JPS5593080A - Detecting method for conductive powder - Google Patents

Detecting method for conductive powder

Info

Publication number
JPS5593080A
JPS5593080A JP16562878A JP16562878A JPS5593080A JP S5593080 A JPS5593080 A JP S5593080A JP 16562878 A JP16562878 A JP 16562878A JP 16562878 A JP16562878 A JP 16562878A JP S5593080 A JPS5593080 A JP S5593080A
Authority
JP
Japan
Prior art keywords
hopper
circuit
conductive powder
powder
coil
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
JP16562878A
Other languages
Japanese (ja)
Inventor
Matsuyuki Miyake
Takashi Amano
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 Finetech Nisca Inc
Original Assignee
Copyer 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 Copyer Co Ltd filed Critical Copyer Co Ltd
Priority to JP16562878A priority Critical patent/JPS5593080A/en
Publication of JPS5593080A publication Critical patent/JPS5593080A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect whether the container of a copying machine, etc., contains conductive powder or not, by making use of variation in the impedance of a high- frequency oscillation coil by an adjacent conductive body.
CONSTITUTION: On an external wall close to the bottom of side plate 4 of hopper 1 of a copying machine, detection coil 5 constituting one part of a high-frequency oscillation circuit is installed. The output of this oscillation circuit is led to a circuit composed of a rectifier circuit, switching circuit and display lamp. Now, when the oscillator circuit is driven and there is conductive powder in hopper 1, impedance of coil 5 varies to change oscillation states. Detecting this makes it possible to display whether there is powder left in hopper 1 or not. Further, the detection coil is fitted to any other transport pipe than the hopper to detect the existence of the powder in the transport pipe. In this way, the existence of the conductive powder in the container which can not be confirmed by the eye can easily be detected.
COPYRIGHT: (C)1980,JPO&Japio
JP16562878A 1978-12-30 1978-12-30 Detecting method for conductive powder Pending JPS5593080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16562878A JPS5593080A (en) 1978-12-30 1978-12-30 Detecting method for conductive powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16562878A JPS5593080A (en) 1978-12-30 1978-12-30 Detecting method for conductive powder

Publications (1)

Publication Number Publication Date
JPS5593080A true JPS5593080A (en) 1980-07-15

Family

ID=15815967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16562878A Pending JPS5593080A (en) 1978-12-30 1978-12-30 Detecting method for conductive powder

Country Status (1)

Country Link
JP (1) JPS5593080A (en)

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