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Secret code printing method, tracing method and system based on black-and-white printing file

A technology for printing documents and passwords, applied in the field of forensic identification or criminal science, it can solve the problems of poor accuracy and unsatisfactory inspection effect of the printing document formation time, and achieve the effect of improving accuracy and convenient use.

Pending Publication Date: 2020-10-13
袁迦萱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many uncertainties due to the various factors affecting the formation time inspection of printed documents.
Therefore, so far, the inspection effect of the printing file formation time is not ideal, and the accuracy is poor

Method used

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  • Secret code printing method, tracing method and system based on black-and-white printing file
  • Secret code printing method, tracing method and system based on black-and-white printing file
  • Secret code printing method, tracing method and system based on black-and-white printing file

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] For the secret code printing method based on black and white print files, see figure 1 , including the following steps:

[0040] S1: Obtain the file to be printed;

[0041] Specifically, the obtained file to be printed is an electronic document, which may be in image format, PDF format or text format.

[0042] S2: identifying at least one blank space in the file to be printed;

[0043] Specifically, the method automatically finds blank spaces in the printed document to lay out the password, for example, at least three blank spaces are found within one page of the printed document to lay out the password. This method lays out the password in the blank space, which can prevent the password from overlapping with the content or picture of the printed file, and fully considers the layout of the content or picture in the printed file.

[0044] S3: Obtain the file information of the file to be printed;

[0045] Specifically, the file information includes one or a combinati...

Embodiment 2

[0059] Embodiment 2 On the basis of other embodiments, the following content is also added:

[0060] A traceability method based on black and white printed documents, see figure 2 , including the following steps:

[0061] S11: Obtain the printed file to be traced; the printed file to be traced is printed according to the above-mentioned password printing method;

[0062] Specifically, this method is mainly used to trace the source of the file information of the printed file to be traced, that is, to obtain the printing time and printer information of the printed file to be traced. The printed file to be traced is obtained by printing using the printing method in Embodiment 1.

[0063] S12: Identify the password in the printed document to be traced by the identification device;

[0064] Specifically, the method does not limit specific identification equipment, and the identification equipment needs to have a magnification function, for example, a device with a magnifying gl...

Embodiment 3

[0069] Embodiment 3 On the basis of other embodiments, the following content is also added:

[0070] A traceability system based on black and white printed documents, see image 3 ,include:

[0071] Processing device: used to obtain the printed file to be traced; the printed file to be traced is printed according to the above-mentioned code printing method; the processing device is also used to analyze the code recognized by the identification device by using the code rule to obtain the printed file to be traced The file information of the file realizes the traceability of the printed file to be traced;

[0072] Specifically, the processing device may be a computer, or a mobile terminal or the like.

[0073] Identification equipment: used to identify the passwords in the printed documents to be traced, and send the identified passwords to the processing equipment.

[0074] The system identifies the password in the printed file to be traced through the identification device,...

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Abstract

The invention provides a secret code printing method and system based on a black-and-white printing file and a tracing method and system. The secret code printing method comprises the following steps:obtaining the file to be printed; identifying at least one blank in the to-be-printed file; obtaining file information of a to-be-printed file; generating a secret code at at least one blank of a to-be-printed file according to a preset secret code rule and the file information; and printing a to-be-printed file containing the secret code by using a black-and-white printer. According to the method, after the secret code corresponding to the file information is generated on the to-be-printed file, printing can be completed at a time through the black-and-white printer, and use is convenient. The generated secret codes can be in one-to-one correspondence with the file information, so that the file information of the printed file can be identified subsequently through the secret codes, and the subsequent printed file tracing and inspection accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of judicial appraisal or criminal science, and in particular relates to a code printing method based on black and white printed documents, a traceability method and a system. Background technique [0002] With the rapid development of social informatization, printers have become an indispensable writing tool for people to work and deal with daily affairs. At the same time, the development of printing document inspection technology is unstoppable. [0003] At present, the inspection of printed documents is mainly carried out from three aspects: printing trace characteristics, printing material components, and computer software. However, with the rapid development of science and technology in recent years, the printing traces of some high-precision printers used in the early stage are difficult to be found or even do not exist. The accuracy of printed document inspection is reduced, and it is more difficult ...

Claims

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Application Information

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IPC IPC(8): G06F3/12
CPCG06F3/1243G06F3/1273
Inventor 袁迦萱
Owner 袁迦萱
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