Multibeam semiconductor laser array and multibeam laser printer

Details Multibeam semiconductor laser array and multibeam laser printer Multibeam semiconductor laser array and multibeam laser printer

1992-02-27

1994-04-05

Fuller, Benjamin R.

Recorders

Light or beam recording

Including record receiver or handling means therefor

346108, B41J 2455

Patent

active

053009568

ABSTRACT:
A multibeam semiconductor laser array including n pieces of mutually independently drivable semiconductor laser elements which are arranged with a distance r between the elements in such a manner that light leaving centers of respective laser beams emitted from the semiconductor laser elements are aligned on a straight line. In the multibeam semiconductor laser array, the distance r is determined according to the following equation when a light emitting wave length of each of the semiconductor laser elements is expressed as .lambda. and a divergence angle of the laser beam in a direction of the straight line is expressed as .theta..sub.1 : ##EQU1## where n is an integer equal to or more than 2, .pi. is a circle ratio, I is an interlacing period which is a natural number mutually prime to n, and k is a spot diameter correction coefficient which is a real number in the range of 1.4 .ltoreq.k.ltoreq.1.8.

REFERENCES:
patent: 4878066 (1989-10-01), Shiraishi
R. L. Thorton et al.,: "Properties closely spaced independent addressable lasers fabricated by impurity-induced disordering", Appl. Phys. Lett. 56 (17), pp. 1623-1625 (1990).
R. L. Thorton et al.,: "High Power (2.1 W) 10-stripe AlGaAs laser arrays with Si desordered facet windows", Appl. Phys. Lett. 49 (23), pp. 1572-1574 (1986).
Tanaka, "Examination on Tone Reproduction in Laser Xerography", The 6th Color Engineering Conference, pp. 77-80 (1989).

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