Seal verification apparatus and method, stamping machine

Abstract

This invention provides a stamp verification device and method, and a stamping machine. The device is mounted on the paper feed tray of the stamping machine and includes a backlight unit, a data acquisition unit, and a verification unit. The backlight unit, mounted on the paper feed tray, illuminates the back of the document to be stamped. The data acquisition unit acquires image information of the document to be stamped and sends it to the verification unit. The verification unit analyzes the image information to obtain the brightness uniformity of the document to be stamped and determines whether the document is abnormal based on the magnitude of the brightness uniformity. The technical solution of the stamp verification device and method provided by this invention can determine whether the document to be stamped is abnormal, thereby enabling timely detection of unauthorized personnel engaging in overprinting.

Description

Technical Field

[0001] This invention relates to the field of office automation technology, specifically to a stamping verification device and method, and a stamping machine. Background Technology

[0002] In daily management, the traditional method of seal management involves assigning specific personnel to be responsible for the use and maintenance of seals. This method is not only inefficient and costly, but also struggles to prevent violations of seal management regulations and actions against the will of the parties involved. Such violations often result in significant losses for the company or organization. To address these issues, automated seal-applying machines are attracting increasing attention.

[0003] Currently, some bank tellers, driven by profit, engage in illegal stamping practices. This involves cutting holes in the stamping area of ​​compliant documents and placing non-compliant documents underneath them to obtain the stamp. Although the stamping machines have a mandatory photo archiving function, this practice cannot be detected from the photographs. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a stamp verification device and method, and a stamping machine, which can determine whether the document to be stamped is abnormal, thereby enabling timely detection of whether unauthorized personnel are engaging in overprinting.

[0005] To achieve the above objectives, the present invention provides a stamp verification device, which is installed on the paper feed tray of a stamping machine, and includes a backlight unit, a data acquisition unit, and a verification unit, wherein...

[0006] The backlight unit is disposed on the paper feed tray and is used to illuminate the back of the document to be stamped placed on the paper feed tray;

[0007] The acquisition unit is used to acquire image information of the document to be stamped and send it to the verification unit;

[0008] The verification unit is used to analyze the image information to obtain the brightness uniformity of the document to be stamped, and to determine whether the document to be stamped is abnormal based on the magnitude of the brightness uniformity.

[0009] Optionally, the backlight unit includes a light-transmitting base plate and a light source, wherein,

[0010] The light-transmitting base plate is disposed on the paper feed tray and is used to support the document to be stamped;

[0011] The light source is located on the back of the light-transmitting base plate and is used to illuminate the back of the document to be stamped through the light-transmitting base plate.

[0012] Optionally, the light-transmitting substrate is configured to diffusely reflect the transmitted light.

[0013] Optionally, the light source includes multiple point light sources, and the multiple point light sources are evenly arranged relative to the back of the light-transmitting substrate.

[0014] Optionally, the point light source includes an LED light.

[0015] Optionally, the illumination range of the backlight unit at least covers the bearing area of ​​the paper feed tray.

[0016] Optionally, the acquisition unit includes a camera, which is disposed in the printer and positioned above the paper feed tray when the paper feed tray is in the printer.

[0017] Optionally, the verification unit is used to analyze the image information to obtain the brightness of different areas of the document to be stamped, and to determine whether the brightness difference between different areas exceeds a preset range. If so, the document to be stamped is confirmed to be abnormal.

[0018] Optionally, the stamp verification device further includes an alarm unit and a control unit, wherein,

[0019] If the document to be stamped is abnormal, the verification unit sends an abnormal signal to the control unit; the control unit is used to stop executing the current operation instruction when it receives the abnormal signal, and to control the alarm unit to issue an alarm.

[0020] As another technical solution, the present invention also provides a printing machine, including a paper feed tray and a stamp verification device disposed on the paper feed tray, wherein the stamp verification device adopts the stamp verification device improved by the present invention.

[0021] As another technical solution, the present invention also provides a stamp verification method, which uses the stamp verification device provided by the present invention to determine whether the document to be stamped is abnormal. The stamp verification method includes:

[0022] When the paper tray of the printing press is moved into the printing press, the backlight unit is turned on to illuminate the back of the document to be stamped placed on the paper tray.

[0023] The acquisition unit acquires image information of the document to be stamped and sends it to the verification unit.

[0024] The verification unit analyzes the image information to obtain the brightness uniformity of the document to be stamped, and determines whether the document to be stamped is abnormal based on the magnitude of the brightness uniformity.

[0025] The beneficial effects of this invention are:

[0026] The technical solution of the stamp verification device and method provided by the present invention uses a backlight unit to illuminate the back of the document to be stamped placed on the paper feed tray; uses a collection unit to collect image information of the document to be stamped, and uses a verification unit to analyze the image information to obtain the brightness uniformity of the document to be stamped, and judges whether the document to be stamped is abnormal based on the magnitude of the brightness uniformity. If the brightness uniformity of the document to be stamped is poor, it indicates that there is a large difference in light transmittance at different positions of the document to be stamped, which indicates that there is a large difference in thickness at different positions of the document to be stamped, thereby enabling timely detection of whether unauthorized personnel are engaging in overprinting.

[0027] The stamping machine provided by the present invention can determine whether the document to be stamped is abnormal by using the stamping verification device provided by the present invention, thereby enabling timely detection of whether unauthorized personnel are engaging in overprinting. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the stamp verification device provided in an embodiment of the present invention;

[0029] Figure 2 This is a partial structural diagram of a printing press provided in an embodiment of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the stamping verification device and method and the stamping machine provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Please refer to the following: Figure 1 and Figure 2 The stamp verification device provided in this embodiment of the invention is installed on the paper feed tray 51 of the stamping machine 5. The stamp verification device includes a backlight unit 2, a collection unit 3, and a verification unit 4. The backlight unit 2 is installed on the paper feed tray 51 and is used to illuminate the back of the document 1 to be stamped, placed on the paper feed tray 51, thereby forming backlight on the back of the document 1 to be stamped. The document to be stamped is, for example, a paper document such as a ticket or document requiring stamping.

[0032] In this embodiment, as Figure 1 As shown, the backlight unit 2 includes a light-transmitting base plate 21 and a light source 22. The light-transmitting base plate 21 is disposed on the paper feed tray 51 and is used to support the stamped document 1. The light source 22 is disposed on the back side of the light-transmitting base plate 21 (i.e., the side away from the stamped document 1) and is used to illuminate the back side of the stamped document 1 through the light-transmitting base plate 21.

[0033] Optionally, the light-transmitting base plate 21 is configured to diffusely reflect the transmitted light, thereby allowing the light to uniformly illuminate the back of the document 1 to be stamped. Based on this, the light source 22 includes multiple point light sources, which are evenly arranged relative to the back of the light-transmitting base plate 21. These point light sources may include, for example, light-emitting elements such as LEDs. The light source 22 can emit white light or any other color of light; the present invention does not impose any particular limitation on this.

[0034] Of course, in practical applications, the light source 22 is not limited to a point light source, but can also be any other light source with any structure, such as a cold cathode tube light source.

[0035] Optionally, the illumination range of the backlight unit 2 covers at least the carrying area of ​​the paper feed tray 51, which is used to place the document to be stamped 1. This ensures that the backlight generated by the backlight unit 2 can accommodate any type of paper within the carrying area.

[0036] The acquisition unit 3 is used to acquire image information of the document 1 to be stamped and send it to the verification unit 4. For example, the acquisition unit 3 includes a camera, which is installed in the printing machine 5. When the paper tray 51 is in the printing machine 5, the camera is located above the bearing area of ​​the paper tray 51 to acquire image information of the document 1 to be stamped.

[0037] The verification unit 4 is used to analyze the image information sent by the acquisition unit 3 to obtain the brightness uniformity of the document to be stamped 1, and to determine whether the document to be stamped 1 is abnormal based on the magnitude of the brightness uniformity.

[0038] Based on the backlight provided by the backlight unit 2, assuming that the thickness of the document to be stamped 1 is uniform, the brightness at different positions of the document to be stamped 1 will also be roughly the same. Once there is a certain degree of difference in thickness at different positions of the document to be stamped 1, the light transmittance will be different, which will lead to differences in brightness at different positions of the document to be stamped 1. The greater the difference in thickness, the more obvious the difference in brightness. Based on this, the magnitude of the brightness difference at different positions of the document to be stamped 1, that is, the magnitude of the brightness uniformity, can be used to determine whether the document to be stamped is abnormal. If the brightness uniformity of the document to be stamped is poor, it means that there is a large difference in light transmittance at different positions of the document to be stamped. This indicates that there is a large difference in thickness at different positions of the document to be stamped. At this time, it can be confirmed that the document to be stamped is abnormal, so as to promptly detect whether unauthorized personnel are engaging in overprinting.

[0039] Optionally, the verification unit 4 analyzes the image information sent by the acquisition unit 3 to obtain the brightness of different areas of the document to be stamped 1, and determines whether the brightness difference between different areas exceeds a preset range. If so, the document to be stamped is confirmed to be abnormal. Of course, in practical applications, other arbitrary analysis methods can also be used to determine whether there are differences in thickness at different positions of the document to be stamped 1, so as to detect whether unauthorized personnel are engaging in overprinting behavior.

[0040] Optionally, the stamping verification device also includes an alarm unit and a control unit. If the verification unit 4 confirms that the document to be stamped 1 is abnormal, the verification unit 4 sends an abnormal signal to the control unit. The control unit is used to stop executing the current operation command upon receiving the abnormal signal and control the alarm unit to issue an alarm. The alarm can be issued in various ways, such as sound, light, and information.

[0041] As another technical solution, embodiments of the present invention also provide a printing machine, such as... Figure 2 As shown, the printing machine 5 includes a paper feed tray 51 and a stamp verification device disposed on the paper feed tray 51. The document to be stamped 1 is placed on the paper feed tray 51 and is located above the stamp verification device.

[0042] The stamp verification device uses the stamp verification device described above provided in the embodiments of the present invention.

[0043] The stamping machine provided in this embodiment of the invention can determine whether the document to be stamped is abnormal by using the stamping verification device provided in this embodiment of the invention, thereby enabling timely detection of whether unauthorized personnel are engaging in overprinting.

[0044] As another technical solution, this embodiment of the invention also provides a stamp verification method, which uses the stamp verification device provided in this embodiment of the invention to determine whether the document to be stamped is abnormal. Please refer to the following: Figure 1 and Figure 2 The stamp verification method includes:

[0045] Step 1: When the paper tray 51 of the printing press 5 is moved into the printing press 5, turn on the backlight unit 2 to illuminate the back of the document 1 to be stamped placed on the paper tray 51.

[0046] Step 2: Use the acquisition unit 3 to acquire the image information of the document to be stamped 1 and send it to the verification unit 4;

[0047] Step 3: Analyze the above image information using the verification unit 4 to obtain the brightness uniformity of the document to be stamped 1, and determine whether the document to be stamped 1 is abnormal based on the magnitude of the brightness uniformity.

[0048] The stamp verification method provided in this embodiment of the invention can determine whether the document to be stamped is abnormal by using the stamp verification device provided in this embodiment of the invention, thereby enabling timely detection of whether unauthorized personnel are engaging in overprinting behavior.

[0049] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A seal verification apparatus, characterized by, It is installed on the paper feed tray of the printer and includes a backlight unit, a data acquisition unit, a verification unit, an alarm unit, and a control unit. The backlight unit is disposed on the paper feed tray and is used to illuminate the back of the document to be stamped placed on the paper feed tray when the paper feed tray is moved into the printing machine, so that the light can illuminate the back of the document to be stamped evenly. The acquisition unit is used to acquire image information of the document to be stamped and send it to the verification unit; The verification unit is used to analyze the image information to obtain the brightness uniformity of the document to be stamped, and to determine whether the document to be stamped is abnormal based on the magnitude of the brightness uniformity. When the brightness uniformity of the document to be stamped is poor, it is determined that there is a difference in thickness at different positions of the document to be stamped, so as to detect in violation of regulations by overprinting. If the document to be stamped is abnormal, the verification unit sends an abnormal signal to the control unit; the control unit is used to stop executing the current operation instruction when it receives the abnormal signal, and to control the alarm unit to issue an alarm.

2. The stamp verification apparatus according to claim 1, characterized by The backlight unit includes a light-transmitting base plate and a light source, wherein... The light-transmitting base plate is disposed on the paper feed tray and is used to support the document to be stamped; The light source is located on the back of the light-transmitting base plate and is used to illuminate the back of the document to be stamped through the light-transmitting base plate.

3. The stamp verification device according to claim 2, characterized in that, The light-transmitting base plate is configured to diffusely reflect the transmitted light.

4. The stamp verification device according to claim 3, characterized in that, The light source includes multiple point light sources, and the multiple point light sources are evenly arranged relative to the back of the light-transmitting substrate.

5. The stamp verification device according to claim 4, characterized in that, The point light source includes LED lights.

6. The stamp verification device according to claim 1, characterized in that, The illumination range of the backlight unit at least covers the load-bearing area of ​​the paper feed tray.

7. The stamp verification device according to claim 1, characterized in that, The acquisition unit includes a camera, which is installed in the printing machine and positioned above the paper feed tray when the paper feed tray is in the printing machine.

8. The stamp verification device according to claim 1, characterized in that, The verification unit is used to analyze the image information to obtain the brightness of different areas of the document to be stamped, and to determine whether the brightness difference between different areas exceeds a preset range. If so, the document to be stamped is confirmed to be abnormal.

9. A printing machine, characterized in that, It includes a paper feed tray and a stamp verification device disposed on the paper feed tray, wherein the stamp verification device is the stamp verification device according to any one of claims 1-8.

10. A method for verifying stamps, characterized in that, The stamp verification device according to any one of claims 1-8 is used to determine whether the document to be stamped is abnormal, and the stamp verification method includes: When the paper tray of the printing press is moved into the printing press, the backlight unit is turned on to illuminate the back of the document to be stamped on the paper tray, so that the light can illuminate the back of the document to be stamped evenly. The acquisition unit acquires image information of the document to be stamped and sends it to the verification unit. The verification unit analyzes the image information to obtain the brightness uniformity of the document to be stamped, and judges whether the document to be stamped is abnormal based on the magnitude of the brightness uniformity. When the brightness uniformity of the document to be stamped is poor, it is determined that there is a difference in thickness at different positions of the document to be stamped, so as to detect the illegal overprinting behavior in a timely manner. If the document to be stamped is abnormal, the verification unit sends an abnormal signal to the control unit; the control unit is used to stop executing the current operation instruction when it receives the abnormal signal, and to control the alarm unit to issue an alarm.

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