JPS54133373A - Ink level detecting device in ink tank for ink jet - Google Patents
Ink level detecting device in ink tank for ink jetInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters 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
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17566—Ink 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.
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)
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 |
-
1978
- 1978-04-07 JP JP4104278A patent/JPS54133373A/en active Pending
Cited By (4)
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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