This disclosure is generally directed to layered imaging members, photoreceptors, photoconductors, and the like. More specifically, the present disclosure is directed to multilayered flexible, belt imaging members, or devices comprised of an optional supporting medium like a substrate, a photogenerating layer, a charge transport layer, including a plurality of charge transport layers, such as a first charge transport layer and a second charge transport layer, an optional adhesive layer, an optional hole blocking or undercoat layer, and an overcoating layer. In embodiments, the overcoating layer contains and is generated from an acrylated polyol, a polyalkylene glycol, a crosslinking component, a charge transport component, and a suitable alcohol mixture, such as a mixture of an alkyl alcohol and DOWANOL®, a series of glycol monoethers, such as 1-methoxy-2-propanol, available from Dow Chemicals.
The photoconductors illustrated herein, in embodiments, have excellent wear resistance, extended lifetimes, elimination or minimization of imaging member scratches, and which scratches can result in undesirable print failures where, for example, the scratches are visible on the final prints generated, and more specifically, increased crack, abrasion, and scratch resistance, minimal leaching of hole transport molecules from the charge transport layer, and the like as compared to similar photoconductors wherein only a glycol monoether is used to formulate the photogenerating dispersion. Additionally, in embodiments the photoconductors disclosed herein possess excellent, and in a number of instances low Vr (residual potential), and allow the substantial prevention of Vr cycle up when appropriate; high sensitivity; low acceptable image ghosting characteristics; low background and/or minimal charge deficient spots (CDS); and desirable toner cleanability.
Also included within the scope of the present disclosure are methods of imaging and printing with the photoresponsive or photoconductors illustrated herein. These methods generally involve the formation of an electrostatic latent image on the imaging member, followed by developing the image with a toner composition comprised, for example, of thermoplastic resin, colorant, such as pigment, charge additive, and surface additives, reference U.S. Pat. Nos. 4,560,635; 4,298,697 and 4,338,390, the disclosures of which are totally incorporated herein by reference, subsequently transferring the image to a suitable substrate, and permanently affixing the image thereto. In those environments wherein the device is to be used in a printing mode, the imaging method involves the same operation with the exception that exposure can be accomplished with a laser device or image bar. More specifically, flexible belts disclosed herein can be selected for the Xerox Corporation iGEN3® machines that generate with some versions over 100 copies per minute. Processes of imaging, especially xerographic imaging and printing, including digital, and/or color printing, are thus encompassed by the present disclosure. The photoconductors are in embodiments sensitive in the wavelength region of, for example, from about 400 to about 900 nanometers, and in particular from about 650 to about 850 nanometers, thus diode lasers can be selected as the light source. Moreover, the photoconductive members of this disclosure are useful in high resolution color xerographic applications, particularly high speed color copying and printing processes.