Electrostatographic apparatus having transport member with release oil-absorbing layer
View Patent ↗An electrostatographic reproduction apparatus includes: a primary imaging member for producing an electrostatic latent image on a receiver, a development station for applying toner particles to the latent image to form a developed toner image on the receiver, a fuser assembly for fixing the developed toner image to form a fused toner image on the receiver, and a transport member for transporting the receiver to or from the fuser assembly. The transport member includes a substrate and an oil-absorbing layer that contains inorganic particles dispersed in an organic binder and is capable of absorbing release oil applied to the receiver bearing the fused toner image.
1. An electrostatographic reproduction apparatus comprising:
a primary imaging member for producing an electrostatic latent image on a receiver;
a development station for applying toner particles to said latent image, thereby forming a developed toner image on said receiver;
a fuser assembly for fixing said developed toner image, thereby forming a fused toner image on said receiver; and
a transport member for transporting said receiver to or from said fuser assembly, said transport member comprising a substrate bearing an oil-absorbing layer that comprises inorganic particles, including at least one compound of alumina, dispersed in an organic binder, said layer being capable of absorbing release oil applied to said receiver bearing said fused toner image.
2. The electrostatographic reproduction apparatus of claim 1 , wherein said oil absorbing layer further includes a fluorosurfactant.
3. The electrostatographic reproduction apparatus of claim 2 , wherein said inorganic particles comprise a compound of aluminum selected from the group consisting of aluminum hydroxide, alumina hydrate, aluminum oxide, pseudo-boebmite, boebmite alumina, aluminum salts, and mixtures thereof.
4. The electrostatographic reproduction apparatus of claim 1 , wherein said inorganic particles comprise pseudo-boebmite.
5. The electrostatographic reproduction apparatus of claim 1 , wherein said organic binder is selected from the group consisting of starch or a modification product thereof, poly(vinyl alcohol) or a modification product thereof, SBR latex, NBR latex, cellulose derivatives, quatemary salt polymers, ether-substituted poly(phosphazenes), ether-substituted acrylates, ethylene oxide-vinyl alcohol copolymers, poly(vinyl butyral), poly(vinyl formal), polyoxazolines, aliphatic polyamides, poly(vinylpyrrolidone), and mixtures thereof.
6. The electrostatographic reproduction apparatus of claim 5 , wherein said organic binder is poly(vinyl alcohol).
7. The electrostatographic reproduction apparatus of claim 1 , wherein said oil-absorbing layer includes said organic binder in an amount of about 3 wt. % to about 30 wt. %, of said inorganic particles.
8. The electrostatographic reproduction apparatus of claim 7 , wherein said oil-absorbing layer includes said organic binder in an amount of about 5 wt. % to about 25 wt. %, of said inorganic particles.
9. The electrostatographic reproduction apparatus of claim 4 , wherein said oil-absorbing layer comprises pseudo-boehmite and poly(vinyl alcohol) in a weight ratio of about 3:1 to about 20:1.
10. The electrostatographic reproduction apparatus of claim 1 , wherein said oil-absorbing layer has a dried thickness of about 1 μm to about 50 μm.
11. The electrostatographic reproduction apparatus of claim 10 , wherein said oil-absorbing layer has a dried thickness of about 2 μm to about 40 μm.
12. The electrostatographic reproduction apparatus of claim 1 , wherein said substrate bearing said oil-absorbing layer is selected from the group consisting of a continuous web, a drum, and a roller.
13. The electrostatographic reproduction apparatus of claim 12 , wherein said substrate bearing said oil-absorbing layer is a continuous web.
14. The electrostatographic reproduction apparatus of claim 13 , wherein said continuous web has a thickness of about 50 μm to about 500 μm.
15. The electrostatographic reproduction apparatus of claim 14 , wherein said continuous web has a thickness of about 75 μm to about 300 μm.
16. The electrostatographic reproduction apparatus of claim 13 , wherein said continuous web includes a subbing layer.
17. The electrostatographic reproduction apparatus of claim 10 , wherein said oil-absorbing layer further comprises a fluorosurfactant.
18. The electrostatographic reproduction apparatus of claim 17 , wherein said fluorosurfactant is a water-soluble, ethoxylated nonionic fluorosurfactant.
19. The electrostatographic reproduction apparatus of claim 17 , wherein said oil-absorbing layer contains said fluorosurfactant in an amount of about 0.01 wt. % to about 10 wt. % of the total amount of said inorganic particles and said organic binder.
20. The electrostatographic reproduction apparatus of claim 19 , wherein said oil-absorbing layer contains said fluorosurfactant in an amount of about 0.02 wt. % to about 6 wt. % of the total amount of said inorganic particles and said organic binder.
21. The electrostatographic reproduction apparatus of claim 1 , wherein said transport member is adapted for duplex printing.
22. The electrostatographic reproduction apparatus of claim 1 , wherein said oil-absorbing layer further comprises matte beads.
23. The electrostatographic reproduction apparatus of claim 22 , wherein said matte beads comprise crosslinked polystyrene, crosslinked polyacrylate, or poly(tetrafluoroethylene) and have a diameter between about 1 μm and about 30 μm.
24. The electrostatographic reproduction apparatus of claim 23 , wherein said matte beads have a diameter between about 2 μm and about 20 μm.
25. The electrostatographic reproduction apparatus of claim 1 , wherein said oil-absorbing layer further comprises a crosslinking agent.
26. The electrostatographic reproduction apparatus of claim 25 , wherein said crosslinking agent comprises 2,3-dihydroxy-1,4-dioxane.
27. An electrostatographic reproduction apparatus comprising:
a primary imaging member for producing an electrostatic latent image on a receiver;
a development station for applying toner particles to said latent image, thereby forming a developed toner image on said receiver;
a fuser assembly for fixing said developed toner image, thereby forming a fused toner image on said receiver; and
a transport member for transporting said receiver to or from said fuser assembly, said transport member comprising a substrate bearing an oil-absorbing layer that comprises inorganic particles, including at least one compound of aluminum with a particle size sufficiently small to be essentially transparent, dispersed in an organic binder, said layer being capable of absorbing release oil applied to said receiver bearing said fused toner image.
28. The electrostatographic reproduction apparatus of claim 27 , wherein said oil absorbing layer further includes a fluorosurfactant.
29. The electrostatographic reproduction apparatus of claim 27 , wherein said oil-absorbing layer has a dried thickness of about 1 μm to about 50 μm.
30. The electrostatographic reproduction apparatus of claim 27 , wherein said oil-absorbing layer comprises pseudo-boehmite particles, dispersed in an organic binder.
31. The electrostatographic reproduction apparatus of claim 30 , wherein said pseudo-boebmite particles comprise a dispersed particle size of less than 0.5 microns.
32. The electrostatographic reproduction apparatus of claim 30 , wherein said oil absorbing layer further includes a fluorosurfactant.