JPH059976U - Back carbon OCR copy form - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a back carbon OCR copying form which can prevent optical reading mistakes due to carbon stains, and is low cost and easy to manufacture. [Structure] Copying paper 4 superimposed on OCR reading paper 5
An optically readable back carbon layer 2 is formed by coating on the back surface side of the upper paper 1, which is said to be a resin layer which is transferred by external pressure so as to cover at least the upper surface of this back carbon layer 2 and which is not optically readable. 3 is formed by coating.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a back carbon OCR copy form capable of preventing optical reading mistakes due to carbon stains.

[0002]

[Prior Art]

 Conventionally, the back side of the upper paper is coated with a wax layer containing black carbon (smears) to form a copy form with the back carbon layer, and the lower paper placed on the lower side is OCR read. A so-called back carbon OCR copy form is known in which the back carbon of the copy form is transferred to the OCR reading paper (print transfer) due to the printing pressure when the upper surface of the copy form is printed as a sheet (receiving paper). There is.

The OCR reading paper on which the print is transferred by the back carbon of the copy form is thereafter optically read by the OCR machine, and the read content is used as information for computer processing and the like.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional back carbon OCR copy form as described above, when the form is handled, the back carbon applied to the copy form is peeled off by an external pressure other than the printing pressure of a writing machine or a printer and the OCR reading paper. Adheres to the surface of the paper and carbon stains are generated on the surface of the OCR reading paper.

Therefore, the OCR machine reads the carbon dirt together with the transfer printing at the time of reading, and the carbon dirt causes the OCR reading error to occur frequently. There is.

[0006] To solve this problem, for example, Japanese Patent Laid-Open No. 2-131999 has been proposed. These include a first drug supplied by a writing instrument, a second drug that reacts with the first drug, and a second drug that reacts with the first drug. It has the drawback that it cannot be easily manufactured at low cost because the third drug, which reacts with the reaction product of the first drug and the second drug and develops a color, must be applied to the required area of the paper. ..

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to prevent an optical reading error due to carbon stains, a low cost, and an easily manufactured backing. To provide carbon OCR copy form.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, this invention forms a copy paper by applying a backside carbon layer which is peeled by printing pressure and optically readable and is applied to a necessary portion on the back side of the upper paper in order to achieve the above-mentioned purpose. In the form of an OCR reading paper in which the lower carbon paper that is overlaid on the paper is transferred to the back carbon layer by printing on the above-mentioned copying paper, at least the back carbon layer of the above copying paper is transferred by external pressure. It is characterized in that it is covered with a resin layer which is formed and is not optically readable.

[0009]

[Action]

 According to this invention, a resin layer that is transferred by an external pressure and is not optically readable is formed by coating so as to cover the back carbon layer of the copy sheet that is overlaid on the OCR reading sheet, so that the form is printed. Even if an external pressure other than the printing pressure is applied, the directly peeled optically readable carbon does not adhere to the OCR reading paper as in the conventional case. , The dirt does not cause an optical reading error.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory sectional view showing a back carbon OCR copy form according to the present invention, in which 1 is an upper sheet.

As shown in the upper side of FIG. 1A, the upper paper 1 is coated with a wax layer containing black carbon, which is usually used, at a necessary portion on the back surface thereof to form a back carbon layer 2. Has been done. The back carbon layer 2 does not have to be black carbon, but naturally a lead color having an optically readable color is selected.

On the back carbon layer 2, a resin layer 3 which is transferred by an external pressure and which is optically unreadable, for example, a colorless transparent drop-out color resin layer such as red that cannot be read by an OCR machine is applied and formed. It

As described above, the upper paper 1 has the backside carbon layer 2 which is optically readable on the back side thereof and the resin layer 3 which is transferred onto the backside carbon layer 2 by an external pressure and cannot be read optically. The copy paper 4 is formed by coating the layers.

Further, as shown in the lower side of FIG. 1A, reference numeral 5 is a lower sheet (reception sheet) to be superposed on the upper sheet 1, and for example, as shown in FIG. The item column 5a and the print column 5b are printed to form the OCR reading sheet 6. Then, as shown in FIG. 1B, the OCR reading paper 6 is superposed on the lower side of the copying paper 4 to form a back carbon OCR copying form. Incidentally, 7 in the back carbon OCR copy form is a sticking portion to which the upper and lower papers 1 and 5 are detachably attached via the perforations 7a.

In producing the back carbon OCR copy form according to this embodiment, first, the back carbon layer 2 is formed by applying wax containing black carbon to the back surface of the upper paper 1 as the first applying step. Next, as a second coating step, a resin layer 3 having peelability and transferred by an external pressure and which is not optically readable is formed by coating on at least the back carbon layer 2.

By such a double coating operation, the copy paper 4 having the two layers of the back carbon layer 2 and the resin layer 3 on the back surface side of the upper paper 1 can be easily manufactured. Further, in use, when a normal level printing pressure is applied to a writing or printer, both the back carbon layer 2 and the resin layer 3 are transferred onto the upper surface of the OCR reading paper 6. That is, the black lead color characters 8 are transferred to the surface of the OCR reading paper 6 (see FIG. 2).

When an external pressure lower than the printing pressure of a writing or printer is applied to the form, only the optically unreadable resin layer 3 is peeled off and transferred to the upper surface of the OCR reading paper 6, so that, for example, the OCR reading paper 6 is used. Even if there is a stain 3'transferred to the reading paper 6, the optical reading of the stain 3'cannot be performed, so that the optical reading miss due to the carbon stain does not occur.

[0018]

[Effect of the device]

 As described above, according to the present invention, an optically readable back carbon layer is formed on the back side of the copy form, and the back carbon layer is transferred by an external pressure so as to cover the back carbon layer and the optical reading is unreadable. Since it has a structure in which a possible resin layer is formed, it is possible to easily produce a copy form having such two layers by a printing and coating operation.

When an external pressure other than the printing pressure is applied to the copy form, first, an optically unreadable resin layer covering the back carbon layer of the copy form is attached to the OCR reading paper. As a result, only stains that cannot be optically read occur on the OCR reading paper, and reading errors do not occur during OCR reading as in the conventional case.

Therefore, according to the present invention, it is possible to provide a back carbon OCR copy form which can prevent optical reading mistakes due to carbon stains and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing the structure of a back carbon OCR copy form according to the present invention.

FIG. 2 is an explanatory plan view showing carbon stains on a back carbon OCR copy form according to the present invention.

[Explanation of symbols]

 1 Upper Paper 2 Optically Readable Back Carbon Layer 3 Optically Unreadable Resin Layer 4 Copy Paper 5 Lower Paper 6 OCR Read Paper

Claims (1)

[Claims for utility model registration] [Claim 1] A back side carbon layer which is peeled off by printing pressure and which is optically readable and coated on the back side of the top sheet is used to form a copy sheet. In a form in which the lower paper to be overlaid is an OCR reading paper on which the back carbon layer is printed and transferred with the printing on the copy paper, at least the back carbon layer of the copy paper is transferred by an external pressure and is optically transferred. A back carbon OCR copy form characterized by being covered with an unreadable resin layer.