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公开(公告)号：US4407923A
公开(公告)日：1983-10-04
申请号：US391721
申请日：1982-06-24
CPC分类号： G03G9/0836 , G03G9/0837 , G03G9/0838 , Y10S430/104
摘要： Disclosed is a dry magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said composition comprises as the powdery magnetic material a non-pulverizing agglomerate having a secondary particle size of 1 to 10 microns, which is formed by granulating and sintering fine cubic particles of magnetite or other ferrite having a primary particle size of 0.1 to 1 micron.
摘要翻译： 公开了一种干磁性显影剂，其基本上由包含分散在粘合剂树脂介质中的粘合剂树脂介质和粉末状磁性材料的组合物的颗粒成形制品组成，其中所述组合物包含作为粉末状磁性材料的非粉碎附聚物，其具有二次 颗粒尺寸为1至10微米，其通过造粒和烧结具有0.1至1微米的初级粒度的磁铁矿或其它铁氧体的精细立方体颗粒而形成。
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2.发明授权Dry magnetic developer containing a non-pulverizing agglumerate of cubic magnetite particles 失效含有非粉碎的立方磁铁矿颗粒的干磁性显影剂
公开(公告)号：US4416964A
公开(公告)日：1983-11-22
申请号：US296505
申请日：1981-08-26
CPC分类号： G03G9/0835 , G03G9/0837 , G03G9/0838
摘要： Disclosed is a dry magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said composition is composed of a non-pulverizing agglomerate of cubic particles, and particles having a number average particle size of 1 to 10 microns, as measured by an electron microscope, are incorporated as the powdery magnetic material.This magnetic developer is excellent in the image sharpness, the resolving power and the half tone-reproducing property, and is especially effective for developing a positively charged latent image which is formed on a p-type photosensitive plate such as a selenium photosensitive plate or a photosensitive plate comprising an organic photoconductor layer.
摘要翻译： 公开了一种干磁性显影剂，其基本上由包含分散在粘合剂树脂介质中的粘合剂树脂介质和粉末状磁性材料的组合物的颗粒成型制品组成，其中所述组合物由立方颗粒的非粉碎附聚物和颗粒 通过电子显微镜测量的数均粒径为1至10微米，作为粉末状磁性材料。 该磁性显影剂的图像清晰度，分辨率和半色调再现性能优异，并且对于形成在诸如硒感光板或p型感光板的p型感光板上形成带正电的潜像特别有效 包含有机光电导体层的感光板。
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3.发明授权
公开(公告)号：US4504562A
公开(公告)日：1985-03-12
申请号：US507901
申请日：1983-06-27
申请人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
发明人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
CPC分类号： G03G9/0833 , Y10S430/104 , Y10T428/2998
摘要： Disclosed is a one-component type magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said magnetic material comprising (A) a non-pulverizing agglomerate of cubic particles of magnetite having a particle size of 1 to 10 .mu.m as measured by an electron microscope and (B) magnetite particles having a particle size of 0.2 to 1 .mu.m at an (A)/(B) weight ratio of from 95/5 to 10/90, especially from 95/5 to 30/70.
摘要翻译： 公开了一种单组分型磁性显影剂，其基本上由包含分散在粘合剂树脂介质中的粘合剂树脂介质和粉末状磁性材料的组合物的颗粒成形制品组成，其中所述磁性材料包含（A）非粉碎附聚物 通过电子显微镜测定的粒径为1〜10μm的磁铁矿立方颗粒和（B）粒径为0.2-1μm的磁铁矿颗粒，（A）/（B）重量比为95 / 5至10/90，特别是95/5至30/70。
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公开(公告)号：US4414322A
公开(公告)日：1983-11-08
申请号：US341820
申请日：1982-01-22
申请人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
发明人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
CPC分类号： G03G9/0837 , G03G9/083 , G03G9/107 , G03G2215/0609
摘要： Disclosed is a two-component type magnetic developer comprising a magnetic carrier consisting of a non-pulverizing agglomerate of cubic particles of magnetite having a particle size of 1 to 14 microns as measured by an electron microscope and a magnetic toner having a high electric resistance and consisting of particles having a particle size of 3 to 30 microns and comprising a binder resin medium and magnetite having a particle size smaller than 1 micron, which is dispersed in the binder resin medium, the magnetic carrier/magnetic toner mixing weight ratio being in the range of from 5/100 to 40/100.
摘要翻译： 公开了一种双组分型磁性显影剂，其包含磁性载体，该磁性载体由电子显微镜测得的粒度为1至14微米的磁铁矿立方颗粒的非粉碎附聚物和具有高电阻的磁性调色剂组成， 由颗粒尺寸为3至30微米的颗粒组成，包含分散在粘合剂树脂介质中的粘合剂树脂介质和粒度小于1微米的磁铁矿，磁性载体/磁性调色剂混合重量比在 范围从5/100到40/100。
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5.发明授权Dry composite blended magnetic developer of resin encapsulated fine magnetite and resin encapsulated coarse magnetite 失效干燥复合混合磁性显影剂树脂封装细磁铁矿和树脂封装粗磁铁矿
公开(公告)号：US4414321A
公开(公告)日：1983-11-08
申请号：US324652
申请日：1981-11-24
申请人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
发明人： Nobuhiro Miyakawa , Masanori Fujii , Kouzi Maekawa
CPC分类号： G03G9/083
摘要： Disclosed is a dry composite magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said developer is formed by dry blending (A) a first particulate shaped article comprising a non-pulverizing agglomerate of cubic particles of magnetite having a number average particle size of 1 to 10 .mu.m as measured by an electron microscope with (B) a second particulate shaped article comprising magnetite particles having a particle size of 0.2 to 1 .mu.m at an (A)/(B) weight ratio of from 95/5 to 10/90, especially from 95/5 to 30/70.
摘要翻译： 公开了一种干复合磁性显影剂，其基本上由包含粘合剂树脂介质和分散在粘合剂树脂介质中的粉末状磁性材料的组合物的颗粒成型制品组成，其中所述显影剂通过干混（A）第一颗粒成形制品 包括通过电子显微镜测定的数均粒径为1〜10μm的磁铁矿的立方粒子的非粉碎团聚物，（B）包含粒径为0.2〜1μm的磁铁矿颗粒的第2粒状成形体 （A）/（B）重量比为95/5至10/90，特别是95/5至30/70。
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公开(公告)号：US4404269A
公开(公告)日：1983-09-13
申请号：US320938
申请日：1981-11-13
申请人： Nobuhiro Miyakawa , Kouzi Maekawa , Masanori Fujii
发明人： Nobuhiro Miyakawa , Kouzi Maekawa , Masanori Fujii
CPC分类号： G03G9/0819 , G03G9/0823 , G03G9/0836
摘要： A two-component dry-type composite developer which is a mixture of 100 parts of (A) magnetic toner particles of a binder resin and 40 to 70% by weight of magnetite having a bulk density of at least 0.45 g/ml, a number average maximum size of at least 0.5 .mu.m and a maximum size/minimum size ratio of from 1.0 to 5.5 and 1 to 30 parts of (B) non-magnetic toner particles of binder resin, pigment and negative charge controlling agent. The magnetic toner particles have an electrostatic capacitance of 7 to 8.5 picofarad, a dielectric constant of 3.59 to 4.36, and a volume resistivity of 1.2 to 8.6.times.10.sup.14 .OMEGA.-cm, and the nonmagnetic toner particles have an electrostatic capacitance of 6.0 to 8.0 picofarad and a dielectric constant of 3.08 to 4.10. The toner particles (A) and (B) have friction chargeability characteristics of the same polarity and are consumed at the same rate during development such that the mixing ratio remains constant and the development characteristics are not changed during use. Copies of from soft to hard tones can be obtained by changing the mixing ratio. Development and transfer efficiencies are improved.
摘要翻译： 一种双组分干式复合显影剂，其是100份（A）粘合剂树脂的磁性调色剂颗粒和40至70重量％的堆积密度为至少0.45g / ml的磁铁矿的混合物，数量 平均最大尺寸为至少0.5μm，最大尺寸/最小尺寸比为1.0至5.5，以及1至30份（B）粘合剂树脂，颜料和负电荷控制剂的非磁性调色剂颗粒。 磁性调色剂颗粒具有7至8.5皮法的静电电容，介电常数为3.59至4.36，体积电阻率为1.2至8.6×1014欧姆 - 厘米，非磁性调色剂颗粒的静电电容为6.0至8.0皮法， 介电常数为3.08〜4.10。 调色剂颗粒（A）和（B）具有相同极性的摩擦带电性能，并且在显影期间以相同的速率消耗，使得混合比保持恒定，并且显影特性在使用期间不改变。 通过改变混合比可以获得从柔软到柔和色调的复印件。 开发和转移效率得到提高。
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公开(公告)号：US4401741A
公开(公告)日：1983-08-30
申请号：US382605
申请日：1982-05-27
申请人： Nobuhiro Miyakawa , Kouzi Maekawa
发明人： Nobuhiro Miyakawa , Kouzi Maekawa
CPC分类号： G03G9/091 , G03G9/09 , G03G9/0918 , G03G9/097 , Y10S430/104
摘要： Disclosed is an electrically insulating, magnetic one-component type developer comprising an electrically insulating binder medium, and a magnetic material powder and a charge control agent dispersed in the binder medium, wherein the charge control agent comprises a negative or positive charge control agent and a charge control agent having a polarity opposite to that of said charge control agent at a weight ratio of from 1/0.05 to 1/1.5.
摘要翻译： 公开了一种电绝缘的磁性单组分型显影剂，其包含电绝缘粘合剂介质和分散在粘合剂介质中的磁性材料粉末和电荷控制剂，其中电荷控制剂包括负电荷或正电荷控制剂和 电荷控制剂，其重量比为1 / 0.05〜1 / 1.5，极性与电荷控制剂的极性相反。
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公开(公告)号：US4502067A
公开(公告)日：1985-02-26
申请号：US509068
申请日：1983-06-29
CPC分类号： B41M5/3275 , Y10S428/913 , Y10S428/914
摘要： Disclosed is a heat-sensitive recording material capable of forming an image of a hue close to a pure black at a low density, which comprises a dispersion of a leuco dye, a heat-fusible organic acidic substance solid at normal temperature and a sensitizing agent in a binder, wherein the leuco dye comprises a fluoran type leuco dye for forming a black color and a benzofluoran type leuco dye for forming a red dye in an amount of 0.01 to 1% by weight based on said black color-forming leuco dye.
摘要翻译： 公开了一种热敏记录材料，其能够以低密度形成接近纯黑色的色调图像，其包括常温下的无色染料，热熔性有机酸性物质固体的分散体和敏化剂 在粘合剂中，其中所述无色染料包含用于形成黑色的荧光型无色染料和用于形成基于所述黑色成色无色染料0.01至1重量％的量的红色染料的苯并荧烷型无色染料。
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公开(公告)号：US4500897A
公开(公告)日：1985-02-19
申请号：US509067
申请日：1983-06-29
CPC分类号： B41M5/327 , B41M5/3275
摘要： Disclosed is a heat-sensitive recording element capable of forming an image of a hue close to a pure black at a low density, which comprises a dispersion of a leuco dye, a heat-fusible organic acidic substance solid at normal temperature and a sensitizing agent in a binder, wherein the leuco dye comprises a fluoran type leuco dye for forming a black color and a rhodamine lactam type leuco dye for forming a red dye in an amount of 1.5 to 30% by weight based on said black color-forming leuco dye.
摘要翻译： 公开了一种能够以低密度形成接近纯黑色调的色相的热敏记录元件，其包括常温下的无色染料，热熔性有机酸性物质固体的分散体和敏化剂 在粘合剂中，其中无色染料包含用于形成黑色的荧光型无色染料和用于形成基于所述黑色成色无色染料的1.5至30重量％的红染料的罗丹明内酰胺型无色染料 。
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10.发明授权One-component type magnetic developer for development and transfer of positively charged images 失效用于显影和转印带正电图像的单组分型磁性显影剂
公开(公告)号：US4362803A
公开(公告)日：1982-12-07
申请号：US223264
申请日：1981-01-08
申请人： Nobuhiro Miyakawa , Takashi Teshima
发明人： Nobuhiro Miyakawa , Takashi Teshima
CPC分类号： G03G9/09733 , G03G9/08 , G03G9/0836 , G03G9/0838 , G03G9/091 , G03G9/09791
摘要： Disclosed is a one-component type magnetic developer for development of positively charged images and transfer of developed images, which comprises particles of a composition comprising a finely divided magnetic material dispersed in a binder medium comprising a vinyl aromatic polymer or acrylic polymer in an amount of 45 to 95% by weight based on the magnetic material, said particles of the magnetic material having a bulk density of at least 0.42 g/ml, a number average maximum size of 0.35 .mu.m as measured by an electron microscope and a maximum size/minimum size ratio of from 1.0 to 5.5, especially from 1.0 to 3, wherein said composition further comprises an aliphatic carboxylic acid having a total carbon number (inclusive of the carbon atom of the carboxyl group) of at least 14 per carboxyl group in an amount of 0.2 to 4% by weight and a negative charge controlling agent consisting of an alcohol-soluble metal-containing dye in an amount of 0.5 to 5% by weight based on said polymer.This magnetic developer provides an excellent transferred image having high image density and image sharpness on a plain paper as a transfer sheet without fogging or broadening of the contour of the image. This image is excellent in reproducibility of fine lines, solid black portions and half tones.
摘要翻译： 公开了用于开发正电荷图像和显影图像转印的单组分型磁性显影剂，其包含分散在包含乙烯基芳族聚合物或丙烯酸类聚合物的粘合剂介质中的细碎磁性材料的组合物的颗粒，其量为 基于磁性材料为45〜95重量％，所述磁性体的粒子的体积密度为至少0.42g / ml，通过电子显微镜测定的数均最大尺寸为0.35μm，最大尺寸/ 最小尺寸比为1.0至5.5，特别是1.0至3，其中所述组合物还包含总羧基（包括羧基的碳原子）至少为14个/个羧基的脂族羧酸的量为 为0.2〜4重量％，负极电荷控制剂为基于所述聚合物的0.5〜5重量％的含醇溶性金属染料。 该磁性显影剂在作为转印纸的普通纸上提供了具有高图像密度和图像清晰度的优异转印图像，而不会使图像的轮廓变灰或变宽。 该图像的细线，实心黑色部分和半色调的再现性优异。
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