JP2003005651A - Dye thermal transfer receiving sheet - Google Patents

Abstract

(57) [Problem] To provide a label-type dye heat transfer receiving sheet having a half-cut portion provided with a bridge portion, so that even if the label is strongly peeled off diagonally, the label can be peeled cleanly without tearing. SOLUTION: A release treatment layer 2 is provided on one surface of a release sheet substrate 1.
Member A provided with the dye receiving layer 4 on one side of the receiving sheet substrate 3 and the adhesive layer 5 provided on the other side of the receiving sheet substrate 3 are provided with the release treatment layer 2 of the separator member A and the receiving sheet. In the dye thermal transfer receiving sheet, which is releasably bonded to the pressure-sensitive adhesive layer 5 of the member B, a half-cut portion H is formed from the receiving sheet member B side, and the receiving sheet member B is attached to the label L and the frame F. And a bridge portion C is formed on at least a part of the half cut portion H, and the width of the bridge portion C is set to 0.05 to 0.15 mm.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal dye transfer receiving sheet. More specifically, after image transfer,
The present invention relates to a dye heat transfer receiving sheet that can be attached to various objects and does not cause running failure during printing. [0002] In recent years, a dye thermal transfer printer capable of forming a clear full-color image has attracted attention. In this dye thermal transfer printer, the thermal transfer dye layer of the dye ink sheet is superimposed on the dye receiving layer containing the dye-dyeable resin of the dye thermal transfer receiving sheet, and the thermal transfer dye according to image information is supplied by heat supplied from a thermal head or the like. The dye in the layer is transferred to the dye-receiving layer by a predetermined concentration to form an image.
When forming a full-color image, ink sheets corresponding to three colors of yellow, magenta, and cyan, or four colors including black are used as dye ink sheets, and the ink sheets of these colors are sequentially transferred. Done. In recent years, as a dye thermal transfer receiving sheet used in the above-described dye thermal transfer printer, an adhesive layer is provided on the back surface so that the sheet after an image is formed can be freely attached to various articles. Label-type dye thermal transfer receiving sheets provided with such methods have come to be widely used. [0004] Label type dye thermal transfer receiving sheets are:
As shown in FIG. 2A, a separator member A in which a release treatment layer 22 is provided on one surface of a release sheet substrate 21, a dye receiving layer 24 on one surface of a receiving sheet substrate 23, and an adhesive layer on the other surface. 2
5 has a structure in which the release treatment layer 22 of the separator member A and the pressure-sensitive adhesive layer 25 of the receptor sheet member B are releasably bonded to each other. At the time of use, as shown in FIG.
The receiving sheet member B is peeled off from the base material, and the peeled receiving sheet member B is attached to various articles by the adhesive layer 25. Important characteristics required of such a label-type dye thermal transfer receiving sheet are that the edges of the label do not turn up during storage, handling, and transfer, that the image density is high, and that curl due to heat during transfer is high. It is possible to perform good transfer recording with little occurrence, and receive sheet member B and separator member A on which images are formed after transfer image recording.
Are easily and accurately separated from each other. For this reason, as a label-type dye thermal transfer receiving sheet, the edge of the label is not turned up, and the separator member A and the receiving sheet member B are easily separated from each other as shown in FIG. As shown in the figure, the dye heat transfer receiving sheet is half-cut from the receiving sheet member B side, and the half-cut portion H (half-cut portion width Hw is usually 0.1 to 0.8 mm) forms a frame F and a label L. (Japanese Patent Application Laid-Open No. 64-82988).
Publication). In this case, the tip of the half-cut portion H is
(B) As shown in the (xx sectional view), it reaches the bottom of the pressure-sensitive adhesive layer 25, but may also reach the boundary surface between the receiving sheet substrate 23 and the pressure-sensitive adhesive layer 25. However, the above-described dye thermal transfer receiving sheet travels due to the fact that the half-cut receiving sheet member B is peeled off at the time of image formation and adheres to an ink ribbon, etc., with the speeding up and miniaturization of the dye thermal transfer printer. There is a new problem of causing defects. For this reason, as shown in FIG. 4, a portion (bridge portion C) where half-cut is not performed is provided in a part of the half-cut portion H, thereby connecting the frame F and the label L to prevent running failure. Is prevented from occurring. [0009] However, if the width W of the bridge portion C is too wide, if the label is peeled off strongly from an oblique direction, the bridge portion C will tear to the label portion L, and conversely. If the width W of the bridge portion C is too small, the half-cut receiving sheet member is peeled off during image formation, and the peeled pieces are stuck to the ink ribbon, causing a problem in that the dye thermal transfer receiving sheet runs poorly. An object of the present invention is to solve the above-mentioned problems of the prior art. In a label-type dye heat transfer receiving sheet having a half cut portion H provided with a bridge portion C, the label is moved in an oblique direction. It is an object of the present invention to allow the label L to be cleanly peeled off without being torn even if it is strongly peeled off. The present inventor has found that the above object can be achieved by regulating the width of the bridge portion to a specific range of 0.05 to 0.15 mm. Was completed. That is, the present invention provides a separator member in which a release treatment layer is provided on one side of a release sheet substrate, and a receiving sheet member in which a dye receiving layer and an adhesive layer are provided on one side of a receiving sheet substrate. In a dye heat transfer receiving sheet, which is releasably bonded between a release treatment layer of a separator member and an adhesive layer of a receiving sheet member, a half cut portion is formed from the receiving sheet member side, and the half cut portion is formed. The receiving sheet member is divided into a label and a frame by the cut portion, and a bridge portion is formed in at least a part of the half cut portion, and the width of the bridge portion is 0.05 to 0.15 m.
m, provided is a dye thermal transfer receiving sheet. Hereinafter, the present invention will be described in detail with reference to the drawings. The thermal dye transfer receiving sheet of the present invention is shown in FIG.
(A) As shown in (cross-sectional view), a separator member A having a release treatment layer 2 provided on one surface of a release sheet substrate 1, a dye receiving layer 4 on one surface of a receiving sheet substrate 3, and an adhesive on the other surface. The receiving sheet member B provided with the agent layer 5 has a structure in which the release treatment layer 2 of the separator member A and the pressure-sensitive adhesive layer 5 of the receiving sheet member B are adhered to each other in a releasable manner. Here, the dye thermal transfer receiving sheet is formed with a half-cut portion H from the receiving sheet member B side so that the receiving sheet member B can be easily separated from the separator member A. The receiving sheet member B is divided into a label L and a frame F by the half cut portion H. In this case, the depth of the half cut portion H can be appropriately set as needed. In the present invention, FIG. 1B (top view)
As shown in FIG. 5, a bridge portion C is formed at least in a part of the half cut portion H, and the width W of the bridge portion C is 0.05 to 0.15 mm, preferably 0.04 to 0.1 mm.
It is 2 mm. Thus, in the label-type dye heat transfer receiving sheet having the half cut portion H having the bridge portion C, even if the label is strongly peeled off from the oblique direction, the label L can be peeled off without tearing. As described above, the dye thermal transfer receiving sheet of the present invention is characterized in that the width of the bridge portion provided in the half-cut portion is set in a specific range. The thickness of the sheet substrate, release processing layer, receiving sheet substrate, image receiving layer, pressure-sensitive adhesive layer, etc., the type of material used, the width and depth of the half-cut portion, etc.) can be determined as appropriate. it can. The dye thermal transfer receiving sheet of the present invention is used for producing a conventional label type dye thermal transfer receiving sheet.
It can be manufactured by using a blade capable of forming a bridge portion having a predetermined width as a blade of a cutter used when forming a half cut portion. The present invention will be described below in more detail with reference to examples. A commercially available dye thermal transfer receiving sheet (VPM-3)
(0WSA, manufactured by Sony Corporation) was processed into a label surrounded by a frame by half-cutting. At that time, the width of the bridge portion was set to a dimension as shown in Table 1. An image was formed on the dye thermal transfer receiving sheet using a sublimation video printer (CVP-P88, manufactured by Sony Corporation). Then, a simple test of peeling the label by hand after image formation was performed, and a label tear test and a running test were evaluated according to evaluation criteria. [Tear Test Evaluation Criteria] Rank Criteria ○: No label tear at all, good: △: Slow peeling does not cause tearing, but strong tearing often causes label tearing ×: Label tearing even if peeled slowly When it occurs [Running test evaluation criteria] Rank standard ○: When there is no running failure Δ: When there is a slight occurrence of running failure ×: When there is a high frequency of running failure [Table 1] Bridge part width (mm) Label tear Running property Example 1 0.05 ○ ○ 2 0.10 ○ ○ 3 0.15 ○ ○ Comparative Example 1 0.04 ○ △ 2 0.02 ○ × 3 0.16 △ ○ 4 0.20 × ○ From Table 1, the width of the bridge portion is 0.05 to
The dye thermal transfer receiving sheet of each example having a diameter of 0.15 mm has no label tear and has excellent running properties, indicating that it is a very preferable label type dye thermal transfer receiving sheet. On the other hand, the dye thermal transfer receiving sheets of Comparative Examples 1 and 2 in which the width of the bridge portion is less than 0.05 mm cause a problem in running properties, and the width of the bridge portion is more than 0.15 mm. Dye thermal transfer receiving sheets 3 and 4 are:
It can be seen that there is a problem with label tearing. According to the present invention, in a label-type dye heat transfer receiving sheet having a half-cut portion provided with a bridge portion, even if the label is peeled off strongly from an oblique direction, the label L is not torn and clean. It can be peeled off. Therefore, the running property during printing on the printer is improved. Moreover, since the half-cut portion is provided, the label can be easily peeled off by hand after printing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view (FIG. 1 (a)) and a top view (FIG. 1 (b)) of a dye thermal transfer receiving sheet of the present invention. FIG. 2 is a sectional view of the conventional dye thermal transfer receiving sheet (FIG. 2A) and an explanatory view of use (FIG. 2B). FIG. 3 is a top view of the conventional dye thermal transfer receiving sheet (FIG. 3A) and a cross-sectional view thereof along the line xx (FIG. 3B). FIG. 4 is an enlarged view of a bridge section of a half cut section. [Description of Signs] 1 release sheet substrate, 2 release treatment layer, 3 receiving sheet substrate, 4 dye receiving layer, 5 adhesive layer, A separator member, B receiving sheet member, L label, F frame,
H Width of half cut, C bridge, W bridge

Claims (1)

Claims: 1. A separator member provided with a release treatment layer on one surface of a release sheet substrate, and a receptor member provided with a dye receiving layer on one surface and an adhesive layer on the other surface of a receiving sheet substrate. In the dye heat transfer receiving sheet in which the sheet member and the release treatment layer of the separator member and the pressure-sensitive adhesive layer of the receiving sheet member are peelably adhered to each other, a half-cut portion is formed from the receiving sheet member side, Dye thermal transfer wherein the receiving sheet member is divided into a label and a frame by the half cut portion, and a bridge portion is formed in at least a part of the half cut portion, and the width of the bridge portion is 0.05 to 0.15 mm. Receiving sheet.