversing path 74. Further, at a branch portion between the transport path 58 and the transport path 72, a sorting gate 7 that selectively sorts the copy paper P to the discharge port 61 or the reversing path 72.
6 is provided.

When performing double-sided copying, the transfer sheet P that has passed through the fixing device 60 is guided to the conveying path 72 by the sorting gate 76, and is transferred to the temporary stacking section 71 with the surface on which the toner image is formed facing upward. After being temporarily accumulated, it is sent to the registration roller pair 65 through the reversing path 74 by the pickup roller 73 and the paper feed roller pair 75. Then, the transfer paper P is aligned by the pair of registration rollers 65 and then sent to the transfer portion again, and the toner image is transferred to the back surface of the transfer paper P. After that, the transfer sheet P is transferred to the conveyance path 5
8, the fixing device 60 and the paper discharge roller 69 are used to discharge the paper onto the paper discharge tray 62.

The above-mentioned pickup roller 63,
73, the paper feed rollers 64 and 75, the registration roller 65, the aligning roller, the conveyor belt 67, the paper discharge roller 69, and the like constitute the conveying means in the present invention.

In the apparatus body 10, the transport paths 58, 7
In the vicinity of 2 and the reversing path 74, a large number of paper sensors S1 to S15 are provided as detecting means for detecting the transfer paper P passing through the conveying path and the reversing path. These sheet sensors S1 to S15 are used for the conveyance paths 58 and 7
2 and the transfer sheet P passing through the inversion path 74 are arranged at a predetermined interval so as to always face at least one sheet sensor. The paper sensor S2 also functions as the pre-registration sensor 66.

As shown in FIGS. 2 and 3, the apparatus main body 1
An operation panel 2 is provided on the front part of the upper surface of the 0. The operation panel 2 includes a display unit 80, a document size key 84a for selecting a document size, a paper size key 84b for selecting a paper size, and a magnification adjustment key 8 for changing a copy magnification.
6, density adjustment key 88 for changing the density of the image to be copied,
Numeric keypad 90, clear key 91, copy start key 92,
Various mode setting keys 94 for setting various operation modes and many other keys are provided.

The mode setting key 94 is a double-sided copy key 95 for selecting and setting various double-sided copy modes, a mode for adding a front cover to the front of a plurality of copy bundles, and a front cover and a back cover being blank. A cover mode key 96 for selecting and setting a cover mode such as a mode to be added with, and a margin key 9 for selecting and setting a binding margin such as right binding and left binding
7. Other various mode setting keys are included.

As shown in FIGS. 3 and 4, the display unit 80
Is composed of a touch panel type liquid crystal display panel 82, and shows a copying condition 85 such as the number of input copies, a setting operation mode, a copying magnification, a schematic diagram 83 schematically showing the shape of the entire digital copying machine, and a jam processing method described later. Graphic display, predetermined message, etc. are selectively displayed. The display section 80 constitutes the first and second display means of the present invention. The display unit 80 is composed of a touch panel type liquid crystal display panel 82, detects the coordinates of the position touched by the operator's finger, and inputs the detection signal to the panel control unit described later. Also works as.

FIG. 5 schematically shows the control mechanism of the digital copying machine configured as described above. The control mechanism is
Main CPU 10 for controlling the operation of the entire digital copying machine
This main CPU includes an ADF control unit 102 for controlling the ADF 7, a scanner control unit 104 for controlling the scanner 4, an image processing unit 106 for processing image information read by the scanner 4, and an image forming unit 6. A printer control unit 108 for controlling the operation, a panel control unit 110 for controlling the operation of the operation panel 2, and paper sensors S1 to S15 are connected.

The panel control unit 110 includes a liquid crystal display panel 82, a liquid crystal control unit 112 that controls the operation of the liquid crystal display panel 82, a ROM 116 that stores various graphic data indicating a method for processing jammed paper, and the like. ROM
A graphic control unit 114 for processing the data read from is connected.

In the digital copying machine constructed as described above, the display unit 80 of the operation panel 2 normally displays the schematic diagram 83 of the copying machine shown in FIG.
When the copy condition is set by the various keys of, the set copy condition 85 such as the number of copies input, the operation mode, and the copy magnification is also displayed.

When the copy start key 92 is pressed after setting the copy conditions, the copy operation is started. During the copying operation, the transfer paper P passing through the conveyance paths 58 and 72 and the reversing path 74 is
The passage is detected by turning on or off any of the sheet sensors S1 to S15. Then, based on the detection signals from the sheet sensors S1 to S15, the current passing position of the transfer sheet P is sequentially displayed in the schematic view 83 of the display unit 80.

For example, when an image is copied on one side of the transfer paper P taken out from the large-capacity feeder 55, the display unit 8
At 0, the conveyance state of the transfer paper P as shown in FIG. 4 is shown. FIG. 6 shows a display example of the display unit 80 when an image is copied on one side of the transfer paper P taken out from the upper cassette 52. Further, FIG. 7 shows a display example of the display unit 80 when an image is copied on both sides of the transfer paper P taken out from the large-capacity feeder 55.

On the other hand, when a paper jam of the transfer paper P, that is, a paper jam occurs during the copying operation, the copying operation of the copying machine is temporarily stopped, and as shown in FIG. The jam occurrence position is detected based on the detection signal from S15, and the paper jam occurrence position is displayed in the schematic diagram 83 displayed on the liquid crystal display panel 82 of the operation panel 2.

FIG. 9 is a diagram schematically showing the positional relationship between the sheet jam occurrence position that can be displayed on the display section 80 and the sheet sensors S1 to S15.
When the sheet sensor S1 is not turned off after a lapse of a certain time after the sheet sensor S1 detects the transfer sheet P set in the above and the sheet feeding roller 64 is driven, the panel control unit 110 determines that a sheet jam has occurred. Then, the jam occurrence position P1 is lit and displayed on the display unit 80. If the paper sensor S3 does not turn off even after a lapse of a certain time after the transfer paper P is detected by the paper sensor S3, the panel control unit 110 determines that a paper jam has occurred and the jam occurrence position P.
4 is lit up on the display unit 80. In addition, the panel control unit 110 uses a total of 15 jam occurrence positions P1 to P15 based on the detection signals from the sheet sensors S1 to S15.
Is detected and is selectively displayed on the display unit 80.

FIG. 10 shows the take-out position of the upper cassette 52 and the display section 80 in which a paper jam has occurred between the fixing device 60 and the discharge tray 62 and the jam occurrence positions P13 and P5 are displayed in blinking. There is. When a paper jam occurs, the display section 80 will display "Paper jam."
Please press the paper you want to remove "message 98 is displayed.

In response to this message 98, when one of the jam occurrence positions P13 and P5 displayed on the liquid crystal display panel 82 is pressed and designated by the operator,
The liquid crystal display panel 82 detects the coordinate position of the pressed portion and inputs the detection signal to the panel control unit 110. Thereby, the panel control unit 110 specifies the specified jam occurrence position, and the graphic control unit 114 reads out the graphic data indicating the processing method for removing the transfer sheet from the specified jam occurrence position from the ROM 116. Then, the liquid crystal control unit 112 graphically displays the processing method on the liquid crystal display panel 82 of the display unit 80 based on the read graphic data.

For example, when the jam occurrence position P13 is designated, the processing method shown in FIG. 11 is graphically displayed on the liquid crystal display panel 82. When the operator removes the jammed paper according to this graphic display and the off detection signal is input from the paper sensor S11, the panel control unit 110 erases the graphic display on the liquid crystal display panel 82, and when the jammed paper remains. Again, the remaining jam occurrence position P5 is displayed together with the schematic diagram 83 shown in FIG. 9 and the message 98.

When the jam occurrence position P5 is pressed and designated through the liquid crystal display panel 82, a graphic display showing a processing method for removing the jammed paper from the jam occurrence position P5 is displayed on the liquid crystal display panel 82. In this case, the processing methods shown in FIGS. 12 to 14 are sequentially displayed graphically on the liquid crystal display panel 82. When the operator removes the jammed paper according to this graphic display and the off detection signal is input from the paper sensor S4, the panel control unit 110 causes the liquid crystal display panel 82.
When the upper graphic display is erased and there is no other jammed paper, the schematic diagram 83, the copy condition 85 and the message "Ready to copy" are displayed on the liquid crystal display panel 82, and the jam processing is ended.

According to the digital copying machine configured as described above, when a jam of the transfer paper occurs, the jam occurrence position is displayed in detail on the display unit 80 of the operation panel 2 so that the operator can be notified accurately. It is possible to notify the location of a jam. In addition, the processing method for removing the transfer paper from the jam occurrence position designated by the operator among the jam occurrence positions displayed on the display unit 80 will be described.
By graphically displaying 0, the operator can work in a state in which the position to remove the jammed transfer paper sheet can be understood, and the jam processing can be easily performed.

When a paper jam has occurred at a plurality of locations, a plurality of jam occurrence positions are displayed on the display section 80, so that the operator can easily determine that a paper jam has occurred at a plurality of locations. In this case, when any one of the jam occurrence positions is designated by the operator, a processing method for removing the transfer sheet from the designated jam occurrence position is displayed graphically, so that the operator always indicates the jam occurrence position and the treatment method. You can make an accurate decision. Then, it is possible to immediately start the next jam processing after the completion of one jam processing.

Therefore, according to the digital copying machine having the above-mentioned structure, it is possible to easily and promptly perform the jam processing and restart the copying operation. The present invention is not limited to the above-described embodiments, but can be variously modified within this range. For example, in the above-described embodiment, the jam occurrence position may be displayed in a lighted state, and the jam occurrence position may be displayed in a color different from the display indicating the normal paper transport position.

Further, although the configuration is such that the jam occurrence position displayed by using the touch panel is directly pressed as the designating means, a normal liquid crystal display panel is used for the display section 80, and the jam occurrence position is displayed on the liquid crystal together with an arbitrary number. The jam occurrence position may be designated by displaying on the display panel and inputting the number corresponding to the jam occurrence position with the ten keys of the operation panel 2. Furthermore, it is also possible to display a cursor in the display unit 80 and to specify an arbitrary jam occurrence position with this cursor. The present invention is not limited to the digital copying machine, and may be applied to other image forming apparatuses having an operation panel such as an analog copying machine.

[0050]

As described above in detail, according to the present invention, the jam occurrence position of the transfer sheet is displayed in detail on the display unit, and the jam occurrence position displayed corresponds to the designated jam occurrence position. By displaying the jam processing method to be performed on the display unit, it is possible to easily remove the jammed paper even when a paper jam occurs, and it is possible to provide an image forming apparatus having excellent workability.

[Brief description of drawings]

FIG. 1 is a sectional view of a digital copying machine according to an embodiment of the present invention.

FIG. 2 is a perspective view of the digital copying machine.

FIG. 3 is a plan view showing an operation panel of the digital copying machine.

FIG. 4 is an enlarged plan view showing a display unit of the operation panel.

FIG. 5 is a block diagram showing a control mechanism of the digital copying machine.

FIG. 6 is a plan view showing a display on the display unit when copying on a transfer sheet fed from an upper cassette.

FIG. 7 is a plan view showing a display on the display unit when performing double-sided copying on a transfer sheet fed from a large-capacity feeder.

FIG. 8 is a flowchart showing a control operation when a paper jam occurs.

FIG. 9 is a plan view schematically showing a positional relationship between a jam occurrence position displayed on a display unit and a paper sensor.

FIG. 10 is a plan view showing a display on the display unit when a paper jam has occurred.

FIG. 11 is a diagram showing a graphic display of a jammed paper processing method displayed on the display unit according to a designated jam occurrence position.

FIG. 12 is a diagram showing a graphic display of a jammed paper processing method displayed on the display unit according to a designated jam occurrence position.

FIG. 13 is a diagram showing a graphic display of a jammed paper processing method displayed on the display unit according to a designated jam occurrence position.

FIG. 14 is a diagram showing a graphic display of a jammed paper processing method displayed on a display unit according to a designated jam occurrence position.

[Explanation of symbols]

2 ... Operation panel, 6 ... Image forming unit, 64 ... Paper feed roller,
58, 72 ... Conveyance path, 74 ... Inversion path, 80 ... Display section, 8
2 ... Liquid crystal display panel, 83 ... Schematic diagram, 110 ... Panel control unit, 112 ... Liquid crystal control unit, 114 ... Graphic control unit, S1 to S15 ... Paper sensor, P1 to P15 ... Jam occurrence position.

Claims (4)

[Claims] 1. An image forming means for forming an image on a transfer sheet, a conveying means for conveying the transfer sheet through a conveying path, a detecting means for detecting a jam of the transfer sheet in the conveying path, and a detecting means for detecting the jam. First display means for displaying the jam occurrence position of the transferred transfer sheet, designating means for designating the jam occurrence position displayed on the display means, and a jam processing method at the jam occurrence position designated by the designating means. An image forming apparatus comprising: a second display unit that graphically displays. 2. An image forming means for forming an image on a transfer sheet, a conveying means for conveying the transfer sheet through a conveying path, a detecting means for detecting a jam of the transfer sheet on the conveying path, and a detecting means for detecting the jam. First display means for displaying the jam occurrence position of the transferred transfer sheet, designating means for designating the jam occurrence position displayed on the display means, and a jam processing method at the jam occurrence position designated by the designating means. And an erasing means for detecting the end of the jam processing and erasing the graphic display displayed on the second display means. . 3. An image forming means for forming an image on a transfer sheet, a conveying means for conveying the transfer sheet through a conveying path, a detecting means for detecting a jam of the transfer sheet on the conveying path, and a detecting means for detecting the jam. First display means for displaying the jam occurrence position of the transferred transfer sheet, designating means for designating the jam occurrence position displayed on the display means, and a jam processing method at the jam occurrence position designated by the designating means. Is displayed graphically, and the end of the jam processing at the jam occurrence position designated by the designating means is detected, and the jam processing for all the transfer papers detected by the detecting means is completed until the jam processing is completed. An image forming apparatus comprising: a control unit that operates the first and second display units. 4. An image forming means for forming an image on a transfer sheet, a conveying means for conveying the transfer sheet through a conveying path, a detecting means for detecting the transfer sheet passing through the conveying path, and a display capable of graphic display. Section, designating means for designating an arbitrary part displayed on the display section, and a jam occurrence position when the transfer sheet conveyance state and the transfer sheet jam are detected according to the detection result of the detecting means. Is displayed on the display unit, and when the jam occurrence position is designated by the designation unit, a control unit that displays a jam processing method at the designated jam occurrence position on the display unit is provided. An image forming apparatus characterized by.