US5166041A
Expired / Lapsed
US
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Near infrared ray-decolorizable recording material
Assignee: Resonac Holdings Corp
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Filing: 1991-07-22
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Granted: 1992-11-24
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Expires: 2011-07-22
Abstract
Abstract The present invention relates to a near infrared ray-decolorizable recording material comprising a near infrared ray-absorbing cationic dye-borate anion complex having the formula (I): ##STR1## wherein D + represents a cationic dye having absorptions in the near infrared region; R 1 , R 2 , R 3 , and R 4 independently represent an alkyl, aryl, alkaryl, allyl, aralkyl, alkenyl, alkynyl, silyl, alicyclic, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl, or substituted silyl, with the proviso that at least one of R 1 , R 2 , R 3 , and R 4 represents an alkyl group having 1 to 8 carbon atoms.
Inventors
- 👤 Katsumi Murofushi
- 👤 Yoshikazu Hosoda
- 👤 Yoke Ai Gan
- 👤 Kunio Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:43
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; C09B; C09B23/00; C09B23/0008; C09B23/0016; C09B23/0041; C09B23/0066; C09B23/02; C09B23/08; C09B23/086; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/735; G03C7/00; G03C7/02; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0926; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/127; Y10S430/145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
245 words
A near infrared ray-decolorizable recording material comprising (i) a near infrared ray-absorbing cationic dye-borate anion complex having the formula (I): ##STR14## wherein D + represents a cationic dyestuff having absorptions in the near infrared region; R 1 , R 2 , R 3 , and R 4 independently represent an alkyl, aryl, alkaryl, allyl, aralkyl, alkenyl, alkynyl, silyl, alicyclic, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl, or substituted silyl, with the proviso that at least one of R 1 , R 2 , R 3 , and R 4 represent an alkyl group having 1 to 8 carbon atoms, and (ii) a sensitizer having the formula (II): ##STR15## wherein R 5 , R 6 , R 7 , and R 8 independently represent an alkyl, aryl, allyl, alkaryl, aralkyl, alkenyl, alkynyl, silyl, alicyclic, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl, or substituted silyl, with the proviso that at least one of R 5 , R 6 , R 7 , and R 8 represent an alkyl group having 1 to 8 carbon atoms; and R 9 , R 10 , R 11 , and R 12 independently represent a hydrogen, an alkyl, aryl, alkaryl, allyl, aralkyl, alkenyl, alkynyl, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, or substituted alkynyl.
Claim 2
Dependent Claim
245 words
A near infrared ray-decolorizable recording material comprising (i) a near infrared ray-absorbing cationic dye-borate anion complex having the formula (I): ##STR14## wherein D + represents a cationic dyestuff having absorptions in the near infrared region; R 1 , R 2 , R 3 , and R 4 independently represent an alkyl, aryl, alkaryl, allyl, aralkyl, alkenyl, alkynyl, silyl, alicyclic, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl, or substituted silyl, with the proviso that at least one of R 1 , R 2 , R 3 , and R 4 represent an alkyl group having 1 to 8 carbon atoms, and (ii) a sensitizer having the formula (II): ##STR15## wherein R 5 , R 6 , R 7 , and R 8 independently represent an alkyl, aryl, allyl, alkaryl, aralkyl, alkenyl, alkynyl, silyl, alicyclic, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl, or substituted silyl, with the proviso that at least one of R 5 , R 6 , R 7 , and R 8 represent an alkyl group having 1 to 8 carbon atoms; and R 9 , R 10 , R 11 , and R 12 independently represent a hydrogen, an alkyl, aryl, alkaryl, allyl, aralkyl, alkenyl, alkynyl, or saturated or unsaturated heterocyclic group, substituted alkyl, substituted aryl, substituted alkaryl, substituted allyl, substituted aralkyl, substituted alkenyl, or substituted alkynyl.
Claim 3
Dependent Claim
27 words
A decolorizable toner comprising a near infrared ray-decolorizable recording material according to claim 1 as a colorant, whereby a set portion is decolorized with near infrared rays.
Claim 4
Dependent Claim
27 words
A decolorizable ink comprising a near infrared ray-decolorizable recording material according to claim 1 as a colorant, wherein a set portion is decolorized with near infrared rays.
Claim 5
Dependent Claim
44 words
A near infrared ray-decolorizable recording material as claimed in claim 1, wherein the sensitizer of formula (II) is present in an amount of 0.01 to 10 parts by weight, based upon 1 part by weight of the cationic dye-borate anion complex of formula (I).
Claim 6
Dependent Claim
44 words
A near infrared ray-decolorizable recording material as claimed in claim 1, wherein the sensitizer of formula (II) is present in an amount of 0.1 to 5 parts by weight, based upon 1 part by weight of the cationic dye-borate anion complex of formula (I).
Claim 7
Dependent Claim
41 words
A decolorizable toner as claimed in claim 2, wherein the sensitizer of formula (II) is present in an amount of 0.01 to 10 parts by weight, based upon 1 part by weight of the cationic dye-borate anion complex of formula (I).
Claim 8
Dependent Claim
41 words
A decolorizable toner as claimed in claim 2, wherein the sensitizer of formula (II) is present in an amount of 0.1 to 5 parts by weight, based upon 1 part by weight of the cationic dye-borate anion complex of formula (I).
Claim 9
Dependent Claim
41 words
A decolorizable ink as claimed in claim 3, wherein the sensitizer of formula (II) is present in an amount of 0.01 to 10 parts by weight, based upon 1 part by weight of the cationic dye-borate anion complex of formula (I).
Claim 10
Dependent Claim
39 words
A decolorizable ink as claimed in claim 3, wherein the sensitizer of formula (II) is present in an amount of 0.1 to 5 parts by weight based upon 1 weight of the cationic dye-borate anion complex of formula (I).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |