DIRECT OPTICAL PRINTING (DOP) APPLICATION TO PAPER MARKING, NOVEL MATERIALS
Original Publication Date: 1982-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
An imaging process utilizing a flying spot laser scanner which illuminates a layer of a low melt toner on a substrate. The toner is fixed to the substrate in areas where the spot strikes the toner while the toner in unexposed areas remains unfixed after imaging. The toner, the substrate or both may contain a plasticizer which plasticizes the resin component of toner. Moreover, the toner melt viscosity and fixing energy requirements may be reduced 50 percent compared to standard toners when at least a portion of pigment, e.g., carbon black, in the toner is replaced with a thermally conductive component such as iron oxide. Unfixed toner in the unexposed areas may be removed by any suitable means as a magnetic brush type device. Typical plasticizers include crystalline plasticizers such as diphenyl phthalates, pentaerythritol tetrabenzoate, triphenylamine derivatives, low molec-ular weight polycaprolactones and polyepoxies. Typical thermoplastic resins which may be utilized include suitable vinyl resins such as vinyl esters, vinyl ethers, vinyl ketones, vinylidene halides, styrene and styrene copolymers, polyesters, poly-carbonates, polyamides, and the like. Other thermally conductive components for the toner include materials such as iron, ferrites, copper, aluminum, nickel, steel, aluminum oxide and the like.