摘要:
The present invention provides a binder carrier containing at least a magnetic particle and a binder resin, in which the binder resin comprises at least a copolymer containing an ethylenic unsaturated nitrile and preferably an optional silicone-modified acrylic resin.
摘要:
A development method comprising the steps of forming a layer of a developer comprising a toner and a magnetic carrier on a developer transporting member containing a magnet therein by means of a developer regulating member, transporting the developer layer on the developer transporting member to a development region where the developer transporting member opposes an image bearing member, and applying an oscillating electric field to the development region for supplying the toner from the developer layer to the image bearing member, thereby developing an image. The magnetic carrier comprises a magnetic powder dispersed in a binder resin having an acid value of 0 to 20 KOHmg/g and has 5 to 30 wt % of magnetic powder present on the surface thereof.
摘要:
A two-component developing agent which is made from at least a carrier and a toner, characterized in that bulk specific density (AD.sub.1) of the carrier is set at 1.07 to 1.43 g/cc, bulk specific density (AD.sub.2) of the developing agent is set at 0.83 to 1.16 g/cc and AD.sub.2 /AD.sub.1 is set at 0.69 to 0.91. The present invention includes an image-forming method and an image-forming system, in which the above two-component developing agent is used.
摘要:
The present invention relates to a binder carrier comprising at least magnetic particles and a binder resin. The binder resin contains a thermoplastic silicone-modified acrylic resin which is a copolymer of a polydiorgano-siloxane macromer having an acrylic functional group and a radical-polymerizable organic monomer.The binder carrier of the present invention a long-life binder carrier which eliminates the possibility of carrier deterioration due to toner components, such as a charge-controlling agent and an after-treatment agent, and which is less liable to deteriorate in its chargeability.
摘要:
A carrier having a BET specific surface area of 0.50 to 2.00 m2 and a dynamic current value of 15 to 170 nA and a two-component developer comprising such a carrier and toner.
摘要:
The present invention relates to a binder carrier, comprising at least magnetic particles and a binder resin, characterized in that the binder resin comprises a thermoplastic silicone-modified acrylic resin and an amino-group-containing resin. The binder carrier is capable of preventing carrier degradation caused by toner ingredients such as a charge-control agent and a post-processing agent for the toner. The binder carrier of the present invention has a long life with less susceptibility to degradation in charging performance, and makes it possible to quickly charge the toner sufficiently.
摘要:
A developing method for developing electrostatic latent images comprising: (a) forming a thin layer of a developer comprising a toner and a carrier on a developer transporting member having a magnet therein by contacting the developer with a developer regulating member, wherein said carrier has a volume-average particle size of 10 to 50 .mu.m and a residual magnetization of 10 emu/g or less, and wherein an amount of said thin layer of developer is in the range of 0.7 to 10.0 mg/cm.sup.2 ; (b) transporting the thin layer to a developing region in which the developer transporting member confronts an image bearing member; and (c) supplying the toner contained in the developer from the developer transporting member to the image bearing member with applying an oscillated electric field on the developing region.
摘要翻译:一种用于显影静电潜像的显影方法,包括:(a)通过使显影剂与显影剂调节构件接触,在具有磁体的显影剂传送构件上形成包含调色剂和载体的显影剂的薄层,其中所述载体具有 体积平均粒径为10〜50μm,剩余磁化强度为10emu / g以下,其中所述显影剂薄层的量在0.7〜10.0mg / cm 2的范围内; (b)将薄层传送到显影剂传送构件面对图像承载部件的显影区域; 和(c)在显影区域上施加振荡的电场,将显影剂中所含的调色剂从显影剂传送构件供应到图像承载部件。
摘要:
The present invention relates a carrier comprising: a core particle comprising a binder resin and a first magnetic powder dispersed therein; and a second magnetic powder adhered onto the surface of the core particle, said second magnetic powder having a relative surface area larger than that of the first magnetic powder.
摘要:
Carrier particles for electrostatic latent image development comprising first particles comprising a binder resin and a magnetic powder dispersed therein and second particles comprising a binder resin and a magnetic powder dispersed therein, said second particles having an average particle size smaller than said first particles, said magnetic powder contained in the first particles has a residual magnetization smaller than that of said magnetic powder contained in the second particles.
摘要:
A carrier for electrostatic latent image developing for use in methods of developing an electrostatic latent image formed on the surface of a latent image-bearing member by transporting a developer comprising a toner and a carrier via the rotation of a developing sleeve having a built in stationary magnet roller, the carrier for electrostatic latent image developing including magnetic powder dispersed in a binder resin and having a saturation magnetization of about 50 to about 80 emu/g, residual magnetization of about 3 to about 10 emu/g, and coercive force of about 20 to about 50 oersted.