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Image decolorizing apparatus

一种图象、记录媒体的技术，应用在打印装置、复制/标记方法、仪器等方向，能够解决图象消失、内部色素隐蔽力不足、成本高等问题，达到再利用有效、消去特性优异、工业价值大的效果

Inactive Publication Date: 2007-11-21
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a problem that it usually takes several minutes to ensure the light resistance of the image even if a strong light source is used.
It is extremely inconvenient especially for partially erasing images
The problem with the second approach is that the image will disappear over time because the constituent species, which are essentially colorless, are stable
In addition, in order to produce color, it is necessary to program heating and rapid cooling, so there is a problem that it is inconvenient to use
The problem with the third method is that the hiding power of the internal pigment is insufficient in the reversible material using scattered
In this method, the image cannot be restored to a white background
The problem with the fourth method is that the heat stability is low, and the color will gradually fade even at room temperature.
However, in this method, since a solvent is used, a safety device, a mechanism for recovering the solvent, etc. are inevitably required, so the size of the device is large and the cost is high, so there is a problem that it cannot be used instead of office crushing as desired by the user.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In the apparatus of this embodiment, a rubbing roller with a surface roughness processed to #400 was used as a rubbing mechanism, and a heating roller was used as a heating mechanism.

[0044] Referring to Fig. 2, the apparatus related to this embodiment will be described. The recording medium is conveyed at a constant speed by a pair of rubber conveying rollers 2 provided near between the inlets 1 . After the first transport roller 2 , facing the elastic roller 3 , a rubbing roller 4 is provided. The recording surface of the recording medium is ground by the rubbing roller 4, where the main image forming material is peeled off. The rubbing roller 4 and the recording medium were driven at a relative speed of 25 mm / sec. The elastic roller 3 is freely rotatable, and when the recording medium is not clamped, it rotates at the same speed as the passing roller 4, so the surface will not be damaged due to friction with the passing roller.

[0045] A pair of second transpor...

Embodiment 2

[0049] In the device of this embodiment, the stainless steel mesh sheet of #300 is used as the wiping mechanism, and the same heating roller as in Example 1 is used as the heating mechanism.

[0050] Referring to Fig. 3, the apparatus related to this embodiment will be described. The first transport roller 2 is the same as that of the first embodiment. There is a pair of rollers 13 behind the first conveying roller 2, and a stainless steel mesh sheet 15 is erected on one side thereof, and the stainless steel mesh sheet 15 is moved by a sheet conveying mechanism 14 at a speed faster than the paper conveying speed. The stainless steel mesh sheet 15 and the recording medium were driven at a relative speed of 30 mm / sec. The recording surface of the recording medium is ground by the stainless steel mesh sheet 15, where the main image forming material is peeled off. The stainless steel mesh sheet 15 is passed through a suction cleaning device 16 installed during its conveyance to ...

Embodiment 3

[0055] The apparatus of the present embodiment uses two rubbing rollers as the rubbing mechanism, and uses an infrared heater as the heating mechanism. In addition, between the two rubbing rollers, an optical sensor for sensing the reflected optical density of the surface of the recording medium, and a control device for controlling the speed of the second rubbing roller based on the output thereof are provided.

[0056] Referring to Fig. 4, the apparatus related to this embodiment will be described. Up to the first rubbing roller 2, it is the same as the first embodiment. After the first rubbing roller 2, an optical sensor 21 is provided to sense the grinding state of the recording surface of the recording medium. Have the device 23 of the driving condition that controls the 2nd to wipe off roller 22, so that detect the difference of the reflection density of the image forming portion after wiping and the reflection density of recorded medium itself, or the reflection densit...

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PUM

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Abstract

The invention provides an image erasing device which can well eliminate images formed on ordinary paper with erasable imprinting material for good reusable purpose and safety performance. The image erasing device uses the erasable image forming material, eliminates the image formed on the recording media; the erasable image forming material has color rendering compounds, chromogenic reagent, adhesive resin, an apparatus brushing the recording media at a temperature lower than the softening point of the adhesive resin, and an apparatus heating the brushing surface of the recording media to a temperature higher than the softening point of the adhesive resin.

Description

technical field [0001] The present invention relates to a device for erasing an image formed from an erasable image-forming material containing a color-developing compound and a color-developing agent and a binder resin. Background technique [0002] Due to the popularization of OA in recent years, the data volume of various information tends to increase, and the output of hard copy information on paper by printers also increases year by year accordingly. However, environmental (forest) protection and (timber) resource protection are urgent matters all over the world at present. From this point of view, it is extremely important to minimize hard copy output and not waste paper. [0003] As a method of reusing paper in offices, various proposals have been made in the past. Roughly, there are the following two methods. [0004] [1] Scratch the surface of the recording medium to scrape off the image forming material. [0005] [2] Heat the recording medium, transfer the image...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M7/00B41M5/337B41J29/26G03G21/00
CPCB41J29/26G03G9/0928G03G21/18G03G21/1892
Inventor 高山晓佐野健二五反田武志
Owner KK TOSHIBA