JPS55135465A - Slit pattern reader - Google Patents

Slit pattern reader

Info

Publication number
JPS55135465A
JPS55135465A JP4321879A JP4321879A JPS55135465A JP S55135465 A JPS55135465 A JP S55135465A JP 4321879 A JP4321879 A JP 4321879A JP 4321879 A JP4321879 A JP 4321879A JP S55135465 A JPS55135465 A JP S55135465A
Authority
JP
Japan
Prior art keywords
pattern
holder
detector
slit
spacer
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
JP4321879A
Other languages
Japanese (ja)
Inventor
Takatsugu Sue
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4321879A priority Critical patent/JPS55135465A/en
Publication of JPS55135465A publication Critical patent/JPS55135465A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up

Abstract

PURPOSE:To prevent the fluctuation of the light receiving amount of the detector and thus ensure the constant value for the detection signal level, by always securing the constant space between the slit pattern and the detector holder. CONSTITUTION:Spacer 14 of about 0.3m/m thick is attached to holder body 4a of one side to touch the part excepting slit mark 9a of slit pattern 9, i.e., both the upper and lower parts of pattern 9. Holder 4a and another holder 4b are connected tight together with the proper means. Thus detector holder 4 is shifted while spacer 14 is having contact to pattern 9. As a result, the fixed relative position can always be secured between pattern 9 and light sources 5, 6 as well as pattern 9 and photo detectors 7, 8 respectively.
JP4321879A 1979-04-10 1979-04-10 Slit pattern reader Pending JPS55135465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4321879A JPS55135465A (en) 1979-04-10 1979-04-10 Slit pattern reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4321879A JPS55135465A (en) 1979-04-10 1979-04-10 Slit pattern reader

Publications (1)

Publication Number Publication Date
JPS55135465A true JPS55135465A (en) 1980-10-22

Family

ID=12657768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4321879A Pending JPS55135465A (en) 1979-04-10 1979-04-10 Slit pattern reader

Country Status (1)

Country Link
JP (1) JPS55135465A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517826A (en) * 1974-06-05 1976-01-22 Centronics Data Computer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517826A (en) * 1974-06-05 1976-01-22 Centronics Data Computer

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