JPS576859A - Copying density controller - Google Patents

Copying density controller

Info

Publication number
JPS576859A
JPS576859A JP8111980A JP8111980A JPS576859A JP S576859 A JPS576859 A JP S576859A JP 8111980 A JP8111980 A JP 8111980A JP 8111980 A JP8111980 A JP 8111980A JP S576859 A JPS576859 A JP S576859A
Authority
JP
Japan
Prior art keywords
density
control
control system
switches
copying
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
JP8111980A
Other languages
Japanese (ja)
Inventor
Yoshinobu Tonomura
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 Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8111980A priority Critical patent/JPS576859A/en
Publication of JPS576859A publication Critical patent/JPS576859A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

PURPOSE:To prevent trouble due to miscontrol of density, by providing a manual density control system for control it to a desired value, and a reference density control system having a copying density preset, and properly selecting one of them. CONSTITUTION:A manual density control system A for controlling a density control circuit 1 through a variable resistance 2 and adjusting copying density to a desired value, and a reference density control system B for controlling a control circuit 1 through a fixed resistance group in order to control it to a preset density are installed. To make these control systems A, B selectable, they are connected to the control circuit 1 through switches SW1, SW2 of analog switches or the like. To control operation of the switches, a binary counter 6 for receiving a signal from touch swtiches provided with touch plates 4, etc. is installed, thus permitting trouble due to miscontrol of density to be prevented.
JP8111980A 1980-06-16 1980-06-16 Copying density controller Pending JPS576859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8111980A JPS576859A (en) 1980-06-16 1980-06-16 Copying density controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8111980A JPS576859A (en) 1980-06-16 1980-06-16 Copying density controller

Publications (1)

Publication Number Publication Date
JPS576859A true JPS576859A (en) 1982-01-13

Family

ID=13737487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8111980A Pending JPS576859A (en) 1980-06-16 1980-06-16 Copying density controller

Country Status (1)

Country Link
JP (1) JPS576859A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358372A (en) * 1986-08-28 1988-03-14 Sharp Corp Image forming device
JPS6349552U (en) * 1986-09-19 1988-04-04
JPS6349554U (en) * 1986-09-19 1988-04-04
JPS6349553U (en) * 1986-09-19 1988-04-04
JPS6349550U (en) * 1986-09-19 1988-04-04
DE10160623B4 (en) * 2001-12-11 2011-06-09 Precitec Kg Apparatus and method for monitoring a laser processing operation, in particular a laser welding operation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358372A (en) * 1986-08-28 1988-03-14 Sharp Corp Image forming device
JPS6349552U (en) * 1986-09-19 1988-04-04
JPS6349554U (en) * 1986-09-19 1988-04-04
JPS6349553U (en) * 1986-09-19 1988-04-04
JPS6349550U (en) * 1986-09-19 1988-04-04
DE10160623B4 (en) * 2001-12-11 2011-06-09 Precitec Kg Apparatus and method for monitoring a laser processing operation, in particular a laser welding operation

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