Line head and an image forming apparatus using the line head

Details Line head and an image forming apparatus using the line head Line head and an image forming apparatus using the line head

2011-08-09

2011-08-09

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

07995084

ABSTRACT:
A line head, includes: a plurality of luminous elements grouped into a plurality of luminous element groups; and a lens array which includes a plurality of lenses each of which faces the luminous element group, focuses light beams emitted from the luminous element group on an image plane, and accordingly forms a spot group, wherein the plurality of luminous element groups are arrayed in M×N in a first direction and in a second direction which are different from each other, where M and N are integers equal to or greater than two, and spot groups adjacent to each other in a direction corresponding to the first direction are so formed on the image plane as to partly overlap in a direction corresponding to the second direction.

REFERENCES:
patent: 4435064 (1984-03-01), Tsukada et al.
patent: 5825400 (1998-10-01), Florence
patent: 6545811 (2003-04-01), Fujimoto
patent: 2008/0181667 (2008-07-01), Nomura et al.
patent: 2000-158705 (2000-06-01), None

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