JPS5716440A - Speed controller for diazo copier - Google Patents

Speed controller for diazo copier

Info

Publication number
JPS5716440A
JPS5716440A JP9109180A JP9109180A JPS5716440A JP S5716440 A JPS5716440 A JP S5716440A JP 9109180 A JP9109180 A JP 9109180A JP 9109180 A JP9109180 A JP 9109180A JP S5716440 A JPS5716440 A JP S5716440A
Authority
JP
Japan
Prior art keywords
original drawing
changed
speed change
sensitive
controlling part
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
JP9109180A
Other languages
Japanese (ja)
Inventor
Hiroki Takeda
Yasuhiro Takahashi
Yasuaki Ishii
Katsumi Kurihara
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 JP9109180A priority Critical patent/JPS5716440A/en
Publication of JPS5716440A publication Critical patent/JPS5716440A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B27/00Photographic printing apparatus
    • G03B27/72Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

PURPOSE:To obtain a copy with constant contrast at the same position of an original drawing selecting dial when the same original drawing is used even if a sensitive paper is changed by changing the characteristics of speed change according to the sensitivity of these sensitive papers in a diazo copier which changes its printing speed on the basis of the shading of the original drawing. CONSTITUTION:When an original drawing selecting dial 3 is changed in consideration of the shading of the original drawing or a required copying contrast, the value of a variable resistance 2 in the speed change controlling part 6 of a feed motor M is changed to change the printing speed. When a sensitive switch dial 4 is changeovered according to the kind of sensitive papers, an input controlling part 7 is switched and the characteristics of speed change in a speed change controlling part 6 is changed, so that copies with constant contrast are obtained from the same original drawing when the original drawing selecting dial 3 is set to the same scale 5 even if sensitive papers with different sensitivity are used.
JP9109180A 1980-07-03 1980-07-03 Speed controller for diazo copier Pending JPS5716440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9109180A JPS5716440A (en) 1980-07-03 1980-07-03 Speed controller for diazo copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9109180A JPS5716440A (en) 1980-07-03 1980-07-03 Speed controller for diazo copier

Publications (1)

Publication Number Publication Date
JPS5716440A true JPS5716440A (en) 1982-01-27

Family

ID=14016844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9109180A Pending JPS5716440A (en) 1980-07-03 1980-07-03 Speed controller for diazo copier

Country Status (1)

Country Link
JP (1) JPS5716440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164740U (en) * 1987-04-15 1988-10-27

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5090331A (en) * 1973-12-10 1975-07-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5090331A (en) * 1973-12-10 1975-07-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164740U (en) * 1987-04-15 1988-10-27
JPH0637412Y2 (en) * 1987-04-15 1994-09-28 株式会社ウシオユ−テツク Exposure control system for running exposure system

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