JPH10157335A - Optically reading pressure sensitive copying notebook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optically reading pressure sensitive copying notebook applied with an ink contained in an optically reading coloring agent microcapsule on the rear side of the upper note having an improved optically reading accuracy by restraining the blur of the developed image to be optically read and improving the coloring density. SOLUTION: A no carbon type optically reading pressure sensitive copying notebook 2 comprising an upper note 4 applied with a coloring agent microcapsule layer 4 on the rear side and a lower note 3 applied with a color developer layers 5 on the surface side, where an ink D contained in an optically reading coloring agent microcapsule 3 having a 2μm or less average particle size is applied at a predetermined part of the upper note rear side, with the optically reading coloring agent microcapsule C is mixed in the coloring agent microcapsule layer 4 in the applied part can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved pressure-sensitive copy sheet for optical reading, and more particularly, to a technique for suppressing blurring of a color image for optical reading and improving color density. The present invention relates to a pressure-sensitive copy form for optical reading in which the accuracy of reading a color image is improved.

[0002]

2. Description of the Related Art As part of the labor saving of logistics management which is increasing, input and management of logistics information by optical reading of barcodes and OCR characters from manual input using a troublesome keyboard have been actively performed. ing. This method is completely different from the conventional keyboard input, in which input information is read by an optical reading device such as a bar code reader or an OCR reader having predetermined optical reading means, and is stored and managed.

In recent years, a technology for optically reading a color image on a pressure-sensitive copy form has also been developed, and work for inputting information from the color image has been performed. For example, JP-A-5-11
In Japanese Patent No. 2088, an ink layer containing an optical reading color former microcapsule having an absorption wavelength corresponding to a predetermined optical reading device is provided in a laminated state on a predetermined portion on the back surface of a higher-order document corresponding to an optical reading portion, and is visually recognized. A technique related to a pressure-sensitive copying form for optical reading provided with a color forming section for use in reading and an optical reading color section has been disclosed, and the pressure-sensitive copying form having such a configuration has been put to practical use.

[0004] A conventional method of producing an ink containing a color former and a microcapsule for optical reading is described in the above-mentioned JP-A-5-112.
No. 088, the microcapsule dispersion produced in the aqueous system is once filtered and dried,
After obtaining a powdered capsule, this is used as an organic solvent, oil, resin,
Dispersed in vehicles such as wax, after mixing predetermined additives, steam drying type, ultraviolet curing type, oxidation polymerization type,
It is prepared into various optical reading capsule-containing inks such as a hot-melt type, and is applied to the surface of the color former microcapsule layer on the back of the upper form.

[0005]

As described above, the conventional method for producing an ink containing a color developing agent microcapsule for optical reading includes a step of once filtering and drying the microcapsule dispersion to obtain a powdered capsule. Therefore, agglomeration of the capsules and deterioration of the coloring agent occurred, which contributed to a decrease in the coloring density. Further, due to such agglomeration of the capsules, the average particle diameter of the conventional optical reading color former microcapsules is about the same as or smaller than that of the color former microcapsules applied to the back of the upper form of a normal pressure-sensitive copy form. When the ink containing the optical reading color former microcapsules is applied to the color former microcapsule layer on the back of the upper form, the color reading agent microcapsules for optical reading are mixed in the layer. Without being deposited on the surface of the layer. It was confirmed that the bleeding of the color image was larger in this state than in the mixed state.

The conventional ink containing microcapsules for optical reading is generally prepared as a flexographic ink type in which powder capsules are mixed with an organic solvent or oil for flexographic ink. Cannot be applied and dried at the same time as the printing process with a normal offset printing press, it is necessary to apply using a special coating device and drying device in a separate process, and the operator uses an organic solvent. The inconvenience that productivity and workability are bad, such as having a bad influence on the body of the person, has arisen.

In view of these problems, the present invention suppresses bleeding of a color image for optical reading in a pressure-sensitive copy form in which an ink containing a color former for optical reading and microcapsules is coated on the back of a higher-level form. Another object of the present invention is to provide a pressure-sensitive copy form for optical reading in which the optical reading accuracy is improved by improving the color density.

[0008]

Means for Solving the Problems In order to solve the above problems, the present inventors have prepared an optical reading color forming agent microcapsule without going through a capsule powdering step.
The average particle diameter can be 2 μm or less, and when the ink prepared using this is applied to the color former microcapsule layer on the back of the upper form, the color former microcapsules for optical reading are preferably mixed in the layer. As a result, it has been found that the reading accuracy of the color image for optical reading is remarkably improved, and a pressure-sensitive copy form for optical reading of the present invention has been conceived.

That is, the pressure-sensitive copy form for optical reading according to the present invention is a carbonless system comprising an upper form having a color former microcapsule layer on the back side and a lower form having a developer layer on the front side. In a pressure-sensitive copy form, an ink containing an optical reading color forming agent microcapsule having an average particle diameter of 2 μm or less is applied to a predetermined portion on the back side of the upper form, and in the applied portion, the color forming agent microcapsule layer The optical reading colorant microcapsules are in a mixed state.

Further, in the pressure-sensitive copying form for optical reading according to the present invention, the ink containing the color-forming agent microcapsules for optical reading is contained in an ultraviolet curable ink vehicle between the vehicle and the capsule wall material. An ultraviolet-curable ink in which the optical reading color former microcapsules are dispersed in a state in which a solvent having a dispersing agent function compatible with is interposed.

In particular, the optical reading pressure-sensitive copy form of the present invention is characterized in that the optical reading color former is a coloring dye having an absorption wavelength peak at 600 to 700 nm.

In the present invention, a pressure-sensitive copy form composed of an upper form having a color former microcapsule layer on the back side and a lower form having a developer layer formed on the front side is generally used conventionally. It is coated with a leuco dye such as crystal violet lactone, a color former such as fluoran or phenothiazine, or a developer such as activated clay, a phenol resin, or a metal salt of an aromatic carboxylic acid. .

The colorant for optical reading in the present invention is preferably a conventional dye having an absorption wavelength in the near-infrared region. Specifically, NIR-78BLACK and H-1046, manufactured by Yamada Chemical Industry Co., Ltd.
Nippon Soda's PSD-802, Hodogaya Chemical's IR-011,
GREEN-118 manufactured by Yamamoto Kasei Co., Ltd., but preferably, 600 corresponding to the reading wavelength of a general optical reading device is used.
Suitable is a coloring dye having an absorption wavelength peak at about 700 nm, more preferably a coloring dye having an absorption wavelength peak at around 680 nm, for example, Yamamoto Kasei's GN-2 and GN-169. Can be

Next, a method for producing an ink containing an optical reading color former microcapsule will be described. Using the above-described optical-reading color former as a core substance, for example, a styrene-maleic anhydride partially hydrolyzed product and a melamine or urea-formalin prepolymer, and a melamine or urea-formalin resin as a capsule wall material by an in-saturation method To form microcapsules having an average particle diameter of 2 μm or less. Microcapsules formed in the aqueous system, a solvent having an affinity for both the capsule wall material and the ink vehicle, for example, after providing a surface layer made of a lower alcohol such as glycerin so as to cover the capsule wall material, Furthermore, by vaporizing and removing water using a vacuum dehydration method, the microcapsules can be replaced in a dispersed state in the ink vehicle in a state of being coated with the solvent without powdering the microcapsules. Thus, a desired colorant for optical reading microcapsule-containing ink can be obtained.

[0015] Since the prepared ink does not have a step of drying and powdering the capsule forming liquid as in the prior art, the microcapsules dispersed in the ink vehicle combine with each other to form enlarged particles. Therefore, the average particle diameter can be reduced to 2 μm or less as in the case of producing capsules. In addition, the physical properties such as elasticity and strength at the time of its production are not impaired, the capsule is not broken by the kneading rollers of the printing unit, and the offset printing machine is used under the same conditions as when using ordinary printing ink. Printing can be performed with a normal printing machine such as a printing machine.

Here, preparation examples in which the ink containing the color former microcapsules for optical reading in the present invention is an ultraviolet curable ink will be described, but the present invention is not limited to these. A styrene-maleic anhydride copolymer was dissolved together with a small amount of sodium hydroxide. In 200 parts of an aqueous solution containing 5% by weight of this solution, 170 parts of alkylnaphthalene and GN-2 (manufactured by Yamamoto Kasei) and GN-16 were added.
9 (same as above) mixed at a ratio of 1: 2.
0 parts were heated and dissolved, and this was emulsified and dispersed using a homogenizer to obtain an emulsion having an average particle diameter of 1.8 μm. Next, melamine-formalin prepolymer 60 was added to this emulsion.
Then, the temperature of the system was stirred at 75 ° C. for 2 hours to prepare a capsule forming liquid containing 50% by weight of the optical reading color former microcapsules. Further, 80 parts of this capsule forming liquid, 20 parts of glycerin, and 25 parts of an ultraviolet curable resin vehicle were added, and water was removed by a vacuum dehydration method under predetermined conditions. Further, the whole was mixed with stirring while adding 35 parts of a preparation for printing ink to obtain a desired ink containing a color former microcapsule for optical reading.

As a result of examining the comparison of the reading accuracy between the ink containing the color forming agent microcapsules for optical reading of the present invention prepared as an ultraviolet curable type and the conventional ink prepared as a conventional flexo type, the existing six-part set was examined. Using a pressure-sensitive copy form, the ink containing the optical reading colorant microcapsules of the present invention and the conventional one is applied to the colorant microcapsule layer on the back surface of each part at the same printing pressure with a barcode printing printer. When the bar code was printed, the conventional bar code became readable by 98% or more up to the fourth part. On the other hand, the bar code of the present invention suppressed the bleeding of the color image compared to the conventional bar code, and developed the color image. As the density was improved, the reading accuracy of the color image was improved, and it was possible to read 98% or more up to the final sixth part, and a remarkable improvement was observed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an optical reading pressure-sensitive copy form of the present invention will be described in more detail with reference to examples. FIG. 1 is an exploded view of the optical reading pressure-sensitive copy form of the present invention, and FIG. 2 is a sectional view of the optical reading pressure-sensitive copy form of the present invention.

As shown in FIG. 1, the pressure-sensitive copy form for optical reading 1 of the present embodiment is configured as a delivery form, and a "delivery note" having a coloring agent microcapsule layer 4 on the back side.
The upper form 2 and the lower form 3 which is a "bill" with the developer 5 applied to the front side are separably bound at the ends. "Item" is displayed on the surface of the upper form 2 in a predetermined portion.
A visual information entry section A for entering "article name", "unit price", "address", "name", and the like, and an optical read information entry section B on which a barcode 6 is printed in advance are provided. A predetermined portion of the front surface of the form 3 is provided with a visual information copying section a and an optically read information copying section b on which a copy barcode 6 'is printed in advance.

As shown in FIG. 2, an ink D containing an optical reading colorant microcapsule C is applied to a portion corresponding to the optical reading information entry portion B on the back surface of the upper form 2, and further, the ink D application portion is provided. As shown in the accompanying partial enlarged view, the color former microcapsules C for optical reading are mixed in the color former microcapsule layer 4. The optical reading pressure-sensitive copy form thus configured can be manufactured in a batch process using ordinary pressure-sensitive copying paper in a printing process together with general printing using a normal offset printing machine. The reading accuracy has been greatly improved.

[0021]

As described above, the optically-reading pressure-sensitive copy form of the present invention can be manufactured together with the printing process using a normal offset printing machine, thereby suppressing bleeding of a color image.
Since the reading accuracy of the color image is improved due to the improvement in the color density of the color image, it can be suitably used for various optical reading pressure-sensitive copy forms such as delivery slips, application forms, sales slips, and the like.

[Brief description of the drawings]

FIG. 1 is an exploded explanatory view of an optical reading pressure-sensitive copy form of the present invention.

FIG. 2 is an explanatory sectional view of a pressure-sensitive copy form for optical reading according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical reading pressure-sensitive copy form 2 Upper form 3 Lower form 4 Color former microcapsule layer 5 Developer layer A Visual information writing part a Visual information copying part B Optical reading information writing part b Optical reading information copying part C Optical reading Coloring Agent Microcapsule D Ink Containing Coloring Agent Microcapsule For Optical Reading

Claims (3)

[Claims] 1. A carbonless pressure-sensitive copy form comprising an upper form having a color former microcapsule layer on the back side and a lower form having a color developer layer on the front side, wherein the back side of the upper form A predetermined portion of the side is coated with an ink containing an optical reading color forming agent microcapsule having an average particle diameter of 2 μm or less,
The pressure-sensitive copy form for optical reading, wherein the color forming agent microcapsules for optical reading are mixed in the color forming agent microcapsule layer in the application section. 2. An ink containing an optical reading color forming agent microcapsule, in a UV-curable ink vehicle, a solvent having a dispersing agent function compatible with both the vehicle and the capsule wall material interposed between the vehicle and the capsule wall material. The pressure-sensitive copy form for optical reading according to claim 1, which is an ultraviolet curable ink in which the colorant microcapsules for optical reading are dispersed in the folded state. 3. A color former for optical reading having a wavelength of 600 to 700 nm.
The pressure-sensitive copy form for optical reading according to claim 1, which is a coloring dye having an absorption wavelength peak.