摘要:
Provided is a toner including a binder resin, a release agent, and a charge-controlling agent, wherein the toner includes toner particles having particle diameters of 3 micrometers or smaller, among the toner particles having particle diameters of 3 micrometers or smaller, a proportion of the toner particles having an average circularity of 0.70 or greater but 0.85 or less in all of the toner particles is 10% by number or greater but less than 20% by number and a proportion of the toner particles having an average circularity of less than 0.70 in all of the toner particles is 10% by number or less.
摘要:
Toner contains a mother toner particle containing a binder resin and a coloring agent and an external additive to cover the mother toner particle, wherein the external additive contains a resin particle, wherein the resin particle has an outer shell layer formed of silica or modified silica, wherein the resin particle has a non-spherical form with a shape factor (SF) of 1.20 or greater as calculated by the following relationship 1, Shape factor(SF)=[(Absolute maximum length of particle)2/Projected area of particle)]×(π/4) Relation 1.
摘要:
A toner for use in developing an electrostatic latent image is provided. The toner includes a colored particulate material including at least a binder resin and a colorant; and an external additive present on a surface of the colored particulate material and including a particulate crystalline hydroxyapatite. The particulate crystalline hydroxyapatite has an average aspect ratio of not less than 3 and less than 30.
摘要:
In a battery including a battery cell formed in a flattened substantially parallelepiped shape and a terminal contacting section electrically connected to the battery cell, at one end in the longitudinal direction of a face of the battery opposing to the face on which the terminal contacting section is provided, a projecting portion which projects in the longitudinal direction of the face is provided. Meanwhile, another projecting portion which projects in the longitudinal direction of the face is provided at the other end. The projecting portions may have projecting lengths different from each other or may have projecting lengths and projecting thicknesses different from each other. A charging apparatus into which the battery is to be installed includes an accommodating section for the battery which in turn includes projection accommodating portions configured to individually accommodate the projecting portions.
摘要:
A toner producing method is provided, which comprises preparing toner base particles in an aqueous medium, wherein the toner base particles comprise resin fine particles, and forming a coating layer on the surface of the toner base particles, wherein the coating layer is formed by attaching or coating a toner functional substance onto the surface of the toner base particles using at least one of supercritical fluids and sub-supercritical fluids.
摘要:
To provide a toner production process in which at least radically polymerizable monomers are polymerized in at least one of a supercritical fluid and a subcritical fluid to thereby produce toner particles, wherein a polymer of the radically polymerizable monomers is insoluble in at least one of the supercritical fluid and the subcritical fluid.
摘要:
An IC card reader includes contactors contacting to IC contact points of the IC card, a frame forming with a card insertion path into which the IC card is inserted and a retraction domain for retracting the contactors in a direction away from the insertion path, a plate spring biasing the contactors to the retraction domain, and a mechanism responsive to the insertion of the IC card, advancing the contactors into the insertion path with the plate spring deflected to make contact the contactors to the IC contact points of the IC card, and responsive to extraction of the IC card and retracting the contactors to the retraction domain with the plate spring released force of the plate spring, becoming difficult for deformation and damage of the contactors.
摘要:
To provide a toner that can provide long-term removability and high-definition images with reduced image layer thickness and densely-packed toner particles, a developer capable of forming high-quality images using the toner, a toner container for containing the toner, a process cartridge using the toner, an image forming apparatus using the toner, and an image forming method using the toner. The toner of the present invention is a toner having a substantially spherical shape with irregularities on its surface and containing at least a binder resin and a colorant, wherein a surface factor SF-1 that represents the sphericity of toner particles is 105 to 180, a surface factor SF-2 that represents the degree of surface irregularities of the toner particles is correlated with the volume-average diameter of the toner particles, and the toner particles have an inorganic oxide particle-containing layer within 1 μm from their surfaces.
摘要:
The object of the present invention is to provide a toner which has sufficiently high chargeability and less toner spent to a carrier or the like even when several tens of thousands of image sheets are output, is capable of keeping high-charge property and flowability without causing substantial background smear or toner fogging, excels in low-temperature fixing property and hot-offset property, and has a wide range of fixing temperature as well as to provide a developer, an image forming apparatus, a process cartridge, and an image forming method using the toner for developing electrostatic images. The toner of the present invention comprises a colorant, and a resin, and a fluoride compound, in which the fluoride compound exists on the surfaces of toner particles, and the atomic number ratio (F/C) of fluoride atoms to carbon atoms existing on the surfaces of the toner particles is 0.010 to 0.054.
摘要:
The object of the present invention is to provide a developer having a sharp charge amount distribution and bringing out high-quality image without substantially smearing a charging unit, developing units, a photoconductor, and an intermediate transferring member by the developer, namely, a developer capable of providing an appropriate image density and exhibiting extremely little background smear even when used over a long period of time and repeatedly used for a number of sheets of paper as well as to provide an image forming apparatus for electrophotography using the developer.