JP2003220763A - Thermal copying paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a copying paper on which copying can be done clearly on lower pressure sensitive paper without thinning upper base paper. <P>SOLUTION: In the thermal copying paper 1, a thermal transfer layer 5 is formed on the opposite side surface to the thermosensible surface of a statement of delivery 2 of the thermosensible base paper. The statement of delivery 2 and the copy 3 of it are laid to overlap each other so that the thermal transfer layer 5 faces the thermosensible surface of the copy 3. When the upper surface of the statement of delivery 2 is applied to printing by a thermal printer, dense, clear copying is done since copying by the thermal transfer layer 5 besides ordinary thermal copying is applied on the thermosensible surface of the copy 3 to be copied. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-sensitive copying paper which is printed by a heat-sensitive printer.

[0002]

2. Description of the Related Art Conventional thermal copying paper is
Thermal papers that have a thermosensitive coloring layer on one side and have a thermosensitive surface,
The heat-sensitive surface is superposed on the upper surface, and a thermal printer prints on the upper thermal paper to make a copy on the lower thermal paper.

[0003]

However, according to the above-mentioned conventional example, since the upper thermal paper is interposed, the heat necessary for color development is not sufficiently transmitted to the thermosensitive coloring layer of the lower thermal paper. There is an inconvenience that the copied characters become thin. In order to eliminate this inconvenience, attempts have been made to reduce the thickness of the thermal paper, but if the paper thickness of the lower thermal paper is deep enough to produce a deep color, it becomes difficult and expensive to manufacture the thermal paper, and Since it is thin, it is difficult to handle. It is an object of the present invention to provide a thermosensitive copying paper which eliminates such inconvenience.

[0004]

In order to achieve this object, the thermal copying paper of the present invention is provided with a heat transfer layer on one surface of a base paper, and the base paper and the heat sensitive paper are the same. It is laminated so as to face the heat sensitive surface of. On the heat-sensitive side of the heat-sensitive paper to be copied and entered by heat-sensitive printing on the base paper,
In addition to normal copying, copying with a thermal transfer layer is also added,
A deep and clear copy is made.

The base paper may be thermal paper or non-thermosensitive paper, but in the case of thermal paper, a thermal transfer layer is provided on the surface opposite to the thermal surface.

On the other hand, when the base paper is a non-heat-sensitive paper, the surface of the base paper is not printed by a heat-sensitive printer, and only the lower heat-sensitive paper is copied and printed. It is possible to print on the lower thermal paper from above, and to conceal the confidential information with the base paper.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Here, FIG. 1 is a schematic perspective view of the thermal copying paper, and FIG.
It is a line sectional view.

As shown in FIGS. 1 and 2, the thermal copying paper 1 includes a delivery note 2 which is a base sheet made of thermal paper and a delivery note copy 3 superposed on the lower side of the delivery note 3 with an adhesive 4 at the upper edge. It will be line-stitched. The upper surfaces of the delivery note 2 and the delivery note copy 3 are heat-sensitive surfaces, which are not shown but are formed by providing a known heat-sensitive coloring layer. The thermosensitive coloring layer,
It contains a color former, a color developer, and a binder as main components, and optionally contains additives such as a sensitizer, a dispersant, and an antistatic agent.

The color-developing agent is an electron-donating dye precursor, and can be arbitrarily selected from those applied as a leuco dye to this type of heat-sensitive material. Further, the developer is an electron-accepting compound, which is used in combination with the electron-donating dye precursor, and a known material may be used. Furthermore, as a binder,
Known thermoplastic resins can be used.

As shown in FIG. 2, on the lower surface of the delivery note 2,
The thermal transfer layer 5 is provided so as to face the heat-sensitive surface of the delivery note copy 3. The thermal transfer layer 5 can be composed of, for example, a known heat-meltable ink layer containing a colorant and a binder as main components and various additives as necessary.

The colorant is preferably an organic or inorganic pigment or dye having a sufficient coloring density and not discolored or discolored by light, heat or the like. As the binder, a resin binder is mainly used, and a natural resin or a derivative thereof, a natural rubber or a synthetic rubber, or a derivative thereof, a fibrin or a derivative thereof, a solvent-soluble synthetic resin solid at room temperature, an oligomer Etc. can be selected as appropriate. If necessary, auxiliary agents such as a plasticizer, a surfactant and a lubricant can be added to this binder.

As shown in FIG. 1, on the upper surface of the delivery note 2,
A "delivery slip" title 6, a delivery date entry field 7, a destination entry field 8, a delivery company display 9, a delivery information entry field 10 and a receipt stamp field 11 are provided in advance by printing. Also,
Although not shown, on the upper surface of the delivery note copy 3, in addition to the title "Delivery note copy", the same columns as above and the delivery company display are provided at positions corresponding to the upper and lower sides.

Therefore, the thermal copying paper 1 is put on an appropriate thermal printer (not shown) and the desired information is sent to the delivery note 2
When the delivery date entry field 7, the destination entry field 8 and the delivery information entry field 10 are printed, the same contents are copied to the corresponding entry fields of the delivery note copy 3. At this time, since the thermal transfer layer 5 is also present on the upper surface of the delivery note copy 3 in addition to the thermosensitive coloring layer that is present in the normal thermal paper, the copy for each column of the delivery note copy 3 is performed on the thermal transfer layer 5 Is added,
It will be made clear.

The present invention is not limited to the above-described embodiment, and the copy sheet 1 is not limited to the combination of the delivery note 2 and the delivery note copy 3, for example. Further, as the paper corresponding to the delivery note 2, non-thermal paper may be used instead of thermal paper. In this case, printing cannot be performed by the thermal printer on the upper surface of the non-thermosensitive paper, but the printed contents are copied on the lower thermal paper and hidden by the upper non-thermosensitive paper. Furthermore, it is not necessary that the upper paper and the lower paper have the same size.

[0015]

As is apparent from the above description,
According to the invention of claim 1, the thermal transfer layer is provided on the base paper so as to face the heat-sensitive surface of the heat-sensitive paper to be copied.
It is possible to copy the heat-sensitive paper in a clear state without reducing the paper thickness of the base paper.

According to the second aspect of the present invention, in addition to the above effect, since the base paper on which the thermal transfer layer is provided is a thermal paper, the contents printed on the upper surface of the base paper can be copied to a lower thermal paper. Has the effect.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a thermal copying paper.

FIG. 2 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

1 Thermal copy paper 2 delivery note 3 copy of delivery note 4 adhesive 5 Thermal transfer layer

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H026 AA07 AA28 BB01 FF27                 2H111 AA03 AA13 AA26 AA33 BB04                       CA23 CA41

Claims (2)

[Claims] 1. A heat-sensitive copying paper, characterized in that a heat transfer layer is provided on one surface of a base paper, and the base paper and the heat-sensitive paper are superposed so that the heat transfer layer faces the heat-sensitive surface of the heat-sensitive paper. . 2. The heat-sensitive copying paper according to claim 1, wherein the base paper is a heat-sensitive paper, and a heat transfer layer is provided on the surface opposite to the heat-sensitive surface.