electrophotography (Total 5422 Patents Found)

Disclosed are method and apparatus for producing highly uniform films of photosensitive materials (e.g., amorphous silicon) for electrophotography on large diameter cylindrical metal substrates (e.g., aluminum or stainless steel) by plasma chemical vapor deposition (CVD). The cylindrical substrate is rotatably mounted ...
Disclosed is a carrier core material for an electrophotographic developing agent, which comprises 100 parts by weight of a ferrite component represented by a formula (A) and 0.1 to 5.0 parts by weight of ZrO 2 that is present in the ferrite component without forming a solid solution, and which has a magnetization, at ...
The invention is an intermediate transfer element for liquid electrophotography comprising a material which is capable of absorbing the carrier liquid in amounts from 5 to 100% by weight based on the weight of the absorbing material, as well as, a system incorporating that element and a method of creating an image usin...
Disclosed is a binder resin for a toner which contains a styrene-acrylic resin having a gel component and a small amount of a volatile component. Also disclosed are a method for producing the binder resin and a toner employing the binder resin. A binder resin (A) for a toner contains a styrene-acrylic resin havin...
A method of cleaning off a residual toner from the surface of an image forming member in an electrophotography apparatus comprises applying an alternating electric field between the surface of the image forming member and a cleaning member, for causing the residual toner to move from the surface of the image forming me...
The present invention provides an electrophotographic dry toner comprising colored resin particles with releasing agent particles dispersed in a binder resin or an electrophotographic dry toner wherein a resin coating layer obtained by the fixation and fusion of encapsulating resin particles is provided on the surface ...
The invention relates to a method for producing a toner by polymerizing an aqueous suspension of a monomer in the presence of a dispersant selected from orthophosphate, pyrophosphate and polyphosphate, a colorant and an anionic surfactant. The polymerization product is then treated with dilute acid and rinsed with wate...
PROBLEM TO BE SOLVED: To provide a compound excellent in electron-transporting function and useful for the uses of an electrophotography photoreceptor, organic EL (electroluminescence), etc. SOLUTION: This new quinone compound has a structure expressed by general formula (I) [wherein, R 1 to R 8 are each H or a...
<P>PROBLEM TO BE SOLVED: To provide a method and a system for printing an electronic device using electrophotography. <P>SOLUTION: A method and a system are provided for printing an electronic device onto a substrate using electrophotography (EP). The method includes generally three steps. First, a surface...
提供有助于形成高品质电子照相图像的电子照相用构件制造方法。具有导电性基体、弹性层和表面层的电子照相用构件的制造方法,其中,电子照相用构件的制造方法具有:第一步骤,在弹性层的表面上形成由用于形成表面层的涂布液制成的...
A liquid electrophotographic ink developer comprises a developer roller ( 112 ) rotatable about an axis, first and second electrodes ( 108, 110 ) proximate the developer roller ( 112 ) and an inlet chamber ( 100 ) extending along the axis from a first end adjacent an inlet opening ( 122 ) to a second end opposite the f...
An electrophotographic image receiving sheet with a toner image receiving layer containing a release agent and formed on a support sheet for use in a fixing belt type electrophotography is disclosed. The toner image receiving layer satisfies the following condition: γ sp 0 −γsp 1 ≧2.5[mJ/m 2 ] where γs...
A cleaning apparatus for a toner image retaining member of an electrophotographic copying machine includes an elastic cleaning blade for removing residual toner from the surface of the toner image retaining member, the elastic cleaning blade having two opposite ends, one end having a protuberance with a cleaning edge. ...
A photosensitive member is exposed to light prior to primary charging so that the surface potential applied by primary charging may always be maintained at a constant level to which the photosensitive member is always charged when it is repetitively used for some time, which may be predetermined by test. Until the surf...
Disclosed is a laminate type photosensitive material for the electrophotography, which comprises a charge-generating layer and a charge-transporting layer, which are formed on an electroconductive substrate, wherein the charge-transporting layer comprises a first charge-transporting material having an ionization potent...
A developer for an electrostatic latent image is disclosed, which comprises a carrier powder, a toner powder, and a fine powder that has a particle size smaller than that of the toner powder said fine powder being made of a polymer which is located closer to the carrier side of the triboelectric series than to the tone...
Provided is an electroconductive member configured to suppress a void image caused by abnormal discharge and a horizontal streak-like image caused by downstream discharge without depending on the thickness of a photosensitive layer of a photosensitive drum over a long period of time. The electroconductive member for el...
An embodiment may be an electrophotographic toner which comprises at least one toner particle which comprises an inner layer and an outer layer covering the inner layer, wherein a cross-sectional area ratio of the outer layer to the inner layer is 0.05-0.46, and wherein a non-uniform thickness exists in the outer layer...
A positive-charging electrophotography photoreceptor includes a laminated structure having a conductive supporting member, a charge transport layer formed of at least a hole transport material and a first binder resin, and a charge generation layer formed of at least a charge generation material, hole transport materia...
Disclosed is a photosensitive material for the electrophotography, which comprises a dispersion of a charge-generating pigment in a charge-transporting medium composed mainly of a polyvinyl carbazole resin, wherein a perylene pigment represented by the following general formula: ##STR1## wherein R 1 and R 2 stand for...
An electrophotography processor has detachable electrophotographic component parts representing by main body frame, a developing device, a toner box, and a light-sensitive drum unit including a light-sensitive drum, cleaning device and charging device integrated in a unit, wherein the developing device and light-sensit...
A developer contains a silicone oil which has an amine on side chain thereof, a development process comprises arranging a member holding an electrostatic image on the surface and a member for carrying a toner on the surface and a fixing method comprises contacting a toner image on an image-supporting member with a heat...
A developer, including a toner including a binder resin comprising a crystalline resin; and a colorant, and a resin carrier comprising a resin; a magnetic particulate material having a magnetic anisotropy, dispersed in the resin, and having a saturated magnetization of from 16 to 30 emu/g, a coercive force of from 15 t...
There is provided an improved light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a contact layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and at least one kind selected from nitrogen...
Full process color imaging using black, magenta, cyan and yellow toners. A photoreceptor is utilized which is responsive to two beams of a dual wavelength laser diode exposure device or of Light Emitting Diode (LED) exposure devices operating at two different wavelengths. One of the light beams emitted by the exposure ...
The present invention relates to transfer paper in electrophotography that shrinks by no more than 0.45% in a direction crossing a flow in making paper process and which has a two sideness shrinkage difference in a crossing direction ranging 0.02 to −0.02%. The present invention also relates a process for producing e...
A photosensitive member for electrophotography has a photosensitive layer provided on a photoconductive substrate. The photosensitive layer contains at least one of indole derivatives represented by a chemical formula (I): ##STR1## wherein R 1 and R 2 are members selected from a group consisting of hydrogen atom and ...
An electrophotographic image receiving sheet with a toner image receiving layer containing a release agent and formed on a support sheet for use in a fixing belt type electrophotography is disclosed. The toner image receiving layer satisfies the following condition: γ sp 0 −γsp 1 ≧2.5 [mJ/m 2 ] ...