摘要:
A thick organic ambipolar layer on a photoresponsive device is simultaneously capable of charge generation and charge transport. In particular, the organic photoresponsive layer contains an electron transport material such as a fluorenylidene malonitrile derivative and a hole transport material such as a dihydroxy tetraphenyl benzadine containing polymer. These may be complexed to provide photoresponsivity, and/or a photoresponsive pigment or dye may also be included.
摘要:
A process is disclosed for forming at least one thin substantially uniform fluid coating comprising polymeric film forming material on a cylindrical mandrel, solidifying the fluid coating to form a uniform solid coating and separating the uniform solid coating from the mandrel. The process may comprise forming at least one thin substantially uniform fluid coating comprising polymeric film forming material around a cylindrical mandrel, the mandrel having a larger mass or lower thermal conductivity than the polymeric film forming material and a critical surface tension greater than the surface tension of the fluid coating, solidifying the fluid coating to form at least one thin substantially uniform solid coating comprising the polymeric film forming material around the cylindrical mandrel, heating both the uniform solid coating and the mandrel to a temperature at least above the apparent T.sub.g of the solid coating to expand the coating and the mandrel while maintaining contact between the coating and the mandrel, cooling the coating to below the apparent T.sub.g of the solid coating prior to substantial cooling of the mandrel, and cooling the mandrel whereby the mandrel contracts at a greater rate than the polymeric coating until separation occurs between the mandrel and the coating, and removing the coating from the mandrel.
摘要:
A polymeric arylamine represented by repeating units having the formula: ##STR1## wherein: n is between about 5 and about 5,000,Z is selected from certain specified aromatic and fused ring groups,m is 0 or 1,Ar' is selected from certain specified aromatic groups, andAr is selected from certain specified aromatic groups.
摘要:
An electrostatographic imaging member and an electrophotographic imaging process for using the imaging member are disclosed in which the imaging member comprises a substrate and an electrophotoconductive layer, the imaging member comprising a polymeric arylamine compound represented by the formula: ##STR1## wherein: n is between about 5 and about 5,000,Z is selected from certain specified aromatic and fused ring groups,m is 0 or 1,Ar is selected from certain specified aromatic groups, andAr' is selected from certain specified aromatic groups.The imaging member may comprise a substrate, charge generation layer and a charge transport layer.
摘要:
An electrostatographic imaging member and an electrophotographic imaging process for using the imaging member are disclosed in which the imaging member comprises a substrate and an electroconductive layer, the imaging member comprising a polymeric acrylamine compound represented by the formula: ##STR1## wherein n is between 5 and about 5,000,m is 0 or 1,y is 1, 2 or 3,Z is selected from certain specified aromatic and fused ring groups,Ar is selected from certain specified aromatic groups,Ar' is selected from certain specified aromatic groups, andX' is alkylene radical selected from the group consisting of alkylene and isoalkylene groups containing 2 to 10 carbon atoms.The imaging member may comprise a substrate, charge generation layer and a charge transport layer.
摘要:
A device containing a substrate and an electrically conductive layer including a film forming continuous phase containing a charge transport compound and finely divided electrically conductive particles dispersed in the continuous phase. This device may be coated with at least one photoconductive layer and used in an imaging process.
摘要:
A process for preparing a toner donor roll having an integral electrode pattern involving: (a) providing a cylindrically shaped insulating member; (b) coating the insulating member with a photo or thermally sensitive composition comprised of a polymeric material and a conductive metal nucleating agent; (c) patterning the composition, resulting in a first composition portion corresponding to the electrode pattern and a second composition portion; and (d) depositing conductive metal on the first composition portion, resulting in the electrode pattern which is capable of being electrically biased to detach toner particles from the donor roll. In an alternative embodiment, there is provided an insulating member comprised of an insulating polymeric material and a conductive metal nucleating agent.
摘要:
An electrophotographic imaging member containing a supporting substrate having an electrically conductive surface comprising charge injecting material, a charge blocking layer including a water insoluble high molecular weight unmodified hydroxy methacrylate polymer and at least one photoconductive layer, the charge blocking layer having a surface resistivity greater than about 10.sup.10 ohm/sq. This imaging member may be employed in an electrostatographic imaging process.
摘要:
An electrophotographic imaging member including a supporting substrate, an electrically conductive layer including at least a partially crosslinked polymer having a backbone derived from an alkyl acrylamidoglycolate alkyl ether, a charge blocking layer including a polymer having a backbone also derived from an alkyl acrylamidoglycolate alkyl ether and at least one photoconductive layer. Preferably, the backbone derived from an alkyl acrylamidoglycolate alkyl ether is a copolymer of methyl acrylamidoglycolate methyl ether and a vinyl hydroxy ester or vinyl hydroxy amide. This imaging member may be prepared by a coating process and employed in an electrostatographic imaging process.