摘要:
A toner for developing electrostatic images is provided which has good adhesion resistance and good low temperature fixing property, and further can exhibit good image developing performance in various quality aspects including fog resistance, filming resistance, and image density. The toner includes at least a binder resin and a colorant and is characterized in that the toner, prepared as such, has a melt index range of 15 to 40 (g/10 minutes) at 125.degree. C. and the binder resin has a melt index range of 3 to 12 (g/10 minutes) at 150.degree. C.
摘要:
A development system that contains a developer carrier for carrying a developer on the surface thereof to a development region opposite to an image bearing body, and a regulating member biased into contact with the surface of the developer carrier by a predetermined pressure for regulating an amount of developer carried by a developer transport member. The developer carrier has a surface coated with fine particles with an average particles size of between 3 and 30 .mu.m which are bonded with the surface.
摘要:
A monocomponent developer comprising a binder resin, a colorant and first and second offset preventing agents, wherein a softening point of said binder resin (Tm.sub.1), that of said first offset preventing agent (Tm.sub.2) and that of said second offset preventing agent (Tm.sub.3) satisfies relationship;Tm.sub.2
摘要:
The present invention relates to a process for preparing a toner for electrophotography, which comprises at least the steps of: providing a toner composition solution by mixing a binder resin, a colorant, a charge-control agent and an organic solvent; mixing the resulting toner composition solution with a dispersion solution containing a dispersing agent by utilizing a collision shearing force of beads or using a colloid mill method, thereby obtaining an O/W type emulsion; heating the resulting emulsion so as to eliminate said organic solvent; and obtaining a toner by washing and drying precipitated particles, wherein a viscosity .eta..sub.Z of the toner composition solution and a viscosity .eta..sub.B of the dispersion solution satisfies a specified the relationship between .eta..sub.A and .eta..sub.B.
摘要:
The present invention provides a cleaning solution for recycling a waste copy paper with toner-images formed on the surface of the copy paper, comprising water, a monoester of bivalent organic acid, a surface active agent and an organic acid.
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.
摘要:
The present invention provides a polyolefinic resin-coated carrier having a rough surface and containing a core material in a quantity of 90 or more % by weight. Said resin-coated layer may contain fine particles having a charge-controlling function and/or electrically conductive fine particles as additives.
摘要:
In an electrostatic latent image developing toner which comprises spherical core particles composed of at least a coloring agent and a thermoplastic resin and an outer shell layer containing at least a thermoplastic resin and applied in the form of a coating fast to the core particles, the outer shell layer applied in the form of a coating is formed by (a) thermally fixing minute particles of one thermoplastic resin and minute particles of another thermoplastic resin on the surface of the core particles thereby enabling part of the aforementioned other thermoplastic resin to retain the original particulate form thereof intact in the produced coating or (b) thermally fixing minute particles of a thermoplastic resin and minute particles of a thermosetting resin or minute particles of a resin possessing a gelling component in a specific amount on the surface of the core particles thereby enabling the minute particles of the resin to retain the original particulate form thereon intact in the produced coating and impart a minutely rugged surface to the coating.
摘要:
An apparatus for regenerating a recording medium has a feeder which feeds a recording medium, a transporter which transports the recording medium, an immersion bath for containing a cleaning liquid for swelling prints and immersing the recording medium in the cleaning liquid, a print remover which removes the prints by subjecting the surface of the recording medium to a physical treatment, and a fluidizing structure for fluidizing the cleaning liquid in a direction opposite to a direction in which the recording medium is transported in the immersion bath.
摘要:
The present invention relates to a cleaning liquid which is used for removing an image forming material containing a resin component from surface of a recording medium on which an image is formed by the image forming material in order to permit the recording medium serviceable again as a recording medium, characterized by comprising water, a gelatinizer or a swelling agent which is compatible with water and gelatinizes the resin component of the image forming material, and an enzyme.