| (19) |
 |
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(11) |
EP 0 828 024 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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01.07.1998 Bulletin 1998/27 |
| (43) |
Date of publication A2: |
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11.03.1998 Bulletin 1998/11 |
| (22) |
Date of filing: 14.08.1997 |
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| (51) |
International Patent Classification (IPC)6: D06P 5/00 |
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| (84) |
Designated Contracting States: |
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AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
| (30) |
Priority: |
22.08.1996 US 23432 P
17.07.1997 US 895648
|
| (71) |
Applicant: Scitex Digital Printing, Inc. |
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Dayton,
Ohio 45420-4099 (US) |
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| (72) |
Inventors: |
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- Botros, Raouf
Centerville,
Ohio 45459 (US)
- Chavan, Sunita P.
Vandalia,
Ohio 45377 (US)
- Bahl, Surinder K.
Beavercreek,
Ohio 45434 (US)
|
| (74) |
Representative: Freed, Arthur Woolf et al |
|
Reginald W. Barker & Co.,
Chancery House,
53-64, Chancery Lane
London, WC2A 1QU
London, WC2A 1QU (GB) |
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| |
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| (54) |
Permanent ink jet imaging of cellulosic material |
(57) A pretreatment solution for a cellulosic fabric to be printed, allows the printed
fabric to maintain color brightness and image permanence. The pretreatment solution
comprises a mixture of water, a salt, and a hydroxyalkyl imine derivative. The hydroxyalkyl
imine derivative is selected from the group consisting of branched polyethyleneimine
polymer, diphenylguanidine, hydroxyethyl and hydroxypropyl. In a preferred embodiment
of the present invention, the branched polyethyleneimine polymer comprises ethoxylated
polyethyleneimine.