JPS6089163A - Method for reuse of print paper - Google Patents

Abstract

PURPOSE:To save paper and to decrease paper storage space by using a specific paper sheet for a paper sheet used for a facsimile or a printer, applying optical or chemical processing to the paper to display information, and erasing the information. CONSTITUTION:Photochromic films applied with a photochromic material on the films are used for paper sheets 7, 5 being employed for a facsimile or printer or the like, a white light is irradiated on the film so as to display information by coloring. The photochromic film 7 after the information is displayed is inserted again to a priner 6 fitted with a print data erasing device, and the film 5 whose information is erased is outputted by irradiating the ultraviolet ray with a print data erasing device section. Since the film is reused for plural number of times, the stock of paper and supply due to consumption are not required.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of using paper used in facsimiles, printers, and the like.

Among the information output from fax machines, printers, etc.
For example, in the future, data from newspapers and information network services sent to households by facsimile may be viewed temporarily, and there will be little need to store it afterwards.

The hard copies currently output from the above-mentioned devices are printed on paper using ink or the like, and once used paper cannot be used multiple times.

In the near future, facsimile machines for newspapers and printers for temporary hard copy of information network service data will become commonplace in ordinary homes, and if the consumption of printing paper increases explosively, it will be essential to conserve finite resources. The cost of printing paper becomes negligible. Furthermore, there are cases in which a general household cannot secure enough space to store paper.

No. 11\1 is a conceptual diagram when conventional disposable printing paper is used. In the figure, 1 is a device such as a printer, 2 is paper, 3 is paper on which information is displayed, and 4- is stock paper. In order to avoid running out of printing paper, it is necessary to stock a certain amount of printing paper on the staff and to replenish it one after another, which causes the above-mentioned problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for reusing printing paper that can save paper used in facsimile machines, printers, etc. and reduce paper tube space.

In order to achieve the above object, the printing paper recycling method according to the present invention involves applying optical or chemical treatment to the paper used in facsimiles, printers, etc. using a specific paper, or using a specific ink to the paper. By displaying a clear warning, and then applying optical or chemical treatment, or after a certain period of time has elapsed,
Erase the information and use the paper multiple times.

Hereinafter, the method of the present invention will be explained in more detail with reference to the drawings and the like.

There are two main methods for erasing printed information: The first is that after a certain period of time has passed after printing,
This is a method to automatically erase printed information and clothing. The second method is to erase the printed information using heat, chemicals, special light, etc.

An example of the first method is a method in which an ink having a property that when exposed to air, the pigment in the ink undergoes a chemical change and changes to colorless and transparent. An example of the second method is a method in which the pigment in the ink is changed to colorless and transparent by applying heat, chemicals, or special light such as ultraviolet rays to the ink.

Next, in consideration of reuse many times, a film that can withstand many times of use is used for the paper used.

Some of these films utilize a photochromic effect. That is, a photochromic film, which is a film coated with a photochromic material, is used to display information by irradiating it with white light and coloring it, and erasing the information by irradiating it with ultraviolet rays.

FIG. 2 is a conceptual diagram showing the usage state of the printer with a print data erasing mechanism. The print data erasing mechanism attached to the printer shown in this figure does not apply to other embodiments, except for the embodiment in which ink is used, in which the pigment undergoes a chemical change after a certain period of time when exposed to air and becomes colorless and transparent. It can be used for. For example, the information can be erased by inserting the above-mentioned photochromic film on which information is displayed into the printer again and irradiating it with ultraviolet rays using the print data erasing mechanism.

According to the present invention, it is only necessary to prepare the number of print sheets corresponding to the type of each print data. For example, it can be used in two ways: one sheet of paper for printing newspaper faxes, and one sheet of hard copy paper for news network services. This eliminates the need to stock paper and replenish paper as it is consumed. 6 in the diagram
5.7 is a printer with a print data erasing mechanism, and 5.7 is a reusable printing paper.

As explained above, the method of the present invention reuses printing paper multiple times.

Therefore, in the future, even ordinary households will be able to use fax and IN
When more and more terminal equipment for information network services such as S is installed, there will be an explosive increase in the consumption of printing paper such as newspapers sent by facsimile or hard copies of CRT display data of information network services. This makes it possible to save limited resources, reduce the cost of printing paper, and eliminate the need for storage space for printing paper.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of the use of a printer using conventional disposable printing paper, and FIG. 2 is a conceptual diagram of a printer with a print data erasing mechanism for explaining the printing paper reuse method according to the present invention. 1...Printer 2...Paper 3...Printed paper 4...Stock paper 5.7
... Reusable paper 6 ... Printer with print data erasing mechanism Patent applicant: NEC Corporation Representative, Patent attorney Hisashi Inoro

Claims (1)

[Claims] The paper used in facsimiles, printers, etc. may be optically or chemically treated using specific paper, or
Alternatively, information can be displayed on paper by using a specific ink, and then that information can be erased by optical or chemical treatment or after a certain period of time has elapsed, and the paper can be used multiple times. A method of reusing printing paper that is characterized by LVk.