A photo printer
By incorporating anti-warping features in photo printers, the problem of printing media sticking to the take-up roller when it warps up is solved, resulting in easy paper output and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN HANIN CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-06-02
AI Technical Summary
When printing media, existing photo printers often have raised parts that stick to the tape on the take-up roller, making it difficult for users to pull out the printing media smoothly. This can even cause the printer to move and may result in the photos becoming unusable.
An anti-warping element is installed in the photo printer to avoid the rotation axis of the take-up roller along the paper output direction and to push the printing media downward to prevent it from contacting the ribbon wound by the take-up roller. The anti-warping element can be installed on the machine body or ribbon holder and is designed as a flexible sheet shape for easy manufacturing and installation.
It effectively prevents printing media from sticking to the ribbon, making it easier for users to pull out the printing media, reducing the risk of machine movement, ensuring photo quality, and maintaining the printer's portability.
Smart Images
Figure CN122126012A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of printers, specifically to a photo printer. Background Technology
[0002] Photo printers are used to print photos. In the prior art, photo printers generally include a body, a printing unit, a paper feeding unit, and a tape feeding unit. The body has a paper output port that opens into the body, and the paper output port at least has the function of allowing the printed media to extend out of the body after printing. The direction of the paper output port opening, which is consistent with the direction in which the printed media extends out of the paper output port, is the paper output direction. In a typical photo printer in its normal position, the paper output direction intersects with the vertical direction; preferably, the paper output direction is generally horizontal or the angle with the horizontal direction is less than or equal to 30°. The printing unit includes a heating head and a printing roller. The heating head is used to heat and selectively transfer the ink from the ribbon to the printing media, or to completely transfer the coating on the ribbon to the printing media. The printing roller provides positive pressure so that the heating head can press against the ribbon and printing media sandwiched between the heating head and the printing roller. The paper feeding unit is generally located between the printing unit and the paper output port along the paper output direction. The paper feeding unit is used to pull the printing media during printing and to transport the printing media to the paper output port after printing is completed. The paper feed unit includes a paper feed roller and a driven roller. The paper feed roller is driven directly or indirectly by a motor. The driven roller provides positive pressure so that the paper feed roller can press against the printing media sandwiched between the paper feed roller and the driven roller, and transport the printing media using friction. The tape feed unit includes a tape holder, a take-up roller, a release roller, and a tape. The tape holder is generally detachably mounted to the machine body. After installation, the tape holder is fixed relative to the machine body. The take-up roller and the release roller are rotatably connected to the tape holder. The take-up roller is used to wind up the tape during printing, and the release roller is used to release the tape to the take-up roller during printing. In a new tape unit, the tape is mostly concentrated on the release roller, and after multiple prints, the tape gradually transfers to the take-up roller. The tape includes a base tape and multiple color groups arranged along the extension direction of the base tape. Each color group includes at least one color (usually three or four) and a coating. Lamination is used to completely cover the printing media after all colors have been selectively transferred to it through the printing unit, thus isolating the transferred colors from the external environment and preserving their color for a longer period or preventing smudging. Because the rotation axis of the paper feed roller needs to be close to the rotation axis of the printing roller along the paper output direction to reduce the length of the unprintable portion of the printing media, the rotation axis of the take-up roller is generally positioned along the paper output direction between the rotation axis of the paper feed roller and the paper exit.
[0003] After printing, the printing media is conveyed to the output tray by the paper feed rollers. Once the printing media leaves the paper feed rollers and driven rollers, it loses its output propulsion and generally needs to be manually pulled out of the output tray, or pushed out by the next sheet of printing media. However, users of the above-mentioned photo printers sometimes find it difficult to pull the printing media out of the output tray smoothly, and even find that pulling the printing media causes the photo printer to move along with it. Summary of the Invention
[0004] Through experimentation, analysis, and research, the applicant discovered that the reason users cannot smoothly pull the print media out of the paper output tray of the aforementioned photo printer is that after the print media leaves the paper feed roller, most of it extends beyond the output tray, while a small portion remains between the output tray and the paper feed roller. Due to gravity, this portion sticks upwards. Because the printing unit requires overlay printing during lamination, the heat from the heat head is high and transferred to the print media. This causes the heated print media to adhere to the ribbon wound on the take-up roller due to its high temperature. Consequently, pulling out the print media also pulls the ribbon, damaging the ribbon carrier and the printer body, and rendering the printed photos unusable. Of course, even if the ribbon does not have a lamination layer, a similar situation can occur if the last color has a large coverage area during printing.
[0005] The purpose of this application is to largely avoid the aforementioned situations and to provide a photo printer that, compared to photo printers in the prior art, makes it easier for users to pull out the printing media, reduces the likelihood of the printer moving, and better ensures that the printed photos are not wasted. Furthermore, the photo printer provided by this application does not increase the thickness of the printer body in the vertical direction, thus maintaining its portability.
[0006] To achieve the above objectives, the following technical solution is adopted: In at least one embodiment, a photo printer is disclosed, the photo printer having an anti-tilting portion that avoids the rotation axis of the take-up roller in the paper output direction, the anti-tilting portion pressing downward against the printing medium to prevent the printing medium leaving the paper feed roller from contacting the ribbon wound by the take-up roller.
[0007] In the above design, because the anti-tipping element presses downward against the printing media to prevent the printing media leaving the paper feed roller from contacting the ribbon wound by the take-up roller, the printing media leaving the paper feed roller is less likely to adhere to the ribbon than in the prior art. This makes it easier for the user to pull out the printing media and reduces the likelihood of the machine moving. Since the anti-tipping element avoids the rotation axis of the take-up roller along the paper output direction, it is not located directly below the rotation axis of the take-up roller, thus not increasing the thickness of the machine in the vertical direction, thereby maintaining the portability of the photo printer.
[0008] In at least one embodiment, the paper output direction intersects with the vertical direction.
[0009] In at least one embodiment, the paper output direction is set horizontally or the angle between it and the horizontal direction is less than or equal to 30°.
[0010] In at least one embodiment, the anti-warping part is located on at least one side of the rotation axis of the take-up roller along the paper output direction; the position where the anti-warping part presses down against the printing medium and the position where the paper output port presses up against the printing medium together define a first plane, and the ribbon wound by the take-up roller is always located above the first plane and forms a gap between it and the first plane.
[0011] The above design is a specific embodiment of this application. Since the ribbon wound by the take-up roller is always located above the first plane defined by the anti-warping part and the paper exit, and forms a gap between them, the anti-warping part can press downward against the printing medium to prevent the printing medium leaving the paper feed roller from contacting the ribbon wound by the take-up roller. Since the anti-warping part is located on at least one side of the rotation axis of the take-up roller along the paper exit direction, it can avoid the rotation axis of the take-up roller along the paper exit direction.
[0012] In at least one embodiment, the position where the paper feed roller and the driven roller abut against each other and the position where the paper outlet pushes upward against the printing medium together define a second plane, and the anti-warping part is located on the upper side of the second plane and forms a gap between it and the second plane.
[0013] The above design is a more preferred embodiment of this application. Since the anti-warping part is located above the second plane defined by the paper feed unit and the paper output outlet and forms a gap between them, the anti-warping part is less likely to affect the transfer of printing media from the paper feed unit to the paper output outlet.
[0014] In at least one embodiment, the anti-warping portion extends from top to bottom and is inclined in the paper output direction along its extension direction.
[0015] The above design is because at the position where the anti-warping part presses down against the printing media, the distance between the first and second planes in the vertical direction is likely to be very close. Due to manufacturing or fitting tolerances, the anti-warping part may slightly contact the printing media being conveyed from the paper feed roller to the paper exit. In this case, extending the anti-warping part downwards ensures that this contact is a point or line contact, minimizing interference with the printing media output. More preferably, the anti-warping part is inclined in the paper output direction along its extension direction, making it easier to guide the printing media it contacts, resulting in smoother printing media output.
[0016] In at least one embodiment, the anti-warping portion extends along the paper output direction or away from the paper output direction, and tilts downward along its extension direction.
[0017] The rationale for the above design is the same as above, and will not be repeated here.
[0018] In at least one embodiment, the anti-warping portion is formed on the body or the ribbon holder.
[0019] In the above design, the anti-warping part is integrated with the machine body or ribbon carrier, which reduces manufacturing difficulty compared to installing the anti-warping part on the machine body or ribbon carrier. In particular, when the anti-warping part is integrated with the ribbon carrier, it is easier to ensure that the ribbon is always located above the first plane and spaced apart from the first plane.
[0020] In at least one embodiment, the anti-warping part is installed on the machine body or the ribbon holder.
[0021] The above design, by adding an anti-warping part to the machine body or ribbon carriage, facilitates the achievement of the technical effect of this application on existing photo printers through improvement, thereby eliminating the need to modify the mold and reducing improvement costs.
[0022] In at least one embodiment, the anti-warping portion is in the form of an elastic sheet.
[0023] In the above design, the anti-warping part is in the shape of a flexible sheet, which makes it less likely to interfere with the delivery of the printing medium from the paper feed roller to the paper outlet.
[0024] Unless otherwise specified, the terms "first," "second," or "third," etc., in the claims and description of this application are used to distinguish different objects and not to describe a specific order.
[0025] In the claims and description of this application, unless otherwise specified, the term "up and down direction" refers to the direction from top to bottom and from bottom to top when the direction of the Earth's gravitational force on the object is taken as the downward direction, that is, the up and down direction is bidirectional.
[0026] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description of this application mean “including but not limited to.”
[0027] In the claims and description of this application, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.
[0028] Unless otherwise specified in the claims and description of this application, the term "installation" means one component connected to another component.
[0029] Unless otherwise specified, the terms "fixed connection" or "fixed connection" or "relatively fixed" in the claims and description of this application shall be interpreted broadly, that is, any connection in which there is no displacement relationship or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.
[0030] In the claims and description of this application, unless otherwise specified, the terms "rotational connection," "pivotal connection," or "relative rotation" mean that one component is allowed to rotate about an axis of rotation relative to another component.
[0031] In the claims and description of this application, the term "paper output direction" refers to the direction (unidirectional) that is consistent with the direction in which the printing medium extends out of the paper output outlet in the opening direction of the paper slot (bidirectional).
[0032] Unless otherwise specified in the claims and description of this application, the term "anti-tilting portion that avoids the rotation axis of the take-up roll along the paper output direction" means that the anti-tilting portion does not intersect with a plane that passes through the rotation axis of the take-up roll and is perpendicular to the paper output direction.
[0033] Unless otherwise specified in the claims and description of this application, the term "downward pressing" means that the pressing direction has at least a component from top to bottom.
[0034] In the claims and description of this application, unless otherwise specified, the term "anti-warping part pressing down against the printing medium" means that after the printing medium leaves the paper feed roller and the driven roller, the anti-warping part presses down against the printing medium.
[0035] In the claims and description of this application, unless otherwise specified, the term "avoiding contact between the printing media leaving the paper feed roller and the ribbon" means that the ribbon wound by the take-up roller cannot come into contact with the printing media being pushed down by the anti-warping part under normal use. Normal use here refers to any state from the start of ribbon winding by the take-up roller until the last color of the last color group on the ribbon (if not laminated) or the position where the laminate in the last color group (if laminated) completely leaves the point of contact between the printer's hot head and the print roller.
[0036] In the claims and description of this application, unless otherwise specified, the term "anti-warping portion located between the rotation axis of the take-up roll and the feed roll along the paper output direction" means that the anti-warping portion is located between a plane passing through the rotation axis of the take-up roll and perpendicular to the paper output direction and a plane passing through the rotation axis of the feed roll and perpendicular to the paper output direction.
[0037] Unless otherwise specified in the claims and description of this application, the term "anti-warping portion located on at least one side of the rotation axis of the take-up roll along the paper output direction" means that the anti-warping portion is located on any one or both sides of a plane passing through the rotation axis of the take-up roll and perpendicular to the paper output direction.
[0038] Unless otherwise specified in the claims and description of this application, the term "position where the anti-warping part presses down against the printing medium" refers to the position where the anti-warping part contacts the printing medium leaving the paper feed roller.
[0039] In the claims and description of this application, unless otherwise specified, the term "position where the paper outlet touches the printing medium upward" refers to the position where the paper outlet contacts the printing medium leaving the paper feed roller. Generally, this position is located at the lower outer edge of the paper outlet away from the outer edge of the paper feed roller.
[0040] In the claims and description of this application, unless otherwise specified, the term "the ribbon wound by the take-up roller is always located above the first plane and forms a gap between the first plane" means that the ribbon wound by the take-up roller is located above the first plane and forms a gap between the first plane under normal use.
[0041] In the claims and description of this application, unless otherwise specified, the term "anti-warping portion extending from top to bottom" means that the direction of extension of the anti-warping portion has at least a component from top to bottom.
[0042] In the claims and description of this application, unless otherwise specified, the term "anti-warping portion extends along the paper output direction or away from the paper output direction" means that the extension direction of the anti-warping portion has at least a component along the paper output direction or a component away from the paper output direction.
[0043] In the claims and description of this application, unless otherwise specified, the term "anti-warping part formed in the machine body or ribbon carrier" means that the anti-warping part is integrally connected to the machine body or integrally connected to the ribbon carrier. The machine body is the main body for mounting the detachable ribbon carrier, and the machine body has a paper output port. The ribbon carrier is the frame for carrying the take-up shaft, the release shaft, and the ribbon.
[0044] In the claims and description of this application, unless otherwise specified, the term "elastic sheet shape" refers to a sheet shape made of a material that has a certain degree of elasticity after being formed into a sheet shape. This material can generally be plastic or metal. The term "sheet shape" refers to a shape that has a relatively uniform thickness, and whose thickness is significantly smaller than its dimensions in other directions.
[0045] The terms used above apply to each embodiment. Therefore, they will not be repeated in the embodiments. Attached Figure Description
[0046] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below: Figure 1 This is a schematic diagram of the photo printer in Example 1; Figure 2 This is a schematic diagram showing the state of the printing medium after it leaves the paper feed roller in Example 1; Figure 3 This is a schematic diagram of the photo printer in Example 2; Figure 4 This is a schematic diagram showing the state of the printing medium after it leaves the paper feed roller in Example 2; Figure 5 This is a schematic diagram of the photo printer in Example 3; Figure 6 This is a schematic diagram showing the state of the printing medium after it leaves the paper feed roller in Example 3; Figure 7 This is a schematic diagram of the photo printer in Example 4; Figure 8 This is a schematic diagram of the state of the printing medium after it leaves the paper feed roller in Example 4.
[0047] Explanation of key figure labels: 1. Photo printer; 100. Main body; 101. Paper output tray; 201. Heating head; 202. Printing roller; 301. Paper feed roller; 302. Driven roller; 401. Ribbon holder; 402. Rewind roller; 403. Release roller; 404. Ribbon; 500. Anti-warping unit; P1. First plane; P2. Second plane. Detailed Implementation
[0048] The specific embodiments of the technical solution of this application will be clearly and completely described below with reference to the accompanying drawings.
[0049] Example 1 See Figure 1 , Figure 1 The structure of the photo printer 1 in Embodiment 1 is shown. Figure 1 As shown, in this embodiment, the photo printer 1 includes a body 100, a printing unit, a paper feeding unit, a belt feeding unit, and an anti-tipping part 500. The body 100 has a paper output port 101 opening into the outer right side wall of the body 100. The paper output port 101 at least has the function of allowing the printing medium to extend out of the body 100 after printing. The direction of the opening of the paper output port 101, which is the direction in which the printing medium extends out of the paper output port 101, is the paper output direction. In a typical photo printer 1 in its normal placement state, the paper output direction intersects with the vertical direction. Preferably, the paper output direction is generally horizontal or the angle between it and the horizontal direction is less than or equal to 30°. In this embodiment, the paper output direction is horizontal. Figure 1The paper output direction is to the right. The printing unit includes a heating head 201 and a printing roller 202. The heating head 201 is used to heat and selectively transfer the color on the ribbon 404 to the printing medium, or to completely transfer the coating on the ribbon 404 to the printing medium. The printing roller 202 is used to provide positive pressure so that the heating head 201 can press against the ribbon 404 and the printing medium sandwiched between the heating head 201 and the printing roller 202. The paper feeding unit is arranged between the printing unit and the paper outlet 101 along the paper output direction. The paper feeding unit is used to pull the printing medium during printing and to transport the printing medium to the paper outlet 101 after printing. The paper feeding unit includes a paper feeding roller 301 and a driven roller 302. The paper feeding roller 301 is driven directly or indirectly by a motor. The driven roller 302 is used to provide positive pressure so that the paper feeding roller 301 can press against the printing medium sandwiched between the paper feeding roller 301 and the driven roller 302 and transport the printing medium by friction. The tape delivery unit includes a tape holder 401, a take-up roller 402, a release roller 403, and a tape 404. In this embodiment, the tape holder 401 is detachably mounted to the machine body 100. After installation, the tape holder 401 is fixed relative to the machine body 100. The take-up roller 402 and the release roller 403 are rotatably connected to the tape holder 401. During printing, the take-up roller 402 is used to take up the tape 404, and the release roller 403 releases the tape 404 to the take-up roller 402 during printing. On a new tape unit, the tape 404 is mostly concentrated on the release roller 403, and after multiple prints, the tape 404 gradually transfers to the take-up roller 402. The tape 404 includes a base tape and multiple color groups arranged along the extension direction of the base tape. Each color group includes at least one color (generally three or four) and a coating. The lamination is used to completely cover the printing medium after all colors have been selectively transferred to it through the printing unit, thus isolating the colors on the printing medium from the external environment and preserving the colors for a long time or preventing them from getting smudged. Because the rotation axis of the paper feed roller 301 needs to be close to the rotation axis of the printing roller 202 along the paper output direction to reduce the length of the unprintable portion of the printing medium, the rotation axis of the take-up roller 402 is positioned along the paper output direction between the rotation axis of the paper feed roller 301 and the paper outlet 101.
[0050] In this embodiment, the anti-warping part 500 is sheet-shaped and made of plastic. In this embodiment, the anti-warping part 500 is mounted on the machine body 100. Specifically, the upper part of the anti-warping part 500 is obliquely adhered to the driven roller spring seat in the machine body 100, which supports the spring that presses against the driven roller 302. In this embodiment, the anti-warping part 500 extends downwards and is inclined towards the paper output direction along its extension direction. Of course, in other embodiments, the anti-warping part 500 may only extend downwards without being inclined towards the paper output direction. In this embodiment, the anti-warping part 500 is located to the left of the rotation axis of the take-up roller 402 along the paper output direction so that the anti-warping part 500 can avoid the rotation axis of the take-up roller 402. Of course, in other embodiments, the anti-warping part 500 may also be located to the right or both sides of the rotation axis of the take-up roller 402. In this embodiment, the position where the anti-warping part 500 abuts against the printing medium downwards (specifically, the lower end of the anti-warping part 500 in this embodiment) and the position where the paper outlet 101 abuts against the printing medium upwards (specifically, the lower outer edge of the paper outlet 101 away from the outer edge of the paper feed roller 301 in this embodiment) together define the first plane P1. The ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 and forms a gap with the first plane P1. In this embodiment, the position where the paper feed roller 301 and the driven roller 302 abut against each other and the position where the paper outlet 101 abuts against the printing medium upwards together define the second plane P2. The anti-warping part 500 is located above the second plane P2 and forms a gap with the second plane P2.
[0051] See Figure 2 , Figure 2 The image shows the state of the printing medium 2 after it leaves the paper feed roller 301 after printing is complete, as shown in Embodiment 1. Figure 2 As shown, See Figure 2 , Figure 2 The image shows the state of the printing medium 2 after it leaves the paper feed roller 301 after printing is complete, as shown in Embodiment 1. Figure 2 As shown, after the printing medium 2 leaves the paper feed roller 301, the anti-tilting part 500 pushes downward against the printing medium 2 that has left the paper feed roller 301. Since the ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 and forms a gap with the first plane P1, the anti-tilting part 500 pushes downward against the printing medium 2 to prevent the printing medium 2 that has left the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402. In this embodiment, the anti-tilting part 500 is preferably located between the take-up roller 402 and the paper feed roller 301. When the printing medium tilts up after leaving the paper feed roller 301, the position where the printing medium and the anti-tilting part 500 push against each other is higher than the position of the printing medium directly below the take-up roller 402, thereby making the gap between the take-up roller 402 and the printing medium larger and less prone to adhesion.
[0052] In this embodiment, since the anti-warping part 500 pushes the printing medium 2 downward to prevent the printing medium 2 leaving the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402, the printing medium 2 leaving the paper feed roller 301 is less likely to adhere to the ribbon 404 than in the prior art. It is easier for the user to pull out the printing medium 2 and less likely to cause the machine body 100 to move.
[0053] In this embodiment, since the anti-tilting part 500 avoids the rotation axis of the take-up roller 402 along the paper output direction, the anti-tilting part 500 is not located directly below the rotation axis of the take-up roller 402, so the thickness of the body 100 in the vertical direction is not increased, thereby maintaining the portability of the photo printer 1.
[0054] In this embodiment, since the ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 defined by the anti-warping part 500 and the paper exit 101 and forms a gap between them, the anti-warping part 500 can push down against the printing medium 2 to prevent the printing medium 2 leaving the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402.
[0055] In this embodiment, since the anti-warping part 500 is located on at least one side of the rotation axis of the take-up roller 402 along the paper output direction, the anti-warping part 500 can avoid the rotation axis of the take-up roller 402 along the paper output direction.
[0056] In this embodiment, since the anti-warping part 500 is located above the second plane P2 defined by the paper feeding unit and the paper output port 101 and forms a gap between them, the anti-warping part 500 is less likely to affect the transfer of the printing medium 2 from the paper feeding unit to the paper output port 101.
[0057] In this embodiment, by adding an anti-warping part 500 to the body 100, it is beneficial to achieve the technical effect of this application by improving the existing photo printer 1, so that the mold does not need to be modified and the improvement cost is reduced.
[0058] Example 2 See Figure 3 , Figure 3 The structure of the photo printer 1 in Embodiment 2 is shown. Figure 3 As shown, the only difference between this embodiment and Embodiment 1 is the design of the anti-warping part 500. Therefore, the other structures of the photo printer 1 will not be described in detail. Figure 3 As shown, in this embodiment, the anti-warping portion 500 is formed on the ribbon carrier 401. In this embodiment, the other designs of the anti-warping portion 500 are exactly the same as in Embodiment 1, and will not be described again.
[0059] See Figure 4 , Figure 4This illustrates the state of the printing medium 2 after it leaves the paper feed roller 301 following printing in Embodiment 2. Figure 4 As shown, after the printing medium 2 leaves the paper feed roller 301, the anti-tilting part 500 pushes down against the printing medium 2 that has left the paper feed roller 301. Since the ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 and forms a gap with the first plane P1, the anti-tilting part 500 pushes down against the printing medium 2 to prevent the printing medium 2 that has left the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402.
[0060] In this embodiment, the anti-warping part 500 is integrated with the ribbon holder 401, compared to the embodiment where the anti-warping part 500 is mounted on the body 100. This also makes it easier to ensure that the ribbon 404 is always positioned above the first plane P1 and spaced apart from the first plane P1.
[0061] Example 3 See 5. Figure 5 The structure of the photo printer 1 in Embodiment 3 is shown. Figure 5 As shown, the only difference between this embodiment and Embodiment Two is the design of the anti-warping part 500. Therefore, the other structures of the photo printer 1 will not be described in detail. Figure 5 As shown, in this embodiment, the anti-warping part 500 is installed on the ribbon carrier 401. Specifically, the anti-warping part 500 is embedded in the baffles on both sides of the ribbon carrier 401 and is located on the right side of the rotation axis of the take-up roller 402 along the paper output direction. In this embodiment, the anti-warping part 500 is in the shape of an elastic sheet, specifically made of plastic, but in other embodiments it can also be made of a thin metal sheet. In this embodiment, the lower end of the anti-warping part 500 contacts the second plane P2 and elastically abuts against the machine body 100 located below it. In this embodiment, the other designs of the anti-warping part 500 are exactly the same as in Embodiment 2, and will not be described again.
[0062] See Figure 6 , Figure 6 The image shows the state of printing medium 2 after it leaves the paper feed roller 301 after printing is complete, as shown in Embodiment 3. Figure 6 As shown, after the printing medium 2 leaves the paper feed roller 301, the anti-warping part 500 pushes the printing medium 2 that has left the paper feed roller 301 downwards due to its elastic pressure. Since the ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 and forms a gap with the first plane P1, the anti-warping part 500 pushes the printing medium 2 downwards to prevent the printing medium 2 that has left the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402.
[0063] In this embodiment, even if the anti-warping part 500 contacts the second plane P2, since the anti-warping part 500 extends from top to bottom, the contact is a point contact or a line contact, which is less likely to interfere with the paper output of the printing medium 2.
[0064] In this embodiment, the anti-warping part 500 is inclined in the paper output direction along its extension direction, which makes it easier to guide the printing medium in contact with it, so that the printing medium outputs more smoothly.
[0065] In this embodiment, the anti-warping part 500 is in the shape of an elastic sheet, which makes it less likely to interfere with the conveying of the printing medium 2 from the paper feed roller 301 to the paper outlet 101.
[0066] In this embodiment, the anti-warping part 500 is installed on the ribbon carrier 401, which is beneficial to achieve the technical effect of this application by improving the existing photo printer 1, so that the mold does not need to be modified and the improvement cost is reduced.
[0067] Example 4 See 7. Figure 7 The structure of the photo printer 1 in Embodiment 4 is shown. Figure 7 As shown, the only difference between this embodiment and Embodiment 1 is the design of the anti-warping part 500. Therefore, the other structures of the photo printer 1 will not be described in detail. Figure 6 As shown, in this embodiment, the anti-tilting portion 500 is formed in the machine body 100. Specifically, the anti-tilting portion 500 extends from the inner side of the right side wall of the machine body 100 where the paper outlet 101 is located, away from the paper output direction, and slopes downward along its extension direction. Of course, in other embodiments, the anti-tilting portion 500 may also extend along the paper output direction. In this embodiment, the anti-tilting portion 500 is located to the right of the rotation axis of the take-up roller 402 along the paper output direction. In this embodiment, the other designs of the anti-tilting portion 500 are exactly the same as in Embodiment 1, and will not be described again.
[0068] See Figure 8 , Figure 8 The image shows the state of printing medium 2 after it leaves the paper feed roller 301 after printing is complete, as shown in Embodiment 3. Figure 8 As shown, after the printing medium 2 leaves the paper feed roller 301, the anti-warping part 500 pushes the printing medium 2 that has left the paper feed roller 301 downwards due to its elastic pressure. Since the ribbon 404 wound by the take-up roller 402 is always located above the first plane P1 and forms a gap with the first plane P1, the anti-warping part 500 pushes the printing medium 2 downwards to prevent the printing medium 2 that has left the paper feed roller 301 from contacting the ribbon 404 wound by the take-up roller 402.
[0069] The above description of the embodiments is used to explain the scope of protection of this application, but does not constitute a limitation on the scope of protection of this application.
Claims
1. A photo printer, characterized in that, The photo printer is provided with an anti-tilting part that avoids the rotation axis of the take-up roller along the paper output direction. The anti-tilting part presses down against the printing medium to prevent the printing medium leaving the paper feed roller from contacting the ribbon wound by the take-up roller.
2. The photo printer as described in claim 1, characterized in that, The paper output direction intersects with the vertical direction.
3. The photo printer as described in claim 1, characterized in that, The paper output direction is set horizontally or at an angle of less than or equal to 30° with the horizontal direction.
4. The photo printer as described in any one of claims 1 to 3, characterized in that, The anti-warping part is located on at least one side of the rotation axis of the take-up roller along the paper output direction; the position where the anti-warping part presses down against the printing medium and the position where the paper output port presses up against the printing medium together define the first plane, and the ribbon wound by the take-up roller is always located above the first plane and forms a gap between it and the first plane.
5. The photo printer as described in claim 4, characterized in that, The position where the paper feed roller and the driven roller abut against each other, together with the position where the paper outlet pushes upward against the printing medium, defines the second plane. The anti-warping part is located on the upper side of the second plane and forms a gap between it and the second plane.
6. The photo printer as described in claim 4, characterized in that, The anti-warping part extends from top to bottom and is inclined in the paper output direction along its extension direction.
7. The photo printer as claimed in claim 4, characterized in that, The anti-warping part extends along the paper output direction or away from the paper output direction, and tilts downward along its extension direction.
8. The photo printer as claimed in claim 4, characterized in that, The anti-warping part is formed on the machine body or ribbon holder.
9. The photo printer as claimed in claim 4, characterized in that, The anti-warping part is installed on the machine body or the ribbon holder.
10. The photo printer as claimed in claim 11, characterized in that, The anti-warping part is in the shape of an elastic sheet.