JPH04179967A - Toner - Google Patents

Toner

Info

Publication number
JPH04179967A
JPH04179967A JP2307034A JP30703490A JPH04179967A JP H04179967 A JPH04179967 A JP H04179967A JP 2307034 A JP2307034 A JP 2307034A JP 30703490 A JP30703490 A JP 30703490A JP H04179967 A JPH04179967 A JP H04179967A
Authority
JP
Japan
Prior art keywords
toner
resin
biodegradable
binder resin
copolymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2307034A
Other languages
Japanese (ja)
Inventor
Yoshinobu Jo
城 嘉宣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP2307034A priority Critical patent/JPH04179967A/en
Publication of JPH04179967A publication Critical patent/JPH04179967A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00Developers
    • G03G9/08Developers with toner particles
    • G03G9/087Binders for toner particles
    • G03G9/08784Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
    • G03G9/08791Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775 characterised by the presence of specified groups or side chains

Abstract

PURPOSE:To obtain a biodegradable toner not polluting the global environment by using as a binder a biodegradable binder resin. CONSTITUTION:The toner contains the colorant and as the binder the biodegradable resin which means the resin undergoes cleavage of its main polymer chain by action of microorganisms or enzymes and successive degradations finally involved into ecologic carbon cycles. The toner containing this resin can be biodegrded by using a biodgradable colorant and such other additives, thus permitting the toner to form high image-quality without polluting any global environment by using the biodegradable resin and other additives even when the waste toner produced by cleaning is discarded.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は電子写真、静電記録、静電印刷、磁気記録の如
き画像形成方法における潜像を現像するためのトナーに
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a toner for developing latent images in image forming methods such as electrophotography, electrostatic recording, electrostatic printing, and magnetic recording.

[従来の技術] 一般に、電子写真等の乾式現像方式においては、帯電し
た粉末状の静電荷像現像用トナーが電気的引力により感
光体上に静電潜像に付着し、次いで用紙上に転写され、
熱ロールなどにより定着される。一方、転写の際に残っ
た感光体上の転写残トナーはクリーニングブレード等の
クリーニング機構で集められ、廃トナー容器に送られる
。こうして集められた廃トナーは、産業廃棄物として焼
却されるか、あるいは埋めたてられる。
[Prior Art] Generally, in a dry developing method such as electrophotography, a charged powder toner for developing an electrostatic image is attached to an electrostatic latent image on a photoreceptor by electric attraction, and then transferred onto paper. is,
It is fixed using a heat roll or the like. On the other hand, transfer residual toner remaining on the photoreceptor during transfer is collected by a cleaning mechanism such as a cleaning blade and sent to a waste toner container. The waste toner thus collected is either incinerated as industrial waste or buried.

焼却される場合トナーは常に粉塵爆発の可能性があり、
安全上問題がある。また、埋めたてられた場合、難分解
性のため、生態系のバランスをくずし地球環境を汚染し
てしまうという問題がある。地球環境保護が重要視され
る時代において、近年、分解性樹脂の研究が盛んになっ
ている。こうした中のひとつとして、光分解性樹脂があ
るが樹脂そのものの安定性、トナー化した時トナーとし
ての安定性に問題がある。
When incinerated, toner always has the potential for a dust explosion;
There is a safety issue. Additionally, if buried, it is difficult to decompose, which causes the problem of disrupting the balance of the ecosystem and polluting the global environment. In an era where protection of the global environment is emphasized, research on degradable resins has become active in recent years. One of these is a photodegradable resin, but there are problems with the stability of the resin itself and the stability of the toner when it is made into a toner.

[発明が解決しようとするIIIN] 本発明の目的は上述のごとき問題点を解決し、トナーに
生分解性を持たせ、地球環境を汚染しないトナーを提供
するものである。
[IIIN to be Solved by the Invention] An object of the present invention is to solve the above-mentioned problems and provide a toner that is biodegradable and does not pollute the global environment.

[課題を解決するための手段及び作用]すなわち本発明
は、少なくとも結着樹脂及び着色剤を含有するトナーに
おいて、結着樹脂として少なくとも生分解性結着樹脂を
含有することを特徴とするトナーに関する。
[Means and effects for solving the problems] That is, the present invention relates to a toner containing at least a binder resin and a colorant, which is characterized in that it contains at least a biodegradable binder resin as the binder resin. .

本発明において生分解性結着樹脂とは、微生物や酵素な
どにより、高分子主鎖が切断され、分解が進行し、生態
系の炭素サイクルに組み込まれる樹脂をいう。例えば、
リパーゼ、アミラーゼ、セルラーゼ、プロテアーゼなど
の酵素によって分解される、公知の化学的合成法によっ
て製造された脂肪族ポリエステル、脂肪族ポリエステル
と芳香族ポリエステルの共重合体、脂肪族ポリエステル
とポリアミドとの共重合体などがある。さらに、エチレ
ンとアクリル酸の共重合体にデンプンを混合したものや
エチレン/アクリル酸共重合体にゼラチン化デンプンを
添加したもの等がある。
In the present invention, the biodegradable binder resin refers to a resin whose polymer main chain is cleaved by microorganisms, enzymes, etc., decomposition progresses, and is incorporated into the carbon cycle of the ecosystem. for example,
Aliphatic polyesters produced by known chemical synthesis methods, copolymers of aliphatic polyesters and aromatic polyesters, and copolymers of aliphatic polyesters and polyamides, which are decomposed by enzymes such as lipase, amylase, cellulase, and protease. There is such a thing as merging. Furthermore, there are those in which starch is mixed with a copolymer of ethylene and acrylic acid, and those in which gelatinized starch is added to an ethylene/acrylic acid copolymer.

好ましくは、土の中に住むシュードモナス・レモイゲネ
(Pseudomonas lemoignei)や汚
泥に住むアリ力すゲネス・ファエカリス(Alcali
genesfaecalis)などの微生物によって分
解される、生分解性ポリエステル樹脂がある。
Preferably, Pseudomonas lemoignei, which lives in the soil, and Pseudomonas faecalis, which lives in sludge.
There are biodegradable polyester resins that are degraded by microorganisms such as P. genus faecalis.

′具体的には、プロピオン酸、吉草酸、酪酸、4−ヒド
ロキシ酪酸、1,4−ブタンジオール、γブチロラクト
ンなどの有機酸を炭素源に、水素細菌、窒素固定菌、枯
草菌、メタノール資化菌、土壌菌、光合成菌などの微生
物を用い発酵合成して得られた3−ヒドロキシブチレー
トなどのポリエステル、3−ヒドロキシブチレートと3
−ヒドロキシバリレートのランダム共重合ポリエステル
、3−ヒドロキシブチレートと4−ヒドロキシブチレー
トのランダム共重合体ポリエステルなどがある。
'Specifically, organic acids such as propionic acid, valeric acid, butyric acid, 4-hydroxybutyric acid, 1,4-butanediol, and γ-butyrolactone are used as carbon sources to produce hydrogen bacteria, nitrogen-fixing bacteria, Bacillus subtilis, and methanol assimilation. Polyesters such as 3-hydroxybutyrate obtained by fermentation synthesis using microorganisms such as bacteria, soil bacteria, and photosynthetic bacteria; 3-hydroxybutyrate and 3-hydroxybutyrate;
-Random copolymer polyester of hydroxyvalerate, random copolymer polyester of 3-hydroxybutyrate and 4-hydroxybutyrate, and the like.

3−ヒドロキシブチレート/4−ヒドロキシブチレート
共重合体は、水素細菌に4−ヒドロキシ酪酸を与え、発
酵装置中で発酵合成することができる。
The 3-hydroxybutyrate/4-hydroxybutyrate copolymer can be fermented and synthesized in a fermenter by providing 4-hydroxybutyrate to hydrogen bacteria.

さらに、炭素源組成を変更することにより、3−ヒドロ
キシブチレート/4−ヒドロキシブチレートの3−ヒド
ロキシブチレート分率(3−HB分率)mo12%が調
整でき、3−HB分率の増加で結晶性が向上し、融点・
降伏応力等の物性を広い範囲で選択することができる。
Furthermore, by changing the carbon source composition, the 3-hydroxybutyrate fraction (3-HB fraction) mo12% of 3-hydroxybutyrate/4-hydroxybutyrate can be adjusted, increasing the 3-HB fraction. The crystallinity improves and the melting point
Physical properties such as yield stress can be selected from a wide range.

さらに、菌体内に蓄えられた3−ヒドロキシブチレート
/4−ヒドロキシブチレート共重合体微粒子は酵素や次
亜塩素酸で処理することによって取り出すことができる
。また、クロロホルム抽出法によっても、微生物体内で
高純度で取り出すことができる。
Furthermore, the 3-hydroxybutyrate/4-hydroxybutyrate copolymer fine particles stored within the bacterial cells can be removed by treatment with enzymes or hypochlorous acid. Furthermore, it can also be extracted with high purity from the microorganism body by the chloroform extraction method.

本発明の生分解性結着樹脂を含有したトナーは、土中の
微生物や酵素によって高分子主鎖が選択的に切断され、
トナーとしても分解性を有する。
In the toner containing the biodegradable binder resin of the present invention, the polymer main chain is selectively cleaved by microorganisms and enzymes in the soil.
It is also degradable as a toner.

本発明において、結着樹脂として生分解性結着樹脂とと
もに、下記のような樹脂の混合使用が可能である。
In the present invention, the following resins can be used in combination with the biodegradable binder resin as the binder resin.

例えば、ポリスチレン、ポリ−p−クロルスチレン、ポ
リビニルトルエンなどのスチレン及びその置換体の単重
合体;スチレン−p−クロルスチレン共重合体、スチレ
ン−ビニルトルエン共重合体、スチレン−ビニルナフタ
リン共重合体、スチレン−アクリル酸エステル共重合体
、スチレン−メタクリル酸エステル共重合体、スチレン
−α−クロルメタクリル酸メチル共重合体、スチレン−
アクリロニトリル共重合体、スチレン−ビニルメチルエ
ーテル共重合体、スチレン−ビニルエチルエーテル共重
合体、スチレン−ビニルメチルケトン共重合体、スチレ
ン−ブタジェン共重合体、スチレン−イソプレン共重合
体、スチレン−アクリロニトリル−インデン共重合体の
如きスチレン系共重合体;ポリ塩化ビニル、フェノール
樹脂、天然変性フェノール樹脂、天然樹脂変性マレイン
酸樹脂、アクリル樹脂、メタクリル樹脂、ポリ酢酸ビニ
ール、シリコーン樹脂、ポリエステル樹脂、ポリウレタ
ン、ポリアミド樹脂、フラン樹脂、エポキシ樹脂、キシ
レン樹脂、ポリビニルブチラール、テルペン樹脂、クマ
ロンインデン樹脂、石油系樹脂が使用できる。
For example, monopolymers of styrene and its substituted products such as polystyrene, poly-p-chlorostyrene, and polyvinyltoluene; styrene-p-chlorostyrene copolymers, styrene-vinyltoluene copolymers, styrene-vinylnaphthalene copolymers , styrene-acrylic acid ester copolymer, styrene-methacrylic acid ester copolymer, styrene-α-methyl chloromethacrylate copolymer, styrene-
Acrylonitrile copolymer, styrene-vinyl methyl ether copolymer, styrene-vinyl ethyl ether copolymer, styrene-vinyl methyl ketone copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer, styrene-acrylonitrile- Styrenic copolymers such as indene copolymers; polyvinyl chloride, phenolic resin, naturally modified phenolic resin, natural resin-modified maleic acid resin, acrylic resin, methacrylic resin, polyvinyl acetate, silicone resin, polyester resin, polyurethane, polyamide Resin, furan resin, epoxy resin, xylene resin, polyvinyl butyral, terpene resin, coumaron indene resin, and petroleum-based resin can be used.

これらの樹脂の混合割合は、結着樹脂全体に対し50%
以下であることが好ましい。80%を越えるとトナーの
生分解性が発揮できず好ましくない。
The mixing ratio of these resins is 50% of the total binder resin.
It is preferable that it is below. If it exceeds 80%, the biodegradability of the toner cannot be exhibited, which is not preferable.

特に、加圧定着方式を用いる場合には、圧力定着現像剤
用結着樹脂の使用が可能であり、例えばポリエチレン、
ポリプロピレン、ポリメチレン、ポリウレタンエラスト
マー、エチレン−エチルアクリレート共重合体、エチレ
ン−酢酸ビニル共重合体、アイオノマー樹脂、スチレン
−ブタジェン共重合体、スチレン−イソプレン共重合体
、線状飽和ポリエステル、パラフィンがある。
In particular, when using a pressure fixing method, it is possible to use a binder resin for pressure fixing developers, such as polyethylene,
Examples include polypropylene, polymethylene, polyurethane elastomer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer, ionomer resin, styrene-butadiene copolymer, styrene-isoprene copolymer, linear saturated polyester, and paraffin.

本発明のトナーには荷電制御剤をトナー粒子に配合(内
添)、またはトナー粒子と混合(外添)して用いること
が好ましい。荷電制御剤によって、現像システムに応じ
た最適の荷電量コントロールが可能となる。正荷電制御
剤としては、ニグロシン及び脂肪酸金属塩等による変成
物;トリブチルベンジルアンモニウム−1−ヒドロキシ
−4−ナフトスルフォン酸塩、テトラブチルアンモニウ
ムテトラフルオロボレートの如き四級アンモニウム塩;
ジブチルスズオキサイド、ジオクチルスズオキサイド、
ジシクロへキシルスズオキサイドの如きジオルガノスズ
オキサイド;ジブチルスズボレート、ジオクチルスズボ
レート、ジシクロへキシルスズボレートの如きジオルガ
ノスズボレートを単独であるいは2種類以上組合せて用
いることができる。これらの中でも、ニグロシン系、四
級アンモニウム塩の如き荷電制御剤が特に好ましく用い
られる。
In the toner of the present invention, it is preferable to use a charge control agent by blending it into the toner particles (internally adding it) or mixing it with the toner particles (externally adding it). The charge control agent makes it possible to optimally control the amount of charge depending on the developing system. Examples of positive charge control agents include modified products of nigrosine and fatty acid metal salts; quaternary ammonium salts such as tributylbenzylammonium-1-hydroxy-4-naphthosulfonate and tetrabutylammonium tetrafluoroborate;
dibutyltin oxide, dioctyltin oxide,
Diorganotin oxides such as dicyclohexyltin oxide; diorganotin borates such as dibutyltin borate, dioctyltin borate, and dicyclohexyltin borate can be used alone or in combination of two or more. Among these, charge control agents such as nigrosine and quaternary ammonium salts are particularly preferably used.

一般式 %式% R2,R,:置換または未置換のアルキル基(好ましく
は、01〜C4)] で表わされるモノマーの単重合体:前述したスチレン、
アクリル酸エステル、メタクリル酸エステルの如き重合
性モノマーとの共重合体を正荷電性制御剤として用いる
ことができる。この場合これらの荷電制御剤は、結着樹
脂(の全部または一部)としての作用をも有する。
General formula % formula % R2,R,: substituted or unsubstituted alkyl group (preferably 01 to C4)] Homopolymer of monomers: the above-mentioned styrene,
Copolymers with polymerizable monomers such as acrylic esters and methacrylic esters can be used as positive charge control agents. In this case, these charge control agents also function as (all or part of) a binder resin.

本発明に用いることのできる負荷電性制御剤としては、
例えば有機金属錯体、キレート化合物が有効である。そ
の例としてはアルミニウムアセチルアセトナート、鉄(
n)アセチルアセトナート、3,5−ジターシャリ−ブ
チルサリチル酸クロムがあり、特にアセチルアセトン金
属錯体、サリチル酸系金属錯体または塩が好ましく、特
にサリチル酸系金属錯体またはサリチル酸系金属塩が好
ましい。
Negative charge control agents that can be used in the present invention include:
For example, organometallic complexes and chelate compounds are effective. Examples include aluminum acetylacetonate, iron (
n) Acetylacetonate, chromium 3,5-ditertiary-butylsalicylate, and acetylacetone metal complexes, salicylic acid metal complexes or salts are particularly preferred, and salicylic acid metal complexes or salicylic acid metal salts are particularly preferred.

上述した荷電制御剤(結着樹脂としての作用を有しない
もの)は、微粒子状として用いることが好ましい。この
場合、この荷電制御剤の個数平均粒径は、具体的には、
4μm以下(更には3μm以下)が好ましい。
The above-mentioned charge control agent (one that does not function as a binder resin) is preferably used in the form of fine particles. In this case, the number average particle size of this charge control agent is specifically:
The thickness is preferably 4 μm or less (more preferably 3 μm or less).

トナーに内添する際、このような荷電制御剤は、結着樹
脂100重量部に対して0.1〜20重量部(更には0
.2〜10重量部)用いることが好ましい。
When internally added to the toner, such a charge control agent is added in an amount of 0.1 to 20 parts by weight (or even 0.1 to 20 parts by weight) per 100 parts by weight of the binder resin.
.. 2 to 10 parts by weight) is preferably used.

本発明のトナーは、必要に応じて種々の添加剤を内添あ
るいは外添混合しても良い。
Various additives may be added internally or externally to the toner of the present invention, if necessary.

着色剤としては従来より知られている染料及び顔料が使
用可能であり、通常、結着樹脂100重量部に対して0
.5〜20重量部使用しても良い。他の添加剤としては
、例えばステアリン酸亜鉛の如き滑剤;酸化セリウム、
炭化ケイ素、チタン酸ストロンチウムの如き研磨剤;樹
脂微粒子;酸化アルミニウムの如き流動性付与剤、ケー
キング防止剤;カーボンブラック、酸化スズの如き導電
性付与剤がある。
As the colorant, conventionally known dyes and pigments can be used, and usually 0 parts by weight per 100 parts by weight of the binder resin.
.. 5 to 20 parts by weight may be used. Other additives include lubricants such as zinc stearate; cerium oxide,
Examples include abrasives such as silicon carbide and strontium titanate; fine resin particles; fluidity imparting agents and anti-caking agents such as aluminum oxide; and conductivity imparting agents such as carbon black and tin oxide.

熱ロール定着時の離型性を良くする目的で低分子量ポリ
エチレン、低分子量ポリプロピレン、マイクロクリスタ
リンワックス、カルナバワックス、サゾールワックス、
パラフィンワックスの如きワックス状物質を0.5〜5
wt%程度トナー中に加えることも本発明の好ましい形
態の1つである。
Low molecular weight polyethylene, low molecular weight polypropylene, microcrystalline wax, carnauba wax, Sasol wax,
0.5-5% waxy substance such as paraffin wax
It is also one of the preferred embodiments of the present invention to add about wt% to the toner.

さらに、本発明中のトナーは、着色剤の役割を兼ねても
良いが、磁性材料を含有しても良く、磁性材料としては
、マグネタイト、γ−酸化鉄、フェライト、鉄過剰型フ
ェライトの如き酸化鉄;鉄、コバルト、ニッケルのよう
な金属或はこれらの金属とアルミニウム、コバルト、銅
、鉛、マグネシウム、スズ、亜鉛、アンチモン、ベリリ
ウム、ビスマス、カドミウム、カルシウム、マンガン、
セレン、チタン、タングステン、バナジウムのような金
属との合金およびその組成物が挙げられる。
Further, the toner in the present invention may also serve as a colorant, and may also contain a magnetic material. Iron; metals such as iron, cobalt, nickel or these metals together with aluminum, cobalt, copper, lead, magnesium, tin, zinc, antimony, beryllium, bismuth, cadmium, calcium, manganese,
Mention may be made of alloys and compositions thereof with metals such as selenium, titanium, tungsten, and vanadium.

これらの磁性体は平均粒径が0.1〜1μm。These magnetic substances have an average particle size of 0.1 to 1 μm.

好ましくは0.1〜0.5μm程度のものが好ましい。Preferably, the thickness is about 0.1 to 0.5 μm.

トナー中に含有させる量としては結着樹脂100重量部
に対し30〜120重量部、好ましくは結着樹脂100
重量部に対し40〜110重量部である。
The amount to be contained in the toner is 30 to 120 parts by weight per 100 parts by weight of the binder resin, preferably 100 parts by weight of the binder resin.
It is 40 to 110 parts by weight.

本発明のトナーの作製は、生分解性結着樹脂、必要に応
じて、公知の他の結着樹脂、磁性粉、着色剤としての顔
料または染料、荷電制御剤、その他の添加剤をボールミ
ルの如き混合機により充分混合してから加熱ロール、ニ
ーダ−、エクストルーダーの如き熱混練機を用いて溶融
、混練して樹脂類を互いに相溶せしめた中に、磁性粉、
着色剤、荷電制御剤、その他の添加剤を分散又は溶解せ
しめ、冷却固化後粉砕及び分級をおこなった後、必要に
応じて、シリカ微粒子及びその他の外添剤を乾式混合方
法によって、外添混合され本発明に係るところのトナー
を得ることが出来る。
The toner of the present invention is produced by adding a biodegradable binder resin, other known binder resins, magnetic powder, pigments or dyes as colorants, charge control agents, and other additives in a ball mill. Magnetic powder,
Colorants, charge control agents, and other additives are dispersed or dissolved, cooled and solidified, and then pulverized and classified. If necessary, fine silica particles and other external additives are externally mixed using a dry mixing method. Thus, the toner according to the present invention can be obtained.

[実施例コ ±   との 1′告 11 培養された水素細菌1kgおよび炭素源としての4−ヒ
ドロキシ酪酸500gをステンレス製のラボ発酵合成装
置に投入し、28℃(温度)60%(湿度)の条件下で
72時間かけ発酵合成し、目的の3−ヒドロキシブチレ
ート/4−ヒドロキシブチレート共重合体を次亜塩素酸
処理により得た。
[1' Notice with Example Code 11 1 kg of cultured hydrogen bacteria and 500 g of 4-hydroxybutyric acid as a carbon source were put into a stainless steel laboratory fermentation synthesis apparatus, and the mixture was heated at 28°C (temperature) and 60% (humidity). Fermentation synthesis was carried out for 72 hours under these conditions, and the desired 3-hydroxybutyrate/4-hydroxybutyrate copolymer was obtained by treatment with hypochlorous acid.

3−ヒドロキシブチレート/4−ヒドロキシブチレート
共重合体のフィルム(厚さ70LLm)は土の中(20
〜25℃)で6週間という短期間でほぼ完全に分解され
た。活性汚泥中(30℃)の中では、2週間程度で跡形
もなく分解した。
A film of 3-hydroxybutyrate/4-hydroxybutyrate copolymer (thickness: 70 LLm) was deposited in the soil (20 LLm).
It was almost completely decomposed in a short period of 6 weeks at ~25°C). In activated sludge (30°C), it decomposed in about two weeks without leaving a trace.

実施例1 重量部 1生分解性結着樹脂         100部上記材
料をブレンダーでよ(混合した後、110℃に設定した
2軸混練押出機にて溶融混練した。得られた混線物を冷
却し、カッターミルにて粗粉砕した後、ジェット気流を
用いた微粉砕機を用いて微粉砕し、得られた微粉砕粉を
固定壁型風力分級機で分級して分級粉を生成した。さら
に、得られた分級粉をコアンダ効果を利用した多分割分
級装置(8鉄工業社製エルボジェット分級機)で分級し
、体積平均12μmの黒色微粉体Aを得た。
Example 1 Parts by weight 1 Biodegradable binder resin 100 parts The above materials were mixed in a blender (after mixing, they were melt-kneaded in a twin-screw kneading extruder set at 110°C. The obtained mixed wire material was cooled, After coarsely pulverizing with a cutter mill, finely pulverizing using a pulverizer using a jet stream, the resulting finely pulverized powder was classified using a fixed wall type wind classifier to produce a classified powder. The resulting classified powder was classified using a multi-division classifier using the Coanda effect (Elbowjet classifier manufactured by 8 Tetsu Kogyo Co., Ltd.) to obtain black fine powder A with a volume average of 12 μm.

さらに、 重量部 上記物質をヘンシェルミキサーで混合し、−成分磁性ト
ナーAを得た。
Furthermore, parts by weight of the above substances were mixed in a Henschel mixer to obtain -component magnetic toner A.

得られたトナーの初期画像をキャノン社製NP−665
0で評価したところ、画質は良好で濃度ムラ、カブリの
ない高品位な画像が得られ1万枚コピー後も維持された
The initial image of the obtained toner was transferred to Canon NP-665.
When evaluated at 0, the image quality was good, with high-quality images without density unevenness or fogging, which were maintained even after copying 10,000 copies.

さらにトナーAに150℃熱を加えプレスしフィルム状
にしたものは土の中(20〜25℃)で8週間という短
期間でほぼ完全に分解された。
Furthermore, Toner A heated to 150° C. and pressed into a film was almost completely decomposed in soil (20 to 25° C.) in a short period of 8 weeks.

以上結果を表1に示す。The above results are shown in Table 1.

実施例2 生分解性結着樹脂の配合比を50重量部とし、スチレン
−アクリル樹脂を・50重量部加える以外は、実施例1
と同様にトナーを作成しトナーBを得て評価を行った。
Example 2 Example 1 except that the blending ratio of biodegradable binder resin was 50 parts by weight and 50 parts by weight of styrene-acrylic resin was added.
A toner was prepared in the same manner as above, and Toner B was obtained and evaluated.

結果を表1に示す。The results are shown in Table 1.

比較例1 生分解性結着樹脂の代わりにスチレン−アクリル樹脂を
100重量部とした以外は、実施例1゛と同様にトナー
Cを製造し、評価を行った。
Comparative Example 1 Toner C was produced and evaluated in the same manner as in Example 1, except that 100 parts by weight of styrene-acrylic resin was used instead of the biodegradable binder resin.

初期、1万枚耐久後の画像性能は良好であるが、本トナ
ーを150℃に加熱プレスし、フィルム状に加工したも
のを土の中(20〜25℃)で30週間放置してもほと
んど分解していなかった。
Initially, the image performance after 10,000 sheets is good, but even if this toner is heat-pressed at 150℃ and processed into a film and left in soil (20-25℃) for 30 weeks, there is almost no image performance. It had not been disassembled.

結果を表1に示す。The results are shown in Table 1.

実施例3 重量部 を実施例1と同様の製法で製造し、体積平均粒径12μ
mの黒色微粉体Bを得た。さらに、重量部 をV型混合機で混合しトナーDを得た。トナーDを二成
分現像用に改良したNP−6650で評価を行ったとこ
ろ、初期及び1万枚耐久後も良好な性能を得た。
Example 3 Part by weight was manufactured using the same method as in Example 1, and the volume average particle size was 12μ.
A black fine powder B of m was obtained. Further, parts by weight were mixed using a V-type mixer to obtain toner D. When NP-6650, which is an improved version of Toner D for two-component development, was evaluated, good performance was obtained both at the initial stage and after running for 10,000 sheets.

本例の黒色微粉体Bを150℃に加熱、プレスしフィル
ム状に加工したものは土の中(20〜25℃)6週間で
ほぼ完全に分解した。
The black fine powder B of this example was heated to 150°C, pressed, and processed into a film, which was almost completely decomposed in soil (20-25°C) within 6 weeks.

以上の結果を表1に示す。The above results are shown in Table 1.

比較例2 生分解性結着樹脂の代わりに化学的に合成されたポリエ
ステル樹脂を100重量部とした以外は実施例3と同様
に製造し、体積平均径12μmの黒色微粉体Cを得た。
Comparative Example 2 A black fine powder C having a volume average diameter of 12 μm was obtained in the same manner as in Example 3 except that 100 parts by weight of a chemically synthesized polyester resin was used instead of the biodegradable binder resin.

さらに 重量部 を実施例3と同様な方法で混合し、トナーEを得て実施
例1と同様に評価を行った。
Furthermore, parts by weight were mixed in the same manner as in Example 3 to obtain Toner E, which was evaluated in the same manner as in Example 1.

結果を表1に示した。The results are shown in Table 1.

第1表 [発明の効果] 本発明の生分解性結着樹脂を含有するトナーによれば、
トナーとして良好な画質を有すると同時にクリーニング
残の廃トナーを廃棄しても生分解して生態系の炭素サイ
クルに組み込まれる。これにより地球環境を汚染しない
トナーが可能となった。
Table 1 [Effects of the Invention] According to the toner containing the biodegradable binder resin of the present invention,
It has good image quality as a toner, and at the same time, even if the waste toner left after cleaning is disposed of, it biodegrades and is incorporated into the carbon cycle of the ecosystem. This has made it possible to create toner that does not pollute the global environment.

Claims (1)

【特許請求の範囲】[Claims] (1)少なくとも結着樹脂及び着色剤を含有するトナー
において、結着樹脂として少なくとも生分解性結着樹脂
を含有することを特徴とするトナー。
(1) A toner containing at least a binder resin and a colorant, characterized in that it contains at least a biodegradable binder resin as the binder resin.
JP2307034A 1990-11-15 1990-11-15 Toner Pending JPH04179967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2307034A JPH04179967A (en) 1990-11-15 1990-11-15 Toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2307034A JPH04179967A (en) 1990-11-15 1990-11-15 Toner

Publications (1)

Publication Number Publication Date
JPH04179967A true JPH04179967A (en) 1992-06-26

Family

ID=17964244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2307034A Pending JPH04179967A (en) 1990-11-15 1990-11-15 Toner

Country Status (1)

Country Link
JP (1) JPH04179967A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613790A1 (en) * 1993-02-16 1994-09-07 Canon Kabushiki Kaisha Recording medium, ink-jet recording method using the same, and ink-jet recorded article
JPH06289644A (en) * 1993-04-05 1994-10-18 Tomoegawa Paper Co Ltd Electrophotographic toner
US5387665A (en) * 1993-02-26 1995-02-07 Mitsui Toatsu Chemicals, Inc. Resins for electrohotographic toners
WO2004041905A1 (en) * 2002-10-24 2004-05-21 Canon Kabushiki Kaisha New polyhydroxyalkanoate copolymer, resin composition, molded product, toner, image forming method and image forming apparatus
KR100486475B1 (en) * 2002-02-15 2005-05-03 캐논 가부시끼가이샤 Novel polyhydroxyalkanoate having amide group and sulfonic group, method of producing the same, charge controlling agent containing novel polyhydroxyalkanoate, toner binder, toner, and image formation method and image forming apparatus using the toner
JP2011043529A (en) * 2009-08-19 2011-03-03 Casio Electronics Co Ltd Developing method and image forming apparatus using two-component developer
US9152067B2 (en) 2012-07-23 2015-10-06 Ricoh Company, Ltd. Toner, development agent, and image forming apparatus
US9557666B2 (en) 2010-11-18 2017-01-31 Ricoh Company, Ltd. Toner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613790A1 (en) * 1993-02-16 1994-09-07 Canon Kabushiki Kaisha Recording medium, ink-jet recording method using the same, and ink-jet recorded article
US5526031A (en) * 1993-02-16 1996-06-11 Canon Kabushiki Kaisha Recording medium, ink-jet recording method using the same, and ink-jet recorded article
US5387665A (en) * 1993-02-26 1995-02-07 Mitsui Toatsu Chemicals, Inc. Resins for electrohotographic toners
JPH06289644A (en) * 1993-04-05 1994-10-18 Tomoegawa Paper Co Ltd Electrophotographic toner
KR100486475B1 (en) * 2002-02-15 2005-05-03 캐논 가부시끼가이샤 Novel polyhydroxyalkanoate having amide group and sulfonic group, method of producing the same, charge controlling agent containing novel polyhydroxyalkanoate, toner binder, toner, and image formation method and image forming apparatus using the toner
WO2004041905A1 (en) * 2002-10-24 2004-05-21 Canon Kabushiki Kaisha New polyhydroxyalkanoate copolymer, resin composition, molded product, toner, image forming method and image forming apparatus
JP2011043529A (en) * 2009-08-19 2011-03-03 Casio Electronics Co Ltd Developing method and image forming apparatus using two-component developer
US9557666B2 (en) 2010-11-18 2017-01-31 Ricoh Company, Ltd. Toner
US9152067B2 (en) 2012-07-23 2015-10-06 Ricoh Company, Ltd. Toner, development agent, and image forming apparatus

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