Portable erasers and their holding styles
The portable eraser with an adhesive layer addresses the issue of storage and adhesion, enabling convenient use and storage on any paper surface, ensuring strong adhesion and preventing loss.
Patent Information
- Application Number
- JP2023076415
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-05-06
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2043-05-06
AI Technical Summary
Conventional methods for carrying and using erasers do not provide a specific storage location, leading to time-consuming searches when needed, and adhesive solutions either fail to adhere strongly enough to prevent falling or are too weak to support the eraser's weight.
A portable eraser with an adhesive layer that adheres to any paper surface, allowing it to be stored and carried without falling, featuring two holding forms: one for open notebooks and one for closed, ensuring strong adhesion and ease of removal.
The eraser can be used and stored conveniently on any page, preventing loss and facilitating immediate erasing, while maintaining adhesion without cracking or falling.
Smart Images

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Abstract
Description
[Technical Field]
[0001] The present invention is a portable eraser equipped with a support provided with an adhesive layer having adhesiveness and peelability, and aims to propose a holding form in which this portable eraser can be stuck to any paper surface of a notebook or planner. [Background technology]
[0002] Methods for carrying an eraser and erasing include using a writing implement with an eraser attached to a clip, as in JP 2011-31424 A, and using an eraser holder with a clip, as in JP 2017-159525 A. These methods are sufficient for carrying an eraser and erasing.
[0003] However, the conventional methods of carrying an eraser, such as these, do not suggest a specific storage location for the eraser, and there is a problem that it may take time and effort to search for the eraser when starting to erase. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-31424
[0005] [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-159525 Summary of the Invention [Problem to be solved by the invention]
[0006] To improve the convenience of erasing work by eliminating the need to search for a place to store an eraser when carrying it around.
[0007] The second problem is to prevent a portable eraser, which is used as a solution to the first problem and has an adhesive layer with adhesiveness and releasability, from falling off from the surface to which it is attached due to its weight when carried.
[0008] Regarding the second issue, reducing the weight of the eraser reduces the part of the eraser that erases, which is detrimental to the erasing function, and strengthening the adhesive strength of the support (SP) relative to the weight of the eraser is detrimental to the releasability function.
[0009] These countermeasures for each component part were detrimental to the functions of the other components and contradicted each other, so it was necessary to find an optimal form for the mutual functions of the components. [Means for solving the problem]
[0010] By utilizing the form of a portable eraser in which an adhesive surface (AS) having an adhesive layer with adhesiveness and releasability is attached to the eraser, the portable eraser holding form (HS) can be configured between any paper surface (TP) of a notebook or diary. The portable eraser holding form (HS) can be configured not only between a notebook or diary, but also between any paper surface (TP) of a book with multiple pages bound together.
[0011] The holding form (HS) of this portable eraser has two forms: a holding form (HS1) when the notebook or diary is open, and a holding form (HS2) when the notebook or diary is closed.
[0012] The holding form (HS1) is a form in which the adhesive surface (AS) of the support sheet portion (SS) is attached to any paper surface (TP) so that the eraser is placed on the outside of the side (NW) of the aforementioned any paper surface (TP).
[0013] By using the storage form (HS1), any paper surface (TP) of a notebook or planner can be used and stored as the place to use the portable eraser, eliminating the need to search for the eraser. This storage form (HS1) is the solution to the first problem.
[0014] In the holding form (HS1) in which the eraser is placed on the outside of any paper surface (TP), the notebook or diary is closed, the portable eraser is sandwiched between the paper surfaces, and the adhesive surface (AS) is brought into close contact to form the holding form (HS2), whereby the portable eraser can be carried around.
[0015] This holding form (HS2) makes the adhesive strength of the adhesive surface (AS) stronger than the force that peels the support sheet part (SS) from the paper surface due to the weight of the eraser, making it possible to prevent the portable eraser from falling off. This holding form (HS2) is the solution to the second problem.
[0016] The holding form (HS2) prevents the eraser from falling off, allowing you to carry a portable eraser with you. [Effects of the Invention]
[0017] By using any page of a notebook or a diary as a place to use and store the portable eraser, the trouble of searching for the eraser can be eliminated and erasing work can be performed immediately.
[0018] In the holding form (HS1) and holding form (HS2), the side of the notebook or planner supports the weight of the eraser, preventing the portable eraser from falling off.
[0019] The holding form (HS2) allows the adhesive surface (AS) to be sandwiched between two pieces of paper, making it possible to carry the portable eraser.
[0020] This portable eraser serves as a marker for the location of use in a notebook or planner, and multiple portable erasers can be attached to any page of a notebook or planner.
[0021] When erasing by pinching the top surface of the support plate (SU), the overlapping portion (LV1), the eraser, and the bottom plate (SB) with your fingers from top to bottom in the Z direction, or when peeling the portable eraser off any paper, the support plate portion of this portable eraser supports the eraser's curvature, preventing the eraser from cracking.
[0022] As mentioned above, by pinching the upper surface of the support plate (SU), the overlapping portion (LV1), the eraser, and the bottom plate (SB) with your fingers from top to bottom in the Z direction, you can smoothly perform the series of operations of taking the portable eraser out of its storage location, erasing the characters, and then storing the portable eraser back in its storage location. [Brief explanation of the drawings]
[0023] [Figure 1] FIG. 1 is a perspective view showing the holding form (HS1) in an embodiment of the portable eraser. [Figure 2] FIG. 1 is a perspective view showing the holding form (HS2) in an embodiment of the portable eraser. [Figure 3] FIG. 1 is a perspective view of the portable eraser according to Example 1. [Figure 4] FIG. 1 is a perspective view of the portable eraser according to Example 1. [Figure 5] FIG. 1 is a perspective view of the portable eraser according to Example 1. [Figure 6] FIG. 1 is a perspective view of the portable eraser according to Example 1. [Figure 7] FIG. 10 is a perspective view of the portable eraser according to the second embodiment. [Figure 8] FIG. 10 is a perspective view including a portion in Example 2 and a portion in Example 3 of the portable eraser. [Figure 9] FIG. 10 is a perspective view of the portable eraser according to the third embodiment. [Figure 10] FIG. 10 is a perspective view of the portable eraser according to Example 4. DETAILED DESCRIPTION OF THE INVENTION
[0024] Figure 1 shows the holding configuration (HS1) described in claim 1 when the notebook or planner is open. The portable eraser has a support sheet portion (SS) with an adhesive surface on one side and a support plate portion (SU) attached, and the support sheet portion (SS) is attached to any paper surface (TP) so that the eraser (ER) is on the outside of the side (NW) of the notebook or planner. This configuration is characterized by the fact that the support plate (SU) curves due to the weight of the eraser (ER), supporting the eraser (ER) on the side (NW) of the notebook or planner. The optional paper surface (TP) to which the portable eraser is attached is the storage location (HP) and use location (UP) of the portable eraser. Figure 2 shows the holding configuration (HS2) described in claim 1 when the notebook or planner is closed. When closing the notebook or planner, the adhesive surface (AS) of the support sheet part (SS) is attached to any paper surface (TP) and the eraser part is placed on the outside edge of the notebook, so that it can be carried around. [Example]
[0025] Figures 3, 4, 5 and 6 show Example 1 of the portable eraser set forth in claim 1. In Figure 3, the support sheet portion (SS) and the support plate portion (SU), which are components of the support body (SP), are shown separately for the sake of explanation.
[0026] In FIG. 4, the support sheet portion (SS) and the support plate portion (SU) are not shown separately, but are shown as an integrated support (SP).
[0027] The support plate portion (SU) shown in Figure 3 has a shape that covers a part of the eraser (ER). Also, as shown in Figures 3 and 6, in the Z direction of the XYZ coordinate system, the support plate portion (SU) has an overlapping portion (LV1) shown as a gray area between it and a part of the upper surface of the eraser (ER). This allows it to support the eraser (ER).
[0028] The adhesive layer (AS) on one side of the support sheet portion (SS) shown in Figure 5 is attached to any paper surface (TP) of a notebook or planner, as shown in Figure 1 above.
[0029] Figure 6 is a view from below in the Z direction, with the eraser (ER) removed, and the sides (SW1), (SW2) and bottom plate (SB) of the support plate portion (SU) being transparent, with the overlapping portion (LV1) shown in gray. This gray portion is the overlapping portion (LV1) of the support plate portion (SU) and the eraser (ER). [Example]
[0030] Figure 7 shows the configuration of the short side direction (DS) and long side direction (DL) of the support sheet portion (SS) described in claim 2. In this configuration, the eraser (ER) supported by the support plate (SU) is located in the short side direction (DS) of the support sheet portion (SS).
[0031] Figures 7 and 8 show Claim 4 The overlapping portion (LV2) is the portion where one end of the support sheet portion (SS) in the longitudinal direction (DL) and the support plate portion (SU) overlap in the Z direction. [Example]
[0032] Figure 8 shows Claim 3 This shows a configuration in which multiple adhesive layers are formed intermittently on the XY plane on the adhesive surface (AS) of the support sheet portion (SS) described in 1. The spacing between the individual adhesive layers in the short direction (DS) is wider than the spacing between the individual adhesive layers in the long direction (DL).
[0033] Figure 9 shows Claims 3 and 4The diagram shows the configuration described in . The support sheet portion (SS) is transparent, and the adhesive surface (AS) is gray. It also shows that the intentional peeling direction (DR) of the adhesive surface (AS) of the support sheet portion (SS) is oblique to the longitudinal direction (DL). The contact area (LC) between the adhesive surface (AS) of the peeling portion and the optional paper surface (TP) indicates the boundary between the peeled and unpeeled portions of the support sheet portion (SS). Because the direction of the contact area (LC) is oblique to the transverse direction (DS) and the longitudinal direction (DL), the spacing between the individual adhesive layers in the transverse direction (DS) is wider, resulting in a smaller contact area (LC). This reduces the force required to peel the support sheet portion (SS) from the optional paper surface (TP), making it easier to peel the support sheet portion (SS) from the optional paper surface (TP) when intentionally peeling it. On the other hand, in this configuration, the influence of the weight of the eraser (ER) on the adhesive strength of the adhesive surface (AS) in response to the force used to peel the support sheet portion (SS) from the paper surface can be reduced because the short direction (DS) is in the direction of the side (NW) of any paper surface (TP), and the area of the adhesive surface (AS) in this (NW) direction can be made wider. [Example]
[0034] Figure 10 shows the form described in claim 5. The form described in claims 1 and 2 has the side (SW1), side (SW2) and bottom plate (SB) of the support plate portion (SU) deleted, and the overlapping portion (LV1) between the support plate portion (SU) and the upper surface of the eraser (ER) is shown in gray, and this portion has an adhesive layer (AS2), and this portion is the form where the support plate portion (SU) and the eraser (ER) are joined. [Explanation of symbols]
[0035] ER Eraser HS1 retention form HS2 retention form TP Any page UP location HP Storage Location SP support SS support sheet part SU support part AS adhesive surface AS2 adhesive layer LV1 overlapping area LV2 overlapping area Northwest side SW1 side SW2 side SB bottom plate DS Short side direction DL Longitudinal DR Peeling direction LC contact part
Claims
1. The present invention is a portable eraser, and provides a holding form configured between this portable eraser and any paper surface (TP) of a set of multiple sheets of paper, and the portable eraser has a form in which a support (SP) is attached to the eraser (ER), and the support (SP) has a support sheet portion (SS) on the XY plane of the XYZ coordinate system, and has a support plate portion (SU) integrated with this, and the support sheet portion (SS) has an adhesive having adhesiveness and releasability on one side on the XY plane, The support plate portion (SU) has an adhesive surface (AS) having an adhesive layer, and the support plate portion (SU) has an overlapping portion (LV1) with a part of the upper surface of the eraser (ER) in the Z direction of the XYZ coordinate system, and the support plate portion (SU) has opposing side surfaces (SW1) and (SW2), and then has a bottom plate (SB) that contacts the lower parts of the side surfaces (SW1) and (SW2), and therefore the support plate portion (SU) has a shape that covers a part of the eraser (ER), and can be attached to any paper surface (TP) and a portable eraser as described above. The holding form (HS1) between the eraser and the support sheet portion (SS) has a form in which the adhesive surface (AS) of the support sheet portion (SS) is attached to the arbitrary paper surface (TP) so that the eraser (ER) is placed on the outside of the side (NW) of the arbitrary paper surface (TP). In this holding form (HS1), the arbitrary paper surface (TP) and another paper surface are overlapped and closed to form a holding form (HS2). The adhesive surface (AS) of the support sheet portion (SS) is tightly attached between the overlapping and closed paper surfaces to form the eraser (ER). The portable eraser has a feature that the adhesive force of the adhesive surface (AS) is stronger than the force to peel off the support sheet part (SS) from the paper surface due to the weight of the paper, preventing the portable eraser from falling off and allowing the portable eraser to be carried, and any paper surface (TP) to which the portable eraser is stuck in this holding form (HS1) and holding form (HS2) becomes the place of use (UP) and the place of storage (HP) of the portable eraser, thereby eliminating the need to search for the eraser when starting to erase.
2. In claim 1, the support sheet portion (SS) has a form having a short side direction (DS) and a long side direction (DL), and the eraser (ER) supported by the support plate portion (SU) described in claim 1 is positioned in the short side direction (DS) of the support sheet portion (SS). Due to this form, in the holding form (HS1) of claim 1, the side (NW) of any paper surface (TP) is positioned in the short side direction (DS) of the adhesive surface (AS) of the support sheet portion (SS), so the area of the adhesive surface (AS) in this side (NW) direction is increased, and therefore the adhesive strength of the adhesive surface (AS) is stronger against the force exerted by the weight of the eraser (ER) to peel the support sheet portion (SS) from the paper surface, preventing the eraser from falling off. This portable eraser has the following characteristics.
3. In claim 2, the adhesive layer of the adhesive surface (AS) of the support sheet portion (SS) has a form in which a plurality of adhesive layers are formed intermittently on the XY plane, and in contrast to a form (ES) in which the intervals between the individual adhesive layers in the short direction (DS) and the long direction (DL) are equal, the form (WS) has a form in which the intervals between the individual adhesive layers in the short direction (DS) are wider than the intervals between the individual adhesive layers in the long direction (DL), and in this form (WS), a contact portion (LC) between an arbitrary paper surface (TP) and the adhesive surface (AS) on the boundary between a part where the support sheet portion (SS) has been peeled and a part where it has not been peeled is larger than the contact portion (LC) in the form (ES) in the case where the direction (DR) in which the adhesive surface (AS) is intentionally peeled is oblique to the long direction (DL). This portable eraser has the characteristic that the force required to peel the support sheet part (SS) from any paper surface (TP) can be weakened, making it easier to peel.
4. A portable eraser as claimed in claim 3, characterized in that it has an overlapping portion (LV2) in the Z direction between one end of the longitudinal direction (DL) of the support sheet portion (SS) and the support plate portion (SU), and when a force to peel the support sheet portion (SS) from any paper surface (TP) is applied to the overlapping portion (LV2), the strength of the support sheet portion (SS) against tearing due to this peeling force is improved.
5. In claims 1 and 2, the side (SW1), side (SW2) and bottom plate (SB) of the support plate portion (SU) are deleted, and the overlapping portion (LV1) shown in claim 1 has an adhesive layer (AS2), and the support plate portion (SU) and the top surface of the eraser (ER) are joined by the adhesive layer (AS2).
Citation Information
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