Browse Prior Art Database

TRANSFER OF LIQUID DEVELOPED IMAGES

IP.com Disclosure Number: IPCOM000023569D
Original Publication Date: 1978-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 359K

Publishing Venue

Xerox Disclosure Journal

Abstract

Electrostatic images which are developed with liquid devel-opers containing alkyd or similar resins are difficult to transfer to various substrates, for example polymer sheets, because the alkyd resins become firmly bonded to photoconduc-tor surface materials such as selenium. This problem has been overcome by spray coating the alkyd resin developed images upon the photoconductor surface with a polymer material containing a surfactant or other agent which at least reduces the bond between the alkyd resin and the photoconductor surface; drying the coated developed image on the photocoriduc-tor surface and transferring the dried coated developed image to receiver sheets (substrates) by pressure transfer. This process permits the transfer of alkyd resin containing developed images to polymer substrates to form high resolution transparencies. It appears that the surfactants or other agents incorporated in the polymer reduce the adhesion or bond between the alkyd resin and the photoconductor material such as selenium.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

TRANSFER OF LIQUID DEVELOPED Proposed Classification
IMAGES U.S. Cl. 355/10
Joseph G. Sankus, Jr. mt. Cl. G03g 15/10

Electrostatic images which are developed with liquid devel-
opers containing alkyd or similar resins are difficult to
transfer to various substrates, for example polymer sheets,
because the alkyd resins become firmly bonded to photoconduc-
tor surface materials such as selenium. This problem has been
overcome by spray coating the alkyd resin developed images
upon the photoconductor surface with a polymer material
containing a surfactant or other agent which at least reduces
the bond between the alkyd resin and the photoconductor
surface; drying the coated developed image on the photocoriduc-
tor surface and transferring the dried coated developed image
to receiver sheets (substrates) by pressure transfer. This
process permits the transfer of alkyd resin containing
developed images to polymer substrates to form high resolution
transparencies. It appears that the surfactants or other
agents incorporated in the polymer reduce the adhesion or bond
between the alkyd resin and the photoconductor material such
as selenium.

A typical alkyd or similar resin containing liquid developer
comprises a colorant such as pigment particles, e.g., carbon
black; at least one resin selected from the group consisting
of alkyd resin, phenol resin, vinyl resin and the like; and a
carrier liquid in which the colorant is dispersed. The
electrostatic latent image carried up...