US PATENT SUBCLASS 430 / 31
ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

31ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT {18}
32  DF  .~> Electrophoretic imaging, process, composition, or product {6}
39  DF  .~> Magnetic imaging
40  DF  .~> Manifold imaging, process, composition, or product
41  DF  .~> Migration imaging, process, composition, or product, e.g., electrosolography, etc.
42  DF  .~> To produce a color reproduction, i.e., color named, or more than one color specified {5}
48  DF  .~> Electrostatic image transfer
49  DF  .~> To produce printing surface
50  DF  .~> Deformation imaging, e.g., frost imaging, etc.
51  DF  .~> Persistent internal polarization imaging
52  DF  .~> Electrolysis imaging
53  DF  .~> Using ion or particle flow modulation
54  DF  .~> To produce multiple image on medium or plural radiant energy exposures of medium, e.g., image intensification using two images, or two exposures of same image, etc.
55  DF  .~> Charging simultaneous with imaging
56  DF  .~> Radiation-sensitive composition or product {10}
97  DF  .~> Post imaging process, finishing, or perfecting composition or product {12}
127  DF  .~> Process of making radiation-sensitive product {6}
135  DF  .~> Process of making radiation-sensitive composition {1}
137  DF  .~> Process of making developing composition

DEFINITION

Classification: 430/31

ELECTRIC OR MAGNETIC IMAGERY, E. G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT:

(under the class definition) Subject matter wherein the electrical conductivity of, the electrical charge on, the magnetic condition of, or the electrical emissivity of a medium is selectively altered by the action of electromagnetic radiation during imaging, and wherein a visible image is formed on the medium or latent image thereon which persists after imaging based upon difference in electrical or magnetic property described above; and when the visible or latent image is not formed by the action of electro-magnetic radiation, the image is finished as by development, fixing, transferring, or cleaning the surface, etc.; radiation-sensitive composition and product used in the process, process of making the composition and product, and finishing process, composition, and product used in the process.

(1) Note. The processes, compositions, and articles herein classified generally involve the application of a uniform electrostatic charge to a radiation-sensitive medium comprising a conductive support with a photoconductive insulator, which medium is then selectively exposed to radiation after the charge in accordance with the exposure and thereby produces an electrostatic image or latent image or the radiation-sensitive medium. Alternatively, the electrostatic charge, in image pattern, may be formed during the exposure to radiation. This image may be developed or rendered visible by applying particulate material or liquid droplets, charged or uncharged, to the electrostatic image. The particulate material may be caused to permanently adhere, by overcoating, fusion, or coalescence to the exposed medium

or it may be transferred to another surface and caused to adhere thereto, and the radiation-sensitive medium be cleaned and reused. These processes are sometimes referred to as "Xerography" and "Electrofax" processing.

(2) Note. Subcombinations of electric imagery directed to developing, transferring, or adhering alone or in combination with an imaging operation are classified herein to include compositions and articles used in developing fixing, transferring and adhering. Subcombinations of electric imagery directed to charging or cleaning, alone or in combination (without an imagery operation using radiation) are not classified herein, for which see the search notes below. However, subcombinations directed to charging or cleaning when combined with the imagery operation are classified herein.