摘要:
The present invention provides an image forming apparatus, which is able to prevent the adherence of toner on the surface of toner controlling means and around a toner passage hole, and to stably carry out toner passage ON/OFF control when forming an image using the direct recording method. This image forming apparatus includes: a toner carrier; recording medium means; toner controlling means, disposed between the toner carrier and recording medium means, and having a plurality of toner passage holes; and cloud electrode means disposed between the toner carrier and toner controlling means, a toner cloud being formed by applying an AC bias between the toner carrier and cloud electrode means. A control electrode and a common electrode are disposed in toner controlling means, and when the toner of the toner carrier is able to pass through the toner controlling means toward recording medium means, a loop-shaped line of electric force is formed between the recording medium means side and the toner controlling means common electrode, the loop-shaped line by-passing the control electrode.
摘要:
The present invention provides an image forming apparatus, which is able to prevent the adherence of toner on the surface of toner controlling means and around a toner passage hole, and to stably carry out toner passage ON/OFF control when forming an image using the direct recording method. This image forming apparatus includes: a toner carrier; recording medium means; toner controlling means, disposed between the toner carrier and recording medium means, and having a plurality of toner passage holes; and cloud electrode means disposed between the toner carrier and toner controlling means, a toner cloud being formed by applying an AC bias between the toner carrier and cloud electrode means. A control electrode and a common electrode are disposed in toner controlling means, and when the toner of the toner carrier is able to pass through the toner controlling means toward recording medium means, a loop-shaped line of electric force is formed between the recording medium means side and the toner controlling means common electrode, the loop-shaped line by-passing the control electrode.
摘要:
A copying method for producing duplicates of an original of at least two colors by using a composite photosensitive member including more than two photosensitive layers, wherein the photosensitive member is subjected to charging more than twice and exposed to an optical image of the original more than once by changing charging and exposing conditions, to vary charge carried on the surface and in the interior of the photosensitive member. This causes two types of electrostatic image to be formed on the surface of the photosensitive member; one type includes image regions having a positive surface potential, a negative surface potential and a substantially zero surface potential respectively and the other type includes two image regions having different surface potentials of same polarity respectively, and one image regions of substantially zero surface potential, depending on differences in color between image regions of the original corresponding to the image regions on the photosensitive member. By suitably selecting charging and exposing conditions, it is possible to selectively carry out, by using a single copying apparatus, a copying mode in which duplicates are produced in several colors, a copying mode in which duplicates are produced in one color and a copying mode in which image regions of one color are erased.
摘要:
A liquid crystal display cell comprising a pair of flexible polymer film substrates having a transparent electrode disposed on the surface thereof and a liquid crystal material sandwiched therebetween. The transparent electrode is a metal oxide film which has a surface resistivity of not greater than 100 ohm per square, a bending property of not greater than 2.0, a curling degree, H, of 0
摘要:
In the process and apparatus, the first copy is made from an original document to be copied or from an image information fed to the apparatus in the form of input signals and, from the second copy on, copies are made from the respective preceding copies before the respective preceding copies are discharged from the apparatus until a desired number of identical copies are obtained.
摘要:
A projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom includes a liquid crystal cell, a first polarization device and a reflection device disposed respectively on the opposite side from the irradiated side of the liquid crystal cell and a second polarization device and optical magnifying means disposed respectively on an optical path of the reflection light reflected by said reflection device and outgoing from said liquid crystal cell.
摘要:
In an electrophotographic system in which latent images of negative and positive polarities formed electrostatically on a photoconductive member or a dielectric member are successively developed with two different kinds of toners and then transferred onto a transfer medium, an image transfer and sheet separation apparatus comprises a precharger for uniformalizing the different polarities of the toners carried on the photoconductive member or the dielectric member, a transfer charger for transferring the toners onto the transfer medium, and a conductive member for image transfer and sheet separation located to become intimately engaged by the transfer medium and provided with means for applying a voltage.
摘要:
There are provided an organosilicon compound of formula (I) and a producing method thereof: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each is an alkyl group having 1 to 6 carbon atoms, or a phenyl group which may have a substituent; R.sup.4 is an alkyl group which may have a substituent, an alicyclic alkyl group, a phenyl group which may have a substituent, or a benzyl group which may have a substituent; and X is a halogen atom, a benzenesulfonate radical, a hydroxynaphthalenesulfonate radical, BPh.sub.4, BF.sub.4, ClO.sub.4, or SbCl.sub.5. In addition, a toner and a two-component dry developer for developing latent electrostatic images containing the above organosilicon compound are also provided.
摘要:
A cleaning device for removing the residual toner particles on the insulating surface in a two color printing apparatus includes a rotatable cleaning brush having two kinds of fiber materials charged the opposite polarities, and a flicker device is also provided for flicking the brush to remove toner particles therefrom as the brush rotates.
摘要:
In an electrostatographic apparatus (11) such as a facsimile receiver, an electrical discharge electrode assembly (14) progressively forms an electrostatic image on an endless belt (12) as the belt (12) moves relative thereto. The belt (12) comprises a transparent substrate layer (12a) on which is formed a photoconductive layer (12b) and a dielectric layer (12c), with the electrostatic image being formed on the dielectric layer (12c). A lamp (26) illuminates the photoconductive layer (12b) to vary the conductivity thereof with an intensity according to the speed of movement of the belt (12).