JP2009029586A - Sheet laminator, image forming apparatus, and sheet laminating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet laminator and an image forming apparatus, capable of carrying a first sheet and a second sheet in such a way as to be capable of skewing so that both sheets meet each other to be bonded at a skewed position, while they are prevented from being bonded to each other at an undesired timing. <P>SOLUTION: On carrying upstream side of a bonding section where the first sheet and the second sheet to be bonded to each other by a bonding means converge in the middle of a carrying path and bonded together, a direction regulation means is provided to be abutted on either the first sheet or the second sheet on the opposite side to the surface to be bonded almost up to the bonding section for regulating the advance direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet material adhering apparatus and a sheet material adhering method for adhering sheet materials to each other, and an image forming apparatus including such a sheet material adhering apparatus.

Currently, there are various types of sheet products formed by adhering sheet materials. For example, a transparent sheet formed with an image on one side by an electrophotographic image forming apparatus and a white paper are used to display the image. There is an image recording sheet stuck so as to be sandwiched.
This is an extremely effective technical means for easily obtaining gloss and texture close to photographic image quality using an electrophotographic image forming apparatus. Conventionally, a sticking means for obtaining this image recording sheet. For example, an adhesive such as spray glue is sprayed on the image surface side of the transparent sheet, and the transparent sheet and the white paper are glued (for example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 3-50586

As described above, when the sheet materials are adhered to each other, a problem is that air bubbles enter between the sheet materials. In particular, in the case of the image recording sheet as described above, if even a very small bubble enters even a small amount, naturally, that portion is irregularly reflected. In some cases, the sheet surface appears to be dusty, and there is a concern that the image may be messed up.
The above-mentioned Patent Document 1 is based on the premise that no bubbles enter between the sheet material. However, as a practical problem, regardless of whether the work is manual or mechanical, when sticking sheets together, irregularities on the surface of the adhesive layer and sheet blurring, regardless of the size of the bubbles There is a problem that air bubbles easily enter between the sheet material due to the bonding angle and the like.
Therefore, the present invention has been made in view of such a situation, and an object thereof is to provide a sheet material sticking apparatus and an image forming apparatus that can solve the above problems.

In order to solve the above-mentioned problem, the invention according to claim 1 is the sheet material sticking apparatus, wherein the first sheet material and the second sheet material having the pressure-sensitive adhesive layer are conveyed so as to be obliquely crossed. An adhering means for adhering one sheet material and the second sheet material at a required adhering angle; and a joining portion where the first sheet material and the second sheet material merge in the conveyance path and are bonded to each other. Direction regulation means disposed on the upstream side of conveyance and configured to abut the second sheet material from the side opposite to the bonding surface to the vicinity of the joint and regulate the traveling direction. .
The invention according to claim 2 is the sheet material sticking apparatus according to claim 1, wherein either one of the first sheet material or the second sheet material is formed of a transparent sheet, and the other is an opaque sheet. An image is formed on the first sheet material, and the first sheet material and the second sheet material are attached so as to sandwich the image.
The invention according to claim 3 is the sheet material sticking apparatus according to claim 1 or 2, wherein the direction regulating means has one or more guide members positioned so as to contact the second sheet material. In addition, the guide member is retracted from the direction regulating operation position to the retracted position.

According to a fourth aspect of the present invention, in the sheet material sticking apparatus according to the third aspect, the guide member is urged by the urging means from the retracted position to the operating position, and the urging force is applied to the guide member. It is larger than the repulsive force by the bending force of the said 2nd sheet material which a member presses, and is smaller than the repulsive force resulting from the sheet | seat pulling force of the press roller which forms the said joining part.
According to a fifth aspect of the present invention, in the sheet material sticking apparatus according to the third aspect, the guide member is made of an elastic body, and the base end side is fixed and the front end abuts against the second sheet material. The biasing force due to the elastic force of the guide member is larger than the repulsive force due to the bending force of the second sheet material to be pressed, and smaller than the repulsive force due to the sheet pulling force of the pressure roller. And
Moreover, invention of Claim 6 is a sheet | seat material sticking apparatus of any one of Claims 1 thru | or 5, WHEREIN: On the conveyance upstream of the said joining part, a said 1st sheet material and a said 2nd sheet material of Detection means for detecting each of them independently is provided.
According to a seventh aspect of the present invention, an image forming apparatus includes the sheet material sticking apparatus according to any one of the first to sixth aspects. Further, the invention of claim 8 is characterized in that, in the image forming apparatus of claim 7, a small particle size polymerized toner is used as the toner.
According to a ninth aspect of the present invention, the first sheet material and the second sheet material provided with the pressure-sensitive adhesive layer are conveyed so as to be obliquely crossed, and the first sheet material and the second sheet material are adhered to each other as required. A sheet material adhering method for adhering at an angle, wherein the second sheet material is contacted from the side opposite to the adhesive surface to the vicinity of the joining portion to restrict the traveling direction.

According to the present invention, when the first sheet material and the second sheet material provided with the pressure-sensitive adhesive layer are conveyed so as to be obliquely crossed, and the two sheet materials cross and adhere at a position where the two sheet materials cross obliquely. In addition, the second sheet material is abutted from the opposite side to the bonding surface to the vicinity of the joining portion to regulate the posture, so that the sheet material is bonded at an unintended timing between the first sheet material and the second sheet material. It is possible to provide a sheet material sticking apparatus that can prevent the sticking and obtain a good sticking result.
In particular, when used in an electrophotographic image forming apparatus, an image formed by the apparatus (very preferably formed using a small particle size polymerized toner) is sandwiched between a transparent sheet and an opaque sheet such as white paper. To provide an image forming apparatus capable of easily and reliably forming a glossy and textured image by suppressing the formation of bubbles between sheet materials when obtaining an image recording sheet adhered in this manner it can.

Hereinafter, embodiments of a sheet material sticking apparatus and an image forming apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of the image forming apparatus, FIG. 2 is a diagram showing a schematic configuration of a photoconductor unit, and FIG. 3 is a configuration diagram of a sheet material sticking apparatus according to the present invention. As shown in FIG. 1, the sheet material sticking apparatus according to the present embodiment shown in FIG. 3 exemplifies a sheet attached to an electrophotographic image forming apparatus (corresponding to full color). First, an outline of the image forming apparatus will be described before the sheet material sticking apparatus according to the present embodiment is described in detail.
As shown in FIG. 1, the image forming apparatus according to this embodiment includes four image forming units 1Y for forming images of each color of yellow (Y), cyan (C), magenta (M), and black (K). 1C, 1M, 1K. Note that the color order of Y, C, M, and K is not limited to that in FIG.
Each of the image forming units 1Y, 1C, 1M, and 1K uniformly charges the surface of the photosensitive drum 11Y, 11C, 11M, and 11K as an image carrier and an enlarged view of FIG. The toner remaining on the surface of the photosensitive drum after the toner image on the surface of the photosensitive drum is transferred to the transfer conveyance belt 60 by the charging means such as the charging roller 14, the developing means 10 and the primary transfer unit 6 is removed from the surface of the photosensitive drum. And a cleaning means 15 for performing the above operation. The arrangement of the image forming units 1Y, 1C, 1M, and 1K is set so that the rotation axes of the photosensitive drums are parallel to each other and arranged at a predetermined pitch in the moving direction of the first sheet material. ing. A transparent sheet (non-transparent medium) that can be used as the first sheet material will be described later.

Below the image forming units 1Y, 1C, 1M, and 1K, a light source, a polygon mirror, an f-θ lens, a reflecting mirror, and the like are provided, and on the surface of each of the photosensitive drums 11Y, 11C, 11M, and 11K based on the image data. An optical writing unit 3 that irradiates while scanning with laser light is disposed, and a primary transfer as a belt driving device having a transfer conveyance belt 60 that conveys the toner images of the respective image forming units so as to be superimposed and transferred thereon. Unit 6 is arranged. A cleaning device 85 including a brush roller and a cleaning blade is disposed on the outer peripheral surface of the transfer / conveying belt 60 so as to come into contact therewith. The cleaning device 85 removes foreign matters such as toner adhering to the transfer conveyance belt 60.
On the right side of the primary transfer unit 6, a first sheet material (non-transparent medium) such as a transparent sheet on which the toner image formed by the image forming units 1 Y, 1 C, 1 M, and 1 K and transferred to the transfer conveyance belt 60 is used as transfer paper. ) A secondary transfer unit 7 for transferring an image to 100 is disposed, and a belt fixing type fixing unit 8 is provided above the secondary transfer unit 7. In the lower part of the image forming apparatus, paper feed cassettes 4a and 4b on which the first sheet material 100 is placed are provided. Further, a manual feed tray 4c for manually feeding paper from the side of the image forming apparatus is provided. In addition, toner replenishing containers 5Y, 5C, 5M, and 5K are provided, and a waste toner bottle and a power supply unit (not shown) are also provided.

The developing devices 10Y, 10C, 10M, and 10K as developing means have the same configuration, and are two-component developing type developing devices that use a carrier and toner that differ only in the color of the toner used. And a developer composed of a magnetic carrier.
As shown in FIG. 2, the developing devices 10Y, 10C, 10M, and 10K include a developing roller 12 that faces the photosensitive drum 11, a screw 13 that conveys and stirs the developer, a toner concentration sensor, and the like. The developing roller 12 includes an outer rotatable sleeve and a magnet fixed on the inner side. The developing roller 12 holds toner together with a magnetic carrier on the surface of the sleeve that is rotated by the magnetic force of the magnet. The electrostatic latent images are formed into toner images by supplying toner to the electrostatic latent images corresponding to the respective colors formed on the surfaces of the drums 11Y, 11C, 11M, and 11K by electric field force. In accordance with the output of the toner density sensor, toner is supplied from the toner supply device.
In the image forming apparatus according to the present embodiment, as shown in FIG. 2, each of the photosensitive units 2Y, 2C, 2M, and 2K includes a developing device 10, a charging roller 14, and a cleaning device that are attached to the outer periphery of the photosensitive drum 11. The device 15 is integrally formed with the photosensitive drum 11 to form a cartridge. For this reason, each of the photoreceptor units 2Y, 2C, 2M, and 2K is detached from the image forming apparatus main body so that repair and replacement can be easily performed. Such a process cartridge of each of the photoreceptor units 2Y, 2C, 2M, and 2K does not need to be a process cartridge in which the photoreceptor drum 11, the developing device 10, the charging roller 14, and the cleaning device 15 are integrated. If necessary, a cartridge in which two types of devices such as the photosensitive drum 11 and the developing device 10 or the charging roller 14 are integrated may be used.

A case where a toner image is formed on the first sheet material 100 (transparent sheet) in order to form an image with a photographic quality by this image forming apparatus will be described. In the present embodiment, as will be described later, in this case, the toner image formed on the first sheet material 100 is an electrostatic latent image formed on the photosensitive drum 11 by the optical writing unit 3. A mirror image is formed by selecting and setting the writing unit 3 in the mirror image mode.
First, a predetermined voltage is applied to the charging roller 14 from a power source (not shown) to charge the surface of the opposing photosensitive drum 11. The surface of the photosensitive drum 11 charged to a predetermined potential is subsequently scanned with laser light based on the image data by the optical writing unit 3 to write an electrostatic latent image. When the surface of the photosensitive drum 11 carrying the electrostatic latent image reaches the developing device 10, toner is supplied to the electrostatic latent image on the surface of the photosensitive drum 11 by the developing roller 12 arranged to face the photosensitive drum 11. A toner image is formed. The above operation is performed at a predetermined timing in the same manner for all of the photosensitive units 2Y, 2C, 2M, and 2K, and toner images of predetermined colors are formed on the surfaces of the photosensitive drums 11Y, 11C, 11M, and 11K, respectively. .
When it is desired to obtain a photographic image recording sheet, the first sheet material 100 on which the mirror image 100a is formed passes through the conveying roller pair 19 and the switching claw 18, and the three downstream conveying roller pairs 26, 27 and 28, and conveyed to the sheet material sticking device 9. In the sheet material sticking device 9, a second sheet material 91 made of a non-transparent medium such as white paper having an adhesive layer on one surface, a mirror image 100a formed on one surface of the first sheet material 100, and a second sheet material The adhesive layer 91b 91 is opposed to each other (see FIGS. 4 and 5) to create a sheet-like body having a photo-like image with high gloss and texture.

The first sheet material 100 is conveyed from any of the paper feed cassettes 4 a and 4 b or the manual feed tray 4 c and stops once when it reaches the registration roller 4. The toner images on the photosensitive drums 11 are sequentially transferred onto the transfer conveyance belt 60 at the image forming operation timing of the photosensitive units 2Y, 2C, 2M, and 2K. The toner image is transferred from a primary transfer roller 67Y, 67C, 67M, 67K, which is disposed opposite to each of the photosensitive drums 11Y, 11C, 11M, 11K with the transfer conveyance belt 60 interposed therebetween, from a power source (not shown). This is done by applying a voltage having a polarity opposite to that of the toner above.
Then, the toner image that has passed through the position facing the photosensitive drum 11K and overlaid with the four color toner images is transferred onto the first sheet material 100 fed by the registration roller 17 by the secondary transfer unit 7. The The first sheet material 100 is subsequently conveyed to the fixing unit 8 where the image is fixed by receiving heat and pressure.

  The image forming apparatus according to the present embodiment can print a desired image on a normal recording sheet made of paper or the like in addition to the first sheet material 100 made of a transparent sheet material. The normal mode can be printed on a normal sheet. When this standard mode is selected, the recording paper fixed by the fixing unit 8 and transported by operating the switching claw 18 is fed to the paper discharge roller 20 by the pair of transport rollers 19 to the paper discharge tray 21. The paper is ejected. The image forming apparatus also includes a double-sided printing mechanism. A sheet material such as a recording sheet that has passed through the fixing unit 8 is switched by a switching claw 22 and is transported to a reversing roller pair 23, and is temporarily stopped. Thereafter, the sheet is reversely fed by the reverse roller pair 23, and the conveyance path is conveyed to the duplex printing conveyance path 25 by switching the switching claw 24, and is fed again to the registration roller 17. The sheet material fed to the registration roller 17 is turned upside down and the toner image is transferred by the secondary transfer unit 7, fixed by the fixing unit 8, and fed to the conveying roller pair 19.

Next, an embodiment of a sheet material sticking apparatus according to the present invention will be described with reference to the drawings. In the sheet material adhering apparatus 9 according to the present embodiment shown in FIG. 3, the second sheet is a non-transparent medium in which white paper is used as a base material 91a and an adhesive layer 91b is formed on one surface of the base material 91a. The sheet material S on which the release paper 92 is placed on the material 91 and the pressure-sensitive adhesive layer 91b is used (see FIGS. 4 and 5).
The second sheet material 91 is supported by the support shaft 90 of the sheet material sticking apparatus 9 in a state of being wound into a roll shape while being cut with a predetermined width together with the release paper 92 that is a mount. The sheet material S drawn from the roll-shaped sheet material S is separated into the second sheet material 91 and the release paper 92 by the separation plate 93, and the release paper 92 is taken up by the take-up shaft 94 via the roller 96. It is done. In this way, when the release paper 92 is wound on the winding shaft 94, the leading end 911 of the second sheet material 91 is fed out in a direction B ′ that is oblique to the conveying direction A ′ of the first sheet material 100. It has become.
The second sheet material 91 fed out in this way has a conveyance direction that intersects the conveyance path of the first sheet material 100 conveyed by the conveyance roller 97, and is a guide member 110 (direction regulating means described later). The leading end portion 911 of the second sheet material 91, whose conveyance direction (traveling direction) is regulated by FIGS. 11 to 15), is direction-regulated (passage posture regulation) to a required angle (angle with respect to the first sheet material 100). The first sheet material 100 and the distal end portion 911 of the second sheet material 91 are brought into cross contact with the distal end portion 101 of the first sheet material 100 (intersection portion 103) and the adhesive layer 91b of the second sheet material 91 is used. Are adhered to the pressure rollers 95a and 95b in the direction of extension of the conveyance path of the first sheet material 100, and the first sheet material 100 and the second sheet material 91 are conveyed by the pressure rollers 95a and 95b. It is securely adhered to the piece. Thereafter, the first sheet material 100 and the second sheet material 91 are adhered to one sheet-like body and conveyed downward by the conveying roller 98, and the leading end of the sheet-like body is positioned by a positioning member (not shown). It is cut into a predetermined shape by the cutters 99 a and 99 b and stored in the tray 102. Note that the sheet-like body cut into a predetermined shape can be discharged out of the apparatus without being stored in the tray 102.

In the present embodiment, as shown in FIG. 3, the first sheet material 100 and the second sheet material 91 have first detection means (of the conveyed sheet material) on the upstream side of the joining portion 103. Sensors 111 and 112 capable of detecting the front end portion 101 of the sheet material 100 and the front end portion 911 of the second sheet material 91 are provided, and the front end portion 101 and the second second end of the first sheet material 100 are provided by these sensors 111 and 112, respectively. The second sheet material 91 and the first sheet material 100 are controlled by detecting the front end portion 911 of the sheet material 91 and controlling the front end portion 101 of the first sheet material 100 and the front end portions 911 of the second sheet material to coincide with each other. It is designed to be transported, and it is possible to finely adjust the tip positions of the two.
As described above, when the first sheet material 100 and the second sheet material 91 are pressed and adhered by the pressure rollers 95a and 95b, there is a concern that bubbles are formed between the sheet materials in the conventional apparatus. 4 and 5 schematically show cross-sectional views in the case where there is a bubble and in the case where there is no bubble, respectively. When bubbles enter, the light from the transparent medium is refracted into the bubbles, and the refracted light appears to shine as irregular reflection, so the uniformity of the white part is disturbed.

Here, the inventors have already determined that air bubbles are likely to be formed between the first sheet material 100 and the second sheet material 91 depending on the bonding angle θ between the first sheet material 100 and the second sheet material 91. Has been. I will touch briefly on this. 6 and 7 show this relationship. FIG. 6 shows a case where the bonding angle θ is as small as 10 degrees or less, and FIG. 7 shows a case where the bonding angle θ is as large as 30 degrees or more.
As is apparent from FIG. 6, when the bonding angle is small, the joining portion 103 is positioned in front of the pressure rollers 95a and 95b, and the mirror image 100a of the first sheet material 100 and the adhesive layer of the second sheet material 91. Air bubbles 104 are formed between the air bubbles 91b and the air bubbles 104 remain without disappearing even if they are pressed and adhered by the pressure rollers 95a and 95b. As described above, when the bubble 104 is formed between the mirror image 100a of the first sheet material 100 and the adhesive layer 91b of the second sheet material 91, as shown in FIG. Since the light from the sheet material 100 is refracted in the bubbles 104 and the refracted light appears to shine as irregular reflection, the uniformity of the white portion is disturbed and the gloss and texture of the image are impaired.

  On the other hand, as shown in FIG. 7, when the bonding angle θ is as large as 30 degrees or more, the joining portion 103 is in the vicinity of the pressure rollers 95 a and 95 b, and the mirror image 100 a and the second sheet material of the first sheet material 100. The formation of bubbles 104 between the adhesive layer 91b 91 and the adhesive layer 91b is suppressed. As a result, as shown in FIG. 5, the uniformity of the white portion of the base material 91a without the toner image 100a is maintained, and an image with excellent gloss and texture can be obtained. The bonding angle θ at which the formation of such bubbles 104 is suppressed is preferably 30 degrees or more and less than 90 degrees.

In the present embodiment, in order to control such a bonding angle θ at least in the vicinity of the joining portion, as shown in the enlarged cross-sectional views of the main portions of FIGS. It is. That is, the position of the second sheet material 91 is regulated so as to extend from the position where the release sheet of the second sheet material 91 is separated to the joining portion (sticking position) 103 with the first sheet material 100. Therefore, a guide member 110 is provided as a sheet direction regulating means. The guide member 110 can be formed as a single plate or two or more strips.
The guide member 110 is arranged on the outer side (opposite to the sticking surface) after the release sheet is separated from the second sheet material 91 that travels in a substantially straight or slightly curved conveyance path from the upstream side. Side) to extend in a direction intersecting with the conveyance path up to that point, and the second sheet material 91 hits the guide member 110 from its tip and bends along the guide member 110 to advance along the desired direction. The angle is maintained and the first sheet material 100 is integrated with the first sheet material 100 to further advance in the conveying direction.
In this way, the second sheet material 91 that is conveyed with the guide member 110 disposed is brought into contact with the front end from the front end and joined with the first sheet material 100 while being advanced along the guide member 110, and is guided to the pressure roller section. Bond the sheet material. The guide members may be appropriately divided and distributed in the transport direction.

  The state when the non-transparent medium is actually bonded will be described with reference to the enlarged cross-sectional view of the main part in the vicinity of the bonding site shown in FIGS. However, in FIG. 8 to FIG. 10 for comparison with the embodiment, a state at the time of sticking in the conventional configuration without the guide member 110 is described unlike the present embodiment. If there is no guide member in this way, the second sheet material 91 that has left the separation plate 93 is in a free state that is not restricted, and therefore bends irregularly within the range of the arrow C ′ in FIG. The assumed bonding angle θ1 is θ3 ≦ θ1 ≦ θ2, and the bonding angle varies. As a result, as shown in FIG. 10, the sticking is unintended and wrinkles and bubbles 104 may be included. Maybe there.

Therefore, in this embodiment, as shown in FIG. 11, the guide member 110 as the direction regulating means is disposed on the upstream side of the joining portion, abuts against the second sheet material 91 from the side opposite to the adhesion side, and the conveyance direction Is forcibly changed so that the posture of the second sheet material 91 in this path region is regulated up to the vicinity of the joining portion (the traveling direction of the leading edge of the sheet material is regulated). By setting the mounting angle (θ4) of the guide member 110 to be equal to or larger than θ2, the relative angle is maintained at (θ4) even when the second sheet material 91 is advanced as shown in FIG. 11 (FIG. 12). The bonding angle (θ1 in FIG. 8) is θ4, so that a stable bonding angle is always obtained, and contact at an undesired position between the two media can be avoided as intended by the present invention.
At this time, if the guide member 110 is fixed at a fixed position and posture and does not move, the second sheet material (non-transparent medium) 91 is excessively bent when the pressure is applied by the pressure roller as shown in FIG. In addition, the two media contact each other before the tip reaches the pressure roller nip portion and applies pressure, so that small bubbles are likely to enter.
Therefore, as shown in FIG. 14, the guide member 110 may be configured to retreat (save) in the direction of arrow A by the pressure of the spring, for example. Since the guide member 110 of the embodiment shown in FIG. 14 is pressed by a spring (not shown), the leading end portions of both sheet materials reach the pressure roller portion through the joining portion 103, and a strong force (pressure roller) When a tensile force is generated, the guide member is retracted (retracted) so that it does not get in the way during crimping. With such a configuration, since pressure is applied in the direction of the arrow B at the pressure roller nip portion, it is possible to prevent the bubbles from being pushed out in the direction of the arrow C and sealed.

  In addition, the guide member 110 is formed of an elastic body having an appropriate elastic force, and, as shown in FIG. It is conceivable to adopt a configuration in which the tip end side retreats (retreats) in the direction of arrow D according to the progress of the sheet material by the elastic force of the member 110 itself. When a strong force (pressing roller pulling force) is generated as in the previous configuration, the guide member can be retracted (retracted) so that it does not get in the way during pressing. Even in such a configuration, since pressure is applied in the direction of arrow B at the pressure roller nip, it is possible to prevent bubbles from being pushed out in the direction of arrow C and enclosing the bubbles.

As described above, according to the present embodiment, the position of the non-transparent white medium (second sheet member) after the release paper is peeled is regulated, so that the medium is unintended between the two sheet materials. Gloss and texture, such as maintaining the uniformity of the white area where there is no toner image, because it prevents air bubbles from entering when the two sheet materials (medium) are bonded to each other and prevents air bubbles from entering. It is possible to easily and reliably create a target sheet material having a high image.
If the guide member of the direction regulating means can be retracted to the retracted position, the two media come into contact with each other while being crimped by the pressure roller, so that it is possible to achieve good media adhesion without bubbles. The guide member is composed of an elastic body, and the base end side is fixed and the sheet material is pressed at the free end portion of the distal end. Good media adhesion without bubbles can be realized.
In addition, when the sensors 111 and 112 are disposed on the upstream side of the joining portion 103 of the first sheet material 100 and the second sheet material 91, an abnormal operation can be detected, and the first sheet material 100 and the second sheet are detected. By detecting the leading end portions 101 and 911 of the material 91 and controlling the conveyance speed, it is possible to finely adjust the timing so that the leading end portions of these sheet materials are matched and bonded.

In the above-described embodiment, a transparent sheet is used as the first sheet material 100. However, as shown in plan views in FIGS. 16, 17, and 18, only a part of the sheet material is used. May be a sheet material in which the transparent part 100b is used and the other part 100c is an opaque part. When using a sheet material having such a partially opaque portion 100c, as shown in FIGS. 19 and 20, the original image (see FIG. 19) is transferred to the transparent portion 100b of the sheet material 100 as a mirror image 100a. Can be prepared using the above-described image forming apparatus (see FIG. 20), and white paper having an adhesive layer can be laminated on the sheet material sticking apparatus of the image forming apparatus.
Moreover, in the said embodiment, although what formed the transparent adhesive layer 91b on the base material 91a which consists of white paper was used as the 2nd sheet | seat material 91, it is not restricted to this, Transparent base is used as the base material 91a. A non-transparent adhesive monk may be formed by using a material and mixing a white pigment or the like in the adhesive layer.
Further, as the toner used for image formation in the image forming apparatus in the present embodiment, it is preferable to use a small particle size polymerized toner, particularly a toner having a particle size of 6 μm or less. By using such a small particle size polymerized toner, the photographic image quality can be further improved and the texture can be enhanced.
The sheet material sticking method according to the present invention, as described in the above-described embodiment, conveys the first sheet material and the second sheet material provided with the pressure-sensitive adhesive layer so as to be able to cross each other. Is a sheet material adhering method for adhering the second sheet material with a required adhering angle, and abuts the second sheet material to the vicinity of the joint from the side opposite to the adhesive surface to regulate the posture. It is characterized by.

As mentioned above, although the sheet | seat material sticking apparatus and image forming apparatus concerning this Embodiment were demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is limited to it However, various modifications can be made without departing from the scope of the invention.
In the embodiment, a mirror image P is formed on a transparent recording medium (transparent sheet) as the second sheet material 91, and the transparent sheet and, for example, a white non-transparent medium (opaque sheet) as the first sheet material 100 are used. However, the image P may be formed on a non-transparent medium, and the opaque sheet and the transparent sheet may be adhered. In the embodiment, the sheet material adhering device 9 linked to the image forming apparatus is exemplified, but the present invention is not limited to outputting these image recording sheets, and may be applied as long as the sheets are adhered to each other. Is possible.

It is sectional drawing which shows schematic structure of the state which connected the image forming apparatus and sheet material sticking apparatus concerning this Embodiment. FIG. 2 is a cross-sectional view illustrating a schematic configuration of a photoreceptor unit used in the image forming apparatus illustrated in FIG. 1. It is sectional drawing which shows schematic structure of one Embodiment of the sheet material sticking apparatus concerning this invention used with the image forming apparatus shown in FIG. It is sectional drawing which shows the reflective state of the light of the sheet | seat material on which the 1st sheet | seat material and the 2nd sheet | seat material were bonded together by the state which has a bubble. It is sectional drawing which shows the reflective state of the light of the sheet | seat material on which the 1st sheet | seat material and the 2nd sheet | seat material were pasted together in the state without a bubble. It is typical sectional drawing which shows the case where a bonding angle is small in the case of bonding a 1st sheet material and a 2nd sheet material with a pressurizing roller. It is typical sectional drawing which shows the case where the 1st sheet material and the 2nd sheet material are bonded together with a pressurizing roller, when the bonding angle is large. It is sectional drawing of the sticking site | part vicinity in the conventional sheet material sticking apparatus. It is sectional drawing of the sticking site | part vicinity in the conventional sheet material sticking apparatus. It is sectional drawing of the sticking site | part vicinity in the conventional sheet material sticking apparatus. It is sectional drawing of the sticking site | part vicinity in the sheet material sticking apparatus of embodiment. Similarly, it is sectional drawing of the sticking site | part vicinity in embodiment apparatus. Similarly, it is sectional drawing of the sticking site | part vicinity in embodiment apparatus. Similarly, it is sectional drawing of the sticking site | part vicinity in embodiment apparatus. Similarly, it is sectional drawing of the sticking site | part vicinity in embodiment apparatus. It is a figure which shows the modification of the 1st sheet | seat material concerning this invention. It is a figure which shows the other modification of the 1st sheet | seat material concerning this invention. It is a figure which shows the 3rd modification of the 1st sheet | seat material concerning this invention. It is a top view which shows the original image concerning embodiment. FIG. 20 is a plan view of a first sheet material on which an image is formed based on the original image shown in FIG. 19.

Explanation of symbols

1Y, 1C, 1M, 1K Image forming unit, 2Y, 2C, 2M, 2K Photosensitive unit, 3 Optical writing unit, 6 Primary transfer unit, 7 Secondary transfer unit, 8 Fixing unit, 9 Sheet material bonding device, 10Y 10C, 10M, 10K Developing device, 11Y, 11C, 11M, 11K Photosensitive drum, 14 Charging roller, 15 Cleaning means, 85 Cleaning device, 91 Second sheet material, 91a Base material, 91b Adhesive layer, 92 Release paper , 93 Separator plate, 94 Release paper take-up shaft, 95a, 95b Pressure roller, 100 First sheet material (non-transparent medium), 100a Image, 101 (first sheet material) tip, 911 (second sheet material) tip , 103 Intersection, 104 Air bubbles, 110 Guide member (direction regulating means), 111, 112 Sensor Detection means)

Claims (9)

An adhering means for conveying the first sheet material and the second sheet material provided with the pressure-sensitive adhesive layer in an oblique manner so as to bond the first sheet material and the second sheet material with a required adhering angle;
The first sheet material and the second sheet material are arranged on the conveyance upstream side of the joining portion where the first sheet material and the second sheet material merge in the conveyance path and are bonded to each other, and the second sheet material is bonded to the vicinity of the joint portion. And a direction regulating means for regulating the traveling direction by contacting from the opposite side.   Either one of the first sheet material or the second sheet material is composed of a transparent sheet, and the other is composed of an opaque sheet so that an image is formed on the first sheet material, and the image is sandwiched between them. The sheet material sticking apparatus according to claim 1, wherein the first sheet material and the second sheet material are stuck.   3. The sheet material sticking apparatus according to claim 1, wherein the direction regulating unit includes one or more guide members positioned so as to abut on the second sheet material, and the guide members are oriented in the direction. A sheet material sticking apparatus, wherein the sheet material is retracted from a restricting operation position to a retracted position. In the sheet material sticking device according to claim 3, the guide member is urged by the urging means from the retracted position to the operating position,
The biasing force is larger than the repulsive force due to the bending force of the second sheet material pressed by the guide member, and smaller than the repulsive force due to the sheet pulling force of the pressure roller forming the joining portion. Characteristic sheet material sticking device.   The sheet material sticking apparatus according to claim 3, wherein the guide member is formed of an elastic body, the base end side is fixed, and the distal end is a free end that comes into contact with the second sheet material, and the elastic force of the guide member The sheet material adhering apparatus according to claim 1, wherein the urging force due to the pressure is greater than a repulsive force caused by a bending force of the second sheet material to be pressed and smaller than a repulsive force caused by a sheet pulling force of the pressure roller. In the sheet | seat material sticking apparatus of any one of Claims 1 thru | or 5,
A sheet material sticking apparatus, comprising: a detection unit configured to independently detect each of the first sheet material and the second sheet material on the conveyance upstream side of the joining portion.   An image forming apparatus comprising the sheet material sticking apparatus according to claim 1.   8. The image forming apparatus according to claim 7, wherein a small particle size polymerization toner is used as the toner. A sheet material adhering method in which a first sheet material and a second sheet material provided with an adhesive layer are conveyed so as to be able to cross each other and the first sheet material and the second sheet material are bonded at a required adhering angle. Because
The sheet material adhering method, wherein the second sheet material is contacted from the side opposite to the adhesive surface to the vicinity of the joint portion to regulate the traveling direction.

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