Abstract:
A remanufacturing method for a process cartridge includes (a) separating a process cartridge into a lower frame member and an upper frame, (b) dismounting the photosensitive drum from the lower frame member, (c) dismounting the developing roller from the lower frame member, (d) sticking magnetic seals on the lower frame member, (e) sticking a blade elastic member at each of one and the other longitudinal ends of the developing blade, (f) mounting the developing roller onto the lower frame member, (g) mounting the photosensitive drum to the lower frame member, (h) refilling the developer into the developer accommodating portion in the upper frame, and (i) connecting an upper frame into which the developer has been refilled with a lower frame member.
Abstract:
A remanufacturing method for a process cartridge includes (a) a step of separating a first unit and a second unit from each other; (b) a step of dismounting a developing roller mounted to the second unit which has been separated by the separation step; (c) a step of mounting an addition seal along an original seal having been mounted to a developing frame along a longitudinal direction of a developing roller frame to prevent leakage of developer through between the developing roller and the developing roller frame; (d) a step of refilling the developer into a developer accommodating portion of the second unit which has been separated by the separation step; (e) a step of remounting the developing roller to the second unit which has been separated by the separation step; and (f) a unit re-coupling step of recoupling the first unit and the second unit with each other.
Abstract:
A process for producing a toner comprises the steps of: adjusting to 4.0 to 6.0 the pH of an aqueous medium containing a calcium phosphates obtained by mixing an aqueous phosphate solution with an aqueous calcium salt solution; dispersing in the aqueous medium a polymerizable monomer composition having at least a polymerizable monomer, a colorant, a polar polymer or polar copolymer having a carboxyl group, and a polymerization initiator to form particles of the polymerizable monomer composition; in the aqueous medium, polymerizing the polymerizable monomer contained in the particles to form toner particles; and adjusting the pH of the aqueous medium to 1.0 to 3.0 to dissolve the calcium phosphate, followed by separating the toner particles from the aqueous medium. The circularity of the toner obtained is not less than 0.970 and less than 1.000 as measured with a flow-type particle image analyzer (FIPA).
Abstract:
A process for producing a toner for developing an electrostatic latent image. The process has the steps of dispersing in an aqueous medium having a pH of from 4.5 to 8.5 a polymerizable monomer composition containing at least a polymerizable vinyl monomer, a colorant, an organic metal compound, an aromatic carboxylic acid, a polyester resin having an acid value of from 5 mg.multidot.KOH/g to 50 mg.multidot.KOH/g, and a polymerization initiator, to form particles of the polymerizable monomer composition in the aqueous medium, and polymerizing the polymerizable vinyl monomer in the particles of the polymerizable monomer composition.
Abstract:
A superconducting magnet is arranged in a helium tank, and the superconducting magnet cooled to a very low temperature by liquid helium in the helium tank is connected to a power source kept at room temperature by a current lead and a current lead. The current leads are constituted by conductors made of copper or a copper alloy having a residual resistivity of 5.times.10.sup.-8 .OMEGA..multidot.m or more. In a helium tank, a persistent current switch, cooled by liquid helium, for connecting the conductor to the conductor, is arranged. The persistent current switch magnetizes the superconducting magnet to a persistent current mode and demagnetizes it from the persistent current mode. The helium tank is arranged in a vacuum housing.
Abstract:
A magnetic dry developer, comprising negatively chargeable insulating magnetic toner particles containing, at least, a binder resin, a magnetic substance, and an organo-chromium or -zinc complex; cerium oxide particles containing CeO.sub.2 as a predominant component and having a volume average particle size of 1.0 to 4.0 microns, a heating loss of 0.5 wt. % or less on heating up to 100.degree. C. and a BET specific surface area of 15 m.sup.2 /g or less as measured by the nitrogen adsorption method; and hydrophobicity-imparted negatively chargeable silicon oxide particulates. The cerium oxide particles have a function of disintegrating particularly the hydrophobicity-imparted silicon oxide particulates and enhance the attachment thereof to the toner particles, whereby the developing characteristics including the magnetic triboelectric chargeability are stabilized from the initial stage of electrophotographic copying operation.
Abstract:
A magnetic refrigerator includes a plurality of working substances each of which, when it is within a magnetic field, generates heat and, when it is outside the magnetic field, absorbs the heat to permit a gas to be condensed on the outer surface of the working substance. The working substance has even surfaces and an uneven surface formed on said outer surface thereof. A heat elimination system which, only when the working substance is within the magnetic field, contacts the even surfaces of the working substance to take the heat from the working substance, is provided.
Abstract:
A magnetic refrigerating apparatus comprises two pairs of superconductive coils for generating magnetic fields, a tank for receiving helium to be cooled, and a pair of heat absorbers each including a working substance adapted to generate heat when located inside the magnetic field generated by the coils and to absorb heat when located outside the magnetic field. The heat absorbers are alternately transferred between a first position where either of the heat absorbers is located inside the magnetic field and a second position where the heat absorber is located outside the magnetic field so that one of the heat absorbers is in the first position when the other is in the second position, whereby helium is cooled by either of the heat absorbers when the heat absorber is in the second position. The heat absorbers each include working substance pieces arranged at regular intervals along the direction of transfer thereof, and adiabatic spacers each interposed adjacent pieces to prevent direct contact between the pieces.
Abstract:
Devices, methods and systems are disclosed herein to describe the wettability characteristics of the material forming a bonding area, a non-bonding area, and a melted bonding material. The melted bonding material may have a high degree of cohesion and may result in a very high contact angle (e.g., between 90°- 180°) in the non-bonding area thereby preventing or limiting the flow of a melted material into the non-bonding area, which often results when the melted bonding material forms a low contact angle (e.g., between 0°-90°) in the bonding area. In other words, by choosing a material for the non-bonding area to have low wettability characteristics when compared to the melted materials of the bonding area or by treating the material forming the non-bonding area to have much lower wettability characteristics, the melted materials of the bonding area may be prevented from flowing into the non-bonding area.
Abstract:
An apparatus (CVD apparatus (1)) having a reaction chamber (3) for accommodating a substrate (2) formed with a metal catalyst film and means (gas supply pipes (5, 6)) for supplying a feedstock gas (9) and a catalyst activating material (10) into the reaction chamber (3) for manufacturing CNTs aligned in a direction perpendicular to the catalyst film surface (2a) of the substrate (2), wherein the means for supplying the feedstock gas (9) and the catalyst activating material (10) have a plurality of ejection holes placed at positions facing the catalyst film surface (2a) of the substrate (2), and the ejecting direction of the ejection holes is adjusted to the direction of alignment of CNTs grown from the metal catalyst film. This can provide a manufacturing technology for CNTs capable of mass-producing aligned CNTs at lower cost.