Printer paper management system

Abstract

To improve work efficiency when using recycled paper. [Solution] A printer paper management system is disclosed, including a printing device, a drive control module, an image capture module, and an image processing module. The printing device performs printing operations at the printing position. The drive control module is connected to the printing device and transmits paper from the paper tray to the printing position, allows the printing device to perform printing operations on the paper, and can invert the paper. The image capture module is provided between the paper tray and the printing position and captures an image of the paper before it is transmitted from the paper tray to the printing position by the drive control module. The image processing module is connected to the image capture module and the drive control module, receives and preprocesses the image of the paper, extracts image features and transmits them to the drive control module, which determines whether to perform printing operations on the paper based on the image features.

Description

Technical Field

[0001] The present invention relates to a printer system, and particularly to a printer paper management system that automatically detects whether a sheet of paper has been used by image recognition technology, selects an unused side, and performs a printing operation, thereby reducing paper consumption and improving work efficiency.

Background Art

[0002] Generally, commercially available general single-function printers have only basic printing functions and no intelligent paper management functions. When it is desired to use recycled paper for printing, the user usually has to manually check whether the paper is still usable and set the paper in the correct direction. However, manual paper checking not only takes time, but is also prone to errors, resulting in a decrease in work efficiency. In addition, manual paper checking is also prone to human errors such as misidentifying used paper as unused, resulting in waste of paper and printing materials. Waste of paper not only increases business costs, but also burdens the environment.

[0003] Therefore, it is necessary to provide a printer paper management system that automatically detects whether a sheet of paper has been used by image recognition technology, selects an unused side, and performs a printing operation, thereby reducing paper consumption and improving work efficiency.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a printer paper management system that automatically detects whether a sheet of paper has been used by image recognition technology, selects an unused side, and performs a printing operation, thereby reducing paper consumption, improving work efficiency, conforming to the current society that emphasizes environmental protection, and promoting the development of a green office.

[0005] Another object of the present invention is to provide a printer paper management system. By placing an image capture module, such as a pair of cameras or a pair of scanning elements, on the transmission path from the paper tray to the print position, images of the front and back of the paper can be captured before the paper reaches the print position. An image processing module receives and processes the images of the front and back of the paper to extract image features and determine the usage status of the front and back of the paper. A drive control module determines, based on the image features, whether to print on the current paper, automatically turn the page and use it, or eject the paper and load another sheet to print. Whether single-sided or double-sided printing, the printer paper management system can automate paper detection and selection, significantly improving work efficiency. The image processing module preprocesses images using precise image recognition technology and image processing algorithms, analyzes features such as characters and images on the paper, and extracts useful image features to accurately determine the usage status of the paper and perform the corresponding printing operation, thereby effectively reducing paper waste, aligning with environmental protection trends, and reducing the environmental burden. On the other hand, the automatic paper selection function of the printer paper management system eliminates the need for manual selection by the user, preventing incorrect paper placement, printing errors, and reprints, thereby improving the user's printing experience to be smarter and more convenient.

[0006] To achieve the above objectives, the present invention provides a printer paper management system including a printing device, a drive control module, an image capture module, and an image processing module. The printing device is configured to perform printing operations at the print position. The drive control module is connected to the printing device and transmits paper from the paper tray to the print position, allows the printing device to perform printing operations on the paper, and can flip the paper. The image capture module is provided between the paper tray and the print position and is configured to capture an image of the paper before the paper is transmitted from the paper tray to the print position by the drive control module. The image processing module is connected to the image capture module and the drive control module, receives and preprocesses the image of the paper, extracts image features and transmits them to the drive control module, which then determines, based on the image features, whether or not to perform printing operations on the paper.

[0007] In one embodiment, the drive control module determines whether the surface of the paper is used or unused based on image features.

[0008] In one embodiment, if it is determined that the surface of the paper is unused, the drive control module transmits the paper to the printing position, and the printing device performs the printing operation on the surface of the paper.

[0009] In one embodiment, if it is determined that the front surface of the paper is used, the drive control module flips the paper so that the front surface becomes the back surface, transmits the paper to the printing position, and performs printing on the other side of the paper using the printing device.

[0010] In one embodiment, if the surface of the paper is determined to be used, the drive control module moves the paper away from the printing position and loads another sheet of paper from the paper tray.

[0011] In one embodiment, the drive control module transmits paper from the paper tray to the printing position along a first transmission path, and the image capture module is located on one side of the first transmission path and spatially faces the surface of the paper.

[0012] In one embodiment, the drive control module transmits the paper to the print position along the second transmission path, inverts it, and then returns it to the print position, and transmits the paper from the print position to the paper discharge position along the third transmission path, a first turning point is formed between the second and third transmission paths, a second turning point is formed between the second and first transmission paths, and the first and second turning points are located behind and in front of the print position, respectively.

[0013] In one embodiment, the image capture module is located between the second turning point and the print position.

[0014] In one embodiment, the image features include text regions, image regions, edges, or contrast.

[0015] To achieve the above objectives, the present invention provides another printer paper management system including a printing device, a drive control module, an image capture module, and an image processing module. The printing device is configured to perform a printing operation at the printing position. The drive control module is connected to the printing device and is configured to transmit paper from the paper tray to the printing position, allowing the printing device to perform a printing operation on the surface of the paper and to allow the paper to be flipped over. The image capture module is located at the printing position between the paper tray and the printing device and is configured to capture an image of the paper before the paper is transmitted from the paper tray to the printing position by the drive control module. The image processing module is connected to the image capture module, receives the image of the paper, extracts image features and transmits them to the drive control module, which then determines, based on the image features, whether to perform a printing operation on the paper.

[0016] In one embodiment, the drive control module determines whether the front and back surfaces of the paper are used or unused based on image features.

[0017] In one embodiment, if the surface of the paper is determined to be in the unused state, the drive control module transmits the paper to the printing position, and the printing device performs the printing operation on the surface of the paper.

[0018] In one embodiment, if it is determined that the front side of the paper is used and the back side is unused, the drive control module flips the paper over, transmits the paper to the printing position, and performs printing on the paper using the printing device.

[0019] In one embodiment, if it is determined that both the front and back sides of the paper are used, the drive control module moves the paper away from the printing position and loads another sheet of paper into the paper tray.

[0020] In one embodiment, if it is determined that both the front and back sides of the paper are unused, the drive control module transmits the paper to the printing position, the printing device performs printing on the front side of the paper, then the paper is flipped over and transmitted to the printing position for printing, and the printing operation is a double-sided printing operation.

[0021] In one embodiment, if it is determined that either the front or back side of the paper is used, the drive control module moves the paper away from the printing position, loads another sheet of paper from the paper tray, and the printing operation is a double-sided printing operation.

[0022] In one embodiment, the image capture module is a pair of spatially opposing cameras or a pair of scanning elements, configured to capture an image of the paper as the drive control module transmits the paper and passes through the image capture module, the image including a front image and a back image, the drive control module determines whether the front of the paper is used or unused based on image features extracted from the front image, and the drive control module determines whether the back of the paper is used or unused based on image features extracted from the back image.

[0023] In one embodiment, the drive control module transmits the paper from the paper tray to the printing position along the first transmission path, and the image capture module is located on one side of the first transmission path and spatially faces the surface of the paper.

[0024] In one embodiment, the drive control module transmits the paper along the second transmission path to the printing position, reverses it, and then returns it to the printing position, transmits the paper from the printing position to the paper discharge position along the third transmission path. A first turning point is formed between the second transmission path and the third transmission path, and a second turning point is formed between the second transmission path and the first transmission path. The first turning point and the second turning point are respectively located behind and in front of the printing position.

[0025] In one embodiment, the image capture module is located between the second turning point and the printing position.

Brief Description of the Drawings

[0026] The following detailed description of the present case and schematic diagrams of the embodiments are for those skilled in the art to fully understand the above content and do not limit the present case. [Figure 1] It is a structural conceptual diagram of a printer paper management system according to the first embodiment of the present invention. [Figure 2] It is a structural conceptual diagram of a printer paper management system according to the second embodiment of the present invention.

Modes for Carrying Out the Invention

[0027] Several typical embodiments illustrating the features and advantages of the present invention will be described in detail in the following description. The present invention can have various variations in different embodiments, none of which depart from the scope of the invention, and the description and drawings are used essentially for illustrative purposes only and are not intended to limit the invention. For example, where the following description of the present invention mentions placing a first feature above or above a second feature, it indicates that embodiments include those in which the placed first feature is in direct contact with the second feature, and also includes those in which an additional feature is placed between the first and second features, thereby preventing the first feature from directly contacting the second feature. Furthermore, overlapping reference numerals and / or symbols may be used in different embodiments of the present invention. These overlaps are for the purpose of simplification and clarity and are not used to limit the relationships between each embodiment and / or the aforementioned external structures. Additionally, spatially related terms such as “forward,” “backward,” “before,” “after,” and similar terms may be used to briefly describe the relationship between components or feature elements and other components or feature elements in the drawings. In addition to the orientations shown in the drawings, spatial terms are used to include different orientations of the device in use or operation. The device may be positioned separately (e.g., rotated 90 degrees or positioned in other orientations), and the descriptions of spatial terms used therein should be interpreted accordingly. Furthermore, when one component is said to be “connected” or “joined” to another component, it may be directly connected or joined to the other component, or there may be an intervening component. Furthermore, terms such as “first,” “second,” etc., may be used in the claims to describe different components, but these components should not be limited by these terms, and it should be understood that these components described in embodiments are indicated by different component symbols. These terms are for distinguishing different components. For example, the first component may be referred to as the second component, and similarly, the second component may be referred to as the first component, without departing from the scope of the embodiment.As used herein, the term "and / or" includes any combination of one or more of the related items listed.

[0028] Figure 1 is a conceptual diagram of the structure of a printer paper management system according to a first embodiment of the present invention. The present invention provides a printer paper management system 1 for automatically detecting paper and performing single-sided or double-sided printing. In this embodiment, the printer paper management system 1 includes a printing device 10, a drive control module 20, an image capture module 30, and an image processing module 40. The printing device 10 is positioned at the print position L2 to perform the printing operation. The drive control module 20 is connected to the printing device 10 and transmits the paper 8 from the paper tray 9 to the print position L2, and is configured so that the printing device 10 performs the printing operation on the surface of the paper 8 and can flip the paper 8. The image capture module 30 is positioned between the paper tray 9 and the print position L2 of the printing device 10 and is configured to capture an image of the paper 8 before it is transmitted from the paper tray 9 to the print position L2 by the drive control module 20. The image processing module 40 is connected to the image capture module 30, receives the image from the paper 8, performs preprocessing, and simultaneously extracts image features and transmits them to the drive control module 20. Based on the image features, the drive control module 20 decides whether to print on the paper 8, move it away from the print position L2, or flip the paper 8.

[0029] In this embodiment, the image capture module 30 is a pair of cameras or scanning elements that are spatially opposite to each other, so as the drive control module 20 transmits the paper 8 and it passes through the shooting position L1 of the image capture module 30, it captures an image. In this embodiment, as the paper 8 passes through the shooting position L1 of the image capture module 30, the pair of cameras or scanning elements of the image capture module 30 are spatially opposite to the front and back surfaces of the paper 8, respectively. In other words, the image captured by the image capture module 30 as the paper 8 passes through the shooting position L1 includes a front surface image and a back surface image of the paper 8. In this embodiment, the drive control module 20 can determine whether the front surface of the paper 8 is used or unused based on image features extracted from the front surface image. The drive control module 20 can determine whether the back surface of the paper 8 is used or unused based on image features extracted from the back surface image.

[0030] In this embodiment, if the printing operation to be performed by the printing device 10 is a single-sided printing operation, the drive control module 20 determines whether to transmit the paper 8 based on the image characteristics of the paper 8 and whether the printing device 10 will perform a printing operation on the paper 8. If it is determined that the front surface of the paper 8 is unused, the drive control module 20 transmits the paper 8 to the printing position L2 along the first transmission path P1, and the printing device 10 performs a printing operation on the front surface of the paper 8. If it is determined that the front surface of the paper 8 is used and the back surface is unused, the drive control module 20 does not perform a printing operation when transmitting the paper 8 to the printing position L2 along the first transmission path P1, the drive control module 20 flips the paper 8 so that the front surface becomes the back surface along the second transmission path P2, transmits the paper 8 to the printing position L2, and the printing device 10 performs a single-sided printing operation on the other side of the paper 8. Furthermore, if it is determined that both the front and back sides of paper 8 are used, the drive control module 20 moves paper 8 away from the print position L2 along the third transmission path P3 and ejects it to the output tray 7, and the drive control module 20 simultaneously loads another sheet of paper 8' from the paper tray 9. The printer paper management system 1 processes paper 8' according to the above process, so its explanation is omitted here.

[0031] In this embodiment, the drive control module 20 combines, for example, a paper feeding mechanism and a control unit (not shown), and can set the transmission path of the paper 8 as needed. In this embodiment, the drive control module 20 transmits the paper 8 from the paper tray 9 to the print position L2 along the first transmission path P1. Here, the image capture module 30 is located on one side of the first transmission path P1 such that the paper 8 passes the image capture module 30's shooting position L1 as it is transmitted along the first transmission path P1. In one embodiment, the image capture module 30 includes a single camera or scanning element and is spatially opposite the surface of the paper 8. If the surface of the paper 8 is determined to be used, the drive control module 20 moves the paper 8 directly away from the print position L2 along the third transmission path P3, and the drive control module 20 loads another sheet of paper 8' directly from the paper tray 9 without flipping the paper 8. Of course, the present invention is not limited thereto. In this embodiment, the drive control module 20 transmits the paper 8 from the print position L2 along the second transmission path P2, inverts it, and returns it to the print position L2, and transmits the paper from the print position L2 to the output position (output tray 7) along the third transmission path P3. Here, a first turning point T1 is formed between the second transmission path P2 and the third transmission path P3, and the drive control module 20 selects whether to invert or eject the paper 8 passing through the first turning point T1. A second turning point T2 is formed between the second transmission path P2 and the first transmission path P1, and the drive control module 20 loads the unused other side of the paper 8 for the printing operation of the printing device 10 at the second turning point T2. In this embodiment, the first turning point T1 and the second turning point T2 are located behind and in front of the print position L2, respectively. In this embodiment, the image capture module 30 and the image processing module 40 are positioned between the second turning point T2 and the paper tray 9, which is advantageous for configuring the image capture module 30 and the image processing module 40 with respect to the first transmission path P1 of the drive control module 20. Of course, the present invention is not limited thereto.

[0032] Furthermore, in this embodiment, if the printing operation performed by the printing device 10 is a double-sided printing operation, the drive control module 20 may decide whether to transmit the paper 8 based on the image characteristics of the paper 8 and whether the printing device 10 should perform the printing operation on the paper 8. If it is determined that both the front and back sides of the paper 8 are unused, the drive control module 20 transmits the paper 8 to the printing position L2 along the first transmission path P1, and the printing device 10 performs the printing operation on the front side of the paper 8. After that, the drive control module 20 flips the paper 8 along the second transmission path P2 so that the front side becomes the back side, transmits the paper 8 to the printing position L2, and the printing device 10 performs the printing operation on the other side of the paper 8, completing the double-sided printing operation. If it is determined that either the front or back side of the paper 8 is used, the drive control module 20 moves the paper 8 away from the printing position L2 along the third transmission path P3 and discharges it to the output tray 7, and at the same time the drive control module 20 loads another sheet of paper 8' from the paper tray 9. The printer paper management system 1 processes paper 8' according to the procedure described above, so the explanation is omitted here.

[0033] Figure 2 is a conceptual diagram of the structure of a printer paper management system according to a second embodiment of the present invention. In this embodiment, the printer paper management system 1a includes a printing device 10, a drive control module 20, an image capture module 30, and an image processing module 40. The printing device 10 is positioned at the printing position L2 and performs single-sided or double-sided printing. The drive control module 20 is connected to the printing device 10 and is configured to transmit paper 8 from the paper tray 9 to the printing position L2, allowing the printing device 10 to print on the surface of the paper 8 and to invert the paper 8 so that the front surface becomes the back surface. The image capture module 30 is provided between the paper tray 9 and the printing position L2 of the printing device 10 and is configured to capture an image of the paper 8 before the drive control module 20 transmits the paper 8 from the paper tray 9 to the printing position L2. The image processing module 40 is connected to the image capture module 30 and the drive control module 20, receives the image of the paper 8, performs preprocessing, extracts image features, and transmits them to the drive control module 20. The drive control module 20 determines, based on the image features, whether to perform printing on paper 8, move it away from the printing position L2, or flip paper 8.

[0034] In this embodiment, the image capture module 30 is a single camera or scanning element configured to capture an image of the paper 8 as the drive control module 20 transmits the paper 8 and it passes the image capture module 30's shooting position L1'. In other words, the image capture module 30 captures an image of the surface of the paper 8 as it passes the image capture position L1' so that the drive control module 20 can determine whether the surface of the paper 8 is used or unused. If it is determined that the surface of the paper 8 is used, the drive control module 20 flips the paper 8 so that the front surface becomes the back surface and transmits the paper to the print position L2. In this embodiment, the image capture module 30 is located between the second turning point T2 and the print position L2. Thus, the drive control module 20 flips the other side of the paper 8, and before it passes the image capture module 30's shooting position L1' before it is transmitted to the print position L2, the image capture module 30 and the image processing module 40 recognize the usage status of the other side of the paper 8 and decide whether to perform printing on the other side of the paper 8. Of course, in other embodiments, the drive control module 20 may omit the paper reversal function of the second transmission path P2. When it is determined that the surface of paper 8 is used, the drive control module 20 directly moves paper 8 away from the print position L2 along the third transmission path P3 and discharges it to the output tray 7, while simultaneously loading another sheet of paper 8' from the paper tray 9. The printer paper management system 1a processes paper 8' in the manner described above, so its explanation is omitted here. In other embodiments, when the printing device 10 performs double-sided printing at the print position L2, the image capture module 30 captures an image of the surface of paper 8 as it passes the shooting position L1' along the first transmission path P1 from the paper tray 9, and the drive control module 20 reverses paper 8 along the second transmission path P2 so that an image can be captured when the other side of paper 8 passes the shooting position L1'. This allows the printer paper management system 1a to determine whether to perform double-sided printing on paper 8 after obtaining the usage status of both sides of paper 8. Of course, the present invention is not limited thereto.

[0035] In the above embodiment, the installation positions of the image capture module 30 and the image processing module 40 may be changed as needed. Since the shooting positions L1 and L1' of the image capture module 30 are in front of the printing position L2, the image capture module 30 can capture an image before the printing surface of the paper 8 enters the printing position L2, and the image processing module 40 can receive the image and extract image features to determine the state of the paper's printing surface. In this embodiment, the image features include character areas, image areas, edges, or black and white contrast. The image processing module 40 can accurately determine the state of the paper 8 through the image features and automate the paper selection function. Furthermore, with the development of AI technology, the image processing technology of the image processing module 40 can also be made more reliable by sending related images to a PC or server for analysis. Of course, the printer paper management systems 1 and 1a can also cooperate with the printing device 10 to perform various sorting and printing operations at the printing position L2 through the image features extracted by image recognition technology, and this embodiment is not limited to this, so a detailed explanation is omitted here.

[0036] Based on the above, the present invention provides a printer paper management system that uses image recognition technology to automatically detect whether paper has been used, selects an unused side for printing, thereby reducing paper consumption, improving work efficiency, adapting to today's environmentally conscious society, and promoting the development of green offices. In this invention, for example, an image capture module consisting of a pair of cameras or a pair of scanning elements is placed in the transmission path between the paper tray and the printing position, allowing images of the front and back sides of the paper to be captured before the paper reaches the printing position. An image processing module can determine the usage status of the front and back sides of the paper by receiving and processing the images of the front and back sides of the paper to extract image features. A drive control module determines, based on the image features, whether to print on the current paper, automatically flip the paper over for use, or eject the paper and print on another sheet of paper. Whether for single-sided or double-sided printing, the printer paper management system can achieve automated detection and paper selection, significantly improving work efficiency. The image processing module preprocesses images through precise image recognition technology and image processing algorithms, analyzing the characteristics of characters, images, etc. on the paper to extract useful image features. By accurately determining the paper usage status and executing the corresponding printing task, it effectively reduces paper waste, aligns with environmental protection trends, and lowers the environmental burden. Meanwhile, the automated paper selection function of the printer paper management system eliminates manual selection by the user, preventing incorrect paper placement, printing errors, and reprints, thus improving the user's printing experience to be smarter and more convenient.

[0037] While the present invention can be modified in various ways by those skilled in the art, these modifications will not depart from the scope of the claims of the present invention. [Explanation of Symbols]

[0038] 1, 1a: Printer paper management system 10: Printing equipment 20: Drive control module 30: Image capture module 40: Image processing module 7: Paper output tray 8, 8': Paper 9: Paper tray L1, L1': Shooting position L2:Print position P1: First transmission path P2: Second transmission path P3: Third transmission path T1: First Turning Point T2: Second Turning Point

Claims

1. It is a printer paper management system, It includes a printing device, a drive control module, an image capture module, and an image processing module. The aforementioned printing device is configured to perform printing operations at the printing position. The drive control module is connected to the printing device and is configured to transmit paper from the paper tray to the printing position, to allow the printing device to perform the printing operation on the surface of the paper, and to be able to flip the paper so that the surface becomes the back side. The image capture module is provided between the paper tray and the print position of the printing device and is configured to capture an image of the paper before the paper is transmitted from the paper tray to the print position by the drive control module. A printer paper management system comprising: an image processing module connected to an image capture module and a drive control module; the image processing module receiving the image on the paper, extracting image features, and transmitting them to the drive control module; and the drive control module determining, based on the image features, whether or not to perform the printing operation on the paper.

2. The printer paper management system according to claim 1, wherein the drive control module determines whether the surface of the paper is used or unused based on the image features.

3. The printer paper management system according to claim 2, wherein, when it is determined that the surface of the paper is in the unused state, the drive control module transmits the paper to the printing position, and the printing device performs the printing operation on the surface of the paper.

4. The printer paper management system according to claim 2, wherein, if the surface of the paper is determined to be in the used state, the drive control module inverts the paper so that the surface becomes the back, transmits the paper to the printing position, and performs the printing operation on the other side of the paper using the printing device.

5. The printer paper management system according to claim 2, wherein if the surface of the paper is determined to be in the used state, the drive control module moves the paper away from the printing position, and the drive control module loads another sheet of paper from the paper tray.

6. The drive control module transmits the paper from the paper tray to the print position along the first transmission path. The printer paper management system according to claim 1, wherein the image capture module is located on one side of the first transmission path and spatially faces the surface of the paper.

7. The drive control module transmits the paper along the second transmission path to the printing position, inverts it, and then returns it to the printing position, and transmits the paper from the printing position to the paper output position along the third transmission path. The printer paper management system according to claim 6, wherein a first turning point is formed between the second transmission path and the third transmission path, a second turning point is formed between the second transmission path and the first transmission path, and the first turning point and the second turning point are located behind and in front of the printing position, respectively.

8. The printer paper management system according to claim 7, wherein the image capture module is located between the second turning point and the print position.

9. The printer paper management system according to claim 1, wherein the image features include a character area, an image area, an edge, or contrast.

10. It is a printer paper management system, It includes a printing device, a drive control module, an image capture module, and an image processing module. The aforementioned printing device is configured to perform printing operations at the printing position. The drive control module is connected to the printing device and is configured to transmit paper from the paper tray to the printing position, allowing the printing device to perform the printing operation on the surface of the paper, and to allow the paper to be flipped over. The image capture module is provided between the paper tray and the print position of the printing device and is configured to capture an image of the paper before the paper is transmitted from the paper tray to the print position by the drive control module. A printer paper management system comprising: an image processing module connected to an image capture module, which receives the image on the paper, extracts image features and transmits them to a drive control module, and the drive control module determines, based on the image features, whether or not to perform the printing operation on the paper.

11. The printer paper management system according to claim 10, wherein the drive control module determines whether the front and back surfaces of the paper are used or unused based on the image features.

12. The printer paper management system according to claim 11, wherein, when it is determined that the surface of the paper is in the unused state, the drive control module transmits the paper to the printing position, and the printing device performs the printing operation on the surface of the paper.

13. The printer paper management system according to claim 11, wherein, when it is determined that the front surface of the paper is in the used state and the back surface is in the unused state, the drive control module inverts the paper, transmits the paper to the printing position, and performs the printing operation on the paper using the printing device.

14. The printer paper management system according to claim 11, wherein if the front and back surfaces of the paper are determined to be in the used state, the drive control module moves the paper away from the printing position, and the drive control module loads another sheet of paper into the paper tray.

15. The printer paper management system according to claim 11, wherein, when it is determined that both the front and back surfaces of the paper are in the unused state, the drive control module transmits the paper to the printing position, the printing device performs the printing operation on the front surface of the paper, inverts the paper and transmits it to the printing position to perform the printing operation, and the printing operation is a double-sided printing operation.

16. The printer paper management system according to claim 11, wherein if it is determined that either the front or back surface of the paper is in the used state, the drive control module moves the paper away from the printing position, the drive control module loads another sheet of paper from the paper tray, and the printing operation is a double-sided printing operation.

17. The image capture module is a pair of cameras or a pair of scanning elements that are spatially opposite to each other, and is configured to capture the image on the paper when the drive control module transmits the paper and passes through the image capture module. The aforementioned image includes a front image and a back image. The drive control module determines whether the surface of the paper is used or unused based on the image features extracted from the surface image. The printer paper management system according to claim 10, wherein the drive control module determines whether the back side of the paper is used or unused based on the image features extracted from the back side image.

18. The drive control module transmits the paper from the paper tray to the print position along the first transmission path. The printer paper management system according to claim 10, wherein the image capture module is located on one side of the first transmission path and spatially faces the surface of the paper.

19. The drive control module transmits the paper along the second transmission path to the printing position, inverts it, and then returns it to the printing position, and transmits the paper from the printing position to the paper output position along the third transmission path. The printer paper management system according to claim 18, wherein a first turning point is formed between the second transmission path and the third transmission path, a second turning point is formed between the second transmission path and the first transmission path, and the first turning point and the second turning point are located behind and in front of the printing position, respectively.

20. The printer paper management system according to claim 19, wherein the image capture module is located between the second turning point and the print position.

Images