摘要:
A vapor source-holding container has an opening smaller than the evaporating area of the material held in the container and a wall portion in contact with the material and having an emissivity lower than the external surface of the wall portion not in contact with the material.
摘要:
An evaporation source designed so that two or more materials to be evaporated are heated to evaporate by respective heaters, as well as method of using such an evaporation source are disclosed. The evaporation source further includes means for detecting the temperature of the slowly evaporating material and means for controlling the heaters on the basis of the detected temperature. The method of using this evaporation source comprises controlling the temperature of the slowly evaporating material in order to control the temperature of the evaporation source in such a manner that the respective materials are simultaneously heated to evaporate and deposit a film on a substrate.
摘要:
An electrophotographic photoreceptor comprising a conductive layer and a photosensitive layer of vapor-deposited selenium-antimony alloy film formed thereon is disclosed. The photosensitive layer has an average antimony concentration of 5 to 21 wt % and the center layer thereof except for the skin layer on either side has a change in antimony concentration within 2 wt % in any region that is 1000 deep .ANG. from the surface of the skin layer.
摘要:
Photosensitive element for electrophotography which comprises(a) a photosensitive layer composed of (1) a binder resin and (2) particles of photoconductive material being dispersed in said binder resin and each particle comprising a photoconductive zinc oxide particle having been encapsulated over its surface with an encapsulating resinous material;(b) an electroconductive support for said photosensitive layer; and(c) an intermediate layer being located between said photosensitive layer and said support, and composed of a water-soluble polymer.The water-soluble polymer preferably is a casein, and a sensitizing agent preferably is adsorbed by the surface of the zinc oxide particle and or included in the encapsulating resinous layer.
摘要:
An electrophotographic element having a conductive support upon which a coating of oleophilic resin-encapsulated zinc oxide particles, and a sensitizer dispersed in a binder containing vinyl chloride and vinyl acetate polymers is disclosed. Capsule wall can be 5A to 1.mu. thick. The oleophilic resin can be silicone, urethane, epoxy.
摘要:
A method of manufacture an ink jet head in which an ink is jetted from a nozzle hole by applying an electric voltage to an electrode so as to deform ink chambers divided by a partition wall. The method includes the steps of providing plural piezoelectric base plates having polarization side by side on a first non-piezoelectric plate, forming plural grooves for the ink chambers on the piezoelectric base plates and at connecting portions where each edge of the plural piezoelectric base plates provided side by side comes to face other edge; and mounting a second non-piezoelectric base plate on the plural piezoelectric base plates as so to cover the plural grooves so that the ink chambers divided by the partition wall are formed.
摘要:
A non-contact type of developing device for use in an image forming apparatus having an image forming body, includes a developer conveying body facing the image forming body in which a magnet body having a plurality of magnet poles are attached therein, to convey two-component developer in the form of a developer layer onto a developing area and a control electrode provided at the developing area or upstream of the developing area. The control electrode has an electrically insulating member which is in contact with or close to the developing layer, and an electrode to which a voltage is applicable is attached to the insulating member. The following condition is satisfied: ##EQU1## where D.sub.T represents a number of toner layers on the assumption that the toner particles passing through the developing area are filled most densely, D.sub.WS represents a conveying amount (mg/cm.sup.2) of the developer layer at the developing area on the developer conveying body, T.sub.c represents a toner concentration (%) in the developer, dt represents an average sphere equivalent diameter (.mu.m) of toner in the developer, .rho.t represents a toner density (g/cm.sup.3) in the developer, vs represents a circumferential speed (mm/s) of the developer conveying body at the developing area, and vp represents a circumferential speed (mm/s) of the image forming body at the developing area.
摘要翻译:一种用于具有图像形成主体的图像形成装置中的非接触型显影装置,包括:面向图像形成主体的显影剂输送主体,其中附接有多个磁极的磁体, 显影剂层形式的显影剂组分显影剂和设置在显影区域的显影区域或显影区域上游的控制电极。 控制电极具有与显影层接触或靠近显影层的电绝缘构件,并且能够施加电压的电极附着到绝缘构件。 满足以下条件:其中DT代表通过显影区域的调色剂颗粒最密集地填充的调色剂层数,DWS表示显影剂层的输送量(mg / cm 2) 显影剂输送体上的显影区域,Tc表示显影剂中的调色剂浓度(%),dt表示显影剂中调色剂的平均球当量直径(μm),rho表示显影剂输送体中调色剂浓度(g / cm 3) 显影剂vs表示显影剂输送体在显影区域的圆周速度(mm / s),vp表示图像形成体在显影区域的圆周速度(mm / s)。
摘要:
An image forming apparatus uses a contact-type charger to charge a photoreceptor. The D.C. current supplied to the charger is measured while the output value of the A.C. voltage is changed within a predetermined range, and the output value of the A.C. voltage is set in accordance with the measurement result.
摘要:
An image forming apparatus such as an electrophotographic copier and an electrophotographic printer. The image forming apparatus includes: a photoreceptor for forming a toner image on its surface; a charger for charging the surface with a bias voltage, including a DC component and a AC component, through a magnetic brush member which is in contact with the surface; a driving unit for moving both of the surface of the photoreceptor and the magnetic brush member in synchronism; a laser unit for imagewisely exposing a predetermined image area of the surface, which is charged by the charger, so that a latent image is formed on the surface; and a discharge lamp for exposing the surface with light so that the surface is discharged. In such the image forming apparatus, the discharge lamp starts exposing the surface with the light and the bias voltage, with which the surface is charged, is set at substantially 0 volt before the driving starts moving the surface and the magnetic brush member; and the predetermined image area of the surface is charged with the bias voltage, including the DC component and the AC component, after the driving starts moving the surface and the magnetic brush member.
摘要:
The invention provides an apparatus for forming a toner image by reversal development. In the apparatus, there are provided an electric charger for uniformly charging a photoreceptor to a given electrostatic potential; the photoreceptor discharging in response to an exposure light to form an electrostatic latent image, the photoreceptor having a predetermined light decay curve indicating a relation between an amount of the exposure light and a discharged potential on the exposed portion wherein an absolute value of the differential coefficient of the light decay curve is small when the amount of the exposure light is small and the value sharply becomes large when the amount of the exposure light increases; a laser beam exposure device for exposing the photoreceptor with a dot-shaped light beam; and a developing device for providing toner onto the exposed portion of the latent image, thereby forming a toner image.