JP2010008698A - Electronic paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform punching or stapling in a display region without generating ink leakage or operation inferiority. <P>SOLUTION: A working region 12 (12a, 12b) for punching or stapling is provided in the display region 11, a control circuit and wiring are arranged to avoid the working region 12, and the inside of the working region 12 does not seal a display ink material. A stapling working region 12a is provided in four places of each corner part of a rectangular display region 11 or one place out of the four places. A punching working region 12b is provided in the vicinity of each side 11a, 11b, 11c, 11d of the rectangular display region 11 or one part out of each side, and marks 13 indicating the place of the working region are attached on each working region 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic paper that can be punched and stapled.

In recent years, research and development for making electronic paper thinner and flexible has progressed, and thin and bendable electronic paper has also appeared. Such electronic paper is used as a rewritable paper, a plurality of sheets are used together like conventional paper, and there is a demand for punch holes to be bound together and bound to a binder or stapled. was there. In view of this, an electronic paper that can be punched or stapled without causing any trouble in the function of the electronic paper has been proposed (see, for example, Patent Document 1). The electronic paper of Patent Document 1 has a configuration in which a punching region is provided at a corner or a side where there is no functional unit such as a display unit.
JP 2006-74311 A

  In the electronic paper disclosed in Patent Document 1, a region for punching and staples is provided not in the display region of the electronic paper but in a peripheral outer frame portion. For this reason, there is a problem that the area that can be used for display is reduced by the amount of the outer frame, or the size of the paper is increased by the amount of the outer frame.

  Considering the original purpose of use of paper, it is desirable that the paper has the same fixed size as that of the current paper, and a wide range of paper should be used for display as much as possible.

  The electronic paper display area contains electronic ink materials for display (various materials such as liquids and powders are contained), and there are circuits and wiring for controlling the display contents. If the display area is simply punched or stapled, various problems such as leakage of the encapsulated electronic ink material and malfunction due to disconnection of the wiring may occur.

  The present invention was devised to solve such problems, and an object thereof is to provide an electronic paper that can perform punching and stapling in a display area without causing ink leakage or malfunction. There is to do.

  In order to solve the above-described problems, the electronic paper of the present invention provides a work area for punching or stapling in the display area, and the control circuit and wiring are arranged so as to avoid the work area. Even if the area is wide, electronic paper that does not cause malfunction can be realized by drilling or staple.

  Further, by not sealing (filling) the display electronic ink material in the working area, it is possible to realize an electronic paper that does not cause ink leakage even when perforated or stapled.

  Here, it is preferable that the work area for the stapler is provided at four corners of the rectangular display area or a part of them. Even if the display in the display area is upside down by providing it at two corner corners on the diagonal of the display area or at four corner corners, one corner corner that matches the display direction The stapler can be stapled. Alternatively, the orientation of the electronic paper can be used both vertically and horizontally by providing it at two corners or four corners on each side of the display area. The stapler can be stapled at one corner. Thus, the user can use the electronic paper without worrying about its orientation.

  In addition, it is preferable that the drilling work area is provided in the vicinity of each of the upper, lower, left and right sides of the rectangular display area or in the vicinity of a part of each of the sides. By providing it near each side facing the left and right sides of the display area and / or near each side facing the top and bottom, even if the display in the display area is upside down, the side for matching the display direction can be used for filing. A hole can be drilled. However, it is possible to staple the work area for drilling, and it is also possible to make a hole in the work area for staple. Thereby, the user can use the electronic paper without worrying about the direction of the electronic paper.

  Moreover, you may drill in the manufacturing area in the work area for drilling. As a result, it is possible to avoid the failure of drilling holes outside the work area during drilling work, and because the drilling can be performed at an accurate position, the work area can be reduced to the minimum size, and electronic paper can be used accordingly. The displayable area can be made large.

  Further, according to the present invention, it is preferable to mark the work area on the work area. By attaching a mark, it is possible to clearly show the location where staples and holes can be made to the electronic paper user. Therefore, a staple stop mistake or a drilling mistake can be avoided in advance, so that it is possible to prevent the occurrence of a problem that the electronic paper is damaged.

  The mark may be printed in an inconspicuous color, or may be provided by providing unevenness on the surface of the work area. By printing in an inconspicuous color, even when a work area is provided in the display area, it is possible not to interfere with the display of the electronic paper. Further, by printing in an inconspicuous color, it is possible to reduce the transfer of the mark on the copy sheet even when a copy is taken with a black and white copying machine.

  Furthermore, it is desirable that the size of the electronic paper be the same standard size (A4 or the like) as the current paper. By doing so, it can be handled equivalent to the current paper. Specifically, it can be punched and stapled with the current paper, can be bound to an existing binder, can be stored for existing standard sizes, and can be used for distribution as well as existing paper It can be handled, and can be applied to existing copiers and scanners.

  In addition, it is desirable that the position where the stapler working area or the punching work area is provided is unified after the size of the electronic paper is set to a standard size. By doing so, when a plurality of electronic papers or current papers are combined and stapled or punched, a staple is simply confirmed by checking the position of the staple or punching work area of one electronic paper. Stopping and punching work can be performed, and it is possible to save the trouble of checking the position of the work area of all electronic papers, thereby improving work efficiency.

  According to the present invention, by providing a work area for punching or staples in the display area, it is not necessary to provide a binding margin for punching or staples around the display area as in the prior art. A wide display area can be taken. In addition, since the electronic ink material for display is not sealed in the work area, and wiring and circuits are not disposed, ink leakage or malfunction does not occur even if the work area is punched or stapled.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Description of basic configuration of electronic paper>
As one of the methods for realizing electronic paper, there is one configured to change the color when viewed from the outside by moving colored charged particles by an external electric field, thereby changing the display. . In this case, it can be further divided into several methods depending on the method of containing charged particles and what is contained in addition to charged particles. Each method will be described below.

(Method 1)
FIG. 11 shows the configuration of the present system 1, which is also described in JP-T-2001-500192. That is, black particles 101 and white particles 102 charged with opposite charges are sealed in the microcapsule 100 together with the transparent fluid 103, and the microcapsule 100 is sandwiched from above and below by the electrode 104, and further, a control circuit or wiring A structure in which the substrate 105 (not shown) is sandwiched from above and below is formed. The substrate 105 also plays a role of supporting the entire electronic paper. FIG. 11 shows a case where the black particles 101 are charged with negative charges and the white particles 102 are charged with positive charges. By applying an electric field through the electrode 104, the black and white charged particles are moved in opposite directions, whereby the display can be switched to black or white. Note that since the microcapsules 100 need to be used with a substantially uniform thickness, the microcapsules 100 and the resin film 106 are bonded to each other by an adhesive 107 after being arranged on the resin film 106. In the following description, the microcapsule 100, the resin film 106, and the adhesive 107 are collectively referred to as a microcapsule sheet 100S.

  In FIG. 11, two electrodes 104 and 104 are arranged on the upper substrate 105 side and two electrodes 104 and 104 are arranged on the lower substrate 105 side with respect to one microcapsule 100. That is, the movement of the black particles 101 and the white particles 102 of one microcapsule 100 is controlled by these four electrodes.

  For example, when attention is paid to the leftmost microcapsule 100 in FIG. 11, the two upper electrodes 104 and 104 corresponding to the microcapsule 100 are both applied to the negative polarity, and the lower two electrodes 104 and 104 are connected to each other. Both are applied to the positive polarity. Therefore, all the white particles 102 move to the upper part, and all the black particles 101 move to the lower part.

  When attention is paid to the rightmost microcapsule 100 in FIG. 11, the two upper electrodes 104 and 104 corresponding to the microcapsule 100 are both applied in positive polarity, and the lower two electrodes 104 and 104 are connected to each other. Both are applied to the negative polarity. Therefore, all the white particles 102 move to the lower part, and all the black particles 101 move to the upper part.

  When attention is paid to the microcapsule 100 in the center of FIG. 11, the left electrode 104 of the two upper electrodes 104 and 104 corresponding to the microcapsule 100 is applied to the negative polarity, and the right electrode 104 is applied. Is applied to the positive polarity. On the other hand, of the two lower electrodes 104, 104, the left electrode 104 is applied to the positive polarity, and the right electrode 104 is applied to the negative polarity. Therefore, half of the white particles 102 are attracted to the upper left electrode 104 and move to the upper left side in the microcapsule 100, and half of the black particles 101 are attracted to the upper right electrode 104 to move in the microcapsule 100. It has moved to the upper right. The remaining half of the white particles 102 is attracted to the lower right electrode 104 and moves to the lower right side in the microcapsule 100, and the remaining half of the black particles 101 is attracted to the lower left electrode 104 to be microcapsule 100. The inside is moving to the lower left side.

(Method 2)
FIG. 12 shows the configuration of the method 2 described in Japanese Patent Application Publication No. 2003-526817. That is, an emboss (indentation) 201 is formed so as to be adjacent to the flat resin 200 at a predetermined interval, and the charged white particles 202 and the colored fluid 203 are encapsulated in the indentation 201, and the sealing layer 204. With the lid covered, the electrode 205 is sandwiched from above and below, and is further sandwiched from above and below by substrates 206 and 206 on which control circuits and wiring (not shown) are formed. The substrate 206 also plays a role of supporting the entire electronic paper. FIG. 12 shows a case where the white particles 202 are negatively charged. By applying an electric field through the electrode 205 and moving the white particles 202, the display can be switched to white or a fluid liquid color.

(Method 3)
FIG. 13 shows a configuration of the present system 3, which is also described in Japanese Patent Application Laid-Open No. 2004-184620. In other words, a pair of electrodes 305 and 305 that are vertically opposed to each other are arranged with a predetermined gap in the front-rear and left-right directions, and the partition walls 301 are respectively disposed in the front-rear, left-and-right gap portions, whereby the electrodes 305 and the partition walls 301 are disposed. A plurality of small chambers 306 separated from each other are formed, and in each small chamber 306, black particles 302 and white particles 303 charged with opposite charges are sealed together with air 304. Reference numeral 307 in the figure denotes a substrate that supports the entire electronic paper. Although not shown, a control circuit and wiring are formed. By applying an electric field in the small chamber 306 through the electrode 305, the black particles 302 and the white particles 303 are moved in opposite directions, whereby the display can be switched to black or white.

  In any of the above methods, if punch punching or stapling is performed in the state as it is, the sealing is broken, and the charged particles and the fluid that has been sealed may leak out. In the following description, electronic ink materials such as charged particles and fluids are simply referred to as ink. In order to prevent ink leakage associated with punching and staples, it is sufficient that the ink is not sealed in the target area for punching and staples. Therefore, the electronic paper according to the present invention has a structure in which ink is not sealed in the work area for punching and stapling.

<Description of Electronic Paper According to Embodiment of the Present Invention>
Hereinafter, electronic paper according to an embodiment of the present invention will be described.

  As shown in FIG. 1, the electronic paper 1 according to the present embodiment is provided with a work area 12 (12a, 12b) for punching or stapling in a display area 11, and a circuit and wiring for control are provided in this work area 12. It is arranged to avoid. Further, the work area 12 has a structure in which display ink is not sealed. Thereby, even if the display area 11 is wide, it is possible to realize an electronic paper that does not cause ink leakage or malfunction due to punching or stapling.

  Here, it is preferable to provide the work area 12a for stapler stop at four corners of the rectangular display area 11 or at a part of them. In the present embodiment, an example in which work areas 12a are provided at all four corners is shown. The work area 12b for drilling is preferably provided in the vicinity of the upper, lower, left and right sides 11a, 11b, 11c, 11d of the rectangular display area 11 or in the vicinity of a part of each side. In the present embodiment, an example is shown in which the work area 12b is provided in the vicinity of all sides of the top, bottom, left, and right. By providing the work areas 12a and 12b in this way, even if the display on the display area 11 is turned upside down, it can be stapled at the corners according to the display direction and adjusted to the display direction. A filing hole can be made on the other side.

  Here, a method for forming the work area 12 (12a, 12b) that does not seal ink will be described for each of the three methods.

(Method of forming work area in case of method 1)
In the case where the charged particles 101, 102 and the transparent fluid 103 are sealed in the microcapsule 100 shown in FIG. 11, before the microcapsule sheet 100S is sandwiched between the electrodes 104 as shown in a partially enlarged view in FIG. In addition, the work area 12 for punching holes and staples is cut out in advance. As a result, even after the electronic paper 1 is manufactured by being sandwiched from above and below by the electrode 104 and further sandwiched by the substrate 105, the ink leaks because there is no ink in that portion even if a hole is made in the work area 12. There is no.

(Method for forming work area in case of method 2)
In the case where the charged particles 202 and the colored fluid 203 are sealed using the emboss 201 and the sealing layer 204 shown in FIG. 12, as shown in FIG. The emboss 201 is filled with a material of the same material as the resin 200 or a material different from the resin 200 (indicated by hatching with reference numeral 207 in FIG. 3), so that the ink is applied to the work area 12. It can be prevented from being sealed. In FIG. 3, the resin 207 is embedded in only one emboss 201. However, when the work area 12 extends over a plurality of peripheral embosses, the resin 207 is also embedded in these embosses 201. . Thus, even if a hole is made in the work area 12, ink does not leak. In addition, when filling with the material of the same material as the resin 200, when embossing 201 is molded in the resin 200, it can be realized by not molding the embossing only at a corresponding portion of the hole, so that it can be handled without increasing the manufacturing procedure. Is possible. On the other hand, when filling with a material different from that of the resin 200, a material that is softer than the resin 200 can be used to facilitate subsequent drilling operations and the like.

(Method of forming work area in method 3)
In the case where the charged particles 302 and 303 and the air 304 are sealed in the small room 306 separated by the electrode 305 and the partition wall 301 shown in FIG. 13, as shown in FIG. The work room 306 is filled with a material made of the same material as the partition wall 301 or a material different from the partition wall 301 (shown by hatching with reference numeral 308 in FIG. 4). Ink 12 can be prevented from being sealed. In FIG. 4, the embedding material 308 is embedded only in one small room 306, but when the work area 12 extends over a plurality of surrounding small rooms, naturally, the embedding material is also filled in these small rooms 306. 308 is filled. Thus, even if a hole is made in the work area 12, ink does not leak. In addition, when filling with the material of the same material as the partition 301, since it can shape | mold integrally with the partition 301, it can respond, without increasing the procedure at the time of manufacture. On the other hand, when the material is filled with a material different from that of the partition wall 301, a material softer than the material of the partition wall 301 is used, so that subsequent drilling operations and the like can be easily performed.

  Next, an arrangement structure of electrodes and wirings for applying an external electric field to the ink portion will be described.

  The electrode arrangement can be roughly divided into a segment arrangement in which electrodes having a shape to be displayed are prepared and a matrix arrangement in which small electrodes are regularly arranged. In this embodiment, the matrix arrangement has a high degree of freedom in display. The case will be described.

  The matrix arrangement can be further divided into an active matrix system and a simple matrix system, and each case will be described.

  In the case of the active matrix system, as shown in FIG. 6, wirings for controlling the potential of the electrode 401 run vertically and horizontally and run in a grid pattern. In the following description, the vertical wiring is referred to as column wiring 402, and the horizontal wiring is referred to as row wiring 403. In FIG. 6 and FIG. 5 according to the present embodiment, both the column wiring and the row wiring are indicated by thick solid lines. FIG. 6B shows an enlarged view of the lower right circle 404 in FIG. 6A. As shown in FIG. 5B, the electrode 401 is connected to the column wiring 402 and the row wiring 403 via the TFT transistor 406 and the branch wiring 407, so that the potential of each electrode 401 can be controlled. ing. 11 to 13 show that individual electrodes are arranged above and below the ink portion, but in the active matrix system, the electrode 401, the column wiring 402, and the row wiring 403 are located above or below the ink portion. The electrode on the opposite side, which is present on either side, is not a separate electrode but has a solid electrode structure on one side.

  In the wiring state shown in FIG. 6, when drilling is performed, the column wiring 402 and the row wiring 403 corresponding to the hole position 405 are cut, and it becomes impossible to control all the vertical and horizontal electrodes of the hole. In addition, when performing staple fixing, in addition to cutting the wiring by drilling holes, a short circuit occurs between different row wirings, between different column wirings, or between row wirings and column wirings through the staples. There is a possibility that it will not be broken.

  On the other hand, in this embodiment, as shown in FIG. 5, the wiring of the work area 12 to be drilled or stapled is preliminarily avoided (to bypass) the work area 12. At this time, the electrode 401 around the work area 12 is removed, and the place is used as an area for detour wiring. Although this area is not a target for punching or staples, the electrode 401 is not present and is not used for display. Therefore, not only the work area 12 but also this area may stop sealing the ink material.

  In the case of the simple matrix method, as shown in FIG. 9, the strip-shaped electrodes are arranged in a lattice pattern so as to intersect vertically and horizontally. In the following description, the vertical electrodes are referred to as column electrodes 501 and the horizontal electrodes are referred to as row electrodes 502. In FIG. 9 and FIGS. 7 and 8 according to the present embodiment, both the column wiring and the row wiring are indicated by thick solid lines. The simple matrix method has a structure in which the ink part is sandwiched from above and below by the column electrode and the row electrode (whichever is good). By applying a potential to the specific column electrode and the row electrode, the ink is applied to the intersecting part 503. The electric field can be controlled.

  In the electrode arrangement shown in FIG. 9, when drilling is performed, the column electrode 501 and the row electrode 502 corresponding to the hole position 504 are cut, and electric field control, that is, display control of all intersecting portions 503 in the vertical direction or horizontal direction of the hole is performed. It becomes impossible. In addition, when staple is performed, a short circuit may occur between different row electrodes, between different column electrodes, or between a row electrode and a column electrode through a staple, and control may not be performed correctly.

  On the other hand, in this embodiment, as shown in FIG. 7 (column electrode) and FIG. 8 (row electrode), the electrode of the work area 12 to be drilled or stapled is avoided in advance. Arranged (bypassed). At this time, the electrode width is narrow and detoured around the work area 12, and normal display cannot be performed in this area. Therefore, not only the work area 12 but also this area stops sealing the ink material. May be.

  In this way, ink is not sealed in the work area 12 where there is a possibility of making a hole, and ink leakage and malfunction may occur even when a hole is made in the work area 12 by avoiding wiring. There is no.

  However, when the ink is encapsulated, or the like, the ink area is sealed in the work area 12 if the structure has a structure that minimizes the influence of ink leakage when the hole is formed.

  Although illustration is omitted, similarly in the case of the segment arrangement, it is necessary to avoid the wiring where there is a possibility of making a hole, but generally the wiring density is lower than that of the matrix arrangement. Because it is low, it is easy to route around where there is a possibility of drilling holes.

  With the above configuration, ink is not sealed in the work area 12 where there is a possibility of making a hole, and even if a hole is made in the work area 12 by avoiding wiring, ink leakage or malfunction occurs. Never do. However, if a hole is accidentally drilled in other areas, ink leakage or malfunction may occur. Therefore, it is necessary to clearly indicate to the user of the electronic paper a region where a hole can be formed.

  Therefore, in this embodiment, as shown in FIGS. 1 and 10, a mark 13 indicating a work area is marked on the work area 12. FIG. 10A is an example of a pattern of a mark (hole mark) indicating a place where a punch hole may be formed, and FIG. 10B is a pattern of a mark (needle mark) indicating a place where a staple can be stapled. It is an example. However, if such a pattern is displayed in a conspicuous color or dark print, it may interfere with the display of the original electronic paper. Therefore, in the present embodiment, the pattern is printed with an inconspicuous color. Specifically, it prints in light blue or green. In this case, it is not only inconspicuous, but also when the copy is taken with a black and white copying machine, the display of the pattern on the copy can be reduced. As another embodiment, there is a method in which the surface of the electronic paper 1 is made uneven (engraved) and the corresponding area is displayed.

  In the above-described embodiment, the corners of the electronic paper 1 are used for staples, and the side portions are used for punching. The marks 13 are distinguished from each other. However, such distinction is made between staples and punches. There is no need. In other words, the mark 13 shows only a place where drilling or stapling can be performed regardless of the design, and whether the work area of the mark 13 is to be drilled or stapled is determined by the user. Of freedom.

  Moreover, in the said embodiment, although the work area | region 12 is provided in the perimeter as shown in FIG. 1 so that the direction at the time of using the electronic paper 1 may not be restrict | limited, the direction which uses the electronic paper 1 is used. If it can be limited, the work area 12 may be formed only at a location in the direction. This makes it possible to secure a wider display area.

  Further, in FIG. 1, the work area 12b for drilling is shown to be provided at two places on one side for punch holes. However, the present invention is not limited to this. May be provided.

  Moreover, the user does not perform the drilling later, but may perform the drilling in advance in the manufacturing process of the electronic paper. By making a hole in the manufacturing process, it is possible to eliminate the failure to make a hole outside the work area when drilling, and the work area 12b is also the minimum necessary size because the hole can be made at an accurate position. The displayable area of the electronic paper can be enlarged accordingly.

  Moreover, in the said embodiment, although the shape of work area | region 12a, 12b was illustrated in the square, it is not limited to a square and can take arbitrary shapes.

  The size of the electronic paper of the present embodiment is the same standard size (A4, etc.) as the current paper, so that it can be punched and stapled together with the current paper, and can be bound to an existing binder. In addition, storage for existing standard sizes can be used, and it can be handled in the same way as existing paper in distribution, and can be handled in the same way as current paper, such as being able to be loaded on an existing copier or scanner. In addition, by unifying the position where the stapler or punching work area is provided, all electronic papers can be worked on when punching holes or punching holes together. Without checking the position of each area, it is possible to work on staples and punch holes just by checking the position of the staple or punching work area of a piece of electronic paper. Can be raised. In particular, when electronic paper or conventional paper is stacked, if the top is electronic paper, just check the work area of the top electronic paper, so you can staple and punch holes. It is possible to make the work efficiency almost the same as when stapled or punched with only conventional paper.

It is a whole block diagram of the electronic paper concerning this invention. It is explanatory drawing which shows the mode of drilling to the sheet | seat in which the microcapsule was spread. It is explanatory drawing of the formation method of the working area in the case of the method 2. It is explanatory drawing of the formation method of the work area in the case of the system 3. FIG. It is explanatory drawing of the state which has arrange | positioned wiring avoiding the work area in the case of an active matrix system. It is explanatory drawing of the arrangement | positioning state of the wiring in the case of an active matrix system. It is explanatory drawing of the state which has arrange | positioned the vertical electrode avoiding the work area | region in the case of a simple matrix system. It is explanatory drawing of the state which has arrange | positioned the horizontal electrode avoiding the work area | region in the case of a simple matrix system. It is explanatory drawing of the arrangement | positioning state of the electrode in the case of a simple matrix system. It is explanatory drawing which shows the example of the mark formed in a work area. It is a structural diagram of the electronic paper corresponding to the system 1 which seals ink using a microcapsule. It is a block diagram of the electronic paper corresponding to the system 2 which seals ink using embossing. It is a structural diagram of the electronic paper corresponding to the system 3 which divides and seals an ink with a partition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic paper 11 Display area 12 (12a, 12b) Work area 13 Mark 100 Microcapsule 100S Microcapsule sheet 101 Black particle 102 White particle 103 Transparent fluid liquid 104 Electrode 105 Substrate 106 Resin film 107 Adhesive 200 Resin 201 Emboss (dent)
202 White particles 203 Colored fluid 204 Sealing layer 205 Electrode 206 Substrate 207 Resin 301 Partition 302 Black particles 303 White particles 304 Air 305 Electrode 306 Small room 307 Substrate 401 Electrode 402 Column wiring 403 Row wiring 406 TFT transistor 501 Column electrode 502 Row electrode

Claims (16)

  An electronic paper, wherein a work area for punching or stapling is provided in a display area, and a control circuit and wiring are arranged so as to avoid the work area. The electronic paper according to claim 1,
Electronic paper characterized by not sealing display electronic ink material in the work area. In the electronic paper according to claim 1 or 2,
The stapler-stopping work area is provided at four corners of the rectangular display area or at a part of the four places. In the electronic paper according to claim 1 or 2,
The electronic paper, wherein the work area for drilling is provided in the vicinity of each side of the rectangular display area or in the vicinity of a part of the sides. The electronic paper according to claim 4,
An electronic paper, wherein a hole is previously drilled in the drilling work area. In the electronic paper according to claim 1 or 2,
An electronic paper, wherein a mark indicating the location of the work area is marked on the work area. The electronic paper according to claim 6,
The electronic paper is characterized in that the mark is printed in an inconspicuous color. The electronic paper according to claim 6,
The electronic paper is characterized in that the mark is provided by making irregularities on the surface of the work area. The electronic paper according to claim 3,
An electronic paper, wherein a mark indicating the location of the work area is marked on the work area. The electronic paper according to claim 9, wherein
The electronic paper is characterized in that the mark is printed in an inconspicuous color. The electronic paper according to claim 9, wherein
The electronic paper is characterized in that the mark is provided by making irregularities on the surface of the work area. The electronic paper according to claim 4,
An electronic paper, wherein a mark indicating the location of the work area is marked on the work area. The electronic paper according to claim 12,
The electronic paper is characterized in that the mark is printed in an inconspicuous color. The electronic paper according to claim 12,
The electronic paper is characterized in that the mark is provided by making irregularities on the surface of the work area. In the electronic paper according to claim 1 or 2,
An electronic paper characterized in that the size of the electronic paper is matched to the standard size of conventional paper. The electronic paper according to claim 15,
An electronic paper characterized in that a work area for punching or stapling is provided at a fixed position.

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