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Image forming material, method and device for removing images, and image forming process and apparatus

a technology of image forming and material, applied in the field of image forming material, can solve the problems of high paper consumption, high level of information output, and inability to recycle paper at a low cos

Inactive Publication Date: 2005-07-21
MOCHIZUKI HIDEHIRO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides an image forming material that can form a stable and high-grade image on an ordinary image recording material and can be easily removed without using a wet treatment. The image forming material includes an image forming substance and a binding force reducing substance that reduces the binding force between the image and the recording material when heated. The invention also provides a method for removing the image from the recording material and a device for carrying out the method. The technical effects of the invention include improved image quality, recycling of recording materials, and simplification of the image forming process."

Problems solved by technology

With rapid progress of various information recording and transmitting means, the level of information output has very increased and paper consumption has increased significantly.
Such a method has a problem because the recyclable paper is not available at a low cost.
This method has a problem because the discolored material remaining on the paper adversely affect the surface smoothness thereof so that it is difficult to reuse same for image formation.
This toner, however, requires a wet treatment to remove the toner images from the image-bearing recording material and, therefore, has a problem because the size of the paper increases due to swelling.

Method used

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  • Image forming material, method and device for removing images, and image forming process and apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0099] Toner (Imagio Toner Type 18 manufactured by Ricoh Company, Ltd.) as an image forming substance and C17H35PO3H2 powder having an average particle diameter of 3 μm as a binding force reducing substance were mixed using a mill to obtain a developer (an image forming material) containing 20% by weight of the binding force reducing substance based on a total weight of the image forming substance and the low melting point substance. Using the thus obtained developer, a toner image having an image density of 1.2 was formed on plain paper (PPC paper Type 6200 manufactured by Ricoh Company, Ltd.) at a paper feed rate of about 30 mm / second. The temperature of the toner image fixing roll was about 100° C. The toner image was evaluated for fixation by scratching the image bearing paper with a nail. The fixation was rated as follows: [0100] A: the image is not removed at all [0101] B: part of the image remains unremoved [0102] C: the image is completely removed

The results are shown in T...

example 2

[0109] Polyacrylic acid particles (as fine support particles) were dispersed in toluene. A binding force reducing substance (C17H35PO3H2 powder) was then added to the dispersion and the mixture was heated at 90-95° C. with stirring so that the C17H35PO3H2 was bound to the polyacrylic acid particles. The toluene was then removed from the mixture to leave solids which were subsequently milled to obtain an external additive powder having an average particle size of 3 μm. The thus obtained external additive was mixed with toner (Imagio Toner Type 18 manufactured by Ricoh Company, Ltd.) using a mill to obtain a developer having a C17H35PO3H2 content of 4% by weight and a polyacrylic acid content of 1% by weight based on a total weight of the toner and the external additive. Using the thus obtained developer, an image was formed on a paper and the image was removed from the paper in the same manner as described in Example 1. The fixation and removability are shown in Table 1.

example 3

[0110] Example 2 was repeated in the same manner as described except that the amount of the external additive was increased so that the developer had a C17H35PO3H2 content of 8% by weight and a polyacrylic acid content of 2% by weight based on a total weight of the toner and the external additive. The results are shown in Table 1.

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Abstract

An image forming material for forming an image on an image recording material with an image binding force being established between the image and the image recording material, the image forming material containing an image forming substance, and a binding force reducing substance which reduces the image binding force when the image is heated. A method of removing an image formed on an image recording material with a binding force being established between the image and the recording material by contacting a stripping member with the image with heating under pressure. A binding force reducing substance may be contained in the surface of the stripping member or in the image recording material.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates generally to an image forming material and, more specifically, to an image forming material for forming a stable image on an image recording material by, for example, ordinary printing such as letterpress printing or lithographic printing, electrophotography, ink jet printing, thermal transfer recording or writing such as with crayon or pens, wherein the image is able to be removed from the image recording material. The present invention is also directed to a method for removing an image on an image recording material, to a device for carrying out the method, to a process for forming an image and to an apparatus for carrying out the process. [0002] With rapid progress of various information recording and transmitting means, the level of information output has very increased and paper consumption has increased significantly. In an effort to reduce the consumption of paper and to conserve forest resources, recycling of waste pa...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B41M7/00C09D11/00C09D11/02G03G9/09G03G9/093G03G9/097
CPCB41M7/0009C09D11/02C09D11/30G03G7/0086G03G8/00G03G9/0821G03G21/00G03G9/0926G03G9/09392G03G9/09708G03G9/09733G03G9/09783G03G11/00G03G9/08782
Inventor MOCHIZUKI, HIDEHIROSAITOU, TADASHI
Owner MOCHIZUKI HIDEHIRO