A flat push type printing paper with lock code tearable edge

Abstract

The utility model relates to a flat push type printing paper with lock code tearable edge, which is made of carbonless copy paper material, characterized in that it adopts a structure scheme of one upper paper layer, 0-6 middle paper layers and one lower paper layer, and the four edges are cut flush, and the two edges are riveted with lock code and pressed with tearable lines, and the pressure-sensitive color display characteristics of carbonless copy paper are used to realize simultaneous color display of multiple paper layers in a single printing process; compared with traditional continuous format carbonless copy computer printing paper, the structure is simple, and users do not need to manually tear and separate single copies, so that the product is more convenient to use and has low cost; the self-releasing paper material with waterproof film coated on both sides of the upper paper, middle paper and lower paper can effectively prevent moisture, and is suitable for use in humid or outdoor construction.

Description

Technical Field

[0001] This patent relates to a computer printing paper product, and more particularly to a flat-push printing paper with a lockable tear-off edge. Background Technology

[0002] Multi-part computer printing paper is made from carbonless copy paper, also known as pressure-sensitive printing paper. It consists of a top sheet (CB), a middle sheet (CFB), and a bottom sheet (CF). The back of the top sheet (CB) and middle sheet (CFB) is coated with a colorant, while the front of the middle sheet (CFB) and bottom sheet (CF) is coated with a developer. Its color development principle is based on a chemical reaction between the microcapsule colorant layer and the acidic clay in the developer layer. Pressure is applied to the paper surface by the printing needles to achieve color development. Typically, the number of layers in the printing paper is between 2 and 6 (each layer is conventionally called a copy). It is mainly used for continuous printing with dot matrix printers, but can also be used for handwriting, enabling one-time copying of multiple copies. Self-developing paper, also known as self-supporting carbonless copy paper, is a special type of carbonless copy paper. Its front side is coated with both colorant microcapsules and a developer. When pressure is applied, the colorant microcapsules rupture, instantly contacting the developer and undergoing a chemical reaction to achieve self-developing color.

[0003] Conventional multi-part computer printing paper uses a continuous format with fold lines between pages and feed holes on both sides, ensuring simultaneous printing of multiple layers of paper through a locking mechanism. This type of paper is ideal for continuous printing needs. However, in banks, retail stores, and other industries, flatbed printers are often used, requiring single-copy printing. When using a flatbed printer, the paper must be manually torn into individual copies along the fold lines, which is inconvenient and can easily damage the paper, resulting in wasted resources.

[0004] In response to the aforementioned needs, our company successfully developed single-sheet carbonless copy paper in 2008 (Patent No. 200820048446.1) and launched A4-sized carbonless copy computer printing paper in 2018 (Patent No. 201821566914.4). Both types of printing paper are produced using a brush-on separation adhesive technology, making them well-suited for flatbed printers. However, this technology places high demands on the separation adhesive, requiring the development of matching adhesives tailored to the microcapsule characteristics of different carbonless copy papers to ensure that each sheet of carbonless copy paper can adhere together while facilitating separation between sheets. In actual production, this limits the interchangeability of raw materials and increases production costs. Addressing the market demand for printed forms and documents, our company further developed single-sheet carbonless copy computer printing paper with a single-sided feed hole in 2019 (Patent No. 201921728545.9), also suitable for flatbed printers. However, the product's conveyor holes are designed based on production process requirements rather than customer requirements, and the connection between the various sections of the product is made by adhesive. This causes the paper at the adhesive joints to be easily damaged when the sections are separated during use, and the conveyor holes also affect the overall appearance of the paper.

[0005] Customers in sectors such as banking and retail that frequently use flatbed printers urgently need dedicated flatbed printing paper, requiring simple structure, low cost, and ease of use.

[0006] Another use case for printing paper is in humid environments or outdoor construction. Ordinary printing paper does not have moisture-proof function, and when used, it is easy for the colored text to become faded or blurred due to moisture, or the paper to deform. A waterproof computer printing paper is needed, which can also be used in flatbed printers. Summary of the Invention

[0007] This patent aims to provide a flat-push printing paper with a lockable tear-off edge, offering customers a product that is easy to use, simple in structure, low in cost, and effectively moisture-proof.

[0008] To achieve the above objectives, this patent adopts the following technical solution: a flat-push printing paper with locking code and tearable edge, made of carbonless copy paper material, consisting of one layer of top paper, 0 to 6 layers of middle paper and one layer of bottom paper stacked together to form a single printing paper with all four edges cut evenly, and each layer is riveted together with a row of evenly spaced locking codes on both sides, and a tear-edge line is pressed on the inner side of each locking code.

[0009] A further technical solution is that the lock code consists of symmetrical lock claws with three sides cut off and one side left uncut, and the cut head embedded downwards. There are at least two pairs of these lock claws combined to form a lock code; the tear line is a dotted cut line cut at intervals.

[0010] In another embodiment, this type of flat-push printing paper with locking and tear-off edges is made of self-generating paper material. It consists of one top layer, 0 to 6 middle layers, and one bottom layer stacked together to form a single sheet of printing paper with all four edges trimmed. The layers are riveted together on both sides using a row of evenly spaced locking clips, and a tear-off line is pressed inside each locking clip. Both sides of the top, middle, and bottom layers are coated with a waterproof film.

[0011] In another embodiment, this type of flat-push printing paper with locking and tear-off edges consists of one top layer, 0 to 6 middle layers, and one bottom layer stacked together to form a single sheet with all four edges trimmed. The layers are riveted together on both sides using a row of evenly spaced locking clips, and a tear-off line is pressed inside each locking clip. The top layer is made of ordinary writing paper material, while the middle and bottom layers are made of self-generating paper material and coated with a waterproof film on both sides.

[0012] The advantages of this patent are as follows: This push-type printing paper with locking and tear-off edges, through a structure consisting of a single-layer top paper, 0 to 6 layers of middle paper, and a single-layer bottom paper, with all four edges neatly trimmed, and secured with locking clips and tear-off lines on both sides, utilizes the pressure-sensitive color development characteristics of carbonless copy paper to achieve simultaneous color development of multiple layers of paper in a single printing process. Compared to traditional continuous format carbonless copy computer printing paper, this structure is simpler, eliminating the need for manual tearing of individual sheets, making it more convenient to use. For manufacturers of traditional continuous format carbonless copy computer printing paper, only an edge-trimming process needs to be added after producing the folded printing paper, resulting in low cost. This provides customers with a convenient, simple, and inexpensive product. The top, middle, and bottom papers are made of self-rising paper material coated with a waterproof film on both sides, effectively preventing moisture and making it suitable for use in humid or outdoor environments. With the increasing popularity of push-type printers, this product demonstrates strong practical value and broad application potential. Attached Figure Description

[0013] Appendix Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of this patent.

[0014] Appendix Figure 2 This is a schematic diagram of the cross-sectional structure of the lock code in this patent.

[0015] Appendix Figure 3 This is a schematic diagram of the cross-sectional structure of the waterproof material of this patent.

[0016] Explanation of symbols in the attached diagram: 1—Top paper; 2—Middle paper; 3—Bottom paper; 4—Lock code; 5—Tear line. Detailed Implementation

[0017] To make the implementation purpose, technical solution and advantages of this patent clearer, the following detailed description of the patent solution by way of embodiments, in conjunction with the accompanying drawings, is provided.

[0018] Example 1, as shown in the appendix Figure 1 The figure shown is a three-dimensional structural diagram of an embodiment of the flat-push printing paper with locking code and tearable edge described in this patent. It is made of carbonless copy paper material and consists of a top paper 1, a middle paper 2 and a bottom paper 3 stacked together to form a printing paper with the four edges cut evenly. The layers are connected together by a row of locking codes 4 on each side, and a tear-edge line 5 is pressed on the inside of each locking code 4.

[0019] The lock 4 is composed of symmetrical locking claws 41 with three sides cut off and one side left uncut, the cut-out head embedded downwards, as shown in the attached figure. Figure 2 As shown, this type of locking claw 41 has at least two pairs forming a locking code 4, such as... Figure 1The illustrated embodiment shows a locking code 4 composed of four pairs of locking claws 41, evenly spaced along the paper edge. This locking code 4 can be die-cut during production. During die-cutting, the heads of the locking claws 41 are embedded downwards into one or two layers, creating an interlocking structure that rivets the layers together. The symmetrical pair arrangement of the locking claws 41 effectively resists bidirectional longitudinal forces, resulting in a stronger connection between layers under friction. The more locking claws 41 in a locking code 4, the greater the locking force between layers. This is especially true for products with more than four paper layers, where a larger locking force is required, typically using a locking code 4 composed of four pairs of locking claws 41. For products with two to three paper layers, a smaller locking force is required, and a locking code 4 composed of two or three pairs of locking claws 41 can be used. The width of the locking claws 41 is generally 1 mm, and the spacing between them is also 1 mm.

[0020] The tear line 5 is a dotted cutting line cut at intervals. After printing, customers can easily tear off the edge material with locking clips 4 along the tear line 5 to form neat printed material for easy storage. In actual production, this tear line 5 can be cut with a dotted line cutter after the pages are aligned, resulting in a neat cut that is easy to tear and convenient for customers. The blade of the dotted line cutter consists of a cutting edge and a notch. The cutting edge cuts the paper, while the paper at the notch remains connected, forming a dotted tear line. The ratio of the cutting edge to the notch can be 4:1, 3:1, 2:1, 1:0.5 (all units are mm), which can be selected according to the tear resistance index of the paper.

[0021] Example 2: The flat-push printing paper with locking and tear-off edges is made of self-generating paper material. It consists of one layer of top paper 1, two layers of middle paper 2, and one layer of bottom paper 3 stacked together to form a single sheet of printing paper with all four edges trimmed. A row of locking clips 4 connects the layers on each side, and a tear-off line 5 is pressed inside each locking clip 4. Both sides of the top paper 1, middle paper 2, and bottom paper 3 are coated with a waterproof film. The structure is illustrated using the middle paper 2 as an example. Figure 3 As shown, the middle paper 2 includes a paper substrate 21, the upper surface of which is coated with a mixture of color-developing agent microcapsules and color-developing agent 22, and the upper and lower outer surfaces are coated with a waterproof film 23. The waterproof film 23 can be made of PE material, which has high chemical stability, is resistant to water, oil, acids and alkalis, has a soft texture, high transparency, and good moisture-proof effect. This type of self-publishing paper using a waterproof film-coated self-publishing paper material has a transparent waterproof film that completely covers the color-developing layer and the paper, effectively isolating water or moisture without affecting readability. It is suitable for use in humid or outdoor environments.

[0022] Example 3: The push-type printing paper with locking and tear-off edges consists of a top layer 1, a middle layer 2, and a bottom layer 3 stacked together, with all four edges trimmed. A row of locking clips 4 connects the layers on each side, and a tear-off line 5 is pressed inside each locking clip 4. The top layer 1 is made of ordinary writing paper, while the middle and bottom layers are made of self-rising paper and coated with a waterproof film on both sides. This push-type printing paper, with the top layer made of ordinary writing paper, can be used indoors, such as for stub storage; the middle and bottom layers, made of self-rising paper coated with a waterproof film, effectively isolate water or moisture, making it suitable for use in humid or outdoor environments.

[0023] The flat-push printing paper with lockable and tearable edges described in this patent is made of common materials and is suitable for industrial production.

Claims

1. A type of flat-push printing paper with a lockable tear-off edge, characterized in that: Made of carbonless copy paper, it consists of one top layer, 0 to 6 middle layers, and one bottom layer stacked together to form a single sheet of printing paper with all four edges trimmed. Each layer is riveted together on both sides by a row of evenly spaced locking clips, and a tear line is pressed on the inside of each locking clip.

2. The flat-push printing paper with a locking code and tearable edge according to claim 1, characterized in that: Made of self-generating paper material, it consists of one top layer, 0 to 6 middle layers, and one bottom layer stacked together to form a single sheet of printing paper with all four edges trimmed. Each layer is riveted together on both sides using a row of evenly spaced locking clips, and a tear line is pressed inside each locking clip. Both sides of the top, middle, and bottom layers are coated with a waterproof film.

3. The flat-push printing paper with a locking code and tearable edge according to claim 1, characterized in that: A printing paper is composed of one top layer, 0 to 6 middle layers, and one bottom layer, all with the edges cut neatly. The layers are riveted together on both sides using a row of evenly spaced locking clips, and a tear line is pressed on the inside of each locking clip. The top layer is made of ordinary writing paper material, while the middle and bottom layers are made of self-generating paper material and coated with a waterproof film on both sides.

4. The flat-push printing paper with a locking code and tearable edge according to any one of claims 1-3, characterized in that: The lock code consists of four pairs of locking claws.

5. The flat-push printing paper with a locking code and tearable edge according to claim 4, characterized in that: The lock code consists of symmetrical locking claws with three sides cut off and one side left uncut, the cut-out head embedded downwards. There are at least two pairs of these locking claws combined to form a lock code.

6. The flat-push printing paper with a locking code and tearable edge according to claim 5, characterized in that: The tear line is a dotted cutting line cut at intervals.

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