摘要:
The invention relates to binder type carrier comprising at least magnetic particles and binder resin having an acid value of 50 mg KOH/g or less and a hydroxyl value of 50 mg KOH/g or less, in which a product of the acid value by the hydroxyl value is within the range of from 1 to 600, which gives a high specific volume resistance of equal or more than 10.sup.13 .OMEGA.cm, and an excellent humidity resistance.
摘要:
The invention relates to binder type carriers comprising at least magnetic particles and binder resin, characterized by that the binder resin has the characteristics of;(a) melting viscosity at 100.degree. C. (.eta..sub.100 (poise));4.5 .ltoreq.log (.eta..sub.100).ltoreq.8.2(b) temperature dependence of melting viscosity; (d.sub..eta. /dT (poise/.degree.K.));1.2.times.10.sup.-2 .ltoreq.-d(log.eta.)/dT.ltoreq.9.5.times.10.sup.-2and(c) softening temperature (Tm) (.degree.C.);95.ltoreq.Tm
摘要:
The present invention provides a carrier coated by a polymer particle layer containing fine magnetic particles around a magnetic core, which may contain an electrical charge controlling agent, and the core may be pre-treated with a coupling reagent; the carrier gives excellent clearness to the copy and durability at repeating use.
摘要:
According to the present invention, the incorporation of polymeric-magnetic coordination complex powder in a toner effects improvements of chargeability, dusting resistance and fixing properties, and the formation of clear color images.
摘要:
This invention relates to carriers for electrophotography comprising a binder component including a binder resin, a polymeric-magnetic coordination complex, and an inorganic magnetic material dispersed in the binder component at the ratio of 100-900 parts by weight to 100 parts by weight of the binder component, which effect the electrical resistance as well as magnetic properties. Carriers of the invention are suitable, in particular, for a copier furnished with a high rotation developing sleeve.
摘要:
The invention disclosed relates to an image forming process. The image forming process which comprises a first step of forming an electrostatic latent image on the surface of a photosensitive member, a second step of developing said latent image with spherical toner particles, a third step of transferring the developed image to a transfer material, a fourth step of depositing irregularly shaped toner particles to the surface of the photosensitive member, and a fifth step of cleaning the surface of the photosensitive member by a cleaning blade.
摘要:
According to the present invention, the incorporation of polymeric-magnetic coordination complex powder in a photoconductive toner effects the production of toners excellent in dispersibility, heat stability, toner film formability and color reproducibility.
摘要:
Black beans B are coated with a mineral layer 1 containing calcium powder and dolomite powder, a dough layer 2 formed by roasting a dough mixture containing flour, and an outside layer 3 formed by solidifying a seasoning mixture containing, for example, soymilk powder and powdered tea with hardened fat or oil. In 30 parts by weight of black beans, from 2 to 5, both inclusive, parts by weight of the calcium powder, from 30 to 45, both inclusive, parts by weight of the dolomite powder, and from 5 to 15, both inclusive, parts by weight of the soymilk powder, are contained.
摘要:
This invention relates to a method of developing electrostatic latent images which comprises the steps of;mixing a developer including toners having a mean particle size of 3 to 20 .mu.m and resin-coated carriers with a large number of pores having a pore size distribution of 0.001 to 3 .mu.m and a mean pore size of 0.1 to 0.5 .mu.m on a surface thereof;applying said developer onto a developing sleeve made of nonmagnetic material and arranged oppositely to an electrostatic latent image-retaining member with a minute gap therebetween;forming a magnetic brush of the developer by the magnetic force of a magnet member having plural poles in the circumferential direction thereof, said magnet member fixedly arranged within the developing sleeve;conveying the developer by a rotation of the developing sleeve to a developing zone where the electrostatic latent image-retaining member is arranged oppositely to the developing sleeve; anddeveloping electrostatic latent images by the toners which are held on the developing sleeve.
摘要:
The present invention provides fine particles comprising core particles and polyolefinic resin layers for composing an electrostatic latent image developer, characterized in that the polyolefinic resin layers are formed by polymerizing olefinic monomers on surfaces of the core particles.