摘要:
An electrostatic charging member includes a base material; and an outermost layer that contains a porous filler and a resin and has a gel fraction of at least about 50% and a surface roughness Rz in a range of about 2 μm to about 20 μm.
摘要:
In a unit body of a portable information terminal is assembled a display and a pressure-sensitive input device overlying the display. An opening and closing cover is attached to the unit body for covering the pressure-sensitive input device. An operating button device provided in the cover exposes, when the cover is closed, its operating surface from the surface of the cover. The operating button device exerts a pressing force applied to the operating surface onto the surface of the pressure-sensitive input device. Thus, with the cover closed, major function entry or data entry can be carried out.
摘要:
A charging roller including: a support; an elastic layer provided on the outer peripheral surface of the support, and having a ground-finished outer peripheral surface; and a surface layer formed to cover the outer peripheral surface of the elastic layer and that has a thickness of about 2 μm to about 10 μm from the outer peripheral surface of the elastic layer, and a proportion of water absorbed in the total of the elastic layer and the surface layer, after storage for 48 hours in an environment having a temperature of 10° C. and a humidity of 15% RH, and after storage for 48 hours in an environment having a temperature of 28° C. and a humidity of 85% RH, being about 2% to about 8% by weight, being about 2% to about 8% by weight.
摘要:
It is an object of the invention to provide a communication apparatus that can perform gain control without deteriorating an S/N ratio of signals after diversity processing. A communication apparatus according to the invention includes: a comparison unit (11) that compares gain set values calculated and outputted by AGC control units (10a) and (10b) of respective branches; and conversion units (1004a) and (1004b) that generate gain adjustment signals corresponding to the respective branches from the gain set values obtained by the comparison unit (11). The communication apparatus performs gain control for variable gain amplifiers (5a) and (5b) of the respective branches according to the gain adjustment signals from the conversion units (1004a) and (1004b).
摘要:
An electrophotographic photoreceptor for use in positive charging electrophotographic machines is disclosed, comprising an electrically conductive substrate having thereon a charge transporting layer, a charge generating layer, and a low resistance surface protective layer, in that order, wherein a squarylium acid derivative having an asymmetrical structure represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and represent a --CH.sub.3 group or a ##STR2## group (wherein Y represents a halogen atom), and X.sub.1 and X.sub.2 may be the same or different and represent a hydrogen atom, an --OH group or a halogen atom, is dispersed in said charge generating layer.
摘要:
A cleaning member for an image forming apparatus includes a core and an elastic layer helically put on an outer peripheral surface of the core and including a first elastic layer and a second elastic layer, the first elastic layer being an outermost layer and the second elastic layer being located closer to the core than the first elastic layer and having a compression set smaller than that of the first elastic layer.
摘要:
A multilayer electrophotographic photoreceptor, comprising an electroconductive substrate, and at least an interlayer and a charge-generating layer formed on the substrate, wherein the interlayer comprises fine metal oxide particles and the interlayer and the charge-generating layer comprise anthraquinone derivative(s), and wherein the interlayer has a volume resistivity in a range of 1.0×108 Ω·cm to 1.0×1013 Ω·cm when an electric field of 106 V/m is applied thereto at 28° C. and 85% relative humidity. A process cartridge and an image forming apparatus using the multilayer electrophotographic photoreceptor are also provided.
摘要:
A road antenna apparatus includes a road antenna 104 which is mounted on a post 103 and at an elevated position on a road R and establishes radio communication with an on-vehicle radio device 102 mounted in a vehicle 101 which is traveling over the road; A controller controls a level of a transmission output signal of the antenna based on a receiving rate of the transmission output signal. A laser-beam emitting device 111 is mounted on the road antenna and radiates a laser beam onto the surface of the road. A laser-beam receiving device mounted on the road receives the laser beam emitted from the laser-beam emitting device. The controller stops the operation of the antenna when the laser-beam receiver device cannot receive the laser beam.
摘要:
A road antenna apparatus includes a road antenna 104 which is mounted on a post 103 and at an elevated position on a road R and establishes radio communication with an on-vehicle radio device 102 mounted in a vehicle 101 which is traveling over the road. A receiving rate of the established radio communication is detected. A transmission output is set based on detecting a suitable receiving rate for a desired communications area established between the transmitter and the receiver.
摘要:
A frequency conversion circuit for mixing first and second frequency signals to supply an output frequency signal comprises: first and second FETs having first and second gates for receiving the first and second frequency signals respectively; and a third FET having a third gate ac-grounded, the first to third FETs being connected in series such that a current flowing through the current circuit between the source and drain is controlled by the first to third gates, the third FET being provided between the first and second FETs. The third FET may also be provided between connection an end of the series connector and the second FET in accordance with frequency differences between the first and second frequency signals and between the second frequency signal and the output frequency signal. A triple gate FET can be used in place of these three FETs connected in series. A quad gate FET can be used also. A mixing circuit including the frequency conversion circuit mentioned above is also disclosed.