Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-01-21
1998-07-28
Allen, Stephone B.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
358474, H04N 136
Patent
active
057865949
ABSTRACT:
The current disclosure discloses methods of and systems for automatically adjusting or selecting a pitch between beams in a multi-beam scanning system. An array of light sources is mounted on a rotatable housing and emits light in a direction perpendicular to the rotational plane. The system or method measures a pitch on or near an intermediate image-forming surface. In response to the measured pitch, the scanning as well as sub-scanning pitch is automatically adjusted or selected by rotating a housing unit to maintain a desired pitch.
REFERENCES:
patent: 5371608 (1994-12-01), Muto et al.
patent: 5615038 (1997-03-01), Suzuki et al.
Article (in Japanese) by Nakamori entitled "Fuji-Xerox Development of 2-Beam Writing Unit In Laser Printer," Nikkei Electronics, Jun. 19, 1995 (No. 638), p. 18.
Article (in Japanese) by Fukui, et al. entitled "DualSpot Scanning System Technology Utilized in DocuStation DP300," Fuji Xerox Technical Report, No. 10, 1995, pp. 132-137.
Article by Mochizuki, et al. entitled "Dual Beam Diode Laser Scanning System for High Speed Laser Beam Printers," The 9th International Congress on Advances in Non-Impact Printing Technologies/Japan Hardcopy '93, Oct. 4-8, 1993, pp. 222-225.
Ito Satoru
Ito Tatsuya
Nakajima Tomohiro
Narita Masaki
Shimura Akira
Allen Stephone B.
Ricoh & Company, Ltd.
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