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US5250996A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for fixing full color toner images

Assignee: Fujifilm Business Innovation Corp
•
Filing: 1992-05-13
•
Granted: 1993-10-05
•
Expires: 2012-05-13
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Abstract

Abstract A method for fixing a full color toner image by inserting a transfer medium to which a toner image is transferred, between a pair of rolls of a fixing apparatus, and pressing the medium therebetween, wherein the toner image is formed of a full color toner prepared by dispersing a colorant into a polyester resin containing a diol component represented by the following general formula (I) as a constituent and having a softening point of 100° to 120° C., as measured by a ring and ball method, a glass transition temperature of 55° C. or more, a Gardner color scale of 2 or less and a haze value of 15 or less, and the fixing operation is conducted while supplying a functional group-containing organopolysiloxane having a viscosity of 10 to 100,000 cs at 25° C. to a roll in contact with the toner image, whereby the full color toner image can be stably fixed without wrapping of the transfer medium around the roll and offset, and the fixed image having good image quality can be obtained: ##STR1## wherein R represents an ethylene group or a propylene group, each of x and y is an integer of 1 or more, and x+y is 2 to 6.

Inventors

  • 👤 Yutaka Sugizaki
  • 👤 Hiroshi Takayama
  • 👤 Hideyuki Akagi
  • 👤 Takashi Imai
  • 👤 Susumu Saito
  • 👤 Yoshio Shoji
  • 👤 Yasuhiro Uehara
  • 👤 Masanori Ichimura
  • 👤 Tomohiro Ohkawa
  • 👤 Manabu Serizawa
  • 👤 Yasuo Yamamoto
  • 👤 Michio Take
  • 👤 Satoshi Inoue

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 10:49
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08742; G03G9/08755; G03G13/00; G03G13/20; G03G15/00; G03G15/01; G03G15/0105; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 274 words
A method for fixing a full color toner image by inserting a transfer medium to which a toner image is transferred, between a pair of rolls of a fixing apparatus, and pressing the medium therebetween, wherein said toner image is formed of a full color toner prepared by dispersing a colorant into a polyester resin containing a diol component represented by general formula (I) as a constituent and having a softening point of 100° to 120° C., as measured by a ring and ball method, a glass transition temperature of 55° C. or more, a Gardner color scale of 2 or less and a haze value of 15 or less, and the fixing operation is conducted while supplying a silicone composition containing at least a functional group-containing organopolysiloxane having a viscosity of 10 to 100,000 cs at 25° C. represented by general formula (II) to a roll in contact with said toner image: ##STR5## wherein R represents an ethylene group or a propylene group, each of x and y is an integer of 1 or more, and x+y is 2 to 6, ##STR6## wherein A represents --R 1 NH 2 , --R 1 NHR 2 NH 2 , --R 1 --O--Y f --H or -H (wherein each of R 1 and R 2 represents an alkylene group having 1 to 8 carbon atoms and Y represents an alkyleneoxy group having 2 to 4 carbon atoms), b is 0 to 10, c is 10 to 1,000, d is 2 or 3, e is 0 or 1, f is 0 to 10, d+e is 3, and b and c are not 0 at the same time.
Claim 2
Independent Claim 274 words
A method for fixing a full color toner image by inserting a transfer medium to which a toner image is transferred, between a pair of rolls of a fixing apparatus, and pressing the medium therebetween, wherein said toner image is formed of a full color toner prepared by dispersing a colorant into a polyester resin containing a diol component represented by general formula (I) as a constituent and having a softening point of 100° to 120° C., as measured by a ring and ball method, a glass transition temperature of 55° C. or more, a Gardner color scale of 2 or less and a haze value of 15 or less, and the fixing operation is conducted while supplying a silicone composition containing at least a functional group-containing organopolysiloxane having a viscosity of 10 to 100,000 cs at 25° C. represented by general formula (II) to a roll in contact with said toner image: ##STR5## wherein R represents an ethylene group or a propylene group, each of x and y is an integer of 1 or more, and x+y is 2 to 6, ##STR6## wherein A represents --R 1 NH 2 , --R 1 NHR 2 NH 2 , --R 1 --O--Y f --H or -H (wherein each of R 1 and R 2 represents an alkylene group having 1 to 8 carbon atoms and Y represents an alkyleneoxy group having 2 to 4 carbon atoms), b is 0 to 10, c is 10 to 1,000, d is 2 or 3, e is 0 or 1, f is 0 to 10, d+e is 3, and b and c are not 0 at the same time.
Claim 3
Dependent Claim 35 words
A method for fixing a full color toner image as claimed in claim 1, wherein said polyester resin having a softening point of 105° to 115° C. as measured by a ring and ball method.

References Cited (Backward Citations)

US4549803A Cited
US4588668A Cited
US4565762A Cited
US4722951A Cited
US4939059A Cited
US4863824A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-10-04 1997-04-05 1997-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-10-04 2001-04-05 2001-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-10-04 2005-04-05 2005-10-05 $7700.00 Window Closed / Lapsed

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