摘要:
A hydrophilic colloid is hardened with a vinyl-sulfone hardener in the presence of a borate compound in an amount sufficient to accelerate the rate of hardening. The borate compound is preferably a compound of Formula (I), or a salt, hydrate or precursor thereof: B(L).sub.n (I) wherein each L is independently --OH, --OR, --NH, --NR, or a substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, or substituted or unsubstituted heterocyclic group; R is a substituted or unsubstituted alkyl group or substituted or unsubstituted aryl group; and, n is 1, 2, or 3, with the proviso that at least one L is --OH. Preferred borate compounds are sodium and potassium borate, and hydrates thereof, and phenyl boronic acid.
摘要:
A photoconductive element comprising an electrically conductive base; two or more charge generation layers; at least one charge transport layer; and a protective layer comprising diamond-like carbon, having fluorine between 0 and 65 atomic percent of the protective layer.
摘要:
A bipolar charge transport material that is useful in electrophotography, said bipolar charge transport material N,N'-bis-�p-(di-p-tolylamino)phenyl!-1,4,5,8-naphthalenetetracarboxylic acid having the structure: ##STR1##
摘要:
There is provided an electrophotographic element and method of making the electrophotographic element comprising a conductive support, a charge generation layer and a charge transport layer, said electrophotographic element having thereon a protective layer of a fluorinated diamond-like carbon wherein the fluorine content of the outermost surface of the fluorinated diamond-like carbon layer is between about 25 and about 65 atomic percent based on the total composition of the outermost surface of the protective layer. The protective layer provides for a low surface energy coating having a long process lifetime without causing latent image spread or degradation of photosensitivity.
摘要:
A bipolar electrophotographic element comprising a) a single active bipolar photoconductive layer on an electrically conductive support and b) a diamond-like carbon protective layer, having a fluorine content between 0 and 65 atomic percent based on the composition of the entire protective layer, and also having a thickness between 0.05 and 0.5 .mu.m. Also disclosed is a coating composition for a single bipolar photoconductive layer comprising: i) one or more binder polymers; ii) at least one aggregating dye salt; iii) at least one organic charge transport agent; and iv) a volatile coating solvent.
摘要:
An electrophotographic apparatus with improved blue sensitivity comprises: a) a charging means; b) an exposure means, which includes light of a wavelength between 350 and 500 nanometers, and c) a photoconductive element comprising an electrically conductive base, two or more charge generation layers, at least one charge transport layer, and a protective layer comprising plasma-polymerized fluorocarbon, wherein the fluorine content of the protective layer is equal to or greater than 2.2 and less than 65 atomic percent. A method of making an image is also disclosed.
摘要:
A process for reducing image defects in an electrostatographic image resulting from particulate contamination. A primary imaging member, including a photoconductive element and an outermost layer of silicon carbide, is uniformly charged in an electrostatographic imaging apparatus subject to particulate contamination. The electrostatographic imaging apparatus includes a charging station, an exposing station, at least one developing station, and a transfer station comprising an electrically biased roller transfer assembly. The primary imaging member is exposed imagewise at the exposing station to form a latent image on the imaging member, which is thereafter developed with toner at the developing station to form a developed image on the imaging member. The primary imaging member bearing the developed image is passed through a charge erasing station to remove residual surface charge, then contacted with a receiver by the electrically biased roller transfer assembly, causing the developed image to transfer to the receiver. The silicon carbide layer protects the photoconductive element against damage by contaminant particles present in the apparatus.
摘要:
A photoconductive element comprising: an electrically conductive base; at least one active layer comprising an organic material, said at least one active layer being capable of charge generation and charge transport; and an outermost multilayer protective overcoat comprising at least one sol-gel layer and at least one outermost diamond-like carbon layer comprising fluorine.
摘要:
A fuser member having a core and a layer overlying the core. The layer includes: an addition crosslinked polyorganosiloxane elastomer, and zinc oxide particles dispersed therein in a concentration of from 5 to 40 percent of the total volume of the layer.
摘要:
A method and an apparatus for producing, in a single pass, an electrophotographic image comprising at least two colors. The photoconductive element is bipolar, and has a single active layer and a protective layer of diamond-like carbon.