JP2848582B2 - Printer-printable information bulletin sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display sheet which is suitable for printing by a printer and which can be magnetically attracted to the surface of a ferromagnetic article such as an indoor or outdoor iron plate or white board.

[0002]

2. Description of the Related Art Conventionally, various printers such as a thermal printer, a dot impact printer, and an ink jet printer have been frequently used as output devices of a word processor, a computer and the like. Most of the recording sheets used in these printers are paper, and when you want to display the information printed on the paper, fix the paper to a suitable article with a thumbtack or the like, stick it with an adhesive tape, or use a magnet. And so on. Further, since these sheets are paper, they do not have weather resistance, and it is difficult to post them outdoors for a long period of time. Furthermore, there are labels for printing with a special adhesive, but these labels do not exhibit sufficient adhesive strength unless the surface to be adhered is clean and smooth, and are difficult to use outdoors. For this reason, there has been a strong demand that a recording sheet printed by a printer can be magnetically attracted to the surface of a ferromagnetic article such as an iron plate or a white board as it is, and that information can be displayed with weather resistance.

[0003] Some of those currently on the market are:
There are also paper sheets or synthetic resin films laminated on a flexible magnet such as a magnet sheet, but these are used as they are or handwritten or printed to form an information bulletin sheet. This method does not take into account smooth feeding of the sheet or printing by a printer, and is not suitable for printing on a printer.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to meet these requirements. That is, an information bulletin sheet can be smoothly sent to a general printer, and printing with good printability can be performed. , A printer printed sheet
The object of the present invention is to provide an information posting sheet that can be printed on a printer, which can magnetically adsorb information on a surface of a ferromagnetic article such as an indoor or outdoor iron plate or a whiteboard to directly display information.

[0005]

In order to achieve the above object, the present inventor manages the thickness, flexural modulus and surface magnetic flux density of a sheet in which a flexible magnet layer and a layer to be printed are laminated. It is considered that this is effective for the smoothness and printability of sheet feeding in the printer, and the adsorptivity to ferromagnetic articles such as an iron plate and a white board. The present inventors have found that the above-mentioned problems can be achieved by setting the surface magnetic flux density to a specific appropriate range, and have reached the present invention.

A feature of the present invention is that the information display sheet that can be printed by a printer is a sheet in which a layer to be printed is laminated on a flexible magnet layer, and the thickness of the sheet is 0.1 mm or more and 0.4 mm or more.
Hereinafter, a flexural modulus of 10 Kg / mm ² or more 500 Kg / mm ² or less, and the surface magnetic flux density is 50 gauss or more, is that.

In order to print on the information bulletin sheet of the present invention with a printer, as shown in FIG. 2, the information bulletin sheet is printed by a print head while being moved while being wound around a platen, and is discharged. The printability and printability are greatly affected by the thickness and flexural elasticity of the sheet. The range in which the smoothness and printability of sheet feeding can be practically used is a sheet thickness of 0.1 to 0.4 mm and a flexural modulus of 10
Kg / mm ² or more 500 Kg / mm ² or less, more preferably a thickness of the sheet is 0.1mm or more 0.3mm or less, flexural modulus is 20 Kg / mm ² or more 300 Kg / mm ² or less.

Here, the thickness of the sheet is 0.1 mm or more.
The reason for being 4 mm or less is that if it exceeds 0.4 mm, it is difficult for a normal printer to inhale the sheet, and even if it can be inhaled, the platen diameter becomes apparently large, and the feed amount of the printing surface becomes excessive. Solid printing that fills the space between lines becomes impossible. If it is less than 0.1 mm, the amount of magnetic powder required to obtain a sufficient magnetic attraction cannot be blended. Further, the sheet thickness may be within the above-mentioned range,
When the thickness is 3 mm or less, smoother sheet feeding can be obtained. In particular, there is no partial line gap in solid printing, and more preferable printing and sheet feeding can be obtained.

The sheet has a flexural modulus of 10 kg / mm ² or more and 50 or more.
0 kg / mm ² is the less, when less than 10 Kg / mm ^2, be a printer inhaled, after printing, sheet - DOO the discharge becomes difficult remain wound on the platen of the printer, 500 Kg / mm ²
If it exceeds, the sheet cannot be fed because it does not wrap around the platen of the printer or cracks occur in the magnet layer. Flexural modulus may be within the aforementioned range, but more preferably smooth sheet when the scope 20 Kg / mm ² or more 300 Kg / mm ² to less than - the bets feed. When the surface magnetic flux density is 50 gauss or more, if the surface magnetic flux density is less than 50 gauss, the magnetic attraction force will be insufficient, the vertical ferromagnetic material surface will not be able to support its own weight, and will not be the intended magnetic attraction display sheet. It is.

Further, if the layer to be printed is made of a synthetic resin film or synthetic paper having water resistance, it can be used outdoors. Further, by performing easy printing processing such as roughening the surface to be printed, more suitable printing becomes possible.

As the flexible magnet layer used in the present invention, any material obtained by dispersing a magnetic powder in a flexible substance such as plastic or rubber can be used. However, barium ferrite or strontium ferrite in a thermoplastic resin can be used. A sheet formed by dispersing a ferromagnetic powder and forming a sheet can be more suitably used. The printable layer used in the present invention is preferably one that can sufficiently cover the flexible magnet layer having a dark color and is as thin as possible. For example, when a synthetic resin film provided with an opaque layer of aluminum or the like is formed by vacuum evaporation or the like, the color of the evaporated metal can be used as the base color, or an opaque synthetic resin film that is entirely colored may be used. In the present invention, the layer to be printed may be laminated on the flexible magnet layer by an ordinary laminating method. In addition to laminating using a bonding agent such as an adhesive or an adhesive, the flexible magnet layer and the layer to be printed are laminated. Depending on the material, the layers can be directly laminated only by thermocompression bonding.

[0012]

The information display sheet of the present invention moves while being wound around the platen 7 in the printer as described above, and good printing is performed by the print head 6. At this time, the print-receiving sheet for the printer of the present invention Because of the above-mentioned moderate thickness, bending elasticity, and magnetic force, it does not wrap around the platen before printing, or on the other hand, stays wrapped around the platen after printing, making it difficult to discharge, and smooth sheet feeding Can be. Further, since the printed sheet has a sufficient magnetic force, the sheet printed with a printer can be easily displayed by magnetically attracting the sheet to a ferromagnetic article such as an iron plate or a white board.

[0013]

Next, the information printing sheet of the present invention which can be printed by a printer will be clarified by Examples and Comparative Examples shown in Table 1. In FIG. 1, reference numeral 1 denotes a print-receiving sheet for a printer, 2 denotes a flexible magnet layer, 3 denotes an adhesive layer, 3 ′ denotes an opaque layer, 4 denotes a print-receiving layer, and in FIG. head,
7 is a platen. Flexural modulus is ASTM D790
A method of measuring the amount of sagging due to its own weight using cantilever tension was used in accordance with the above. The surface magnetic flux density was measured using a GM-1220 type Gauss meter and a T-22 type probe manufactured by Denki Kogyo Kogyo KK.

[0014]

[Table 1]

Example 1 88 parts by weight of barium ferrite magnetic powder and 12 parts by weight of chlorinated polyethylene resin were mixed in a kneader, and the mixture was roll-rolled to a thickness of 0.17.
The sheet-shaped flexible magnet layer 2 of mm was formed. The flexible magnet layer 2 has a rough surface to make it easy to print, an opaque layer formed on the back surface by vacuum evaporation of aluminum, and a 0.025 mm-thick adhesive is further applied. A 0.05 mm polyester film was laminated by pressing with a roll. The flexible magnet layer 2 of this laminated sheet was 2.8.
Magnetization was performed in a striped manner at intervals of mm to obtain an information display sheet 1 comprising a flexible magnet layer 2, an adhesive layer 3, an opaque layer 3 ', and a layer 4 to be printed. The thickness of this sheet 1 is 0.2
5 mm, flexural modulus 50 kg / mm ² , surface magnetic flux density 17
It was 0 Gauss.

This sheet 1 is made of Fujitsu OASYS30-
Put it into the printer part of LX701 type word processor,
Printing was performed by the print head 6 via the ink ribbon 5 while being wound around the platen 7, and after printing, the print head 6 was discharged outside the printer unit. At this time, the sheet 1 does not wrap around the platen 7 before printing, or remains wrapped around the platen 7 after printing, making it difficult to discharge. Obtained. Further, when the printed sheet 1 was attached to a white board (not shown), it was surely magnetically attracted and did not fall off.

Example 2 86 parts by weight of strontium ferrite magnetic powder and 14 parts by weight of an ethylene-ethyl acrylate copolymer resin were mixed in a kneader, and the mixture was roll-rolled to form a sheet-like flexible sheet having a thickness of 0.21 mm. Sex magnetic layer 2 was formed. A 0.05 mm thick white vinyl chloride film coated with a 0.03 mm thick adhesive 3 was pressure-bonded to the flexible magnet layer 2 with a roll, and laminated. The flexible magnet layer 2 of this laminated sheet was magnetized in the same manner as in Example 1 to obtain the information display sheet 1. The thickness of this sheet 1 was 0.29 mm, the flexural modulus was 32 kg / mm ² , and the surface magnetic flux density was 210 gauss.

This sheet 1 is made of RUPO JW95 manufactured by Toshiba.
It was put into the printer section of the KP type word processor, and printing was performed in the same manner as in Example 1. As a result, a sheet that could be fed smoothly and had good printing was obtained. Further, when the printed information bulletin sheet 1 was directly stuck to a drum placed outdoors, the magnetically attracted sheet was securely attracted, and the bulletin board could be posted without falling off or being unclear even when exposed to wind and rain.

Example 3 After 30 parts by weight of phenol was dissolved in 10 parts by weight of a nylon resin, 40 parts by weight of barium ferrite magnetic powder was mixed. This mixture was applied to a glass plate and dried by heating at 80 ° C. to form a sheet-shaped flexible magnet layer 2 having a thickness of 0.13 mm. A 0.05 mm-thick white vinyl chloride film coated with a 0.03 mm adhesive 3 was laminated on the flexible magnet layer 2 in the same manner as in Example 2. The flexible magnet layer 2 of this laminated sheet was magnetized in the same manner as in Example 1 to obtain the information display sheet 1. This sheet 1 had a thickness of 0.21 mm, a flexural modulus of 180 kg / mm ² and a surface magnetic flux density of 80 Gauss. This sheet 1 could be printed in the same manner as in Example 1, and when it was attached to a steel locker, it was securely magnetically attracted and did not fall off.

(Example 4) A sheet-like flexible magnet layer 2 having a thickness of 0.17 mm was formed in the same manner as in Example 1 except that barium ferrite was changed to strontium ferrite. A synthetic paper having a thickness of 0.12 mm and a hot-melt adhesive 3 having a thickness of 5 μm applied to the back surface was laminated on the flexible magnet layer 2 with a heating roll. The flexible magnet layer 2 of this laminated sheet was magnetized in the same manner as in Example 1 to obtain the information display sheet 1. The thickness of the sheet 1 was 0.29 mm, the flexural modulus was 29 kg / mm ² , and the surface magnetic flux density was 200 gauss. This sheet 1 was put into a Canon BJ-10V Custom-type bubble jet printer, and printing was performed in the same manner as in Example 1. As a result, a sheet was fed smoothly and good printing was obtained. Further, when the printed information bulletin sheet 1 was affixed to a white board, it was surely magnetically attracted and did not fall off.

Example 5 An information bulletin sheet 1 was obtained in the same manner as in Example 1 except that the magnetic powder was strontium ferrite and the thickness of the flexible magnet layer 2 was 0.3 mm. This sheet 1 has a thickness of 0.38 mm and a flexural modulus of 28 kg.
/ mm ² and the surface magnetic flux density was 320 Gauss. When this sheet 1 was loaded into the printer unit of the OASYS30-LX701 type word processor manufactured by Fujitsu, printing was possible in the same manner as in Example 1. However, in the case of ordinary printing, smooth sheet feeding and good printing were obtained.However, when solid printing was performed over the entire surface, a gap was partially formed between lines or the sheet feeding became slightly smooth. There was a case. When the sheet 1 was attached to a drum placed outdoors as in the case of Example 2, the sheet was magnetically attracted, and even when exposed to wind and rain, it could be displayed without falling off or making the print unclear.

(Comparative Example 1) The thickness of the flexible magnet layer 2 was set to 0.
An information bulletin sheet 1 was obtained in the same manner as in Example 1 except that the length was 42 mm. The thickness of the sheet 1 was 0.50 mm, the flexural modulus was 15 kg / mm ² , and the surface magnetic flux density was 360 gauss. This sheet 1 is made by Fujitsu OASYS30-LX70
When I put it into the printer section of a 1-type word processor,
The sheet 1 did not wrap around the platen 7 and could not be sucked. For this reason, printing could not be performed.

Comparative Example 2 A sheet-like flexible magnet layer 2 having a thickness of 0.17 mm was formed in the same manner as in Example 1. This flexible magnet layer 2 has a thickness of 0.03 mm as in the second embodiment.
A white vinyl chloride film having a thickness of 0.05 mm to which the pressure-sensitive adhesive 3 was applied was laminated. Flexible magnet layer 2 of this laminated sheet
Was magnetized in the same manner as in Example 1 to obtain an information bulletin sheet 1. The thickness of this sheet 1 was 0.25 mm, the flexural modulus was 8.8 kg / mm ² , and the surface magnetic flux density was 170 gauss.
When this sheet 1 was printed in a printer unit of a RUPO JW95KP type word processor manufactured by Toshiba, printing was performed, and after printing, the sheet 1 remained wound around the platen 7 and could not be discharged.

Comparative Example 3 A mixture of 80 parts by weight of barium ferrite and 20 parts by weight of an epoxy resin was applied to a 0.05 mm polyester film having an opaque layer as in Example 1, and cured by heating at 80 ° C. Thus, an information bulletin sheet 1 having a flexible magnet layer 2 of 0.2 mm was obtained. The thickness of the sheet 1 was 0.25 mm, the flexural modulus was 750 kg / mm ² , and the surface magnetic flux density was 120 gauss. When this sheet 1 was put into the printer unit of a RUPO JW95KP type word processor manufactured by Toshiba, the sheet 1 was not wound around the platen 7 and the sheet 1 could not be sucked, so that printing could not be performed. In addition, cracks occurred in the flexible magnet layer 2.

[0025]

According to the present invention described above, according to the present invention, the thickness of the sheet is 0.1mm or more 0.4mm or less, a flexural modulus of 10 Kg / mm ² or more 500 Kg / mm ² or less, the surface magnetic flux density 50
Since it is equal to or more than Gauss, the sheet of the present invention can be smoothly fed to a general printer, and printing with good printability can be performed. Also, the information printed sheet can be magnetically attracted to the surface of a ferromagnetic article such as an indoor or outdoor iron plate or a white board without any change as it is printed by the printer.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a conceptual diagram of a main part of a printer for printing sheets according to the embodiment.

FIG. 3 is a sectional view of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Information display sheet 2 Flexible magnet layer 3 Adhesive layer 3 'opaque layer 4 Printed layer 5 Ink ribbon 6 Print head 7 Platen

Claims (7)

(57) [Claims] 1. A sheet obtained by laminating the print layer to the flexible magnetic layer, the thickness of the sheet is 0.1mm or more 0.4mm or less, a flexural modulus of 10 Kg / mm ² or more 500 Kg / mm ² or less And a printer-printable information bulletin sheet having a surface magnetic flux density of 50 gauss or more. Wherein the thickness of the sheet at 0.1mm or 0.3mm or less, and bending printer printable information posted sheet according to claim 1, wherein the elastic modulus is 20 Kg / mm ² or more 300 Kg / mm ² or less. 3. The printer-printable information display sheet according to claim 1, wherein the flexible magnet layer contains ferromagnetic particles of barium ferrite or strontium ferrite. 4. The information printing sheet according to claim 1, wherein the printing target layer is a synthetic resin film. 5. The information printing sheet according to claim 1, wherein the printable layer has an easily printed surface. 6. The information printing sheet according to claim 1, wherein said information printing sheet is printed by thermal transfer recording. 7. The printer according to claim 1, wherein an opaque layer and an adhesive layer are provided between the print-receiving layer and the flexible magnet layer. Information bulletin sheet.