摘要:
An object of the invention is to facilitate the design of a developing apparatus by making it easier to set the optimal developing conditions in upgrading an image quality when forming an image with a dielectric developing roller. Developing conditions are set so as to satisfy Cc≧&rgr;t·dt·k/Vv, wherein Vv=−(Vbp+Vpr)−Vco+Vt·k; Cc=1/{1/Cp+2/Ct+rr/k+1/(Cr3·k)}; k=vr/vp; rr=&rgr;r·d2; Cp=∈p/dp; Ct=2·∈t/dt; Cr1=∈1/d1; Cr2=∈2/d2; C1=1/{1/Cp+2/Ct+1/(Cr1·k)}; C2=k·Cr2; Ex=(W/vp)/{rr·(C1+C2)}; Cr3=Cr1·{1−C1/(C1+C2)}·exp(−Ex); &rgr;t=(qpm+qr)·m/dt; Vco=−qpm·m/Cr1; Vpr=−qr·m·k/Cp; Vt=&rgr;t·dt/Ct.
摘要:
An image forming apparatus capable of collecting toner left on an image carrier after image transfer during an electrophotographic process, and returning the toner to a developing unit for reuse in the form of an air-toner mixture is disclosed. A toner conveying device includes a screw pump and a hopper portion positioned upstream of the screw pump in the intended direction of toner conveyance. When the collected toner accumulating in the hopper portion reaches a preselected amount, the toner conveying device is caused to start and stop operating at a specific timing.
摘要:
An endoscope system having a cover type endoscope provided with an elongate inserting section having therein an observation device and an illuminating device and bulge portions formed on the outer periphery at the side of a forwardmost end of the inserting section; and an endoscope cover having an endoscope inserting passage for covering and protecting the inserting section. The endoscope inserting passage receives the inserting section using the bulge portions as a guide. The bulge portions project more than the outer periphery of the inserting section.
摘要:
A developing apparatus includes a toner carrier for transferring toner to a development position, a layer-thickness regulating member for forming a toner layer having a predetermined thickness on the toner carrier by making contact in a leading edge or a surface of a vicinity of the leading edge with the toner carrier, and a supplier for supplying a one-component toner to the toner carrier. Also combined with the layer-thickness layer is a vibration absorbing device allowing the toner to be applied in a uniform thickness. The vibration absorbing device can also be a sealing member located on the toner carrier. Each sealing member can be two different materials effective to absorb vibration.
摘要:
A flexible nonwoven fabric comprising conjugate long fibers of sheath-core type comprising a core of a resin having a high melting point and a polyethylene sheath is provided. The fiber has a weight ratio of the resin of the high melting point to the polyethylene of from 5/95 to 20/80 and a fineness of up to 3.0 denier, and the nonwoven fabric has a sum of bending resistance in machine and transverse directions as measured by Clark method (method C in JIS L1096) of up to 80 mm. The flexible nonwoven fabric has excellent texture and frictional resistance. A laminate comprising such flexible nonwoven fabric and a gas-permeable film is also provided.
摘要:
To improve the water resisting secondary adhesion of paint films to zinc phosphate conversion coatings on aluminum, the initially formed conversion coating is treated by spraying with a second liquid treatment composition that either is itself a liquid composition capable of forming a zinc phosphate conver- sion coating on aluminum or is made by diluting such a conversion coating forming composition.
摘要:
An endoscope system including an endoscope having an insertion section which extends from a proximal end to a distal end and is inserted into a cavity under inspection and an operation section connected to the proximal end of the insertion section, and a protection cover including an insertion section inserting channel which extends from a proximal end to a distal end and into which said insertion section of the endoscope is insertable and a conduit channel which extends from the proximal end to the distal end, the improvement being characterized in that a distal end portion of the insertion section has a non-circular cross section such as a semicircular or oval cross section and a proximal end portion of the insertion section has a substantially circular cross section. A distal end member of the insertion section inserting channel has an accommodating portion which is a corresponding non-circular cross section.
摘要:
An endoscope system including an endoscope having an insertion section which extends from a proximal end to a distal end and is inserted into a cavity under inspection and an operation section connected to the proximal end of the insertion section, and a protection cover including an insertion section inserting channel which extends from a proximal end to a distal end and into which said insertion section of the endoscope is insertable and a conduit channel which extends from the proximal end to the distal end, the improvement being characterized in that a distal end portion of the insertion section has a non-circular cross section such as a semicircular or oval cross section and a proximal end portion of the insertion section has a substantially circular cross section. A distal end member of the insertion section inserting channel has an accommodating portion which is a corresponding non-circular cross section.
摘要:
A compressor has inlet guide vanes, rotor blades and stator blades. To prevent rotating stall, baffle vanes 5 capable of having their angles varied are installed upstream of the inlet guide vanes, actuators to vary the angles of baffle vanes are coupled to the baffle vanes, sensors installed upstream of the baffle vanes detect a rotating stall condition inside the flow passage of the compressor, and a control unit is responsive to signals from the sensors to output control signals to the actuators to vary the angles of the baffle vanes so as to prevent the rotating stall condition. Instead of the baffle vanes, fluid jets may be provided upstream of the inlet guide vanes for the same purposes.
摘要:
An electrophotographic color image forming machine registers which a second color toner image on a first color toner image which has been previously formed on an image carrier to form a color image. The registered images are then transferred onto a recording sheet. The machine includes control apparatus that includes first and second exposure control modulators which respectively control an exposure amount of at least one of the first color toner images and the second color toner image. A smoothing processor controls at least one of a size and a position of at least one of the first and second color toner dot images within each of a plurality of pixels and a discriminator determines whether one of the size and the position of the dot image should be controlled. A hue corrector is provided which adjusts a ratio of the exposure amounts provided by the first and second exposure control modulators to control the first and second exposure control modulators on the basis of a discriminator result of the discriminator.