JPH09328234A - Image processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To omit the counting operation of documents before the start of the image formation, and to easily confirm the formed image. SOLUTION: The image information of documents in odd-numbers is read out to be copied on the first face of each sheet P, and is guided to a duplex pass 40. On the other hand, the image information of documents S in even numbers is read out to be memorized in a memory unit 46, the image information of the documents S in even numbers memorized in the memory unit 46 is copied on the second face of each sheet P reversed through the duplex pass 40, and then the sheet is discharged from a discharge port 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original processing apparatus capable of separating and feeding a plurality of originals stacked on an original placing means from both the uppermost original and the lowermost original, and a double-sided sheet. The present invention relates to an image processing apparatus having an automatic double-sided image forming apparatus capable of forming an image.

[0002]

2. Description of the Related Art Generally, in a copying machine having a document processing device, an image is formed, sheets discharged outside the device are stacked in document order, and are discharged face up (image surface facing upward). In this way, the document surface is placed on the feed tray of the document processing device in the order of pages, and the last page of the plurality of documents is placed on the document glass by the lower feed in order from the last page. It is configured to read information.

Conventionally, when a plurality of originals are copied on both sides, since the copying is started from the last page as described above,
It is necessary to judge whether the first side of the first sheet should be copied or not, depending on whether the originals are odd or even. In order to confirm the number of sheets, it was necessary to perform a count operation of feeding the originals in advance.

[0004]

However, in the above-mentioned conventional example, before starting the copying operation on both sides of the sheet,
Since an extra operation of counting the number of originals is included, there is a drawback that the productivity (processing efficiency) of double-sided copying is significantly reduced.

Further, when processing is performed from the first page of the document in order to avoid this counting operation, in order to discharge the sheet onto the discharge tray in the order of the document reading processing, the sheet after passing through the image fixing unit is Once stocked in an intermediate tray etc., they are processed one by one inside the main body of the machine, and then discharged to the outside of the machine with the copied image on the back side of the sheet. The user can easily check the copied image. Since it is not possible to check it and it will be confirmed after the copying operation is completed, and it is not possible to check the inconvenience of the image in the middle, so if there is inconvenience, a large number of copying errors will occur. was there.

[0006] The present invention is to solve the above problems,
It is an object of the present invention to provide an image processing apparatus capable of omitting the document counting operation before the start of image formation and easily confirming an image formed on a sheet.

[0007]

A typical structure according to the present invention for attaining the above object is that a plurality of originals stacked on the original placing means are arranged from the highest original to the lowest original. In an image processing apparatus having a document processing apparatus that can be selectively separated and fed also from a sheet and an automatic double-sided image forming apparatus that can form images on both sides of a sheet, when the image is formed on only one side of the sheet, the document placing means It is possible to select the feeding from the lowest original placed on the upper side, and to select the feeding from the uppermost original placed on the original placing means when images are formed on both sides of the sheet. The image processing device is configured.

Further, the image processing apparatus records image information on at least the maximum amount of sheets that can be accommodated on the double-sided path from the image forming position until the sheet returns to the image forming position for double-sided image formation. It is characterized by having a memory device for storing.

Since the present invention is configured as described above, when an image is formed on only one side of the sheet, the lowest original placed on the original placing means is fed to read from the last page of the original. It is possible to carry out processing, form images on sheets sequentially, discharge the sheets from the last page face-up to the outside of the machine, and stack the sheets one by one so that the pages of the originals can be stacked.

When forming images on both sides of the sheet,
The uppermost original placed on the original placing means is fed to perform the reading process from the first page of the original, and the image information of the odd-numbered original corresponding to the first side is sequentially imaged on the first side of the sheet. The image information of the even-numbered original document, which is formed on the second surface, is temporarily stored in the memory device, and the even-numbered original document stored in the memory device is stored on the second surface of the inverted sheet via the double-sided path. The image information can be sequentially formed on both sides of the sheet.

Further, at this time, after the surface on which the image is formed on the first surface of the sheet is exposed to the outside of the machine from the discharge port face-up via the double-sided path, the image is formed on the second surface of the sheet. It is possible to stack the originals in face-up order and discharge them outside the machine to stack them on top of each other.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a digital copying machine as an example of an image processing apparatus according to the present invention will be specifically described with reference to the drawings. 1 is a cross-sectional explanatory view showing the overall structure of an image processing apparatus according to the present invention, FIG. 2 is a cross-sectional explanatory view showing the structure of a document processing apparatus, FIG. 3 is a plan explanatory view showing the structure of a separation unit, and FIG.
FIG. 4A is an operation explanatory diagram showing the flow of an original in the copy mode in the original processing apparatus, and FIG. 4B is an operation explanatory diagram showing the flow of an original in the facsimile mode in the original processing apparatus, FIGS. 11 is a schematic diagram showing a coordinated operation of an original reading operation by the original processing apparatus and a copying operation by an automatic double-sided copying apparatus on a sheet which is controlled to be conveyed through a double-sided path, and FIG. 12 is a view showing image information of a double-sided original. 13 is a cross-sectional explanatory view showing the configuration of the document processing apparatus, FIG. 13 is a cross-sectional explanatory view showing the configuration of the front stapler apparatus for stapling, FIG. 14 is a front view of the front stapler apparatus, and FIG. 15 is a rear stapler apparatus. 17 is a cross-sectional explanatory view showing the configuration of FIG. 16, FIG. 16 is a schematic plan view showing a state of stapling by the stapler device, FIG.
18A and 18B are diagrams showing the state of stapling at the time of single-sided copying, FIGS. 18A and 18B are diagrams showing the state of stapling at the time of double-sided copying, and FIG. 19 is ejected with the document surface facing downward. It is a figure which shows the structure of the original processing apparatus mounted in a tray.

First, the configuration of the image processing apparatus according to the present invention will be described with reference to FIG. In FIG. 1, B is an automatic double-sided copying apparatus as an automatic double-sided image forming apparatus capable of forming images on both sides of the sheet P, which is a digital copying machine. On the upper part of the automatic double-sided copying machine B, a document feeder A which constitutes a document processor is placed. A finishing device C for classifying and stapling the bundle of sheets P discharged from the automatic double-sided copying device B is arranged on the discharge side of the sheets P of the automatic double-sided copying device B (left side in FIG. 1). This device is a digital multi-function copying machine, and has a facsimile function as well as a copying function.

Next, referring to FIGS. 1 to 4, a document feeding device A
Will be described in detail. In the document feeder A, a sheet-like document S composed of a plurality of sheets of paper, synthetic resin, or the like stacked on a feeding tray 1 serving as a document placing means is arranged from the highest document S to the lowest document S. Also, the user can selectively separate and feed the sheets, and the user stacks the document S bundle face-up (upward on the document surface) on the feeding tray 1.

FIG. 2 is an enlarged view showing the details of the feeding / separating section of the document feeder A, and a half-moon roller 4 serving as a pickup roller at the time of lower feeding is arranged on the downstream side of the feeding tray 1. ing. A swing guide 2 is arranged at a position corresponding to the half-moon roller 4, and a shutter 3 for contacting the leading end of the document S and regulating the leading end position of the document S is provided on the downstream side of the swing guide 2. There is.

A pre-separation guide 5 guides the document S fed through the shutter 3 to a separation section which will be described later with reference to FIG. Reference numeral 6 denotes a conveyor belt, which conveys the document S onto a document glass 10 arranged on the upper surface of the automatic double-sided copying machine B. 7, 8, 12, and 13 are guides, respectively.

Reference numeral 14 denotes a discharge roller for discharging the original S fed by the half-moon roller 4 from the lower side and returned by the conveying roller 9 or the like onto the feed tray 1, while the discharge roller 14 is placed on the feed tray 1. It also serves as a pickup roller that feeds the document S from the uppermost position.

Numerals 11a and 11b are pinch rollers which are pressed against the transport roller 9 and are driven to rotate, and numeral 15 is a pinch roller which is pressed to the discharge roller 14 and driven to rotate. 16 is the discharge roller
A rotation center axis of an arm 17 that rotatably supports 14,
Reference numeral 19 denotes an original pressing plate that presses the original S placed on the feeding tray 1.

Reference numerals 20 and 21 are a separation roller and a separation belt which constitute a separation section, 22 is a drive pulley for rotationally driving the separation belt 21, 23 is a belt support for supporting the separation belt 21, 24
Is a driven pulley, 25 is a cam shaft, and 26 is a jump base.

Next, the switching mechanism between the upper separation and the lower separation of the separation section of the document feeder A will be described in detail with reference to FIG. FIG. 3 is a conceptual diagram showing the arrangement of the separation roller 20 and the separation belt 21 in the longitudinal direction. The separation method of this separation section is a so-called comb tooth separation method, in which the upper and lower separation members rotate in opposite directions (conveying direction and conveying reverse direction), and the friction coefficient of the members rotating in the conveying direction is calculated in the conveying reverse direction. By setting the friction coefficient higher than that of the rotating member, only one original S that is in direct contact with the member rotating in the conveying direction is fed, and the rest is separated by being returned by the member rotating in the reverse direction. .

Reference numeral 20a shown in FIG. 3 denotes a separating roller, which has an EPDM (ethylene / propylene
Gen monomer). This separating roller 20a is P
It is fixed to a flange 20a 'made of OM (polyoxymethylene) resin by press fitting. Reference numeral 21a is a separation belt, which is an EPDM having a friction coefficient with paper of 1.2. The pair of the separation roller 20a and the separation belt 21a forms a lower separation nip portion in the copy mode, and the separation roller 20a is rotated in the transport direction and the separation belt 21a is rotated in the transport reverse direction. Separately feed only.

Further, at the time of upper separation in the facsimile mode, separation is performed by a pair of separation roller 20b and separation belt 21b. Separation roller 20b is an EPDM with a friction coefficient of 1.2 against paper,
The separation belt 21b is EPDM having a friction coefficient with paper of 2.0. The separation belt 21b is rotated in the conveying direction and the separation roller 20b is rotated in the reverse direction, so that only the uppermost document S is separated and fed.

Further, in this structure, the separation pair for upper separation hinders separation during lower separation, and the separation pair for lower separation also hinders separation during upper separation. Therefore, at the time of lower separation, the lowermost position of the separation belt 21a is set to the height h in FIG.
The separation belt 21b has a height h'in the figure. That is, the nip of the upper separating pair is released.
Further, at the time of upper separation, the separation belt 21b is set to the height h in the drawing and the separation belt 21a is set to the height h'in the drawing to release the nip of the separation pair for lower separation.

Next, the flow of document processing by the document feeder A will be outlined with reference to FIGS. 4 (a) and 4 (b). Manuscript S
Are stacked face up (original surface upward) in page order and set on the feed tray 1. In the copy mode, as shown in FIG. 4A, the original S on the feeding tray 1 is fed by the half-moon roller 4 from the lowest page which is the last page.
Along the arrow line in (a), it enters into the separation section composed of the separation roller 20 and the separation belt 21, is separated by the separation section, and only the lowest original S is fed one sheet, It is placed on the original glass 10 on the upper surface of the double-sided copying machine B.

When the image exposure for the copying operation of the automatic double-sided copying machine B, which will be described in detail later, is completed, the document S is printed.
4 is conveyed to the left by the conveying belt 6 as indicated by the arrow in FIG. 4A, reversed by the conveying roller 9, and then returned to the feed tray 1 by the discharge roller 14. Thus
The originals S are sequentially fed / discharged from the lowest position, and when the reading process of all the originals S is completed and the originals S are ejected onto the feeding tray 1, the original S returns to the state where the user first set.

Next, in the facsimile mode, as shown in FIG.
As shown in (b), as in the above-described copy mode, the document S bundle stacked on the feeding tray 1 face up in page order, the discharge roller 14 acts as a so-called pickup roller. The upper document S is sequentially fed to the separation unit.

The discharge roller 14 is rotatably held at the tip of an arm 17 which is rotatable around a fixed rotation center shaft 16, and one original S is fed in the facsimile mode. Every time the original S falls on the bundle of originals S and the highest original S
The uppermost original S is fed to the separating portion.

At this time, the separation section performs the function of upper separation,
Only the highest document S is fed in the direction of the arrow in FIG. 4 (b). When the document S is placed on the document glass 10, the automatic double-sided copying machine B reads the image information of the document S for facsimile transmission. After the reading is completed, the original S is conveyed by the conveyor belt 6 in the right direction of the figure along the arrow in FIG. 4B, and passes through the right discharge roller pair 27 to the automatic double-sided copying machine B.
The sheets are discharged facedown (downward from the document surface) onto a discharge tray 18 provided in the stack, and are stacked in page order. In this way, after all the originals S have been conveyed and read, the bundle of originals S is stacked on the discharge tray 18 in the same page order as when initially set on the feeding tray 1.

Next, the structure of the automatic double-sided copying machine B will be described with reference to FIG. The automatic double-sided copying machine B is a digital compound copying machine, and in the copy mode, after reading the image information of the document S fed by the document feeder A, an image corresponding to the image information of the document S is printed on the sheet P. In the facsimile mode, it has a function of reading the image information of the document S fed by the document feeder A and transmitting it to another device by facsimile in the facsimile mode.

Sheets P made of paper, synthetic resin, or the like, which are accommodated in cassettes 31 of various sizes, are selectively fed by a pickup roller 32 and separated and fed one by one by a pair of separating rollers 33. Further, it is conveyed by the conveying roller pair 34 and reaches the registration roller pair 35. Then, a toner image is formed on the sheet P sent by the registration roller pair 35 in synchronization with the rotation of the photoconductor drum 36 to a copying unit 37 as an image forming unit which the electrophotographic photoconductor drum 36 faces, and a fixing unit is formed. The image is fixed by passing through 38.

Inside the automatic double-sided copying machine B, the loop-shaped double-sided path 40 including the registration roller pair 35, the copying section 37, the fixing unit 38, and the discharge port 39 for the sheet P of the automatic double-sided copying machine B is provided. A copying station is formed. By passing through this copying station, the sheets P after copying on the first side are sequentially re-stacked on the copying section 37 without being stacked on an intermediate tray or the like. It is designed to be transported for double-sided copying.

An optical system 41, which is movable in the left-right direction in FIG. 1, is arranged below the original glass 10.
An exposure lamp 42 provided in 41 illuminates the original surface of the original S placed on the original glass 10, reflects the reflected light by a mirror 43, guides it to a lens 44, and a CCD through the lens 44. The image information of the document S is read by the (charge coupled device) 45. Then, the image information read by the CCD 45 is temporarily stored in the memory device 46, and the image information of the original document S is output from the memory device 46 to the laser beam scanner 47 serving as a conversion device, according to the image information of the original document S. A laser beam is exposed on the photosensitive drum 36 to form a latent image.

A toner image is formed on the latent image formed on the photosensitive drum 36 by the developing device 48, and the toner image formed on the photosensitive drum 36 is copied onto the sheet P conveyed to the copying section 37. .

Next, the operation of performing single-sided and double-sided copying on the sheet P by using the image processing apparatus configured as described above will be described.

First, the case where the image information of the one-sided original S is read and copied on one side of the sheet P will be described. When the user sets the single-sided copy mode on the operation unit (not shown), sets the required number of copies, and presses the copy start button, the control unit provided in the automatic double-sided copy device B controls the half-month of the document feeder A. The rollers 4, the separation roller 20, and the separation belt 21 are operated to sequentially convey the original S on the feeding tray 1 from the last page of the lowest order to the original glass 10 to read the image information, and the cassette 31 is sequentially conveyed. The sheet P is copied and discharged from the discharge port 39.

At this time, the flapper 49 of the copying station,
By the action of 50, the sheet P passing through the fixing unit 38 is conveyed by the conveying roller pairs 51 and 52 and the discharging roller pair 53 and discharged without passing through the loop-shaped double-sided path 40.
The sheets are ejected from the last page in a face-up manner (upward on the image side).

Next, the movement of the sheet P when the image information of the one-sided original S is read and both sides are copied on the sheet P will be described in detail with reference to FIGS. 1 and 5 to 11. First, a stack of documents S is stacked face up (document surface upward) on the feeding tray 1 in page order (see FIG. 5).

Then, as described above, when the copy start button is pressed after setting the double-sided copy mode, the separation roller 20 and the separation belt of the document feeder A are controlled by the control section.
21 operates to sequentially convey the original S on the feeding tray 1 onto the original glass 10 from the topmost top page.

As shown in FIG. 6, when the exposure by the exposure lamp 42 is started after the placement of the _first original S ₁ on the original glass 10 is completed, the image information is read by the laser beam scanner 47. Is exposed on the photoconductor drum 36 through the developing device 48.
The image of the _first original document S ₁ is copied on the first surface of the first sheet P ₁ that has been developed by, and has been sent from the cassette 31 and reached the copying section 37.

Then, the first sheet that has passed through the copying section 37
To P₁Through the fixing unit 38, the action of flappers 49, 50
And conveyance roller pair 51, 52 and discharge roller pair 53
And sheet P₁The tip of the
You. At this time, the first sheet P ₁The first side of
Exposed (upward on the image surface) from the discharge port 39.

When the trailing edge of the _first sheet P ₁ has passed the flapper 50, the pair of discharge rollers 53 is temporarily stopped, and the flapper 50 rotates clockwise in FIG. The pair 53 rotates in the opposite direction, and the pair of conveying rollers 54 guides the _first sheet P ₁ to the loop-shaped double-sided path 40 (see FIG. 7).

On the other hand, in the document feeder A, discharging the first document S ₁ is in a face-down (original surface down) trays 18
After being discharged to the upper side, the second original S ₂ is sent onto the original glass 10 and exposure is started by the exposure lamp 42 to start CCD 45.
Reads the image information, but this image information is not immediately exposed to the photosensitive drum 36, and the image information of the _second document S ₂ is stored in the memory device 46 and held (see FIG. 7). ).

Next, the second original S ₂ is discharged face-down (original surface downward) onto the _first original S ₁ discharged onto the discharge tray 18, and then the third original S ₃ is placed. S ₃ is sent onto the original glass 10, the exposure is started by the exposure lamp 42, the image information is read by the CCD 45, the exposure is performed on the photosensitive drum 36 through the laser beam scanner 47, and the S ₃ is sent from the cassette 31. Then, the image of the _third document S ₃ is copied onto the first surface of the _second sheet P ₂ that has reached the copy unit 37 (see FIG. 8).

Then, the third document S ₃ is discharged onto the discharge tray 18
After the second document S ₂ discharged above is face-down (document surface downward) discharged and stacked, the fourth document S
₄ is sent onto the original glass 10, the exposure is started by the exposure lamp 42, and the CCD 45 reads the image information. However, as described above, this image information is not immediately exposed to the photosensitive drum 36, and 4 The image information of the first document S ₄ is stored in the memory device 46 and held (see FIG. 9).

On the other hand, in the copying section 37, the first sheet P ₁
Reverses through the double-sided path 40, and the registration roller pair 35 advances the second sheet P ₁ of the _first sheet P ₁ in such a direction as to face the photoconductor drum 36 at the timing of entering the copying section 37.

In synchronization with this, the image information of the _second document S ₂ stored in the memory device 46 is transmitted to the laser beam scanner 47, and the laser beam scanner 47 causes the _two image data on the photosensitive drum 36. The image information of the first document S ₂ is exposed, and the _second document S is placed on the second surface of the _first sheet P ₁ .
_{The second} image is copied (see FIG. 9).

The first sheet P copied on the second side
₁ is discharged through the fixing unit 38 to the discharge port 39 with the first surface facing down. At this time, the second sheet P ₂ also has a double-sided pass
The image information of the _fourth original S ₄ stored in the memory device 46 is transmitted to the laser beam scanner 47 via the laser beam scanner 47, and is transferred to the copying unit 37 via the laser beam scanner 47. The _fourth document S _{4 is} placed on the body drum 36.
Image information is exposed and the image of the fourth document S ₄ is copied on the second surface of the second sheet P ₃ (see FIG. 10).

The second sheet P copied on the second side
The sheet ₂ is discharged to the outside of the machine through the fixing unit 38 through the discharge port 39, and at this time, the sheet 2 is discharged and stacked with the first surface facing down on the first sheet P ₁ (see FIG. 11).

When the number of copies of the original S is large, the above steps are repeated. Further, if a memory device having a larger capacity is provided by expansion or the like, all document information can be stored in the memory device by one reading, and therefore, when copying a large number of documents S, the sheets P are consecutively printed. Since it can be sent and copied on the first side, and can be continuously copied on the second side returned after passing through the double-sided pass 40, the productivity (processing efficiency) can be further improved.

In the above-described embodiment, the case where the double-sided copy is performed from the single-sided original S has been described, but as shown in FIG.
When two reading means E and F are arranged so as to face the front and back surfaces of the conveyed document S, and image information of the double-sided document S is read by the reading means E and F, respectively, and then double-sided copying is performed, The document S is turned upside down through the double-sided path D shown in FIG. Then, the front surface of the document S is exposed onto the photosensitive drum 36 immediately after the image information is read, but the back surface image information is read and then stored in the memory device 46.

As described above, if the document processing apparatus capable of simultaneously reading the image information recorded on both sides of the document S is used, the above-mentioned operation can be executed from the copying of the first part, so that further productivity is improved. Can be improved.

Next, the finishing (processing such as stapling and sorting) of the sheet P discharged from the automatic double-sided copying machine B will be described with reference to FIGS. 1 and 13 to 18.
In the configuration of the above-described apparatus, in addition to the stapler that staples from the front side that is used during normal single-sided copying, another stapler that can staple from the back side is provided, or the stapler can be moved upside down to staple from both sides. Will be needed.

Therefore, in this embodiment, an example in which the finishing device C shown in FIG. 1 is separately provided with a stapler from the front side and a stapler from the back side will be described. In FIG. 13, reference numeral 61 denotes a base that supports the entire stapler device 60 and is fixed to the main body of the finishing device C. 62 is a lower jaw, which is a rotation axis with respect to the base 61.
It is rotatably supported around 62a.

Further, the grooved cam portion 62b provided at one end of the lower jaw 62 has a grooved cam shape and is engaged with the caulking shaft portion 63b of the upper unit 63. Further, the upper unit 63 can swing about a hinge shaft 64 as a fulcrum.

The crank arm 65 has, at the end portion 65b,
The base 61 is rotatably supported by a part of the base 61, and the other end thereof is supported by a support shaft 66, and a stapler gear 67 shown in FIG.
, The crank arm 65 is fitted inside, and when the stapler gear 67 makes one rotation, the crank arm 65 also becomes a support shaft 66.
Rotate around.

At this time, since the base 61 is fixed and the distance between the end portion 65b of the crank arm 65 and the support shaft 66 is constant, the upper unit 63 is centered on the hinge shaft 64 with respect to the base 61. Rotate. At this time, the body 68 rotatably supported by the hinge shaft 64 is also pushed from the upper unit 63 by the head portion 74 of the driver mounted on the body 68, and the arrow X in FIG. Rotate in the direction.

At the same time, the grooved cam portion 62b of the lower jaw 62 engaged with the caulking shaft portion 63b of the upper unit 63 also causes the lower jaw 62 to rotate about the rotation shaft 62a in the direction of arrow Y in FIG. The base 61 also has an anvil 69 for crimping the staples 75.
Is attached. A motor 70, which is a drive source of the stapler mechanism, is attached to the upper part of the upper unit 63, and the drive is transmitted to the stapler gear 67 via a motor gear 71.

Further, 72 is one rotation of the stapler (one stroke)
This is a one-revolution micro switch that detects one rotation, and when the stapler gear 67 makes one rotation, it makes one rotation at the same time and detects one rotation of the sensor cam 73. That is, when the stapler gear 67 makes one rotation, the stapler completes one driving step of the staple needle 75.

In this apparatus, as shown in FIG. 16, the above-mentioned stapler device 60 is provided on the near side (on the left side in the upstream direction in the sheet P conveying direction of FIG. 16), and
A stapler device 60 ′ in which the 60 is turned upside down is provided on the back side (on the right side in the upstream direction of the sheet P in FIG. 16), and the front stapler device 60 is, as shown in FIG.
While the staple needle 75 is driven in from above, the stapler device 60 'on the back side is configured to drive the staple needle 75 from below, as shown in FIG.

The configuration of the stapler device 60 'shown in FIG. 15 is the same as that of the stapler device 60 described above.
“′” Is given to each reference numeral of the stapler device 60 shown in FIG. 13 and the description thereof will be omitted.

With the above structure, when copying is performed on only one side of the sheet P, the stapler device 60 on the front side is used to
As shown in FIGS. 17 (a) and 17 (b), when the stapling needle 75 is driven from above in the sheet P discharged face up from the automatic double-sided copying machine B and copying is performed on both sides of the sheet P, Is the rear stapler device 60 ', and
As shown in (a) and (b), for the sheet P whose second surface is discharged face-up from the automatic double-sided copying machine B, that is, for the sheet P whose first surface is discharged face-down. Then, the staple 75 is driven from below.

At the time of this double-sided copying, as shown in FIG.
Since the first page of the original image is on the lower surface of the lowest sheet P discharged from the discharge port 39, considering the order of the sheets P after copying, when the discharged sheet P is taken out,
Since the first page is turned over so that the first page comes to the top, the stapling position is the upper left corner of the sheet P and the staple 75 is struck from the front side, which is a normal stapling mode.

Further, when the above-mentioned double-sided copy is output with the position of the image information read by the CCD 45 unchanged, the upper and lower sides are copied alternately in the vertical direction. The upper left binding or left side binding is not possible. Therefore, when copying from the one-sided original S to one side of the sheet P, as shown in FIG.
Although it may be bound as shown in (b), a single-sided or double-sided original S
18A, when copying from the sheet P to both sides of the sheet P, as shown in FIG. 18A, a mirror image process (a process of reversing the vertical direction) is performed before the image information once read is exposed on the photosensitive drum 36.
Therefore, it is necessary to rotate the image information by 180 °.

By this rotation operation of the image information, the sheet P, the first side of which is discharged face down during double-sided copying, is stapled at the entrance side of the finishing device C, and is sorted and discharged onto the discharge tray of the finishing device C. It is possible to complete the normal finishing in which the stack of sheets P is turned upside down, conforming to the order of the documents S, and stapled to the left side.

Note that, as shown in FIG. 19, the same applies to a configuration in which the document surface of the document S is placed on the feeding tray 1 with the document surface facing downward, and the document surface of the document S faces downward in page order or reverse page order. The sheet feeding operation may be performed by setting the sheet feeding tray 1 on the feeding tray 1 and appropriately selecting the upper side feeding or the lower side feeding, and selecting the feeding operation from the younger side of the page of the document S or the opposite side.

[0066]

Since the present invention has the above-described structure and operation, it is unnecessary to count the number of originals before starting the image forming operation on both sides of the sheet as in the conventional example described above. By omitting the operation, it is possible to greatly improve the productivity (processing efficiency) of double-sided image formation.

Further, in order to discharge the sheet onto the discharge tray in the order of the original reading process when processing the first page of the original, the sheet after passing through the image fixing unit is temporarily Rather than stocking them in an intermediate tray etc. and reversing them one by one in the main body of the device, and discharging them to the outside of the machine with the image formed on the back side of the sheet,
Since the image forming surface can be discharged to the outside of the apparatus via the double-sided path at any time by face-up to expose the image surface, the user can easily confirm the image formed image. Therefore, it is possible to prevent image formation errors.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view showing the overall configuration of an image processing apparatus according to the present invention.

FIG. 2 is an explanatory cross-sectional view showing a configuration of a document processing apparatus.

FIG. 3 is an explanatory plan view showing a configuration of a separation unit.

4A is an operation explanatory diagram showing a flow of originals in a copy mode in the original processing apparatus, and FIG. 4B is an operational explanatory diagram showing a flow of originals in a facsimile mode in the original processing apparatus.

FIG. 5 is a schematic view showing a document of the document processing apparatus and a state of an automatic double-sided copying apparatus in a standby state.

FIG. 6 is a schematic diagram showing a state in which the first original is read by the original processing apparatus and the image information of the first original is copied on the first side of the first sheet by the automatic double-sided copying apparatus. .

FIG. 7 is a schematic diagram showing a state in which a second original is read by the original processing apparatus and the first sheet is conveyed to a copying station of the automatic double-sided copying apparatus.

FIG. 8 is a diagram illustrating a third original is read by an original processing apparatus, a first sheet is conveyed to a copying station of an automatic double-sided copying apparatus, and a third sheet is placed on the first surface of the second sheet.
FIG. 7 is a schematic diagram showing a state in which image information of the first original is copied.

FIG. 9 is a diagram illustrating a fourth original read by the original processing apparatus, a second sheet conveyed to a copying station of an automatic double-sided copying apparatus, and a second sheet of the first sheet conveyed through the copying station. FIG. 6 is a schematic diagram showing a state in which image information of a second original is copied on the surface.

FIG. 10 is a diagram illustrating a case where the first sheet is discharged to the outside of the machine, and the second sheet of the second sheet conveyed to the copying station is printed on the second surface.
FIG. 7 is a schematic diagram showing a state in which image information of the first original is copied.

FIG. 11 is a schematic diagram showing a state in which a second sheet is stacked on the first sheet and discharged to the outside of the machine.

FIG. 12 is a cross-sectional explanatory diagram illustrating a configuration of a document processing apparatus that reads image information of a double-sided document.

FIG. 13 is a cross-sectional explanatory diagram illustrating the configuration of a stapler device on the front side that performs stapling.

FIG. 14 is a front view of the front stapler device.

FIG. 15 is an explanatory cross-sectional view showing the configuration of the stapler device on the back side.

FIG. 16 is a schematic plan view showing a state of stapling by the stapler device.

17A and 17B are diagrams showing a state of stapling at the time of one-sided copying.

18A and 18B are diagrams showing a state of stapling during double-sided copying.

FIG. 19 is a diagram showing a configuration of a document processing apparatus which is placed on a discharge tray with a document surface facing downward.

[Explanation of symbols]

1 ... Feed tray, 2 ... Swing guide, 3 ... Shutter, 4
... Half-moon roller, 5 ... Pre-separation guide, 6 ... Conveyor belt,
7, 8 ... Guide, 9 ... Conveying roller, 10 ... Original glass, 11
a, 11b ... Pinch roller, 12, 13 ... Guide, 14 ... Ejection roller, 15 ... Pinch roller, 16 ... Rotation center shaft, 17 ... Arm, 18 ... Ejection tray, 19 ... Original pressing plate, 20, 20a, 20
b ... Separation roller, 20a '... Flange, 21, 21a, 21b ...
Separation belt, 22 ... Drive pulley, 23 ... Belt support, 24 ...
Driven pulley, 25 ... Cam shaft, 26 ... Jump base, 27 ... Right discharge roller pair, 31 ... Cassette, 32 ... Pickup roller, 33
... Separation roller pair, 34 ... Conveying roller pair, 35 ... Registration roller pair, 36 ... Photosensitive drum, 37 ... Copying unit, 38 ... Fixing unit, 39 ... Discharge port, 40 ... Double-sided path, 41 ... Optical system, 42 ... Exposure lamp, 43 ... Mirror, 44 ... Lens, 45 ... CCD, 46 ... Memory device, 47 ... Laser beam scanner, 48 ... Developing device,
49, 50 ... Flapper, 51, 52 ... Conveying roller pair, 53 ... Ejection roller pair, 60, 60 '... Stapler device, 61, 61' ... Base,
62,62 '... Lower jaw, 62a, 62a' ... Rotating shaft, 62b, 62
b '... Groove cam part, 63, 63' ... Upper unit, 63b, 63b '
... Caulking shaft part, 64, 64 '... Hinge shaft, 65, 65' ... Crank arm, 65b, 65b '... End part, 66, 66' ... Support shaft, 67,
67 '... Stapler gear, 68,68' ... Body, 69,69 '...
Anvil, 70, 70 '... Motor, 71, 71' ... Motor gear,
72, 72 '... One-turn micro switch, 73, 73' ... Sensor cam, 74, 74 '... Head part, 75 ... Staple needle, A ... Original feeding device, B ... Automatic duplex copying device, C ... Finishing device, D ... Double-sided path, E, F ... Reading means, P, P ₁ ,
P ₂ ... sheet, S, S ₁ ~S ₄ ... manuscript

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G03G 15/00 107 G03G 15/00 107 510 510 534 534 21/00 370 21/00 370 H04N 1 / 00 108 H04N 1/00 108M

Claims (7)

[Claims] 1. An original processing apparatus capable of selectively separating and feeding a plurality of originals stacked on an original placing means from both the uppermost original and the lowermost original, and image formation on both sides of the sheet. In an image processing apparatus having a possible automatic double-sided image forming apparatus, when the image is formed on only one side of the sheet, the feeding from the lowest original placed on the original placing means is selected, and both sides of the sheet are selected. The image processing apparatus is characterized in that, when an image is formed on the sheet, the feeding from the uppermost original placed on the original placing means can be selected. 2. When forming an image on both sides of a sheet,
The image processing apparatus according to claim 1, wherein the automatic double-sided image forming apparatus is configured to sequentially convey the sheet after the single-sided image formation to another double-sided path for the single-sided image formation. 3. A memory device for storing image information to be recorded on the maximum amount of sheets that can be accommodated on the double-sided path until the sheet returns to the image forming position from the image forming position for double-sided image formation. The image processing apparatus according to claim 2, further comprising: 4. The image processing apparatus according to claim 2, wherein the document processing apparatus has a plurality of single-sided reading configurations and is capable of simultaneously reading both sides by conveying the original once. 5. A stapler device capable of stapling a sheet discharged from the automatic double-sided image forming apparatus from both front and back sides thereof.
An image processing apparatus according to the item. 6. A conversion device for storing image information of an original read by a CCD in a memory device and exposing the information by rotating the information on an electrophotographic photosensitive drum. The image processing device described. 7. An original processing device capable of selectively separating and feeding a plurality of originals stacked on an original placing means from both the uppermost original and the lowermost original, and image formation on both sides of the sheet. In an image processing apparatus having a possible automatic double-sided image forming apparatus, when an image is formed on only one side of a sheet, the original placed on the original placing means is selected to be fed in reverse page order, An image processing apparatus, characterized in that, when images are formed on both sides, it is possible to select the feeding of a document placed on the document placing means in page order.