摘要:
The present invention provides a start developer wherein an output voltage of a sensor in the start developer having a particular toner density is not less than 0.9 times an output voltage of the sensor in a developer having the same toner density in a time period during which image characteristics are stabilized after repeating image formation by an image forming apparatus and is less than a threshold value at which the supply of toner is started and a method of controlling the toner density using the start developer. According to the present invention, good images can be always formed irrespective of the variation in characteristics between sensors in image forming apparatuses and from the early stage of image formation to the stable time period.
摘要:
A bone prosthetic material composed of calcium phosphate group granules which have open cells with an average pore size of 0.01-(10 .mu.m).sup.2 over a surface density of at least one per 10 .mu.m.sup.2. The prosthetic material is prepared by mixing organic inflammable particles with a calcium based powder, granulating and then firing the mixture.
摘要:
An implant member is provided with at least one projection on its outer surface. Biological fusion with newly formed bony tissues is facilitated by permitting the projections to establish a small clearance between the implant and the surrounding bone.
摘要:
An upper structure for an artificial apatite dental root is disclosed. The structure includes inner and outer crowns having a buffer element placed therebetween. The buffer element serves as a satisfactory substitute for the periodontal membrane of a natural tooth.
摘要:
A test reagent container includes: a bottom part; a peripheral wall part on the periphery of the bottom part; a storage part which opens upward and with an internal diameter of an inner peripheral wall decreased with depth; a film which seals the opening of the storage part; a discharge channel which penetratingly passes from an inner bottom surface of the storage part to the bottom part of the container body; a projecting part formed downwardly projecting from the bottom part to seal an outlet of the discharge channel; a breakable part including a thick-walled part and a thin-walled part thinner than the thick-walled part formed on the periphery of the projecting part. The breakable part is broken when the projecting part is depressed from outside of the container, the projecting part is inserted into the inside of the discharge channel, and the sealed state of the outlet is released.
摘要:
A test reagent container including a discharge port, formed by depressing a projecting part formed on a container bottom part, through which content can be easily and reliably discharged. The test reagent container includes: a bottom part; a peripheral wall raised approximately perpendicularly from a periphery of the bottom part; and a storage part defined by the bottom part and peripheral wall. A projecting part is formed on the bottom part in a projecting manner toward outside the container. A proximal end of the projecting part is formed in a bendable manner relative to the bottom part, and an easily breakable part is formed on a periphery of the projecting part except for the proximal end of the projecting part. The easily breakable part is broken when the projecting part is depressed from outside the container to be pushed into the inside of the container to form a discharge port.
摘要:
It is an object to provide an active matrix liquid crystal display device capable of effectively eliminating flicker with a simple structure. An active matrix liquid crystal display device has a plurality of gate lines, a plurality of source busses extending orthogonal to the gate lines, a plurality of liquid crystal elements provided in intersections of the gate lines with the source busses and, as a whole, disposed in matrix form, the liquid crystal devices being connected between a pixel electrode and an opposite electrode connected to a first bus line in a floating condition, a plurality of control circuits provided in relation with the liquid crystal element, the control circuits having: first and second transistors, of which gates are connected to the gate lines respectively, arranged in series between the source busses and the pixel electrode, a third transistor provided between a midpoint node of the first and second transistors and a second bus line to serve as a switch, the second bus line being identical in potential to the first bus line and being electrically isolated from the first bus line, and a fourth transistor connected in parallel with the liquid crystal elements between the pixel electrode and the opposite electrode to detect drain voltage.
摘要:
An inclination sensor includes a container in which an electrolyte liquid and a gas bubble are sealed. The container has a top member with a concave surface having a radius of curvature in a first direction larger than a radius of curvature in a second direction, perpendicular to the first direction. The concave surface is provided with two electrodes that are aligned in the first direction. An inclination of an object is measured by mounting the inclination sensor to the object and electrically detecting the position of the bubble as it contacts the concave surface, by passing a current through the liquid.
摘要:
A recycle developing method utilizes the steps of (1) providing a developing vessel containing a starting developer composed of an electroscopic toner and a magnetic carrier; (2) transferring toner from the developing vessel to a photosensitive material having an electrostatic latent image formed thereon; (3) transferring a portion of the toner on the photosensitive material to a paper to form a toner image on the paper; (4) recovering toner remaining on the photosensitive material after the aforementioned portion of toner is transferred to the paper to form a toner image thereon; and (5) repeating steps (2)-(4) while replenishing toner in the developing vessel by the sub-steps of: (5a) supplying toner recovered in step (4) to the developing vessel, and (5b) supplying a virgin toner, having a higher chargeability than the electroscopic toner in the starting developer, to the developing vessel, to form a mixed toner in the developing vessel. An absolute value of the average charge quantity of the mixed toner is greater than the absolute value of the average charge quantity of the electroscopic toner in the starting developer plus 10 .mu.C/g. Apparatus to effect the process is also disclosed.
摘要:
A developing method using a compact machine such as a copying machine for personal use, etc., employs a two component-type magnetic developing agent with small diameter photosensitive drum and small diameter developing sleeve. In order to eliminate toner falling from the drum and/or sleeve to increase toner transfer efficiency and reduce fogging, the developing agent conveying sleeve is provided with a curvature (mm.sup.-1) of from 0.2 to 0.05. The toner is specifically designed for use in the method and includes magnetic fine particles having a saturation magnetization of not smaller than 70 emu/g and hydrophobic fine silica particles added to fixing resin particles containing a coloring agent.