JPS56122759A - Detecting method of remaining quantity of roll paper - Google Patents

Detecting method of remaining quantity of roll paper

Info

Publication number
JPS56122759A
JPS56122759A JP2381880A JP2381880A JPS56122759A JP S56122759 A JPS56122759 A JP S56122759A JP 2381880 A JP2381880 A JP 2381880A JP 2381880 A JP2381880 A JP 2381880A JP S56122759 A JPS56122759 A JP S56122759A
Authority
JP
Japan
Prior art keywords
roll paper
pressure
pressure sensor
remaining quantity
cylinder
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.)
Granted
Application number
JP2381880A
Other languages
Japanese (ja)
Other versions
JPS5823313B2 (en
Inventor
Takenori Nakatani
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.)
SHINWA NIZAI KK
Original Assignee
SHINWA NIZAI KK
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 SHINWA NIZAI KK filed Critical SHINWA NIZAI KK
Priority to JP2381880A priority Critical patent/JPS5823313B2/en
Publication of JPS56122759A publication Critical patent/JPS56122759A/en
Publication of JPS5823313B2 publication Critical patent/JPS5823313B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

PURPOSE: To correctly obtain the remaining quantity in length of a roll paper, by connecting a pressure sensor, which transmits a signal corresponding to a pressure change in a cylinder, to a port for supplying oil to an oil hydraulic cylinder which actuates elevation of a supporting frame.
CONSTITUTION: In a roll paper supporting device for holding a roll paper 1, a pressure sensor 8, that outputs a signal corresponding to a change of pressure in a hydraculic cylinder 4 for lifting a supporting frame 2 to hold the roll paper 1, is connected to a port side A of the hydraulic cylinder 4. When the roll paper 1 is used and its weight is decreased, the pressure sensor 9 detects a decrease of pressure at the port side A, weight data of the roll paper 1 are converted into length data by a numerical conversion circuit (not shown) and displayed in a numerical value.
COPYRIGHT: (C)1981,JPO&Japio
JP2381880A 1980-02-25 1980-02-25 How to detect the remaining amount of roll paper Expired JPS5823313B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2381880A JPS5823313B2 (en) 1980-02-25 1980-02-25 How to detect the remaining amount of roll paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2381880A JPS5823313B2 (en) 1980-02-25 1980-02-25 How to detect the remaining amount of roll paper

Publications (2)

Publication Number Publication Date
JPS56122759A true JPS56122759A (en) 1981-09-26
JPS5823313B2 JPS5823313B2 (en) 1983-05-14

Family

ID=12120926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2381880A Expired JPS5823313B2 (en) 1980-02-25 1980-02-25 How to detect the remaining amount of roll paper

Country Status (1)

Country Link
JP (1) JPS5823313B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548144A (en) * 1993-03-05 1996-08-20 Mitsubishi Denki Kabushiki Kaisha Recessed gate field effect transistor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548144A (en) * 1993-03-05 1996-08-20 Mitsubishi Denki Kabushiki Kaisha Recessed gate field effect transistor

Also Published As

Publication number Publication date
JPS5823313B2 (en) 1983-05-14

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