JPS58184141A - Original illuminating device for copying machine - Google Patents

Original illuminating device for copying machine

Info

Publication number
JPS58184141A
JPS58184141A JP6634282A JP6634282A JPS58184141A JP S58184141 A JPS58184141 A JP S58184141A JP 6634282 A JP6634282 A JP 6634282A JP 6634282 A JP6634282 A JP 6634282A JP S58184141 A JPS58184141 A JP S58184141A
Authority
JP
Japan
Prior art keywords
reflective mirror
influence
axis
point
light emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6634282A
Other languages
Japanese (ja)
Inventor
Kenji Imamura
Original Assignee
Ushio Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ushio Inc filed Critical Ushio Inc
Priority to JP6634282A priority Critical patent/JPS58184141A/en
Publication of JPS58184141A publication Critical patent/JPS58184141A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/04Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036Details of illuminating systems, e.g. lamps, reflectors

Abstract

PURPOSE:To obtain a required illuminance pattern with a high precision in the longitudinal direction in the center of a long and narrow illumination region, by displacing respective focuses of the first and the second reflective mirrors from the axis of a bar-shaped light source electric lamp to prescribed sides. CONSTITUTION:The first reflective mirror A has the first focus FA1 in a position off an axis 20 of a bar-shaped light source electric lamp 2 to the side of a platen 1, and the second reflective mirror B has the first focus FB1 in a position off the axis 20 of the light source electric lamp 2 to the opposite side. Thus, the influence of the first reflective mirror A is strong but the influence of the second reflective mirror B is weak in case of the light emitting part placed at a point L1, and influences of both reflective mirrors A and B lessened slightly and added in case of the light emitting part placed at a point L2, and the influence of the first reflective mirror A is weak but the influence of the second reflective mirror B is strong in case of the light emitting part placed at a point L3. Consequently, a required illuminance pattern is obtained with a high precision in the longitudinal direction in the center of the long and narrow illumination region.
JP6634282A 1982-04-22 1982-04-22 Original illuminating device for copying machine Pending JPS58184141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6634282A JPS58184141A (en) 1982-04-22 1982-04-22 Original illuminating device for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6634282A JPS58184141A (en) 1982-04-22 1982-04-22 Original illuminating device for copying machine

Publications (1)

Publication Number Publication Date
JPS58184141A true JPS58184141A (en) 1983-10-27

Family

ID=13313082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6634282A Pending JPS58184141A (en) 1982-04-22 1982-04-22 Original illuminating device for copying machine

Country Status (1)

Country Link
JP (1) JPS58184141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0422728U (en) * 1990-06-15 1992-02-25

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123725A (en) * 1974-08-06 1976-02-25 Ricoh Kk Fukushakitono suritsutoshomeisochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123725A (en) * 1974-08-06 1976-02-25 Ricoh Kk Fukushakitono suritsutoshomeisochi

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0422728U (en) * 1990-06-15 1992-02-25

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