JPS55114071A - Reader - Google Patents

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Publication number
JPS55114071A
JPS55114071A JP2235679A JP2235679A JPS55114071A JP S55114071 A JPS55114071 A JP S55114071A JP 2235679 A JP2235679 A JP 2235679A JP 2235679 A JP2235679 A JP 2235679A JP S55114071 A JPS55114071 A JP S55114071A
Authority
JP
Japan
Prior art keywords
linear mark
image
light source
subscan direction
position precision
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
JP2235679A
Other languages
Japanese (ja)
Inventor
Seiji Hayakawa
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 JP2235679A priority Critical patent/JPS55114071A/en
Publication of JPS55114071A publication Critical patent/JPS55114071A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To simplify an adjustment of the position of an element by providing a linear mark, crossing the subscan direction of an optical system at right angles, outside of the effective original read region of contact glass.
CONSTITUTION: When light source 12 of optical scan system 16 is positioned under linear mark 18, light source 12 is made to come on an the image of linear mark 18 is image-formed on fixed scan element 15 by way of mirror 13 and image-forming lens 14. Then, inferior position precision to subscan direction of element 15 and improper position precision between elements are detected in the form of a position shift from linear mark 18 of element 15 and variation in output signal.
COPYRIGHT: (C)1980,JPO&Japio
JP2235679A 1979-02-27 1979-02-27 Reader Pending JPS55114071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2235679A JPS55114071A (en) 1979-02-27 1979-02-27 Reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2235679A JPS55114071A (en) 1979-02-27 1979-02-27 Reader

Publications (1)

Publication Number Publication Date
JPS55114071A true JPS55114071A (en) 1980-09-03

Family

ID=12080356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2235679A Pending JPS55114071A (en) 1979-02-27 1979-02-27 Reader

Country Status (1)

Country Link
JP (1) JPS55114071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127069U (en) * 1984-02-01 1985-08-27 三菱電機株式会社 Image input device scanning platform

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546713A (en) * 1977-06-17 1979-01-19 Canon Inc Array monitor device for solid state pickup element in picture information processor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546713A (en) * 1977-06-17 1979-01-19 Canon Inc Array monitor device for solid state pickup element in picture information processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127069U (en) * 1984-02-01 1985-08-27 三菱電機株式会社 Image input device scanning platform

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