JP2012153462A - Rolled recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce impact caused when a rolled recording medium with a separator layer that is firmly fixed by an adhesive member at a distal part is peeled from a core, and to suppress a problem that is generated when the distal part of the peeled recording medium adheres to a conveyance member, etc.SOLUTION: In a recording medium roll, a notch is provided in a separator layer closer to a drawer direction of the recording medium than a fixed part of the separator layer fixed to the core of the rolled recording medium with the separator layer.

Description

  The present invention relates to a rolled recording medium in which a recording medium having a separator layer is wound around a core and supplied in the form of a roll, and the end of the recording medium (winding end) is improved by improving the portion fixed to the core. The present invention relates to a roll-shaped recording medium that solves a problem that occurs when a part peels off a core.

  In a recording system such as an ink jet recording system or a thermal recording system, a system in which a recording medium is wound in a roll and continuously supplied is used to the same extent as a system in which recording media are supplied one by one.

  Usually, the roll of the medium is processed by winding the medium on a pipe-shaped core tube, fixing the leading end of the medium, applying a constant tension, and winding it several times while slitting to a constant width. When a recording medium with a roll separator layer is used in a printer, printing is performed while the recording medium with a roll separator layer is pulled out by a paper feed roller of the printer.

When the recording medium with a roll separator layer is completely free from the core tube, that is, when the medium is not fixed to the core tube, the position is not fixed at the start of winding and tension is applied. Since it is difficult to wind in a state, workability is poor. From this point, the core tube and the medium are fixed with an adhesive tape, and winding is started.
In the final stage of printing on a roll medium with a printer, if the core and the recording medium are firmly fixed, the medium is not sent because the recording medium does not peel from the core if printing is in progress. Printing on the same part of the printer for a long time, which may cause a printer head failure.

Conventionally, the following improvements have been made to eliminate such inconvenience.
For example, Patent Document 1 discloses a medium in which a long medium is fixed to a winding core with an adhesive tape, and the medium is cut.
Patent Documents 2 and 3 disclose performing perforation processing on a roll paper fixed to a core.

However, even when the above method is applied, tension is applied when cutting the cut line or the perforation, and a load is generated on the driving device that is driven to pull out the recording medium, which also increases the frequency of occurrence of failure.
Also, the separator layer and the recording medium are different in material and thickness, and the breaking force when cutting a cut or perforation is also different. Only the separator layer or the recording medium is broken, or the separator layer is peeled off due to partial breakage, and is conveyed. The control is disabled or the transport mechanism is entangled.

JP-A-9-58906 JP 2003-231345 A Japanese Utility Model Publication No. 4-47552

  An object of the present invention is to solve the problems that occur in the roll-shaped recording medium.

Means for solving the above-described objects are as follows.
(Invention 1)
In the recording medium roll in which the separator layer and the core at the end of the recording medium of the recording medium having the separator layer are fixed, and the recording medium is wound around the core with the separator layer side inside,
A recording medium roll, characterized in that a cut is provided in the separator layer on the side in the drawing direction of the recording medium from the fixing part of the separator layer fixed to the core.

(Invention 2)
The recording medium roll according to invention 1, wherein the core side surface of the separator layer and the core are fixed via an adhesive member at the fixing portion where the separator layer and the core at the end of the recording medium are fixed.
(Invention 3)
3. The recording medium roll according to claim 1, wherein an adhesive force between the separator layer and the core is larger than an adhesive force between the separator layer and the recording medium.
(Invention 4)
4. The recording medium roll according to any one of inventions 1 to 3, wherein when pulling out the recording medium end portion from the core, the separator layer on the fixing portion side from the notch remains on the core.
(Invention 5)
5. The recording medium roll according to any one of inventions 1 to 4, wherein the cut has a portion arranged at a different position in the drawing direction of the recording medium.
(Invention 6)
The recording medium roll according to any one of inventions 1 to 5, wherein the cuts are intermittently arranged in a width direction of the recording medium.
(Invention 7)
The recording medium roll according to invention 2, wherein the adhesive member is a double-sided pressure-sensitive adhesive tape in the fixing portion.

FIG. 1 is a diagram showing an example of an embodiment of a roll-shaped recording medium of the present invention, and is a schematic cross-sectional view of the roll-shaped recording medium of Example 1. FIG. 2 is a top view of the roll-shaped recording medium of Example 1.

  Hereinafter, embodiments of a roll-shaped recording medium (recording medium roll) of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an example of an embodiment of a roll-shaped recording medium of the present invention, and is a schematic sectional view thereof.
A roll-shaped recording medium 10 shown in FIG. 1 includes a recording medium 3 with a separator having a recording medium 2 and a peelable separator layer 1 on the surface opposite to the recording surface. Thus, the structure is wound around the cylindrical core 5. At this time, the winding start end portion (recording medium end portion) of the recording medium 3 with the separator is fixed to the core 5 by fixing the separator layer 1 and the core 5 with the adhesive member 4. The separator layer 1 is provided with a notch 6 on the recording medium drawing direction side with respect to the fixing portion fixed to the core 5 of the separator layer 1.

The recording medium 2 includes a base material 21 and an ink receiving layer 22 serving as a recording surface, and has a separator layer 1 on the base material 21 side.
The separator layer 1 includes a release layer 12 that is an adhesive layer and a separator sheet 11, and is bonded to the recording medium 2 via the release layer 12. The release layer 12 is formed of a material whose adhesiveness does not become a problem after the sheet is peeled off.
The roll-shaped recording medium 10 is an example in which a double-sided adhesive tape is used as the adhesive member 4, and adhesive layers 41 and 43 are formed on a double-sided tape base 42.

In the present invention, the cut 6 may be continuous or perforated. The notch 6 may penetrate through the separator layer 1 or may be a notch that is not allowed to penetrate if the impact when it is cut is within a range that the drive member can withstand.
The adhesive force due to the notch 6 can be compared by a 180 degree peel force obtained by a 180 degree peel test in accordance with JIS K 6854-2.

In the present invention, the adhesive member 4, that is, the adhesive used between the separator layer 1 and the core 5 can be an acrylic adhesive, a rubber adhesive, or a silicone adhesive.
For example:
There are ethylenically unsaturated copolymers having a repeating unit structure selected from monomers such as vinyl acetate, ethyl acrylate, ethyl methacrylate, methyl acrylic acid, acrylic acid and the like. Mention may also be made of homopolymers of ethylene or propylene, copolymers of ethylene and propylene, ionomers of ethylene and methylacrylic acid or acrylic acid, grafted anhydride copolymers, polyamides, polyurethanes, and compatible blends thereof. it can.
Moreover, it is also preferable to use a double-sided adhesive tape for the adhesive member 4.

  The core 5 of the present invention is not particularly limited to a cylindrical one, and may be a tube. Plastic or paper tubes are preferred.

  Examples of the material for forming the release layer 12 include acrylic adhesives such as copolymers of isooctyl acrylate and acrylic acid, synthetic rubber adhesives such as silicone, polyisoprene, polybutadiene, styrene-isoprene-styrene copolymer. Examples include natural rubber adhesives and the like such as coalescence. Silicone resin adhesives, acrylic adhesives, and synthetic rubber adhesives are particularly useful.

  The thickness of the release layer 12 is preferably about 0.1 to 1.0 μm.

  As the base material 11 of the separator sheet, a base material similar to the base material for recording media made of natural paper, synthetic resin film such as PET film, olefin resin film, PPS resin film, TAC film, acrylic resin film should be selected. The thickness is about 25 to 150 μm.

  Hereinafter, the examples of the recording medium 10 with a roll separator layer which is an example of the embodiment of the present invention will be described in further detail with respect to the recording medium with a roll separator layer of the present invention. It is not limited.

Example 1
Silicone resin adhesive (FS XA-2541, manufactured by Dow Corning Asia Co., Ltd.) / Silicone rubber (Silascon RTV4086A, Dow Corning Asia Co., Ltd.) on one side of a PET film having a thickness of 50 μm as separator sheet 11 ) / Silicone rubber (Silascon RTV4086B, manufactured by Dow Corning Asia Ltd.) = 24.8 / 37.6 / 37.6 and adjusted to a non-volatile content of 30.0% using toluene. A separator film (separator layer 1) provided with a release layer 12 was prepared by applying a dry film thickness of 30 μm using a bar and drying and curing in hot air at 165 ° C. for 2 hours.
This separator medium was affixed to the surface of the base material 21 opposite to the side of the long ink jet recording medium 2 having the ink receiving layer 22 on which the ink receiving layer 22 is located, to prepare a recording medium 3 with a separator layer.
The 180 degree peeling force between the recording medium and the separator medium was 2.8 N / 25 mm and 300 mm / min.

On the separator layer 1 of the recording medium 3 with the separator layer, a rectangular double-sided adhesive tape having a size of 2 cm in the lateral direction and 1 cm in the longitudinal direction of the recording medium is used as the adhesive member 4. In parallel, the recording medium 3 with a separator layer was pasted almost at the center. The separator layer 1 is located approximately 1 cm away from the double-sided pressure-sensitive adhesive tape 4 in the direction opposite to the winding start end direction A of the recording medium 3 with the separator layer, and substantially parallel to the double-sided pressure-sensitive adhesive tape at the center of the recording medium 3 with separator layer. A cut 6 was made in the recording medium 3 with a separator layer without a double-sided adhesive tape, and the cuts 6 were made obliquely in the direction of the winding start end A of the recording medium. Thereafter, the recording medium 3 with a separator layer was wound around the core 5 to prepare a roll-shaped recording medium 10. This is Example 1.
The 180 degree peeling force between the separator layer 1 and the core 5 by the double-sided adhesive tape was 10 N / 25 mm 300 mm / min.
The roll-shaped recording medium 10 of Example 1 was set in an ink jet printer having a structure in which the roll-shaped recording medium 10 can be set, and wound up until the recording medium 3 with a separator layer was completely wound. When the end of the recording medium 3 with the separator layer is reached, the separator layer 1 is peeled from the score line to the end, leaving the separator layer 1 with the adhesive on the core 5, and the recording medium 3 with the separator layer is the core 5. It was driven away from the printing section. Since no pressure-sensitive adhesive remains on the recording medium 3 with a separator layer, there is no inconvenience of sticking to a conveyance member or the like during conveyance.
When the separator layer 1 is cut obliquely in this way, a small amount of adhesive only needs to be placed in the center of the recording medium 3 with the separator layer, leading to saving of the adhesive.

  FIG. 2 is a top view of the roll-shaped recording medium 10 according to the first embodiment. In Example 1, the notch 6 is intermittently formed in a perforation in the lateral width direction (vertical direction in FIG. 2) of the recording medium 3 with a separator layer, and the cutting 6 is in the pulling direction of the recording medium 3 with a separator layer. It has a portion arranged in a different position (left direction in FIG. 2).

The incision may be a constant position in the direction in which the recording medium 3 with the separator layer is pulled out. However, by having a portion with a different position, when a force is applied to separate the notch portion when the recording medium end is pulled out. The impact load on the recording apparatus can be dispersed over time.
Further, the notch 6 may be a notch 6 continuous in the width direction of the recording medium 3 with the separator layer, but by making the notch intermittent, the recording device when the separator layer 1 is separated at the notch portion. Can be adjusted.
Further, the position of the cut in the horizontal width direction is set to the left and right target positions from the center in the horizontal width direction of the recording medium 3 with the separator layer, so that the load when the separator layer 1 is separated is symmetrical left and right in the horizontal width direction. As a matter of fact, the skew of the recording medium 3 with the separator layer can be made difficult to occur.
Further, the fixing portion where the separator layer 1 is fixed to the core 5 by the adhesive member 4 only needs to be provided in at least a part in the horizontal width direction of the recording medium 3 with the separator layer, and is provided continuously in the horizontal width direction. Or may be provided intermittently, and preferably provided symmetrically in the lateral direction from the center in the lateral direction.
In Example 1, the adhesive force between the separator layer 1 and the core 5 is set larger than the adhesive force between the separator layer 1 and the recording medium 3 with separator layer. By doing so, it is possible to reduce the impact load on the drive device, and to easily leave the separator layer 1 on the fixed portion side rather than the cut on the core 5 when the end of the recording medium is pulled out.

  The recording medium roll of the present invention to which Example 1 and the above-described device were added can reduce the impact load on the drive device, can extend the life of the drive device, and does not cause problems due to poor conveyance.

  DESCRIPTION OF SYMBOLS 1 Separator layer, 11 Separator sheet (separator base material), 12 Release layer, 2 Recording medium, 21 Recording medium base material, 22 Ink receiving layer, 3 Recording medium with a separator layer, 4 Double-sided adhesive tape which is an adhesive member, 41, 43 Adhesive layer of double-sided tape, 42 Base material of double-sided tape, 5 cores, 6 Cutting into separator layer, A Recording medium winding start end direction

Claims (7)

In the recording medium roll in which the separator layer and the core at the end of the recording medium of the recording medium having the separator layer are fixed, and the recording medium is wound around the core with the separator layer side inside,
A recording medium roll, characterized in that a cut is provided in the separator layer on the side in the drawing direction of the recording medium from the fixing part of the separator layer fixed to the core.   The recording medium roll according to claim 1, wherein the core side surface of the separator layer and the core are fixed via an adhesive member in the fixing portion where the separator layer and the core at the end of the recording medium are fixed.   The recording medium roll according to claim 1, wherein an adhesive force between the separator layer and the core is larger than an adhesive force between the separator layer and the recording medium.   4. The recording medium roll according to claim 1, wherein when the recording medium end portion is pulled out from the core, the separator layer on the fixing portion side from the notch remains on the core. 5.   The recording medium roll according to any one of claims 1 to 4, wherein the cut has a portion arranged at a different position in a drawing direction of the recording medium.   The recording medium roll according to any one of claims 1 to 5, wherein the cuts are intermittently arranged in a width direction of the recording medium.   The recording medium roll according to claim 2, wherein the adhesive member is a double-sided pressure-sensitive adhesive tape in the fixing portion.

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