JPS6487354A - Ink jet recording device - Google Patents

Ink jet recording device

Info

Publication number
JPS6487354A
JPS6487354A JP24629887A JP24629887A JPS6487354A JP S6487354 A JPS6487354 A JP S6487354A JP 24629887 A JP24629887 A JP 24629887A JP 24629887 A JP24629887 A JP 24629887A JP S6487354 A JPS6487354 A JP S6487354A
Authority
JP
Japan
Prior art keywords
discharge
ink
supply passage
ink supply
suction
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
JP24629887A
Other languages
Japanese (ja)
Inventor
Koichi Sato
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 Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP24629887A priority Critical patent/JPS6487354A/en
Publication of JPS6487354A publication Critical patent/JPS6487354A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To cancel a negative pressure in an ink supply passage securely and thereby obtain a satisfactory printing condition by activating an atmosphere opening valve provided halfway through the ink supply passage which supplies ink to a recording head. CONSTITUTION:A recovery device which normalizes an ink discharge through suction of ink from a discharge port is provided for prevention of inferior ink discharging which is caused by the clogging of the discharge port installed on a recording head or the mixing of air from the discharge port. However, when the thermal head develops a faulty discharge due to a negative load which might generate in an ink supply passage by a suction recovery action, this discharge state cannot be normalized only by manipulation. To eliminate the negative load, an atmosphere opening valve 19 is provided halfway through the ink supply passage, and when the discharge is faulty, the atmosphere opening valve 19 is opened, especially immediately after the action to normalize suction. Thus the negative pressure is canceled from the ink supply passage, and further, the part exposed to the atmosphere acts as a pressure buffer, bringing about a normal discharge condition.
JP24629887A 1987-09-30 1987-09-30 Ink jet recording device Pending JPS6487354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24629887A JPS6487354A (en) 1987-09-30 1987-09-30 Ink jet recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24629887A JPS6487354A (en) 1987-09-30 1987-09-30 Ink jet recording device

Publications (1)

Publication Number Publication Date
JPS6487354A true JPS6487354A (en) 1989-03-31

Family

ID=17146477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24629887A Pending JPS6487354A (en) 1987-09-30 1987-09-30 Ink jet recording device

Country Status (1)

Country Link
JP (1) JPS6487354A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010208143A (en) * 2009-03-10 2010-09-24 Canon Inc Liquid delivering apparatus and method for controlling liquid delivering apparatus
US10639904B2 (en) * 2018-02-07 2020-05-05 Seiko Epson Corporation Liquid ejecting apparatus and method of replacing liquid ejecting head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010208143A (en) * 2009-03-10 2010-09-24 Canon Inc Liquid delivering apparatus and method for controlling liquid delivering apparatus
US8789918B2 (en) 2009-03-10 2014-07-29 Canon Kabushiki Kaisha Liquid ejection apparatus and control method thereof
US10639904B2 (en) * 2018-02-07 2020-05-05 Seiko Epson Corporation Liquid ejecting apparatus and method of replacing liquid ejecting head

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