JP4420516B2 - Heat transfer heating zone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat transfer heating zone.
[0002]
[Prior art]
A printed document (paper or film) drawn with transfer ink is pressed against the outer surface of the transferred object such as a mug, and the outer surface of the transferred object is heated from the outer surface to draw characters and designs drawn on the printed document. It has been transferred to. As a heating device in this case, a surface heating element made of silicon rubber in which a heating wire is embedded is attached to the inner surface of a semi-cylindrical metal thin plate having a spring property, and silicon is applied to the surface of the surface heating element. There is known a heating zone for thermal transfer in which a buffer made of sponge or the like is attached.
[0003]
FIG. 2 shows a cross section of such a heat transfer heating zone. In this figure, 1 is a semi-cylindrical tightening having a spring property made of stainless steel having a thickness of about 0.3 mm. 2 is a surface heating element made of silicon rubber in which a heating wire (not shown) is embedded, 3 is a surface buffer body made of silicon sponge, etc., and 4 is a mug of an object to be transferred. The flange portions 1a and 1b are bent outward at both ends in the circumferential direction of the metal thin plate 1, and the flange portions 1a and 1b are pressed in the direction of narrowing the interval to be fastened to the mug 4. The surface heating element 2 is attached over the entire inner surface except for the collar portions 1 a and 1 b of the metal thin plate 1, and the buffer body 3 is attached over the entire surface of the surface heating element 2.
[0004]
FIG. 3 shows a press machine 5 as an example in the case where thermal transfer is performed using the thus configured heat transfer heating zone. In FIG. 3, 6 is a frame, 7 is a movable base, 8 is a fixed base, 9 is a toggle mechanism and 10 is an operation lever. In the press machine 5, the fixed base 8 and the toggle mechanism 9 are fixed to the frame 6, and the movable base 7 is arranged at a position facing the fixed base 8 and connected to the toggle mechanism 9.
[0005]
At the time of thermal transfer, a heat transfer heating zone is attached so as to surround the outer peripheral surface of the mug 4 with the photographic paper in contact with the outer peripheral surface, and the collar portion 1b of the metal thin plate 1 of the heat transfer heating zone is fixed to the press machine 5 8, the collar 1 a of the metal thin plate 1 is placed in contact with the surface of the movable table 7, the operation lever 10 is operated to lower the movable table 7, and the heat transfer heating zone is fastened to the mug 4. Then, the surface heating element 2 is heated and heated by a power source (not shown), and the image of the photographic paper is transferred to the surface of the mug 4 by the heat. After the transfer is completed, the operation lever 10 is operated to raise the movable base 7 to remove the heat transfer heating zone from the press 5 and take out the mug 4 from the heat transfer heating zone.
[0006]
[Problems to be solved by the invention]
By the way, there are a transfer object such as a mug having a different height dimension and a different outer diameter. In the case where the height dimension is shorter than the width of the heat transfer heating zone, the corner of the object to be transferred, indicated by reference numeral 11 in FIG. 3, is located at the back of the heat transfer heating zone. Stress is applied to the exothermic wire that digs into the body, and the exothermic wire is broken while repeatedly pressurized, and even when the outer diameter is small, the heat transfer process indicated by reference numeral 12 in FIG. Even when the tropics are tightened, there is a part that does not come into contact with the transferred object, and the heating wire may break similarly at that part, and the life of the heating zone for thermal transfer depends on the height and outer diameter of the transferred object. There was a problem that the life was not stable.
[0007]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a heating zone for thermal transfer that can provide a stable life regardless of the height dimension and outer diameter of the transfer object.
[0008]
[Means for Solving the Problems]
In the present invention, a surface heating element and a surface buffer made of silicon rubber in which a heating wire is embedded on one surface of a metal thin plate are sequentially attached, and the surface is applied to the outer surface of a printed document in contact with the surface of the transfer object. In a heating zone for thermal transfer formed by abutting the surface of a buffer body and fastened to the transfer object by the metal thin plate, a metal made of metal that disperses stress applied to the surface heating element between the surface heating element and the surface buffer. It is characterized by inserting a thin plate.
[0009]
In the present invention, since the metal thin plate that disperses the stress applied to the surface heating element is inserted between the surface heating element and the surface buffer, the stress applied to the local portion of the surface heating element is concentrated on the metal thin plate. Accordingly , disconnection of the heating wire embedded in the surface heating element is always suppressed regardless of the height dimension and outer diameter of the transfer object . As a result, a heat transfer heating zone having a stable life that is not affected by the height or outer diameter of the transfer object can be obtained .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a heating zone for thermal transfer according to an embodiment of the present invention. In FIG. 1, the same reference numerals are given to the portions corresponding to the conventional one shown in FIG.
[0011]
In FIG. 1, 1 is a semi-cylindrical metal thin plate with a spring property formed of stainless steel having a thickness of about 0.3 mm, and 2 is silicon with a heating wire (not shown) embedded therein. A surface heating element made of rubber, 3 is a surface buffer made of silicon sponge or the like for closely adhering to the unevenness of an object to be transferred (for example, a mug), 13 is a metal thin plate for protecting the surface heating element, and 14 is a heat insulator. . The metal thin plate 13 for protecting the surface heating element is substantially the same as the metal thin plate 1 for fastening, and has a semi-cylindrical shape having a smaller diameter than the metal thin plate 1 for fastening. It should be noted that it is advantageous to use a material having excellent heat conduction as the material for the metal thin plate 13 for protecting the surface heating element, since the heat uniformity becomes high.
[0012]
The flange portions 1a and 1b are bent outwardly at both ends in the circumferential direction of the metal thin plate 1 in the same manner as in the prior art, and are formed on the entire inner surface except for the flange portions 1a and 1b of the metal thin plate 1. The surface heating element 2 is pasted across. A metal thin plate 13 for protecting the surface heating element is attached over the entire surface of the surface heating element 2, and is attached over the entire surface of the metal thin plate 13 for protecting the surface heating element. In this embodiment, a heat insulator is stuck across the entire back surface of the metal thin plate 1 for fastening.
[0013]
The thermal transfer using the thermal transfer heating zone configured as described above is the same as that of the prior art described with reference to FIG. In this thermal transfer, when transferring to a transfer object shorter than the width of the heat transfer heating zone, even if the corner of the transfer object indicated by reference numeral 11 in FIG. The stress that bites into the surface heating element by the portion is received and dispersed by the metal thin plate 13 for protecting the surface heating element. Further, in the case of a transfer object having a small outer diameter, even if the heat transfer heating zone indicated by reference numeral 12 in FIG. 4 is tightened, a portion that does not come into contact with the transfer object is generated. The metal thin plate 13 is received and dispersed. Therefore, the heating wire embedded in the surface heating element 2 is not subjected to repeated stress intensively.
[0014]
【The invention's effect】
As described in detail above, according to the present invention, the heating wire embedded in the surface heating element is not subjected to repeated stress in a concentrated manner, so that it depends on the height dimension and outer diameter of the transfer object. A stable life not obtained is obtained. Moreover, when a heat insulator is stuck over the entire back surface of the metal thin plate for tightening, the heat retaining effect on the inside can be enhanced and the safety by heating can be enhanced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a thermal transfer heating zone according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a conventional heat transfer heating zone.
FIG. 3 is a perspective view of a heat transfer heating zone press.
FIG. 4 is a cross-sectional view showing the operation of a heat transfer heating zone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal thin plate 1a for tightening, 1b Collar part 2 Surface heating element 3 Surface buffer body 4 Transfer object (mug cup)
5 Press machine 13 Metal sheet 14 for surface heating element protection Heat insulator

Claims (2)

A surface heating element made of silicon rubber with a heating wire embedded in one surface of a metal thin plate and a surface buffer are sequentially attached, and the surface of the surface buffer is attached to the outer surface of the printed document in contact with the surface of the transfer object. In the heating zone for thermal transfer, which is fastened to the transfer object by the metal thin plate, a metal thin plate that disperses the stress applied to the surface heating element is inserted between the surface heating element and the surface buffer. A heating zone for thermal transfer. The heating zone for thermal transfer according to claim 1, wherein the outer surface of the metal thin plate is surrounded by a heat insulator.

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