bookmark
A flexible, protruding bookmark design addresses the inconveniences of traditional bookmarks by ensuring stability and visibility, offering enhanced convenience and efficiency in reading.
Patent Information
- Application Number
- JP2025021941
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-08-26
AI Technical Summary
Conventional bookmarks are inconvenient due to shifting, falling out, and getting lost, and existing solutions do not provide sufficient convenience beyond the simplicity of insertion.
A flexible, thin, rectangular bookmark with a width that protrudes beyond the book, securely held in place, serving as a stable marker and allowing easy retrieval.
Prevents shifting and loss, provides a clear marker for easy resumption of reading, and offers aesthetic appeal and additional functions like transparency and decoration, enhancing reading efficiency.
Smart Images

Figure 2026136436000001_ABST
Abstract
Description
Technical Field
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[0001] The present invention relates to a bookmark that can be used and enjoyed for various things such as reading and studying. In addition to books, the bookmark of the present invention can be used for paper media with pages such as notebooks, diaries, planners, passbooks, and stamp books (hereinafter referred to as books, etc.).
Background Art
[0002] Many conventional bookmarks are made of small pieces of paper. They are simple and convenient, but there are many inconveniences such as shifting, falling off, and getting lost when inserted into a book. There are also some convenient ones with various ideas like the following bookmarks, but they have both advantages and disadvantages. They are very convenient but tend to fall off easily, or they can be firmly attached but require some effort. Eventually, it seems that people are using something nearby as a substitute for a bookmark instead. After all, the simplest operation of just inserting is the most convenient for a bookmark. If there is a bookmark that doesn't shift, fall off, or get lost just by inserting it, the inconveniences of conventional bookmarks can be solved.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Patent Document 2
Patent Document 3
[0004] The problem this invention aims to solve is to provide a highly convenient bookmark that facilitates efficient reading and learning, eliminates the inconveniences associated with traditional bookmarks, and allows for stress-free concentration. Conventional bookmarks were simple and convenient, but they also had drawbacks such as shifting between pages, falling out, and getting lost after being inserted. It seems that people continued to use them primarily for their function of inserting pages despite these inconveniences, and although there are now many convenient bookmarks available, none seem to offer a level of convenience beyond the simplicity of simply inserting a bookmark. The bookmark of this invention is simply inserted. It provides a bookmark that combines the simplicity of conventional bookmarks with the inconveniences of traditional bookmarks, while greatly incorporating convenience and aesthetic appeal. [Means for solving the problem]
[0005] The bookmark of this invention was created to solve the aforementioned problems. By using a bookmark made of a flexible, thin, rectangular, flat sheet that is large enough to cover the entire printed area of the book or notebook being used, and has a width that protrudes beyond the book or notebook, it is possible to insert it deep into the medium, and most of the bookmark is held in place by the medium, making it stable. This prevents the bookmark from shifting between pages, falling out, or getting lost. When carrying the medium, the bookmark will not fall out as long as you are holding the medium, and even if it does fall, its size makes it easy to notice and find, thus preventing loss.
[0006] Furthermore, the shape of the bookmark, with its protruding portion, serves as a large marker that always indicates the reading position. When reading again, there is no need to search for the bookmark; one can simply open the protruding portion and immediately resume reading. Moreover, the book can be opened by holding any part of the bookmark along its vertical edge. In summary, the extremely simple shape and the extremely simple way it is inserted provide the basis for solving the problems of conventional bookmarks, which, while simple, had their inconveniences. [Effects of the Invention]
[0007] All the effects of the bookmark of this invention stem from its shape. Unlike conventional bookmarks, this bookmark is almost the same size as the book it is used in, but its width is slightly larger along the vertical side, so when it is placed in a book, its width protrudes. This shape plays a significant role in producing various effects. By simply placing this extremely simple bookmark in a book, it produces a variety of the following effects.
[0008] The bookmark of this invention, like conventional bookmarks, is simply inserted into books or other materials. In addition to the simplicity of conventional bookmarks, it offers several advantages, primarily due to its size. This bookmark can be inserted deep into books, so most of it is securely held in place, preventing it from shifting or falling out between pages. Furthermore, because it doesn't get buried in the book, there's no need to search for it when reading again, allowing you to immediately continue reading. Also, if it falls, you can easily notice and find it, preventing loss.
[0009] Next is its shape. Because it has a part that protrudes from the width of the medium it is used with, when using it with books, simply inserting this bookmark at the point where you left off or on the page you need will always provide a large marker. Furthermore, you can open the book by touching any part of the protruding section, allowing you to quickly continue reading.
[0010] Furthermore, placing a bookmark on pages you need to reread multiple times provides a clear marker, allowing you to quickly open the book, read, and check the relevant information. This makes it convenient to use while reading or studying, without the hassle of using a separate bookmark.
[0011] By making this bookmark colorless transparent or colored transparent as claimed in claim 2, reading and learning can be carried out more conveniently and efficiently. Although there are already transparent and convenient bookmarks in the prior art, the permeability is more effective when combined with the size and shape of this bookmark. By making it transparent, it is possible to continue reading through the bookmark even when the bookmark is sandwiched, so there is no need to remove the bookmark, and there is no trouble due to misplacement or dropping when it is placed or sandwiched between separate pages. And if it is sandwiched in the pages that need to be read repeatedly, such as search, answer columns, and annotations, it can be opened immediately and the burden of repetitive operations can be reduced. If this operation goes smoothly, it will help reading and learning and improve efficiency.
[0012] And in accordance with the solution of the problem, by endowing the bookmark with various functions, it can be used as an item useful for reading and learning that exceeds the concept of conventional bookmarks. Various design decorations can be created on the whole or in part of this bookmark, which can also function for appreciation purposes and one can enjoy the bookmark. In particular, the protruding part is always visible, so the design decoration is effective. If it is a favorite color or design, a soothing and healing effect can also be expected. And it is also possible to stick a sticker on the bookmark or endow the protruding part with a heading function so that multiple bookmarks can be used. By doing so, an effect of promoting reading and learning efficiently in combination with the convenience of the bookmark can also be expected. This is also an advantage in size and shape that conventional bookmarks do not have.
[0013] In the bookmark according to claim 3, a sheet-like bundle of stickers with a thickness that does not interfere with reading is pasted on the sheet part excluding the protruding part, and it is possible to write memos during reading. This is convenient for books borrowed from the library where writing directly in the book is not possible or for books with resistance to writing. It is also useful when making reading notes etc., and after reading, the memo can be reviewed.
[0014] The bookmark of claim 4 is a transparent bookmark. A separately made translucent sticky note can be attached to the part of the bookmark excluding the protruding part, and it is transparent, allowing text and other information to be seen through the translucent sticky note. Therefore, it is possible to underline important parts or take notes while reading a book. If the page number is also written when underlining, it can be moved to other pages, and then the sticky note can be replaced to make a new sticky note. The sticky note with the underlined part can be aligned with the page on which it was written to confirm the location of the underline, and later used for reading notes or research. This is a bookmark that can be used to organize things like this.
[0015] Furthermore, the bookmark of claim 9 consists of two connected pieces, and when folded in half, it becomes the size of a single piece. It is meant to be used by placing it on a single page. The two bookmarks are fixed in place, allowing the page to open wide. A transparent bookmark allows you to read both open pages through the bookmark, reducing the burden of rereading pages you need to reread or pages you want to keep. It also serves as a large, easily identifiable marker, leading to more efficient reading and learning.
[0016] The bookmark of the present invention, as described above, offers various advantages due to its size and shape, which are not found in conventional bookmarks. That is the case. [Brief explanation of the drawing]
[0017] [Figure 1] This is an example of an overall diagram of the bookmark of the present invention. [Figure 2] This shows an overall diagram of the bookmark of the present invention and an example of its use in a book. [Figure 3] These are a front view and a back view of the transparent bookmark according to claim 2 of the present invention. [Figure 4] This is a front view and an enlarged view of claim 4, showing the transparent bookmark of claim 2 of the present invention used in a book. [Figure 5] This is a front view of the bookmark of the present invention in use with a notebook, and an embodiment of the notebook in an open state. [Figure 6]This is a full view of the bookmark of the present invention with a stack of sticky notes attached, and an embodiment of the bookmark of claim 3 used in a book. [Figure 7] This is an embodiment of the bookmark according to claim 4, in which a translucent sticky note is attached to the transparent bookmark of the present invention. [Figure 8] This is an embodiment of the bookmark according to claim 6, in which the protruding portion of the bookmark of the present invention is used as a heading. [Figure 9] This is an embodiment of the bookmark according to claim 7, wherein the protruding portion of the bookmark of the present invention is shortened in stages. [Figure 10] This is an embodiment of the bookmark according to claim 5, wherein a star-shaped decorative hole is created in the bookmark of the present invention. [Figure 11] This is an embodiment of the bookmark according to claim 5, in which a ruler or die-cut is made on the protruding portion of the bookmark of the present invention. [Figure 12] A front view showing two bookmarks of the present invention joined together, and the bookmark of claim 9 used in a book. [Modes for carrying out the invention]
[0018] Embodiments of the present invention will be described.
[0019] This bookmark can be created for any book or other material that has pages. The size and thickness of bookmarks vary depending on the book being used, and can be adjusted accordingly. It can be used. Unlike conventional bookmarks, it is characterized by its size, which is almost the same as a book, and its shape, in which the horizontal edge extends slightly beyond the vertical edge of the book. The entire vertical edge can be inserted into the book, providing stability, and the protruding part serves as a large marker for the page it is inserted into, allowing you to open the book at that point.
[0020] Furthermore, the entire bookmark or parts of it can be designed, decorated, or processed, allowing for various creative possibilities based on the convenient bookmark. Making the bookmark transparent further enhances its usability by utilizing its transparency. Additionally, the size of the bookmark allows for the attachment of sticky notes, preventing them from sticking out or protruding. You can modify parts of the bookmark or shorten it so that multiple bookmarks can be used in a single book. And above all, the design and decoration of that part are very effective. Because it's always in your line of sight, if it's a favorite, it can soothe your mind and even have a calming effect. [Examples]
[0021] Embodiments of the present invention will be described in detail with reference to the figures.
[0022] Example 1
[0023] Figure 1 shows an overall view of the bookmark of the present invention and an example of a bookmark with decorations created.
[0024] (a) is an overall diagram of the bookmark. This shape is formed from the length of the vertical side of the book or other material being used × (length of the horizontal side + α). α is the length that allows the protruding part to be visually confirmed and touched with a finger to open the book or other material. (1a) is the entire bookmark (Claim 1), including the protruding part (hereinafter referred to as the protruding part) (1a = 1b + 3a), and is a thin, flat sheet with flexibility, having a thickness and hardness that does not interfere with reading. Whether transparent or opaque, designs and decorations can be created on the entire surface, in part, or even on the back, and the protruding part can also be decorated by processing or deformation. Since (3a) is the part that protrudes from the book, it is always visible from the outside and is always in the line of sight when using it. Therefore, design decoration on (3a) is particularly effective and functions for aesthetic purposes. The design decoration expressed can evoke goodwill and affection in the user, and when used on a book or other material, it gives the feeling that the book itself is also being decorated. Developing an attachment to something provides emotional stability and healing, which in turn can be reflected in reading and learning. This can also be expected to improve the efficiency of reading and learning.
[0025] The reverse side of (a) has the same shape and appearance as the front, but the reverse side will also change depending on the material of the bookmark, whether it is transparent or opaque, the design decoration, and the deformation process. It is possible to make the front and back the same, or to create different designs and decorations on the front and back.
[0026] (b) This diagram shows (8) a used in a book or similar publication, where (1b) is securely held deep within the medium, preventing slippage or falling out. The protruding part (3a) is fixed to the page it is held in place and is clearly indicated as a marker. The book can be opened from any part of the protruding part, allowing for immediate reading. Furthermore, by fixing it to pages that need to be reread repeatedly, it can be easily opened, reducing the burden of repeated reading. This bookmark may also be transparent (Claim 2), and utilizing its transparency will further increase its convenience and allow for more efficient reading and learning. In addition to books, this bookmark can be created and used conveniently with any paper medium that has pages, such as notebooks, diaries, planners, passbooks, and stamp books.
[0027] (c) is an example of creating a design decoration on the bookmark from (a). A large area as shown in the figure. It can be freely decorated, allowing for various forms of expression and making this bookmark meaningful. It is preferable to have something that does not interfere with reading or studying, and that is enjoyable and soothing just to look at. I aspire to things that are soothing.
[0028] (d) is a bookmark with a modified and decorated protruding part. Not just the protruding part, but the entire bookmark. Various processing and decorations can be considered. If this area can be fully utilized, it will be a very meaningful bookmark. Yes.
[0029] Example 2
[0030] Figure 2 shows an embodiment of the bookmark according to claim 1, in a decorated state and used in a book.
[0031] (a) is a full view of the bookmark, which has a design decoration, processing, or deformation added to the protruding part (3a). As shown in the figure, the protruding part (3a) is always visible when used in a book, so it is ideal to have a design decoration that does not interfere with the user's view while reading or studying. Furthermore, if it is pleasing, cute, or cool, it can lead to mental stability and relaxation, and it can be expected that the bookmark will make reading and studying more efficient. Moreover, the design decoration can be enjoyed even when not reading or studying. It can be enjoyed as if the book itself is being decorated.
[0032] (b) is an example of using the bookmark from (a) in a book. As shown in the figure, when in use, it is attached to the book or Only the protruding portion (3a) is visible from the outside. This protruding portion (3a) serves as a large landmark, and opening the book to that position allows the reader to immediately proceed with reading.
[0033] Example 3
[0034] Figure 3 shows the overall front view and back view of the colorless transparent and colored transparent bookmark according to claim 2.
[0035] (a) is a processed front view of the transparent bookmark (Claim 2). As shown in the figure, the protruding part (3a) has been decorated and modified, and the part that is held in place (1b) is transparent. Because the part that is held in place (1b) is transparent, the bookmark does not get in the way when you open a book or other material, and you can continue reading as usual. By utilizing the transparency, convenience is further increased and the efficiency of reading and studying is also improved.
[0036] (b) is the reverse side of (a). Since this bookmark is transparent, the part that is inserted (2b) on the back is also transparent, and the protruding part (3a) has the same design on both sides as shown in the diagram, so it can be used as is, and the design on the back can also be created by adding decorative elements.
[0037] Example 4
[0038] Figure 4 shows an example of using a colorless transparent or colored transparent bookmark (Claim 2) in a book.
[0039] (a) Figure 4 shows a section where the design decoration is maximized by utilizing the margins of the book. With a bookmark in use, the design decoration extends to the very end of the last line without interfering with the text or illustrations in the book, allowing for a more visually appealing experience.
[0040] (b) is an enlarged view of (a) 4. Maximum design and decoration is achieved by utilizing the margins of books, etc. This is the part that has been enlarged to this extent.
[0041] Example 5
[0042] Figure 5 shows an example of using a colorless transparent or colored transparent bookmark (Claim 2) in a notebook.
[0043] (a) This bookmark can also be used in notebooks, offering convenience and enabling efficient learning. This book uses transparent bookmarks, allowing you to utilize their transparency just like books. By placing them on the desired page, that page is clearly marked, making it easy to quickly open to it. This reduces the burden of repeated use, similar to books. Furthermore, if you place the bookmark on a different page, its design and decoration are always visible, providing a calming and therapeutic effect. This combined effect and convenience can lead to more efficient learning.
[0044] (b) is the open state of (a) when in use. Since it is transparent, its transparency is utilized as shown in the figure. You can use the bookmark to quickly open the page you want to read. It can be done, confirmed, and then immediately closed.
[0045] Example 6
[0046] Figure 6 shows an embodiment of claim 3 in which a bundle of sticky notes is fixed to the part of the bookmark that is inserted into a book or the like.
[0047] (a) As shown in the figure, this is a bookmark according to claim 3, in which a bundle of sticky notes of approximately the same size as the part (1b) that is inserted into a book, is fixed to the part (1b) that is inserted into a book, allowing you to write down necessary things when reading or studying. It is convenient to use with books borrowed from a library where you cannot write directly, or with books that you are reluctant to write in. You can summarize things at your leisure after you have finished reading or studying, which helps prevent forgetting, and is very convenient if you keep a reading notebook.
[0048] (b) shows a stack of sticky notes attached to a bookmark with writing on it. In the diagram, the notes are attached to the part that is held in place (1b), but they can also be conveniently attached to the protruding part (3a).
[0049] Example 7
[0050] Figure 7 shows an example in which a translucent sticky note is attached to a transparent bookmark according to claim 4 of the present invention.
[0051] (a) is a transparent bookmark with a translucent sticky note attached to the part (2b) that is held in place, which is approximately the same size as the part (2b) that is held in place. It is transparent, and text can be read through the sticky note.
[0052] (b) shows the transparent bookmark from (a) with a separately created translucent sticky note attached. The bookmark is either colorless or colored transparent, and even with a translucent sticky note attached, the text is still easily readable, allowing you to use the bookmark to draw lines or write notes. When drawing lines, if you also write the page number, you can move to a different page and check it by aligning it with the page number you wrote later. Then, you can simply replace it to get a new sticky note. It can also be used without attaching a sticky note.
[0053] Example 8
[0054] Figure 8 shows an embodiment of the bookmark according to claim 6, in which multiple bookmarks are used as headings, each having only the protruding portion of the bookmark shortened.
[0055] (a) As shown in the diagram, the protruding part of the bookmark is shortened to serve as a heading, applying the index function to the bookmark. However, it is not limited to dividing pages; each bookmark can be made independent and freely placed on any page. It is possible to use multiple bookmarks in a single book. One can be used as a bookmark, and the remaining bookmarks can be used to fix the desired page. By assigning symbols or numbers to each bookmark, it becomes easier to find the desired bookmark.
[0056] (b) is an overall view of each bookmark in (a).
[0057] (c) shows an example of using (b) in a single book. The ability to use multiple sheets expands its uses and makes it convenient for reading, studying, research, and more.
[0058] Example 9
[0059] Figure 9 shows an embodiment of the bookmark according to claim 7, in which multiple protruding parts of the bookmark are made progressively shorter.
[0060] (a) is a bookmark in which the protruding part is made progressively shorter, with a symbol or number attached to the top of the protrusion, and each bookmark can be made independent and freely inserted into any page. When looking for the desired bookmark, it can be confirmed by glancing at the top and the book can be opened with minimal hand movement without lowering one's gaze. Similar to Figure 9, having multiple bookmarks allows one to be used as a bookmark and the remaining bookmarks to be fixed to the necessary pages.
[0061] (b) is an overall view of each bookmark in (a). The protruding parts of multiple bookmarks have been gradually shortened, and symbols have been added to the top to create small heading sections.
[0062] (c) is an example of using the bookmark from (b) in a single book. The upper part of the bookmark's protrusion. The symbols and codes written on the bookmark can be easily identified at a glance, making it easier to find the desired bookmark.
[0063] Example 10
[0064] Figure 10 shows an embodiment of the bookmark according to claim 5, in which a star-shaped decorative hole is created on the upper part of the protruding portion of the bookmark according to the present invention.
[0065] By creating decorative holes as shown in the diagram, it becomes easier to pull out the bookmark by holding that part, and it is easy to use When not in use, that part can be hung up somewhere for storage. This prevents loss. It is possible to do so. Making it star-shaped is an effective way to combine design and decoration.
[0066] Example 11
[0067] Figure 11 shows the bookmark according to claim 8, which has a ruler or die-cutting function in the protruding part of the bookmark of the present invention.
[0068] Figure 11 shows a bookmark with a straight ruler and cutouts of letters and shapes on its protruding part. When using this bookmark while reading, studying, or researching, you can quickly measure and draw shapes. It is possible to do so.
[0069] Example 12
[0070] Figure 12 shows an embodiment of the bookmark according to claim 9, in which two bookmarks of the present invention are joined together and folded in half for use.
[0071] (a) Connect the two bookmarks (9) and (10) as shown in the figure, along the vertical sides opposite the protrusions, and both protrusions (3a) is held in place, folded along the perforation in the center (2c), and used by inserting it into a single page. The two protruding parts have been modified to facilitate opening and closing.
[0072] (b) The bookmark from (a) is folded along the perforations at (2c) to the size of a single bookmark. (9) The protruding parts of (10) are modified and arranged alternately so that it can be easily opened and closed to the left or right when touched with a finger.
[0073] This diagram shows the bookmarks (c) and (b) inserted into a book. By inserting two bookmarks (9) and (10), there are also two protruding sections (3a), and opening either one will separate them into left and right sections. The tip of the protruding section (3a) that you touch with your finger has the protruding sections (9) and (10) arranged alternately, making it easy to open to either the left or right, and it can be opened from any part of the vertical edge.
[0074] (c) is a diagram of a bookmark in an open book. Because the bookmark in this diagram is transparent, you can open the book from the state shown in diagram c and continue reading, and since two bookmarks are used, you can read the pages on the left and right. This bookmark is useful for fixing pages that you need to reread many times or pages that you want to keep in mind at all times. It can reduce the burden of repetition and is expected to improve the efficiency of reading and studying. When the bookmark is in place, the protruding part always serves as a large marker, allowing you to keep the desired page. Furthermore, decorating or processing the protruding part of the bookmark is effective and can be enjoyed visually. [Industrial applicability]
[0075] As explained above, this bookmark can be used not only for reading and studying, but for any medium with pages. It is convenient for notebooks, diaries, magazines, comics, passbooks, and stamp books. In particular, when reading or studying, using this bookmark will give you a sense of convenience and aesthetic appeal in addition to the simplicity of a conventional bookmark. Its size prevents it from shifting or falling out, and its shape allows you to quickly open books. Based on the convenience of this bookmark's shape, various specifications can be considered. If the bookmark is colorless or colored transparent, its transparency can be utilized, and it is also possible to conveniently use multiple bookmarks. Its size can also be used to attach sticky notes, and if it is a transparent bookmark, it is possible to read and write on translucent sticky notes. And above all, the fact that this large bookmark can be decorated, modified, and processed in any way, in addition to its convenience, is a great advantage. The decorative design on the protruding part of the bookmark is particularly effective, allowing it to be appreciated even when it's placed in a book, creating the impression that it's decorating the book itself. This can lead to choosing a bookmark that matches the book, or even one based on one's mood at the time, which can positively impact reading and studying, increasing efficiency and potentially providing mental relaxation and comfort.
[0076] For those who enjoy reading and studying, those who love books, those who keep reading journals or diaries, and those who are searching for something to soothe their troubled hearts, I hope this bookmark will help you enjoy reading even more, encourage your learning, and provide comfort to your heart. [Explanation of Symbols]
[0077] 1a The entire bookmark of claim 1 1b The part sandwiched between the media 2a. Colored or colorless transparent bookmark according to claim 2. 2b The part sandwiched between the media 3a Protruding part of the bookmark 3b Protrusion of the bookmark according to claim 6 3c Protruding part of the bookmark according to claim 7 4. Decorative area with added margins 5a Attached paper bundle 5b One translucent sticky note 6 decorative holes 7 Ruler 8. Books, etc. 9. Bookmark on the left side of claim 9. 10 Bookmark on the right side of claim 9
Claims
1. A flexible, thin, rectangular, flat sheet that covers the entire printed area of the book or notebook it is used on. A bookmark with a shape that is large enough to cover the book or notebook, and also has a width that extends vertically beyond the fore-edge of the book or notebook it is used on.
2. The bookmark according to claim 1, wherein the bookmark is colorless and transparent or colored and transparent.
3. The bookmark according to claim 1 or claim 2, characterized in that the bookmark has a portion (1b) that is inserted into a book or notebook and a bundle of sticky notes attached to it that is the same width as the portion (1b) that is inserted into the book and 2 mm shorter vertically than the portion (1b).
4. The bookmark according to claim 1 or claim 2, wherein the bookmark is colorless and transparent or colored and transparent, and a separate translucent sticky note, which has the same width as the part that is inserted into a book or notebook (2b) and is 2 mm shorter in both the top and bottom, can be attached to each of the parts that are inserted into the book or notebook (2b).
5. The bookmark according to claim 1 or claim 2, wherein multiple bookmarks are created by shortening only the protruding portion along the vertical edge of the bookmark, and these bookmarks are arranged sequentially in a vertical column, with each bookmark being independent and multiple bookmarks being usable in a single book.
6. The bookmark according to claim 1 or claim 2, wherein multiple bookmarks are created by gradually shortening only the protruding portion along the vertical edge of the bookmark, and these bookmarks are arranged sequentially in a vertical column, with each bookmark being independent and allowing multiple bookmarks to be used in a single book.
7. The bookmark according to claim 1 or claim 2, wherein a decorative hole such as a circle or a star is formed at the upper part of a projection that extends along the vertical side of the bookmark.
8. The bookmark according to claim 1 or claim 2, wherein a projection extending along the vertical edge of the bookmark is provided with a ruler function and cutouts for alphanumeric characters or figures.
9. The bookmark according to claim 1 or claim 2, characterized in that two bookmarks are connected at the vertical edge opposite a protruding portion that spans the vertical edge, and are used by folding them in half along a perforation in the center.
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