JPS6435581A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS6435581A
JPS6435581A JP62191615A JP19161587A JPS6435581A JP S6435581 A JPS6435581 A JP S6435581A JP 62191615 A JP62191615 A JP 62191615A JP 19161587 A JP19161587 A JP 19161587A JP S6435581 A JPS6435581 A JP S6435581A
Authority
JP
Japan
Prior art keywords
concentration
image forming
compared
judged
outside
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
JP62191615A
Other languages
Japanese (ja)
Inventor
Hisaaki Kono
Yasufumi Tanimoto
Kimio Osawa
Takashi Matsuoka
Kouji Ishida
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.)
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
Original Assignee
Toshiba Corp
Toshiba Intelligent Technology 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 Toshiba Corp, Toshiba Intelligent Technology Co Ltd filed Critical Toshiba Corp
Priority to JP62191615A priority Critical patent/JPS6435581A/en
Publication of JPS6435581A publication Critical patent/JPS6435581A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To prevent deterioration in image quality when a developer concentration of a developing means is compared with a reference concentration and when the developer concentration is judged to be extraordinary high, by displaying the exchange demand of the developing means. CONSTITUTION:Every time image forming is performed, a voltage value (a readout value) supplied by a concentration detecting device 70 is compared with the reference value stored in a storage circuit 122 and concentration control according to the compared results is performed. The toner/concentration ratio of a developing device 18 is judged whether it is outside a concentration control range or not and when it is judged to be outside the concentration control range, the exchange demand of the developing device 18 is performed. Thus, printing can always be performed at a fixed density and the deterioration in the image forming quality is prevented.
JP62191615A 1987-07-31 1987-07-31 Image forming device Pending JPS6435581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62191615A JPS6435581A (en) 1987-07-31 1987-07-31 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62191615A JPS6435581A (en) 1987-07-31 1987-07-31 Image forming device

Publications (1)

Publication Number Publication Date
JPS6435581A true JPS6435581A (en) 1989-02-06

Family

ID=16277580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62191615A Pending JPS6435581A (en) 1987-07-31 1987-07-31 Image forming device

Country Status (1)

Country Link
JP (1) JPS6435581A (en)

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