Abstract: The present invention provides an electrostatic image developer comprising a toner and a carrier wherein the toner includes toner particles having an average particle diameter of 3 to 9 .mu.m, a hydrophobic silica microparticles having a BET specific surface area of 40 to 120 m.sup.2 /g, and a hydrophobic titanium compound microparticles having a BET specific surface area of 40 to 250 m.sup.2 /g; and wherein the carrier is a resin coated carrier having a coating layer of a resin. The electrostatic image developer can improve the environmental dependency of charging, power fluidity, resistance to caking of a toner and reduced change in charging with time course to provide an image with an excellent image quality for a long period of time.

Abstract: A safety auxiliary apparatus for an automatic door assembly includes a single door or first and second doors slidable along a predetermined track for selectively opening and closing the doorway, first and second mutually confronting closure faces being defined by said first and second doors or said single door in cooperation with a brace. A casing accommodating therein a light emitting element for emitting a beam for detection of an object and a light receiving element for receiving the beam from the light emitting element is mounted in a longitudinal frame member of the doors or said brace that define respectively said closure faces, so that an optical path can be defined between said closure faces so as to extend from the light emitting element to the light receiving element.

Abstract: The present invention is a method and apparatus for providing slew rate control. The apparatus comprises a first circuit and a second circuit having an output terminal that is coupled to a first end of the first circuit. The second circuit receives a first input signal and a second input signal. The apparatus further comprises a third circuit having an output terminal that is coupled to the first end of the first circuit. The third circuit also receives the first input signal and the second input signal. The first circuit generates an output signal having a predetermined slew rate, where the output signal has a first state when the first and second input signals are in a first state.

Abstract: An electrostatic-image developer which comprises: (i) a toner comprising: (a) toner particles containing carbon black in an amount of from 6 to 8% by weight based on the weight of the toner particles and having a volume-average particle diameter of from 3 to 9 .mu.m; and (b) an external additive; and (ii) a resin-coated carrier having a volume resistivity of from 10.sup.7 to 10.sup.11 .OMEGA..multidot.cm in an electric field of 10.sup.3.8 V/cm and an average particle diameter of from 30 to 60 .mu.m. Also disclosed are a process for forming a black image and a process for forming a full-color image each using the electrostatic-image developer.

Abstract: A toner for electrostatic-image development which comprises toner particles comprising a colorant and a binder resin, the toner particles having a volume-average particle diameter of from 3 to 9 .mu.m and a particle size distribution satisfying the following expressions (1) and (2):D16(v)/D50(v).ltoreq.1.475-0.036.times.D50(v) (1)D50(p)/D84(p).ltoreq.1.45 (2)wherein D16(v) and D50(v) represent, in terms of absolute value, a cumulative 16% diameter (.mu.m) and a cumulative 50% diameter (.mu.m), respectively, of a cumulative volume particle diameter distribution of the toner particles depicted from the larger diameter side, and D50(p) and D84(p) represent, in terms of absolute value, a cumulative 50% diameter (.mu.m) and a cumulative 84% diameter (.mu.m), respectively, of a cumulative population particle diameter distribution of the toner particles depicted from the larger diameter side.

Abstract: The toner for full-color image formation of the invention comprises a binder resin and a colorant, wherein the toner has a volume-average particle diameter of from 3.0 to 9.0 .mu.m and satisfies relationship (1) between the volume-average particle diameter and a colorant content thereof:11.0/R.ltoreq.C.ltoreq.21.5/R (1)wherein R is 1/2 of the volume-average particle diameter of the toner (.mu.m) and C is the colorant content of the toner (wt %).This toner for full-color image formation is used to conduct development in such a manner that the toner amount transferred to the receiving paper satisfies relationship (2):0.116R.ltoreq.TMA.ltoreq..ltoreq.0.0223R (2)wherein R is 1/2 of the volume-average particle diameter of the toner (.mu.m) and TMA is the weight of the toner (mg/cm.sup.2) transferred to the receiving paper in a monochromatic solid part thereof.

Abstract: A power source apparatus distributes a current command value to be supplied to a load to a plurality of output current amplifiers connected in parallel with the load, and each of the output current amplifiers supplies an output current corresponding to the current command value so distributed. This power source apparatus prevents a circulating current between the output current amplifiers by controlling each output current amplifier so that the difference between the output current from each output current amplifier and the distributed current command value becomes zero, or by inserting current limiting devices into the output line of each output current amplifier.

Abstract: A power tool having a detachable arrangement of an auxiliary handle relative to a main body. The main body has a handle receiving portion. The auxiliary handle has a grip portion and an insertion portion engageable with the handle receiving portion. The insertion portion extends from the grip portion and includes an upper flat surface provided with a protrusion, and a lower arcuate surface. The insertion portion also includes a resilient latch. The receiving portion is provided by a hole having a top flat surface, a lower flat surface and a bottom surface. The top flat surface is formed with an indentation engageable with the protrusion. The base end of the arcuate surface is engageable with the lower flat surface. The lower flat surface is formed with a further recess with which the resilient latch is engageable.

Abstract: An apparatus for mounting a plate on a plate cylinder includes a plate lockup device, reference pins, and a lamp. The plate lockup device is provided in a gap formed in the circumference surface of the plate cylinder. The reference pins are electrically rendered conductive by an insertion end of a plate inserted to a gripper surface of the plate lockup device, thereby detecting insertion of the plate. The lamp confirms and indicates insertion of the plate from an output from the reference pins.

Abstract: A carrier for developing an electrostatic latent image, which carrier comprises core particles having formed thereon a resin coating layer, in which the resin coating layer comprises a fluorine-containing resin and a second resin having a softening point lower than that of the fluorine-containing resin, and the resin and the second resin each are partially exposed on the surface of said resin coating layer. The carrier may be produced by a process comprising the steps of: dry-blending core particles, a fluorine-containing resin, and a second resin having a softening point lower than that of said fluorine-containing resin; and melting the resin blend to coat said core particles. The carrier is excellent in stability with time and environmental changes, causes no adhesion, and is less consumed.