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US 5,352,553 AGranted
Transparent film and color image forming method
AssigneeCanon Kabushiki Kaisha
InventorsTatsuo Takeuchi, Koji Amemiya
Life of this patent
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Abstract
A transparent laminate film, including at least a first transparent resin layer comprising a transparent resin having a heat-resistance, and a second transparent resin layer disposed thereon comprising a transparent resin, wherein the transparent resin of the second transparent resin layer has a compatibility with a binder resin of a toner to be fixed thereon, and has a large elasticity than that of the binder resin of the toner at a fixing temperature of the toner.
Claims23
A method for forming a light-transmissive color image, comprising:
- (a) forming on a transparent laminate film a color toner image employing a toner which comprises at least a binder resin and a chromatic colorant;
- and
- (b) fixing the color toner image on the transparent laminate film by direct contact with a heat fixing roller together with applying heat and pressure wherein said transparent laminate film comprises at least a first transparent resin layer comprising a heat-resistant first transparent resin, and a second transparent resin layer disposed thereon comprising a second transparent resin;
- said second transparent resin of the second transparent resin layer being compatible with said binder resin of said toner to be fixed thereon, at a fixing temperature of said toner, wherein said second transparent resin and said binder resin being compatible do not form a visible boundary in a resultant toner image after fixing, and said second transparent resin has an elasticity 5 to 1,000 times that of the binder resin of the toner at the fixing temperature of said toner;
- wherein
- (i) said first transparent resin of said first transparent resin layer has a heat distortion temperature of at least 145.degree. C., wherein said first transparent resin is a resin selected from the group consisting of polyethylene terephthalate, polyamide and polyimide;
- and
- (ii) said second transparent resin of said second transparent resin layer has a storage elasticity modulus of 100-10,000 dyne/cm.sup.2 at 160.degree. C.
5 more elements
A method for forming a light transmissive color image comprising:
- (a) forming on a transparent laminate film a color toner image employing a dry toner which comprises at least a polyester binder resin and a chromatic colorant;
- and
- (b) fixing the color toner image on the transparent laminate film by direct contact with a heat fixing roller while applying heat and pressure, wherein said transparent laminate film comprises at least a first transparent resin layer comprising a heat-resistant first transparent resin having a heat distortion temperature of at least 145.degree. C., and a second transparent resin layer disposed thereon comprising a second transparent resin;
- said second transparent resin of the second transparent resin layer being compatible with said polyester binder resin of said toner to be fixed thereto, and said second transparent resin has a storage elasticity modulus which is 5 to 1000 times that of said toner of 160.degree. C.
1 more element
Dependencies are inferred from the claim text.