Optical printer head
AssigneeFutaba Corporation
InventorsYukihiko Shimizu, Toshiaki Nakahara
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Abstract
An optical printer head capable of providing a distinct image free of color shade and color fading. Dot-like lights different in luminous color emitted from a plurality of fluorescent luminous tubes acting as light sources are guided to a common equi-magnification image formation element through a dichroic optical element while being kept from being aligned or coincident with each other, to thereby carry out image formation on a record medium while being arranged in predetermined positional relationship thereon. Also, optical members may be incorporated in the optical printer head, so that optical path lengths of the dot-like lights different in luminous color may be rendered substantially equal to each other.
Claims6
An optical printer head comprising:
- a plurality of light sources;
- an optical element configured to reflect lights emitted from each of said light sources in a predetermined direction;
- an image formation element configured to receive the lights reflected from said optical element and to project luminous patterns onto a record medium while keeping the luminous fluxes emitted from each of said light sources spaced in parallel;
- and
- optical members arranged in proximity to said optical element so as to permit optical path lengths of the lights of said light sources in said optical element to be substantially equal to each other,
- wherein said image formation element comprises an equi-magnification optical lens and said optical element comprises a total reflection mirror configured to reflect the lights emitted from said light sources or a dichroic mirror configured to reflect a specific wavelength of the lights emitted from said light sources.
Dependencies are inferred from the claim text.