JPS55161226A - Microreader - Google Patents

Microreader

Info

Publication number
JPS55161226A
JPS55161226A JP6845579A JP6845579A JPS55161226A JP S55161226 A JPS55161226 A JP S55161226A JP 6845579 A JP6845579 A JP 6845579A JP 6845579 A JP6845579 A JP 6845579A JP S55161226 A JPS55161226 A JP S55161226A
Authority
JP
Japan
Prior art keywords
heat
light source
fan
microfilm
evolved
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
JP6845579A
Other languages
Japanese (ja)
Inventor
Katsumi Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANKIYUU SHIYASHIN KOGYO KK
HANKYU SHASHIN KOGYO KK
Original Assignee
HANKIYUU SHIYASHIN KOGYO KK
HANKYU SHASHIN KOGYO KK
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 HANKIYUU SHIYASHIN KOGYO KK, HANKYU SHASHIN KOGYO KK filed Critical HANKIYUU SHIYASHIN KOGYO KK
Priority to JP6845579A priority Critical patent/JPS55161226A/en
Publication of JPS55161226A publication Critical patent/JPS55161226A/en
Pending legal-status Critical Current

Links

Landscapes

  • Projection Apparatus (AREA)

Abstract

PURPOSE: To make possible the faithful reproduction and observation of the subtle gradation of film by adequately disposing heat-radiation fins, cold mirror and heat- ray-absorbing glass and removing the heat evolved from a light source of large quantity of light by the use of fans.
CONSTITUTION: A light source part A and condensing part B are contained in the same spacing 10 and a feed fan 12a and exhaust fan 12b are provided at its inlet part. The heat and heat rays evolved by a light source lamp 1 are absorbed by heat radiation fins 3, 7, cold mirror 6 and heat-ray glass 8 and are exhausted to the outside by the flow of air by the feed fan 12a and exhaust fan 12b. In addition, the radiation heat accumulated in the black portions of the microfilm placed on the stage plate C of the projection part is cooled by the blast from a cooling fan 17. The subtle gradation of the microfilm is then faithfully reproduced on the screen 22 in the projection part D and is thereby observed.
COPYRIGHT: (C)1980,JPO&Japio
JP6845579A 1979-06-01 1979-06-01 Microreader Pending JPS55161226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6845579A JPS55161226A (en) 1979-06-01 1979-06-01 Microreader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6845579A JPS55161226A (en) 1979-06-01 1979-06-01 Microreader

Publications (1)

Publication Number Publication Date
JPS55161226A true JPS55161226A (en) 1980-12-15

Family

ID=13374181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6845579A Pending JPS55161226A (en) 1979-06-01 1979-06-01 Microreader

Country Status (1)

Country Link
JP (1) JPS55161226A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432845Y1 (en) * 1965-09-11 1968-02-06
JPH052392U (en) * 1991-06-27 1993-01-14 日本電気株式会社 Surface mount connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432845Y1 (en) * 1965-09-11 1968-02-06
JPH052392U (en) * 1991-06-27 1993-01-14 日本電気株式会社 Surface mount connector

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