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A technology for removing laser printing or copying writing on the surface of paper

A laser printing and paper technology, applied in chemical paint/ink remover, coating, etc., can solve unseen problems, achieve the effect of easy procurement, simple and easy removal method, and wide application range

Active Publication Date: 2020-08-11
胡锴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no domestic patent related to the removal of writing on the surface of paper after laser printing and copying

Method used

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  • A technology for removing laser printing or copying writing on the surface of paper

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Effect test

Embodiment 1

[0028] Take the removal of the handwriting on the surface of the paper after laser printing as an example, where the laser printer used is the HPLaserJet1020 laser printer. The concrete process of this embodiment is:

[0029] Step 1: Prepare the solution: Use a graduated cylinder to measure 500mL of denture base resin (Type II) self-setting denture water and 10mL of hydrofluoric acid (analytical grade), and mix them in the container;

[0030] Step 2: Removal of handwriting: completely immerse the paper to be cleaned of handwriting in the prepared solution, and place the solution in an ultrasonic cleaner. Turn on the ultrasonic cleaner and after it has been operating for about 2 minutes, turn off the device and remove the paper from the solution. During this implementation process, due to the pungent odor of tooth dehydration and the volatility of hydrofluoric acid (analytical pure), it is best to carry out under ventilated conditions.

[0031] Step 3: Paper drying: Wash the ...

Embodiment 2

[0033] Taking the removal of writing on the surface of paper after laser copying as an example, the laser copier used is a Canon iR2016J copier. The concrete process of this embodiment is:

[0034] Step 1: Prepare the solution: Use a graduated cylinder to measure 500mL of denture base resin (Type II) self-setting denture water and 10mL of hydrofluoric acid (analytical grade), and mix them in the container;

[0035] Step 2: Removal of handwriting: completely immerse the paper to be cleaned of handwriting in the prepared solution, and place the solution in an ultrasonic cleaner. Turn on the ultrasonic cleaner and after it has been operating for about 2 minutes, turn off the device and remove the paper from the solution. During this implementation process, due to the pungent odor of tooth dehydration and the volatility of hydrofluoric acid (analytical pure), it is best to carry out under ventilated conditions.

[0036] Step 3: Paper drying: Wash the cleared paper in tap water t...

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Abstract

The invention discloses a technology for removing laser printed or copied writings on a paper surface, wherein the technology includes a removing solution and a removing method. The removing solution formula comprises hydrofluoric acid, a self-solidifying denture base polymer (also known as a dental base acrylic resin liquid) and water (tap water or distilled water) with the preparation ratio described in the description. The removing method comprises paper soaking. With utilization of the theory of 'similarity and intermiscibility', the laser printed or copied writings on the paper surface are dissolved by the prepared solution, so as to achieve the purpose of removal. Because the dissolution method almost has no damage to the paper, the paper having the writings removed can be recycled.

Description

technical field [0001] The invention relates to a method for removing laser printing or copying writing on the surface of paper, in particular to a method for removing laser printing or copying writing on the surface of paper by configuring a solution and using chemical dissolution. Background technique [0002] With the rapid popularization of computers and the Internet, and the acceleration of government, enterprise, and family information construction, laser printers and laser copiers are relatively cheap because of their high imaging quality, fast printing / copying speed, and large-scale printing / copying. advantages and has been widely used. At present, laser printers and laser copiers have become indispensable output devices for modern offices. [0003] At the same time, the surge of documents and materials caused by the increase of modern office activities, and the reprinting / copying of printing / copying errors caused by human factors have also caused a large amount of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D9/00
CPCC09D9/00
Inventor 胡锴张涛庄期凯
Owner 胡锴
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