JPH03258075A - Original reader - Google Patents

Original reader

Info

Publication number
JPH03258075A
JPH03258075A JP2054970A JP5497090A JPH03258075A JP H03258075 A JPH03258075 A JP H03258075A JP 2054970 A JP2054970 A JP 2054970A JP 5497090 A JP5497090 A JP 5497090A JP H03258075 A JPH03258075 A JP H03258075A
Authority
JP
Japan
Prior art keywords
light
light sources
photoelectric conversion
conversion unit
source
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
JP2054970A
Other languages
Japanese (ja)
Inventor
Hiroshi Mitsuda
Takafumi Nishioka
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2054970A priority Critical patent/JPH03258075A/en
Publication of JPH03258075A publication Critical patent/JPH03258075A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the need for the carrying of a light source device for a transparent original by lighting only a light source emitting a light to a part with a photoelectric conversion unit of the transparent original opposed thereto sequentially among light sources in response to the carrier position of the photoelectric conversion unit.
CONSTITUTION: When an effective scanning range on an original platen 2 is divided into 6 blocks l1-l6 and a photoelectric conversion unit 6 is placed in the block l1, 1st and 2nd light sources 8a, 8b are selected and when the photoelectric conversion unit 6 is placed in the block l2, 2nd and 3rd light sources 8b, 8c are selected sequentially and then light sources 8a-8g are sequentially lighted. In this case, a uniform illuminance distribution is obtained for each block. Then a light source 8 is fixed and not moved during at least the reading and a control section only selects the light sources 8a-8g to be lighted, then the control of the light source device 8 is simplified. Thus, the suppression of the vibration due to the carrying of the light source device 8 is not required.
COPYRIGHT: (C)1991,JPO&Japio
JP2054970A 1990-03-08 1990-03-08 Original reader Pending JPH03258075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2054970A JPH03258075A (en) 1990-03-08 1990-03-08 Original reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2054970A JPH03258075A (en) 1990-03-08 1990-03-08 Original reader

Publications (1)

Publication Number Publication Date
JPH03258075A true JPH03258075A (en) 1991-11-18

Family

ID=12985516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2054970A Pending JPH03258075A (en) 1990-03-08 1990-03-08 Original reader

Country Status (1)

Country Link
JP (1) JPH03258075A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06350810A (en) * 1993-06-10 1994-12-22 Nec Corp Transmissive original scanning device
US7692822B2 (en) 2004-08-16 2010-04-06 Konica Minolta Business Technologies, Inc. Image reading apparatus, image forming apparatus and image reading method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06350810A (en) * 1993-06-10 1994-12-22 Nec Corp Transmissive original scanning device
JP2555932B2 (en) * 1993-06-10 1996-11-20 日本電気株式会社 Transparent original scanning device
US7692822B2 (en) 2004-08-16 2010-04-06 Konica Minolta Business Technologies, Inc. Image reading apparatus, image forming apparatus and image reading method

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