摘要:
A uniform image is obtained by matching the sliding friction force, the moving speed and the developing agent in a developing region of two developing rollers and an electric characteristic of a photosensitive body used for image development. Two developing rollers rotating in directions opposite to each other are used, the moving direction of the first developing roller being opposite to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the first developing roller to a circumferential speed of the photosensitive body is within a rage of 0.5 to 2.5; and the moving direction of the second developing roller is equal to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the second developing roller to a circumferential speed of the photosensitive body is within a range of 1.5 to 3.5. A ratio of the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the first developing roller and the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the second developing roller is within a range of 0.9 to 2.1.
摘要:
An 8-bit CLA adder is constructed for inputting 4 lower bits a3:0,b3:0 and 4 upper bits a7:4,b7:4 of two input signals to the two 4-bit full adders 2,12 and a carry c-1 to the lowest bit the full adder of the first-stage 2 to generate carries c3,c7 correspondint to the third and seventh bit of the input signals from a carry generation signal g7:0 and a carry propagation signal p7:0 generated by the both adders 2,12 and the carry c-1. The full adder of the second-stage 12 is constructed to add the 4 upper bits a7:4,b7:4 with setting a carry-in as 0 so as to generate a temporary summing signal sz7:4. A logical circuit 14 generates a true sum of 4 upper bits from a carry c3 to the third bit to the forth bit, a temporary sum sz7:4 and a carry propagation signal p7:4 generated by the full adder of the second-stage 12.
摘要:
The present invention provides a traverser, which includes a support member driven by a chain and movable between a carry-in rail and carry-out rail which are disposed parallel with each other. The support member transfers a truck from said carry-in rail to said carry-out rail. A groove for receiving a flange of a wheel of the truck is formed in an upper surface of the support member.
摘要:
An electrophotographic charger of the type in which a plurality of corona wires extend in the axial direction adjacent to and separated from the surface of a photosensitive drum in order to charge the surface. A plate-like etching grid is interposed between the corona wires and the drum to ensure the charge is uniformly placed on the drum. The grid is divided into a number of individual removable grids so that the distance between each grid and the adjacent corona wire, and the distance between each grid and the drum surface is substantially uniform.
摘要:
A ceramic-metal composite body is produced by fitting a protruding portion of a ceramic member into a concave portion of a metallic member. In this case, the protruding portion has a quantity of undulation in a plane including the axial line of the protruding portion of not more than 5 .mu.m.
摘要:
According to one embodiment, in a write control unit that performs writing on a selected memory cell connected to a selected word line by making to apply a program voltage to the selected word line while making to apply an intermediate voltage to unselected word lines, an isolation voltage is controlled to be applied to any word line of the unselected word lines at a time of applying the program voltage and the isolation voltage is controlled to increase before the intermediate voltage is removed after applying the program voltage.
摘要:
An infrared sensor package includes a housing member, which includes an upper-surface section provided with a transmission member which transmits infrared radiation and a lower-surface section and whose inner space is vacuum-sealed, a plate-like heater member which is disposed within the inner space of the housing member and generates heat, an infrared detection element which is fixed onto the heater member and detects the infrared radiation which is transmitted by the transmission member, and a heat-insulating member which has a low thermal conductivity and a smaller cross-sectional area than that of the heater member, and supports the heater member while being fixed onto the lower-surface section.
摘要:
A process for producing triterpene alcohol, comprising sequentially conducting the following steps (A) to (C): (A) subjecting γ-oryzanol to alkaline hydrolysis; (B) mixing the alkaline hydrolysate with a low polarity organic solvent, and extracting triterpene alcohol to obtain a triterpene alcohol-containing low polarity organic solvent; and (C) adding water to the triterpene alcohol-containing low polarity organic solvent thus obtained, removing the low polarity organic solvent, and then melting triterpene alcohol in hot water, followed by cooling.
摘要:
A wide-angle zoom lens system includes a negative fist lens group, a positive second lens group, and a positive third lens group, in this order from the object.Upon zooming from the short focal length extremity to the long focal length extremity, each of the negative fist lens group, the positive second lens group and the positive third lens group move along the optical axis thereof while a distance between the negative fist lens group and the positive second lens group decreases, and a distance between the positive second lens group and the positive third lens group also decreases.The wide-angle zoom lens system satisfies the following condition: 2.45
摘要:
There is disclosed an image forming apparatus including: a latent image carrier; a latent image writing unit; a development unit; a latent image carrier unit having the latent image carrier; a first positioning protrusion disposed on the latent image carrier unit, the first positioning protrusion being engaged with a groove or a slit of an image forming apparatus body; an abutted portion disposed on the groove or the slit, the abutted portion abutting the first positioning protrusion in order to position the latent image carrier unit in an installation and removal direction; and a second positioning protrusion shifted in the installation and removal direction and disposed on the latent image carrier unit, the second positioning protrusion positioning the latent image carrier unit at a position different from a position of the first positioning protrusion in order to engage the groove or the slit.