JPH0684027A - Cleaning card - Google Patents

Abstract

PURPOSE:To provide a cleaning card capable of rationally removing foreign matters stuck to the printing head of a discharge printing type prepaid card, effectively holding a continuous printing property and safely using a prepaid card having a protective layer. CONSTITUTION:A cleaning card for cleaning the reader/writer printing head of a discharge printing type prepaid card consists of a base material layer and a metallic evaporation layer and the surface resistance value of the metallic evaporation layer is set up to 0.3 to 8OMEGA/cm<2>. Consequently a foreign matter on the printing head can be instantaneously removed without damaging the head and the continuous printing property can be recovered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning card for removing dust adhering to a reader / writer print head of a discharge printing type prepaid card.

[0002]

2. Description of the Related Art In recent years, prepaid cards have become more popular with the spread of cash cards and credit cards, and the use of telephone cards (registered trademark), orange cards, etc., which process information at the same time, has been increasing rapidly. There is.

By the way, in the discharge printing type metal vapor deposition prepaid card, important quality requirements include printing speed, storability and continuous printing property. Storability and continuous printability are contradictory required qualities.For example, in order to improve storage stability, it is necessary to make the metal layer thicker and provide a protective layer on top of it, or to thicken the protective layer above the metal layer. However, the provision of such a protective layer, on the contrary, has a drawback that continuous printability is deteriorated. That is, due to discharge breakdown during printing, dust on the protective layer of the prepaid card at the destroyed portion scatters and adheres to the print head, preventing a predetermined discharge,
The phenomenon that the continuous printability deteriorates occurs. For this reason, even if the printability is made good while the storage property is emphasized, it is difficult to make the continuous printability completely free from problems because of variations in the printer state.

Therefore, there has been attempted a method of removing dusts attached to the print head by using a file or the like.
In addition to lacking in practicality, there is a risk of damaging the print head. Also, as a cleaning card, a base material such as PET is coated with a weak adhesive resin, or a resin coating containing a relatively soft filler. I tried something, but it wasn't enough.

[0005]

That is, the physical removal method inside the apparatus as described above and the removal method using the cleaning card as tried by the present inventor are physical cleaning of the contact portion of the print head. There was a limit because of it.

In view of the above situation, the present invention reasonably and completely removes dust from the print head, keeps good continuous printability, and makes it possible to use a prepaid card having good storage stability. The purpose is to provide a card.

[0007]

The present invention comprises a substrate layer and a metal vapor deposition layer, and the metal vapor deposition layer has a surface resistance value of 0.3 to
It is a card for cleaning a reader / writer print head for a discharge printing type prepaid card, which is characterized by having 8 Ω / cm ² . Further, the present invention relates to a cleaning card having a carbon layer and / or a magnetic layer between the base material layer and the metal vapor deposition layer.

That is, the cleaning card of the present invention is
It is characterized in that the intensity of discharge is adjusted by the metal deposition layer of the card, and the dust attached to the print head is scattered by the thermal energy at the time of discharge to remove the dust.

The present invention will be described in detail below. As described above, since the metal vapor deposition layer of the present invention is removed by the thermal energy of discharge, the metal vapor deposition layer of the present invention does not damage the print head and completely removes dust, that is, the surface resistance value of the metal vapor deposition layer is 0.3. It is preferably ˜8 Ω / cm ² . 0.
And 3 [Omega] / cm ² less than become metallized film tends to be brittle, exceeds 8ohms / cm ^2, the unevenness of the surface of the metallized layer is reduced, because the energy for cleaning during discharge decreases.

The metal layer of the present invention comprises Te, Sn, In and A.
Metals such as 1, Bi, Pb, Zn, or alloys thereof, or compounds of the above metals such as Te / carbite can be formed by a vacuum deposition method, a sputtering method, a plating method, etc. preferable.

The substrate used in the present invention includes paper (for example, art paper, coated paper, laminated paper, fine paper, etc.),
Examples include natural or synthetic polymer materials such as plastic and rubber, and rarely sheet-like materials such as metal or non-metal inorganic materials. Of these, paper and polyethylene terephthalate (P
ET) sheets are preferred. The thickness of these sheets is determined by the specifications of hardware, for example, PET.
In the case of a sheet, 188 μ to 250 μ is generally used, and in the case of paper, 180 μ to 350 μ is generally used.

The cleaning card of the present invention may have a magnetic layer provided between the base material layers in addition to the base material layer and the metal vapor deposition layer described above. The current leader / writer is
This is because many cards cannot accept cards without a magnetic layer.

The magnetic layer of the present invention has characteristics of a magnetic recording layer of a coercive force of 300 to 3000 oersted, a squareness ratio of 0.7 or more, and a residual magnetic flux of 0.5 to 2.0 maxell / c.
m, and the thickness is preferably 15 μm or less.

Further, a carbon layer may be provided on the magnetic layer. Since the carbon layer is conductive, the surface resistance value of the aluminum vapor deposition layer can be lowered, and the aluminum layer can be thinned.

[0015]

【Example】

Example 1 Aluminum was vapor-deposited at 1.0 Ω / cm ² on a PET film substrate having a thickness of 188 μm to form a metal vapor deposition layer, and a cleaning card was prepared.

[0016] [Example 2] Magnetic powder BaO-6Fe ₂ O ₃
70 parts by weight (coercive force 2750 oersted), 2 parts by weight of sodium polycarboxylic acid, and 60 parts by weight of water were dispersed by a paint shaker, and further 20 parts by weight of an acrylic emulsion was added to obtain a magnetic coating liquid. This is PET of thickness 188μ
A solid content of 30 g / m ^{2 was} coated on the base material of the film, oriented with a permanent magnet (3500 gauss), and dried to provide a magnetic layer. Aluminum on the magnetic layer is 5.0 Ω / cm ²
It vapor-deposited and formed the metal vapor deposition layer, and created the cleaning card.

[Example 3] After a magnetic layer was formed on a PET film having a thickness of 250 µm in the same manner as in Example 2, 2.7 parts by weight of carbon black and 6.5 parts by weight of nitrocellulose were further provided on the magnetic layer. A coating liquid dissolved in a solvent composed of ethyl acetate and methyl isobutyl ketone was coated and dried so that the solid content was 3.5 g / m ^2, and a carbon layer was provided. Aluminum was vapor-deposited on the carbon layer at 7.0 Ω / cm ² to form a metal vapor-deposited layer, to prepare a cleaning card.

[Embodiment 4] On a coated paper having a thickness of 200 μ,
After providing a magnetic layer in the same manner as in Example 2, aluminum was vapor-deposited on the magnetic layer to form a metal vapor-deposited layer by 0.4 Ω / cm ² to obtain a cleaning card.

[Embodiment 5] A synthetic paper having a thickness of 220 μm was provided with a magnetic layer in the same manner as in Embodiment 2, and aluminum was vapor-deposited on the magnetic layer at 1.0 Ω / cm ² to form a metal vapor deposition layer. Formed to obtain a cleaning card.

Example 6 A magnetic layer was provided on a PET film having a thickness of 188 μm in the same manner as in Example 2, and silver was vapor-deposited at 2.0 Ω / cm ² on the magnetic layer to form a metal vapor deposition layer. Formed to obtain a cleaning card.

Comparative Example 1 Aluminum was vapor-deposited at 0.2 Ω / cm ² on a PET film substrate having a thickness of 188 μm to form a metal vapor deposition layer to obtain a cleaning card.

[Comparative Example 2] On a substrate of a PET film having a thickness of 250 μm, aluminum was vapor-deposited at 9 Ω / cm ² to form a metal vapor deposition layer to obtain a cleaning card.

Comparative Example 3 A metal vapor deposition layer was formed by vapor-depositing aluminum at 1.0 Ω / cm ² on a PET film substrate having a thickness of 188 μ, and 30 parts by weight of calcium carbonate was formed on the metal vapor deposition layer. A coating liquid consisting of 100 parts by weight of a polyester resin was applied on a solid content of 10 g / m ² to form a protective layer, and a cleaning card was obtained.

Comparative Example 4 Aluminum was vapor-deposited at 2.0 Ω / cm ² on a substrate of coated paper having a thickness of 200 μm to form a metal vapor deposition layer. Further, an acrylic ultraviolet curable resin was coated on the metal vapor deposition layer so as to have a concentration of 0.7 g / m ² and cured by irradiation with ultraviolet rays to form a protective layer, thereby obtaining a cleaning card.

[Comparative Example 5] A magnetic layer was provided on the base material of a PET film having a thickness of 188 μm in the same manner as in Example 2, and then aluminum was vapor-deposited at 1.0 Ω / cm ² on the magnetic layer. A metal vapor deposition layer was formed. 0.4 μm of acrylic resin was applied on the upper portion to obtain a cleaning card.

[Test Method] The thickness of the protective layer above the metal deposition layer of the discharge printing type prepaid card is 1.5 μm in order to create a continuous printing defect in the reader / writer printhead for the discharge printing type prepaid card. The continuous printing of the card is to create a state where the printing becomes unclear (dot skipping). 10 cleaning cards
Cleaning the print head by printing lines,
The number of cleaning cards required to recover clear printing was examined. After recovery, the completeness of continuous printability recovery was examined using a prepaid card having a protective layer of about 1 μm. By using 1 to 3 cleaning cards,
Then, 100 sheets of prepaid cards having a protective layer of about 1 μm were printed, and those having no problem were evaluated as good.

The results of testing the cleaning cards obtained in Examples 1 to 6 and Comparative Examples 1 to 5 by the above method are shown in Table 1.

[0028]

[Table 1] Number of sheets required for recovery Completeness of recovery Example 1 2 sheets 100 sheets thereafter No problem at all Example 2 2 sheets 100 sheets thereafter No problem at all Example 3 2 sheets 100 sheets thereafter No problem even when printed Example 4 2 sheets 100 sheets thereafter No problem at all Example 5 2 sheets 100 sheets thereafter No problem at all Example 6 2 sheets 100 sheets even after printed No problem Comparative Example 1 No problem even after printing 10 sheets 100 sheets thereafter Comparative Example 2 5 sheets Instable discharge, printing failure at 50th printing restart Comparative Example 3 No recovery, head cleaning with brush required Comparative Example 4 It is not recovered and the head needs to be cleaned with a brush. Comparative example 5 5 sheets Printing restart Printing failure on the second sheet

[0029]

According to the cleaning card of the present invention,
It is possible to instantly remove dust from the print head without damaging the print head and restore continuous printability. Therefore, the prepaid card having the protective layer can be used with confidence.

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Claims (2)

[Claims] 1. A reader / writer print head for a discharge printing type prepaid card comprising a base material layer and a metal vapor deposition layer, the surface resistance of the metal vapor deposition layer being 0.3 to 8 Ω / cm ² . Cleaning card. 2. The cleaning card according to claim 1, wherein a carbon layer and / or a magnetic layer is present between the base material layer and the metal vapor deposition layer.