JPH0348274A - Method and device for image correction - Google Patents

Abstract

PURPOSE:To readily correct an original sheet in a short time by placing a reversible heat-sensitive sheet which shifts to a transparent state from a cloudy state and vice versa on the original sheet and switching a part that is not to be copied to an opaque, cloudy state by a heating head. CONSTITUTION:The reversible heat-sensitive sheet 2 which shifts to a transparent state from a cloudy state and vice versa is placed on the original sheet 1, and the heating head 4 switches the part not to be copied to an opaque, cloudy state from a transparent state. The reversible heat-sensitive recording material is known as thermochromic material which selectively realizes a transparent or cloudy state at a room temperature due to the difference between heating temperatures, and which is composed of a matrix material made of thermoplastic resin and an organic low- polymer substance dispersed in the matrix material. Consequently, the original contents can be corrected in a short time instead of altering the original itself, without waste and trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image correction method and apparatus for correcting portions of the description on a manuscript sheet that do not need to be copied.

[Conventional technology]

Conventionally, when copying manuscript paper, if there is a part that does not need to be copied, an opaque blank paper or a white frame is attached to the position corresponding to the part that does not need to be copied, and characters, etc. are written there as necessary. .

Additionally, parts of the manuscript paper that do not need to be copied are erased with white correction fluid, and corrections are made as appropriate.

[Problem to be solved by the invention]

Conventionally, to correct manuscript paper, you attach opaque blank paper or a white frame to the parts that do not need to be copied, or erase them with white correction fluid. The work is troublesome because the numbers are not consistent, and in the latter case, if the original is erased with correction fluid, the unrevised original cannot be left behind, so the unrevised original is copied and left and then the revised version is removed. I am creating a manuscript, but it is difficult to write on top of the correction fluid, and in both cases it is laborious, time consuming, and wasteful.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method that does not have the above-mentioned drawbacks and allows for easy correction of manuscript paper in a short period of time.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an image correction method using a thermosensitive sheet made of a reversible thermosensitive recording material that becomes transparent at a first specific temperature and becomes opaque and cloudy at a second specific temperature. is placed on a manuscript paper, and the heating head of the heating member is set at a second specific temperature and brought into contact with a part of the manuscript paper that does not need to be copied, thereby switching the part from a transparent state to an opaque cloudy state. Also, as an image correction device, it becomes transparent at a first specific temperature,
A heat-sensitive sheet made of a reversible heat-sensitive recording material that becomes opaque and cloudy at a second specific temperature, and the heat-sensitive sheet on a manuscript paper! 3! a second specific temperature at which the portion that does not require copying can be switched from a transparent state to an opaque cloudy state;
and a heating member equipped with a heating head that can be set to an I-th specific temperature that can be switched from an opaque cloudy state to a transparent state.

[For production]

According to the configuration of the present invention, when it is necessary to correct a predetermined portion of a manuscript paper and make a copy, a transparent thermosensitive sheet is placed on the manuscript paper and the predetermined portion is heated with a heating member. , it is possible to make the document into an opaque cloudy state, and add characters to the opaque, cloudy state as necessary, thereby making it possible to correct the manuscript to be copied without altering the manuscript itself.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

A known reversible heat-sensitive recording material is used for the heat-sensitive sheet used in the image correction method of the present invention.

This reversible thermosensitive recording material can selectively achieve a cloudy state or a transparent state at room temperature depending on the heating temperature, and is known as a thermochrome material. It consists of organic low-molecular substances dispersed inside.

Such a reversible thermosensitive recording material has characteristics as shown in FIG. That is, it exhibits special properties at a first temperature tl higher than the room temperature L0 + a second temperature t2 higher than the room temperature t0. For example, a reversible thermosensitive recording material that is initially cloudy at room temperature t0 is heated to a first temperature t0.
1 and then room temperature L. When cooled to 100%, an extremely transparent state can be obtained. The reversible thermosensitive recording material, which is in a transparent state at room temperature t0, becomes cloudy when it is heated to a second temperature t2 higher than the first temperature t1 and then cooled to room temperature /Mto.

In FIG. 4, the solid line represents the case where the reversible thermosensitive recording material, which is initially in a cloudy state, is heated to the first temperature t1 and returned to room temperature L0 to become transparent, and the dotted line represents the reversible thermosensitive recording material, which is initially in the transparent state. The material is heated to a second temperature t2 and placed in the chamber.
The results show the case where the temperature was returned to o and a cloudy state was obtained.

Matrix materials for such reversible thermosensitive recording materials include polyester, polyamide, polyacrylate, polymethacrylate, polystyrene, silicone resin, polyvinyl chloride, vinylidene chloride-vinyl chloride copolymer, and vinylidene chloride-acrylonitrile copolymer. One or more polymers selected from thermoplastic resins such as polymers are used.

Examples of organic low-molecular substances include saturated or unsaturated mono- and dicarboxylic acids or their esters, amides and ammonium salts, saturated or unsaturated halogenated fatty acids or their esters, amides and ammonium salts, arylcarboxylic acids or these One or more substances selected from organic compounds having 10 to 30 carbon atoms such as esters, amides, and ammonium salts are used.

Particularly preferred substances include straight-chain saturated higher fatty acids such as palmitic acid, stearic acid, arachidic acid, and phenic acid, or their esters, ξ-dos, and ammonium salts.

FIG. 1 shows means for carrying out the image correction method of the present invention for partially deleting or correcting descriptions on a sheet of paper used for copying. As shown in FIG. 1, the aforementioned transparent thermal sheet 2 is placed on top of the document cover 1, and the portion of the document cover that needs to be deleted or corrected is placed on the heat-sensitive sheet 2. A heating head 4 of a pen-shaped heating member 3 heated to a temperature suitable for switching from a transparent state to a cloudy state is brought into contact with the heating head 4 of the pen-shaped heating member 3.

The outline of the pen-shaped heating member 3 is shown in FIG.
A heating head 4 having a predetermined width, a power line 5 for applying voltage to the heating head 4, a temperature (second temperature) at which the heat-sensitive sheet 2 is switched from a transparent state to a cloudy state, and a cloudy state. a temperature setting switch 6 that can set the temperature of the heating head 4 to a temperature (first temperature) at which the state is switched from to transparent state;
It is equipped with a heating width changeover switch 7 that can appropriately switch the heating width of the heating head.

Therefore, as shown in FIG. 2(a), place the transparent heat-sensitive sheet 2 on the original cover 1, and turn the temperature setting switch to the temperature (second temperature) that changes the transparent state of the heat-sensitive sheet to the cloudy state. When the heating head 4 of the pen-shaped heating member 3 set at 6 is brought into contact with the portion of the document paper that requires deletion or correction from above the thermal sheet 2, the portion of the document paper that requires deletion or correction is removed as shown in FIG. 2(b). The portions 2a, 2a, . . . of the thermal sheet 2 corresponding to the portions 1a, la, . . . of the paper become cloudy. Due to the cloudy state of the thermal sheet 2, part 1a of the manuscript paper
, la, . . . are erased, and new characters etc. can be written in these parts as necessary.

To return the cloudy part of the thermal sheet 2 to a transparent state for the next use, use the heating end 4 of the pen-shaped heating member 3.
By switching the temperature setting switch 6, the temperature is set to a temperature (first temperature) that changes the cloudy state to the transparent state, and the heating head 4 is brought into contact with the part of the heat-sensitive sheet 2 that is in the cloudy state. As a result, the heat-sensitive sheet 2 becomes transparent.

In addition, the heating head 4 of the pen-shaped heating member 3 can be heated to a second position by adjusting the heating width changeover switch 7 and appropriately switching the heating width of the heating head according to the difference in the width of characters, etc. that need to be deleted or corrected. As shown in Figure (b), the size of the cloudy part on which the heat-sensitive sheet 20 is formed can be changed as appropriate.

FIG. 3 shows one form of a heat-sensitive sheet, in which one side of a holder-shaped transparent substrate 8 folded in half is used as a heat-sensitive sheet baa, and between the heat-sensitive sheet 8a and the transparent support substrate 8b on the other side, a By sandwiching the original cover 1 that requires correction, the positioning of the thermal sheet 8a and the original cover 1 can be ensured, and the work can be carried out efficiently. As for the shape of the heat-sensitive sheet, it is possible to use a holder type sheet with heat-sensitive sheets on both sides, and it is also possible to use another shape that is different from the holder type type and can ensure the positioning of the original paper.

〔effect〕

The structure of the present invention has the advantage of being able to correct manuscript paper in a short time and with less waste and effort than conventional methods, and is a correction method in which there are many opportunities to copy while correcting a part of the original. It is simple and effective.

[Brief explanation of drawings]

Figure 1 is a schematic cross-sectional view of a structure for carrying out the method of the present invention, Figures 2 (a) and (b) are explanatory diagrams showing the state before and after the method of the present invention is applied, and Figure 3 is a thermosensitive FIG. 4 is a perspective view showing one form of the sheet, and a graph showing the characteristics of the reversible thermosensitive recording material. DESCRIPTION OF SYMBOLS 1... Manuscript paper, 2... Thermal sheet, 3... Pen type heating member, 4... Heating head.

Claims (2)

[Claims] (1) A thermosensitive sheet made of a reversible thermosensitive recording material that becomes transparent at a first specific temperature and becomes opaque and cloudy at a second specific temperature is placed on the manuscript paper, and the manuscript paper does not need to be copied. An image correction method characterized in that a heating head of a heating member is set at a second specific temperature and brought into contact with the portion, thereby switching the portion from a transparent state to an opaque cloudy state. (2) a thermosensitive sheet made of a reversible thermosensitive recording material that becomes transparent at a first specific temperature and becomes opaque and cloudy at a second specific temperature; and placing the thermosensitive sheet on a manuscript paper;
a heating member equipped with a heating head that can be set at a second specific temperature at which a portion that does not require copying can be switched from a transparent state to an opaque cloudy state; and a first specific temperature at which a portion that does not require copying can be switched from an opaque cloudy state to a transparent state. An image correction device comprising: