JPH0359673A - Recording method - Google Patents
Recording methodInfo
- Publication number
- JPH0359673A JPH0359673A JP1195622A JP19562289A JPH0359673A JP H0359673 A JPH0359673 A JP H0359673A JP 1195622 A JP1195622 A JP 1195622A JP 19562289 A JP19562289 A JP 19562289A JP H0359673 A JPH0359673 A JP H0359673A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- magnetic
- resin
- temperature
- image
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 18
- 230000005291 magnetic effect Effects 0.000 claims abstract description 52
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 239000011347 resin Substances 0.000 claims abstract description 48
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 34
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 7
- 230000008719 thickening Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000004040 coloring Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 description 11
- 229920005992 thermoplastic resin Polymers 0.000 description 11
- 239000003086 colorant Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000005039 triarylmethyl group Chemical group 0.000 description 2
- -1 Fe ions Chemical class 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、彩色性に優れた磁性現像剤を用いた記録方法
に関する。更には有機強磁性樹脂を主成分として構成さ
れた彩色性に優れた磁性現像剤を用いた記録方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording method using a magnetic developer with excellent coloring properties. Furthermore, the present invention relates to a recording method using a magnetic developer having excellent coloring properties and composed mainly of an organic ferromagnetic resin.
従来、一般に所謂−成分磁性現像剤は熱可塑性樹脂を主
成分とした現像剤粒子の内部に不透明な金属強磁性体粒
子を含有しているために、黒色の磁性現像剤像乃至は濁
った色の磁性現像剤像の記録を得るには良いが、色鮮や
かな磁性現像剤像の記録を得ることは出来なかった。Conventionally, so-called -component magnetic developers generally contain opaque metal ferromagnetic particles inside developer particles whose main component is a thermoplastic resin, resulting in a black magnetic developer image or a cloudy color. Although it was good for obtaining a record of a magnetic developer image, it was not possible to obtain a record of a vividly colored magnetic developer image.
本発明は前述した従来の記録方法とは異なり、有機強磁
性樹脂を主成分として構成した磁性現像剤を用いること
により、従来出来なかった磁性現像剤を用いても彩色性
に優れた色鮮やかな磁性現像剤像記録が得られる新規な
記録方法を提供することを目的とする。更には異なる色
の磁性現像剤像を重ねることによって色彩再現性が優れ
た記録方法を提供することを目的とする。さらには現像
剤樹脂の定着装置へのオフセットの少ない安定した記録
方法を提供することにある。Unlike the conventional recording method described above, the present invention uses a magnetic developer mainly composed of an organic ferromagnetic resin. It is an object of the present invention to provide a new recording method capable of obtaining magnetic developer image recording. A further object of the present invention is to provide a recording method with excellent color reproducibility by overlapping magnetic developer images of different colors. Another object of the present invention is to provide a stable recording method with less offset of developer resin to a fixing device.
本発明によれば、現像剤供給容器内の加熱によって軟化
し、軟化温度以上で熱硬化する有機強磁性樹脂（有機金
属錯体を含む）を主成分として構成された磁性現像剤を
、内部に磁界発生手段を有する現像剤保持部材上に担持
させて該磁性現像剤を対向して配置された潜像保持体の
現像部に供給してその潜像を現像し現像剤像を形威し、
該現像剤像を記録紙に転写した後、該現像剤の熱硬化温
度又は増粘温度以上まで加熱し軟化定着させるようにし
たから、磁性現像剤を用いても彩色性に優れた色鮮やか
な磁性現像剤像記録が得られ、異なる色の磁性現像剤像
を重ねることによっても色彩再現性が優れた記録ができ
る。さらに現像剤樹脂の定着装置へのオフセットの少な
い安定した記録ができる。According to the present invention, a magnetic developer mainly composed of an organic ferromagnetic resin (including an organometallic complex) that is softened by heating in a developer supply container and thermosets at a temperature higher than the softening temperature is placed inside a magnetic field. The magnetic developer carried on a developer holding member having a generating means is supplied to a developing section of a latent image holding member disposed facing each other to develop the latent image and form a developer image;
After the developer image is transferred to recording paper, it is heated to a temperature higher than the thermosetting temperature or thickening temperature of the developer to soften and fix it, so even when using a magnetic developer, it is possible to produce vivid colors with excellent coloring properties. Magnetic developer image recording can be obtained, and recording with excellent color reproducibility can also be achieved by overlapping magnetic developer images of different colors. Furthermore, stable recording can be performed with less offset of the developer resin to the fixing device.
また本発明によれば、上記磁性現像剤の内部に可視光の
波長以下の大きさの鉄・ニッケル・コノくルト等の単体
金属又は合金の強磁性金属（金属イオンを含む）を含有
させて磁気特性を補うことによっても、現像剤保持部材
方向に充分な磁気的吸引力をもたせることが出来るから
現像剤の飛散も少なく、現像剤粒子同志の凝集も避けら
れ忠実な現像が可能になり、かつ可視光の波長以下の大
きさの強磁性金属（金属イオンを含む）を補助的に含有
させてもこのことによって光透過性が損なわれることが
ないから、彩色性と色彩再現性に優れた色鮮やかな磁性
現像剤像記録ができる。Further, according to the present invention, a ferromagnetic metal (including metal ions) in the form of a single metal or an alloy such as iron, nickel, or Konolt having a size smaller than the wavelength of visible light is contained inside the magnetic developer. By supplementing the magnetic properties, it is possible to provide sufficient magnetic attraction in the direction of the developer holding member, which reduces developer scattering, prevents aggregation of developer particles, and enables faithful development. In addition, even if a ferromagnetic metal (including metal ions) with a size smaller than the wavelength of visible light is supplementarily contained, the light transmittance is not impaired, so it has excellent colorability and color reproducibility. Capable of recording vividly colored magnetic developer images.
使用する有機磁性樹脂としては例えば日本化学会（’８
９／春）予稿集ＩＩＫＯ４，１１ＫＯ７，１ＩＫＯ８等
に開示されている、例えばトリアリールメチル構造を有
するピレン−芳香族アルデヒド系からなる縮合多環多核
芳香族（ＣＯＰＮＡ樹脂）等公知の光読水素法や放電法
によって不対電子構造を作って必要なスピンを充分に立
てて作った目的の磁気的特性にあった有機磁性樹脂を使
用すれば良い。これらの樹脂はある温度で軟化し、その
温度より高い温度で熱硬化する。一般に熱硬化すると高
分子化し、その色彩は深色化する。The organic magnetic resin used is, for example, the Chemical Society of Japan ('8
9/Spring) Known optical hydrogen reading methods, such as condensed polycyclic polynuclear aromatics (COPNA resin) consisting of a pyrene-aromatic aldehyde system having a triarylmethyl structure, as disclosed in Proceedings IIKO4, 11KO7, 1IKO8, etc. It is sufficient to use an organic magnetic resin that has the desired magnetic properties by creating an unpaired electron structure using a discharge method or a discharge method to sufficiently generate the necessary spin. These resins soften at a certain temperature and thermoset at a temperature above that temperature. Generally, when cured by heat, it becomes a polymer and its color becomes deeper.
また使用する加熱定着装置はその方式に限定されないが
、例えば熱ローラ定着器を使用すれば良い。この熱ロー
ラの温度制御方法は例えば特開昭６２−２０６５８０号
証の明細書に開示された方法で行なえば良い。Further, the heat fixing device used is not limited to that type, but for example, a heat roller fixing device may be used. The temperature control method for the heat roller may be carried out, for example, by the method disclosed in the specification of JP-A-62-206580.
以下に本発明を図示の実施例に基づいて説明する。 The present invention will be explained below based on illustrated embodiments.
第１−１図乃至第１−４図は現像剤の特徴を示したもの
で、第１−１図〜第１−３図は本発明に係る有機強磁性
樹脂を主成分として構成された磁性現像剤を示す概略断
面図である。第１−４図は従来の磁性現像剤を示す概略
断面図である。図において１は磁性現像剤、２は加熱に
よって軟化し該軟化温度以上で熱硬化する有機強磁性樹
脂かもしくはこの樹脂を主成分とした樹脂で熱可塑性樹
脂との混合樹脂で、それ自体が着色されているかもしく
は染料でも着色されている。３は有機強磁性樹脂かもし
くはこの樹脂を主成分とした樹脂で、それ自体が着色さ
れているかもしくは染料でも着色されており、４は熱可
塑性樹脂である。５は無機強磁性粉で着色剤としての顔
料の役目も果たしている。第１−１図は現像剤の全体が
有機強磁性樹脂を主成分として構成された磁性現像剤で
、加熱によって軟化し該軟化温度以上で熱硬化する有機
強磁性樹脂かもしくはこの樹脂を主成分とした樹脂で熱
可塑性樹脂との混合樹脂で、それ自体が着色されている
かもしくは染料でも着色されている。第１−２図は現像
剤の内部が有機強磁性樹脂かもしくはこの樹脂を主成分
とした樹脂で構成されていて、それ自体が着色されてい
るかもしくは染料でも着色されており、この周囲が熱可
塑性樹脂で被覆された構造の現像剤を示す。第１−３図
は有機強磁性樹脂かもしくはこの樹脂を主成分とした樹
脂３で、それ自体が着色されているかもしくは染料でも
着色されてた粒子の周囲が熱可塑性樹脂４で結着された
構造からなる現像剤を示す。第１−４図は従来の磁性現
像剤で熱可塑性樹脂４の内部にＦｅ ３０４等の無機強
磁性粉が分散されており、着色剤としての顔料の役目も
果たし、目的によっては無機強磁性粉を着色している。Figures 1-1 to 1-4 show the characteristics of the developer, and Figures 1-1 to 1-3 show the magnetic developer mainly composed of the organic ferromagnetic resin according to the present invention. FIG. 3 is a schematic cross-sectional view showing a developer. 1-4 are schematic cross-sectional views showing a conventional magnetic developer. In the figure, 1 is a magnetic developer, and 2 is an organic ferromagnetic resin that softens when heated and hardens at temperatures above the softening temperature, or a resin containing this resin as its main component and a mixed resin with a thermoplastic resin, which itself is colored. or colored with dye. 3 is an organic ferromagnetic resin or a resin containing this resin as a main component, which is itself colored or colored with a dye, and 4 is a thermoplastic resin. 5 is an inorganic ferromagnetic powder that also plays the role of a pigment as a coloring agent. Figure 1-1 shows a magnetic developer in which the entire developer is composed mainly of an organic ferromagnetic resin. It is a mixed resin with a thermoplastic resin, and is either colored itself or colored with a dye. Figure 1-2 shows that the inside of the developer is composed of an organic ferromagnetic resin or a resin containing this resin as its main component, and is either colored itself or colored with dye, and the surrounding area is heated. A developer having a structure coated with a plastic resin is shown. Figure 1-3 shows a resin 3 that is either an organic ferromagnetic resin or has this resin as its main component, and the particles, which are themselves colored or colored with dye, are bound with a thermoplastic resin 4. A developer consisting of a structure is shown. Figure 1-4 shows a conventional magnetic developer in which inorganic ferromagnetic powder such as Fe 304 is dispersed inside a thermoplastic resin 4, which also serves as a pigment as a coloring agent, and depending on the purpose, inorganic ferromagnetic powder is being colored.
しかしこの場合はどんなに頑張っても明るい彩色性の優
れた色は出せない。However, in this case, no matter how hard I try, I cannot produce bright colors with excellent chromaticity.
第２図は上記加熱によって軟化し該軟化温度以上で熱硬
化する有機強磁性現像剤の現像剤像を記録紙上に定着せ
しめる定着温度Ｔｆを示し、さらに詳しくは第３図で示
した記録装置の熱ローラ定着装置の温度制御された熱ロ
ーラ温度Ｔを時間ｔに対して示す。温度制御方法は公知
の方法で充分である。例えば特開昭６２−２０６５８０
号証明細書等に開示された方法で良い。熱ローラ温度Ｔ
は１＝０で温度が立ち上がり、有機磁性樹脂の軟化温度
Ｔ、より高温で、有機強磁性現像剤の硬化温度又は増粘
温度Ｔ２以上の温度の温度範囲に温度制御されて定着さ
れる。ここでＴは定着温度を意味し、熱ローラ温度のみ
に限定されるものではない。FIG. 2 shows the fixing temperature Tf at which a developer image of an organic ferromagnetic developer that is softened by the heating and heat-cured above the softening temperature is fixed on the recording paper. The temperature-controlled thermal roller temperature T of the thermal roller fixing device is shown versus time t. Any known temperature control method is sufficient. For example, JP-A-62-206580
The method disclosed in the license certificate etc. may be used. Heat roller temperature T
The temperature rises when 1=0, and the temperature is controlled to be fixed within a temperature range that is higher than the softening temperature T of the organic magnetic resin, or higher than the curing temperature or thickening temperature T2 of the organic ferromagnetic developer. Here, T means the fixing temperature, and is not limited to only the heat roller temperature.
第３図は本実施例で用いた記録装置の概略を示す図で、
１１は電子写真感光体から成る静電潜像保持体、１２は
帯電器、１３は像露光、１４． １５は現像装置で、１
４−１と１５−１はその内部に磁界発生手段を有する現
像剤保持部材（現像ローラ）、１６は無端状の転写ベル
ト、１７．１８は駆動ローラ、Ｔ９は転写ベルトを帯電
させるための帯電器、２０は給紙トレイ、２１は給紙ロ
ーラ、２２は給紙ガイド、２３は記録紙２４を転写ベル
トから分離させるための放電器、２５は熱ローラ定着装
置、２６はクリーニング装置である。静電潜像保持体１
１上に形成された静電潜像を現像装置１４、又は１５で
静電潜像保持体１１の回転ごとに現像される。転写ベル
ト１６の帯電面に給紙ガイド２２を通過して給紙された
記録紙２４は転写ベルトに静電的に付着し、回転する転
写ベルトに従って搬送され、電子写真感光体から成る静
電潜像保持体１１との最近接点で静電潜像保持体１１上
の現像剤像を必要な回数だけ繰り返し転写して、時によ
って又画面の場所によって異なる色の現像剤像を重ねて
転写し、その後放電器２３によって転写ベルト１６上の
電荷を弱めることによって表面に未定着現像剤像を有す
る記録紙２４を転写ベルトから分離し熱ローラ定着装置
２５に送って定着する。この時の定着温度は第２図に示
したＴ１とＴ２の温度範囲内に制御されて定着される。FIG. 3 is a diagram schematically showing the recording device used in this example.
11 is an electrostatic latent image holder made of an electrophotographic photoreceptor; 12 is a charger; 13 is an image exposure device; 14. 15 is a developing device;
4-1 and 15-1 are developer holding members (developing rollers) each having a magnetic field generating means therein, 16 is an endless transfer belt, 17.18 is a drive roller, and T9 is a charging member for charging the transfer belt. 20 is a paper feed tray, 21 is a paper feed roller, 22 is a paper feed guide, 23 is a discharge device for separating the recording paper 24 from the transfer belt, 25 is a heat roller fixing device, and 26 is a cleaning device. Electrostatic latent image holder 1
The electrostatic latent image formed on the electrostatic latent image holding member 11 is developed by a developing device 14 or 15 each time the electrostatic latent image holding member 11 rotates. The recording paper 24 fed through the paper feed guide 22 onto the charged surface of the transfer belt 16 electrostatically adheres to the transfer belt, is conveyed along the rotating transfer belt, and is transferred to an electrostatic latent made of an electrophotographic photoreceptor. The developer image on the electrostatic latent image carrier 11 is repeatedly transferred as many times as necessary at the closest point to the image carrier 11, and the developer images of different colors are superimposed and transferred depending on the time or location on the screen, Thereafter, by weakening the electric charge on the transfer belt 16 by the discharger 23, the recording paper 24 having the unfixed developer image on its surface is separated from the transfer belt and sent to the heat roller fixing device 25 where it is fixed. The fixing temperature at this time is controlled to be within the temperature range of T1 and T2 shown in FIG. 2 for fixing.
使用した有機強磁性樹脂は日本化学会（’８９／春）予
稿集１１ＫＯ４，ＩＩＫＯ７，ｌｌＫＯ３に開示されて
いるトリアリールメチル構造を有するピレン−芳香族ア
ルデヒド系から成る縮合多核芳香族（ＣＯＰＮＡ樹脂）
を公知の光脱水法や放電法によって不対電子構造を作っ
て、必要なスピンを充分に立てて作った有機強磁性樹脂
を使った。この樹脂は摂氏５５〜６０度で軟化しくＴ
、 ＝５５〜６０度）、摂氏２２０度以上で硬化した。The organic ferromagnetic resin used is a condensed polynuclear aromatic resin (COPNA resin) consisting of a pyrene-aromatic aldehyde system having a triarylmethyl structure, which is disclosed in the Chemical Society of Japan ('89/Spring) Proceedings 11KO4, IIKO7, llKO3.
An organic ferromagnetic resin was used, which was created by creating an unpaired electron structure using a known photo-dehydration method or discharge method to generate sufficient spin. This resin softens at 55 to 60 degrees Celsius.
, =55-60 degrees), and was cured at 220 degrees Celsius or higher.
僅かな金属イオンの含有（例えばＦｅイオン含有）によ
っても彩色豊かな赤色と黄色の有機強磁性樹脂が得られ
た。この粒径が約１２マイクロメーターの粒子はその内
部に磁界発生手段を有する現像剤保持部材１４−１．
１５−１の表面に充分に磁力によって引き付けられる力
であった。Richly colored red and yellow organic ferromagnetic resins were obtained even by containing a small amount of metal ions (for example, containing Fe ions). These particles having a particle size of approximately 12 micrometers are contained in the developer holding member 14-1, which has a magnetic field generating means therein.
15-1 was sufficiently attracted to the surface by magnetic force.
含有する金属イオンが例えばＦｅイオンのような強磁性
金属の場合は、得られる有機強磁性樹脂粒子に作用する
磁力を補助的に強くする効果が得られた。When the metal ions contained were ferromagnetic metals such as Fe ions, the effect of supplementarily strengthening the magnetic force acting on the resulting organic ferromagnetic resin particles was obtained.
また使用した熱可塑性樹脂は軟化温度が約６０度のスチ
レン系の樹脂であった。上記有機強磁性樹脂に全樹脂の
重量当たりの重量比で５． ｔｏ、 ２０゜３０％の
この熱可塑性樹脂を混入させて作ったそれぞれの有機磁
性現像剤の硬化温度又は増粘温度Ｔ２は摂氏１７０度〜
１８５度の範囲であった。したがって定着温度ＴｆをＴ
（＞Ｔ２＞Ｔ１の１９５度で定着させた。なお重量比で
５０％以上の熱可塑性樹脂を混入させると、粒径が約１
２マイクロメータのこの粒子はその内部に磁界発生手段
を有する現像剤保持部材１４−１．１５−１の表面に充
分に磁力によって引き付けられなくなり、有機強磁性樹
脂の構成化を全樹脂の重量当たりの重量比に対して５０
％以上に成るように構威しなければならないことがわか
った。有機強磁性樹脂を主成分とした磁性現像剤の「主
成分」の意味は、この意味である。このことは従来の磁
性現像剤と異なり、全体がもしくはほぼ全体が強磁性体
であり、全体が常に均一に磁力を受け、有機強磁性樹脂
を使用することの磁気的意味を有意義に保持することか
らも大切である。たとえ現像剤の粒子が更に破壊されて
小さくなっでも確実にその粒径に依存した磁力が働くか
らである。The thermoplastic resin used was a styrene resin with a softening temperature of about 60 degrees. The weight ratio of the organic ferromagnetic resin to the total weight of the resin is 5. The curing temperature or thickening temperature T2 of each organic magnetic developer made by mixing 20° to 30% of this thermoplastic resin is 170 degrees Celsius to 170 degrees Celsius.
The range was 185 degrees. Therefore, fixing temperature Tf is T
(Fixed at 195 degrees with >T2>T1.If a thermoplastic resin of 50% or more by weight is mixed, the particle size will be approximately 1
These particles of 2 micrometers are no longer sufficiently attracted by the magnetic force to the surface of the developer holding member 14-1. 50 to the weight ratio of
% or more. This is the meaning of the "main component" of a magnetic developer whose main component is an organic ferromagnetic resin. This differs from conventional magnetic developers in that it is entirely or almost entirely made of ferromagnetic material, and the whole is always uniformly subjected to magnetic force, meaning that the magnetic meaning of using organic ferromagnetic resin is meaningfully maintained. It is also important from This is because even if the developer particles are further broken down and become smaller, a magnetic force depending on the particle size will surely work.
上記に示した有機強磁性樹脂と別の熱可塑性樹脂との構
成比率を変えた有機磁性現像剤を使って、第１表に示す
ように、
（１） Ｔｔ＞Ｔ ２ ＞Ｔ Ｈ、Ｔｔ＝摂氏１９５度
の定着条件と
（２） Ｔ ２ ＞ Ｔｒ ＞ Ｔ １、Ｔｔ＝摂氏１
４５度の定着条件とで
現像記録した現像剤像をオイル塗布しないで熱ローラ定
着（接触定着）させた結果を第１表にまとめて示した。Using an organic magnetic developer in which the composition ratio of the organic ferromagnetic resin and another thermoplastic resin shown above is changed, as shown in Table 1, (1) Tt>T 2 >T H, Tt= Fixing condition of 195 degrees Celsius and (2) T 2 > Tr > T 1, Tt = 1 degrees Celsius
Table 1 summarizes the results of developing and recording developer images under a fixing condition of 45 degrees and fixing them with a hot roller (contact fixing) without applying oil.
この結果（１） Ｔｒ＞Ｔ ２ ＞Ｔ Ｈ、Ｔｒ＝摂氏
１９５度の定着条件のもとで記録したほうが熱ローラへ
の現像剤樹脂のオフセットは少なく実用に充分満足でき
るものであった。これは定着時において現像剤像を形成
する現像剤樹脂が軟化後硬化ないし増粘した状態で熱ロ
ーラ（熱伝達接触体）から離れるようになるため、熱ロ
ーラ（熱伝達接触体）に現像剤樹脂が付着しオフセット
しにくくなるからである。また現像剤樹脂中の熱可塑性
樹脂の構成比率を５０％未満、好ましくは２０％以下に
した方がオフセット性の点から好ましい。The results were as follows: (1) Recording under the fixing conditions of Tr>T 2 >T H and Tr=195 degrees Celsius caused less offset of the developer resin to the heat roller, which was sufficiently satisfactory for practical use. This is because during fixing, the developer resin that forms the developer image softens and then leaves the heat roller (heat transfer contact) in a hardened or thickened state. This is because the resin will adhere and become difficult to offset. Further, it is preferable from the viewpoint of offset properties that the composition ratio of the thermoplastic resin in the developer resin is less than 50%, preferably 20% or less.
また異なる色の有機強磁性現像剤像を記録紙上に重ねて
記録したところ、彩色性の優れた混色像かえられた。こ
の色は従来の無機強磁性体を内部に含有した磁性現像剤
では得られない彩色性豊かな現像剤像であった。勿論−
色の現像剤像においても同様であることは言うまでもな
い。Furthermore, when organic ferromagnetic developer images of different colors were recorded on recording paper, a mixed color image with excellent coloring properties was obtained. This color was a richly colored developer image that could not be obtained with conventional magnetic developers containing an inorganic ferromagnetic material. Of course-
Needless to say, the same applies to color developer images.
添付図面中、第１−１図、第１−２図及び第１−３図は
本発明に係る磁性現像剤の概略断面図を示し、第１−４
図は、従来の磁性現像剤の概略的断面図を示す。
第２図は有機強磁性現像剤の熱定着性を説明するための
図である。
第３図は本実施例で用いた記録装置の概略図を示す。
第１−１図
ｕｌ−３図
婁１−２図
第７−＋図
丁ｆ ： 軟ゴム ＪＬ笈In the accompanying drawings, FIGS. 1-1, 1-2, and 1-3 show schematic cross-sectional views of the magnetic developer according to the present invention, and FIGS.
The figure shows a schematic cross-sectional view of a conventional magnetic developer. FIG. 2 is a diagram for explaining the heat fixability of an organic ferromagnetic developer. FIG. 3 shows a schematic diagram of the recording apparatus used in this example. Figure 1-1 ul-3 Figure 1-2 Figure 7-+ Figure f: Soft rubber JL
Claims (2)
度以上で熱硬化する有機強磁性樹脂を主成分として構成
された磁性現像剤を、内部に磁界発生手段を有する現像
剤保持部材上に担持させて該磁性現像剤を対向して配置
された潜像保持体の現像部に供給し、その潜像を現像し
現像剤像を形成し、該現像剤像を記録紙に転写した後、
該有機強磁性樹脂の熱硬化温度又は増粘温度以上まで加
熱し定着させることを特徴とする記録方法。(1) A magnetic developer mainly composed of an organic ferromagnetic resin that softens when heated in a developer supply container and hardens at temperatures above the softening temperature is placed on a developer holding member that has a magnetic field generating means inside. The loaded magnetic developer is supplied to a developing section of a latent image carrier disposed facing each other, the latent image is developed to form a developer image, and the developer image is transferred to a recording paper.
A recording method characterized by fixing the organic ferromagnetic resin by heating it to a temperature equal to or higher than the thermosetting temperature or thickening temperature.
性現像剤の内部に含むことを特徴とする特許請求の範囲
第１項に記載の記録方法。(2) The recording method according to claim 1, wherein the magnetic developer contains a ferromagnetic metal having a size smaller than the wavelength of visible light.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195622A JPH0812462B2 (en) | 1989-07-28 | 1989-07-28 | Recording method |
| US08/157,433 US5407769A (en) | 1989-07-28 | 1993-11-26 | Magnetic toner having triaryl methyl organic resin |
| US08/355,494 US5523190A (en) | 1989-07-28 | 1994-12-14 | Magnetic toner and recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195622A JPH0812462B2 (en) | 1989-07-28 | 1989-07-28 | Recording method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0359673A true JPH0359673A (en) | 1991-03-14 |
| JPH0812462B2 JPH0812462B2 (en) | 1996-02-07 |
Family
ID=16344233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1195622A Expired - Fee Related JPH0812462B2 (en) | 1989-07-28 | 1989-07-28 | Recording method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0812462B2 (en) |
-
1989
- 1989-07-28 JP JP1195622A patent/JPH0812462B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0812462B2 (en) | 1996-02-07 |
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