JP2590068Y2 - Heat transfer sheet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer sheet used for thermal transfer recording means, and more particularly to a heat transfer sheet which can be attached to various articles after image transfer. 2. Description of the Related Art In recent years, problems to be solved by
A thermal transfer recording method in which a thermal transfer sheet is heated by a thermal head or the like in which heat generation is controlled by an electric signal, and a sublimable dye in a color material layer of the thermal transfer sheet is transferred onto a thermal transfer sheet to record an image corresponding to image information. Is widely used, and in the heat transfer sheet used in this recording method, not only can a transferred image be recorded, but also the sheet after the transfer recording can be freely attached to various articles, a so-called label type. A heat transfer sheet is desired. The present invention has been made in view of the above problems, and has as its object to provide a heat-transferable sheet that can easily attach a sheet portion divided along a pattern of the transferred image to various articles after recording a transferred image. . According to the present invention, in combination with a thermal transfer sheet, a transfer image is formed by transferring a dye in a color material layer of the thermal transfer sheet to an image receiving layer by heating a thermal head. A release sheet, an adhesive layer,
A sheet base material, an image receiving layer is sequentially laminated, and the support portion composed of the release sheet and the release layer and the adhesive layer, the image receiving sheet portion composed of the sheet substrate and the image receiving layer are peelable, and The heat transfer sheet is characterized in that a half-cut process is performed on a predetermined portion of the image receiving sheet portion, and a slip layer made of a vinyl resin is provided on the back surface of the release sheet. An embodiment of the present invention will be described below with reference to the drawings. The heat transfer sheet 1 of the present invention has a laminated structure in which a release layer 3, an adhesive layer 4, a sheet substrate 5, and an image receiving layer 6 are sequentially laminated on a release sheet 2 as shown in FIG. is there. Reference numeral 7 in the drawing indicates a score line obtained by the half-cut processing. The heat transfer sheet 1 according to the present invention comprises a support portion 8 comprising the release sheet 2 and the release layer 3 and an adhesive layer 4.
It has a structure that can be peeled off between the image receiving sheet portion 9 composed of the sheet substrate 5 and the image receiving layer 6, and a part or all of the image receiving sheet portion 9 is cut along the cut line 7 as shown in FIG. It can be separated and easily detached from the support 8. The image receiving sheet portion 9 is a portion which is detached from the support portion 8 and adhered to various articles after recording the transferred image. The image receiving layer 6 is provided on the sheet substrate 5 and the back surface of the substrate 5 is provided. Is provided with a pressure-sensitive adhesive layer 4 which enables the attachment to the surface of the desired article. As the sheet substrate 5, a polyethylene terephthalate film is most preferably used, but a resin film made of hard vinyl chloride, acryl, vinylidene chloride, polyolefin or the like can also be used. The sheet base 5 may be a transparent one made of the above-mentioned material, or a light-shielding one in which a white pigment such as titanium, calcium carbonate, zinc oxide or the like is kneaded. Further, a light-shielding sheet such as synthetic paper or natural paper can be used as the sheet base 5. The thickness of the substrate 5 is 10 to 200 μm. The image receiving layer 6 is a layer for receiving a dye transferred from the thermal transfer sheet by heating during transfer recording, and its material is conventionally used for forming an image receiving layer of this type of thermal transfer sheet. Any material can be used as long as the material is, for example, a saturated polyester resin, a polyacrylate resin, a vinyl chloride-vinyl acetate copolymer, a polystyrene resin, a polyamide resin, and the like, and these are used alone or in combination. . Further, a release agent layer can be provided on the surface of the image receiving layer 6 for imparting good releasability from the thermal transfer sheet. The release agent layer can be formed by including a release agent in the case of a release agent having good compatibility with the above-mentioned material for forming an image receiving layer. It can be formed by coating thinly on the layer surface. As the release agent, a silicone oil (for example, a combination of an epoxy-modified silicone and an amino-modified silicone), a fluorine-based or phosphate-based surfactant, or the like can be used. The material of the adhesive layer 4 includes polyacrylate, acrylic copolymer, natural rubber, synthetic rubber,
Examples include petroleum resins and block copolymers such as SIS and SBR. Also, if necessary, an adhesive reinforcing agent for the adhesive,
Plasticizers, fillers and the like can be added. On the other hand, the support portion 8 provided below the image receiving sheet portion 9 includes the release sheet 2 and the release layer 3 formed on the sheet 2. As the release sheet 2, a processed paper in which cellulose fiber paper is impregnated with a synthetic resin or rubber, coated or internally added can be used. The release layer 3 is mainly composed of polymethylsiloxane acid or the like so that the release sheet 2 can be easily released from the image receiving sheet portion 9 (specifically, between the adhesive layer 4 and the release layer 3). Formed using a silicone-based release agent or polyolefin. In manufacturing the heat transfer sheet 1 of the present invention having the above-described laminated structure, first, the release sheet 2 is used.
The support portion 8 is formed by providing the release layer 3 thereon, the image receiving layer 6 is separately provided on the sheet base 5, and the adhesive layer 4 is provided on the lower surface of the base 5 to form the image receiving sheet portion 9. Thereafter, the release layer 3 and the adhesive layer 4 are opposed to each other so that the support 8 and the image receiving sheet 9
Is laminated. As shown in FIG. 1, the thermal transfer sheet 1 of the present invention has a score line 7 penetrating all the layers constituting the sheet portion 9 at a predetermined position of the image receiving sheet portion 9 in the layer structure having a laminated structure. The provided half-cut processing is performed. In this half-cutting process, the image receiving sheet portion 9 is sectioned by providing the cut lines 7 and a desired transfer image is recorded in the divided area. Thereafter, the cut sheet 7 is surrounded by the cut lines 7 as shown in FIG. The purpose is to enable the image receiving sheet section 9 in the section to be accurately and easily separated from the support section 8. Therefore, the cut line 7 is provided at a predetermined position of the image receiving sheet portion 9 according to the transferred image to be recorded, and the number of cut lines, the type of the line, the shape of the drawn line, and the like are appropriately set. In addition, the half-cut processing is usually performed by controlling the depth of penetration by using a commercially available punching machine or the like after laminating the transfer sheet. The heat transfer sheet 1 of the present invention comprises a sheet substrate 5
An intermediate layer having a cushioning property or the like can be provided between the image receiving layer 6 and the image receiving layer 6. When this intermediate layer is provided, an image corresponding to image information with little noise can be transferred and recorded with good reproducibility. Examples of the material forming the intermediate layer include urethane resin, acrylic resin, ethylene-based resin, butadiene rubber, and epoxy resin. The thickness of the intermediate layer is preferably 2 to 20 μm. The thermal transfer sheet 1 of the present invention can be provided with a writing processing layer 10 at a predetermined position on the image receiving layer 6 as shown in FIG. The writing processing layer 10 can be used for writing with a pencil, a ball-point pen, a fountain pen, and other markings. By providing the layer 10, conventionally, since the image receiving layer 6 is usually a resin film surface, What could not be sealed or stamped was overcome, and comments and the like can be freely described on the layer. The writing layer 10 is formed using a mixture of a resin such as hydroxyethylcellulose, polyvinyl acetate, styrene-maleic acid copolymer, and ethylene-vinyl acetate copolymer mixed with calcium carbonate, silica, clay and the like. It is also possible to provide a detection mark on the heat transfer sheet of the present invention. The detection mark is extremely convenient when positioning the thermal transfer sheet and the heat transfer target sheet. For example, a detection mark detectable by the photoelectric tube detecting device can be provided on the back surface of the peeling sheet 2 by printing or the like. By providing the detection marks, when performing the overlap transfer using the thermal transfer sheet of each color, the alignment can be accurately performed, and as a result, a color image with good reproducibility can be obtained. Further, the heat transfer sheet of the present invention can contain an antistatic agent on the back surface of the release sheet 2. By incorporating an antistatic agent, the sheets can be more smoothly slid and the effect of preventing the transfer of the heat transfer sheet to dust and the like can be obtained. The antistatic agent may be contained in the release sheet 2 or the image receiving layer 6, or may be provided as an antistatic agent layer on the back surface of the release sheet 2 or the like. Is preferred. In actual use of the heat transfer sheet 1 of the present invention having the above configuration, the dye in the color material layer of the heat transfer sheet is combined with the heat transfer sheet by heating a thermal head or the like. 1 to form a transfer image on the heat-transferred sheet 1, and thereafter, as shown in FIG. 8 and then, as shown in FIG.
The image receiving sheet 9 having a predetermined shape, on which the transfer image 11 is formed, is completely adhered to a desired adherend 12. The adherend 12 may be any article as long as it can be attached. As described above, since the heat transfer sheet of the present invention has been subjected to half-cut processing at a predetermined portion of the image receiving sheet portion, the heat-transfer sheet has an area (section) formed by a cut line formed by this processing. When a desired transfer image is formed, the image receiving sheet portion can be accurately and easily separated from the support portion along the cut line, and as a result, the image receiving sheet portion on which the transfer image of the desired pattern is recorded can be removed. An excellent effect can be obtained in that the image receiving sheet can be obtained by being divided from the heat transfer sheet and the detached image receiving sheet portion can be easily attached to various articles. In the case where an image is recorded only on a part of the heat transfer sheet and no image is formed in a margin thereof, a half-cut process is performed on a boundary between the image formation location and the margin. (That is, a cut line is provided.)
This has the advantage that after image recording, only the image-recorded portion of the heat-transferred sheet can be separated from the support and stored, and the storage space can be reduced. Further, the thermal transfer sheet of the present invention is roughly divided into a structure comprising a support portion and an image receiving sheet portion. Therefore, at the time of image recording, the thermal transfer sheet is reinforced by the support portion because the mechanical strength and the like are reinforced by the printer portion. Is good, and a slip layer is provided on the back surface of the release sheet.
The transfer between the sheets becomes smoother
The sheet feed when recording is good. On the other hand, after image recording, the sheet is detached from the support and is attached to the article in a state of only the image receiving sheet part having a thinner thickness than the state having the support part. Even if the body has a curved surface, it can be stuck to the surface).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing one embodiment of a heat transfer sheet of the present invention. FIG. 2 is a longitudinal sectional view showing a state in which an image receiving sheet portion is separated from a support portion of the heat transfer sheet of the present invention. FIG. 3 is a longitudinal sectional view showing a state in which a part of the image receiving sheet portion of the heat transfer sheet of the present invention is stuck to an object to be stuck. [Description of Signs] 1 Thermal transfer sheet 2 Release sheet 3 Release layer 4 Adhesive layer 5 Sheet substrate 6 Image receiving layer 8 Support section 9 Image receiving sheet section

Claims (1)

(57) [Rules for requesting registration of utility model] Combined with a thermal transfer sheet, a thermal transfer sheet in which a transfer image is formed by transfer of a dye in a color material layer of the thermal transfer sheet to an image receiving layer by heating of a thermal head , wherein a synthetic resin or rubber is formed on cellulose fiber paper. Including
A release layer, an adhesive layer, a sheet substrate, and an image receiving layer are sequentially laminated on a release sheet made of processed paper soaked / coated or internally added, and a support portion comprising the release sheet and the release layer and It is peelable between an adhesive layer, a sheet base material, and an image receiving sheet portion including an image receiving layer, and a predetermined portion of the image receiving sheet portion is subjected to a half-cut treatment, and a back surface of the release sheet is formed of a vinyl resin. A heat-transferable sheet comprising a heat-resistant layer.