| (19) |
 |
|
(11) |
EP 0 879 917 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.11.1999 Bulletin 1999/45 |
| (43) |
Date of publication A2: |
|
25.11.1998 Bulletin 1998/48 |
| (22) |
Date of filing: 19.05.1998 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
20.05.1997 GB 9710282
|
| (71) |
Applicant: Arjo Wiggins Fine Papers Limited |
|
Basingstoke,
Hampshire RG21 4EE (GB) |
|
| (72) |
Inventors: |
|
- Owen, David William
High Wycombe,
Buckinghamshire HP15 7NA (GB)
- Saunders, Richard David
Windsor,
Berkshire SL4 3JZ (GB)
- Sutton, Derek
High Wycombe Buckinghamshire HP12 3PB (GB)
|
| (74) |
Representative: Norris, Richard John |
|
Intellectual Property Department,
Arjo Wiggins Appleton plc,
Butler's Court,
Wattleton Road
Beaconsfield,
Buckinghamshire HP9 1RT
Beaconsfield,
Buckinghamshire HP9 1RT (GB) |
|
| |
|
| (54) |
Paper treatment composition |
(57) The suitability of paper for printing by so-called "colour digital presses" of the
kind which use a liquid toner or ink is enhanced by the use of a treatment composition
comprising an aluminate salt or a salt of a weak acid and a strong base in an amount
such as to impart an alkaline surface pH value to the paper. The treatment composition
preferably also contains starch or another surface agent, so that the treatment composition
also functions as a surface sizing composition.