公开(公告)号：JP2000177173A

公开(公告)日：2000-06-27

申请号：JP34567699

申请日：1999-12-06

Applicant: XEROX CORP

Inventor： CHRISTOPHER L CHUA ,  THORNTON ROBERT L ,  MAEDA PATRICK Y ,  G A NEBLE CONNELL ,  PEETERS ERIC ,  DAVID K FALK ,  ROSS D BRINGANS

IPC: B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G03G15/00

Abstract: PROBLEM TO BE SOLVED: To provide a device of a polygon-less raster output scanning system for wide page printing. SOLUTION: A VCSEL laser print bar 100 of which the position is adjustable is used in a dynamic structure, thereby raising a scanning resolution and providing a performance for wide page printing. A beam from a specific light-emitting element 160 is blocked by a light-receiving member 210, is blocked by a plane surface in the vicinity of the light-receiving member 210 and is imaged to a photosensor. The photosensor is positioned such that VCSEL arrays 110 are optimally arranged. An electric signal is fed back to a piezoelectric actuator 143, then the VCSEL arrays 110 are adequately arranged. In the dynamic structure, the feedback signal is used to maintain synchronization between the print bar 100 and a control signal.