A method for restoring the original appearance of paper archives polluted by printing ink

A technology of paper archives and printing ink, applied in the post-processing of printing, printing, etc., can solve problems such as no problem solutions, and achieve the effect of simple operation and clear information

Active Publication Date: 2022-04-05
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • A method for restoring the original appearance of paper archives polluted by printing ink
  • A method for restoring the original appearance of paper archives polluted by printing ink
  • A method for restoring the original appearance of paper archives polluted by printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Place the paper archives polluted by printing ink on the plastic support net, immerse it in a tray filled with a 10% polyethylene glycol 400 aqueous solution, soak it at room temperature for 60 minutes, take out the plastic support net and paper archives.

[0034] Step 2: Immerse the paper files placed on the plastic support net into a tray filled with a sodium hypochlorite aqueous solution with an effective chlorine content of 2%, and soak for about 5 hours at room temperature until the ink stains are completely removed.

[0035] Step 3: Wash and soak the paper files placed on the plastic support net in ultrapure water for 10 minutes, repeat twice.

[0036] Step 4: Immerse the paper archives placed on the plastic support net in an aqueous solution of ascorbic acid with a mass concentration of 2%, soak for 3 minutes at room temperature, and take out the plastic support net and the paper archives.

[0037] Step 5: Repeat step 3 for washing, and then dry the pape...

Embodiment 2

[0040] Step 1: Put the paper archives polluted by printing ink on the plastic support net, immerse it in a tray filled with an 8% polyethylene glycol 800 aqueous solution, and soak it at room temperature for 45 minutes, then take out the plastic support net and paper quality files.

[0041] Step 2: Immerse the paper files placed on the plastic support net into a tray filled with a sodium hypochlorite aqueous solution with an effective chlorine content of 3%, and soak for about 2 hours at room temperature until the ink stains are completely removed.

[0042] Step 3: Wash and soak the paper files placed on the plastic support net in ultrapure water for 15 minutes, repeat twice

[0043] Step 4: Immerse the paper archives placed on the plastic support net in an aqueous ascorbic acid solution with a mass concentration of 5%, soak for 5 minutes at room temperature, and take out the plastic support net and the paper archives.

[0044] Step 5: Repeat the third step of washing, and th...

Embodiment 3

[0047] Step 1: Place the paper archives polluted by printing ink on the plastic support net, immerse it in a tray filled with a 13% polyethylene glycol 200 aqueous solution, and soak it at room temperature for 80 minutes, then take out the plastic support net and paper quality files.

[0048] Step 2: Immerse the paper files placed on the plastic support net into a tray filled with a sodium hypochlorite aqueous solution with an effective chlorine content of 1%, and soak at room temperature for about 10 hours until the ink stains are completely removed.

[0049] Step 3: Wash and soak the paper files placed on the plastic support net in ultrapure water for 8 minutes, repeat twice

[0050] Step 4: Immerse the paper archives placed on the plastic support net in an aqueous ascorbic acid solution with a mass concentration of 4%, soak for 3 minutes at room temperature, and take out the plastic support net and the paper archives.

[0051] Step 5: Repeat the third step of washing, and ...

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Abstract

The invention discloses a method for restoring the original appearance of paper files polluted by printing ink. In the method, the paper files polluted by printing ink are soaked in polyethylene glycol aqueous solution, then soaked in sodium hypochlorite aqueous solution, and finally soaked in ascorbic acid. Soaking in aqueous solution can remove printing ink and restore the original appearance of contaminated files. The method of the invention is easy to operate, and the materials used are safe and environment-friendly, and the written information, seals and red and black neutral signature pens recorded in the recovered paper archives are clear and complete.

Description

technical field [0001] The invention belongs to the technical field of archive restoration and protection, and in particular relates to a method for restoring the original appearance of paper archives polluted by printing ink. Background technique [0002] Paper archives have a long history and are widely used. In contemporary times, the contents of paper archives are mostly printed by machines, and important archives will be signed and sealed, such as contracts, agreements, reports, contracts, etc., and the recorded information often has extremely high value and need to be preserved for a long time. Due to human factors or storage reasons, these important files are often polluted by ink, which leads to the overwriting of important information recorded on the files, and some files containing seals and signatures lose their credential and legal effect, which brings great harm to enterprises and individuals. significant loss of profits. [0003] Inkjet ink, which is the main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M7/00
CPCB41M7/0063
Inventor 周亚军汪泳祁赟鹏李玉虎王瑞芳李艳丽
Owner SHAANXI NORMAL UNIV
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