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Patent Searching and Data


Title:
SCANNER OF IMAGING LENS
Document Type and Number:
Japanese Patent JPS5612662
Kind Code:
A
Abstract:

PURPOSE: To provide a scanner which does not affect imaging performance even if some backlash occurs in guiding members by aligning the point of the imaging lens of the scanner to move the lens and the guiding center of the guiding member and the working center of a drive unit.

CONSTITUTION: A scanner is so constituted that the working center of the guiding center driving unit of guiding rods 6 comes on the same straight line P and an imaging lens 4 is so dispoed that the principal point H of the imaging lens aligns onto this straight line, In this case, if any backlash occurs in this guiding system, the guiding center of the guiding rods 6 becomes the turning center of said backlash. The straight line P comes on the axial center of the guiding rods 6 and becomes the center of the axial center of the guiding rods 6 and becomes the center of the two guiding rods 6. A driving wire 8 is fixed onto the above-mentioned straight line P; hence, the backlash of the guiding system is minimized. Even if some backlash occurs in the guiding system of such scanner, the centerline of the luminous flux does not deviate and this makes imaging performance good.


Inventors:
YOKOTA TAKASHI
KAMIMOTO YOSHIAKI
Application Number:
JP1979000088145
Publication Date:
February 07, 1981
Filing Date:
July 13, 1979
Export Citation:
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Assignee:
RICOH KK
International Classes:
G03B27/50; G03G15/04; (IPC1-7): G03G15/04