JPH0717190A - Disposable recording supplies - Google Patents

Abstract

PURPOSE:To enable growth of vegetable without fertilization after land reclamation, by a method wherein in a throwaway recording article having ink, a part reservoiring the ink and a part recording the ink, it possesses a part constituted of biodegradable plastic, in which a fertilizer component consisting mainly of N2, P, K is contained. CONSTITUTION:In a throwaway recording article 101 possessing ink, a part 102 reservoiring the ink and a part 103 recording the ink, it possesses a part constituted of biodegradable plastic, the inside of which is constituted so as to possesses a fertilizer component consisting principally of N2, P, K. Since the recording article to be abondened contains an essential element for growth of vegetable, the vegetable can be grown without taking any treatment such as fertilization after land reclamation and effective recycling can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable recording material such as a recording device, a writing instrument, a refilling instrument and an ink jet head which uses a biodegradable plastic in at least a part of its constitution.

[0002]

2. Description of the Related Art In recent years, due to the emergence of computer civilization, many printers, which are one of the output devices, have been used. Further, many conventional recording tools such as ballpoint pens and felt-tip pens are still used.

A portion of a printer that directly controls recording is called a head, and includes a wire dot head, a thermal transfer head,
Inkjet heads and other methods are widely used. Among these heads, the inkjet head is widely used as an effective recording method because it can perform high-definition and high-speed recording and has a low running cost. Among the inkjet heads, there are one in which the recording unit and the ink tank are separated (separate head), and one in which the ink tank and the recording unit are integrated (integrated head). When the ink is used up, it is necessary to replenish the ink, but in the separated type, there is a method of converting the ink tank (also called a cartridge), in the integrated type, the method of replacing the entire head, and the method of replenishing the ink using a refill device. is there. After the ink is replenished, the used ink tanks, heads, and refill devices are almost always thrown away, and the amount of waste increases most with the increase in the amount of these used ink tanks, heads. Most of the refill equipment is made of synthetic plastic, and the disposal of waste is a big social problem. In addition, writing instruments such as ballpoint pens and felt-tip pens also have the same problem because they include a part made of synthetic plastic and are discarded after use.

While some of these waste plastics are recovered and incinerated, some are landfilled, some are abandoned in the natural world, the sea, rivers, mountains and the like. The plastic that is collected and incinerated may generate extremely intense heat during incineration, which may cause heat generation that exceeds the design calorific value of the incinerator, in which case the incinerator may be damaged. Further, many of them generate harmful gas when incinerated. In landfill disposal, it is becoming more difficult to secure a landfill site every year, and at the same time harmful substances are also landfilled and concentrated, and there is a problem that land subsidence may occur at the landfill site. is there. Furthermore, if left unattended in the natural world, it may flow into rivers and the sea and damage marine life.

In order to solve such a problem, a biodegradable plastic material is used, and even if it is landfilled or left in the sea, river, or mountain after use, these biodegradable materials are used. There is a method that does not cause a problem by the rapid decomposition of the functional plastic, and it is gradually being used. However, simply using biodegradable plastics is not a real solution to environmental problems, because when biodegradable plastics are discarded in the sea or river, it causes eutrophication of water quality,
When it is discarded in the mountain, rainwater seeps out from it and causes water pollution of groundwater and rivers.

Therefore, when biodegradable plastics are used, it is necessary to carry out landfill disposal under proper control. Further, if it is simply landfilled, carbon dioxide generated by the decomposition of the biodegradable plastic is released into the atmosphere and causes global warming. Therefore, it is desirable to cultivate the plant after landfilling.

When using the biodegradable plastic, a truly ideal method considering the entire global environment is to manufacture the biodegradable plastic again from the above-mentioned cellulose and starch in the cultivated plant as raw materials. This will enable complete recycling and solve environmental and resource issues.

[0008]

However, just by using biodegradable plastic as in the prior art, it is necessary to perform appropriate fertilization to grow plants after landfilling, and the time required for fertilization is There were problems such as personnel expenses.

[0009]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and its gist is to provide a biodegradable plastic in an ink and a disposable recording article having a portion for storing the ink and a portion for recording the ink. A disposable recording article, characterized in that it has a component part and a fertilizer component containing nitrogen, phosphorus and potassium as main components, and a fertilizer chamber in the part composed of the biodegradable plastic. The disposable recording article is characterized in that it is formed and contains a fertilizer component containing nitrogen, phosphorus and potassium as main components in the chamber.

[0010]

EFFECTS OF THE INVENTION According to the present invention, since the discarded recording supplies contain elements essential for plant growth, the plant can be grown without any treatment such as fertilization after landfilling, which is efficient. Can be recycled.

The present invention will be described in more detail below.

The following can be used as the biodegradable plastic used in the present invention.

1) Natural polymer system As a natural polymer system, benzylated wood (cellulose such as wood, lignin is alkali-treated with caustic soda, etc., and reacted with a chemical substance having a benzyl group and an acetyl group to form a plastic. Stuff), higher fatty acid esterified wood, wheat gluten with glycerin, glycol, emulsified silicone oil, and urea added. Cellulose with chitosan added (Shikoku Industrial Laboratory). Matterby (trade name) consisting of starch and modified PVA [Novamont / Nippon Synthetic Science Industry]. NOVON (trade name) with additives added to starch
[Warner Lambert]. Examples thereof include pullulan, alginic acid, chitin, chitosan, carrageenan, starch and the like.

2) Fermentation productivity As the fermentation production system polymer, 3-hydroxybutyric acid (H
B) and 3-hydroxyvaleric acid (HV) linear polyester, Biopol (trade name) [Zeneca] is available, which is produced by sugar fermentation with hydrogen bacteria.
The molecule itself is biodegradable. Furthermore, a linear polyester of 3-hydroxybutyric acid (HB) and 4-hydroxybutyric acid (HB) [Tokyo Institute of Technology, Institute of Resource Chemistry]. Polyhydroxyalkanoate (PHA, a generic term for polyester compounds produced by microorganisms). Curdlan (trade name) [Takeda Yakuhin] which is a polysaccharide composed of β-1,3-glucan. Bacterial cellulose [Ajinomoto], which is composed of microbial-derived cellulose, may be mentioned.

3) Chemical synthesis system As the chemical synthesis system, praxel or tone (trade name) [Daicel, UCC] made of polycaprolactone. Resomer consisting of polylactic acid / polyglycolide (trade name) [Dupont Mitsui / Kyowa Fermentation]. Polyglutamic acid [Ajinomoto] consisting of poly-γ-methylglutamate. Bionore (trade name) [Showa High Polymer] made of aliphatic polyester.
Examples thereof include polyester polyether, ethylene vinyl alcohol copolymer, polyester, polyether, polyurethane / aliphatic polyamide copolymer, aromatic polyester / aliphatic polyester copolymer, and polyamide.

In addition, water is finally produced by other microorganisms,
Any plastic can be used as long as it is decomposed into carbon dioxide and other minerals.

Regarding nitrogen, calcium, magnesium and sulfur in the total elemental composition which is another requirement of the present invention, the following is carried out.

Nitrogen: When the biodegradable plastic to be used contains nitrogen, for example, when urea is added, polyurethane, polyamide, etc., these become the nitrogen source. If the biodegradable plastic used does not contain nitrogen, use ammonium sulfate, urea, ammonium salt, ammonium nitrate, and other so-called nitrogen fertilizers as the nitrogen source. Phosphorus: Calcium superphosphate, ammonium phosphate, calcium superphosphate , Etc., using other phosphate fertilizers as a phosphorus source, potassium: potassium chloride, potassium sulfate, potassium nitrate, other potassium fertilizers, etc. calcium: lime, calcium fertilizer, etc. other calcium-containing fertilizers, magnesium: magnesia calci fertilizer, etc. Fertilizer, Sulfur: Ammonium sulfate, sodium sulfate, potassium sulfate and other sulfur-containing fertilizers.

The above fertilizer is used for recording heads, ink tanks,
A small chamber may be formed in a writing instrument or a refill device and used by putting it in it, or by kneading it into plastic, dissolving or dispersing it in ink, and the like.

[0020]

【Example】

Embodiment 1 FIG. 1 is an inkjet head 1 showing an embodiment of the present invention.
It is a schematic perspective view of 01. The ink ejection port is the recording head 1.
Recording is performed by ejecting ink downward below 03. Ink exists in the ink tank 102. Ink tank 102 when ink is exhausted
Is removed from the recording head unit 103, a new ink tank is attached, and recording is performed again. Therefore, in this embodiment, the used ink tank 102 is discarded when the ink is replaced. FIG. 2 is a sectional view of the head.

Here, the housings of the recording head portion and the ink tank portion are made of Ecostar (St. Lawrence Starch), and the ink absorber 201 of the ink tank portion is made of polyurethane resin.

Reference numeral 202 denotes a fertilizer compartment for containing fertilizer, which is 3 parts ammonium sulfate, 3 parts lime superphosphate, 2 parts potassium chloride,
A mixed fertilizer containing 2 parts of magnesia lime (weight ratio) is enclosed.

Embodiment 2 FIG. 3 shows an apparatus for refilling an ink jet recording head with ink. Reference numeral 301 is an ink, and 302 is a fertilizer chamber.

Refill device is Biopol (Zeneca)
Is formed by. The same fertilizer as in Example 1 is enclosed.

Embodiment 3 FIG. 4 shows a felt-tip pen which is one of the embodiments of the present invention.
Reference numeral 401 denotes a pen body, the sectional structure of which is omitted. Reference numeral 402 denotes a cap portion whose sectional structure is illustrated. Both the pen body and the cap are made of bio-pol. Reference numeral 403 denotes a fertilizer compartment, in which the same fertilizer as in Example 1 is enclosed.

[0026]

According to the present invention, a disposable recording material such as a recording head, an ink tank, a writing instrument, and a refilling instrument is used, and then these are formed of biodegradable plastic after landfill disposal, and are used as fertilizers. Since plants are added internally, plants can grow well, fertilization and other treatments are unnecessary, and efficient landfill treatment can be performed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an inkjet head showing an embodiment of the present invention.

FIG. 2 is a sectional view of a head.

FIG. 3 is a device for refilling an inkjet recording head with ink.

FIG. 4 is a felt-tip pen which is one of the embodiments of the present invention.

[Explanation of symbols]

 101 inkjet head 102 ink tank section 103 recording head section 201 absorber 202 fertilizer chamber 203 tank side filter 204 atmosphere communication hole 205 O-ring 206 valve 207 head side filter 208 liquid chamber 209 nozzle 210 heater board 301 ink 302 fertilizer chamber 401 pen body 402 Cap 403 Fertilizer chamber

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shoji Shiba 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yoichi Tanetani 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Mariko Suzuki 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (7)

[Claims] 1. A disposable recording material having an ink, a portion for storing the ink, and a portion for recording the ink, having a portion made of biodegradable plastic, and containing nitrogen, phosphorus and potassium as main components. Disposable recording material characterized by having a fertilizer component of 2. A disposable recording article, wherein the fertilizer component according to claim 1 contains calcium, magnesium, and sulfur in addition to the main components. 3. A fertilizer chamber is formed in a portion composed of the biodegradable plastic according to claim 1, and a fertilizer mainly containing nitrogen, phosphorus and potassium is contained in the fertilizer chamber. The disposable recording article according to claim 1. 4. The disposable recording article according to claim 2, wherein calcium, magnesium, and sulfur are contained in addition to the main components in the fertilizer compartment according to claim 3. 5. The ink storage part of the biodegradable plastic part according to claim 1 is a replacement part when the ink is used up, and nitrogen, phosphorus, and potassium are contained in the replacement part. The disposable recording article according to claim 1 or 3, wherein a fertilizer as a main component is contained. 6. The disposable recording article according to claim 2, wherein the fertilizer in the replacement part according to claim 5 contains calcium, magnesium and sulfur in addition to the main components. 7. The disposable recording article according to any one of claims 1 to 6 is a recording device, a writing instrument, a refill instrument,
A disposable recording product consisting of an inkjet head.