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US4983493A Expired / Lapsed US ⏱️ 0.0 years remaining

Dyes for heat sensitive transfer recording

Assignee: Fujifilm Holdings Corp
•
Filing: 1988-07-14
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Granted: 1991-01-08
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Expires: 2008-07-14
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Abstract

Abstract A dye for heat sensitive transfer recording represented by formula (I): ##STR1## wherein Q 1 represents an atomic group, which includes at least one nitrogen atom, which is required, together with the carbon atoms to which said atomic group is bonded, to form an at least five membered nitrogen containing heterocyclic ring; R 1 represents an acyl group or a sulfonyl group; R 2 represents a hydrogen atom or an aliphatic group which has from 1 to 6 carbon atoms; R 3 represents a hydrogen atom, a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; R 4 represents a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; n represents an integer of from 0 to 4; R 3 may be joined to R 1 , R 2 , or R 4 to form a ring; R 5 and R 6 , which may be the same or different, each represents a hydrogen atom, an aliphatic group which has from 1 to 6 carbon atoms, or an aromatic group; R 5 and R 6 may be joined together to form a ring; and at least one of R 5 and R 6 may be joined with R 4 to form a ring.

Inventors

  • 👤 Takeshi Nakamine
  • 👤 Michio Ono
  • 👤 Seiiti Kubodera

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 19:06
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/39

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 204 words
A dye for heat transfer recording represented by formula (III): ##STR12## wherein R 3 represents a hydrogen atom, a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; R 4 represents a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; n represents an integer of from 0 to 4; R 3 may be joined to R 9 or R 4 to form a ring; R 5 and R 6 , which may be the same or different, each represents a hydrogen atom, an aliphatic group which has from 1 to 6 carbon atoms, or a phenyl, 2-pyridyl, 2-imidazoyl or 2-furyl group; R 5 and R 6 may be joined together to form a ring; and at least one of R 5 and R 6 may be joined with R 4 to form a ring, R 9 represents a branched or straight chained or cyclic aliphatic group, an aryl group or a heterocyclic group, and wherein Q 3 represents --C═C--, ##STR13## wherein R 11 , R 12 , R 13 and R 14 each represents a hydrogen atom or a branched or straight chained or cyclic aliphatic group.
Claim 2
Dependent Claim 204 words
A dye for heat transfer recording represented by formula (III): ##STR12## wherein R 3 represents a hydrogen atom, a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; R 4 represents a halogen atom, an alkoxy group, or an aliphatic group which has from 1 to 6 carbon atoms; n represents an integer of from 0 to 4; R 3 may be joined to R 9 or R 4 to form a ring; R 5 and R 6 , which may be the same or different, each represents a hydrogen atom, an aliphatic group which has from 1 to 6 carbon atoms, or a phenyl, 2-pyridyl, 2-imidazoyl or 2-furyl group; R 5 and R 6 may be joined together to form a ring; and at least one of R 5 and R 6 may be joined with R 4 to form a ring, R 9 represents a branched or straight chained or cyclic aliphatic group, an aryl group or a heterocyclic group, and wherein Q 3 represents --C═C--, ##STR13## wherein R 11 , R 12 , R 13 and R 14 each represents a hydrogen atom or a branched or straight chained or cyclic aliphatic group.
Claim 3
Dependent Claim 83 words
A dye as claimed in claim 1, wherein at least one of R 11 , R 12 , R 13 and R 14 , which are not hydrogen, are substituted with at least one group selected from among alkyl groups, aryl groups, heterocyclic groups, alkoxy groups, alkenyloxy groups, acyl groups, ester groups, amido groups, sulfamido groups, imido groups, ureido groups, aliphatic or aromatic sulfonyl groups, aliphatic or aromatic thio groups, hydroxyl groups, cyano group, carboxyl groups, nitro groups, sulfo group, and halogen atoms.
Claim 4
Dependent Claim 42 words
A dye as claimed in claim 1, wherein each of said branched or straight chained or cyclic aliphatic group(s) represented by R 11 , R 12 , R 13 and R 14 has a total carbon number of from 1 to 6.

References Cited (Backward Citations)

US2754293A Cited
GB2161824A Cited
US4695287A Cited
US4695287B1 Cited
JPS63104050A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-01-07 1994-07-09 1995-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-01-07 1998-07-09 1999-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-01-07 2002-07-09 2003-01-08 $7700.00 Window Closed / Lapsed

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