Abstract:
Disclosed is an imaging method based upon the chemical intensification of a polyene image dispersed in an imagewise manner upon a substrate. The method involves contacting the film with maleic anhydride to form a reaction product between the polyene and maleic anhydride. This reaction product is then contacted with a base capable of converting the carboxylic acid anhydride group of the maleic anhyride to its corresponding salt and the so-formed salt is contacted with a solution of a dye containing a colored cation capable of replacing the cation of the salt.
Abstract:
An imaging method based upon the ultraviolet light induced acid catalyzed degradation of a composition comprising at least one acid degradable polymer of the formula:
WHEREIN R is an aliphatic hydrocarbon radical of 1 - 6 carbon atoms, a chlorinated aliphatic hydrocarbon radical of 1 - 6 carbon atoms, or a nitrile substituted aliphatic hydrocarbon radical of 1 - 5 carbon atoms; and N IS THE DEGREE OF POLYMERIZATION. In the above imaging method one or more of the above degradable polymers is formulated with (1) a polymer capable of undergoing photoinduced dehydrohalogenation, and (2) an electron acceptor. Upon irradiation of the film containing such materials, an acid produced as a result of dehydrohalogenation attacks the degradable polymer thus causing its degradation. The effects of this degradation in the exposed regions of the film are generally visually discernable thus a permanent image is generated without further development or fixing being required.
Abstract translation:一种基于紫外光诱导的酸催化降解的成像方法,该组合物包含至少一种下式的酸可降解聚合物:H | --- CO --- | R n WHEREIN R是1-6碳的脂族烃基 1-6个碳原子的氯代脂族烃基或1-5个碳原子的腈取代的脂族烃基; 而N是聚合度。
Abstract:
Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula:
WHEREIN X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 104). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.
Abstract:
A process for charging layered imaging members by the transfer of ions thereto from an ionically conductive medium. In one embodiment the process comprises contacting an ionically conductive liquid or polymer with the surface of the imaging member; and applying a voltage to the medium while moving the imaging member, thereby enabling the transfer of ions to said member.
Abstract:
A photoresponsive imaging member comprised of a photogenerating layer, and a charge transport layer comprised of a mixture of a biphenyl diamine and a polysilylene.
Abstract:
Photoresponsive imaging members comprised of hole transporting polysilylene compounds with a single peak molecular weight distribution, and wherein the polysilylenes selected have excluded therefrom molecular weight fractions of less than 50,000 thereby enabling, for example, the resulting imaging members to be substantially resistant to liquid ink developer compositions for an extended number of imaging cycles when these members are incorporated into electrostatographic imaging devices.
Abstract:
A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises an electrically inactive organic resinous material containing from about 15 to about 75 percent by weight of N,N'-diphenyl-N,N'-bis(phenylmethyl)-[1,1'-biphenyl]-4,4'-diamine. The charge transport layer while substantially non-absorbing in the spectral region of intended use is "active" in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.
Abstract:
A photoconductive imaging member comprised of a supporting substrate, a photogenerating layer comprised of a ladder polymer selected from the group consisting of those represented by the following formulas: and mixtures thereof, wherein n represents the number of segments, and a charge transport layer.
Abstract:
A process for charging layered imaging members by the transfer of ions thereto from an ionically conductive gel medium. In particular, the gel is a hydrogel selected from polyacrylate, polyacrylamide, polyvinyl ether, polypyrrolidinone and polyhydroxyethylmethacrylate. The layered imaging members may be photoreceptors, photoconductive imaging members and dielectric charge receivers for ionography.
Abstract:
A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises a polycarbonate resin containing from about 10 to about 75 percent by weight of: wherein X is selected from the group consisting of (ortho) CH3, (meta) CH3, (para) CH3, (ortho) C1, (meta) C1 and (para) C1. The charge transport layer while substantially non-absorbing in the spectral region of intended use is "active" in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.