Ink composition containing a particular type of dye, and corresponding ink-jet printing process
AssigneeAgfa-Gevaert
InventorsLuc Vanmaele, Johan Loccufier, Egbert Meijer, Henricus Janssen, Pieter Fransen
Life of this patent
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Abstract
An ink composition is disclosed which contains at least one novel dye (CU)n(SAU)m that is capable of self-assembling under appropriate conditions to form supramolecular structures. More than one novel dye (CU)n(SAU)m and/or at least one non-colored self-assembling compound (SAU′)p(X)q may be incorporated in these supramolecular structures. Also disclosed is an ink-jet printing process using these novel dyes, and an ink-jet printing apparatus provided with an ink cartridge containing such a dye.
Claims49
An ink composition comprising at least one self-assembling dye according to formula (I)
- (CU)n(SAU)m (I)
- wherein,
- CU means a chromophore group with an absorption maximum between 200 nm and 2000 nm and covalently linked to SAU;
- Sau means a multiple H-donor/accepting group, which can form at least three hydrogen bonds;
- n and m are at least 1;
- when n is greater than 1 the individual CU groups may be the same or different;
- and
- when m is greater than 1 the individual SAU groups may be the same or different.
A process for the formation of an ink-jet image comprising the step of image-wise jetting by means of an ink-jet printing apparatus onto an ink-jet recording element, comprising a support and optionally at least one ink receiving layer an ink composition comprising at least one self-assembling dye according to formula (I)
- (CU)n(SAU)m (I)
- wherein,
- CU means a chromophore group with an absorption maximum between 200 nm and 2000 nm and covalently linked to SAU;
- SAU means a multiple H-donor/accepting group, which can form at least three hydrogen bonds;
- n and m are at least 1;
- when n is greater than 1 the individual CU groups may be the same or different;
- and
- when m is greater than 1 the individual SAU groups may be the same or different.
An ink-jet printing apparatus comprising an ink cartridge containing an ink composition comprising at least one self-assembling dye according to formula (I)
- (CU)n(SAU)m (I)
- wherein,
- CU means a chromophore group with an absorption maximum between 200 nm and 2000 nm and covalently linked to SAU;
- SAU means a multiple H-donor/accepting group, which can form at least three hydrogen bonds;
- n and m are at least 1;
- when n is greater than 1 the CU groups may be the same or different;
- and
- when m is greater than 1 the SAU groups may be the same or different.
Dependencies are inferred from the claim text.