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121. 发明专利

JPS62175765A DEVELOPING METHOD FOR ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS62175765A
公开(公告)日：1987-08-01
申请号：JP1731686
申请日：1986-01-29
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI , KUMAKURA TOSHIO
IPC分类号： G03G13/09 , G03G15/09
摘要： PURPOSE:To obviate the decrease of an image density even after long-period development by periodically replenishing an iron oxide carrier to a magnetic toner at a prescribed mixing ratio. CONSTITUTION:The iron oxide carrier and magnetic toner are periodically replenished at 1/25-1/5 (iron oxide carrier)/(magnetic toner) in the development of an electrostatic charge image in which the electrostatic charge image formed on the surface of a photosensitive body is developed by a magnetic brush method using a developer prepd. by mixing the iron oxide carrier and magnetic toner. The characteristics of the developer are thereby stabilized and the height of the magnetic brush is maintained even after the long-period continuous operation and therefore, the image having high quality is obtd. without the decrease of the image density.

122. 发明专利

JPS62100772A DEVELOPER FOR HEAT ROLL FIXING 失效
公开(公告)号：JPS62100772A
公开(公告)日：1987-05-11
申请号：JP24230785
申请日：1985-10-29
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To obtain an image having high quality without the injury on the surface of a photosensitive layer by consisting a titled developer of a magnetic carrier and magnetic toner essentially consisting of a non-linear polyester resin of which the melt viscosity at 180 deg.C is in a 10 -10 poise range. CONSTITUTION:This developer for developing electrostatic charge images consists of the magnetic carrier and the magnetic toner essentially consisting of the non-linear polyester resin of which the melt viscosity at 180 deg.C is in the 10 -10 range and magnetic powder. The non-linear polyester resin having 100-150 deg.C softening point and >=50 deg.C glass transition point is preferable in terms of fixability, offset resistance and shelf life. The non-linear polyester resin of which the melt viscosity at 180 deg.C is in the 10 -10 range is preferably used. The resin is liable to be pulverized and therefore the toner surfaces are not made round if the melt viscosity is poise. On the other hand, kneading is difficult and the shelf stability is lower if the melt viscosity exceeds 10 poise.

123. 发明专利

JPS60262169A TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS60262169A
公开(公告)日：1985-12-25
申请号：JP11745184
申请日：1984-06-09
申请人： HITACHI METALS LTD
发明人： NOGUCHI KOUJI , OCHIAI MASAHISA , ASANAE MASUMI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097
摘要： PURPOSE:To extend the nonoffset temp. range by adding a releasing agent and a coloring agent to a resin consisting of polyester resin contg. a titanium coupling agent and a styrene-acrylic copolymer. CONSTITUTION:The styrene-acrylic copolymer (A) is blended with polyester resin (B) and a titanium coupling agent. The releasing agent and the coloring agent are added to the blend, and spray drying, grinding or other method are applied to manufactur a toner for developing an electrostatic charge image. The preferred weight ratio between the copolymer A and the resin B (A:B) is (10- 90):(90-10), and the weight ratio is preferably regulated to (30-80):(70-20) so as to prevent restain with vinyl chloride. The preferred amount of the coupling agent added is 0.1-5pts.wt. per 100pts.wt. other components. Aliphatic resin having 1,000-10,000 average mol.wt. is preferably used as the releasing agent.

124. 发明专利

JPS60220359A TONER FOR DEVELOPMENT OF ELECTROSTATIC LATENT IMAGE 失效
公开(公告)号：JPS60220359A
公开(公告)日：1985-11-05
申请号：JP7734084
申请日：1984-04-17
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI , NOGUCHI KOUJI
IPC分类号： G03G9/08 , G03G9/09 , G03G9/097
摘要： PURPOSE:To obtain stable pictures even in case of continuous copies by subjecting the surface of toner particles relatively large in size to a prescribed insulating processing and making the insulating property of surfaces of toner particles having a relatively small particle size lower than that of said toner particles to develop both toners uniformly. CONSTITUTION:A fine hydrophobic powder is added to the toner having a large particle size out of toners having prescribed particle size distributions, and the quantity of charging of this toner is so adjusted that it is matched to a system. For the purpose of making the quantity of charging of the classified toner having a small particle size equal to or slightly larger than that of said toner having a large particle size, the quantity of the added silica is reduced or the quantity of added fine alumina powder having a low charging property is reduced or a conductive fine powder such as carbon black or the like is added. Two kinds of toner which are processed in this manner are mixed to average the quantity of charging per unit weight of individual particles.

125. 发明专利

JPS60188962A Formation of image 失效
标题翻译：形成图像
公开(公告)号：JPS60188962A
公开(公告)日：1985-09-26
申请号：JP4397584
申请日：1984-03-09
申请人： Hitachi Metals Ltd
发明人： ASANAE MASUMI
IPC分类号： G03G13/16 , G03G15/16
CPC分类号： G03G15/1695
摘要： PURPOSE:To obtain an image of high quality even under low humidity by bringing an electric member into contact with the reverse side of a transfer sheet to reduce an amt. of electrostatic charge when humidity is low, and then, transferring a toner image on the sheet. CONSTITUTION:An electrode 8 is moved up and down by a means driven in accordance with a signal delivered from a humidity sensor, not illustratrate here, and when humidity drops below a set value, it is allowed to touch the reverse side of the transfer sheet 6. Transfer voltage is set so as to achieve the max. transfer efficiency under the atmosphere of high temp. and high humidity, such as 35 deg.C 80% RH, and when humidity drops to, e.g., 60% RH, or lower, the electrode 8 touches the sheet 6. An amt. of charge of the sheet 6 raised due to low humidity is lowered by the contact of the electrode 8, thus permitting a charge amt. of the sheet 6 even under low humidity to be lowered to an extent same as the case of high humidity, and deterioration of transfer efficiency to be prevented.
摘要翻译：目的：即使在低湿度下，通过使电气部件与转印纸的背面接触来获得高质量的图像，从而减小了转印纸张的张力。当湿度低时，静电荷，然后转印在片材上的调色剂图像。构成：电极8通过根据从湿度传感器传递的信号驱动的装置上下移动，这里不说明，当湿度低于设定值时，允许接触转印纸的背面转换电压设定为达到最大值。高温气氛下的转移效率。和高湿度，例如35℃，80％RH，并且当湿度降至例如60％RH或更低时，电极8接触片材6。由于低湿度而升高的片材6的电荷通过电极8的接触而降低，从而允许电荷。的片材6即使在低湿度下也能够降低到与高湿度情况相同的程度，并且可以防止转印效率的劣化。

126. 发明专利

JPS60166957A DEVELOPER OF ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS60166957A
公开(公告)日：1985-08-30
申请号：JP18686883
申请日：1983-10-07
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To prevent the surface of a photosensitive body from being attached and damaged in a developer for an electrostatic charge image made of toner paticles contg. a resin, and a magnetic powder by incorporating a fluororesin powder in the inside of each toner particle and/or attaching the powder on its surface. CONSTITUTION:An intended developer for an electrostatic charge image is obtained by kneading a resin, as ethylene-vinyl acetate copolymer, a magnetic powder, such as ferrite or magnetite, and when needed, a colorant, such as nigrosine dye, and pulverizing them to prepare toner particles, and mixing them with a powder of a flulroresin, preferably such as ethylenetetrafluoroethylene copolymer or polyvinyl fluoride, to bond said powder to the surface of the toner particles. The fluororesin powder may be incorporated into the inside of the toner particles.

127. 发明专利

JPS6088961A POSITIVE CHARGE TYPE MAGNETIC TONER FOR HEAT ROLL FIXING 失效
公开(公告)号：JPS6088961A
公开(公告)日：1985-05-18
申请号：JP19706783
申请日：1983-10-21
申请人： HITACHI METALS LTD
发明人： KAWANISHI TSUNEAKI , SHIMIZU RIYUUICHI , MORI YASUKI , NOGUCHI KOUJI , ASANAE MASUMI
IPC分类号： G03G9/083 , G03G9/087 , G03G9/097
摘要： PURPOSE:To improve positive chargeability of a magnetic toner and to enable all types of heat roll fixing by constituting a toner of a thermoplastic resin, magnetic powder and nigrosine dye and adding a partly crosslinked styrene-butadiene copolymer, amide wax or ethylene bis-fatty acid amide and low mol.wt. PP thereto. CONSTITUTION:An alpha-methylene aliphat. monocarboxylic acid alkyl ester copolymer contg. methyl methacrylate as an essential component is most preferred for positive chargeability of a toner. A partly crosslinked styrene/butadiene copolymer having about 50,000-100,000mol.wt. and about 10-50wt% gel content is effective as the resin having a releasing characteristics A better effect is obtd. if amide wax having the m.p. ranging 140-150 deg.C or ethylene bis-fatty acid amide and PP having

128. 发明专利

JPS6079363A DEVELOPER FOR ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS6079363A
公开(公告)日：1985-05-07
申请号：JP18686683
申请日：1983-10-07
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI
IPC分类号： G03G9/08 , G03G9/087
摘要： PURPOSE:To prevent the sticking of a toner to the surface of a photosensitive body by mixing the toner particles contg. a resin causing plastic deformation under a prescribed pressure, colorants and polyvinylidene fluoride with polyvinylidene fluoride powder. CONSTITUTION:When a fixing system applied is a pressure fixing system, a pressure sensitive resin or a resin mixture having >40 deg.C glass transition point is used as a resin for fixing. The amount of the resin for fixing contained in a toner is >=35wt% of the total amount of the toner, and the amount of a pigment for color control and a dye is

129. 发明专利

JPS6079361A TONER FOR ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPS6079361A
公开(公告)日：1985-05-07
申请号：JP18686483
申请日：1983-10-07
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI , NOGUCHI KOUJI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PURPOSE:To prevent the sticking of a toner to the surface of a photosensitive body by fixing polyvinylidene fluoride powder on the surfaces of the toner particles contg. a resin and colorants. CONSTITUTION:When a fixing system applied is a heat oven system or a heat roll system, a thermoplastic resin or a resin mixture having >40 deg.C glass transition point is used as a resin contained in toner particles. When the fixing system is a pressure fixing system, a pressure sensitive resin or a resin mixture having >40 deg.C glass transition point is used. The amount of the resin for fixing contained in the toner is >=35wt% of the total amount of the toner. The amount of a pigment for color control and a dye is

130. 发明专利

JPS6026954A MAGNETIC TONER FOR USE IN COLOR IMAGE 失效
公开(公告)号：JPS6026954A
公开(公告)日：1985-02-09
申请号：JP13427883
申请日：1983-07-25
申请人： HITACHI METALS LTD
发明人： ASANAE MASUMI
IPC分类号： G03G9/083 , G03G9/09 , G03G9/08
摘要： PURPOSE:To enhance the hue of a color image by coating the surface of a magnetic powder for use in a color image with a colorant using a coupling agent. CONSTITUTION:The surface of a magnetic powder is coated with a colorant using a coupling agent to form a magnetic toner for use in a clor image contg. a resin, a magnetic powder, and a colorant. As the magnetic powder, black and brown magnetic powders and also alloys and compds. contg. a ferromagnetic element, such as Fe, Co, or Ni, can be used. Various kinds of dyes and pigments can be used for the colorant. Since the clorant is fixed to the surface of the magnetic powder with the coupling agent, the hue of a color image can be improved.

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