JPH0733113B2 - Thermal transfer film for concave marking - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a concave thermal transfer film for stamping which has improved hot stamping for stamping a trademark or the like on a writing instrument such as a pencil or a ballpoint pen.

[Conventional technology]

Conventionally, a thermal transfer film for hot stamping or the like is formed of a release layer, a metal layer (colored layer) by pigment or vapor deposition, an aluminum vapor deposition layer, an adhesive layer, etc. on the upper surface of a polyester film as shown in FIG. 3 as an example. It is made of a material layer, and the transfer surface is positioned on the surface (transferred surface) of writing instruments such as paper, resin moldings, pencils, etc., and the printing part is engraved from the lower surface (back surface) of the polyester film. By pressing the heated printing part of (printing size) appropriately, the adhesive layer directly under the printing part is melted and the pigment or metal layer is transferred (peeled) from the printing film to the transfer surface by peeling from the film. This is generally known as so-called hot stamping.

On the other hand, in a heat-sensitive transfer material composed of a heat-meltable ink layer provided on the upper surface of the base film, the ink layer is melted by a heat pulse applied from the heating head from the lower surface (back surface) of the film, and the ink such as paper is covered. There is known a thermal transfer device of a so-called thermal printer that transfers to a transfer surface.

There is also known a so-called wire dot printer print head in which a plurality of printing wires are advanced and retracted at a high speed by an electromagnetic drive device to print on a paper or the like via an ink ribbon impregnated with ink. Further, a so-called typewriter is also known in which an engraved printing element is also printed on paper or the like via an ink ribbon.

[Problems to be Solved by the Invention]

Various resin moldings such as paper and daily necessities, or writing instruments such as pencils and ballpoint pens are required to have various personalized names such as personal names, companies, schools, etc. There are various countermeasures, but hot stamping is used because of its quality, cost and convenience.

However, the conventional method by hot stamping or the like is convenient when a large amount of the same print pattern is printed, but has the following problems when performing a small amount of various prints.

(1) When changing the print pattern, it is necessary to replace the gold plate on which the print is engraved, which requires too much work including adjustment of setting. Some improvements have been engraved on the peripheral surface of the disk, but the actual situation is that they are not so much improved.

(2) Be careful when replacing the gold plate as it is heated.

(3) The gold plate with the markings engraved on the circumference of the disc rotates to find the necessary markings.
It is a limited group of characters such as alphanumeric characters, and it is not possible to include the kanji that you want to print or change the print size.

An object of the present invention is to use a printing wire of a wire dot printer or a printing element such as a typewriter, etc., without changing a gold stamp on which printing is changed when changing a printing pattern, and is equivalent to hot stamping. It is to provide a heat transfer film which enables the effect of.

[Means for Solving the Problems]

As a result of intensive studies conducted by the present inventors to solve the above-mentioned problems, when a printing wire or a printing element of a thermal transfer film pushes the film, electrode pins do not penetrate the film to form a recessed portion on the transfer target and The present invention has been completed by finding out that the problem can be solved by providing a heat-generating material that generates heat when a voltage is applied to the contact surface.

That is, the present invention includes 1) forming a transfer material layer including a thin metal layer, a pigment and / or a thin metal layer, which is engraved and transferred in a concave shape on a transfer target by pressing and heating on the upper surface of the base film, and the lower surface of the film. A thin metal layer having a thickness of 7 to 20 μm, which has strength and cushioning force when a concave portion is formed on a transfer object by contact pressure of a printer head pin and generates heat by applying a voltage between the head pin and The heat transfer film for concave marking, which is formed by forming 2), and 2) the heat transfer film for concave marking according to item 1, wherein the transfer target is a writing instrument shaft including a pencil and a ballpoint pen.

In the present invention, a transfer material layer that is concavely stamped and transferable is provided on the transfer surface by pressurizing and heating the upper surface of the base film. At this time, the pigment and / or colored metal layer is a pencil shaft or the like. The transfer material layer is such that a thin metal layer is placed on the base so that it protrudes from the concave surface, and the pressing force of the head pin for forming a concave surface on the pencil shaft etc. by pressing the head pin of the wire dot printer on the lower surface of the film. A heating material layer that withstands and buffers heat and that generates heat by applying a voltage is provided so that the transfer material layer is positioned substantially in contact with the transfer surface and is opposed to the thin metal layer of the heating material layer. Position the printing part consisting of the printing wire of the dot printer or the printing element of the typewriter, and set the thickness to 7-20 μm so that the printing wire does not penetrate the film.
By applying an appropriate voltage between the heat-generating material layer made of a thin metal layer and the printing portion to generate heat, a concave recess is formed on the transfer target, and the pigment and / or Alternatively, the fusion printing is performed so that the colored metal layer comes.

〔Example〕

1 to 2 show an embodiment of the present invention. First, FIG. 1 shows the principle structure of a thermal transfer film of the present invention in which a trademark is imprinted on a pencil 7 using a thermal transfer film 1 which is one of the gist of the present invention.

The thermal transfer film 1 is formed by applying pressure and heat to the upper surface of a base film 2 such as nylon or polyester to melt an ink made of carbon or a pigment mixed with a solvent or via an adhesive layer as a pigment and / or a colored metal layer. A transfer material layer 3 is provided on which a layer including a colored layer made of a metal and a thin metal layer formed of a metal such as aluminum by vapor deposition or the like can be transferred to a transfer surface. A heat generating material layer 4 is provided on the lower surface of the base film 2 by vapor-depositing a metal such as aluminum or laminating a metal foil.
Printing of a so-called wire dot printer in which the transfer material layer 3 is positioned substantially in contact with a transfer surface 7 such as a pencil 6 and the heat generating material layer 4 is printed on the paper surface via an ink ribbon. It faces a print head 8 having the same structure as the head. However, the pressing force of the printer needs to be strong enough to form a recess on the shaft of a pencil or the like through the film of the present invention. Multiple printing wires 5
Is advanced and retreated at high speed by an electromagnetic drive device,
Immediately after at least the tip of the printing wire 5 comes into contact with the heating material layer 4, an appropriate voltage is applied between the heating material layer 4 and the printing wire 5 to heat it by electric resistance. By the way, the heat generating material layer 4 is required to have a strength and a buffering force capable of forming a concave portion on the transfer target without penetrating the film when the electrode pin is pressed by being combined with the base film. A thickness of 7 to 20 microns is suitable for aluminum foil and the like.

Further, the heat generating material layer 4 needs strength and a cushioning effect so as to prevent the ribbon from penetrating through the pins even when the relative distance between the pins and the surface to be transferred is not equal and a pressure difference occurs. Is what you use.

Furthermore, if a voltage is applied before the printing wire 5 contacts the heating material layer 4, the printing wires 5 will spark to each other and the tip wear of the printing wire 5 will be large, which will affect the service life. It is desirable to control the voltage so that stable resistance heat generation can be performed immediately after the contact of 5 with the voltage. The polarity hanging on the heating material layer 4 and the printing wire 5 is not basically limited, but it is desirable to set the printing wire side to (-) from the viewpoint of electrolytic corrosion wear.

Further, according to this method, it becomes easy to use a driving device such as a typewriter as a printing element having a printing portion engraved in place of the printing wire. When a conventional gold stamp for hot stamping is used, it can be dealt with by applying a voltage between the heat generating material layer 4 and the gold stamp.

Examples of the constitution of the thermal transfer film of the present invention include (1) a release phase, a colored layer, and
The aluminum vapor deposition layer and the installation layer are formed, and the aluminum vapor deposition layer is formed on the lower surface.

(2) A release layer, a coloring layer, and an upper surface of the polyester film,
Formed aluminum deposition layer and installation layer, and laminated aluminum foil on the lower surface.

(3) On the upper surface of the polyester film, a peeling layer, a coloring layer,
Form aluminum deposition layer, installation layer, aluminum deposition phase on the lower surface,
A layer in which another heat generating material layer is appropriately formed.

Etc. are possible.

[Work]

The configuration of the present invention is as described above, and since the input method of printing and the mechanism for transferring the printing are basically the same as those of a normal wire dot printer or typewriter, description thereof will be omitted, and only the gist of the present invention will be described. explain.

First, the transfer material layer 3 is positioned substantially in contact with a transfer surface 7 such as a pencil 6, and a plurality of printing wires 5 positioned opposite to the heat generating material layer 4 are placed through the thermal transfer film of the present invention. It is moved back and forth by an electromagnetic drive corresponding to a print input sufficient to form a concave portion on a pencil shaft or the like.

Since the heating material layer 4 is applied with an appropriate voltage at the moment when the printing wire 5 is contact-pressurized, it generates heat by magnetic resistance heating. This heat is instantaneously transferred to the transfer material layer 3 to melt the transfer material layer 3 and cause the print pattern to be printed in the pressure recesses of the transfer surface 7 as the print head 8 scans.

In the case of a typewriter, a voltage is applied between the printing element inscribed in the printing portion and the heat generating material layer in the same manner as above. Also, in the case of hot stamping, a voltage is applied between the metal plate on which the printing portion is engraved and the heat generating material layer.

〔The invention's effect〕

The configuration and operation of the present invention are as described above, printing can be performed by the same input method as a personal computer, word processor, etc. Since there is no need to exchange a gold plate as in the conventional hot stamping, a small amount of various names can be entered. Can respond quickly. Further, since it is not necessary to heat the gold plate, it is possible to expect an effect that the gold plate can be easily replaced even when used in the conventional hot stamping.

[Brief description of drawings]

FIG. 1 is a principle structure diagram of the thermal transfer film of the present invention, and FIG. 2 is an explanatory diagram showing a printing principle of the thermal transfer device of the present invention. Further, FIG. 3 shows the structure of a thermal transfer film used for conventional hot stamping or the like. 1 ... Thermal transfer film, 2 ... Base film, 3 ...
… Transfer material layer, 4 …… Heating material layer, 5 …… Printing wire, 6
...... Pencil, 7 ...... Transfer surface, 8 ...... Print head, 9 ...
… Transfer material layer, 10 …… Base film, 11 …… Release layer, 12
…… Metal layer (colored layer) made of pigment or vapor deposition, 13 …… Aluminum vapor deposition layer, 14 …… Adhesive layer.

Continuation of the front page (56) Reference JP-A-1-99881 (JP, A) JP-A-1-93394 (JP, A) JP-A 64-78883 (JP, A) JP-A 64-20167 (JP , A) JP 64-9788 (JP, A) JP 64-9786 (JP, A) JP 63-290791 (JP, A) JP 63-139786 (JP, A) JP 63-84984 (JP, A) JP-A-63-81074 (JP, A)

Claims (2)

[Claims] 1. A thin metal layer, a pigment, and / or a metal layer which is engraved and transferred to a transfer target in a concave shape by pressurization and heating on the upper surface of a base film.
Alternatively, a transfer material layer including a thin metal layer is formed, which has strength and cushioning force when a concave portion is formed on a transfer target body by contact pressure of a printer head pin on the lower surface of the film, and the transfer material layer is provided between the head pin and the transfer head. A thermal transfer film for concave engraving, which is formed by forming a thin metal layer having a thickness of 7 to 20 μm that generates heat when a voltage is applied to the film. 2. The thermal transfer film for concave marking according to claim 1, wherein the material to be transferred is a writing instrument shaft including a pencil and a ballpoint pen.