JPS62205367A - Flash fixing toner - Google Patents
Flash fixing tonerInfo
- Publication number
- JPS62205367A JPS62205367A JP61049035A JP4903586A JPS62205367A JP S62205367 A JPS62205367 A JP S62205367A JP 61049035 A JP61049035 A JP 61049035A JP 4903586 A JP4903586 A JP 4903586A JP S62205367 A JPS62205367 A JP S62205367A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- toner
- molecular weight
- mol
- filming
- 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
Links
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000000975 dye Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000002775 capsule Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 235000007575 Calluna vulgaris Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Landscapes
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
原画像の記録あるいは印刷原稿の複写をなす所謂、転写
形電子写真装置に用いる熱可塑性樹脂基材としての像形
成トナーを対象とし、トナー現像と転写、該転写後の特
にレーザ光照射によるフラッシュ定着、に際してトナー
フィルミング耐性を高め、プリンタの高性能化を図るた
めのトナー組成と、その製造方法について提示されたも
のである。[Detailed Description of the Invention] [Summary] This invention targets image-forming toner as a thermoplastic resin base material used in so-called transfer-type electrophotographic devices that record original images or copy printed manuscripts, and is used for toner development, transfer, and other purposes. This paper presents a toner composition and a method for producing the toner composition for increasing the toner filming resistance especially during flash fixing by laser beam irradiation after transfer and improving the performance of the printer.
本発明は、光、電子などの照射による原画像の記録等を
行う熱可塑性樹脂を基材とするフラッシュ定着用トナー
に関する。The present invention relates to a toner for flash fixing that uses a thermoplastic resin as a base material and records an original image by irradiation with light, electrons, or the like.
従来、電子写真法としては米国特許第２２９７６１号に
記載された方式が周知であるが、これは一般的には光導
電性絶縁体（フォトコンドラム）を利用し、該ドラム上
にコロナ放電等により一様な静電荷を与え１種々の手段
によりドラムの絶縁体層に光像を照射することによって
電気的潜像を形成し。Conventionally, as an electrophotographic method, the method described in US Pat. An electrical latent image is formed by imparting a uniform electrostatic charge and applying a light image to the insulating layer of the drum by various means.
次いで該潜像をトナーと呼ばれる微粉末を用いて現像可
視化し、必要に応じて紙等に１・す・−像を転写した後
、加圧、加熱、溶剤蒸気、光等による定着を行い複写物
が得られるようにしたものである。The latent image is then visualized by development using a fine powder called toner, and if necessary, the image is transferred to paper, etc., and then fixed by pressure, heat, solvent vapor, light, etc., and copied. It was made so that things could be obtained.
前記せる電気的潜像を現像する１・す・−としては。1.S.-- for developing the electrical latent image described above.
天然または合成高分子物質例えばオリゴマーと称する結
着樹脂に、カーボンブランクなどの着色剤を分散させた
ものを微粉砕し１粒径１〜３０μＴ１）のとしたものを
用いる。該１−ナーば通常、鉄粉とかガラスヒースなど
の担体物質（キャリア）と混合して、前記潜像の現像、
該現像後の転写及び定着がされる。A natural or synthetic polymer material, such as a binder resin called an oligomer, in which a coloring agent such as carbon blank is dispersed, is finely pulverized to a particle size of 1 to 30 μT1). The 1-neron is usually mixed with a carrier material such as iron powder or glass heather to develop the latent image,
Transfer and fixing are performed after the development.
本発明ば１ フラッシュ定着方式のプリンタに係り特に
、フォ１−コンドラムへのトナーフィルミングと前記キ
ャリアへのトナーフィルミングが起こり難い、従って紙
に対する画像定着性に優れたトナーを提供することを意
図する。The present invention relates to a flash fixing type printer, and is intended to provide a toner that is less likely to cause toner filming on the photocon drum and toner filming on the carrier, and therefore has excellent image fixing properties on paper. do.
〔従来の技術と発明が解決しようとする問題点〕トナー
とキャリアからなる現像剤は、−１′ヤリＩとして鉄粉
、または他の強磁ｆ１体粒子を用いる場合、現像器内の
マグネットロールによって磁気ブラシを形成し、ロール
の回転によ一１′Ｃ１す−が潜像部分に運ばれ、これが
潜像部乙こイマ１着り、て現像が行われる。[Prior art and problems to be solved by the invention] When iron powder or other ferromagnetic f1 particles are used as the -1' spear I, the developer consisting of toner and carrier is A magnetic brush is formed by the rollers, and as the roll rotates, the 1'C1 is carried to the latent image area, where it lands on the latent image area and development is performed.
し７かしなから、近時、複写速度の増大に伴い。However, recently, with the increase in copying speed.
現像器内の現像剤は高速攪拌されるようになり。The developer in the developing device is now stirred at high speed.
どれによイ）トナーとキャリアは、相を丁の摩擦・衝突
によって１ナーがキャリア面へ粘着するトナーフィルミ
ングが現れ１、これが進杓するとキャリア表面が１−ナ
ーの被膜で覆われてし２まう。このようなキャリアは、
１〜ナーとｌ（を合攪拌し７ても１？擦帯電を起こさず
現像能力を喪失する。Either way, the toner and carrier are separated by friction and collision, resulting in toner filming in which the 1-toner sticks to the carrier surface. As this progresses, the carrier surface is covered with a 1-toner film. 2 mau. This kind of career is
Even if 1 to 3 and 1 are stirred together, 1 to 7 does not cause triboelectric charging and the developing ability is lost.
また他の問題点として１通称、ドラＪ、の１−ナーフィ
ルミングと呼ばれる転写性能の低Ｆｔ、＝繋がる現象で
ある。これは次のよ）に考えられる。Another problem is a phenomenon commonly referred to as 1-ner filming, which is associated with low transfer performance (Ft). This can be considered as follows.
転写が終了のフォトコント 相当量残留し，これは続く印字に支障となる。Photo control after transfer is completed A considerable amount remains, which interferes with subsequent printing.
このため次印字に先立−ってクリーニングブラシで除去
されるが，該ブラシを形成する繊維によってトーラム表
面に叩き付けられ表面に融着する。［ラム表面の融着ト
ナーは，ドラム感度を低下させると共にプリントに残像
を生じ好ましくない。Therefore, it is removed by a cleaning brush prior to the next printing, but the fibers forming the brush strike the toram surface and fuse it to the surface. [Fused toner on the surface of the ram is undesirable because it reduces the sensitivity of the drum and causes an afterimage on the print.
そこで、従来，ワックスなどの非粘着性成分４含んだ非
粘着性Ｉ・ナーとすることも考えられるが。Therefore, conventionally, it has been considered to use a non-adhesive I-ner containing a non-adhesive component 4 such as wax.
ワックス添加量が少ないと非粘着効果に乏しく。If the amount of wax added is small, the non-stick effect will be poor.
また多いとワックスが染み出し，）第１・コンドラム及
び現像剤にワックス付着となって，印字コンＩ・ラスト
が低下し，また印字背景部のカブリなど生じて印字品質
を劣化させると云う不都合がある。In addition, if there is too much wax, the wax will ooze out and adhere to the first conductor drum and developer, resulting in a decrease in print contrast and last, and fogging of the background of the print, resulting in deterioration of print quality. be.
本発明は，例えはフラッシュにより転写像を定着する場
合，熱的に解離（溶融）しやすい低分子量の主基材樹脂
からなるトナーを形成すること。The present invention is to form a toner made of a low molecular weight main base resin that is easily thermally dissociated (melted) when a transferred image is fixed by flash, for example.
またトナー表面ば前記ドラムフィルミングなどフィルミ
ング耐性のよい非粘着性の高分子量の樹脂で被覆（カプ
セル）することで前記の問題点を解決したものである。In addition, the above-mentioned problems are solved by coating (capsulating) the surface of the toner with a non-adhesive high-molecular weight resin that has good resistance to filming such as drum filming.
低分子量の主基材樹脂としては１
数平均分子量が１０００〜４（ｔｏｏのエポキシ樹脂を
。The low molecular weight main base resin is an epoxy resin with a number average molecular weight of 1000 to 4 (too much).
また主基材樹脂を被覆するカプセル用樹脂と１，て数平
均分子−量が４５００〜ｉｏｏｏｏのエポキシ樹脂イ。Also, a capsule resin for coating the main base resin and an epoxy resin having a number average molecular weight of 4500 to ioooo.
それぞれ使用するものである。但し，被覆するカプセル
用樹脂は，予め，摩擦によるＩ− Ｊ−一帯電を付与す
る帯電制御剤を含むものである。Each is used separately. However, the coating resin for the capsule contains in advance a charge control agent that imparts an I-J-1 charge due to friction.
低分子量樹脂はトナ一定着性に優れるも耐フィルミング
性に劣る。逆に高分子量樹脂は定着性に劣るが耐フィル
ミング性に優れる。即ら，単独樹脂では定着性，及び耐
フィルミング性の要求を同時に両立させることが不可能
であること，また低分子にと高分子￥の二二つの樹脂を
混合しても問題は解決されないことから，本発明は，ト
ナー現像転写王程までシＪ゛高分子量樹脂のトナー特性
となり。Low molecular weight resins have excellent toner adhesion properties but are inferior in filming resistance. Conversely, high molecular weight resins have poor fixing properties but excellent filming resistance. In other words, it is impossible to simultaneously satisfy the requirements for fixing properties and anti-filming properties with a single resin, and the problem cannot be solved even by mixing two resins, low-molecular and high-molecular resins. Therefore, in the present invention, the toner properties of high molecular weight resins are maintained up to the level of toner development and transfer.
転写後の定着工程では定着し・やすい低分子量の樹脂１
）性となすカプセル化樹脂としたものである。Low molecular weight resin 1 that is easy to fix in the fixing process after transfer
) The encapsulation resin is made with
以下２図面に従って本発明トナー樹脂の組成を説明する
。The composition of the toner resin of the present invention will be explained below with reference to the two drawings.
第１図（ａｌは、主基材とする低分子量樹脂粉末の形状
、また同図（ｂ）は前記基材表面に高分子量の樹脂を被
覆したトナー樹脂の形状を示す図である。FIG. 1 (al) shows the shape of a low molecular weight resin powder used as the main base material, and FIG. 1 (b) shows the shape of a toner resin in which the surface of the base material is coated with a high molecular weight resin.
低分子量のトナー基材樹脂は第１図ｆａｔの如き球状を
なすが、このままではドラム、及びキャリア表面へのフ
ィルミングを起こし易いため同図（ｂ）に示すように高
分子量樹脂を被覆することでフィルミング耐性を高める
ものである。The low molecular weight toner base resin has a spherical shape as shown in Figure 1 (fat), but as it is, it tends to cause filming on the drum and carrier surfaces, so it is necessary to coat it with a high molecular weight resin as shown in Figure 1 (b). This increases the filming resistance.
但し、被覆する高分子量樹脂には、予め、現像器内にお
けるトナー帯電を与えるための制御剤が混入される。However, the coating high molecular weight resin is mixed in advance with a control agent for imparting charge to the toner in the developing device.
第２図は第１図（ｂ）のカプセル化トナーに対して。FIG. 2 is for the encapsulated toner of FIG. 1(b).
レーザビームによりその球状が変形して紙への定着が漸
次進行する過程を示す図である。トナーは低分子量の樹
脂が大半を占めるため定着性が良い。FIG. 3 is a diagram showing a process in which the spherical shape is deformed by a laser beam and fixing to paper gradually progresses. The toner has good fixing properties because it is mostly composed of low molecular weight resin.
次ぎに係るトナー樹脂について、具体的製造方法を述べ
る。Next, a specific manufacturing method for the toner resin will be described.
実施例■
数平均分子量３４００のエポキシ樹脂
例えばエビクロン４０５０ （大日本インク化学工業）
−一一−−−・−・・−・・・９４重量部カーボンブラ
ック、例えばブラ・ノクバールズしくキャボット社）
−−〜−−−−−−３重量部ニグロシン染料１例えば
オイルブランクＢＹ （オリエント化学） −−
−−−−−−−−−３重量部前記組成物を１００℃に加
熱してニーダにより一時間混練する。前記混練物を粗粉
砕、中粉砕した後、ジェットミルで細粉砕を行う。Example ■ Epoxy resin with a number average molecular weight of 3400, such as Ebicuron 4050 (Dainippon Ink Chemical Industry)
−11−−−・−・・−・・・94 parts by weight carbon black, e.g. Cabot Corporation)
----3 parts by weight Nigrosine dye 1 For example, oil blank BY (Orient Chemical) ---
------- 3 parts by weight The above composition is heated to 100 DEG C. and kneaded in a kneader for one hour. After the kneaded material is coarsely and medium-pulverized, it is finely pulverized using a jet mill.
前記細粉砕物を分級機により分級して１粒径５〜２０μ
ｍのトナーが得られる。The finely pulverized material is classified by a classifier to have a particle size of 5 to 20μ.
m toner is obtained.
然る後、数平均分子量８７００のエポキシ樹脂例えばエ
ビクロン９０５５を１００重量部に対して、帯電制御剤
としてのニグロシン染料を３重量部、それぞれをメチル
エチルケトン溶媒に溶かして、流動床にユースピードド
ライヤ、富士産業）を用いてスプレードライ法により前
記粒径のトナーに被覆すれば目的とするカプセル化トナ
ーが得られる。After that, 100 parts by weight of an epoxy resin having a number average molecular weight of 8,700, such as Evicron 9055, and 3 parts by weight of nigrosine dye as a charge control agent were dissolved in methyl ethyl ketone solvent, and the mixture was placed in a fluidized bed using a U-Speed dryer or a Fuji The desired encapsulated toner can be obtained by coating a toner having the above particle size with a spray drying method using a commercially available encapsulated toner.
鉄粉（ＥＦＶ２５０．日本鉄粉製）からなる磁気ブラシ
用キャリアと、前記せるカプセル化トナーとを。A magnetic brush carrier made of iron powder (EFV250, manufactured by Nippon Iron Powder) and the encapsulated toner described above.
トナー濃度５重量％の現像剤として調製し、レーザプリ
ンタ（Ｆ６７１５Ｄ、富士通製）による連続印字試験を
行った。A developer having a toner concentration of 5% by weight was prepared, and a continuous printing test was conducted using a laser printer (F6715D, manufactured by Fujitsu).
その結果、２０万シ一ト印字後でもドラムフィルミング
は観測されず、またキャリア表面におけるトナーフィル
ミングが全く無いかつ画像定着性の良いことが１）１認
された。As a result, no drum filming was observed even after printing 200,000 sheets, and it was confirmed that 1) there was no toner filming on the carrier surface and the image fixability was good.
実施例■
数平均分子量３０００のエポキシ樹脂基材５例えばエビ
クロン４０６０ （大日本インク化学工業）を用いた以
外は、全て前記実施例■と同様にして製作した被覆トナ
ーを試作した。Example (2) A coated toner was prepared in the same manner as in Example (2) except that the epoxy resin base material 5 having a number average molecular weight of 3000, for example, Evicron 4060 (Dainippon Ink Chemical Industry) was used.
前記試作トナーによる連続印字試験をしたところ、定着
性、耐フィルミング性、共に優れることが確認された。When a continuous printing test was conducted using the above-mentioned prototype toner, it was confirmed that both the fixing property and the filming resistance were excellent.
実施例■
数平均分子量３８００のエポキシ樹脂基材１例えばエピ
コー）１００９（シェル化学）以外は、全て前記実施例
■と同様にして製作したカプセル被覆トナーを試作した
６該トナーの連続印字試験結果によれば、定着性、耐フ
ィルミング性、共に優れることが確認された。Example ■ Epoxy resin base material with a number average molecular weight of 3800 1 For example, a capsule-coated toner was produced in the same manner as in Example 2 except for Epicor 1009 (Shell Chemical Co., Ltd.). 6 Results of continuous printing test of the toner According to the results, it was confirmed that both fixing properties and filming resistance were excellent.
前記実施例Ｉ乃至■を含む主基材樹脂とカプセル用樹脂
それぞれについて９本発明者らの試作トナーの実験的検
討結果を要約すると次表の通り。The following table summarizes the results of experimental studies of nine trial toners made by the present inventors for each of the main base resin and capsule resin including Examples I to (2) above.
表
表中、実施例Ｖｌに示す連続トロ字試験結果番によれば
、定着性はずくれるが、３万シ一ト印字後にドラムフィ
ルミング現象による画像劣化が認められ。In the table, according to the result number of the continuous trot test shown in Example Vl, the fixing performance was poor, but image deterioration due to the drum filming phenomenon was observed after printing 30,000 sheets.
また実施例■の場合は、定着性が劣化することが確認さ
れたものである。尚、実施例■は、帯電制御剤のない比
較例であり、この場合画像特性が劣ることである。Furthermore, in the case of Example (2), it was confirmed that the fixing performance deteriorated. Note that Example (2) is a comparative example without a charge control agent, and in this case, the image characteristics are inferior.
前記表から明らかなようにエポキシ基材樹脂は。As is clear from the table above, the epoxy base resin is.
その数平均分子量が１０００〜４０００の領域であれば
。If the number average molecular weight is in the range of 1000 to 4000.
定着性に優れたまたフィルミングが少ないことが知られ
る。更に、前記基材樹脂に外皮するエポキシ樹脂として
は数平均分子量が４５００〜１００００の領域であれば
、定着性のよい、然もドラムフィルミング及びキャリア
フィルミング共に少ない優れたトナーが形成されること
になる。It is known to have excellent fixing properties and less filming. Furthermore, if the number average molecular weight of the epoxy resin coated on the base resin is in the range of 4,500 to 10,000, an excellent toner with good fixing properties and less drum filming and carrier filming will be formed. become.
前記本発明のフラッシュ定着用トナーによれば。 According to the flash fixing toner of the present invention.
定着性に優れ、かつキャリア表面におけるトナーフィル
ミング耐性、フォトコンドラムに対するトナーフィルミ
ング耐性、共に優れノこｉ・ナーが提供てきるので、信
頼性の高い印刷を実現することが可能となる。Since the adhesive has excellent fixing properties and excellent toner filming resistance on the carrier surface and toner filming resistance on the photoconductor drum, highly reliable printing can be achieved.
第１図ｔａ＋は低分子樹脂基材の外形図。
同図（１））は（ａ）図樹脂基利に高分子量樹脂を被覆
した１−ナー形状を示す図。
第２図は第１図（ｂｌのカプセル化トナー樹脂の定着過
程を示す図である。FIG. 1 ta+ is an outline drawing of a low-molecular resin base material. Figure (1)) is a diagram showing a 1-ner shape in which a resin base coated with a high molecular weight resin is shown in Figure (a). FIG. 2 is a diagram showing the fixing process of the encapsulated toner resin in FIG. 1 (bl).
Claims (4)
に高分子量の樹脂を被覆することを特徴とするフラッシ
ュ定着用トナー。(1) A toner for flash fixing, characterized in that the main base material is a low molecular weight resin powder, and the surface of the main base material is coated with a high molecular weight resin.
エポキシ樹脂を用いたことを特徴とする特許請求の範囲
第（１）項記載のフラッシュ定着用トナー。(2) The toner for flash fixing according to claim (1), wherein an epoxy resin containing a charge control agent is used as the high molecular weight resin.
０〜４０００であるエポキシ樹脂を用いたことを特徴と
する特許請求の範囲第（１）項記載のフラッシュ定着用
トナー。(3) As a low molecular weight powder resin, the number average molecular weight is 100.
The toner for flash fixing according to claim 1, characterized in that an epoxy resin having a molecular weight of 0 to 4,000 is used.
００〜１００００であることを特徴とする特許請求の範
囲第（１）項記載のフラッシュ定着用トナー。(4) The high molecular weight epoxy resin has a number average molecular weight of 45
00 to 10,000, the flash fixing toner according to claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61049035A JPS62205367A (en) | 1986-03-06 | 1986-03-06 | Flash fixing toner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61049035A JPS62205367A (en) | 1986-03-06 | 1986-03-06 | Flash fixing toner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62205367A true JPS62205367A (en) | 1987-09-09 |
Family
ID=12819828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61049035A Pending JPS62205367A (en) | 1986-03-06 | 1986-03-06 | Flash fixing toner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62205367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000060418A1 (en) * | 1999-04-02 | 2000-10-12 | Sanyo Chemical Industries, Ltd. | Dry toners |
| JP2004138985A (en) * | 2002-08-23 | 2004-05-13 | Toppan Forms Co Ltd | Toner coated with thin film and method for manufacturing the same toner |
-
1986
- 1986-03-06 JP JP61049035A patent/JPS62205367A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416917B1 (en) | 1919-04-07 | 2002-07-09 | Sanyo Chemical Industries Ltd. | Dry toners having specified condensation binder resins |
| WO2000060418A1 (en) * | 1999-04-02 | 2000-10-12 | Sanyo Chemical Industries, Ltd. | Dry toners |
| JP2004138985A (en) * | 2002-08-23 | 2004-05-13 | Toppan Forms Co Ltd | Toner coated with thin film and method for manufacturing the same toner |
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