Global Patent Index - EP 0992353 A1

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

EP 0992353 A1 20000412 (EN)

Application

EP 99119634 A 19991004

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

B41J 19/14; B41J 19/20

IPC 8 full level

B41J 19/18 (2006.01); B41J 2/51 (2006.01); B41J 3/28 (2006.01); B41J 11/00 (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)

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 203712 T 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