JPH10140105A - Self-adhesive sheet for image forming apparatus and method for transporting self-adhesive sheet for image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the lifting of an arbitrarily shaped seal in image formation and the troubles in an image deforming apparatus by forming tearable discontinuous cut lines together with continuos cut lines through the upper paper or both of the upper part and a self-adhesive layer. SOLUTION: In a self-adhesive sheet for an image forming apparatus which comprises the upper paper, a self-adhesive layer, and a release paper and in which cut lines for separating arbitrarily shaped seals off has been formed through the upper paper or both of the upper paper and the self-adhesive layer, both continuos cut lines 41 and discontinuous cut lines 42 are formed in a mixed state. For instance, among cut lines for separating a seal 6 in the figure, the under-side cut line is formed in a broken line 42, and after the image formation, seal 6 is peeled off starting with the upper side and finally cutting off along the broken line, thus enabling the seal 6 with a formed image to be obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive sheet provided with a release paper used in an image forming apparatus such as a printer.

[0002]

2. Description of the Related Art A pressure-sensitive adhesive sheet provided with a release paper is generally composed of a top paper 1, a pressure-sensitive adhesive layer 2, and a release paper 3, as shown in FIG. letter,
An image is formed, the release paper is then peeled off, and the adhesive surface is attached to an object to be used.

[0003] When used as a seal of an arbitrary shape, a cut line 4 of an arbitrary shape is inserted in the upper paper 1 in advance, and the cut line 4 is peeled off from the release paper 3 before use.

[0004] Generally, the cut line is formed by inserting a cut line only in the top paper 1 or the top paper 1 and the pressure-sensitive adhesive layer 2 of the pressure-sensitive adhesive sheet and not cutting the release paper 3 as a seal of any shape. Since it is used and does not require the trouble of cutting, it is easy to use and widely used.

However, since the upper paper 1 has the cut line 4 before the image is formed by the image forming apparatus, it is easily peeled off from the cut line 4 portion. In the paper transport path, a part is peeled, and the peeled part is bent or, in the worst case, rises at the cut line 4 and hits the print head, causing the head to be destroyed. There is a serious drawback that the image forming apparatus may remain in the image forming apparatus and stop operating.

In particular, in the case where the transport path of the image forming apparatus is bent, that is, as shown in FIG. 2, the release sheet side 8 of the adhesive sheet 5 is wound around a transport roll 9 in the image forming apparatus. In addition, there is a considerable phenomenon that the seal rises at the cut line 4 portion, and it is not possible to use the seal with confidence in consideration of the above-mentioned disadvantages. Also, as shown in FIG. 3, in the image forming apparatus having a structure in which the upper paper side (image forming surface side) 7 of the adhesive sheet 5 is lightly wound around the roll 9, there is little phenomenon that a seal of an arbitrary shape rises. Depending on the usage, a floating phenomenon may occur. 2 and 3, reference numeral 10 denotes a print head.

Naturally, the rising phenomenon of the seal easily occurs when the sheet is cut in a direction perpendicular to the sheet conveying direction, and the sheet is hardly lifted in the cutting in the sheet conveying direction.

As described above, the pressure-sensitive adhesive sheet provided with the cut line 4 in an arbitrary shape is very excellent in usability, but has the above-mentioned disadvantages depending on the image forming apparatus used.

[0009]

SUMMARY OF THE INVENTION The present invention relates to an image forming apparatus which uses an adhesive sheet having a cut line formed in an arbitrary shape to prevent floating of a seal of an arbitrary shape when an image is formed by the image forming apparatus. It is another object of the present invention to provide a pressure-sensitive adhesive sheet for an image forming apparatus which can be used without causing a problem in the image forming apparatus and which can be used without impairing the convenience of the pressure-sensitive adhesive sheet having a cut line.

[0010]

A pressure-sensitive adhesive sheet for an image forming apparatus according to the present invention comprises a top paper, a pressure-sensitive adhesive layer and a release paper, and is used for separating the top paper or the top paper and the pressure-sensitive adhesive layer in an arbitrary shape. In the pressure-sensitive adhesive sheet for an image forming apparatus in which the cut line is formed, the cut line includes a discontinuous cut line.

[0011]

FIG. 4 shows a plan view of the pressure-sensitive adhesive sheet of the present invention.
A seal 6 having an arbitrary shape is formed by the cut line 4.

Normally, the seal is formed by a line in which the cut line 4 is continuous over the entire circumference, and is used after peeling off from the release paper 3 after image formation. As a matter of course, since the cut line 4 is formed over the entire circumference, it is easier to peel off than the release paper, and is easy to use. However, as described above, in consideration of the adverse effect due to peeling during image formation, Improvements are needed to make it more complete.

As shown in FIG. 4, the cut line 4 in the present invention comprises a mixture of a linear cut line 41 and a discontinuous perforated cut line 42. The cut line portion 41 is more easily peeled than the release paper, but the cut line portion 42 having a perforated shape is not peeled off unless the perforation is cut.

That is, in FIG. 4, the perforated cut line portion of the present invention is
In the embodiment shown in FIG. 5, it is connected to an adjacent seal so that the seal cannot be peeled off by itself. Therefore, when peeling off the seal of the present invention, an independent seal can be obtained by floating the linear cut line 41 and then cutting off the perforated cut line 42.

The linear cut line 41 and the perforated cut line 42 can basically achieve the object of the present invention if they are mixed. However, it is preferable that the image forming apparatus It is desirable that when the sheet is fed to form an image, the leading end 61 of the tack seal in the transport direction is not easily peeled off and the perforation is easy to cut after the image formation is completed.

[0016]

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

(First Embodiment) FIG. 4 shows a plan view of a pressure-sensitive adhesive sheet according to a first embodiment of the present invention. In FIG. 1, 1 is an upper paper, 2 is an adhesive layer, 3 is a release paper, 4 is a cut line, and 5 is an adhesive sheet.

In FIG. 4, 41 is a linear cut line,
42 is a perforated cut line, 6 is a seal of an arbitrary shape separable by the cut line, 11 is an upper sheet remaining after peeling off the seal 6, and the seal 6 itself is configured in an independent state.

In this embodiment, as shown in FIG. 4, of the cut lines separating the seal 6, the cut line on the lower side of the drawing is constituted by a perforated cut line 42.
After the image is formed, the seal 6 is peeled off from above the seal 6 and finally the perforation is cut off, whereby the image-formed seal 6 can be obtained.

In this embodiment, the downward direction in the drawing is the insertion side of the recording paper conveyance path of the image forming apparatus, so that when a sheet is fed to the image forming apparatus to form an image, the image is formed inside the image forming apparatus. Since the part where the peeling adversely affects first is the perforation cut line, the problem due to the peeling of the seal can be eliminated.

The perforated cut line is formed in accordance with the thickness of the top sheet 1 of the adhesive sheet 5 in order to make the cut line easier to cut and to make the cut line after the cut clear. It is necessary to appropriately select the missing part. According to our test results, for a paper thickness of about 50 to 250 μm, which is usually used, the length of the portion without a cut line is set to 0.15 to 0.
Almost good results could be obtained with a perforation in which the length of the cut line portion was set to 0.3 mm or more at about 5 mm.

Under the above conditions, the length of the portion without the cut line is as small as possible, and by making the length of the cut line portion as long as possible, a clearer cutting line can be formed, and all the lines are cut. You can make something the same as a normal seal.

Further, by providing the perforated cut line on the vertical side, it is possible to use the paper without restricting the transport direction of the paper when feeding the paper to the image forming apparatus.

(Second Embodiment) FIG. 5 shows another embodiment of the present invention. As in the first embodiment, the seals 6 are independent from each other and one side of the seal 6 below the drawing. The cut line has a perforated cut line 42, and in particular, in this embodiment, the perforated cut line 42 is partially provided on one side below the seal 6. In this embodiment, perforated cut lines 42 are provided at two places on the left and right sides of the lower side, and the central portion is constituted by a normal cut line 41. According to this embodiment, it is very easy to cut out the perforations. In addition, there is an effect that the finish after cutting can be made very clean.

In particular, the configuration of this embodiment is effective for a relatively large seal because the cut amount of the perforated cut line when peeling off the seal is small. Of course, the set number and positions of the perforated cut lines are arbitrary, and it is desirable to optimize them according to the size, shape, seal thickness and the like of the seal. At this point, it is desirable to set the ratio between the linear cut line and the perforated cut line to be desirable. For an A4 size adhesive sheet in which 90 × 50 mm rectangular seals, which are general seal sizes, are arranged in two rows. As a result of the test using the sample, the following results were obtained.

First, seals having a total of two perforated cut lines with a cut portion of 0.15 mm, a non-cut portion of 0.2 mm, and a length of 2 mm are arranged on the left and right sides with respect to 90 mm of the long side. Even when the adhesive sheet is conveyed by a printer, no lifting phenomenon occurs. Second, in the case where the perforated cut line is located at one place, a corner portion is lifted.

Therefore, when the outer side of the seal is formed of a substantially straight line including a large radius, one end is provided at each end.
The object of the present invention can be achieved in the most preferable state by providing two perforated cut lines for each part and configuring the other line cut lines.

(Third Embodiment) FIG. 6 shows another embodiment of the present invention. Unlike the first and second embodiments, the seal is formed continuously. , A part of the cut line 4 is shared with the cut line of the adjacent seal. In the case of this embodiment, it is desirable to replace the horizontal cut line with a perforated cut line 41 as shown in the figure, considering the conveyance direction of the adhesive sheet 5. However, in this embodiment, when peeling one seal,
It is necessary to cut out two perforations, and it is hard to say that it is enough for usability. Therefore, it is necessary to consider to reduce the portion of the perforated cut line 42 as much as possible. For example, as described in the second embodiment, the perforated cut line 42 is By increasing the number of the cut line portions 41, the object of the present invention can be achieved in a convenient state.

As is clear from the above description, the present invention is an adhesive sheet in which a part of a cut line is constituted by a perforated cut line, and a method of forming the perforated cut line, that is, a perforated cut line. Where to provide
Many embodiments are conceivable depending on the number, length, perforation size, and the like. For example, in the first and second embodiments, the perforated cut line is provided not only below the drawing but also above the drawing,
Alternatively, there may be provided one provided at the top, bottom, left and right other than the corner, and one utilizing a micro perforation having a very fine perforated cut line. Any of them can be appropriately selected depending on the size of the seal, the paper thickness of the seal and the like.

Although the main embodiments of the present invention have been described above, in any of the embodiments, the manufacturing method and equipment do not need to be particularly changed, and those that need to be changed are, for example, perforated cuts. Only the cutting blades that make up the line and the linear cut line can make full use of conventional equipment and technology.

In the embodiment of the present invention, the following contents are not particularly limited, and can be widely applied. That is, the upper paper constituting the adhesive sheet, the adhesive layer, a material such as release paper, or a similar configuration, and further, the position, number, and length of the perforated cut line,
The perforation size, the perforated cut line and the linear cut line installation balance, and the like can be appropriately used depending on the situation.

In particular, as for the upper paper on which an image is formed, the present invention can be applied to all kinds of ordinary plain paper, coated paper for exclusive use of an ink jet printer which can correspond to an ink jet printer, and the like.

[0033]

As described above, according to the pressure-sensitive adhesive sheet for an image forming apparatus of the present invention, regardless of the degree of bending of the pressure-sensitive adhesive sheet when a different sheet is conveyed by the image forming apparatus, the pressure-sensitive adhesive sheet can have any shape. The trouble of the image forming apparatus due to the rising of the seal can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional structural view showing a structure of a general adhesive sheet for image formation.

FIG. 2 is a conceptual diagram illustrating a conveyance mode in which a sheet is greatly bent in the image forming apparatus.

FIG. 3 is a conceptual diagram illustrating a conveyance mode of the image forming apparatus in which sheet bending is small.

FIG. 4 is a plan structural view of a tack seal, showing the concept of the present invention and a first embodiment.

FIG. 5 shows a second embodiment of the present invention, and is a plan structural view of a tack seal.

FIG. 6 shows a third embodiment of the present invention, and is a plan structural view of a tack seal.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Top paper 2 Adhesive layer 3 Release paper 4 Cut line 5 Adhesive sheet 6 Lower side 61 of tack seal 6 Top side of adhesive sheet 5 8 Release paper side of adhesive sheet 5 9 Roll for conveyance 10 Print head 41 Linear Cut line 42 Perforated cut line

Claims (9)

[Claims] 1. An adhesive sheet for an image forming apparatus, comprising: a top paper, an adhesive layer, and a release paper, wherein a cut line for separating the top paper or the top paper and the adhesive layer in an arbitrary shape is formed. An adhesive sheet for an image forming apparatus, wherein a non-continuous cut line that can be separated is formed in the cut line. 2. The pressure-sensitive adhesive sheet according to claim 1, wherein the discontinuous cut line is a perforated cut line. 3. The pressure-sensitive adhesive sheet for an image forming apparatus according to claim 1, wherein when the arbitrary shape is a shape including a straight line, the discontinuous cut line is provided in a linear portion of the arbitrary shape. 4. When a part or all of an outer shape side of an arbitrary shape is shared with an adjacent arbitrary shape, a part of the shared outer shape side is constituted by the discontinuous cut line. The pressure-sensitive adhesive sheet for an image forming apparatus according to the above. 5. The pressure-sensitive adhesive sheet for an image forming apparatus according to claim 1, wherein when the arbitrary shape is a square or a rectangle, the discontinuous cut line is formed on at least one side. 6. The pressure-sensitive adhesive sheet according to claim 1, wherein the discontinuous cut lines are provided at a plurality of positions. 7. The pressure-sensitive adhesive sheet for an image forming apparatus according to claim 1, wherein when a curve is included in the arbitrary shape, the discontinuous cut line is provided at a portion other than the curved portion. 8. The method for transporting an adhesive sheet for an image forming apparatus according to claim 1, wherein the discontinuous cut line is transported in a direction perpendicular to a transport direction of a recording apparatus. A method for conveying a pressure-sensitive adhesive sheet for an image forming apparatus. 9. The method of conveying an adhesive sheet for an image forming apparatus according to claim 1, wherein the non-continuous cut line side in the arbitrary shape is conveyed as a superior side in a conveying direction. An adhesive sheet conveying method for an image forming apparatus.