JPH0619620B2 - Image forming device - Google Patents

Description

Description: TECHNICAL FIELD The present invention can set various copy modes such as a slip sheet mode and a staple mode. When the staple mode is selected and a copy operation is started, a document is circulated, Alternatively, the document is automatically conveyed and fed to the document reading position without circulating it,
The present invention relates to an image forming apparatus capable of recording an image of a document fed and fed on a sheet and binding one end of a sheet fed with or without recording the image.

(Prior Art) A copying machine equipped with an automatic document feeder and a binding means called a finisher for binding one end of a transfer sheet, which is a copy of an image of the automatically fed document, is stacked in a copying machine. Since it can be copied and automatically bound into books and ejected, it has gradually become popular in recent years in order to improve the efficiency of office work.

However, due to the increase in the number of operation keys on the operation panel due to the higher functionality of the copying machine, there are cases where the operation keys are erroneously operated or the copying operation is started without forgetting the operation. There has been a problem that a binding operation is originally performed even on a transfer sheet that does not need the binding operation, such as a single copy.

(Object) The present invention has been made in view of the above problems of the prior art, and when the staple mode is selected, an image is recorded on a single original document that does not originally require a binding operation, and the slip sheet is inserted. Sheets ejected without selecting a mode or originals are automatically fed by non-circulating document feeding, and binding operations are not performed even on sheets on which images are recorded with multiple set numbers. When the number of originals fed by the automatic document feeder is one, or when the number of sets is one and the number of originals fed by the non-circulating document feeder is one. Also, since the binding operation is meaningful when the slip sheet mode is selected, it is an object of the present invention to provide an image forming apparatus that performs the binding operation by selecting the staple mode.

(Structure) In order to achieve the above object, the present invention provides an automatic document feeder when the start of an image forming operation by the image forming unit is instructed while the staple mode is selected by the staple mode selecting unit. Circulating document feeding is performed, and when the number of documents fed by this circulating document feeding is plural, or when the number of documents fed by the circulating document feeding of the automatic document feeder is one. , When the slip sheet insertion mode is selected, the image forming operation is started without changing the staple mode, the sheets are bound by the stapling mechanism, and the document is fed by the circulating document feeding of the automatic document feeder. When the number of originals is 1, and the slip sheet insertion mode is not selected,
The staple mode can be changed, or the number of sheets to be set is one and the automatic document feeder performs non-circular document feeding, and the number of originals fed by the non-circular document feeding is one. When the slip-sheet insertion mode is selected, the image forming operation is started without changing the staple mode, and the sheets are bound by the stapling mechanism. The present invention is provided with control means for changing the staple mode when the number of originals fed by the non-circulating original feeding of the original feeding device is one and the interleaf insertion mode is not selected.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a mechanism diagram of the entire copying system in which the present invention is implemented.

Reference numeral 100 is a main body, 200 is a recycle automatic document feeder (RDF), and 300 is a finisher.

In the structure of the main body, 101 is a flash exposure lamp and a power source, irradiates a document on the contact glass 102, and exposes the photoconductor 107 through the first mirror 103, the through lens 104, and the second mirror 105. 1
Reference numeral 06 is a regulating member for preventing the excess portion of the photoconductor from being exposed.

Since the photoconductor 107 is charged in advance by the charging charger 108, an electrostatic latent image can be formed by exposure. The non-image area of this latent image is removed by the eraser 109, and the image area is visualized by the developing unit 110. This visible image is transferred to the transfer paper by the transfer charger 111, and the transfer paper is transferred to the photoconductor 10 by the separation charger 112.
Separated from 7. The transfer paper is fed from any one of the first paper feed tray 113, the second paper feed tray 114, and the third paper feed tray 115, and is transferred by the registration roller 116 to the photoconductor 10.
Synchronize with the visible image on 7. The transferred and separated transfer paper passes through the transport tank 117 and is fixed by the fixing roller 118. Incidentally, 119 is a separation claw for preventing the transfer paper from being wrapped around the fixing roller.

The transfer state of the transfer paper after this differs depending on the copying mode. In the case of the mode of discharging to the main body tray 122, the reversing claw 120 is at the position shown, and the advancing direction is determined so that the transfer sheet does not proceed to the reversing section 126. Further, the paper ejection claw 121 is switched to a position (not shown) for advancing to the main body tray 122, and the transfer paper is ejected.

On the other hand, in the mode of discharging to the finisher 300, the paper discharge claw 121 is switched to the illustrated position, and the double sided claw 123 is located at the illustrated position so as not to enter the double sided tray 125. The direction of travel is determined.
Therefore, the transfer paper is discharged to the finisher 300 through the paper discharge transport unit 124. The above is the transfer paper path for the mode in which the transfer paper is ejected from the main body 100, but the mode is different in the mode for double-sided copying.
In the case of the double-sided mode, the transfer sheet copied on the front side passes through the fixing roller 118 and advances to the reversing section 126 by the reversing claw 120 which is switched so as to proceed to the reversing section (not shown). Here, the transfer paper hits the stopper 127 and is switched back, so that the discharge claw 121 and the double-sided claw 1
It is stored in the double-sided tray 125 by 23. Double-sided tray
The lower side transfer paper is fed by the double-sided paper feed belt 128, and the transfer paper stored in 125 is advanced to the registration roller 116 through the intermediate conveyance path 129. After that, the sheet is discharged to the main body discharge tray 122 in the above-described mode, or the finisher 30
Follow the path to see if it is discharged to zero.

Next, the configuration of the RDF 200 will be described. This RDF200
Is composed of a document tray 201, an intermediate tray 202 and a document reversing section 203, and has an ADF (automatic document feeder) mode and an RDF mode.

Explaining the ADF mode, the documents set on the document tray 201 are fed from the lower side by the sheet feeding belt 204, passed through the conveyance path 205, and exposed by the number of sheets on the contact glass 102. The exposed original document advances to the reversing unit 203 by the switching claw 206 and the reversing switching claw 207. The document is switched back at an appropriate timing, the switching claw 206 is switched so as to proceed to the switchback path 208, and is stored in the intermediate tray 202. Unless there is a trouble such as a jam, the original stored in the intermediate tray 202 is fed from the lower side by the paper feed belt 209, passes through the intermediate conveyance path 210, and is discharged to the original discharge tray 211 via the contact glass. . At this time, the reversal switching claw 207 is switched so that the document advances to the document discharge tray 211.

On the other hand, in the RDF mode, one original is exposed once, and this is repeated to create one copy at a time. Therefore, the document fed from the document tray 201 passes through the conveyance path 205 and the contact glass 10
2 exposed once. The exposed document advances to the reversing unit 203 by the switching claw 206 and the reversal switching claw 207, switches back at an appropriate timing, advances to the switchback path 208, and is stored in the intermediate tray 202. When the last original is exposed on the contact glass, the original is fed from the intermediate tray 202, is exposed on the contact glass through the intermediate conveyance path 210, and the second copy is prepared. This is repeated thereafter.

The basic document operation in the ADF mode and the RDF mode is as described above, but in the case of a so-called double-sided document having information on the front and back sides, the path of the document when it is stored in the intermediate tray 202 changes. . In the ADF mode, the documents exposed by the number of sheets pass through the reversing unit 203 and are stored in the intermediate tray 202 as they are. Now the original is turned upside down. On the other hand, in the RDF mode, the document exposed once advances to the reversing unit 203 and is switched back at an appropriate timing. At this time, the switching claw 206 and another switching claw 2
12 and the document is switched back to the path 208.
Does not enter, but proceeds to the intermediate conveyance path 210. Therefore, the back surface is exposed once on the contact glass as it is, and this time it passes through the reversing unit 203 and is stored in the intermediate tray 202. Here, since the original is reversed, the second sheet is fed from the intermediate tray and the surface is exposed. This is repeated thereafter.

The RDF mechanism can also be used as an SADF (semi-automatic document feeder), and in that case, the document insertion port is 213
Is. The document advances from the insertion port 213 to the contact glass, and is discharged to the document discharge tray 211 after exposure.

Next, the structure of the finisher 300 will be described.

The transfer paper discharged from the main body 100 passes through the insertion opening 301 of the finisher, and the perforating rollers 302 (for B4), 303
It is punched by (for A4) and 304 (for A3). This punching is performed by punching while rotating as the transfer paper passes, and the punching position differs depending on the size of the transfer paper. As shown in FIG. 2, in the case of B4, the punching roller 302 for B4 punches twice,
In the case of 5, the punching roller 303 for A4 punches once. Further, in the case of A3, punching is performed twice by the A3 punching roller 304 to punch holes at the positions shown in the figure. The arrow indicates the traveling direction of the paper.
After the punching, the transfer sheets are stocked in the stapler tray 305 and are bound by the snare puller 308 one by one. Rotating cam 30 when not stapling
6 rotates the stopper 307 to the lower position. The bound transfer paper is ejected to the paper ejection tray 309.

In the configuration of the copying machine, stapling may be added depending on the combination of the RDF mode, the ADF mode and the slip sheet inserting mode, and the number of originals and the number of set sheets are also affected.

The control method of the present invention will be described with reference to the flowchart of FIG. In the non-stapling mode, copying can be started unconditionally, but when stapling is selected, RD
The operation differs depending on whether it is the F mode or the ADF mode.

In the RDF mode, if there are a plurality of originals, copying may be started and stapled. However, if there is one original, there is no point in stapling as it is. If a slip sheet as a cover sheet is inserted here, stapling means, and copying may be started. If you do not insert a slip sheet, give a warning and put the machine in standby.

In the case of ADF mode, 1 if there are multiple sets
Staples are meaningless because multiple copies are made from a single document, and a warning is issued and the machine is placed in a standby state. If the number of sets is "1" and there are a plurality of documents, the so-called 1: 1
Since it is the same as copying, it makes sense to staple it,
Copying can be started. However, when both the number of set sheets and the number of original sheets are “1”, there is no meaning of stapling because one copy is made. At this time, in the mode in which the slip sheet is inserted, copying can be started and stapling can be performed. However, if the slip sheet is not inserted, a warning is given and the machine is put in a standby state.
In the figure, m is the number of originals and n is the number of sets.

If the operator notices a mistake and changes the mode by returning to the standby state, the flow can be returned to the beginning, but if the print button is pressed upon knowing the mistake, copying is started. Since this is not a trouble of the machine, it is a copy that the operator is aware of, and therefore the copy is started. Although a tray for interleaving paper may be newly provided on the finisher side, for example, the first paper feed tray on the main body side may be used for interleaving paper.

(Effects) As described above, according to the present invention, when the start of the image forming operation by the image forming means is instructed in the state where the staple mode is selected, the automatic document feeder performs the circulating document feeding. When the number of originals sent by the circulating original feeding is plural or when the number of originals sent by the circulating original feeding of the automatic original feeding device is one, the slip sheet insertion mode is set. When is selected, the image forming operation is started without changing the stapling mode, the sheets are bound by the stapling mechanism, and the number of originals fed by the circulating original feeding of the automatic document feeder is 1 or less. If the interleaf insertion mode is not selected when the number of sheets is set, the staple mode can be changed, or the number of set sheets is 1 and the automatic document feeder is a non-circulating original. When the interleaf insertion mode is selected when the number of originals sent by this non-circulating original feed is one, the image forming operation is performed without changing the staple mode. After the start, the stapling mechanism performs the binding operation of the sheets, and when the number of set sheets is one and the number of originals fed by the non-circulating original feeding of the automatic document feeder is one, the slip sheet is inserted. When the mode is not selected, the stapling mode can be changed, so that the sheets that were originally printed without the need for binding are printed and the sheets ejected without being interleaved or the originals are circulated. It is possible to prevent the sheets from being automatically fed without performing the binding operation even on the sheets on which a plurality of images are recorded, and moreover, the number of originals fed by the circulating original feeding of the automatic original feeding device is one. In, such as when slip sheet insertion mode is selected, if it makes sense to the binding operation, it is because stapling operation of the sheet by the staple mechanism is performed, thereby improving the operability of the device.

[Brief description of drawings]

FIG. 1 is a mechanism diagram of the entire copying system which is a target of the control method of the present invention, FIG. 2 is an explanatory diagram showing a punching state of each size paper, and FIG. 3 is a flowchart showing a control operation according to the present invention. . 100 ... main body, 107 ... photoreceptor, 110 ... development section, 111 ... transfer charger, 118 ... fixing roller, 200 ... recycle automatic document feeder, 300 ...
… Finnisher, 305 …… Stapler tray, 3
08 ... Snull puller.

Claims (2)

[Claims] 1. An image forming unit, an automatic document feeder for feeding a circulating original in a circulating automatic document feeding mode, a staple mechanism for binding sheets discharged from the image forming unit, and a staple mode selection for selecting a staple mode. And a slip sheet insertion mode selection unit that selects a slip sheet insertion mode, and in the state where the staple mode is selected by the staple mode selection unit, the start of the image forming operation by the image forming unit is instructed. At this time, when the number of originals sent by the circulating original feeding of the automatic original feeding device is plural, or when the number of originals sent by the circulating original feeding of the automatic original feeding device is one, When the slip sheet insertion mode is selected, the image forming operation is started without changing the staple mode, and When the sheets are bound by the stapling mechanism and the number of originals fed by the circulation original feeding of the automatic original feeding device is one, and the interleaving sheet insertion mode is not selected, the staple mode is set. An image forming apparatus having a control unit that can change the image. 2. An image forming unit, an automatic document feeder for feeding a non-circulating document in a non-circulating automatic document feeding mode, a stapling mechanism for binding sheets discharged from the image forming unit, and a staple for selecting a stapling mode. A mode selection means and a slip sheet insertion mode selection means for selecting a slip sheet insertion mode are provided, and when the staple mode is selected by the staple mode selection means, a command to start an image forming operation by the image forming means is issued. When the number of sheets to be set is one, the number of originals fed by the non-circulating original feeding of the automatic original feeder is one, and the slip sheet insertion mode is selected, , The image forming operation is started without changing the staple mode, and the sheet binding operation is performed by the staple mechanism. The number of originals is one, and the number of originals sent by the non-circulating original feeding of the automatic original feeding device is one.
When the number of sheets is, and the slip sheet insertion mode is not selected,
An image forming apparatus comprising a control means capable of changing the staple mode.