JPS5997133A - オリジナルの背景と映像域の双方の光学濃度を測定する装置 - Google Patents

オリジナルの背景と映像域の双方の光学濃度を測定する装置

Info

Publication number
JPS5997133A
JPS5997133A JP58198942A JP19894283A JPS5997133A JP S5997133 A JPS5997133 A JP S5997133A JP 58198942 A JP58198942 A JP 58198942A JP 19894283 A JP19894283 A JP 19894283A JP S5997133 A JPS5997133 A JP S5997133A
Authority
JP
Japan
Prior art keywords
potential
signal
optical density
detection circuit
original
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.)
Granted
Application number
JP58198942A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0535414B2 (cg-RX-API-DMAC7.html
Inventor
ウイレム・ヘリツト・ヨゼフ・リツエルフエルド
バステイア−ン・ベルナルド・ブ−レ・エ−ルテインク
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Nederland BV
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 Oce Nederland BV filed Critical Oce Nederland BV
Publication of JPS5997133A publication Critical patent/JPS5997133A/ja
Publication of JPH0535414B2 publication Critical patent/JPH0535414B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Facsimile Scanning Arrangements (AREA)
JP58198942A 1982-11-03 1983-10-24 オリジナルの背景と映像域の双方の光学濃度を測定する装置 Granted JPS5997133A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8204260 1982-11-03
NL8204260A NL8204260A (nl) 1982-11-03 1982-11-03 Meetinrichting voor het meten van de optische dichtheid van zowel de ondergrond als van de beeldpartijen in een orgineel.

Publications (2)

Publication Number Publication Date
JPS5997133A true JPS5997133A (ja) 1984-06-04
JPH0535414B2 JPH0535414B2 (cg-RX-API-DMAC7.html) 1993-05-26

Family

ID=19840523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58198942A Granted JPS5997133A (ja) 1982-11-03 1983-10-24 オリジナルの背景と映像域の双方の光学濃度を測定する装置

Country Status (5)

Country Link
US (1) US4585352A (cg-RX-API-DMAC7.html)
EP (1) EP0108440B1 (cg-RX-API-DMAC7.html)
JP (1) JPS5997133A (cg-RX-API-DMAC7.html)
DE (1) DE3365161D1 (cg-RX-API-DMAC7.html)
NL (1) NL8204260A (cg-RX-API-DMAC7.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186247A (ja) * 1986-02-12 1987-08-14 Fuji Photo Film Co Ltd 写真焼付露光量決定方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500731A (nl) * 1985-03-14 1986-10-01 Oce Nederland B V Patents And Inrichting voor het bepalen van een maat voor de hoeveelheid zwak weergegeven informatie van een origineel.
US4983854A (en) * 1988-09-15 1991-01-08 Brother Kogyo Kabushiki Kaisha Sheet detection apparatus with reflecting member
US5032733A (en) * 1988-10-04 1991-07-16 Fuji Photo Film Co., Ltd. Method for detecting unexposed regions

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202042A (en) * 1962-08-06 1965-08-24 Jamieson Ballard System for measuring separately background and average line luminance or density
US3717077A (en) * 1972-02-22 1973-02-20 Eastman Kodak Co Exposure control apparatus
JPS5913011B2 (ja) * 1974-06-21 1984-03-27 富士写真フイルム株式会社 写真焼付露光量制御方法
DE2654943C2 (de) * 1976-12-03 1985-10-24 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zur Vorprüfung von zu einem Vorlagenband zusammengefaßten Kopiervorlagen
CH610673A5 (cg-RX-API-DMAC7.html) * 1977-02-01 1979-04-30 Gretag Ag
DE2753632C2 (de) * 1977-12-01 1985-08-29 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zum Selektieren von kopierunwürdigen fotografischen Vorlagen
DE2831836A1 (de) * 1978-07-20 1980-02-07 Agfa Gevaert Ag Vorrichtung zur vorpruefung von kopiervorlagen
JPS5560826A (en) * 1978-11-01 1980-05-08 Olympus Optical Co Ltd Photometry
GB2106667B (en) * 1981-07-20 1985-08-07 Dainippon Screen Mfg Controlling activity of developing solution against blackening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186247A (ja) * 1986-02-12 1987-08-14 Fuji Photo Film Co Ltd 写真焼付露光量決定方法

Also Published As

Publication number Publication date
EP0108440B1 (en) 1986-08-06
US4585352A (en) 1986-04-29
JPH0535414B2 (cg-RX-API-DMAC7.html) 1993-05-26
NL8204260A (nl) 1984-06-01
DE3365161D1 (en) 1986-09-11
EP0108440A1 (en) 1984-05-16

Similar Documents

Publication Publication Date Title
Higgins et al. The nature and evaluation of the sharpness of photographic images
Schade An evaluation of photographic image quality and resolving power
GB1595441A (en) Preliminary checking of the sharpness of originals
US4624547A (en) Image forming apparatus
JPS5997133A (ja) オリジナルの背景と映像域の双方の光学濃度を測定する装置
US4674863A (en) Image forming apparatus controlled by a plurality of image density detectors
JPS6259302B2 (cg-RX-API-DMAC7.html)
CA2134247A1 (en) Method and Apparatus for Background Control in an Electrostatographic Printing Machine
US4371265A (en) Dot percentage measuring device
JPH01107179A (ja) 静電記録装置の表面電位計較正装置
JPH0356461B2 (cg-RX-API-DMAC7.html)
GB2047905A (en) Focus Indicating Device for a Camera
JPS59157663A (ja) 画像記録制御方法
JPS5879263A (ja) 原稿濃度読み取り装置
US2678582A (en) Light meter
JPS5930567A (ja) 濃度検出方法
JPH0516589B2 (cg-RX-API-DMAC7.html)
JPS61208370A (ja) 光電変換装置
JPS53103736A (en) Auto-bias development for xerographic copying machine
SU1569794A1 (ru) Тест-фильм дл визуального контрол засветки проекционного изображени
US3805063A (en) Detecting device for focusing in optical instrument
JPH01136110A (ja) 画像検出方法
JPS6275666A (ja) 複写装置
JPS6253816B2 (cg-RX-API-DMAC7.html)
JPS55117165A (en) Image forming device