JP2008169284A - Powder adhesive application method - Google Patents

Abstract

A method for producing a practical powder adhesive capable of being applied (transferred) by electrophotography and a method for applying the same are provided.
An adhesive 20 is formed in a solid coating pattern on an image with respect to an image portion (character "A" 38, outer frame 39) 40 of a surface A to which the adhesive 20 is applied. When the surface A and the surface B to which the adhesive 20 is not applied are bonded together, positions (broken line portions 41 ′, 42 ′) 43 ′ corresponding to the image portion (characters “123” 41, outer frame 42) 43 of the surface B The adhesive 20 is also formed on the surface A to be formed with a solid coating pattern. Then, the surface A, which has no image on both the surface A and the surface B, is formed with a coating pattern in which the adhesive 20 is thinned out on the surface A to be a portion 45 where the blank paper portion and the blank paper portion are bonded. As the thinning pattern, various thinning patterns conceivable such as a lattice shape, a halftone dot shape, and the like are arbitrarily selected from the viewpoint of adhesive strength and consumption.
[Selection] Figure 7

Description

  The present invention relates to a method for applying a powder adhesive by development, transfer and fixing by an electrophotographic system.

  Conventionally, in order to transmit character information only to a specific individual, generally, the character description is in a sealed form so that the individual can confirm the character information only after opening.

  In recent years, personal information protection has become a strict question, and various business establishments, for example, personal information such as various personal data, gradebooks, salary statements, etc., are printed on the printed part of the written text. It is recorded and distributed in the form of envelopes or cards by bonding or crimping the peripheral edge of the printed part or the entire surface of the written text.

  Among these, postcard-sized cards are called crimped postcards and can be used at the same charge as regular postcards. Therefore, as a printing information concealment system that is highly convenient for information providers, advertising It is also widely used for advertising direct mail.

  In order to use such a printing information concealment system for crimping postcards, etc., secret information has conventionally been created by entrusting it to a specialized manufacturer or introducing an expensive crimping postcard or other manufacturing / printing device. .

  There are two methods for creating confidential information using a manufacturing / printing device such as a crimping postcard, such as a method of applying adhesive after information printing or a method of applying adhesive before information printing. The premise of creating a large amount of information is essential and expensive.

Further, such outsourcing to a manufacturer is not a preferable method for creating confidential information because there is a potential problem of leakage of personal information.
By the way, in recent years, along with the development of personal computers and printers, there has been proposed one that can easily create a crimp postcard even in a small unit so that it can be used by small-scale offices and individuals.

  For example, postcard paper with release paper pre-applied with a pressure sensitive adhesive is on the market. In this method, after printing predetermined character information or the like on the printing surface inside the two-fold, the pressure-sensitive adhesive portion is crimped to complete a postcard for postage.

  For example, a set of adhesive film and postcard paper is sold. In this method, after printing predetermined character information or the like on the printing surface inside the double fold, the adhesive film is pressure-bonded with the adhesive film sandwiched inside, so that a postcard for posting can be created.

  However, this is inevitable, and the handling is cumbersome, and it is better to personally create several crimped postcards, but it is cheap, quick, and responsive to demand in a certain number of units. It can not be created with.

  Therefore, a toner-like adhesive composed of microcapsules containing an adhesive is transferred onto the surface of the substrate by electrostatic printing and flash-fixed. At the time of adhesion, the microcapsules are destroyed by pressure and the adhesive in the capsule is leached. In this way, a proposal has been made that it is possible to easily create a pressure-bonded postcard. This proposal also suggests a pulverized toner obtained by melting, kneading, and pulverizing an adhesive. (For example, refer to Patent Document 1.)

  In addition, the pressure bonding substance is put into a replacement printing cartridge for an office printer or a copying machine, and the pressure bonding substance is applied to a government postcard or envelope by the same operation as the printing operation by the office printer or copying machine. After that, a proposal has been made that it can be applied to a dedicated crimping machine, and a single printer or copying machine can be used to reach the dedicated crimping machine. In addition, this proposal suggests that a crimping substance is applied to one side of a fold and one side of a center of a fold. (For example, see Patent Document 2.)

In addition, a method has been proposed in which a toner containing a heat-sensitive adhesive is used, and an image is created in a demand-ready manner by electrophotography. In this proposal, the softening temperature of the heat-sensitive adhesive is configured to be higher than the softening temperature of the binder resin of the toner for electrophotography, and the ratio of the heat-sensitive adhesive to the toner for electrophotography is 5 to 5. It has been proposed that the composition be 60% by weight and that the composition of the heat-sensitive adhesive contains at least one selected from the group consisting of a heat-adhesive resin, a hot melt, and waxes. (For example, refer to Patent Document 3.)
JP 09-104849 A (paragraphs 0005, 0014, FIG. 1, FIG. 3, FIG. 6) JP 2000-006553 A (summary, no figure) Japanese Patent Laying-Open No. 2004-126231 (paragraphs 0085 to 0087, not shown)

  However, although the technology of Patent Document 1 describes the configuration and composition of the microcapsule toner, the pulverized toner is merely suggested to the extent that it is conceived, and the specific composition, production method, There is no description about the usage, and this makes it possible for even those skilled in the art to produce useful pulverized toners and, of course, not even make prototypes.

  In addition, the technology of Patent Document 2 is to create a print information concealment document by a public postcard or envelope before being applied to a dedicated crimping machine, and it is convenient in that it must be applied to the dedicated crimping machine to complete for posting. It must be said that it is lacking in performance and economy and is far from being responsive to demand.

  In the technique of Patent Document 3, the softening temperature of the heat-sensitive adhesive is simply set higher than the softening temperature of the binder resin of the toner for the electrophotographic system. There is no explanation of prescription.

  By the way, as a method of creating a pressure-sensitive postcard that is responsive to demand, a powder adhesive that can be used by being housed in a toner cartridge of a small electrophotographic printer that can be used personally is specifically realized. It is considered that the powder adhesive may be applied to the paper surface on which variable information is printed (or printed, the same applies hereinafter) by the same printer by developing, transferring and fixing.

  However, if the adhesive is applied to the paper after printing using an electrophotographic printer, the powder adhesive must be applied as an adhesive unless it is of the same form as a normal toner ( Development, transfer, and fixing) are considered impossible.

  However, although the powder adhesive for toner-like pressure-adhesive postcards is suggested to the extent of conceiving in the above-mentioned patent documents, which are the conventional proposed technologies, the specific material formulation is also specific as described above. Neither usage is disclosed.

  Also, such a toner adhesive powder adhesive for postcards has not been distributed to the market to date. The pressure-sensitive adhesive for postcards in circulation is only liquid or adhesive sheet.

  Therefore, the present inventor decided to make a prototype of a toner-like adhesive (thermoplastic resin powder) on the premise that it can be applied using a printer, based on the suggestion of the conventional proposed technique. .

  The material formulation of the toner-like adhesive, which was prototyped on the assumption that it can be applied using a printer or copying machine, is about 95% polyester as a binder resin, about 2% LR147 as a charge control agent, and pp as a wax. Was about 2%.

  The above-mentioned material prescription is based on the idea that it satisfies both the requirements of a pressure-sensitive adhesive for postcards and that it can be applied with a printer (that is, it has powder properties similar to toner). Polyester is a binder resin material that is currently used mainly as a toner for printers.

  Next, these materials were mixed with a Henschel mixer FM20 manufactured by Mitsui Mine, and kneaded with a biaxial continuous kneader. Thereafter, the mixture was roughly crushed, pulverized, classified, and finally mixed with hydrophobic silica using a Henschel mixer to obtain a powder similar to a toner having a center particle size of 9 μm.

  This powder was developed on a photosensitive drum as a powder adhesive, transferred to the folding surface of a reciprocating postcard, fixed, taken out of paper, and pasted on a crimping machine. At this time, the setting temperature of the bonding roller to be bonded was set in four stages of 120 ° C., 130 ° C., 140 ° C., and 150 ° C., and the pressure-bonded postcard bonded at each set temperature was created.

  The use of a dedicated crimping machine as described above for pasting this postcard, and the temperature setting of the pasting roller includes a temperature higher than the melting temperature of the normal toner, suggesting that each of the conventional proposed techniques It is a response.

  And although not shown in particular, it decided to evaluate the crimping postcard produced for every said preset temperature.

  In this evaluation, the variable information printing toner was originally printed when the peel force (strength of the force when peeling the attached part of the crimping postcard) and the character offset (opening (peeling) the stuck part of the crimped postcard). It was determined whether or not it was good or bad by visual observation about the phenomenon that it was detached from the surface that had been removed and then transferred to the adhesive surface and adhered.

  As a result, in the adhesive prepared as described above, the adhesive peels off the printed information on the base in the temperature setting region (140 ° C., 150 ° C.) of the adhesive strength (= peeling force) to which the postcard sticks. It has been found that there is a problem that “character offset” occurs.

  In other words, with adhesives created within the range suggested by the prior art (adhesives whose softening temperature is higher than the softening temperature of the binder resin of the toner), variable information is printed with normal toner and then applied to the printing surface as a single adhesive. Or when a variable information image is formed with a toner containing a heat-sensitive adhesive, the toner fixed on the paper surface is re-melted by heating to realize the subsequent adhesion by the adhesive, A character offset occurs.

  This character offset phenomenon is caused by the fact that both the variable information printing toner softened and melted by thermocompression bonding and the adhesive are strongly bound together, and when the postcard is opened, the variable information printing toner is strongly pulled by the adhesive on the opposite surface. However, it is considered that this occurs when the adhesive force between the paper and the variable information printing toner exceeds the adhesive force, and the variable information printing toner is transferred to the opposite surface side.

  Further, if the adhesive force is too strong, there is a problem that even when the postcard is opened, even the postcard paper is torn. In the production of envelopes, medicine bags, general-purpose bags, etc., no matter how strong the adhesive force is, there is no problem. However, if the adhesive force is too weak, the adhesive surface will peel off naturally and it will not stand up to use. If this is a pressure-bonded postcard, it will be naturally opened in the middle of mailing, and will not be used in the production of a pressure-bonded printed material such as a pressure-bonded postcard.

  Therefore, it is necessary to produce a powder adhesive that has sufficient adhesive strength that does not cause spontaneous peeling in the production of crimped prints, and that has peelability that does not cause paper tearing or character offset. It turns out that some kind of ingenuity is necessary.

  An object of the present invention is to provide a practical method for producing a powder adhesive capable of being applied (transferred) by an electrophotographic method and a method for applying the same in view of the above-described conventional situation.

  The adhesive coating method of the present invention increases the amount of adhesive applied to the portion corresponding to the image portion sandwiched between the two surfaces when the two surfaces of the object to be crimped are crimped, and corresponds to the image portion. The adhesive is applied to the pressure-bonding surface of the object to be pressed so as to reduce the amount of the adhesive applied to the outside of the portion to be pressed.

  The adhesive corresponds to, for example, only one of the two surfaces to be crimped of the object to be crimped, the image portion of the surface to which the adhesive is applied, and the image portion of the surface to which the adhesive is not applied. It is applied only to the part and applied to the other part by thinning out. Also, for example, it corresponds to the part with the image of the surface where the adhesive is not applied when pasted with the part with the image of the surface where the adhesive is applied. When there is an overlapping part in the part to be applied, solid coating is applied only to one of the overlapping parts.

  In addition, the application of the adhesive is controlled based on the image recording data by, for example, the pressure-bonded printed material producing apparatus that has received the same image recording data from the host device as the image recording apparatus performed printing on the pressure-bonding object. In addition, for example, the portion where the host device should apply the adhesive and the application amount thereof are identified from the same image recording data obtained by causing the image recording apparatus to perform printing on the crimping object, and the identified above The part to which the adhesive is to be applied and the amount of the adhesive to be applied are transmitted to the pressure-bonded printed material manufacturing apparatus, and controlled by the pressure-bonded printed material manufacturing apparatus based on the contents of the transmission.

  In this adhesive application method, for example, the image portion and the blank paper portion are specified for each pixel to determine the adhesive application portion, and for example, the presence or absence of image data is detected for each predetermined pixel group. Thus, the image portion and the blank paper portion are separated for each pixel group, and the application portion of the adhesive is determined.

  In that case, whether to determine the application portion of the adhesive by specifying the image portion and the white paper portion for each pixel, or to determine the application portion of the adhesive by separating the image portion and the white paper portion for each pixel group, You may make it select according to input operation by a user.

  According to the present invention, since the application amount of the adhesive can be reduced to the minimum necessary according to the printing pattern, the economy is improved. In addition, since it is possible to arbitrarily select a region range for which the presence / absence of an image is to be determined, optimization is possible from two aspects of processing speed and economy according to print data, which is convenient.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
First, the material formulation of the toner-like powder adhesive and a specific production method will be described. This powder adhesive was developed as a powder adhesive that does not cause character transfer to the opposite surface when the secret information printing surface is peeled and opened after pressure bonding.

  First, 90% by mass or more of a hydrocarbon-based resin (copolymer of cycloolefin and ethylene) having a softening temperature of 110 ± 4 ° C. as a binder resin, 0.3 to 3% by mass of a charge control agent, and 1 to 9% by mass of wax. prepare.

  These are mixed with a mixer, the mixture is kneaded while applying temperature with a twin screw kneader, the kneaded product is cooled, and pulverized to about 2 mm with a mechanical pulverizer. Further pulverize to fine particles and classify to an appropriate particle size.

  Thereafter, the kneaded pulverized product was externally added with 0.1 to 5% by mass of silica fine particles (treated with a kneaded pulverized product) and surface-treated with silicon oil or alkyldisilazane, and the average particle size at a softening temperature of 106 ° C. A toner-like transparent powder adhesive as a second powder adhesive having a diameter (volume D50) of 9.0 μm is obtained.

(Embodiment 2)
FIG. 1 is a diagram schematically illustrating a configuration of a pressure-bonded printed material creating system according to a second embodiment. As shown in FIG. 1, the press-bonded printed material creation system includes a printing unit 1 and a post-printing processing unit 2. The printing unit 1 includes a computer 3 and an image forming apparatus 4. The internal configuration of the post-print processing unit 2 will be described later in detail.

  The computer 3 includes a main body 5, a liquid crystal display device 6 connected to the main body 5, and a keyboard 7. The main body 5 includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a hard disk (HD), and the like, although not particularly illustrated.

  The operator uses the computer 3 to create or process print data (destination zip code, address, contents of notification to the other party), and instruct the computer 3 to execute printing by the image forming apparatus 4 using the print data. To do. The computer 3 of the printing unit 1, the image forming apparatus 4, and the post-printing processing unit 2 are connected by a communication interface 8.

  The image forming apparatus 4 of the printing unit 1 is a normal electronic image forming apparatus using, for example, four color toners. The image forming apparatus 4 is connected to the personal computer 3 and is folded in half based on an instruction from the personal computer 3 ( The printing based on the above-described print data is performed on the sheet for the V-fold) pressure-bonded printed material and the sheet for the three-fold (Z-fold) pressure-bonded printed material.

  FIG. 2 is a diagram schematically illustrating an example of printing of a Z-fold pressure-bonded printed sheet printed by the image recording apparatus 4 described above. An arrow a indicates the sheet conveyance direction. As shown in the drawing, the sheet 9 for Z-fold pressure-bonded printed material is divided into three single surfaces, a surface A, a surface B, and a surface C, and the second surface is also composed of a surface D, a surface E, and a surface F. Divided into two planes.

  In the example shown in the figure, confidential information 11 such as “A” is printed on the surface A of the first surface, and confidential information 12 such as “123” is printed on the surface B. Further, on the surface C, a zip code 13, an address 14, an address 15 and the like are printed. Further, the second surface is also hidden in the figure, but the confidential information is printed on the surface E and the surface F, and the sender information is printed on the surface D.

(Embodiment 3)
Next, the configuration of the post-print processing unit 2 will be described as a third embodiment.
FIG. 3 is a block diagram illustrating a configuration of the post-printing processing unit 2. As shown in the figure, the post-print processing unit 2 is moved from the upstream side (right side in the figure) to the downstream side (left side in the figure) from the sheet supply unit 16, the crimped printed material preparation device 17, and the sheet storage unit 18. Become.

  The pressure-bonded printed material producing apparatus 17 includes a preliminary paper folding unit 19, an adhesive application unit 21, a hypothetical fixing unit / main fixing unit 22, a sheet folding unit 23, a shape adjusting unit 24, and a cutting / separating unit 25.

  FIG. 4 is a diagram illustrating the size of a sheet used for the pressure-bonded printed material in the pressure-bonded printed material manufacturing apparatus 17 described above. The figure shows an A3 size sheet 26. In this example, one end in the longitudinal direction of the sheet 26 is cut off in advance by a length portion 25a of 10.5 cm, and the remaining portion is used as the sheet 26b.

  Then, as shown in the figure, when cutting along the cutting line 27 and folding along the two folding lines 28 into three by mountain fold and valley fold, the length is 14.85 cm and the width is 10.5 cm, respectively. Two Z-fold pressure-bonded prints can be produced. The vertical and horizontal dimensions of the press-bonded printed material are within the allowable range of postcards approved by the Postal Service.

  In the pressure-bonded printed material manufacturing apparatus 17 shown in FIG. 3 of this example, the maximum size sheet that can be applied is an A3 size sheet, and the maximum sheet width that can be conveyed and processed is the lateral width of the A3 size sheet, that is, 29.7 cm. It is. A large number of sheets 26b shown in FIG. 4 are stored in the sheet supply unit 16 shown in FIG. The sheets 26b are supplied one by one to the pressure-bonded printed material producing apparatus 17 by a feeding device (not shown).

  5 (a) to 5 (d) and FIGS. 6 (a) to 6 (d) are a plan view, a perspective view, and a side view of the state of the sheet 26b in the order of the production process of the pressure-bonded printed material in the pressure-bonded printed material manufacturing apparatus 17 shown in FIG. It is a figure shown with sectional drawing etc.

  In FIGS. 5A to 5D and FIGS. 6A to 6D (also in FIG. 4), the conveyance direction of the sheet 26b in the press-bonded printed material production apparatus 17 is indicated by an arrow i. That is, the sheet 26b is completed as a Z-fold pressure-bonded printed material through processing of adhesive application including special intermediate steps, tri-folding, pressure bonding, cutting and separation while being conveyed in the direction of arrow i.

  Hereinafter, with reference to FIG. 3 to FIG. 6, a method for producing a pressure-bonded printed matter including a method for applying an adhesive for pressure-bonded printed matter in the pressure-bonded printed matter producing apparatus 17 of this example will be described.

  First, the sheet 26 b is fed from the sheet supply unit 16 to the spare paper folding unit 19. In this feeding, FIG. 5 (a) shows only one printed sheet printed in the direction of the arrow i in order to avoid the complexity shown in the figure. As shown, two sheets of the pressure-bonded printed material 26b that are still continuous with the cutting line 27 are conveyed in the longitudinal direction as indicated by an arrow i.

  In the preliminary paper folding portion 19, the sheet 26b is folded so that a part of the sheet (the portion of the C surface and the F surface on the front and back sides) is indicated by an arrow j, as shown in FIG. The sheet 26 b in which a part of the sheet is folded is conveyed to the adhesive application unit 21.

  The adhesive application unit 21 includes a powder adhesive storage unit 29 that stores a powder adhesive, a photosensitive drum 30 disposed near the lower end opening of the powder adhesive storage unit 29, and a photosensitive member. A recording head 31 provided close to the upper surface of the body drum 30, a developing roller 32 for developing the powder adhesive on the photosensitive drum 30, and a transfer roller for transferring the developed powder adhesive image to the sheet 26b. 33 or the like.

  The sheet 26b carried into the adhesive application unit 21 is sandwiched between the photosensitive drum 30 and the transfer roller 33 and conveyed while being folded with the folded surface (see the surface F in FIG. 5C). The powder adhesive 20 is applied to the unfolded surface (see surface A in FIG. 5 (c)) exposed side by side with the exposed surface (see FIG. 5 (d)).

  In this way, the sheet 26b having the powder adhesive 20 applied to the predetermined front and back surfaces (surface F and surface A) at a time is conveyed to the assumed attachment portion / main fixing portion 22. A hypothetical attachment portion / main fixing portion 22 has a lower endless heat belt 34 and pressure rollers 35 and 36 arranged so as to sandwich the lower endless heat belt 34 from above and below to form an assumed attachment portion. .

  The pressure roller 35 located on the lower surface (outside) of the lower endless heat belt 34 is always in contact with the lower surface of the lower endless heat belt 34, and the pressure roller 36 disposed opposite the pressure roller 35 is in the downward direction when it is assumed to be worn. And the lower endless heat belt 34 is pressed toward the pressing roller 35.

As a result, the sheet 26b is sandwiched and conveyed by the lower endless heat belt 34 and the pressing roller 35, and heat and pressure are applied, so that the powder adhesive 20 is assumed on the sheet surface.
The sheet 26 b on which the powder adhesive 20 is presupposed on the sheet surface is subsequently conveyed to the sheet folding portion 23. As for the sheet | seat 26b carried into the sheet folding part 23, the said folded surface is first widened first.

  FIG. 6 (a) shows the surface (surface A, surface B, surface C) of the sheet 26b thus spread, and the above-mentioned powder adhesive 20 is presupposed on the surface A. FIG. FIG. 6 (b) shows the back surface (surface D, surface E, surface F) of the spread sheet 26b. The powder adhesive 20 is assumed on the surface F. .

  Thereafter, in the sheet folding portion 23, as shown in FIG. 6 (c), the surface F is folded to the surface E side as indicated by the arrow k, and is continuously folded so as to be doubled with the surface F. B is folded to the surface A side as indicated by an arrow m. As a result, as shown in FIG. 6D, the sheet 26b is Z-folded.

  The Z-folded sheet 26 b is conveyed again to the assumed landing part / main fixing part 22. However, this time, the sheet 26b is carried into the main fixing unit in which the lower endless heat belt 34 and the upper endless heat belt 37 are arranged to face each other.

  Four pressing rollers including the above-described pressing roller 36 are disposed inside the lower endless heat belt 34, and the four pressing rollers inside the lower endless heat belt 34 are disposed inside the upper endless heat belt 34. Four pressing rollers are disposed at positions facing the rollers.

  Each of these pressing rollers presses the endless heat belt toward the facing portion. As a result, the Z-folded sheet 26b is nipped and conveyed by the lower endless heat belt 34 and the upper endless heat belt 37, and the coated surface (surface A, surface F) of the powder adhesive 20 and its opposite surface. (Surface B, Surface E) are pressure-bonded.

  Subsequently, the sheet 26 b is conveyed to the shape adjusting unit 24, the skew is corrected, the conveyance width direction is aligned, and further conveyed to the cutting / separating unit 25. The cutting / separating unit 25 is cut by the splitter along the cutting line 27 shown in FIG. 4 to complete two independent Z-fold pressure-bonded printed products 25c. The completed two Z-fold pressure-bonded prints 25 c are stored in the sheet storage unit 18.

  Usually, when the powder adhesive 20 is applied to the sheet 26b for the Z-fold pressure-bonded printed material, that is, the processing time for applying the powder adhesive 20 to both surfaces of the sheet 26b is the powder only on one side like the V-fold pressure-bonded printed material. Compared to the case where an adhesive is applied, it takes twice or more in time to include the reverse conveyance.

That is, in the case of the most popular Z-fold pressure-bonded prints, the coating process of the powder adhesive per sheet is delayed compared to the V-fold pressure-bonded prints, and the production efficiency of the pressure-bonded prints is reduced.
This problem can be solved if the powder adhesive can be applied to the front and back sides by a single sheet conveyance. Said temporary folding is a process performed in order to apply | coat a powder adhesive to front and back by one sheet conveyance.

(Embodiment 4)
By the way, in the method for producing a pressure-bonded printed material using a powder adhesive, as a method for applying the adhesive, 1. 1. Apply different amounts on both sides to be bonded 2. Apply one side uniformly over the entire surface, and apply only one side of the image with a single side 3. Adhesives applied on both sides are adhesives made of different materials. It is conceivable that one side is applied to the entire surface uniformly and one side is applied at a lower application rate.

  Note that the reason for applying the adhesive with such an application pattern is that when bonded, the image portion on one side and the image portion on the other side, or the image portion on one side and the other blank paper portion are free of adhesive. This is to avoid being directly pasted without. In other words, when directly bonded without an adhesive, a part of the image on one side is prevented from moving to the other side at the time of peeling.

  In any of the above cases, the adhesive is applied to both sides of the pressure-bonding surface. However, when a powder adhesive is used for the adhesive and the pressure-bonding surface, an appropriate adhesive force and peeling force can be obtained only by applying one side. The prescription can be adjusted as possible.

  In this example, an economical method of applying a powder adhesive in single-sided printing is provided. In the present invention, as shown in FIG. 6 (a), the surface 26b of the first surface is finally bonded to the surface A, the surface B, and the surface C of the first surface. The powder adhesive 20 is applied only to A by the post-printing processing section (crimp sheet forming apparatus) 2 shown in FIG.

  Similarly, as shown in FIG. 6 (b), only the surface F out of the two surfaces E and F to be finally bonded on the surface D, surface E and surface F of the second surface of the sheet 26b for pressure-bonded printed matter. A powder adhesive 20 is applied to the surface. Since the powder adhesive application method of this example is the same on the first surface and the second surface, hereinafter, for convenience of explanation, only the first surface will be taken up to explain the application method of this example.

  FIG. 7 is a diagram reprinting an example of printing of the Z-fold pressure-bonded printed material sheet 9 shown in FIG. 2 in order to explain the coating method in the fourth embodiment.

  In the following description, the powder adhesive 20 is simply referred to as the adhesive 20. In FIG. 7, the adhesive 20 is formed in a solid application pattern on the image on the image portion (the letter “A” 38 and the outer frame 39 surrounding the character 38) 40 on the surface (surface A) to which the adhesive 20 is applied. .

  Further, when the surface to which the adhesive 20 is applied (surface A) and the surface to which the adhesive 20 is not applied (surface B) are bonded together, the image portion (the character “123” on the surface to which the adhesive 20 is not applied (surface B). The adhesive 20 is also formed in a solid application pattern on the adhesive application surface (surface A) of the portion corresponding to the position 41 (broken line portions 41 'and 42') 43 'corresponding to "41" and the outer frame 42) 43 surrounding it. To do.

  Further, there is no image on the surface to which the adhesive 20 is applied (surface A) and the surface to which the adhesive 20 is not applied (surface B), and the adhesive application surface (the portion 45 where the white paper portion and the white paper portion are bonded together) On the A surface), an application pattern (thinning pattern) obtained by thinning the adhesive 20 is formed.

  In other words, when the two surfaces (surface A and surface B) of the object to be bonded (sheet 9 for Z-fold pressure-bonded printed material) are bonded, they correspond to the image portions (image portions 40 and 43) sandwiched between the two surfaces. The amount of the adhesive 20 applied to the portion (the image portion 40 and the corresponding position 43 ′) is increased, and the amount of the adhesive 20 applied to the outside 45 corresponding to the image portion is decreased. Is applied to the pressure-bonding surface (surface A of surfaces A and B) of the object to be bonded.

  Thereby, the consumption of the adhesive 20 in the part where the white paper and the white paper are bonded can be reduced, and the economic efficiency is improved.

  The thinning pattern may be a lattice shape, a halftone dot shape, or other various thinning patterns, and these thinning patterns can be arbitrarily selected from the viewpoint of adhesive strength and consumption.

  In addition, when there are images on both the adhesive application surface (A surface) and the surface to which the adhesive is not applied (B surface), and these images are opposed to each other when pasted together, both the above surfaces (A surface and B) The adhesive pattern should just be produced | generated by either one of the application | coating patterns with respect to (surface). As a result, an adhesive is formed between the images.

  The following three methods can be considered as a method of forming an adhesive application pattern for the print data.

  First, an adhesive application pattern is generated from the print data by the computer 3 that generates the print data, and is transmitted to the pressure-bonded printed material production apparatus 2 via the communication interface 8. A coating process is performed accordingly.

  This method is possible because the pressure-bonded printed material creating apparatus 2 has an adhesive application function (adhesive application unit 1) by an electrophotographic method.

  Next, when the computer 3 transmits the print data to the image recording device 4, the computer 3 transmits the print data to the press-bonded printed material creation device 2 through the communication interface 8 at the same time. The pressure-bonded printed material creating apparatus 2 generates an adhesive application pattern in the white machine from the received print data, and performs an application process using the generated application pattern.

  However, it is necessary to synchronize with the sheet 26b on which the print data received at this time and the print data supplied to the pressure-bonded printed matter creating apparatus 2 are printed. Various methods are conceivable as a solution to this problem, but as an example of the solution, an apparatus in which an image recording function and a pressure-bonded printed matter production function are integrated is solved.

  Or, even in the case of separate devices, the paper discharge unit of the image recording device and the sheet supply unit of the press-printed printed material preparation device are connected, and the printed sheets are sequentially supplied to the press-printed printed material manufacturing device, enabling synchronization. It becomes.

  Alternatively, the computer 3 sends the print data and the identification ID to the pressure-bonded printed material producing apparatus, and the pressure-bonded printed material producing apparatus is provided with a storage unit that stores a plurality of contents thereof, and the sent information (print data + ID ) Are sequentially stored.

  The computer 3 transmits the above information to the press-bonded printed material producing apparatus, and instructs the image recording apparatus to print the identification ID on an appropriate place on the sheet. The pressure-sensitive printed material producing apparatus is provided with a function of reading the identification ID of the supplied sheet and specifying the corresponding print data from the identification ID. This makes it possible to produce a coating pattern for each sheet.

  Further, for example, a line sensor or the like is provided in the pressure-bonded printed material manufacturing apparatus, and a function is provided for reading a print image and specifying the print image portion. As a result, the image portion of the supplied sheet is specified, the application pattern is generated by the own machine, and the application process according to the generated application pattern can be performed. Note that image recognition technology already exists, and a description thereof is omitted here.

(Embodiment 5)
Next, the accuracy when generating an application pattern from print data will be described. As described above, when generating an application pattern from print data, it is possible to determine the presence or absence of an image on a pixel basis and generate the application pattern by dividing it into a solid application pattern and a thinning pattern. It is the best method for this purpose.

  If the print data can be used as it is as an application pattern, it can be processed easily and at high speed. However, when the print data is developed into image data, the presence / absence of an image is determined for each pixel from the image data, and a coating pattern is generated, the processing becomes heavy and may cause a low speed.

  6 to 8, a method for determining the application pattern by determining the presence / absence of an image in a pixel group of a certain size, not for each pixel, when generating a print pattern is described below as a fifth embodiment. explain.

  FIGS. 8A, 8B, and 8C are diagrams illustrating a method for determining a coating pattern in the fifth embodiment. FIG. 8 (a) shows a sheet 26b on which the same print data as shown in FIG. 7 is printed. Further, the division for each pixel group area 46 of M (the number of horizontal pixels) × N (the number of vertical pixels) is indicated by a broken line.

  In FIG. 8B, the presence / absence of an image is determined for each area of the pixel group area 46, and the pixel group area 46 having an image is shown as a shaded area 46a by shading.

  FIG. 8C illustrates a coating pattern determined for the image presence region 46a as a result of determining the presence or absence of the image.

  That is, with respect to the surface A to which the powder adhesive is to be applied, an image present area 46a of the coated surface image portion 40 existing on the surface A itself and a non-coated surface image portion 43 present on the surface B but not on the surface A. The pixel adhesive region 46b at the position corresponding to the image-bonding region 46a is shown as a portion where the powder adhesive 20 is solid-coated.

  In addition, in the other area, that is, the pixel group area 46c where the blank paper portion and the blank paper portion are bonded together, the thinned application pattern can be determined.

  With the application pattern of this example, the amount of adhesive consumed is greater than that of discrimination in units of pixels, but there is an effect that the processing load can be reduced. The balance between the consumption amount and the processing load can be optimized by adjusting the size of the M × N pixel group region 46.

  In the above description, only the surface A and the surface B, which are the pressure-bonding surfaces of the Z-fold pressure-bonded printed material, have been described. FIG. 5 or FIG. The same applies to the surface E and the surface F. Further, the consumption of the adhesive can be reduced in the same manner for the V-folding postcard and the sealed letter type (not shown).

It is a figure which shows typically the structure of the crimping | compression-bonding sheet preparation system as Embodiment 2. FIG. (a)-(d) is a figure which shows typically the basic state of printing of the sheet | seat for Z fold crimping | compression-bonding printed materials in Embodiment 2, adhesive application, and pressure bonding. FIG. 10 is a block diagram illustrating an internal configuration of a pressure-bonded printed material manufacturing apparatus in a pressure-bonding sheet creating system as Embodiment 3. It is a figure which shows the size of the sheet | seat used as an object for pressure-bonded printed materials in a pressure-bonded printed material manufacturing apparatus. (a)-(d) is the figure (the 1) which shows the state of a sheet | seat by a top view, a perspective view, a side sectional view, etc. in order of the production process of the crimped printed matter in a crimped printed matter preparation apparatus. (a)-(d) is the figure (the 2) which shows the state of a sheet | seat with a top view, a perspective view, a side sectional view, etc. in order of the production process of the crimped printed matter in a crimped printed matter preparation apparatus. It is a figure which reprints the printing example of the sheet | seat for Z fold crimping | compression-bonding printed materials, in order to demonstrate the coating method in Embodiment 4. (a), (b), (c) is a figure explaining the determination method of the coating pattern in Embodiment 5. FIG.

Explanation of symbols

1 Printing section 2 Post-printing processing section (crimp-bonded printed material creation device)
DESCRIPTION OF SYMBOLS 3 Computer 4 Image forming apparatus 5 Main body 6 Liquid crystal display device 7 Keyboard 8 Communication interface 9 Z-fold pressure-bonded printed sheet 11, 12 Confidential information 13 Zip code 14 Address 15 Address 16 Sheet storage unit 17 Pressure-bonded printed material preparation device 18 Sheet storage unit 19 Spare paper folding part 20 Powder adhesive 21 Adhesive application part 22 Assumed attachment part / main fixing part 23 Sheet folding part 24 Shape trimming part 25 Cutting separation part 26 A3 size sheet 26a Sheet (cut-off part)
26b Seat (use part)
26c Completed Z-fold pressure-bonded printed material 27 Cutting line 28 Folding line 29 Powder adhesive container 30 Photosensitive drum 31 Recording head 32 Developing roller 33 Transfer roller 34 Lower endless heat belt 35, 36 Press roller 37 Upper endless heat belt 38 Character "That"
39 Outer frame 40 Application surface image part 41 Character “123”
42 Outer frame 43 Non-application surface image portion 43 ′ (41 ′, 42 ′) Image corresponding position 45 Blank sheet pasting portion 46 M × N pixel group area 46 a Image present area 46 b Image corresponding pixel group area 46 c Both blank pixel group areas

Claims (8)

  When the two surfaces of the object to be bonded are bonded, the amount of adhesive applied to the portion corresponding to the image portion sandwiched between the two surfaces is increased, and the bonding applied to the outside corresponding to the image portion The adhesive is applied to the pressure-bonding surface of the object to be crimped so that the amount of the adhesive is reduced.   The adhesive is only on one side of the two surfaces to be crimped of the crimping object, and on the portion corresponding to the image portion on the surface where the adhesive is applied and on the portion corresponding to the image portion on the surface where the adhesive is not applied. The adhesive application method according to claim 1, wherein only the solid is applied and the other portions are thinned out.   When the adhesive has a portion that overlaps a portion corresponding to a portion of the image on the surface to which the adhesive is not applied when bonded to a portion of the image on the surface to which the adhesive is applied, either one of the overlapping portions 3. The adhesive coating method according to claim 2, wherein the solid coating is applied only to the portion.   Application of the adhesive is controlled on the basis of the image recording data by a pressure-bonded printed material producing apparatus that has received the same image recording data from a host device as the image recording apparatus executed printing on the pressure-bonding object. The adhesive coating method according to claim 1.   The application of the adhesive is performed by specifying the part to which the host device is to apply the adhesive and the application amount thereof from the same image recording data obtained by causing the image recording apparatus to perform printing on the crimping object. The adhesive application according to claim 1, wherein a part to be coated with the adhesive and an amount of the adhesive are transmitted to the pressure-bonded printed material manufacturing apparatus, and controlled by the pressure-bonded printed material manufacturing apparatus based on the content of the transmission. Method.   6. The adhesive application method according to claim 1, wherein the image application part and the white paper part are specified for each pixel to determine the application part of the adhesive.   4. The adhesive application portion is determined by detecting the presence or absence of image data for each predetermined pixel group, and separating the image portion and the blank paper portion for each pixel group. 4. The method of applying an adhesive according to 4 or 5.   Either the image portion and the white paper portion are specified for each pixel to determine the application portion of the adhesive, or the image portion and the white paper portion are classified for each pixel group to determine the adhesive application portion, or an input operation by the user The adhesive application method according to claim 1, wherein the adhesive application method is selected according to the method.