JP2000025973A - Carrier sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a document from being damaged by fitting resin film so as to meet the electrostatic-attractable surface of an electrostatic-attractable base material, and forming at least either the electrostatic-attractable base material or the resin film out of transparent material, thereby copying the document without being dislocated. SOLUTION: An electrostatic-attractable base material 1 holds a document, so that the document can be conveyed automatically without being affixing onto the base material with tape or paste. Polyvinyl chloride film mixed with 40-60C organic ketone, polyvinyl chloride film mixed with an organic tin stabilizer, polypropylene film, or the like used as an electrostatic-attractable material. The electrostatic-attractable base materials are simply laminated on a sheet- shaped supporting body, or an electrostatic-attracting layer 2 is formed out of the layer of the electrostatic-attractable polymer. At least either the electrostatic-attractable base material 1 or the resin film 4 should have transparency to an extent that a device can read the document.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a copier and a fax machine.
The present invention relates to a carrier sheet that is used by sandwiching a document with a document.

[0002]

2. Description of the Related Art Thin paper such as heat-sensitive paper and small-sized originals are not conveyed well by automatic conveyance such as a copying machine, and there is a problem that a paper jam is caused and the original is damaged.

Therefore, a carrier sheet is used to sandwich a document between a transparent film and a base material to prevent the document from being damaged.

However, such a method has a problem that the original image moves when automatic conveyance is performed, and the copied image is inclined.

[0005] In particular, such a phenomenon is remarkable in a small original, and the original is attached to the base material using a tape or glue. However, the original is attached to the base material using a tape or the like. When the document is removed from the base material, the document is likely to be damaged.

On the other hand, when copying or faxing a document after writing it, if it is desired to leave the original document unwritten, prepare another document for writing in advance, or After copying or sending a fax, writing with a pencil or the like is performed so that the writing can be erased.

However, according to such a method, there is a problem that paper is wasted and work is complicated.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to copy a thin paper such as a thermal paper or a small-sized original without displacement by simply sandwiching the original without using a tape. It is another object of the present invention to provide a carrier sheet that can be written and does not damage the original, and further provides a writable carrier sheet without writing on the original itself.

[0009]

A carrier sheet according to the present invention comprises a resin film facing a surface of a substrate capable of electrostatic attraction, the surface of which can be electrostatically attracted. At least one of the resin films is made of a transparent material. Further, at least one of the transparent material capable of electrostatic attraction and the resin film has a writing layer.

[0010] The term "transparent" as used herein means that the document has a degree of transparency such that a fax or a copying machine can read the document when the document is sandwiched.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the carrier sheet of the present invention will be described. The carrier sheet of the present invention comprises a substrate 1 capable of electrostatic attraction and a resin film 4, and the substrate 1 capable of electrostatic attraction and the resin film 4 are partially joined to form an integral body. The original is held between the adsorbable substrate 1 and the resin film 4 to hold the original. At least one of the substrate 1 and the resin film 4 that can be electrostatically attracted is made of a transparent material, and an original can be read through the transparent material. Further, by providing a writing layer on a transparent material, it is possible to perform retouching without soiling the original.

The substrate 1 capable of electrostatic attraction is for holding a document. As a result, the document can be automatically conveyed without being attached to the base material with tape or glue.

The substrate 1 capable of electrostatic attraction is a substrate having a property of adsorbing an object by frictional charging or peeling charging, and at least the surface holding the document has an electrostatic attraction force by friction charging or peeling charging. Any material may be used, and in order to hold the document on the substrate 1 capable of electrostatic attraction, it is necessary to cause frictional charging or peeling charging. For this purpose, frictional charging can be caused by rubbing the original document in advance, but without doing so, peeling charging can be performed by turning up the resin film bonded to the base material several times. Can also be caused. Also, triboelectric charging can be caused by writing or erasing the resin film.

Examples of such an electrostatically adsorbable material include a polyvinyl chloride film containing an organic ketone having 40 to 60 carbon atoms, a polyvinyl chloride film containing an organic tin-based stabilizer, and a polypropylene film. Also, there are those in which a substrate capable of electrostatic attraction is simply laminated on a sheet-like support, or a layer made of a polymer capable of electrostatic attraction is formed as the electrostatic attraction layer 2.

The polymer capable of being electrostatically adsorbed is not particularly limited, but specific examples thereof include acrylic resin, vinyl chloride.
Vinyl acetate resin, vinyl chloride / vinyl acetate / maleic acid resin, styrene / acrylic resin, acrylic / vinyl chloride resin, unsaturated polyester, chlorinated rubber, vinyl acetate resin, cellulose acetate resin, ethylcellulose resin, phenolic resin, acrylonitrile / vinylidene chloride There are resins and the like.

Such a resin may be dissolved in an appropriate solvent, applied on a support 3 and dried to form an electrostatic attraction layer 2, thereby forming a substrate 1 capable of electrostatic attraction.

Further, the electrostatic attraction force of the electrostatic attraction layer 2 is better when a polymer layer capable of electrostatic attraction is a porous layer than at a uniform coating film (solid film) layer having a smooth surface. It is more preferable because it becomes stronger.

[0018] The porous layer has open pores on the surface of the membrane,
Open cells or partially open cells are formed in the thickness direction of the film, and a coating film having fine pores of about 5 μm or less in diameter, a so-called microporous film, and a diameter of about 5 to 100 μm
The coating film may be any one of a coating film having an open hole having a coarse opening of m and a so-called brushing film, but is preferably a microporous film from the viewpoint of triboelectric charge.

In order to form such a porous layer, there is a method of dissolving in a solvent obtained by combining a good solvent and a poor solvent for a polymer as a solvent, and coating and drying the solution on the support 3. In this case, the diameter of the pores can be changed by changing the ratio between the good solvent and the poor solvent. The brushing film can be formed by drying in a humidity atmosphere of about 60 to 80% at the time of drying.
About five bubbles can be formed as continuous cells from the surface layer.

The resin film 4 is composed of the substrate 1 and the resin film 4
By sandwiching the document, the force by which the substrate 1 holds the document can be supplemented. This is obtained as a force by which the substrate 1 holds the document by the electrostatic attraction force and a force by which the substrate 1 holds the resin film 4 by the electrostatic attraction force, as a force for sandwiching the document,
This is because the document can be held by both forces.

As the resin film 4, polyester,
A resin sheet such as polyethylene, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, ABS, nylon, polypropylene, and polystyrene can be used.

Also, at least one of the substrate 1 and the resin film 4 capable of electrostatic attraction must have such transparency that a fax or a copier can read the original when the original is sandwiched. . This is because an image cannot be read without such transparency.

A substrate 1 and a resin film 4 capable of electrostatic attraction
A writing layer can be provided on at least one of the transparent materials. As such a writing layer,
There are a conventionally known whiteboard writing layer that can be written with an aqueous or oily pen and erased by wiping, and a trace layer that can be written with a pencil or a pen. By providing such a layer, it is possible to write on a transparent material while visually recognizing the document sandwiched between the base material 1 and the resin film 4, and it is as if writing on the document. And does not stain the manuscript itself.

Further, in order to make the transparent material hard to be damaged, the writing layer may have a hard coat property, or a hard coat layer may be separately provided.

On the surface in contact with the transparent material,
A transfer prevention process can be performed so that transfer of ink or toner printed on the document does not occur.

Further, a mat layer can be provided on the outer surface of the substrate 1 and / or the resin film 4 which can be electrostatically attracted in order to improve conveyance.

Further, a ruled line or the like can be printed on the surface of the substrate 1 or the resin film 4 on which the original can be electrostatically adsorbed so as to position the original.

The thicknesses of the substrate 1 and the resin film 4 are not particularly limited, but are suitably about 4 to 250 μm from the viewpoint of work.

The carrier sheet of the present invention is used to prevent the resin film 4 from coming off when the resin film 4 is turned up or from being displaced from a position at which a document can be covered. And resin film 4
Are partially joined.

As a method of partially joining the base material 1 and the resin film 4, for example, one end or two ends of the resin film 4 may be joined to the base material 1. For example, a method of joining several points on one side of the substrate 4 to the base material 1 in a dotted manner can be used. further,
The portion to be joined may be anywhere such as the upper end, right end, or left end of the base material, and may be configured to join on the back surface of the base material 1 and fold the resin film 4.

Means for joining the base material 1 and the resin film 4 include a method of bonding with a pressure-sensitive adhesive, a double-sided tape, or the like, and a method of bonding the resin film 4 and the base material 1 with heat fusion, ultrasonic fusion, or a solvent. There is a method such as melting a part of the material.

Although the carrier sheet of the present invention comprises the above-described substrate 1 and resin film 4, two or more transparent materials may be laminated. For example, the transparent resin film 4 may be formed on the non-transparent electrostatically adsorbable substrate 1, and the transparent electrostatically adsorbable substrate 1 may be further formed thereon. By overlaying two or more transparent materials on a non-transparent material in this way, if a writing layer is provided on the inner transparent material, the written characters may be rubbed and erased, It can be prevented from sticking to clothes. When two or more sheets are overlapped, it is preferable that the surfaces of the transparent materials be smooth so that they adhere as closely as possible.

[0033]

The present invention will be described in more detail by way of examples. Note that “parts” and “%” are based on weight unless otherwise specified.

The following coating solution for a crosslinked cured resin layer was applied to one surface of a 50 μm transparent polyester film with a Mayer bar, dried, and irradiated with ultraviolet light from a coating surface with a high-pressure mercury lamp.
A transparent resin film having a whiteboard writing layer having a thickness of 4 μm by irradiating for ２2 seconds was produced in a slightly larger size than A4.

<Coating liquid for crosslinked cured resin layer> UV curable resin 26 parts (Unitic 17-824-9: Dainippon Ink and Chemicals, Inc.) Methyl ethyl ketone 17 parts Toluene 17 parts Ethyl cellosolve 17 parts Initiator (Dilka Cure 184) : Ciba Geigy) 0.63 parts

On the other hand, the following coating solution for an electrostatic adsorption layer was applied to one side of a 100 μm polyester film using a Meyer bar and dried at 60 ° C. for 5 minutes to form an open hole having a thickness of 6 μm and an average of 2 μm. An electrostatic adsorption layer of a porous film was formed to obtain a substrate capable of electrostatic adsorption having the same size as the transparent resin film having the whiteboard writing layer.

<Electrostatic adsorption layer coating liquid> Acrylic resin (acrylic MM428: Fujikura Kasei Co., Ltd.) 5 parts Ethanol 50 parts 1,1,1-trichloroethylene 45 parts

Next, the side of the backing layer of the whiteboard writing layer of the transparent resin film was bonded to the surface of the electrostatically adsorbable layer of the substrate capable of being electrostatically adsorbed using a double-sided adhesive tape having a width of 1 cm to obtain a carrier sheet.

Using the cutout of a newspaper as an original, the transparent resin film was turned up two or three times on the obtained carrier sheet, and then sandwiched and held between the base material and the transparent resin film.

Since the held fax transmission manuscript is covered with a transparent resin film, the characters of the manuscript can be read, and the address and the like are written by a whiteboard marker (board fax marker: Plus Kogyo Co., Ltd.). , I could write clearly without rejecting the image, and I could write on the newspaper clipping covered with the transparent resin film, so I could write on the newspaper clipping without soiling it .

Then, in a state where the original for fax transmission is sandwiched between the carrier sheets, the original is transmitted by using the automatic original feed of Fax. Transmission is performed well and the original (copy image) of the destination
I was able to read well.

Further, after the transmission, a portion, such as a destination, added with a whiteboard marker could be easily erased. Also, the original could be easily removed from the carrier sheet.

[0043]

The carrier sheet of the present invention can easily copy thin paper such as thermal paper or small-sized originals without displacement by simply sandwiching the original without using a tape. The document will not be damaged.

Furthermore, since the writing layer is provided, writing can be performed without writing on the original document itself.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a carrier sheet of the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of the carrier sheet of the present invention.

[Explanation of symbols]

 1 ... A substrate capable of electrostatic attraction 2 ... Electrostatic attraction layer 3 ... Support 4 ... Resin film 5 ... Junction

Claims (2)

[Claims] 1. A resin film is provided so as to face a surface of an electrostatically adsorbable substrate which can be electrostatically adsorbed, and at least one of the substrate and the resin film is a transparent material. Carrier sheet. 2. The carrier sheet according to claim 1, wherein at least one of the transparent material capable of electrostatically adsorbing and the resin film has a writing layer.