AT344004B - DEVICE FOR AUTOMATIC EXPOSURE CONTROL BY THE DRIVE SPEED - Google Patents

DEVICE FOR AUTOMATIC EXPOSURE CONTROL BY THE DRIVE SPEED

Info

Publication number
AT344004B
AT344004B AT170073A AT170073A AT344004B AT 344004 B AT344004 B AT 344004B AT 170073 A AT170073 A AT 170073A AT 170073 A AT170073 A AT 170073A AT 344004 B AT344004 B AT 344004B
Authority
AT
Austria
Prior art keywords
exposure control
drive speed
automatic exposure
automatic
drive
Prior art date
Application number
AT170073A
Other languages
German (de)
Other versions
ATA170073A (en
Inventor
W Dennhardt
H Schroter
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of ATA170073A publication Critical patent/ATA170073A/en
Application granted granted Critical
Publication of AT344004B publication Critical patent/AT344004B/en

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/93—Load or torque

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
AT170073A 1972-03-01 1973-02-26 DEVICE FOR AUTOMATIC EXPOSURE CONTROL BY THE DRIVE SPEED AT344004B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2209725A DE2209725C2 (en) 1972-03-01 1972-03-01 Device for automatic control of the throughput speed of original and copy material

Publications (2)

Publication Number Publication Date
ATA170073A ATA170073A (en) 1977-10-15
AT344004B true AT344004B (en) 1978-06-26

Family

ID=5837531

Family Applications (1)

Application Number Title Priority Date Filing Date
AT170073A AT344004B (en) 1972-03-01 1973-02-26 DEVICE FOR AUTOMATIC EXPOSURE CONTROL BY THE DRIVE SPEED

Country Status (11)

Country Link
US (1) US3851236A (en)
AT (1) AT344004B (en)
BE (1) BE795971A (en)
CA (1) CA981085A (en)
DE (1) DE2209725C2 (en)
ES (1) ES412126A1 (en)
FR (1) FR2174629A5 (en)
GB (1) GB1417334A (en)
IT (1) IT977523B (en)
NL (1) NL7302278A (en)
SE (1) SE377197B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2438491C2 (en) * 1974-08-10 1985-04-04 Hoechst Ag, 6230 Frankfurt Device for controlling the exposure by changing the transport speed of an original and the illuminance of a light source in a copier
JPS51120718A (en) * 1975-04-15 1976-10-22 Ricoh Co Ltd Exposure method for duplicator
US4124295A (en) * 1977-02-02 1978-11-07 Savin Business Machines Corporation Background brightness control for document copier
US4924265A (en) * 1988-03-14 1990-05-08 Xerox Corporation Automatic insert feed control
JPH03211568A (en) * 1990-01-17 1991-09-17 Konica Corp Color image forming device
KR920004312B1 (en) * 1990-05-15 1992-06-01 삼성전자 주식회사 Washing control apparatus
US6392421B1 (en) 1998-06-11 2002-05-21 Em-Tech Llc Spectral EM frequency metallic thickness measurement using metallic transparencies
US6657440B1 (en) * 1998-06-11 2003-12-02 Em-Tech Sensors Llc Propagation of waves through materials
US6744263B2 (en) 1999-12-10 2004-06-01 Em-Tech Sensors Llc Apparatus and method for the measurement of electrical properties of materials through non-magnetizable materials
US6351245B1 (en) 1999-12-10 2002-02-26 Em-Tech Llc Use of phase coded permeability lensing to obtain directional information in electro-magnetic radiation
US6597186B2 (en) 1999-12-10 2003-07-22 Em-Tech Sensors Llc Through tank level gauging
US6553838B2 (en) 2000-08-25 2003-04-29 Em-Tech Llc Detection of anomalies on railroad tracks
WO2002021161A2 (en) 2000-09-02 2002-03-14 Em-Tech Llc Measurements of electrical properties through non magnetically permeable metals using directed magnetic beams and magnetic lenses
WO2002033394A2 (en) 2000-10-16 2002-04-25 Em-Tech Llc A technique for measuring the thickness of a ferromagnetic metal using permeability signatures
US6597177B1 (en) 2000-11-20 2003-07-22 Em-Tech Sensors Llc Through casing resistivity measurement in permanently installed downhole production environment
US8542420B2 (en) * 2010-06-30 2013-09-24 Kabushiki Kaisha Toshiba Image reading apparatus, image forming apparatus and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE317261B (en) * 1964-12-24 1969-11-10 Mita Industrial Co Ltd
US3472592A (en) * 1966-10-21 1969-10-14 Gaf Corp Automatic exposure system
US3684940A (en) * 1970-04-09 1972-08-15 Warner Swasey Co Power amplifier having source of different power capabilities for energizing a servo motor
DE2119373C3 (en) * 1971-04-22 1978-07-13 Hoechst Ag, 6000 Frankfurt Blueprint machine for spatially separated documents
US3700323A (en) * 1971-12-28 1972-10-24 Eastman Kodak Co Control circuitry for assisting electrostatographic compensation

Also Published As

Publication number Publication date
DE2209725A1 (en) 1973-09-06
FR2174629A5 (en) 1973-10-12
BE795971A (en) 1973-08-27
DE2209725C2 (en) 1986-02-20
SE377197B (en) 1975-06-23
GB1417334A (en) 1975-12-10
ATA170073A (en) 1977-10-15
IT977523B (en) 1974-09-20
CA981085A (en) 1976-01-06
US3851236A (en) 1974-11-26
ES412126A1 (en) 1976-10-01
NL7302278A (en) 1973-09-04

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties