摘要:
A developing apparatus provided with first and second members disposed on an upstream and downstream sides, respectively, and opposed to an image bearing member. When a closest distance between the first developing member and the image bearing member is defined as SD1 (m), and the closest distance between the second developing member and the image bearing member is defined as SD2 (m), and the peak-to-peak voltage of a developing bias applied to the first developing member is defined as V1 (V), and the peak-to-peak voltage of the developing bias applied to the second developing member is defined as V2 (V), and the volume resistivity of the carrier is 1.0×10xΩ·cm, V1/SD1−V2/SD2≦(0.65x−4.5)×106(V/m), 1.2×106≦V1/SD1≦(0.35x+3.5)×106(V/m), (0.30x−1.5)×106≦V2/SD2≦9.0×106(V/m), and 9.0≦X≦13.0 are satisfied.
摘要:
It is an object of the present invention to provide a thermosetting resin composition having satisfactory adhesiveness, good processability, high heat resistance, and excellent dielectric characteristics in the GHz band; and a laminate and a circuit board including the thermosetting resin composition. The present invention provides a thermosetting resin composition including an imide oligomer component (A) containing at least one imide oligomer having a specific structure and an epoxy resin component (B) containing at least one epoxy resin. Furthermore, the present invention provides the thermosetting resin composition further including a polyimide resin component (C).
摘要:
The present invention provides a resin composition comprising a polyimide containing particular dianhydride and diamine, and an epoxy resin. The resin composition can be bonded at a relatively low temperature, has excellent heat resistance, adhesion property, soldering heat resistance and retaining ratio of peeling strength after PCT. By forming a circuit using the polyimide resin sheet or the polyimide resin sheet with metal foil, which comprises the resin composition, according to the semi-additive method, a printed wiring board having a good wiring shape, firm adhesion of circuit and high insulating resistance in the microcircuit space can be obtained.
摘要:
A developing apparatus having a developer carrying member for carrying a developer including toner and carrier to a portion opposed to an image bearing member, a first chamber having the developer carrying member disposed in its opening, a conveying member disposed in the first chamber for conveying the developer in the longitudinal direction of the developer carrying member, a second chamber to which the developer is supplied from the first chamber through a first communicating portion leading to the first chamber and which supplies the developer to a developing chamber through a second communicating portion leading to the first chamber, and an agitating and conveying member disposed in the second chamber and rotatable to agitate and convey the developer, the second chamber and the agitating and conveying member being disposed while inclined so that their second communicating portion side is higher than their first communicating portion side, the first communicating portion side of the first chamber being higher than the first communicating portion side of the second chamber, and a developer is supplied from a supply opening provided in the upper portion of an area of the second chamber to which the developer is supplied from the first communicating portion.
摘要:
In a connector lock structure 1 provided at female and male connectors which can be fitted together, the female connector 2 has an engagement portion 14, and a slide lock member 13 is supported on the male connector 3 so as to move at least in connector-inserting and connector-withdrawing directions. The slide lock member 13 includes a retaining portion 16 for engagement with the engagement portion 14, and urging member 36 for urging the slide lock member 13. When the engagement portion 14 reaches an engagement position where it is engaged with the retaining portion 16 at the time when the female and male connectors are completely fitted together, the slide lock member 13 is automatically moved by the urging member 36, so that the retaining portion 16 is engaged with the engagement portion 14.
摘要:
A press-fit terminal includes a pair of the resilient contacts being swelled outward, and having a deformation space into which the resilient contacts are deformed. The press-fit terminal is electrically connected to a conductive inner wall of a through-hole on a circuit board by pressing the press-fit terminal into the through-hole. The press-fit terminal includes abutting portions on each inner wall of the pair of the resilient contacts. When the abutting portions abut on each other, the abutting portions regulate deformation of the resilient contacts in a narrowing direction to narrow the deformation space. Then inclined walls formed on the abutting portions induce the resilient contacts to slide on the inclined walls in a direction to separate the resilient contacts from each other.
摘要:
The invention encompasses a powder composition with low hygroscopicity, excellent storage stability, easy uniform dispersion of a core substance, a sufficient amount of the core substance, and excellent taste without attachment onto teeth even after addition to chewing gum or tablet confectioneries, which is preferable for use as an agent for giving aroma and flavor or an agent for enhancing aroma and flavor, as well as foods and drinks containing the same. The powder composition is produced by melting a carbohydrate mixture comprising about 30% to 70% by mass of trehalose and a plasticizer under heating, adding a core substance to the resulting molten matter for mixing to obtain a uniform mixture, extruding the uniform mixture while cooling the uniform mixture, for solidification, and cutting or grinding the resulting solid matter. The resulting powder composition is kneaded with for example gum base, powder sugar, corn syrup and the like and is then spread into stick chewing gum.
摘要:
An optical fiber and an optical transmission system are provided which enable a large-volume and long-haul transmission, using light signals having a plurality of wavelengths in a wide range of wavelength bands including 1.31 μm band, 1.45 μm band, 1.55 μm band and 1.58 μm band. The chromatic dispersion of the optical fiber according to the present invention is −20 ps•nm−1•km−3 or more but −3 ps•nm−1•km−1 or less in the whole wavelength range of 1300 nm to 1600 nm. The optical transmission system according to the present invention is also equipped with (1) a plurality of transmitters to transmit light signals having wavelengths in the range of 1300 nm to 1600 nm, (2) an optical fiber of the present invention, and (3) receivers which receive the light signals.
摘要:
An optical fiber composite that can easily have a desired mean transmission property as a whole even after a length of optical fiber is cut off from one end or both ends, a cable comprising the composites, and methods for producing the composite and cable. An optical fiber composite 10 is produced by splicing a first optical fiber 11, a second optical fiber 12, and a third optical fiber 13 in this order. The first optical fiber 11 and the third optical fiber 13 each have a first chromatic dispersion, D1, at the wavelength of a signal-carrying lightwave. The second optical fiber 12 has a second chromatic dispersion, D2, at the wavelength of the signal-carrying lightwave. The third optical fiber has a length, L3, shorter than the length, L1, of the first optical fiber. It is desirable that the ratio L3/L1 be at most 0.1.
摘要:
A terminal fitting is provided, by which the terminal fitting can be securely connected electrically to an electric wire. A pressure-welding terminal as the terminal fitting has a wire connecting part, to which an electric wire is press-fit. The electric wire includes an electrically conductive core wire and an insulating coating. The wire connecting part includes a bottom wall, and first and second pressure-welding members, each of which has a pair of pressure-welding blades arising from the bottom wall. A projection is formed on an end of an inner edge of the blade near to the bottom wall.