Abstract:
A particle placing system wherein particulate material is placed in or on a softenable layer by pressing a donor uniformly coated with particulate material, alternatively, at least partially in softenable material against a free surface of a softenable layer or a substrate of a migration imaging member.
Abstract:
An improved electrostatographic imaging process wherein the developer contains a toner release effective amount of a fatty acid ester. The addition of minor amounts of these esters to the developer or independent treatment of the imaging surface with said materials during cyclic operation of an electrostatographic imaging system facilitates developed image transfer and removal of toner residues from the photoconductive surface of the imaging member. This invention has application in electrostatographic imaging systems employing either liquid or dry modes of development. Apparatus used in this imaging system are also contemplated within the scope of this invention.
Abstract:
A novel migration imaging system having a migration imaging member comrpising migration material in or on a softenable layer, also having a conductive receiving layer and a system for developing migration imaging members by applying a developing medium to an imaging member and having the imaging member adjacent a development electrode.
Abstract:
A method of electrostatographic imaging utilizing a gravure member having a conductive backing with a uniform pattern of lands and valleys thereon, with the lands having a surface of a photoconductive material. A developing medium is applied to the valleys of the gravure member, leaving the land areas substantially clean. After application of the developing medium, the gravure member is uniformly charged and then exposed to a light and shadow image. The exposed member is then brought into transfer configuration with a transfer web.
Abstract:
A METHOD OF DEVELOPMENT OF AN ELECTROSTAIC LATENT IMAGE IS GIVEN WHEREIN A CHEMICALLY STABLE, NONAQUEOUS, AMBIPOLAR, LIQUID DEVELOPER COMPRISING AN OLEAGINOUS VEHICLE, SOLID COLORAT PARTICLES, A DISPERSANT SOLUBLE IN THE LIQUID DEVELOPER WHICH IS CAPABLE OF SUBSTANTIALLY SUPPRESSING BACKGROUND DEPOSITS, AND A FIXING AGENT MISCIBLE WITH THE LIQUID WHICH PENETRATES THE COPY PAPER IS EMPLOYED TO DEVELOP AN ELECTROSTATIC LATENT IMAGE BY PRESENTING THE DEVELOPER TO THE IMAGE BEARING SURFACE BY AN APPLICATOR HAVING A SUBSTANTIALLY UNIFORMLY PATTERNED SURFACE OF RAISED PORTIONS AND DEPRESSED PORTIONS WHICH CONTAIN THE DEVELOPER.
Abstract:
AN ELECTROSTATOGRAPHIC IMAGING SYSTEM WHEREIN AN ELECTROSTATIC LATENT IMAGE IS DEVELOPED BY PLACING THE IMAGEING SURFACE IN DEVELOPING CONFIGURATION WITH A PATTERNED APPLICATOR SURFACE HAVING A SUBSTANTIALLY UNIFORM DISTRIBUTION OF RAISED PORTIONS OR "LANDS" AND DEPRESSED PORTIONS OR "VALLEYS" AND CONTAINING A RELATIVELY NON-CONDUCTIVE LIQUID DEVELOPER IN THE DEPRESSED PORTIONS THEREOF WHILE THE RAISED PORTIONS ARE SUBSTANTIALLY FREE OF DEVELOPER.
Abstract:
A method and apparatus for developing an electrostatic charge pattern with an ultrasonically generated uncharged droplet mist. The apparatus comprises an ultrasonic transducer which is energized from a power source and which has the capability of generating uncharged droplet mist particles from a liquid material. The droplet mist so created is brought into contact with the electrostatic charge pattern to effect its development without regard to image or charge polarity.
Abstract:
AN ELECTROSTATOGRAPHIC IMAGING SYSTEM EMPLOYING A LIQUID DEVELOPER AND A CYCLING OR REUSABLE PHOTOCONDUCTOR IS PROVIDED WHEREIN A SMALL AMOUNT OF A LEWIS ACID OR LEWIS BASE IS CYCLICALLY APPLIED TO THE PHOTOCONDUCTOR SURFACE. THE LEWIS ACID OR BASE IS PREFERABLY A CONSTITUENT OF THE LIQUID DEVELOPER AND ACTS TO MAINTAIN OR REJUVENATE THE ELECTRICAL PROPERTIES OF THE PHOTOCONDUCTOR.