A document printer for easy filing

Abstract

The application discloses a document printer convenient for archiving, which comprises a storage plate, a portal frame, a printing head, a lifting driving element, a horizontal movement driving element, a lifting sensing module, a positioning module and a horizontal movement sensing module; the portal frame is fixed on the storage plate, the fixed end of the lifting driving element is slidably arranged on the portal frame, the printing head is in transmission connection with the output end of the lifting driving element, the fixed end of the horizontal movement driving element is arranged on the portal frame, the output end of the horizontal movement driving element is in transmission connection with the fixed end of the lifting driving element, the lifting sensing module is arranged on the printing head and the lifting driving element, the lifting sensing module is in communication connection with the lifting driving element, and the horizontal movement sensing module is in communication connection with the horizontal movement driving element; and the positioning module is arranged on the portal frame. The document printer can directly print the archiving information on the cover of a book, and the book does not need to be repeatedly disassembled and assembled, so that the archiving efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of printer technology, and more specifically to a document printer that facilitates archiving. Background Technology

[0002] In the printing of book covers, the conventional practice is to carefully separate the cover from the book body and lay it flat. Then, the cover is placed on a standard printing press for printing. After printing, the next step is to use glue to reattach the cover. However, this separation and gluing process has several problems. First, the cover is prone to creases during separation, affecting its appearance. Second, it's impossible to ensure the cover won't be damaged during separation, increasing printing risks. Finally, while glue can hold the cover together, this method cannot guarantee the binding quality, potentially resulting in wrinkles or other unevenness, thus affecting the overall aesthetics of the book. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a document printer that allows for easy printing of archival markings on books without requiring them to be unsealed.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A document printer that facilitates archiving includes a shelf, a gantry, a printhead, a lifting drive, a traverse drive, a lifting sensor module, a positioning module, and a traverse sensor module.

[0006] The gantry frame is fixed to the shelf, the fixed end of the lifting drive is slidably mounted on the gantry frame, the print head is connected to the output end of the lifting drive, the fixed end of the lateral drive is mounted on the gantry frame, the output end of the lateral drive is connected to the fixed end of the lifting drive, the lateral drive is used to drive the lifting drive and the print head to reciprocate laterally on the gantry frame, the lifting sensor module is mounted on the print head and the lifting drive, the lifting sensor module is communicatively connected to the lifting drive, and the lateral sensor module is communicatively connected to the lateral drive.

[0007] The positioning module is mounted on the gantry frame;

[0008] When the lifting sensor module senses that the print head has risen to its highest value, the lifting drive stops driving the print head to rise or drives the print head to fall.

[0009] When the lifting sensor module senses that the print head has descended to its lowest value, the lifting drive stops driving the print head to descend or drives the print head to rise.

[0010] When the lateral movement sensing module senses that the print head has moved to the edge of the gantry or the location of the positioning module, the lateral movement drive stops driving the print head to move or drives the print head to move in the opposite direction.

[0011] As described above, in the document printer, the lifting sensor module includes an upward sensor group and a downward sensor group. The upward sensor group is located on the lifting drive and the print head to sense the highest value of the print head rising. The downward sensor group is located on the print head to sense the lowest value of the print head falling.

[0012] As described above, in the document printer, the rising sensing group includes a first photoelectric sensor fixed to the print head and a first blocking member fixed to the print head. When the lifting drive unit drives the print head to rise, the first blocking member enters the sensing area of ​​the first photoelectric sensor.

[0013] As described above, in the document printer, the descent sensing group includes a pressure limit and a second photoelectric sensor. The pressure limit is retractably disposed on the print head, and the second photoelectric sensor is disposed on the print head. When the print head descends, the pressure limit is pushed upward and enters the sensing range of the second photoelectric sensor.

[0014] As described above, in the document printer, the gantry includes a horizontal support rod, and the positioning module includes a third photoelectric sensor disposed on the lifting drive component and a third blocking component slidably disposed on the horizontal support rod;

[0015] When the third photoelectric sensor slides to the side of the third blocking member along with the lifting drive, the third blocking member is located in the sensing area of ​​the third photoelectric sensor, and at this time the lifting drive drives the print head to descend.

[0016] As described above, the document printer has a limiting post on the horizontal support rod, and the positioning module includes a position marker and a moving block.

[0017] The movable block is provided with a movable limiting groove, and the limiting post is located in the movable limiting groove;

[0018] The movable block slides along the movable limiting groove on the transverse support rod, and its maximum movement distance is limited by the limiting post;

[0019] The position marker is fixedly connected to the moving block, and the position marker is used to emit light to mark the position to be printed.

[0020] As described above, the document printer has a moving block equipped with an assistive component to help move the moving block.

[0021] As described above, the document printer has a nozzle for inkjet printing protruding from the print head, and a nozzle cover is provided on one side of the mounting plate. The nozzle cover is provided outside the nozzle to reduce ink evaporation from the nozzle.

[0022] In the document printer described above, the nozzle cover is connected to the shelf via a spring.

[0023] The document printer described above also includes a housing, which is located on the shelf and outside the gantry, the print head, the lifting drive, the traverse drive, the lifting sensing module, the positioning module, and the traverse sensing module. The housing has a front slot and a rear slot that are arranged opposite to each other, which are used for placing printed documents through the slot.

[0024] The beneficial effects of this invention are:

[0025] During printing, the book is placed on the shelf below the gantry. The positioning module positions the book at the pre-printing location. The lateral drive moves the print head laterally above the pre-printing location. Then, the lifting drive moves the print head down. The lifting sensor module senses that the print head is above the book and sends a signal to the lifting drive, causing it to stop moving the print head further down. After printing, the lifting drive resets the print head. Then, the lateral drive moves the print head laterally to the edge of the gantry, completing one archiving printing job. The document printer of this invention can directly print archiving information on the book cover without repeatedly disassembling and reassembling the book, thus improving archiving efficiency. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a 3D structural diagram of a document printer;

[0028] Figure 2 This is one of the structural diagrams of a document printer without its outer casing;

[0029] Figure 3 This is a magnified view of a document printer without its outer casing.

[0030] Figure 4 This is a cross-sectional view of a document printer;

[0031] Figure 5 yes Figure 4 Enlarged view of the structure of section A in the middle;

[0032] Figure 6 yes Figure 4 Enlarged view of the structure of section B in the middle;

[0033] Figure 7 This is the second schematic diagram of a document printer without its outer casing;

[0034] Figure 8 yes Figure 7 Enlarged view of the structure of section C;

[0035] Figure 9 This is the third schematic diagram of a document printer without its outer casing;

[0036] Figure 10 yes Figure 9 Enlarged view of the structure of section C;

[0037] The attached figures are labeled as follows:

[0038] 11-Upward sensing group; 111-First photoelectric sensor; 112-First blocking component; 12-Downward sensing group; 121-Pressure limit; 1211-Step structure; 1212-Limiting structure; 122-Second photoelectric sensor; 13-Upper pulley; 14-Lower pulley;

[0039] 2-Positioning module; 201-Third photoelectric sensor; 202-Third blocking component; 21-Position marker; 22-Moving block; 221-Moving limit groove; 222-Assist component;

[0040] 31-Left sensing group; 311-Left photoelectric sensor; 312-Left blocking component; 32-Right sensing group; 321-Right photoelectric sensor; 322-Right blocking component;

[0041] 41-Print head; 411-Nozzle; 42-Lifting drive; 43-Horizontal movement drive; 44-Housing; 441-Through hole; 45-Fixed bracket; 451-Left support; 452-Secondary right support; 453-Secondary transverse support; 4531-Through slot;

[0042] 5-Shelf; 51-Nozzle cover;

[0043] 6-Gantry frame; 61-Horizontal support rod; 611-Limiting post; 62-Left support component; 63-Right support component; 631-Right slot; 632-Mounting base; 64-Slide rail; 641-Front groove; 642-Rear groove; 643-Upper groove; 644-Lower groove; 65-Drive belt; 66-Driving pulley; 67-Driven pulley;

[0044] 7-Outer casing; 71-Front slot; 72-Rear slot; 73-Control panel. Detailed Implementation

[0045] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0046] Reference Figures 1 to 3 A document printer for easy archiving includes a shelf 5, a gantry 6, a print head 41, a lifting drive 42, a horizontal movement drive 43, a lifting sensor module, a positioning module 2, and a horizontal movement sensor module.

[0047] The gantry frame 6 is fixed on the shelf 5. The fixed end of the lifting drive 42 is slidably disposed on the gantry frame 6. The print head 41 is connected to the output end of the lifting drive 42. The fixed end of the transverse drive 43 is disposed on the gantry frame 6. The output end of the transverse drive 43 is connected to the fixed end of the lifting drive 42. The transverse drive 43 is used to drive the lifting drive 42 and the print head 41 to reciprocate transversely on the gantry frame 6. The lifting sensing module is disposed on the print head 41 and the lifting drive 42. The lifting sensing module is communicatively connected to the lifting drive 42. The transverse sensing module is communicatively connected to the transverse drive 43.

[0048] The positioning module 2 is mounted on the gantry frame 6;

[0049] When the lifting sensor module senses that the print head 41 has risen to its highest value, the lifting drive 42 stops driving the print head 41 to rise or drives the print head 41 to fall.

[0050] When the lifting sensor module senses that the print head 41 has descended to its lowest value, the lifting drive 42 stops driving the print head 41 to descend or drives the print head 41 to rise.

[0051] When the lateral movement sensing module senses that the print head 41 has moved to the edge of the gantry 6 or the positioning module 2, the lateral movement driving component 43 stops driving the print head 41 to move or drives the print head 41 to move in the opposite direction.

[0052] During printing, the book is placed on the shelf 5 and below the gantry 6. The positioning module 2 positions the book at the pre-printing position. The lateral drive 43 drives the print head 41 to move laterally above the pre-printing position. Then, the lifting drive 42 drives the print head 41 to descend. The lifting sensor module senses that the print head 41 is above the book and sends a signal to the lifting drive 42, causing the lifting drive 42 to stop driving the print head 41 to continue descending. After the print head 41 finishes printing, the lifting drive 42 drives the print head 41 to reset. Then, the lateral drive 43 drives the print head 41 to move laterally to the edge of the gantry 6, completing one archiving printing job. The document printer of this invention can directly print archiving information on the cover of the book without repeatedly disassembling and reassembling the book, which can improve archiving efficiency.

[0053] Compared to existing technologies where printing cover information requires printing it separately on the cover paper before binding, the archiving printer in this embodiment does not require disassembly during application; nor does it require manual writing on the cover or affixing labels, which can speed up the process of book archiving.

[0054] Of course, the archiving printer in this embodiment is also suitable for printing document content in books. You can print simply by turning the page without disassembling the book, which is convenient and quick.

[0055] Reference Figure 2 In one embodiment, the length of the shelf 5 is greater than the width of the gantry 6. This improves the stability of the books when placed on the shelf 5 and also prevents the books from shifting due to instability when the print head 41 descends for printing, thus affecting the printing effect.

[0056] Specifically, the length of shelf 5 is greater than the length of the book to be printed.

[0057] Reference Figure 2 Specifically, in one embodiment, the gantry 6 includes a left support member 62, a right support member 63, and a slide rail 64;

[0058] The left support member 62 is located on the left side of the slide rail 64, the right support member 63 is located on the right side of the slide rail 64, and the print head 41 slides on the slide rail 64.

[0059] The left support 62 and the right support 63 serve two purposes: firstly, to elevate the slide rail 64, thereby raising the print head 41; secondly, the left support 62 and the right support 63 can stably mount the slide rail 64, ensuring that the slide rail 64 does not deviate when the print head 41 moves to any point on the slide rail 64, thus maintaining the stability of the center of gravity of the print head 41 and avoiding affecting the movement of the print head 41 and the printing effect of the print head 41.

[0060] Specifically, the left support member 62 and the right support member 63 are arranged parallel to each other, and the slide rail 64 is parallel to the horizontal line.

[0061] Reference Figures 2 to 3 Specifically, the gantry frame 6 is equipped with a transmission belt 65, a drive wheel 66, and a driven wheel 67;

[0062] The transverse drive 43 is connected to the print head 41 in a transmission connection, and the drive wheel 66 is fixedly connected to the output end of the transverse drive 43;

[0063] The passive wheel 67 is rotatably located on the side of the left support member 62 facing away from the right support member 63;

[0064] One end of the slide rail 64 is fixed to the left support member 62, and the other end is fixed to the right support member 63;

[0065] The transmission belt 65 is engaged with the driving wheel 66 and the driven wheel 67 respectively. The lifting drive component 42 is fixedly connected to the transmission belt 65 and is slidably disposed on the slide rail 64.

[0066] The lateral drive component 43 drives the drive wheel 66 to rotate, the drive wheel 66 drives the transmission belt 65 to rotate, the transmission belt 65 drives the driven wheel 67 to move synchronously, and at the same time the lifting drive component 42 moves with the transmission belt 65 and moves laterally on the slide rail 64.

[0067] As an example, the transverse drive 43 and the print head 41 are connected by any one of gear drive, chain drive, belt drive, and screw drive, or a combination of multiple drives without contradiction.

[0068] The use of a transverse drive unit 43 replaces worker movement, further improving the automation level of the printer, reducing human intervention, and enhancing the user experience.

[0069] Reference Figure 4 as well as Figure 6 Specifically, the slide rail 64 is provided with a front groove 641 and a rear groove 642. The transmission belt 65 is installed in the front groove 641 and the rear groove 642, which can determine the movement path of the transmission belt 65 and prevent the transmission belt 65 from detaching from the driving wheel 66 and the driven wheel 67, thus affecting the stability of the lifting drive component 42.

[0070] Specifically, an upper pulley 13 and a lower pulley 14 are installed on the rear side of the lifting drive component 42. The slide rail 64 also includes an upper groove 643 and a lower groove 644. The upper pulley 13 is slidably disposed in the upper groove 643, and the lower pulley 14 is slidably disposed in the lower groove 644. This is equivalent to the upper pulley 13 and the lower pulley 14 clamping the slide rail 64, which can reduce the probability of the upper pulley 13 and the lower pulley 14 disengaging from the slide rail 64. When the lifting drive component 42 is printing, the lifting drive component 42 is subjected to an upward thrust. At this time, because the lower pulley 14 abuts against the inner wall of the lower groove 644, the lower pulley 14 cannot disengage from the lower groove 644, further improving the stability of the lifting drive component 42 during movement and printing.

[0071] More specifically, there are two or more upper pulleys 13 and two or more lower pulleys 14. The lifting drive component 42 has more support points on the slide rail 64, resulting in greater stability during movement and printing.

[0072] Reference Figure 4 , Figure 5 , Figure 6 In one embodiment, the lifting sensing module includes an upward sensing group 11 and a downward sensing group 12. The upward sensing group 11 is disposed on the lifting drive member 42 and the print head 41 to sense the highest value of the print head 41 rising. The downward sensing group 12 is disposed on the print head 41 to sense the lowest value of the print head 41 falling.

[0073] Specifically, the rising sensing group 11 includes a first photoelectric sensor 111 fixed on the print head 41 and a first blocking member 112 fixed on the print head 41. When the lifting drive member 42 drives the print head 41 to rise, the first blocking member 112 enters the sensing area of ​​the first photoelectric sensor 111.

[0074] Specifically, the descent sensing group 12 includes a pressure limit 121 and a second photoelectric sensor 122. The pressure limit 121 is retractably mounted on the print head 41, and the second photoelectric sensor 122 is mounted on the print head 41. When the print head 41 descends, the pressure limit 121 is pushed upward and enters the sensing range of the second photoelectric sensor 122.

[0075] In one embodiment, the printhead 41 includes a housing 44, in which a fixed bracket 45 is provided; the housing 44 has a through hole 441, through which the pressure limit 121 is disposed; along the extension and retraction direction of the pressure limit 121, the second photoelectric sensor 122 is fixed on the fixed bracket 45; when the pressure limit 121 retracts, the pressure limit 121 enters the sensing area of ​​the second photoelectric sensor 122; when the pressure limit 121 extends, the pressure limit 121 leaves the sensing area of ​​the second photoelectric sensor 122.

[0076] It is understood that the sensing port of the second photoelectric sensor 122 is oriented toward the extension and retraction direction of the pressure limit 121.

[0077] Reference Figure 5 Specifically, the fixed bracket 45 includes a secondary left support 451, a secondary right support 452, and a secondary transverse support 453, and the second photoelectric sensor 122 is disposed on the top of the secondary left support 451 and the secondary right support 452.

[0078] One end of the secondary lateral support 453 is connected to the secondary left support 451, and the other end is connected to the secondary right support 452;

[0079] The pressure limit 121 is provided with a stepped structure 1211 and a limiting structure 1212 located inside the outer shell 44. The limiting structure 1212 is arranged adjacent to the through hole 441. The limiting structure 1212 is used to prevent the pressure limit 121 from falling out of the through hole 441. The stepped structure 1211 and the limiting structure 1212 are arranged adjacent to each other.

[0080] A spring (not shown in the figure) is provided inside the outer shell 44. One end of the spring abuts against the secondary transverse support 453, and the other end is provided on the stepped structure 1211.

[0081] During printing, the book pushes the pressure limit 121 back, and the spring is squeezed. At this time, the pressure limit 121 is within the sensing area of ​​the second photoelectric sensor 122. When the print head 41 is lifted, the spring relaxes, causing the pressure limit 121 to extend out and move away from the printing area of ​​the second photoelectric sensor 122. With this setting, the limiting structure 1212 can stabilize the extension and contraction of the pressure limit 121 and reduce the occurrence of the pressure limit 121 getting stuck in the outer casing 44.

[0082] Specifically, the secondary transverse support 453 is provided with a through groove 4531, and the pressure limit 121 is always set to pass through the through groove 4531.

[0083] The through groove 4531, in conjunction with the through hole 441, can completely determine the direction of movement of the pressure limit 121, preventing the pressure limit 121 from shifting at one end of the housing 44, which would cause the pressure limit 121 to fail.

[0084] More specifically, the length of the pressure limit 121 within the housing 44 is greater than the length from the secondary lateral support 453 to the inner wall of the housing 44, to ensure that the pressure limit 121 does not detach from the secondary lateral support 453.

[0085] Reference Figure 2 , Figure 3 Specifically, the gantry frame 6 includes a transverse support rod 61, and the positioning module 2 includes a third photoelectric sensor 201 disposed on the lifting drive component 42 and a third blocking component 202 slidably disposed on the transverse support rod 61.

[0086] When the third photoelectric sensor 201 slides to the side of the third blocking member 202 along with the lifting drive member 42, the third blocking member 202 is located in the sensing area of ​​the third photoelectric sensor 201, and at this time the lifting drive member 42 drives the print head 41 to descend.

[0087] When the print head 41 slides, the third photoelectric sensor 201 moves to the third blocking member 202, and the print head 41 performs a printing operation.

[0088] Among them, the third photoelectric sensor 201 uses optical signal transmission, which has high sensitivity and is not easily affected by electromagnetic interference and stray light interference. It has high anti-interference ability and strong working stability. In addition, the third photoelectric sensor 201 and the third blocking component 202 are small in size, have great space advantage, and are easy to install.

[0089] More specifically, the transverse support rod 61 is provided with a limiting post 611, and the positioning module 2 includes a position marker 21 and a moving block 22;

[0090] The movable block 22 is provided with a movable limiting groove 221, and the limiting post 611 is located in the movable limiting groove 221;

[0091] The movable block 22 slides along the movable limiting groove 221 on the transverse support rod 61, and its maximum movement distance is limited by the limiting post 611;

[0092] The position marker 21 is fixedly connected to the moving block 22, and the position marker 21 is used to emit light to mark the position to be printed.

[0093] In use, place the book to be printed under the gantry 6, adjust the position of the positioning module 2 to locate the position to be printed, start the printer, and when the print head 41 moves to the positioning module 2, the print head 41 performs the printing operation.

[0094] It is understood that the movable limiting groove 221 is a long groove, and the movable limiting post 611 abuts against the end of the long groove to limit the movable block 22 and prevent the movable block 22 from falling off the transverse support member 24.

[0095] Specifically, there are two limiting posts 611 and two movable limiting grooves 221, and the two movable limiting grooves 221 are respectively provided on both sides of the position marker 21, with one movable limiting groove 221 passing through one limiting post 611.

[0096] Understandably, the position marker 21 can emit a medium onto the book to help the user determine the area to be printed. If the position marker 21 is an infrared light emitter, it can emit infrared marking light onto the book. Of course, the light emitted by the position marker 21 can also be any light that can form a sharp contrast with the area to be printed, such as green, purple, or blue.

[0097] More specifically, the movable block 22 is provided with an assisting component 222 to assist in moving the movable block 22.

[0098] In use, manually move the movable block 22 to make the position marker 21 move synchronously and the movable block 22 move relative to the limit post 611. When it moves to the appropriate position, stop moving the movable block 22 to adjust the marking point of the position marker 21.

[0099] Reference Figure 1 and Figure 2 In one embodiment, the print head 41 is provided with a nozzle 411 for inkjet printing, and a nozzle cover 51 is provided on one side of the placement plate 5. The nozzle cover 51 covers the outside of the nozzle 411 to reduce ink evaporation in the nozzle 411 and reduce the impact of ink evaporation at the nozzle 411 on the printing effect.

[0100] More specifically, the nozzle cover 51 is connected to the placement plate 5 by a spring 52, so that the nozzle cover 51 is elastic along the extension and retraction direction of the print head 41, avoiding the possibility of the nozzle cover 51 and the nozzle 411 coming into rigid contact.

[0101] In one embodiment, the system further includes a housing 7 located on the shelf 5 and outside the gantry 6, the print head 41, the lifting drive 42, the lateral drive 43, the lifting sensing module, the positioning module 2, and the lateral sensing module. The housing 7 has a front slot 71 and a rear slot 72 arranged opposite to each other, which are used for placing printed documents through the slots.

[0102] During printing, the books to be printed are inserted from the front slot 71 of the gantry 6, pass through the rear slot 72, and the part to be printed is adjusted to be below the gantry 6. This setting of the rear slot 72 leaves more space to adjust the position of the books to be printed.

[0103] Reference Figure 1 In one embodiment, a control panel 73 is fixed to the housing 7, and the control panel 73 is communicatively connected to the print head 41. Printing information can be input on the control panel 73, and the print head 41 will print the corresponding information.

[0104] Reference Figures 7 to 10 In one embodiment, the lateral movement sensing module includes a left sensing group 31 and a right sensing group 32.

[0105] The left sensing group 31 is disposed on the left support member 62 and is used to sense whether the lifting drive member 42 has moved to one side of the left support member 62.

[0106] The right sensor group 32 is disposed on the right support member 63 and is used to sense whether the lifting drive member 42 has moved to one side of the right support member 63.

[0107] Both the left sensing group 31 and the right sensing group 32 are in communication with the lateral movement drive 43. When the lifting drive 42 moves to the side of the left support 62 or the right support 63, the lateral movement drive 43 stops driving the lifting drive 42 or drives the lifting drive 42 to move in the opposite direction.

[0108] The working principle of this embodiment is as follows: The horizontal drive 43 rotates forward, driving the lifting drive 42 to move towards the left support 62. When the lifting drive 42 moves to the side of the left support 62, the horizontal drive 43 can stop driving the lifting drive 42. The lifting drive 42 can perform printing operations or remain in its current state as the return state of the lifting drive 42. Alternatively, the horizontal drive 43 can rotate in reverse, driving the lifting drive 42 to move towards the right support 63 until the lifting drive 42 moves to the side of the right support 63.

[0109] It is understood that the aforementioned forward and reverse rotation of the lateral drive member 43 is only used to indicate that the lateral drive member 43 drives the lifting drive member 42 to move in the opposite direction; it can also mean that when the lateral drive member 43 reverses, the lifting drive member 42 moves toward the right support member 63, and when the lateral drive member 43 rotates forward, the lifting drive member 42 moves toward the left support member 62.

[0110] The lateral drive 43 drives the lifting drive 42 to reciprocate laterally on the slide rail 64. The left sensor group 31 and the right sensor group 32 are both in communication with the lateral drive 43. When the lifting drive 42 moves to the side of the left support member 62 or the right support member 63, the lateral drive 43 stops driving the lifting drive 42 or drives the lifting drive 42 to move in the opposite direction, thereby avoiding collision between the lifting drive 42 and the left support member 62 or the right support member 63, which would cause the position of the lifting drive 42 to shift. This ensures that the lifting drive 42 moves stably on the secondary lateral support member 453, thereby ensuring good printing effect and printing quality.

[0111] In one embodiment, the left sensing group 31 includes a left photoelectric sensor 311 and a left blocking member 312 disposed on the left side of the lifting drive member 42, and the left photoelectric sensor 311 is disposed on the top of the left support member 62.

[0112] When the lifting drive 42 moves toward the left support 62, the left blocking member 312 moves synchronously until the left blocking member 312 intersects with the left photoelectric sensor 311. At this point, the lateral drive 43 stops driving the lifting drive 42 to move or drives the lifting drive 42 to move in the opposite direction.

[0113] In one embodiment, the right sensing group 32 includes a right photoelectric sensor 321 and a right blocking member 322 disposed on the right side of the lifting drive member 42.

[0114] The right photoelectric sensor 321 is disposed on the side of the right support member 63 facing away from the left support member 62;

[0115] The right support member 63 is provided with a right slot 631 adjacent to the right photoelectric sensor 321, and the right slot 631 is used for the right blocking member 322 to pass through.

[0116] When the lifting drive 42 moves toward the right support 63, the right blocking member 322 moves synchronously until the right blocking member 322 intersects with the right photoelectric sensor 321. At this point, the lateral drive 43 stops driving the lifting drive 42 to move or drives the lifting drive 42 to move in the opposite direction.

[0117] The right photoelectric sensor 321 is located on the side of the right support member 63 facing away from the left support member 62. Compared with the right photoelectric sensor 321 being located on the side of the right support member 63 facing the left support member 62, the lifting drive member 42 has a shorter movement distance in the latter structure, while the former is longer. Therefore, this solution can further expand the printing range of the lifting drive member 42.

[0118] In one embodiment, the right support member 63 is provided with a mounting base 632 on its top, and the fixed end of the transverse drive member 43 is fixed on the mounting base 632.

[0119] As can be seen from the above structure, the weight of the secondary horizontal support 453, the lifting drive 42, the left sensor group 31, and the right sensor group 32 are all transferred to the books on the load through the left support 62 and the right support 63. The mounting base 632 is set on the top of the right support 63, and the right support 63 directly bears the weight of the horizontal drive 43. The right support 63 has fewer stress concentration points and better compressive strength, which makes the printer more stable and has a longer service life.

[0120] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A document printer that facilitates archiving, characterized in that: It includes a shelf (5), a gantry (6), a print head (41), a lifting drive (42), a horizontal movement drive (43), a lifting sensor module, a positioning module (2), and a horizontal movement sensor module; The gantry (6) is fixed on the shelf (5), the fixed end of the lifting drive (42) is slidably disposed on the gantry (6), the print head (41) is connected to the output end of the lifting drive (42), the fixed end of the transverse drive (43) is disposed on the gantry (6), the output end of the transverse drive (43) is connected to the fixed end of the lifting drive (42), the transverse drive (43) is used to drive the lifting drive (42) and the print head (41) to reciprocate transversely on the gantry (6), the lifting sensing module is disposed on the print head (41) and the lifting drive (42), the lifting sensing module is connected to the lifting drive (42), and the transverse sensing module is connected to the transverse drive (43). The positioning module (2) is mounted on the gantry (6); When the lifting sensor module senses that the print head (41) has risen to the highest value, the lifting drive (42) stops driving the print head (41) to rise or drives the print head (41) to fall. When the lifting sensor module senses that the print head (41) has descended to the lowest value, the lifting drive (42) stops driving the print head (41) to descend or drives the print head (41) to rise. When the lateral movement sensing module senses that the print head (41) has moved to the edge of the gantry (6) or the positioning module (2), the lateral movement drive (43) stops driving the print head (41) to move or drives the print head (41) to move in the opposite direction. The gantry (6) includes a transverse support rod (61), and the positioning module (2) includes a third photoelectric sensor (201) disposed on the lifting drive (42) and a third blocking member (202) slidably disposed on the transverse support rod (61). When the third photoelectric sensor (201) slides to the side of the third blocking member (202) along with the lifting drive member (42), the third blocking member (202) is located in the sensing area of ​​the third photoelectric sensor (201), and at this time the lifting drive member (42) drives the print head (41) to descend; The transverse support rod (61) is provided with a limiting post (611), and the positioning module (2) includes a position marker (21) and a moving block (22). The movable block (22) is provided with a movable limiting groove (221), and the limiting post (611) is located in the movable limiting groove (221); The moving block (22) slides along the moving limiting groove (221) on the transverse support rod (61) and is limited by the limiting post (611) to move the maximum distance. The position marker (21) is fixedly connected to the moving block (22), and the position marker (21) is used to emit light to mark the position to be printed.

2. The document printer as described in claim 1, characterized in that: The lifting sensing module includes an upward sensing group (11) and a downward sensing group (12). The upward sensing group (11) is located on the lifting drive (42) and the print head (41) to sense the highest value of the print head (41) rising. The downward sensing group (12) is located on the print head (41) to sense the lowest value of the print head (41) falling.

3. The document printer as described in claim 2, characterized in that: The rising sensing group (11) includes a first photoelectric sensor (111) fixed on the print head (41) and a first blocking member (112) fixed on the print head (41). When the lifting drive member (42) drives the print head (41) to rise, the first blocking member (112) enters the sensing area of ​​the first photoelectric sensor (111).

4. The document printer as described in claim 2, characterized in that: The descent sensing group (12) includes a pressure limit (121) and a second photoelectric sensor (122). The pressure limit (121) is retractably mounted on the print head (41), and the second photoelectric sensor (122) is mounted on the print head (41). When the print head (41) descends, the pressure limit (121) is pushed upward and enters the sensing range of the second photoelectric sensor (122).

5. The document printer as described in claim 1, characterized in that: The movable block (22) is provided with an assisting component (222) to assist in moving the movable block (22).

6. The document printer as described in claim 1, characterized in that: The printhead (41) is provided with a nozzle (411) for inkjet printing. A nozzle cover (51) is provided on one side of the shelf (5). The nozzle cover (51) covers the outside of the nozzle (411) to reduce ink evaporation in the nozzle (411).

7. The document printer as described in claim 6, characterized in that: The nozzle cover (51) is connected to the shelf (5) by a spring (52).

8. The document printer as described in claim 1, characterized in that: It also includes a housing (7), which is located on the shelf (5) and is located outside the gantry (6), the print head (41), the lifting drive (42), the traverse drive (43), the lifting sensing module, the positioning module (2), and the traverse sensing module. The housing (7) is provided with a front slot (71) and a rear slot (72) arranged opposite to each other. The front slot (71) and the rear slot (72) are used for the printing document to pass through and be placed.

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