JPH09258615A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance working efficiency by deciding whether it is a tabbed document or not, and feeding tabbed paper from a paper feeding tray in which the tabbed paper is housed in the case of deciding that it is the tabbed document. SOLUTION: A document size detecting sensor 39 being a tabbed document detecting means and a tab position detecting means is constituted of plural reflection type sensors. By depressing the start key of the operation part of the image forming device, a microprocessor(CPU) transmits a document feeding signal to an automatic document feeder(ADF). When the ADF feeds the document, the sensor 39 provided in the ADF detects the size of the document and whether it is the tabbed document or not. In the case of judging that the fed document is the tabbed document, the sensor 39 detects what is the tab position of the fed tabbed document out of A to C, and outputs the detected result to the CPU. Thus, the tabbed paper with a projecting part at the same position as the read tabbed document is fed.

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 an image forming apparatus capable of handling a tabbed document having a protrusion.

[0002]

2. Description of the Related Art Tabbed paper is used, for example, as a headline and is convenient when filing items and the like clearly. Conventionally, a plurality of techniques have been disclosed regarding a copying machine compatible with tabbed documents, for example, Japanese Patent Laid-Open No. 4-29.
In the 8369 publication, a technique called variable image shift is used to shift the image by a distance equal to the size of the original document and the size of the output page on which the image is printed, and a heading can be printed on the protrusion of the tabbed document. A device is disclosed. Similarly, Japanese Patent Laid-Open No. 6-227734 discloses a tabbed document in which the tab content of the tabbed document is detected by the ear detection means and the print content input from the input means in response to the ear position signal from the ear detection means. There is disclosed a technique for printing on the protrusion (ear) of the. Further, JP-A-7-2219
According to Japanese Patent Laid-Open No. 15-115, a tabbed document is detected before the supplied document is placed on the platen, and even if a tabbed document and a tabless document are mixed, an image document in an area other than the protrusion is formed. There is disclosed an image processing apparatus which performs optimum image processing by reading the. Still further, JP-A-3-
There are techniques disclosed in Japanese Patent Publication No. 181955 and Japanese Patent Laid-Open No. 1-301273, the former is a technique relating to double-sided copying of a document with a tab, and the latter is provided with a tab cutting forming means, and cuts a copy sheet together with copying to form a tab. Techniques for doing so are disclosed.

[0003]

However, each of the above-mentioned conventional techniques mainly discloses how to make a reliable copy on the protruding portion (tab) of the document or reads the image of the tabbed document. In this case, the present invention relates to a technique for optimally printing image information other than the protrusions on a tabless original, and does not faithfully copy various tabbed originals having protrusions at different positions as tabbed originals. . That is, in order to generate a plurality of types of tabbed documents, it is necessary to separately prepare image information to be printed on the protrusions and perform printing on the positions where the protrusions exist accurately by the conventional technique as described above. , The user must prepare the data to be printed on the protrusion of the tabbed document in advance, and further specify the number of pages where the tabbed document exists in order to determine the timing of printing on the tabbed document. However, there was a problem that work efficiency was poor. The present invention has been made in order to eliminate the above-mentioned conventional problems, and when a tabbed document is read without making complicated designations, a protrusion is formed at the same position as the read tabbed document. An object of the present invention is to provide an image forming apparatus capable of feeding a tabbed sheet having the same and copying the image information of a tabbed document including the image information described on the protrusion.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 of the image forming apparatus according to the present invention comprises a tabbed document detecting means for detecting a tabbed document, and a document to be copied. When it is determined that the tabbed document is a tabbed document, the tabbed paper is supplied from the tabbed paper tray, and the tabbed document is copied to the tabbed paper. An image forming apparatus according to a second aspect of the present invention is the image forming apparatus according to the first aspect, wherein a tabbed document detecting means for detecting a tabbed document and a tab position for detecting a tab position of the tabbed document are provided. A plurality of tabbed paper trays that store tabbed paper having different tab positions and that have appropriate tabbed paper having tabs at positions that match the tab positions of the tabbed document are stored. It is characterized in that a tabbed paper tray is selected and a tabbed document is copied to tabbed paper.

An image forming apparatus according to a third aspect of the present invention is the image forming apparatus according to the first aspect, further comprising a tabbed document detecting means for detecting a tabbed document and a copy magnification detecting means, When it is determined that the document to be copied is a tabbed document and the set copy magnification is other than 100%, the tabbed paper tray is not selected. According to a fourth aspect of the present invention, in the image forming apparatus according to the second aspect, a tabbed document detecting means for detecting a tabbed document and a tab position detecting means for detecting a tab position of the tabbed document are provided. And a tabbed paper tray is not selected in the case where the original to be copied is determined to be a tabbed original when the original has a different tab position setting.

An image forming apparatus according to a fifth aspect of the present invention is the image forming apparatus according to the third aspect, further comprising a tabbed document detecting means for detecting a tabbed document, a copy magnification detecting means, and a warning display means. When it is determined that the document to be copied is a tabbed document and the set copy magnification is other than 100%, the tabbed paper tray is not selected and the copy operation for the document is performed. The warning is displayed by the warning display means without starting. An image forming apparatus according to a sixth aspect of the present invention is the image forming apparatus according to the fourth aspect, wherein tabbed document detecting means for detecting a tabbed document and multiple-abbreviation position detection for detecting a tab position of the tabbed document. Means and a warning display means, even if it is determined that the document to be copied is a tabbed document, the tabbed paper tray is not selected and the tabbed paper tray is not selected when the document is different from the tab position setting. It is characterized in that the warning is displayed by the warning display means without starting the copying operation for the original.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a schematic view of an image forming apparatus according to the present invention, showing an example of an image forming apparatus equipped with an automatic document feeder (hereinafter referred to as ADF). In the figure, 1 is an ADF, 2 is a contact glass, 3 is a scanner unit, 4 is an image forming unit, 5 is a manual feed tray, 6 is a registration roller, 7 is a switching claw, 8 is a paper discharge tray, 9 is a fixing unit, 10 is a transfer part, 11
Is a double-sided tray, and 12 to 15 are first to fourth paper feed trays. The document fed from the ADF 1 onto the contact glass 2 is read by the scanner unit 3 and is imaged on the photoconductor by the image forming unit 4, and the first to fourth paper feed trays 12 to 12
14 or the copy sheet supplied from the manual feed tray 5 is transferred at the transfer section 10 and then the toner image transferred to the copy sheet is fixed by the fixing section 9. In addition,
The registration between the image-formed image discharged onto the discharge tray 8 and the sheet is performed by the registration rollers 6 at the same timing. At the time of double-sided copying, the sheet for which the first side has been copied passes through the fixing unit 9 and is then reversed and stored in the double-sided tray 11 by the switching claw 7. After that, the paper is fed from the double-sided tray 11 and, after copying and fixing are performed again, the paper is ejected to the paper ejection tray 8. Further, during the synthetic copy, the copy-finished sheet on the first side passes through the path on the double-sided tray side by the switching claw 7, but is not stored in the double-sided tray and is conveyed to the registration roller 6 as it is, and the second sheet is transferred at a predetermined timing.
The second copy is executed, the paper passes through the fixing unit, and is ejected to the paper ejection tray.

FIG. 2 is a schematic diagram for explaining the operation of the image forming unit 4. A negative charge is uniformly applied to the photosensitive drum by the charging roller 21 provided around the photosensitive drum 20, and then the light emitted from the light source is reflected by the document on the contact glass 3 to expose the reflected light. The electrostatic latent image is formed on the body drum 20 by the intensity of light. Next, the eraser 23 removes the charging potential of the non-image portion, and the developing sleeve 24 adheres toner to the electrostatic latent image on the drum to form a visible image. A bias voltage is applied to the developing sleeve 24. After that, in order to improve transfer efficiency, separation performance, and cleaning efficiency, the static eliminator 25 exposes the entire surface of the drum before transfer, lowers the surface potential of the drum, applies a negative bias to the transfer belt 26, and charges the drum positively. The formed toner image is transferred onto paper and conveyed. Reference numeral 27 denotes a photo sensor, which is used to read the development density of a fixed pattern developed on the photosensitive drum 20 by the photo sensor 27 and feed it back to the toner replenishment to perform image control and the like. After the transfer belt 26 transfers the toner image onto the transfer paper, the cleaning blade 28 scrapes off the toner remaining on the photosensitive drum 20, and the collected toner is conveyed again to the toner hopper (not shown). Further, in order to erase the negative residual charge on the photoconductor drum 20,
A static eliminator 29 performs static elimination by exposing the entire surface of the ED to prepare for the next copy. The toner image transferred onto the transfer paper is fixed in the fixing unit 9 as described above, and is carried out to the paper discharge tray.

FIG. 3 is a view showing an ADF 1 used in the image forming apparatus according to the present invention, in which 30 is an original table,
Reference numeral 31 is a document discharge portion, 32 is a discharge driving roller, 33 is a reverse guide claw, 34 is a guide roller, 35 is a discharge detection sensor, 3
6 is a reverse driving roller, 47 is a conveyor belt pressing roller, 38
Is a conveyor belt fixing roller, 39 is a document size detection sensor,
40 is a resist detection sensor, 41 is a pull-out roller, 4
2 is a separation roller, 43 is a separation belt, 44 is a document stopper, and 45 is a calling lever. The document size detecting sensor 39 has a function as a tabbed document detecting means and a tab position detecting means. Manuscript is manuscript table 3
It is placed on the document holder 0 and abutted against the document stopper 44 to be set. When the original comes into contact with the original stopper 44, an original set detection sensor (not shown) detects the setting of the original. After that, when the start key of the image forming apparatus is pressed, the calling solenoid (not shown) turns off.
Then, the calling lever 45 presses the document, the calling roller (not shown) rotates, and the document is sent out. A static elimination brush (not shown) is attached to eliminate static electricity generated when the original is called.

FIGS. 4A and 4B are views for explaining the separating / feeding mechanism in the ADF 1, and when the feeding start signal is input from the image forming apparatus main body, the feeding motor 49 is provided.
Turns forward (clockwise). As a result, calling roller 4
6. The separation roller 42 and the pullout roller 47 rotate. Therefore, the set original is regulated by the separation belt 48, and only the lowermost original is conveyed. When the document is detected by the registration detection sensor 40, the paper feed motor 49
Is switched from normal rotation to reverse rotation, and only the pull-out roller 47 is rotated by the action of the one-way clutch, and the document is sent out from the separation section to the conveyance section. Then, when the registration detection sensor 40 is turned off, the paper feed motor is stopped.
When the original is set on the contact glass, the paper feeding motor 49 is rotated in the normal direction again, the second original is called, separated by the processing described above, and when the registration detection sensor 40 is turned on again, the paper feeding motor 49 is turned on. Stops and finishes the document advance.

As shown in FIG. 4C, the tabbed document detecting means and the document size detecting sensor 39 which is the tab position detecting means are composed of a plurality of reflection type sensors and measure the time in the document feeding direction. And which sensor is ON
It is possible to determine the document size, the document with tabs, and the tab position depending on whether or not the document is tabbed. Thus A
The document placed on the document table 30 of the DF 1 is sequentially separated and conveyed from the lowermost surface thereof, and is conveyed onto the contact glass 2 of the image forming apparatus by the conveyance belt. At this time, the document size detection sensor 39 described above sends information such as the document size and the tab position to the image forming apparatus, and the desired processing described later is performed. The copied document is discharged to the document discharge unit 31 via the discharge driving roller 32.
Further, in the double-sided original mode, the sheet is again conveyed onto the contact glass 2 via the reversing drive roller 36 and the reversing guide claw 33, and copying is performed.

FIG. 5 shows an example of the keys of the operation unit and the display unit. The operation unit 50 is roughly classified into a right operation unit 50a provided with a ten-key pad and a central operation provided with a display unit such as a liquid crystal panel. The right operation unit 50a includes a mode clear key 51 for setting the copy mode to the standard mode, a numeric keypad 52 for inputting numerical values, and an interruption of the copy operation. And a clear / stop key 53 for clearing the number of characters, an enter key 54 for confirming a numerical value, a start key 55 for issuing a copy operation disclosure instruction, a tab paper setting key 56 for setting tab paper as a paper tray, and a tab paper setting. It has a tab sheet setting display section 57 for displaying what is done.

Further, the central operation section 50b displays the paper size direction confirmation display 60 displayed when the proper magnification does not exist in the paper designated scaling mode, the selection tray display 61 for displaying the selected tray, and the location of the paper feed tray. A paper feed tray location display 62 to be displayed, a mode combination display 63 which is displayed when a combination of various modes is impossible, a paper size display 64 which displays a paper size for each paper feed tray, a paper end, Warning display 65 for displaying toner end, jam, etc., paper vertical / horizontal display 66 for vertical / horizontal display of paper for each paper tray, copy ready display 67 for displaying copy ready status, set number display for displaying set number of copies 68, a copy number display 69 for displaying the number of copies executed, a density display 70 for displaying the copy image density level in seven steps, Concentration key 7 for image density adjustment of over
1. An automatic paper selection key 72 for setting the automatic paper selection mode, an automatic selection display 73 for displaying that the automatic paper selection mode is set, a paper key 74 for selecting a manual paper tray, and the same size setting. The same size key 75 for
It has a paper designation scaling key 76 for setting the paper designation scaling mode, a paper designation scaling mode display 77 for displaying that the paper designation scaling mode is set, and a magnification display 78 for displaying a copy magnification. ing. The paper size direction confirmation display 60 has a function as a warning display means.

Further, the left operation unit 50c has a center / frame deletion display 81 for displaying the center + frame deletion mode, a frame deletion display 82 for displaying the frame deletion mode, a center deletion display 83 for displaying the center deletion mode, and a single-sided original → Double-sided copy mode is displayed Single-sided → double-sided copy mode display 8
4, double-sided original → double-sided copy mode display double-sided → double-sided copy mode display 85, composite copy mode display 86, composite erase mode display 86, center erase mode, frame erase mode and center + frame erase mode setting erase key 87 , 1-sided original → 2-sided copy mode setting, 2-sided original →
It has a double-sided tray-related key 88 for setting the double-sided copy mode and the composite copy mode.

FIG. 6 is a block diagram of a control circuit of the image forming apparatus according to the present invention. 90 is a random access memory (RAM) for storing variables, 91 is a battery for driving the RAM, and 92 is a program or fixed data. Is a read only memory (ROM) for storing the data, 93 is a microprocessor (CPU) for reading and executing the program stored in the ROM 92, 94 is an input port for transmitting input signals such as sensors and keys to the microprocessor 93, 95
Is an output port for driving a solenoid, a clutch, a motor, an indicator, etc., 96 is an ADF controller, 97 is a serial port, and the ADF controller 96 is connected to the microprocessor 93 through the serial port 97 and is provided for the ADF1. It is possible to transmit / receive the document size received by the respective sensors 39 and 40 and the signal for feeding / discharging the document transmitted to the ADF 1.

That is, the output of each sensor provided in the ADF 1 is supplied to the ADF controller 96 through the serial port 97, and the detection outputs of the various keys of the operation unit and the sensors provided in the image forming apparatus are input through the input port 94. Input to the microprocessor 93, the microprocessor 93 performs desired processing in accordance with the program stored in the ROM 92, and controls the operation of the manual paper feed clutch and various displays on the operation unit via the output port 95.
Note that the microprocessor 93 stores various settings of the image forming apparatus, for example, information such as copy magnification in the RAM 90, and refers to the information stored in the RAM 90 as appropriate to control the image forming apparatus. It has a function as a detection means.

FIG. 7 shows tab sheets A, B, which have different tab positions.
It is the figure which showed the state which piled up C so that the position of a tab might be easy to understand. Next, the control flow of the image forming apparatus according to the present invention, particularly the processing of the tab sheet setting key will be described with reference to FIG.
A description will be given based on the flowchart shown in (c). Since the processing flow of the tab sheet setting key corresponding to each tray of the manual feed tray and the first to fourth trays is the same,
The processing flow for one tray will be described. First,
If there is no initial setting and the tab sheet setting key corresponding to each of the manual feed tray and each of the first to fourth trays is pressed (S1, YES), it is determined whether or not there is a setting (S1).
2) If the tab sheet setting corresponding to each tray is not set (S2, YES), it is determined whether the tabbed sheet A is set in another tray (S3). At this time, if the tabbed sheet A is not set in another tray (S3, NO), the tray is set as the tabbed sheet A (S4), and the process is ended. In step S3, if tabbed paper A has already been set in another tray (S3, YES), it is determined whether tabbed paper B has been set in another tray (S5). If the tabbed paper B is not set in the tray of (S5, N
O), set the tray to tabbed paper B (S6),
finish. Furthermore, in step S5, when the tabbed paper A is already set in another tray (S5, Y
ES), it is determined whether or not tabbed paper C is set in another tray (S7), and tabbed paper C is set in another tray.
If is not set (S7, NO), the tray is set as the tabbed paper C (S8), and the process is ended.

On the other hand, when the tab sheet is already set in any of the trays in the step S2 (S
2, NO), and the flow is as shown in FIG. 8B. First, it is determined whether the tab sheet setting is A setting (S).
11), if set to A (S11, YE
S), it is determined whether B is set in another tray (S12), and if it is not set to B (S12,
NO) and B are set (S13) and the process ends. In step S12, if B is set in another tray (S12, YES), it is determined whether or not C is set in another tray (S14), and C is not set. If it is set to C in this case, and if another tray is set to C, the process ends without setting (S1).
4, 15, 16).

If the tab sheet setting that has already been set is not A in step S11 (S11, NO), the flow is as shown in FIG. 8C, and it is determined whether or not the tab sheet setting is B ( S21), if it is set to B (S21, YES), it is judged whether it is set to C on another tray (S22), and if it is not set to C (S22, NO). ), Set to C and end (S2
3). Further, in step S21, if it is not set to B (S21, NO), or if it is set to C in another tray in step S22 (S22,
If YES, the process ends without setting (S24, S25).
In this way, no setting → set to A → set to B → set to C →
It is designed to be set in the order of no setting. However, it is controlled so that it does not overlap with the settings in other trays.

Next, the setting flow of the automatic paper selection mode in the image forming apparatus according to the present invention will be described with reference to the flow chart shown in FIG. First, when the automatic paper selection key is pressed (S30), it is checked whether or not the automatic paper selection mode is selected (S31), and when the automatic paper selection mode is selected (YES in S31), the automatic paper selection mode is canceled.
It ends (S32). In step S31,
If the automatic paper selection mode is not set (S31, NO), the automatic paper selection mode is set and the process ends (S33). Next, the operation of the image forming apparatus according to the present invention will be described. First, when the start key 55 of the operation unit 50 of the image forming apparatus is pressed, the microprocessor (CP
U) 93 sends a document feed signal to ADF 1,
When the DF1 feeds a document, the document size detection sensor 39 provided in the ADF1 determines the document size and whether the document has a tab or not.
Is detected. When it is determined that the fed document is a tabbed document, the document size detection sensor also determines whether the tab position of the fed tabbed document is A, B, or C. 39 detects and outputs to the micro controller (CPU) 93 of the image forming apparatus.

For example, when the image forming apparatus that detects that a tabbed document has been fed is set in the automatic paper selection mode, the tray that stores the paper that matches the type of the fed document is used. Select (1st-4th Paper Tray),
The copy operation for the original is performed. After the copying operation is completed, the microprocessor 93 of the image forming apparatus A
A document discharge signal is transmitted to the controller 96 of the DF1, and a paper feed signal is transmitted when the next document exists. The ADF 1 sends the information of the type of the fed document and the tab position in the case of the tabbed document to the microprocessor 93 every time the document is fed, so that the microprocessor 93 of the image forming apparatus sends the information. Whenever is sent, tray automatic selection processing is performed.

FIG. 10 is a flow chart showing the automatic tray selection process. First, it is checked whether or not the automatic paper selection mode is selected (S40), and if it is not the automatic paper selection mode (S40, NO). The paper selection process is not performed and the paper selection process is not performed. However, step S
If the automatic paper selection mode is selected at 40 (S40, YES), it is determined whether the document fed to the ADF 1 is a tabbed document (S41), and if it is not tabbed paper (S41, NO). ), Targeting a tray that is not set to tabbed paper, and taking into consideration the size of the original x magnification, select the tray that contains the target paper (S
42). On the other hand, if it is determined in step S41 that the fed document is a tabbed document (S41, YE
S), it is judged whether or not the copy setting magnification is 100% (S43), and if the magnification is set to a value other than 100% (S43).
43, NO), the paper size direction confirmation display 60 of the operation unit 50 of the image forming apparatus is turned on to notify the user (S4).
4).

If the copy setting magnification is 100% (S43, YES), the tabbed paper of the same size as the original detected by the original size detection sensor 39 provided in the ADF 1 is used for the tabbed paper. It is determined whether or not it is present in the assigned tray (S45), and if the size of the fed original does not match the tabbed paper stored in the tray set as tabbed paper (S45, N
O), the operation unit 50 of the image forming apparatus similar to the processing described above.
The paper size direction confirmation display 60 is turned on to notify the user (S44). Further, when it is determined that the tabbed paper having the same size as the tabbed document fed by the ADF 1 is stored in the tray set as the tray for tabbed paper (S45, YES), it is stored in the tray. It is determined whether or not the tab position of the tabbed sheet and the tab position of the document match (S46).
That is, when tabbed paper having the same size as the fed tabbed document and having tabs at the same positions is stored in the paper feed tray, and the paper feed tray is set as a tray for tab paper, Selects the tray and feeds the paper so that the copying operation is performed (S47). Note that step S
If the tab position of the document does not match the tab position of the tabbed paper stored in the paper feed tray in 46, (S
46, NO), the paper size direction confirmation display 60 of the operation unit 50 of the image forming apparatus is turned on in the same manner as the above-described processing to notify the user (S44).

In the above description, the document size detection sensor for detecting the size of the document and whether the document is a tabbed document or not is described by using the ADF 1 provided with the document size detection sensor. It is not necessary to equip the ADF, and for example, a sensor is provided below the contact glass 2 of the image forming apparatus so that the original is the contact glass 2.
When the contact glass 2 is above the contact glass 2, the size of the document, the presence or absence of the tab, and the tab position may be detected. Also, regarding the setting of the tabbed paper tray, the manual setting procedure was explained, but it is possible to set automatically by detecting the presence of the protrusion of the tabbed document by providing a sensor in the paper feeding tray. It may be configured.

[0025]

As described above, in the image forming apparatus according to the first aspect, it is determined whether or not the original is a tabbed original, and if the original is a tabbed original, a paper feed containing tabbed paper is stored. Since the tabbed paper is fed from the tray, the work efficiency can be improved. In the image forming apparatus according to the present invention, a plurality of tabbed sheets having different tab positions are stored in the paper feed tray, and the tab positions of the fed tabbed document are detected to feed the proper tabbed sheets. With this configuration, it is possible to correctly copy a plurality of types of tabbed documents having different tab positions, and improve work efficiency.

In the image forming apparatus according to the third aspect of the present invention, since the means for determining whether or not the set magnification at the time of copying is 100%, that is, whether it is the original size, is provided, when a tabbed document is fed. In addition, when the same tabbed paper as the original is stored in the paper feed tray, the image information in the tab of the original can be accurately copied to the tab position of the tabbed paper. It is possible to improve efficiency and prevent erroneous copying. An image forming apparatus according to claim 4, further comprising a tabbed document detecting means and a means for detecting a tab position thereof, wherein the document fed by the tabbed document detecting means is detected as a tabbed document. Even if there is, the copy operation is performed only when the tab position of the tabbed document matches the tab position of the tabbed paper stored in the paper feed tray in the image forming apparatus, improving work efficiency. In addition, it is possible to prevent erroneous copying.

In the image forming apparatus according to the fifth aspect of the present invention, the tabbed document is fed because the means for determining whether the set magnification at the time of copying is 100%, that is, the original size and the warning display means are provided. When the paper is printed and the same tabbed paper as the original is stored in the paper feed tray,
The image information in the tab portion of the original can be accurately copied to the tab position of the tabbed paper, and the set magnification is 100.
When a value other than% is set, a warning is displayed, so that work efficiency is improved and erroneous copying can be prevented.
The image forming apparatus according to claim 6, further comprising a tabbed document detecting means, a means for detecting the tab position, and a warning display means, wherein the document fed by the tabbed document detecting means is a tabbed document. Even if it is detected, the copying operation is performed only when the tab position of the tabbed document and the tab position of the tabbed paper stored in the paper feed tray in the image forming apparatus match, and when they do not match. Since it is configured to display a warning, the work efficiency is improved and
Misprinting can be prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of an image forming apparatus according to the present invention.

FIG. 2 is a schematic diagram for explaining the operation of the image forming unit of the image forming apparatus according to the present invention.

FIG. 3 is an ADF used in an image forming apparatus according to the present invention.
FIG.

4A and 4B are diagrams for explaining a separation / feeding mechanism in an ADF, and FIG. 4C is a diagram showing a document size detection sensor.

FIG. 5 is a diagram showing an example of keys and a display unit of an operation unit of the image forming apparatus according to the present invention.

FIG. 6 is a block diagram of a control circuit of the image forming apparatus according to the present invention.

FIG. 7 is a diagram showing a document (paper) with a tab.

8A to 8C are flowcharts of processing of a tab sheet setting key of the image forming apparatus according to the present invention.

FIG. 9 is a flowchart for setting the automatic paper selection mode in the image forming apparatus according to the present invention.

FIG. 10 is a flowchart of an automatic tray selection process in the image forming apparatus according to the present invention.

[Explanation of symbols]

12, 13, 14, 15 ... Paper feed tray, 39 ...
Document size detection sensors (tabbed document detection means, tab position detection means), 60 ... Sheet size direction confirmation display (warning display means), 93 ... Microprocessor (copy magnification detection means).

Claims (6)

[Claims] 1. A tabbed document detecting means for detecting a tabbed document is provided, and when it is determined that the document to be copied is a tabbed document, tabbed paper is supplied from the tabbed paper tray to detect the tabbed document. An image forming apparatus characterized in that copying is performed on tabbed paper. 2. A plurality of tabs, each of which includes tabbed document detecting means for detecting a tabbed document and tab position detecting means for detecting a tab position of the tabbed document, and which accommodates tabbed sheets having different tab positions. From the attached paper tray, select the tabbed paper tray that contains the appropriate tabbed paper that has a tab at the position that matches the tab position of the tabbed original, and copy the tabbed original to the tabbed paper. The image forming apparatus according to claim 1, wherein: 3. A tabbed document detection means for detecting a tabbed document and a copy magnification detection means are provided, and when the document to be copied is determined to be a tabbed document, and the set copying is performed. The image forming apparatus according to claim 1, wherein the tabbed paper tray is not selected when the magnification is not 100%. 4. A tabbed document detecting means for detecting a tabbed document and tab position detecting means for detecting a tab position of the tabbed document, wherein the document to be copied is determined to be a tabbed document. 3. The image forming apparatus according to claim 2, wherein the tabbed paper tray is not selected even for a document different from the tab position setting. 5. A tabbed document detection unit for detecting a tabbed document, a copy magnification detection unit, and a warning display unit are provided, and it is determined that the document to be copied is a tabbed document, 4. When the set copy magnification is other than 100%, the tabbed paper tray is not selected, and the warning display means displays a warning without starting the copying operation for the original. Image forming device. 6. A tabbed document detection means for detecting a tabbed document, a multi-abbreviation position detection means for detecting the tab position of the tabbed document, and a warning display means are provided, and the document to be copied is a tabbed document. Even if it is determined that there is a tab, the tabbed paper tray is not selected if the original differs from the tab position setting, and the warning display means displays a warning without starting the copying operation for the original. The image forming apparatus according to claim 4, which is characterized in that.