摘要:
A vibrating sieve for classifying a particulate material, including an oscillator comprising a transducer; and at least two meshes layered together and located in contacting relation to a transducer, wherein a lowermost mesh receiving a vibration from the transducer transmits the vibration to an uppermost mesh to classify the particulate material fed thereon.
摘要:
A carrier for forming an electrophotographic image contains a core particle and a coating layer coating the core particle, wherein the coating layer contains a particle containing antimony and an anionic dispersant and the particle containing antimony includes a substrate particle containing a first inorganic fine particle.
摘要:
A developing apparatus includes an electrostatic latent image bearer, a developing sleeve, a case, and an air filter. The case accommodates a two-component developer and the developing sleeve. The air filter is attached to the case. The air filter has a thickness of 2 to 20 mm and has a density gradient with a pressure loss of 2 to 40 Pa at a wind speed of 10 cm/s. The air filter forms an airflow sucked into the case from a gap between the developing sleeve and the case and forms an airflow discharged from the case through the air filter. The two-component developer accommodated in the case contains a magnetic particle a surface of which is coated with a resin layer. The resin layer contains at least one type of chargeable particle.
摘要:
A toner for electrophotography, which contains a binder resin, and a release agent, wherein a maximum value of loss tangent of the toner at 95° C. to 115° C. is 8 or greater, as a viscoelasticity of the toner is measured, where the loss tangent is represented by the following formula: Loss tangent (tan δ)=loss elastic modulus (G″)/storage elastic modulus (G′).
摘要:
A carrier is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a resin, a conductive particle including tungsten tin oxide, and a chargeable filler.
摘要:
A white toner has a first temperature range not less than 25° C. in which 60° glossiness is 10 or less between a fixable minimum temperature and a fixable maximum temperature thereof. The white toner has a second temperature range not less than 25° C. in which 60° glossiness is from 30 to 60 therebetween.
摘要:
A toner is provided. The toner includes a crystalline polyester resin (A); and a non-crystalline resin (B). The toner has a viscoelastic property such that the loss tangent (tan δ) defined as a ratio (G″/G′) of loss elastic modulus (G″) to storage elastic modulus (G′) has at least an inflection point or a local maximal point at a temperature α in a temperature range of from 65° C. to 80° C. while having a local maximal point at a temperature β in a temperature range of from 75° C. to 90° C., wherein the loss tangent at the temperature α is from 1.2 to 2.0, and the loss tangent at the temperature β is from 1.0 to 2.5, wherein the temperature α is lower than the temperature β.
摘要:
An image forming method including steps of forming a latent electrostatic image on an image bearing member, developing the latent electrostatic image with a development agent containing toner to obtain a toner image; transferring the toner image onto a transfer medium; fixing the toner image thereon; wherein the fixing is executed by a fixing device containing a heating roller; a fixing roller; a toner heating medium and the fixing roller; and a pressure roller wherein the toner contains a toner binder containing a crystalline resin containing a polyester resin A; a non-crystalline resin containing a non-crystalline resin B and a non-crystalline resin C, and a complex resin, wherein the toner has a main peak in a range of from 1,000 to 10,000 in the molecule weight distribution as measured for a component soluble in tetrahydrofuran by gel permeation chromatography with a half value width of 15,000 or less.
摘要:
A toner, including: a binder resin; and a colorant, wherein the binder resin contains: a crystalline polyester resin (A); a non-crystalline resin (B); and a composite resin (C), where the composite resin (C) contains a condensation polymerization resin unit and an addition polymerization resin unit, wherein the toner contains chloroform insoluble matter in an amount of 1% by mass to 30% by mass, wherein the toner has a molecular weight distribution having a main peak in a range of 1,000 to 10,000 and a half width of 15,000 or less, where the molecular weight distribution is obtained through gel permeation chromatography (GPC) of tetrahydrofuran soluble matter of the toner, and wherein the toner has an endothermic peak in a range of 90° C. to 130° C. in measurement through differential scanning calorimetry (DSC).
摘要:
An apparatus includes: an image carrier; a charger to uniformly charge a surface of the image carrier; an exposing unit to perform write scanning on the image carrier; a developing unit that includes a developer carrier carrying a developer including a toner and that is configured to perform a visible image process on an electrostatic latent image formed on the image carrier; and a transferor to transfer a toner image that has been subjected to the process onto a material. If length Lg of a non-image part directly before an image part in an image carrier moving direction has the relation of Lg≧π·Ds/(Vs/Vp), where Vp and Vs are circumferential velocities of the image carrier and the developer carrier and Ds is a diameter of the developer carrier, suppression of toner attachment on the material is controlled in a predetermined length from an image front end in the direction.