Abstract: An electrophotographic photosensitive member includes, in the following order, a support member, an undercoat layer adjacent to the support member, and a photosensitive layer adjacent to the undercoat layer. The undercoat layer contains a polymer produced by polymerizing a composition containing a crosslinking agent and a compound expressed by general formula (1): wherein R1 to R11 are defined in the specification.
Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is partially crosslinked, wherein the crosslinking is achieved by incorporating a small amount of compatible thermalsetting resins into the layer. Incorporation of these resins have been shown to increase charge transport life.
Type:
Grant
Filed:
August 21, 2007
Date of Patent:
April 12, 2011
Assignee:
Xerox Corporation
Inventors:
Liang-Bih Lin, Daniel V. Levy, Jin Wu, Robert W. Hedrick, Linda Ferrarese
Abstract: An image forming method, including charging a photoreceptor with a charger contacting thereto; irradiating the photoreceptor to form an electrostatic latent image thereon; developing the electrostatic latent image with a toner to form a toner image on the photoreceptor; transferring the toner image onto a recording material directly or through an intermediate transferer; and fixing the toner image on the recording material, wherein the toner includes a binder resin; a colorant; a composition having a low softening point; and an external additive, and wherein a surface resistivity Rse [?] of the charger and a volume resistivity Rsw [?·cm] of the composition having a low softening point satisfy the following relationship: 0.8×10?1Rse<Rvw<1.5×10Rse.
Abstract: A toner for development of electrostatic images comprising carbon black as a colorant, wherein the carbon black has the following features:
(1) the primary particle diameter being within a range of 28 to 60 nm;
(2) the DBP oil absorption being within a range of 40 to 75 ml/100 g; and
(3) the pH being within a range of 6.0 to 10.0, and a production process of the toner by a suspension polymerization process.