摘要:
A bone prosthetic material composed of calcium phosphate group granules which have open cells with an average pore size of 0.01-(10 .mu.m).sup.2 over a surface density of at least one per 10 .mu.m.sup.2. The prosthetic material is prepared by mixing organic inflammable particles with a calcium based powder, granulating and then firing the mixture.
摘要:
A support for a biomedical implant device in which the support has a surface layer composed of a biocompatible calcium phosphate material such as sintered hydroxyapatite with a porosity of 50-60% and pore size of 0.5-500 micrometers. Preferably, the surface layer is formed with projections or recesses of a few hundred micrometers size.
摘要:
A support for a biomedical implant device in which the support has a surface layer composed of a biocompatible calcium phosphate material such as sintered hydroxyapatite with a porosity of 50-60% and pore size of 0.5-500 micrometers. Preferably, the surface layer is formed with projections or recesses of a few hundred micrometers size.
摘要:
An implant member is provided with at least one projection on its outer surface. Biological fusion with newly formed bony tissues is facilitated by permitting the projections to establish a small clearance between the implant and the surrounding bone.
摘要:
An upper structure for an artificial apatite dental root is disclosed. The structure includes inner and outer crowns having a buffer element placed therebetween. The buffer element serves as a satisfactory substitute for the periodontal membrane of a natural tooth.
摘要:
A toner for electrostatic charge development is provided where the toner comprises a colorant and a resin and contains an organic boron compound represented by a following chemical formula (A) as a charge controlling agent, further the toner is treated with an inorganic fine particle and at least one of the inorganic particles is a magnesium silicate compound represented by a following general formula [2] is provided. wherein X is an alkali metal, R1, R2, R3 or R4 each represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom. MgxSiyO(x+2y) [2] wherein x and y are integers.
摘要:
The present invention provides a developing device that allows for maintaining the conveyance amount of a toner within a certain definite range. A developing device 12 of the present invention is provided with a toner conveying unit 13 configured to convey a first toner and a controlling member 15 configured to control the thickness of a toner layer formed with the first toner conveyed by the toner conveying unit 13, wherein a second toner provided with a charged amount per unit mass that differs from a charged amount per unit mass of the first toner is applied over the surface of the controlling member 15.
摘要:
To provide a toner containing at least a toner base containing a binder resin and a colorant, and an inorganic fine particle, wherein the inorganic fine particle contains a compound oxide expressed by the following Composition Formula (1): [M1]aSibOc Composition Formula (1) where “M1” represents a metal element selected from Sr, Mg, Zn, Co, Mn and Ce, “a” and “b” each represents an integer of 1 to 9 and “c” represents an integer of 3 to 9, wherein an average primary particle diameter of the compound oxide is 0.02 μm to 1.5 μm, and an average secondary particle diameter of the compound oxide is 0.08 μm to 3.5 μm, where the secondary particle is an aggregate of the primary particles.
摘要:
A developing device is provided including a developer bearing member configured in close proximity to or contacting the surface of the photosensitive member, a developer supplying member arranged in a developer supplying section and configured to supply the surface of the photosensitive member with developer, a developer storing section arranged above the developer supplying section to store the developer, an inlet arranged above the developer supplying member through which developer is transferred from the developer storing section to the developer supplying section, and a developer regulating member configured to regulate the thickness of the developer on the surface of the developer bearing member, wherein no portion of the inlet is overlaps the regulating member in the vertical direction.
摘要:
A toner including toner particles including a binder resin, a colorant and a release agent, and an external additive including a first particulate inorganic material having a formula of MgxSiyOx+2y where each of x and y is an integer, and a number average secondary particle diameter of from 0.02 μm to 2 μm, wherein the first atomic ratio (Mg/Si) s in a surface portion of the first particulate inorganic material is not greater than (preferably less than) the second atomic ratio (Mg/Si)e in the entire first particulate inorganic material. Alternatively, a toner including toner particles including a binder resin and a colorant, and an external additive which includes a particulate inorganic material having a formula of MgxSiyOx+2y where each of x and y is an integer and which has a surface treated with a fatty acid.
摘要翻译:包括调色剂颗粒的调色剂,包括粘合剂树脂,着色剂和脱模剂,以及包含具有下式的第一颗粒无机材料的外部添加剂:具有下式的Mg x Si x + 2y其中x和y各自为整数,数均二次粒径为0.02μm至2μm,其中表面部分中的第一原子比(Mg / Si) 的第一颗粒无机材料在第一颗粒无机材料的整体中不大于(优选小于)第二原子比(Mg / Si)e。 或者,包括包含粘合剂树脂和着色剂的调色剂颗粒的调色剂和包含具有下列化学式的颗粒状无机材料的外部添加剂:具有下列化学式的化合物:具有下式的Mg x Si > x + 2y其中x和y各自是整数,并且具有用脂肪酸处理的表面。