JPH02110886A - Transfer method - Google Patents

Abstract

PURPOSE:To transfer a pattern to a material to be transferred with a high positional precision by providing a step on the surface of the material to be transferred to prescribe the end part of the pattern. CONSTITUTION:A step 5 is provided on the surface of a cassette half 1, to which the pattern should be transferred by a heat transfer system, in a position A desired as the end part of the pattern to be transferred, and that is, a pattern transfer face and a non-transfer face are formed on the higher face and the lower face respectively with the step 5 as the boundary. Consequently, a recessed part is generated in a part, which faces the higher face of the cassette half 1, on a transfer roll by a pressure, that is, the pressure of the transfer roll 2 is sufficiently applied to the higher face of the cassette half 1 but is scarecely applied to the lower face. Thus, a pattern 4 on a transfer film 3 is transferred to only the higher face of the cassette half 1 with the step 5 as boundary but is not transferred to the lower face at all. Thus, the end pat of the pattern is distinctly prescribed in the accurate position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transfer method, particularly to a transfer method suitable for application to surface decoration of tape cassettes.

(Renovation of the invention) The present invention provides a transfer method in which a pattern is transferred to an object to be transferred, such as a tape cassette, using a transfer body such as a transfer roller. By cutting off the edges of the transfer material, the pattern can be accurately transferred to a predetermined portion of the transfer object.

[Conventional technology]

In recent years, as one of the surface decoration methods for various molded products,
Thermal transfer method is widely practiced. That is, in this thermal transfer method, a pattern printed on a transfer film is transferred by being brought into pressure contact with the surface of a molded product using a heated transfer roller.

Since this thermal transfer method has the advantage that molded products can be easily decorated with desired patterns, the practical application of surface decoration using this thermal transfer method has recently been considered for magnetic recording tape cassettes as well.

In this tape cassette, decoration is often applied not to the entire surface of the cassette but only to a specific part due to the design. In this way, when trying to transfer a pattern only to a specific part of the cassette surface, the conventional method is to print a pattern on a transfer film with an area corresponding to the decorative surface of the tape cassette.
The position of this pattern is made to match the decorative part on the surface of the tape cassette so that it is transferred.

[Problems to be Solved by the Invention] However, in this conventional transfer method, the position of the transferred pattern changes depending on the printing accuracy of the pattern on the transfer film, the positional accuracy during transfer, etc. It is difficult to precisely and unambiguously define a predetermined position.

A possible solution to this problem is to align the edge of the transfer roller with the edge of the transfer decorative surface of the tape cassette and use the edge of the transfer roller to cut off the edge of the pattern, but in this case Since the transfer roller expands due to heat, the dimensions of the transfer roller are unstable depending on the temperature, so good accuracy cannot be expected.

The present invention has been made in view of the above, and an object of the present invention is to provide a transfer method that allows good transfer regardless of the accuracy of the transfer film or transfer device.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention provides a transfer method for thermally transferring a pattern onto an object to be transferred using a transfer roller.
A step is provided on the surface of the object to be transferred, and the edge of the pattern to be transferred is separated by this step.

[Effect]

By providing a step on the surface of the transferred object in this way,
With this step as a boundary, the pressure of the transfer roller acts sufficiently on the high step surface and the pattern is transferred well, and the pressure of the transfer roller hardly acts on the high step surface of the paper, so the pattern is not transferred. As a result, the edge of the picture at the stepped portion is defined to be 6g brighter.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, (1) is a cassette half as a transferred object;
(2) shows a transfer roller as a transfer body, (3) shows a transfer film, and (4) shows a pattern printed on this transfer film (3), and the transfer roller (2) has a circular surface made of silicone rubber. The transfer roller (2) is heated to the required temperature and the transfer film (
3), put the pattern (4) on cassette 2, -f (1)
) is pressed against a predetermined portion of the surface of the paper to perform thermal transfer.

A step (5) is provided on the surface of the cassette half (1) on which the pattern is transferred by such a thermal transfer system at a position A that is desirable as the end of the pattern to be transferred.
That is, with this level difference (5) as a boundary, the pattern transfer surface becomes a high level side,
The non-transfer surface is formed on the lower step surface.

The difference in height of this step (5) is preferably 0.2 mm or more, and the angle with the pattern transfer surface is preferably 45° or more.

By providing each step (5) on the cassette half (1) in this way, the transfer roller (2) has a dent in the portion that contacts the high step surface of the cassette half (1) due to pressure, as shown in Fig. 1. In other words, the pressure of the transfer roller (2) is sufficiently applied to the high stage surface of the cassette half (1), but hardly applied to the low stage surface.Therefore, the pattern (4) on the transfer film (3) is It is transferred only to the high step side of the skein, square, and half (1) with the step (5) as the boundary, and the -shikashi step number is not transferred at all (see Figure 2).

In this way, the end of the pattern (4) is separated at the step (5), so that the end of the pattern can always be clearly defined at an accurate position.

Therefore, regardless of the printing accuracy of the pattern (4) on the transfer film (3), the positional accuracy of the transfer film (3) during transfer, or the dimensional accuracy of the transfer roller (2), the cassette has good pattern positional accuracy. It is possible to obtain a tape cassette that is finished in half and has a beautiful appearance.

Above, the case where the transfer method of the present invention is applied to the decoration of the surface of a tape cassette has been described, but it goes without saying that the method of the present invention can be widely applied to the surface decoration of various molded products.

[Effects of the Invention] As described above, according to the transfer method of the present invention, the edges of the transferred pattern are defined by the steps provided on the surface of the transferred object, so it depends on the accuracy of the transfer film and the transfer device. It is possible to transfer the pattern onto the transferred object with good positional accuracy without any trouble.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the transfer state by the method of the present invention, and FIG.
The figure is a sectional view showing the state after the transfer, and FIG. 3 is a plan view of the cassette shelf to which the pattern is transferred. In the figure, (1) is Kase Soto/S-fu as the transferred object;
(2) is a transfer roller as a transfer body, (3) is a transfer film, (4) is a pattern, and (5) is a step. Agent Hidemori Matsukuma, Sadado Ito l-・--One skein.../To-7 2--Transfer roller 3--Transfer film 4--, Hinoki-kuku 5,-Step 1 Figure 1 Figure 3Figure 2

Claims (1)

[Scope of Claims] A transfer method for transferring a pattern onto a transfer object using a transfer body, characterized in that a step is provided on the surface of the transfer object to define the edge of the pattern. .