JP3502162B2 - Duplex copy form - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copy form capable of copying on both sides.

[0002]

2. Description of the Related Art Conventionally, in a non-carbon copying form consisting of two pieces of paper, a color former layer is provided on the back surface of the upper paper piece and a developer layer is provided on the surface of the lower paper piece. It is a so-called one-sided copy form in which the contents entered in (1) are copied onto the front surface of the lower paper piece, and the back surface of the upper paper piece and the back surface of the lower paper piece are not used for copying. Therefore, in the above-mentioned one-sided copy form, only one side of the paper piece can be used as a writing area, so that there is a drawback that a wide area of the paper piece is required to secure a predetermined writing area.

[0003]

SUMMARY OF THE INVENTION The present invention is a compact non-carbon copy form consisting of two pieces of paper, which enables copying on both sides of each piece of paper to reduce the area of the piece of paper of the copy form. It is to provide a double-sided copy form that is easy to handle and at a low price.

[0004]

[Means for Solving the Problems] An original paper piece provided with a color former layer on both sides and a backing paper piece provided with a color developer layer on both sides are overlapped with the original paper piece above, and at least one edge of the paper piece is placed. A double-sided copy form characterized in that a part is folded back to the other paper piece side through a crease line, and the folded-back portion and an end portion of the other paper piece are bonded together.

A piece of paper is folded in two along a crease line to form an upper original paper piece and a lower original paper piece, and a coloring agent layer is provided in a predetermined region on both sides of the original paper piece, and the original paper piece is also provided. A double-sided copy form characterized in that a developer layer is provided in predetermined regions on both sides of the above.

The double-sided copy form is characterized in that the original form sheet piece and the backing sheet piece are configured to be separable at a fold line.

[0007]

[Function] By providing the color former layer on both sides of the upper original paper piece and the color developer layer on both sides of the lower backing paper piece, both paper pieces are reversed as it is and at the crease line. In the folded state, the back surface of the upper original paper piece becomes the color developer layer, and the front surface of the lower paper holding piece becomes the developer layer.
By writing and copying from the front surface or the back surface of the original sheet, the entered content can be copied on both sides of the original sheet.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a view showing a double-sided copy form according to the first embodiment of the present invention.
2A is a perspective view, FIG. 2B is a cross-sectional view taken along the line II of FIG. 2A, FIG. 2 is a plan view of the double-sided copy form of the first embodiment of the present invention, and FIG. With the side backing piece open,
(B) is a cross-sectional view showing a state in which (A) is turned upside down, and FIG. 3 is a cross-sectional view showing a state in which the double-sided copy form according to the first embodiment of the present invention is filled in from both sides and copied. Condition,
FIG. 4B shows the second embodiment of the present invention in which (B) is the state in which the original paper sheet and the backing paper sheet are reversed and folded at the crease line from the state of (A).
It is a figure which shows the double-sided copy form of an Example, (a) is a perspective view,
(B) is a cross-sectional view taken along the line I-I in (A), and FIG. 5 is a cross-sectional view showing a state in which a double-sided copy form according to the second embodiment of the present invention is filled in from both sides and copied. The state of writing on the surface of the piece of paper, (b) is the state in which the original piece of paper and the backing piece of paper are reversed from the state of (a) at the crease line and folded back, 1 is the original paper piece, 1a is the original paper piece surface, 1b is the original paper sheet The back side of the paper piece, 2 is a backing piece, 2a is the front side of the backing piece, 2b is the back side of the backing piece, 3 is a color former layer, 4 is a developer layer, 5 is a crease line, 6 is an adhesive portion, 7 is a front face entry column, 8 Indicates the back entry fields.

As shown in FIG. 1A, the structure of the double-sided copy form according to the first embodiment of the present invention is such that the original form piece 1 is placed on the upper side and the backing piece 2 is placed on the lower side, and the end portion of the backing piece 2 is overlapped. Is folded up along the crease line 5 and is bonded to the end of the original paper piece 1 at the bonding portion 6. In FIG. 1 (a), the end of the backing sheet 2 is bent upward at the crease line 5 and adhered to the original sheet 1, but the end of the original sheet 1 is bent downward at the crease line to make the backing sheet. You may make it the structure which adheres to 2. Alternatively, the end portions of the original paper piece 1 and the backing paper piece 2 may be folded back to the opposing paper piece sides and bonded at the folded-back portions. As shown in FIG. 1B, the cross-sectional structure of the above-mentioned double-sided copy form has a color developer layer 3 on both sides of the original sheet 1 and a developer layer 4 on both sides of the backing sheet 2. Are provided respectively. The fold line 5 is formed at the perforation, and the original paper piece 1 and the backing paper piece 2 can be separated at this fold line 5.

FIG. 2 shows a developed state of the double-sided copy form of the first embodiment. FIG. 2A shows a state in which the lower backing sheet 2 is opened in the state of FIG. The original sheet piece front surface 1a having the front surface entry field 7 formed and the backing sheet piece back surface 2b having the back surface entry field 8 formed are in the front surface side, and FIG. 2B shows FIG. Back side 1b of original sheet with back entry field 8 and front side 2a of backing sheet with front entry field 7
And are on the front side. Therefore, in the state of being folded in two, the back side of the original sheet 1 and the front side of the backing sheet 2 or the front side of the original sheet 1 and the back side of the backing sheet 2 are in contact with each other and are provided on the upper original sheet 1. The color developer layer 3 and the color developer layer 4 provided on the lower backing paper piece 2 are in contact with each other.

As shown in FIG. 3, the method of filling in the double-sided copy form of the first embodiment is as shown in FIG. 3A so that the original sheet 1 is on the upper side and the backing sheet 2 is on the lower side. In the state in which the original paper piece surface 1a having the front surface entry field 7 and the backing paper piece surface 2a having the surface entry field 7 formed are folded in two so as to face each other and overlap, the surface entry field 7 of the original paper piece surface 1a When the prescribed items are entered in, the color developer layer 3 provided on the back surface 1b of the original sheet and the developer layer 4 provided on the front surface 2a of the printing paper sheet are in contact with each other. The colorant layer 4 develops the color according to the entered contents, and the same entered contents are copied in the front face entry field 7 on the front surface 2a of the backing sheet. Next, the upper original paper piece 1 and the lower original paper piece 2 are reversed at the crease line 5 and folded back to obtain the state (b). In this state, the original sheet piece back surface 1b having the back surface entry field 8 formed thereon and the backing sheet piece back surface 2b having the back surface entry field 8 formed face up and overlap with each other, and the color former layer 3 provided on the original paper piece surface 1a is overlapped. Since the developer layer 4 provided on the back side 2b of the backing sheet is in contact with the back side, the developer on the back side 2b of the backing sheet is written by entering a predetermined item in the back entry field 8 provided on the back side 1b of the original sheet. Layer 4
Will be colored as written, and the entered content will be copied to the back side entry field 8 provided on the back side 2b of the backing sheet.

As shown in FIG. 4 (a), the structure of the double-sided copy form according to the second embodiment of the present invention is such that one piece of paper is folded in half along the crease line 5 and the original piece of paper 1 is placed on the upper side with the backing piece 2 of paper. Are formed so as to come to the lower side. As shown in FIG. 1B, the cross-sectional shape has a color former layer 3 on both sides of the original paper piece 1 excluding the vicinity of the crease line 5, and a color developer layer on both sides of the printing paper piece 1 excluding the vicinity of the crease line 5. 4 are provided respectively. In the above embodiment, the color former layer 3 and the color developer layer 4 are provided on the entire surface of the original paper 1 or the paper 2 except for the vicinity of the crease line 5, but the surface entry fields of the paper 1 and the paper 2 are not shown. The color former layer 3 or the developer layer 4 may be provided only in the region corresponding to 7 to the back entry field 8. By doing so, the color former layer 3 or the developer layer 4 is provided only in the area required for copying, so that the area other than the writing area will not be colored due to rubbing or the like and the form will not be soiled.
Further, the provision of the color former layer 3 and the developer layer 4 only in the area necessary for this copying can be applied to the first embodiment and the same effect can be obtained.

In the method of filling in a double-sided copy form of the second embodiment, first, as shown in FIG. 5 (a), the original form sheet piece 1 is on the upper side, and the backing sheet piece 2 is on the lower side, and the front side entry column. In the state where the original paper piece surface 1a on which the 7 is formed and the backing paper piece surface 2a on which the surface entry field 7 is formed are folded in two so as to face each other and overlap each other, the predetermined items are entered in the surface entry field 7 of the original paper piece surface 1a. Is entered, it means that the color developer layer 3 provided on the back surface 1b of the original paper and the developer layer 4 provided on the front surface 2a of the backing paper are in contact with each other. Develops according to the entered contents, and the same contents are copied in the front face entry field 7 on the front surface 2a of the backing sheet. Then, the upper original paper piece 1 and the lower original paper piece 2 are folded back at the fold line 5 so as to be in the state of (b). In this state, if you fill in the back side entry column 8 provided on the back side 1b of the original sheet, the developer layer 4 on the back side 2b of the backing sheet will develop the color as written, so it is the same as (a) The entry content is copied to the back entry field 8 provided on the back side 2b of the backing sheet.

The color former layer 3 and the developer layer 4 used in the double-sided copying form of the present invention are those used in ordinary non-carbon copying paper, and are known as color formers and are colorless or light-colored electron donors. Organic compounds having a color forming property, such as triphenylmethanephthalides, leuco auramines, spiropyrans, and fluoranes can be used. A typical compound is crystal violet letolactone, ie, 3,3-bis (p-
It is dimethylphenyl) -6-dimethylaminophthalide. Usually, the color-developing agent is dissolved in an aromatic low-volatile solvent such as allylmethanes, alkylnaphthalenes, and diphenyls, and microcapsulated with a wall agent such as gum arabic and gelatin for use. As the developer, a compound having a phenolic hydroxyl group is usually used, for example, paraphenylphenol, zinc 3,5-dibutylsalicylate, or the like. Usually, the color developer is dissolved in a volatile organic solvent to form a printing ink, which is applied by a method such as gravure printing or flexographic printing.

In the case of the double-sided copy form according to the first embodiment of the present invention, usually, predetermined printing and folding are performed using a paper having the color former layer 3 or the developer layer 4 formed on both surfaces in a separate process. It is glued and processed into a double-sided copy form. In the case of the double-sided copy form of the second embodiment, since the color former layer 3 or the developer layer 4 needs to be provided in a predetermined area of the paper forming the original paper piece 1 or the backing paper piece 2, the above-mentioned color former or An ink using a color developer is prepared and applied on a predetermined area of the paper by gravure printing or flexographic printing at the time of printing and processing of a double-sided copy form for processing.

[0016]

EFFECTS OF THE INVENTION An upper original paper piece provided with a color former layer on both sides and a lower backing paper piece provided with a color developer layer on both sides are adhered at the side end portions of these paper pieces, and are adhered to each other. By using a double-sided copy form that has two fold lines adjacent to each other,
First, fill in the front side entry field from the front side of the original sheet, copy it, fold it back so that both pieces of paper are reversed at the crease line, then fill in the front side entry column from the back side of the original sheet again and copy it, so that both sides of the backing sheet You can copy the same contents as those written on the original form. Therefore, compared with the conventional non-carbon copy form consisting of two pieces of paper, a double-sided copy form with a smaller area can be used, so the copy form can be made smaller and easier to handle, and the cost can be reduced. This makes it possible to obtain a low-priced double-sided copy form.

[Brief description of drawings]

FIG. 1 is a diagram showing a double-sided copy form according to a first embodiment of the present invention, in which (A) is a perspective view and (B) is a sectional view taken along line I-I in (A).

FIG. 2 is a plan view of a double-sided copy form according to the first embodiment of the present invention opened, in which (a) is a state in which a lower backing paper piece is opened;
(B) is the state where (A) is turned over.

FIG. 3 is a cross-sectional view showing a state in which a double-sided copy form according to the first embodiment of the present invention is filled in from both sides and copied, in which (a) is a state in which data is written on the surface of the original sheet, and (b) is (a). A state in which the original paper sheet and the backing paper sheet are reversed and folded at the crease line from the state.

4A and 4B are views showing a double-sided copy form according to a second embodiment of the present invention, in which FIG. 4A is a perspective view and FIG. 4B is a sectional view taken along line II in FIG.

5A and 5B are cross-sectional views showing a state in which a double-sided copy form according to the second embodiment of the present invention is filled in from both sides and copied. FIG. A state in which the original paper sheet and the backing paper sheet are reversed and folded at the crease line from the state.

[Explanation of symbols]

1 original slip 1a One side of original sheet 1b Original sheet back side 2 pieces of paper 2a One side of backing paper 2b Back side of backing sheet 3 Coloring agent layer 4 Developer layer 5 Fold lines 6 Adhesive part 7 front side entry column 8 Back entry fields

Continuation of the front page (56) Bibliography Sho 64-3473 (JP, U) Rikai 63-184774 (JP, U) Rikai Hei 2-126874 (JP, U) Rikai Hei 4-73581 (JP , U) S. 43-28653 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B42D 5/00-15/10 B41M 5/124

Claims (3)

(57) [Claims] 1. An original paper piece having a color former layer on both sides and a backing paper piece having a color developer layer on both sides are overlapped with the original paper piece facing upward, and at least one edge of the paper piece is a crease line. A double-sided copy form characterized in that it is folded back to the other piece of paper through the sheet, and the folded-back portion and the end of the other piece of paper are bonded together. 2. A single piece of paper is folded in two along a crease line to form an upper original paper piece and a lower backing paper piece, and a color former layer is provided in predetermined regions on both sides of the original paper piece, and A double-sided copy form characterized in that a developer layer is provided in predetermined areas on both sides of a backing sheet. 3. The double-sided copy form according to claim 1, wherein the original form paper piece and the backing paper piece are configured to be separable at a fold line.