JPH08230970A - Recording medium set - Google Patents

Abstract

PURPOSE: To obtain a recording medium set which can preserve recorded images for a long time with its quality maintained by providing a recording medium having an ink receiving layer and a storage bag including a means for sealing a bag mouth for storing the recording medium with the images recorded. CONSTITUTION: This recording medium set receives, in an individual package 1, a housing bag 6 with an unused recording film 2 received and a storage bag 3 for receiving a recorded film. The storage bag 3 is formed of polyethylene or polypropylene having small gas permeability, while a fastener 4 for maintaining air-tightness at the time of storage is provided at an opening of the storage bag 3. A similar fastener 7 is provided also on the housing bag 6. A cut is formed at a corner of the recording film 2 to identify a surface and a rear of the film, an entire face or a part of a non-recording face is colored or a bar code is put on the non-recording face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium, particularly a recording medium used in an inkjet recording method and a storage bag set thereof.

[0002] BACKGROUND ART Generally, as an ink for use in ink jet recording,
Water-based inks are predominant in terms of odor, safety, and recording characteristics. Such an ink composition was obtained by dissolving various water-soluble dyes in water or a mixed solvent of water and a water-soluble organic solvent (for example, polyhydric alcohol), and adding various additives as necessary. It is a thing.

On the other hand, as recording materials used for ink jet recording, high-quality paper, bond paper, PPC paper, postcards, envelopes, labels, special coated paper coated with a special ink receiving layer, OHP (overhead projector) film, gloss Paper (film) is used. In particular, for special recording media such as special coated paper, OHP film, and glossy paper (film), it is possible to record images with high resolution and quality that is comparable to photography and printing with an inkjet recording device, but for a long time. Further maintenance is required. That is, as the storage stability of the printed matter after recording, humidity resistance (no deterioration of image quality due to storage under high humidity such as 80% relative humidity), light resistance (storage under direct sunlight / fluorescent lamp) Image deterioration due to deterioration of image quality), gas resistance (no fading of dye due to adsorption of strongly oxidizing gas such as ozone and Nox), and yellowing resistance (indoor
It is required that the film (paper) should not turn yellow when left outdoors.

In order to satisfy such required characteristics, various proposals have hitherto been made such as adding a specific binder or silica to the ink receiving layer.

However, the high resolution of color images,
With the progress of higher quality and higher printing speed, it is becoming more and more difficult to satisfy the above characteristics simultaneously and sufficiently.

Furthermore, when recording is performed using a recording medium that has been subjected to the above-described special processing, if the front and back sides (that is, the printing surface and the non-printing surface) are used by mistake, the recording quality will deteriorate. It is not preferable because it brings about.

[0007]

SUMMARY OF THE INVENTION The present invention solves these problems.

That is, the present invention provides a recording medium set capable of storing high-resolution, high-quality image recording easily and for a long period of time in various environments while maintaining its quality. Has an aim.

A further object of the present invention is to provide a recording medium which can be used without mistakenly the front and back surfaces of the recording medium, that is, the recording surface and the non-recording surface.

The recording medium set according to the first aspect of the present invention includes a recording medium having an ink receiving layer,
A sealable storage bag for storing the recording medium on which an image is recorded.

The recording medium according to the second aspect of the present invention is provided with means for distinguishing the recording surface from the non-recording surface.

[0012]

DETAILED DESCRIPTION OF THE INVENTION In the recording medium set according to the first aspect of the present invention, the recorded recording medium is stored in a storage bag. As a result, under high humidity (relative humidity 80% or more)
In the case of storing a recording medium using a water-soluble dye (particularly, a dye having low water resistance), the image quality is deteriorated (for example,
It is possible to effectively prevent ink bleeding, thickening of characters, and blurring of boundaries.

Further, the interleaving paper can prevent the adhesion due to the overlapping of the films, the transfer of the ink, the deterioration of the image quality, and the fading of the dye due to the light of sunlight, fluorescent lamps or the like.

The recording medium constituting the recording medium set according to the first aspect of the present invention and the recording medium according to the second aspect of the present invention are particularly preferably used in an ink jet recording method. Further, the form of this recording medium is not limited as long as it can be recorded by the ink composition, and for example,
It may be in the form of paper, coated paper, a transparent sheet (for example, OHP sheet), a dedicated coated paper coated with a special ink receiving layer, or the like. Here, examples of the recording method using the ink composition include an inkjet recording method, a recording method using a writing instrument such as a pen, and various other printing methods. Further, the ink composition is not limited to the liquid ink, and widely includes a solid colorant and a colorant used by heating and melting.

The storage bag constituting the recording medium set according to the first aspect of the present invention hermetically stores the recorded recording medium. The material is not particularly limited as long as it is an airtight film having a small gas permeability. For example, polyethylene or polypropylene can be used. According to a preferred aspect of the present invention, the means for sealing the storage bag can be an openable / closable chuck.

Further, according to a preferred embodiment of the present invention, the recording medium and the storage bag may be housed in an individual packaging box. Therefore, according to the present invention, there is provided a recording medium set further including an individual packaging box containing the recording medium and the storage bag.

According to another preferred embodiment of the present invention,
When storing the recorded recording medium in the storage bag, it is preferable to insert a slip sheet between the recording mediums. Therefore, according to the present invention, there is provided a recording medium set further including a slip sheet for sandwiching the recording medium on which an image is recorded. By interposing the interleaving paper between the recorded recording media, it is possible to effectively prevent the adhesion due to the overlapping of the recording media and the deterioration of the image quality due to the transfer of the ink composition. Further, when the storage bag is made of a transparent material, the effect that the interleaving paper effectively prevents the colorant from fading due to light from sunlight, fluorescent light, or the like can be expected. Furthermore, since the interleaving paper can be expected to have a function of absorbing water in the ink or an organic solvent, it is preferable that the drying of the print can be promoted even during storage.

According to yet another preferred embodiment of the present invention,
When storing the recorded recording medium in the storage bag, it is preferable to store the desiccant at the same time. Therefore, according to the present invention, there is provided a recording medium set further including a desiccant for storing in the storage bag. With this desiccant,
The humidity in the storage bag can be kept constant.

The recording medium according to the second aspect of the present invention is provided with means for discriminating the recording surface and the non-recording surface thereof. The recording medium according to the second aspect of the present invention is one in which a recording surface and a non-recording surface must be distinguished for some reason, for example, an ink receiving layer is provided only on one surface of the recording medium, and as a result, In order to obtain good recording, the surface having the ink receiving layer must be used as a recording surface. According to the recording medium of the present invention, the recording surface and the non-recording surface can be clearly identified and reliable recording can be performed on the recording surface.

In the present invention, as a specific means for discriminating between the recording surface and the non-recording surface, a difference in shape, color or lightness is caused between the recording surface and the non-recording surface, and the difference is visually observed. Alternatively, it may be mechanically recognized to discriminate between the recording surface and the non-recording surface. Here, the difference in color and brightness is not limited to that due to visible light, but may be due to difference in reflection or absorption of infrared rays or ultraviolet rays, or fluorescence.

According to a preferred embodiment of the present invention, a part of the recording medium is cut out (hereinafter also referred to as a cut portion) in order to discriminate between the recording surface and the non-recording surface. The recording surface and the non-recording surface can be made asymmetrical. Further, according to another preferred embodiment,
In order to distinguish the recording surface from the non-recording surface, the entire non-recording surface or a part thereof may be colored. further,
According to another preferred aspect, a barcode may be attached to the non-recording surface to distinguish the recording surface and the non-recording surface.

It goes without saying that the recording medium according to the second aspect of the present invention can be preferably used as the recording medium of the recording medium set according to the first aspect of the present invention.

The present invention will be specifically described below with reference to the drawings, but the present invention is not limited to these examples.

FIG. 1 shows an embodiment of a recording medium of the second aspect of the present invention, which is preferably used in the recording medium set of the first aspect of the present invention. The recording film 10 is provided with a cut portion 11 so that the front and back of the film can be discriminated. In this embodiment, the surface when the cut portion 11 of the recording film 10 is located on the upper right side is the front surface. By informing the user of this positional relationship in advance, it is possible to always obtain high print quality on the recording surface.

Further, by providing a cut portion discriminating means for discriminating the cut portion in the recording apparatus main body, misuse can be prevented more effectively. The cut portion determination means can be easily configured by providing the paper feed tray with a shape that matches the cut portion. Further, if a sensor or the like is used, it is possible to use the same one as the paper feed tray holding another recording medium.

FIG. 1B shows another embodiment of the present invention, in which the cut portion 11 is formed by a curved line. According to this shape, the cut portion can be made inconspicuous as compared with the embodiment of FIG.

The first embodiment described above is particularly effective for a transparent recording medium such as a recording film for OHP.

FIG. 2 shows another embodiment of the recording medium of the second aspect of the present invention, which is preferably used in the recording medium set of the first aspect of the present invention. This embodiment can be preferably applied to a recording medium which is opaque and has one recording surface. In this embodiment, the back side of the recording film 10 is colored 12 to prevent erroneous recording on the back side. This coloring may be a symbol as shown in the figure, or the entire back surface may be unified with one color. Furthermore, this coloring may be in the form of a bar code.

Next, the recording medium set according to the present invention will be described.

FIG. 3 shows a first embodiment of a recording medium set according to the present invention. In the figure, reference numeral 1 is an individual packaging box, which contains a storage bag 6 in which an unused recording film 2 is stored, and a storage bag 3 in which a recorded recording film is stored. The storage bag 3 is made of polyethylene or polypropylene having a small gas permeability, and a chuck 4 is provided at the opening of the storage bag 3 so that airtightness can be maintained during storage.

The accommodating bag 6 may be formed of the same material by providing the chuck 7 as in the storage bag 3, but may not be particularly airtight.

FIG. 4 shows a second embodiment of the recording medium set of the present invention. As in the first embodiment, 1 is an individual packaging box, and a storage bag in which a recording film 2 for end use is stored. 6 and
A storage bag 3 for storing the recorded recording film is stored. In this embodiment, the storage bag 3 contains the interleaving paper 5.

The interleaving paper 5 may be accommodated in the storage bag 3 in a separable manner, but by forming the interleaving paper 5 integrally in the storage bag 3 so that the interleaving paper 5 can be stored by the user. It is preferable since a recorded recording film can be easily inserted.

FIG. 5 shows a third embodiment of the recording medium set according to the present invention. As in the second embodiment, 1 is an individual packaging box, and a storage bag 6 in which an unused recording film 2 is stored. When,
A storage bag 3 for accommodating a slip sheet 5 and a recorded recording film is accommodated. In this embodiment, the storage bag 3 contains the desiccant 8. As the desiccant 8, a general desiccant can be used, and for example, silica gel can be used.

Further, according to a preferred embodiment of the present invention, the storage bags 3 can be used one by one with respect to one recording film on which recording has been completed, whereby storage stability and convenience are improved. It will improve.

[0036]

EXAMPLE 1 Commercially available color inkjet printer MJ-700V2
Dedicated OHP using C (Seiko Epson Corporation)
A solid printing (100 duty) pattern in which the boundaries of red, green and blue were in contact with the sheet was printed in a room temperature environment. After 10 minutes from printing, the product was placed in a polyethylene bag with a chuck and left for 5 days in an environment of a temperature of 40 ° C. and a humidity of 90%.

Comparative Example 1 A sheet printed in the same manner as in Example 1 was left as it was in a room temperature environment.

Example 2 Using the same color ink jet printer as in Example 1, ten solid printing patterns (100 duty) were printed continuously in a room temperature environment such that the boundaries of red, green and blue were in contact with a dedicated OHP sheet. . Print 10
After a minute, the sheets and the interleaving paper were alternately laminated, placed in a polyethylene bag with a chuck, and left in an environment of a temperature of 40 ° C. and a humidity of 90% for 5 days.

Example 3 Using the same color ink jet printer as in Example 1, ten sheets of solid printing (100 duty) pattern such that the boundaries of red, green and blue were in contact with each other on the dedicated OHP sheet were continuously printed at room temperature environment. . After 10 minutes of printing, the sheets and the interleaving paper are alternately laminated and placed in a bag with a chuck containing a desiccant at a temperature of 40.
It was left for 5 days in an environment of ° C and humidity of 90%.

Comparative Example 2 Using the same color ink jet printer as in Example 1, 10 sheets of solid patterns such that the boundaries of red, green and blue were in contact with each other were printed continuously at room temperature on a dedicated OHP sheet. Ten minutes after printing, the slip sheets left for 1 hour in an environment of a temperature of 40 ° C. and a humidity of 90% were put between the printed recording media one by one. This stack
Put it in a polyethylene bag with a zipper, temperature 40 ℃,
The sample was left for 5 days in an environment of 90% humidity.

Evaluation of storability The storability of the recording medium in the above Examples and Comparative Examples was evaluated by
The following criteria evaluated.

(1) Moisture resistance ⊚: No change from recording before storage. ◯: Ink bleeding and boundary bleeding are slightly generated compared with recording before storage, but this is at an acceptable level. X: Ink bleeding and boundary bleeding are remarkably generated as compared with recording before storage.

(2) Ability to be left in the room The recording media of Example 1 and Comparative Example 1 after being left for 5 days were set on a wall at room temperature and left for 1 month. The image quality before and after leaving was compared. ⊚: Color does not change at all before leaving. ○: There is Wakasen discoloration, but it is at an acceptable level. X: Clearly faded.

(3) Gas resistance Ozone generator (Made by Asahi Rika Glass Industry, maximum concentration 180p
pm) and a desiccator were connected, and the recording media of Example 1 and Comparative Example 1 after standing for 5 days were placed in the desiccator 3 times.
After leaving for 0 minutes, the same evaluation as the indoor leaving property was performed. The above evaluation results are as shown in the following table.

[Table 1]

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a recording medium according to a second aspect of the present invention.

FIG. 2 is a diagram showing another embodiment of the recording medium of the second aspect of the present invention.

FIG. 3 is a diagram showing a first embodiment of the recording medium set of the first aspect of the present invention.

FIG. 4 is a diagram showing a second embodiment of the recording medium set of the first aspect of the present invention.

FIG. 5 is a diagram showing a third embodiment of the recording medium set of the first aspect of the present invention.

[Explanation of symbols]

 1 packaging box 2 ink jet recording film 3 storage bag 4 chuck 5 interleaving paper 8 desiccant

Claims (11)

[Claims] 1. A recording medium having an ink receiving layer on which recording is performed with an ink composition, and a storage bag for storing the recording medium on which an image is recorded, the storage bag having means for making the bag hermetically sealed. A recording medium set comprising. 2. The recording medium set according to claim 1, further comprising an individual packaging box for accommodating the recording medium and the storage bag. 3. The recording medium set according to claim 1 or 2, further comprising interleaving paper for sandwiching the recording medium on which an image is recorded. 4. The recording medium set according to claim 1, further comprising a desiccant for storing in the storage bag. 5. The recording medium set according to claim 1, wherein the recording medium has front and back discriminating means. 6. The recording medium set according to claim 1, wherein the means for sealing the storage bag is an openable / closable chuck. 7. The recording medium set according to claim 1, wherein the storage bag is made of polyethylene or polypropylene. 8. A recording medium provided with means for distinguishing between a recording surface and a non-recording surface. 9. The recording medium according to claim 8, wherein a cutout portion provided in at least a part of the recording medium is provided to identify the recording surface and the non-recording surface. 10. The recording medium according to claim 8, wherein all or part of the non-recording surface is colored in order to distinguish the recording surface from the non-recording surface. 11. A bar code is attached to the non-recording surface to identify the recording surface and the non-recording surface.
The recording medium described.