EP 0992353 A1 20000412 - Method and apparatus for printing onto a continuously advancing web of work material
Title (en)
Method and apparatus for printing onto a continuously advancing web of work material
Title (de)
Verfahren und Gerät zum Drucken auf eine durchlaufende Materialbahn
Title (fr)
Procédure et appareil pour imprimer sur un matériau de bande défilant en continu
Publication
Application
Priority
- US 16631498 A 19981005
- US 24561799 A 19990205
Abstract (en)
In an apparatus (20, 320) for printing on a web of work material (26, 326) continuously advanced in an X coordinate direction at a velocity vwx, at least one print head (86, 286) having a plurality of print elements (100) arranged in a scanning array (102, 302) extending in the X direction is repetitively movable relative to the apparatus (20, 320). The scanning array (102, 302) moves at a velocity va along a path that includes at least one scan segment and at least one repositioning segment. As the scanning array (102, 302) traverses the scan segment it has a first velocity component vax in the X direction, and a second velocity component vay in a Y direction perpendicular to the X direction. The first velocity component vax is equal to the velocity vwx so that the scanning array (102, 302) in traversing the scan segment, scans a swath on the web (26, 326) parallel to the Y direction, having a swath height hs. The velocity component vay is such that in the time taken for the array (102, 302) to move along the full extent of the scan segment the web (26, 326) advances a distance hw in the X direction that is less than hs. The array (102, 302) then travels along the repositioning segment such that prior or equal to a time taken for the web (26, 326) to advance a distance d= hs-hw the print head (86, 286) is positioned for movement along the scan segment, thereby causing successive swaths of the web scanned by the array to be positioned immediately adjacent to one another. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/51 (2006.01); B41J 3/28 (2006.01); B41J 11/00 (2006.01); B41J 19/18 (2006.01); B41J 11/42 (2006.01); B41J 19/14 (2006.01); B41J 19/20 (2006.01)
CPC (source: EP)
B41J 3/28 (2013.01); B41J 11/008 (2013.01); B41J 11/42 (2013.01); B41J 19/142 (2013.01); B41J 19/16 (2013.01); B41J 19/202 (2013.01); B41J 25/001 (2013.01)
Citation (search report)
- [A] US 3742846 A 19730703 - KNAPPE L
- [A] EP 0829368 A2 19980318 - SCITEX DIGITAL PRINTING INC [US]
- [A] DE 3446226 A1 19860619 - OLYMPIA WERKE AG [DE]
- [A] EP 0589669 A1 19940330 - CANON KK [JP]
- [A] DE 4120293 A1 19920206 - MANNESMANN AG [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0992353 A1 20000412; EP 0992353 B1 20010801; AT E203712 T1 20010815; CA 2284950 A1 20000405; DE 69900203 D1 20010906; DE 69900203 T2 20020516; JP 2000135830 A 20000516; JP 3265293 B2 20020311
DOCDB simple family (application)
EP 99119634 A 19991004; AT 99119634 T 19991004; CA 2284950 A 19991004; DE 69900203 T 19991004; JP 28372199 A 19991005