Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2005-02-15
2005-02-15
Chang, Audrey (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S652000, C347S243000, C347S244000
Reexamination Certificate
active
06856438
ABSTRACT:
An optical scanning lens used in a multi-beam scanning optical apparatus including a first mechanism reforming the light beams into line images, a deflecting mechanism reforming the light beams into multiple scanning beams, and a second mechanism reforming the multiple scanning beams into scanning light spots running on a recording surface. The optical scanning lens has a refractive index profile and is included in the second optical mechanism, and satisfies a formula (m−1)×PLs×V/WLs≦2.3×10−6, where m is a number of light emission points, PLs is a pitch of the multiple beams, V represents the refractive index profile, W [mm] represents an effective recording width of the recording surface, and WLs represents an effective range of the optical scanning lens in the sub-scanning direction corresponding to the effective recording width W. An optical scanning apparatus or image forming apparatus may use the optical scanning apparatus.
REFERENCES:
patent: 5966161 (1999-10-01), Kato
patent: 5999345 (1999-12-01), Nakajima et al.
patent: 6081386 (2000-06-01), Hayashi et al.
patent: 6166842 (2000-12-01), Aoki et al.
patent: 6185026 (2001-02-01), Hayashi et al.
patent: 6233081 (2001-05-01), Suzuki et al.
patent: 6256133 (2001-07-01), Suzuki et al.
patent: 6288819 (2001-09-01), Aoki et al.
patent: 6317246 (2001-11-01), Hayashi et al.
patent: 6347004 (2002-02-01), Suzuki et al.
patent: 6348988 (2002-02-01), Aoki et al.
patent: 6348989 (2002-02-01), Aoki et al.
patent: 6359717 (2002-03-01), Suzuki et al.
patent: 6366384 (2002-04-01), Aoki et al.
patent: 6388792 (2002-05-01), Atsuumi et al.
patent: 6400391 (2002-06-01), Suhara et al.
patent: 6448998 (2002-09-01), Suzuki et al.
patent: 6509995 (2003-01-01), Suzuki et al.
patent: 20010048542 (2001-12-01), Suhara
patent: 20010055140 (2001-12-01), Sakai et al.
patent: 09-049976 (1997-02-01), None
patent: 10-288749 (1998-10-01), None
patent: 11-002768 (1999-01-01), None
patent: 11-038314 (1999-02-01), None
patent: 11-044641 (1999-02-01), None
Sakai Kohji
Takanashi Kenichi
Allen Denise S.
Chang Audrey
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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