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1. 发明专利

JPS59182464A Method for electrophotography 失效
标题翻译：电泳方法
公开(公告)号：JPS59182464A
公开(公告)日：1984-10-17
申请号：JP5512483
申请日：1983-04-01
申请人： Hitachi Ltd , Hitachi Metals Ltd
发明人： KAWANISHI TSUNEAKI , MORI YASUKI , NOGUCHI KOUJI , IIMURA TSUTOMU
IPC分类号： G03G9/10 , G03G9/08 , G03G9/083 , G03G9/107 , G03G13/09 , G03G15/09
CPC分类号： G03G9/107 , G03G9/0823 , G03G9/083 , G03G13/09
摘要： PURPOSE: To prevent an electrostatic charging flocculation of a toner, and to obtain a good developing property and transfer property by using a ferrite carrier of semi-conductivity for a magnetic brush developing method.
CONSTITUTION: In a developing method of a magnetic toner, when developing a charge type magnetic toner, a lump of the toner is broken down by a mecanical force of a carrier, a fluidity of the toner is improved, a charging flocculation of the toner is prevented and a line of under development is eliminated by adding a semi-conductive ferrite carrier to the charge type magnetic toner. The ferrite carrier is constituted of a perfect mixture of a metallic oxide and an iron oxide, and it is crystallographically a manetic material having a structure of a spinel, a hexagonal crystal, etc., and for instance, a sintered body of an oxide of nickel, zinc, manganese calcium, etc. and a trivalent iron oxide.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了防止调色剂的静电充电絮凝，并且通过使用用于磁刷显影方法的半导电性铁氧体载体来获得良好的显影性和转印性。构成：在磁性调色剂的显影方法中，当显影充电型磁性调色剂时，调色剂块被载体的机械力分解，调色剂的流动性提高，调色剂的充电絮凝为通过向充电型磁性调色剂添加半导体铁氧体载体来消除正在研发的一行。铁氧体载体由金属氧化物和氧化铁的完美混合物构成，并且在结晶学上是具有尖晶石，六方晶等的结构的遗传材料，例如，氧化物的氧化物的烧结体镍，锌，锰钙等和三价氧化铁。

2. 发明专利

JPS53118051A TONER 失效
公开(公告)号：JPS53118051A
公开(公告)日：1978-10-16
申请号：JP2151277
申请日：1977-03-02
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： KAMOSHITA GENICHI , FUJIWARA HIDEO , NOGUCHI KOUJI , HARADA HIDEKI
IPC分类号： G03G9/08 , G03G9/083
摘要： PURPOSE:To prepare a multicolored toner for electrophotographic copying by dispersing fine dye particles and specified magnetic particles into fine resin particles.

3. 发明专利

JPS60263954A TONER FOR HEAT FIXING 失效
公开(公告)号：JPS60263954A
公开(公告)日：1985-12-27
申请号：JP12148284
申请日：1984-06-13
申请人： HITACHI METALS LTD
发明人： OCHIAI MASAHISA , NOGUCHI KOUJI
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To obtain a toner capable of providing a fixed picture image having high quality with superior resistance to offsetting and superior fixing characteristics by using a mixture comprising a resin, colorant and a parting agent and using a specified polyester resin, styrene/acrylic copolymer, and xylene/formaldehyde resin for the resin. CONSTITUTION:The toner comprises a resin mixture, colorant, and a releasing agent wherein the resin mixture consists of polyester resin comprising diol component and di- or polyvalent carboxylic acid or a deriv. thereof, styrene/acrylic copolymer contg. alpha,beta-unsatd. ethylenic monomer as constituting unit, and xylene/ formaldehyde resin. Since the toner for heat fixing contains polyester resin and styrene/acrylic resin, the resistance to offsetting and the developing characteristic are superior. Further, the melt viscosity is lowered because xylene/formaldehyde resin is incorporated. Therefore, the offsetting resistance and blocking resistance are improved, and the fixing characteristics are improved as well, and fixed picture image of high quality is obtd.

4. 发明专利

JPS60262167A TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS60262167A
公开(公告)日：1985-12-25
申请号：JP11744984
申请日：1984-06-09
申请人： HITACHI METALS LTD
发明人： NOGUCHI KOUJI , OCHIAI MASAHISA
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To improve the offset resistance and to extend the nonoffset temp. range by blending a resin consisting of specified polyester resin, styrene-acrylic resin and epoxy resin with a releasing agent and a coloring agent. CONSTITUTION:Polyester resin (A) is synthesized from diol and di- or polycarboxylic acid or a deriv. thereof. The polyester resin A is blended with a styrene- acrylic copolymer (B) contg. an alpha,beta-unsatd. ethylenic monomer as a structural unit, epoxy resin (C),the releasing agent and the coloring agent, and spray drying, grinding or other method are applied to manufacture a toner for developing an electrostatic charge image. The preferred amount of the resin B is 40-80 pts.wt. per 100pts.wt. resin blend consisting of the resins, A, B, C, and the preferred total amount of the resins A, C is 60-20pts.wt. per 100pts.wt. resin.

5. 发明专利

JPS60247253A ELECTROSTATIC LATENT IMAGE DEVELOPING MAGNETIC TONER 失效
公开(公告)号：JPS60247253A
公开(公告)日：1985-12-06
申请号：JP10349484
申请日：1984-05-22
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI , NOGUCHI KOUJI
IPC分类号： G03G9/083 , G03G9/08 , G03G9/097
摘要： PURPOSE:To enhance image quality by widening size distribution of toner particles changing triboelectrification treatment for giving negative chargeability in accordance with the diameters of the toner particles, and averaging the charge amt. of each toner particle per unit weight. CONSTITUTION:A thermoplastic resin and a colorant are mixed to prepare a toner wide in particle size distribution. The toner is classified into larger and smaller diameter fractions, each is subjected to treatment for giving negative chargeability in conditions different from each other and mixed so as to average a charge amt. of each particle per unit weight. For example, a chargeable fine powder, such as hydrophobic silica, is added to the toner fraction having 10-25mum size distribution in an amt. of 0.3-1wt% of this toner, and a smaller amt. of chargeable powder is added or a less chargeable fine powder, such as alumina, is added to an amt. of smaller diameter toner to adjust each charge amt. of both toner fractions to a same level.

6. 发明专利

JPS60102646A HEAT FIXING TONER 失效
公开(公告)号：JPS60102646A
公开(公告)日：1985-06-06
申请号：JP21051783
申请日：1983-11-09
申请人： HITACHI METALS LTD
发明人： NOGUCHI KOUJI , OCHIAI MASAHISA , KAWANA KENICHI
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To enhance offset resistance and fixing performance by incorporating an electrostatically positively chargeable dye in a mixture of a polyester resin and a styrene-acrylic type copolymer. CONSTITUTION:A heat fixing toner contains a resin, a colorant, and a releasing agent, and the resin consists of a polyester resin composed of polyol components and bivalent or multivalent carboxylic acid or acid deriv. components, and a styrene-acrylic type copolymer composed of alpha,beta-unsatd. ethylenic monomers as structural units, and 0.5-7wt% positively chargeable dye is contained, thus permitting good heat fixing and prevention from offset. Said copolymer, preferably, has a weight average mol.wt. of 50,000-300,000, and a number average mol.wt. of 10,000-50,000, and a mol.wt. distribution of 3-30. Said polyester resin, preferably has a weight average mol.wt. of 5,000-100,000, a number average mol.wt. of 5,000-20,000, and a mol.wt. distribution of 5-20. A preferable mixing ratio of the styrene-acrylic type copolymer to the polyester resin is (30-95):(70-5) by weight.

7. 发明专利

JPS6021054A PRESSURE FIXABLE MAGNETIC TONER 失效
公开(公告)号：JPS6021054A
公开(公告)日：1985-02-02
申请号：JP12802683
申请日：1983-07-15
申请人： HITACHI METALS LTD , MITSUI PETROCHEMICAL IND
发明人： ASANAE MASUMI , NOGUCHI KOUJI , ITOI HIDEYUKI
IPC分类号： G03G9/083 , G03G9/087 , G03G9/097 , G03G9/08
摘要： PURPOSE:To enhance fixability at low pressure and to improve storage stability at high temp. and resistance to blocking due to vibration by using a specified resin compsn. as a resin component. CONSTITUTION:A resin compsn. used as a resin component is composed of oxidized polyolefin wax (POW) having an oxygen content of >=0.05wt% and higher fatty acid amide, and it has >=80 deg.C softening point and compression yielding value. POW of such oxidized POW used for this compsn. may be homopolymers of ethylene and propylene and copolymers of >=2 kinds of olefin monomers, and addition of oxygen to >=0.005wt% enhances transfer efficiency. The used higher fatty acid amide is in the range of 6-50C, and the used fatty acid is of >=12C, such as lauric acid, and it is, preferably, palmitic acid, etc. The use of such a resin compsn. forms a pressure fixable magnetic toner good in fixability at low pressure and storage stability at high temps. and resistance to blocking due to vibration.

8. 发明专利

JPS59210466A Developing method of electrostatic charged image 失效
标题翻译：静电荷图像的发展方法
公开(公告)号：JPS59210466A
公开(公告)日：1984-11-29
申请号：JP8359183
申请日：1983-05-13
申请人： Hitachi Metals Ltd
发明人： GOTOU TAKAHARU , KAWANA KENICHI , NOGUCHI KOUJI
IPC分类号： G03G9/08 , G03G9/083 , G03G13/09 , G03G15/09
CPC分类号： G03G13/09
摘要： PURPOSE:To form an image of high quality even when the control range of toner density is widened by specifying the saturated magnetism and grain size of magnetic carriers and also specifying the electrostatic charging amount of magnetic toner, and rotating a magnet. CONSTITUTION:A permanent magnet member 8 having plural magnetic poles is arranged in a cylindrical sleeve 5; and the sleeve 5 is rotated as shown by an arrow A and the member 8 is rotated as shown by an arrow B. Consequently, a developer in a magnetic brush rotates on its own center, and the brush becomes soft to improve the reproducibility of half tones. The saturated magnetism of magnetic carriers of the used developer 3 is 40-220emu/gr and the grain size is 50-200mum. The magnetic toner consists principally of resin and magnetic powder and its charge amount is >=151muc/g. Consequently, the image formation of high quality is performed even when the control range of toner density is widened.
摘要翻译：目的：即使通过指定磁性载体的饱和磁性和晶粒尺寸并且还指定磁性调色剂的静电充电量并使磁体旋转来调节调色剂浓度的控制范围，也能形成高品质的图像。构成：具有多个磁极的永久磁铁构件8设置在圆筒形套筒5中; 并且套筒5如箭头A所示旋转，并且构件8如箭头B所示旋转。因此，磁刷中的显影剂在其自身的中心旋转，并且刷变软，以提高一半的再现性色调。用过的显影剂3的磁性载体的饱和磁性为40-220emu / gr，粒径为50-200μm。磁性调色剂主要由树脂和磁粉组成，电荷量> 151muc / g。因此，即使当调色剂浓度的控制范围变宽时也执行高质量的图像形成。

9. 发明专利

JPS59121054A MAGNETIC DEVELOPER 失效
公开(公告)号：JPS59121054A
公开(公告)日：1984-07-12
申请号：JP23237182
申请日：1982-12-27
申请人： HITACHI METALS LTD
发明人： NOGUCHI KOUJI , ASANAE MASUMI
IPC分类号： G03G9/08 , G03G9/083 , G03G9/107
摘要： PURPOSE:To maintain image quality and to prevent adhesion of a toner to the surface of a carrier during development without installing a stirring machine in a developing device by using a developer consisting of a ferromagnetic carrier having very small triboelectricity and a toner contg. a binder resin and magnetic particles. CONSTITUTION:A magnetic developer for developing an electrostatic latent image consists of a ferromagnetic carrier small in triboelectricity and a toner contg. a binder resin and magnetic particles. Since the carrier and the toner are not strongly triboelectrified, and the magnetic force of the carrier is stronger than that of the toner, the carrier is held on the magnet roll of a magnetic conveying means, and the toner moves mainly to the side of the electrostatic latent image and develops it.

10. 发明专利

JPS59114547A Pressure-fixable magnetic toner 失效
标题翻译：压力可固定磁铁
公开(公告)号：JPS59114547A
公开(公告)日：1984-07-02
申请号：JP22543482
申请日：1982-12-22
申请人： Hitachi Metals Ltd , Mitsui Petrochem Ind Ltd
发明人： ASANAE MASUMI , NOGUCHI KOUJI , ITOI HIDEYUKI , FUNAKOSHI KATSUMI
IPC分类号： G03G9/08 , G03G9/087
CPC分类号： G03G9/08704 , G03G9/08735 , Y10S430/104
摘要： PURPOSE: To obtain the titled toner having good fixability in low pressure and good storage stability at high temps. by using a polymer composed essentially of methyl-pentene-1 having a softening point not below a specified temp. and a compression yield value of a specified value or less.
CONSTITUTION: A polymer composed essentially of methyl-pentene-1 having a ≥80°C softening point and ≤150kg/cm
2 compression yield value, such as a homopolymer of 4-methyl-pentene-1 3-methyl-pentene-1 or a copolymer of them and other α-olefin, like ethylene, is used for a pressure-fixable magnetic toner composed essentially of at least a resin and a magnetic powder. The obtained pressure-fixable magnetic toner has good fixability in low pressure, and good storage stability at high temps., and it can be used for electrophotography a magnetic printing process, etc.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：获得在低压下具有良好定影性且在高温下具有良好储存稳定性的标题调色剂。通过使用基本上由不低于规定温度的软化点的甲基 - 戊烯-1组成的聚合物。压缩屈服值为规定值以下。构成：主要由具有> = 80℃软化点和<= 150kg / cm 2压缩屈服值的甲基 - 戊烯-1组成的聚合物，例如4-甲基 - 戊烯-1,3-甲基 - 戊烯-1或它们与其它α-烯烃（如乙烯）的共聚物用于基本上至少由树脂和磁性粉末组成的压力可固定的磁性调色剂。所得到的压力可固定磁性调色剂在低压下具有良好的定影性，并且在高温下具有良好的储存稳定性，并且可用于电子照相磁性印刷工艺等。

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