Claims
- 1. A fixing method comprising:
- feeding a toner-receiving material carrying a toner image on a surface thereof, the toner comprising a binder resin and a colorant, wherein the binder resin contains (a) a first component of a low molecular weight in amounts of less than 80 wt. % detectable as an extract in 6 hours of extraction, and (b) a second component in amounts of at least 20 wt. % detectable as an extraction residue after 6 hours of extraction, said second component including (c) a third component of a tetrahydrofuran-non-extractable matter in amounts of below 20 wt. % detectable as an extraction residue after 72 hours of extraction; each said extraction being a Soxhlet extraction with tetrahydrofuran, wherein the toner shows a dynamic modulus and a loss modulus, respectively at 200.degree. C. and 0.1 Hz, which are substantially unchanging with time;
- passing the toner-receiving material carrying the toner image between a heated fixing roller and a pressing roller to fix the toner image under heating and pressing onto the surface of the toner-receiving material; and
- cleaning the fixing roller surface with a cleaning member.
- 2. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning web.
- 3. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning web impregnated with silicone oil.
- 4. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning pad.
- 5. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning pad impregnated with silicone oil.
- 6. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning roller.
- 7. The fixing method according to claim 1, wherein the fixing roller surface is cleaned with a cleaning roller impregnated with silicone oil.
- 8. The fixing method according to claim 1, wherein the toner image is fixed under contact with the fixing roller having a surface temperature of 150.degree.-250.degree. C.
- 9. The fixing method according to claim 1, wherein the toner image is fixed under contact with the fixing roller having a surface temperature of 150.degree.-230.degree. C.
- 10. The fixing method according to claim 1, wherein the toner image is fixed under heating and an abutting pressure of at least 1 kg/cm.sup.2 acting between the fixing roller and the pressing roller.
- 11. The fixing method according to claim 1, wherein the extraction residue after 6 hours is at least 2 times the extraction residue after 72 hours.
- 12. The fixing method according to claim 1, wherein the toner shows a dynamic modulus of 1.times.10.sup.3 -1.times.10.sup.5 dyn/cm.sup.2 and a loss modulus of 1.times.10.sup.2 -5.times.10.sup.4 dyn/cm.sup.2 as respectively measured at 200.degree. C. and 0.1 Hz, and the dynamic modulus is larger than the loss modulus.
- 13. The fixing method according to claim 1, wherein the extraction residue after 6 hours is 20-80 wt. % of the binder resin.
- 14. The fixing method according to claim 1, wherein the extraction residue after 6 hours is 25-70 wt. % of the binder resin.
- 15. The fixing method according to claim 1, wherein the extraction residue after 72 hours is below 15 wt. % of the binder resin.
- 16. The fixing method according to claim 1, wherein the extraction residue after 6 hours is 2-30 times the extraction residue after 72 hours.
- 17. The fixing method according to claim 1, wherein the moduli measured after holding the toner for 60 min. at 200.degree. C. are below two times the moduli before the holding.
- 18. The fixing method according to claim 1, wherein the moduli measured after holding the toner for 60 min. at 200.degree. C. are within the range of from 0.5 to below 2 times the moduli before the holding.
- 19. The fixing method according to claim 1, wherein the moduli measured after holding the toner for 60 min. at 200.degree. C. are within the range of 0.8-1.8 times the moduli before the holding.
- 20. The fixing method according to claim 1, wherein said binder resin comprises a vinyl polymer, a vinyl copolymer, or a mixture thereof.
- 21. The fixing method according to claim 1, wherein said binder resin comprises a crosslinked vinyl polymer, a crosslinked vinyl copolymer, or a mixture thereof.
- 22. The fixing method according to claim 1, wherein said binder resin comprises a styrene polymer, a styrene copolymer, or a mixture thereof.
- 23. The fixing method according to claim 1, wherein said binder resin comprises a crosslinked styrene polymer, a crosslinked styrene copolymer, or a mixture thereof.
- 24. The fixing method according to claim 1, wherein said binder resin comprises a vinyl polymer, a vinyl copolymer or a mixture thereof having JIS acid value of at most 100 mgKOH/g.
- 25. The fixing method according to claim 1, wherein said binder resin comprises a vinyl polymer, a vinyl copolymer or a mixture thereof having a JIS acid value of 2-70 mgKOH/g.
- 26. The fixing method according to claim 1, wherein said binder resin comprises a vinyl polymer, a vinyl copolymer or a mixture thereof having a JIS acid value of 5-60 mgKOH/g.
- 27. The fixing method according to claim 1, wherein said binder resin comprises a polyester resin.
- 28. The fixing method according to claim 1, wherein said binder resin comprises a polyester resin having a JIS acid value of at most 100 mgKOH/g.
- 29. The fixing method according to claim 1, wherein said binder resin comprises a polyester resin having a JIS acid value of at most 50 mgKOH/g.
- 30. The fixing method according to claim 1, wherein said binder resin contains an ultra-high molecular weight component formed by melt-kneading a resin material containing a THF-insoluble and highly crosslinked high molecular weight having a carboxyl group together with a metal-containing compound linkable with the carboxyl group to sever the crosslinked high molecular weight component and cause re-crosslinking of the severed crosslinked high-molecular weight component with the metal-containing compound.
- 31. The fixing method according to claim 1, wherein said binder resin contains an azo metal complex represented by the following formula: ##STR11## wherein M denotes a coordination center metal, inclusive of metal elements having a coordination number of 6, such as Sc, Ti, V, Cr, Co, Ni and Fe; Ar denotes an aryl group, such as phenyl or naphthyl, capable of having a substituent, examples of which may include: nitro, halogen, carboxyl, anilide, and alkyl and alkoxy having 1-18 carbon atoms; X, X', Y and Y' independently denote --O--, --CO--, --NH--, or --NR-- (wherein R denotes an alkyl having 1-4 carbon atoms; and A.sup..sym. denotes hydrogen, sodium, potassium, ammonium or aliphatic ammonium).
- 32. The fixing method according to claim 1, wherein said binder resin contains an organic acid metal complex represented by the following formula: ##STR12## wherein M denotes a coordination center metal, inclusive of metal elements having a coordination number of 6, such as Cr, Co, Ni and Fe; A denotes ##STR13## capable of having a substituent, ##STR14## (X denotes hydrogen, halogen, or nitro), ##STR15## (R denotes hydrogen, C.sub.1 -C.sub.18 alkyl or C.sub.1 -C.sub.18 alkenyl); Y.sup..sym. denotes a counter ion, such as hydrogen, sodium, potassium, ammonium, or aliphatic ammonium; and Z denotes --O-- or --CO.cndot.O--.
- 33. The fixing method according to claim 1, wherein the third component in the toner is contained in an amount of 1 to 14.2 wt. % based on the binder resin.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-332691 |
Nov 1990 |
JPX |
|
Parent Case Info
This application is a division of application Ser. No. 07/797,915 filed Nov. 26, 1991 now U.S. Pat. No. 5,330,871.
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Divisions (1)
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Number |
Date |
Country |
Parent |
797915 |
Nov 1991 |
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