JPS54133373A - Ink level detecting device in ink tank for ink jet - Google Patents

Ink level detecting device in ink tank for ink jet

Info

Publication number
JPS54133373A
JPS54133373A JP4104278A JP4104278A JPS54133373A JP S54133373 A JPS54133373 A JP S54133373A JP 4104278 A JP4104278 A JP 4104278A JP 4104278 A JP4104278 A JP 4104278A JP S54133373 A JPS54133373 A JP S54133373A
Authority
JP
Japan
Prior art keywords
ink
groove
photo detector
side wall
light
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
JP4104278A
Other languages
Japanese (ja)
Inventor
Takuo Isayama
Takeshi Takemoto
Tsutomu Sato
Takao Fukazawa
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 JP4104278A priority Critical patent/JPS54133373A/en
Publication of JPS54133373A publication Critical patent/JPS54133373A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/17Ink jet characterised by ink handling
    • B41J2/175Ink supply systems ; Circuit parts therefor
    • B41J2/17566Ink level or ink residue control

Abstract

PURPOSE:To detect the level of ink from the groove in a simple device and at high reliability according to the detection signal of photo detector, by providing a groove to introduce ink in the side wall of ink tank made from light transmitting material, and disposing light emitting device and photo detector in the side wall across the groove. CONSTITUTION:An ink tank 3 is made from light transmitting material, and a groove 9 is formed in the inside of the side wall thereof. A light emitting device 7 and a photo detector 8 are buried in the side wall above and beneath the groove 9, and a shielding plate 10 is disposed on the outside so as to be free from effects of disturbance light. When the ink level in the ink tank is above the groove 9, the groove 9 is filled with ink, so that the quantity of light detected by the photo detector 8 is small. When the ink level decreases beneath the groove 9, the quantity of light detected by the photo detector 8 increases, which appears as the change in voltage of the photo detector 8. This voltage is compared with the reference voltage by means of a voltage comparator or the like, and the ink remaining quantity is detected depending on ''0'' or ''1'' output of the voltage comparator.
JP4104278A 1978-04-07 1978-04-07 Ink level detecting device in ink tank for ink jet Pending JPS54133373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4104278A JPS54133373A (en) 1978-04-07 1978-04-07 Ink level detecting device in ink tank for ink jet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4104278A JPS54133373A (en) 1978-04-07 1978-04-07 Ink level detecting device in ink tank for ink jet

Publications (1)

Publication Number Publication Date
JPS54133373A true JPS54133373A (en) 1979-10-17

Family

ID=12597337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4104278A Pending JPS54133373A (en) 1978-04-07 1978-04-07 Ink level detecting device in ink tank for ink jet

Country Status (1)

Country Link
JP (1) JPS54133373A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712667A (en) * 1993-08-25 1998-01-27 Canon Kabushiki Kaisha Means for and method of detecting the state of ink remain in a cartridge having containing portions differing in ink containing state
US6086178A (en) * 1995-06-19 2000-07-11 Canon Kabushiki Kaisha Ink detection for printers and scanners
JP2014195908A (en) * 2013-03-29 2014-10-16 セイコーエプソン株式会社 Liquid jet device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712667A (en) * 1993-08-25 1998-01-27 Canon Kabushiki Kaisha Means for and method of detecting the state of ink remain in a cartridge having containing portions differing in ink containing state
US6679574B2 (en) 1993-08-25 2004-01-20 Canon Kabushiki Kaisha Means for and method of detecting the state of ink remain in a cartridge having containing portions differing in ink containing state
US6086178A (en) * 1995-06-19 2000-07-11 Canon Kabushiki Kaisha Ink detection for printers and scanners
JP2014195908A (en) * 2013-03-29 2014-10-16 セイコーエプソン株式会社 Liquid jet device

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