公开(公告)号：US3810776A

公开(公告)日：1974-05-14

申请号：US26777472

申请日：1972-06-30

Applicant: IBM

Inventor： BANKS B ,  GRAHAM A

IPC: G03G15/20 ,  G03G13/20

CPC classification number: G03G15/2025

Abstract: OFFSET OF TONER TO A HEATED FUSING ROLL IS PREVENTED BY COATING THE FUSING ROLL WITH AN ADHESION PREVENTING LAYER OF AN IMMISCIBLE DISPERSION OF A HIGH VISCOSITY, LOW SURFACE TENSION COMPONENT SUCH AS ZINC OR ALUMINUM STEARATE OR BEHENATE AND LOW VISCOSITY, LOW SURFACE TENSION COMPONENT SUCH AS 50 CS. SILICONE OIL.

公开(公告)号：BR7304875D0

公开(公告)日：1974-09-05

申请号：BR487573

申请日：1973-06-29

Applicant: IBM

Inventor： BANKS B ,  GRAHAM A

IPC: G03G15/20 ,  G03G15/22

Abstract: 1402240 Electrography INTERNATIONAL BUSINESS MACHINES CORP 30 May 1973 [30 June 1972] 25818/73 Heading G2H A heat-fixable resinous toner image carried by a substrate is fixed by heating the powder image by means of a fixing rotary member having a release agent on the surface thereof, the release agent comprising two liquids immiscible in one another and chemically stable at the temperature of the surface of the rotary member, the liquids each having a low surface tension relative to the toner and one of the liquids having a viscosity which is high relative to the other at the temperature of the surface of the rotary member. Preferably the high viscosity component is solid at room temperature with a well defined melting point and is wettable by the low viscosity liquid, so that the release agent mixture can be formed into a block which can be progressively melted against the surface of a heated spreader roll in rolling contact with a fusing roll that fixes the image. Suitable high viscosity components include a 2000 cs. silicone oil and a number of specified metallic soaps or the saturated fatty acids from which they are derived, the latter being used in conjunction with a fusing roll surface of aluminium or zinc with which the acid will react to form the soap in situ. The 2000 cs. silicone oil or the soaps (but not the free acids) may also be used with gold surfaced fusing rolls. The preferred release agent comprises zinc stearate or behenate as the high viscosity component, mixed with a 50 cs. silicone oil, and is used in conjunction with an aluminium surfaced fusing roll.

公开(公告)号：SE331763B

公开(公告)日：1971-01-11

申请号：SE1633265

申请日：1965-12-16

Applicant: IBM

Inventor： GRAHAM A ,  MITCHELL W ,  DUELTGEN R ,  SWEAZY H

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/73 ,  G11B5/842 ,  B29D17/00 ,  G11B5/68 ,  G11B5/84

Abstract: A magnetic layer is formed by coating a mixture of polymer solution, polymerizable monomer catalyst, and magnetic material on to a mould, polymerizing the monomer, and then stripping the coating from the mould. The constituents of the mixture may be P.V.C., 1,3-butylene dimethacrylate, t-butyl perbenzoate, and acicular g -Fe2O3 resp. with 1,1,1-trichloroethan as solvent. The mixture may include plasticizers, e.g. dioctyl phthalate, and heat stabilizers, e.g. Ba-Cd Zn, for the polymer; a wetting agent for the Fe2O3, e.g. diethylene glycol monolaurate; and a thixotropic agent to prevent settling, e.g. colloidal S1O2, or carbon black. In the example, a mixture containing the Fe2O3 was thinned with a mixture containing P.V.C., the monomer being present in both, and was sprayed on to the inner surface of a cylindrical steel mould, which may initially have been coated with a silicone, e.g. dimethylpolysiloxane. A further mixture containing P.V.C., and a non-acrylic monomer, was sprayed over the first layer (to form the base). The mould was then heated at 370 DEG F. and the layers stripped from the mould.