JPH0332850A - Ink jet head - Google Patents

Ink jet head

Info

Publication number
JPH0332850A
JPH0332850A JP16738389A JP16738389A JPH0332850A JP H0332850 A JPH0332850 A JP H0332850A JP 16738389 A JP16738389 A JP 16738389A JP 16738389 A JP16738389 A JP 16738389A JP H0332850 A JPH0332850 A JP H0332850A
Authority
JP
Japan
Prior art keywords
ink
head
amount
detected
refilling
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
JP16738389A
Inventor
Yoshinori Miyazawa
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP16738389A priority Critical patent/JPH0332850A/en
Publication of JPH0332850A publication Critical patent/JPH0332850A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To obtain an ink jet head provided with an ink amount detection means with high accuracy and high reliability using a small amount of ink by a method wherein a heating resistor is electrically conducted to be heated, and a contained ink amount is detected by the detection of the heat release efficiencies of the heating resistor when it exists in the air and in a liquid.
CONSTITUTION: When an amount of liquid state ink remaining inside a head is detected to be not more than a predetermined value by an ink amount detector 27 inside the head, an ink refilling request signal is outputted. Namely, the liquid surface of ink 23 is required to be positioned lower than the axis of a nozzle opening 22 for keeping the inside of the head in a vacuum state. To keep an ink amount up to L2 or lower, an ink refilling signal is outputted when an ink liquid surface reaches L1 lower than L2, a predetermined amount of ink is refilled, and the ink liquid surface is raised. Therefore, whether or not an ink surface is present at a level L1 is detected by extending a heating resistor wire 29 at the position L1. In an ink refilling action, with the output of an ink refilling request signal from the head, the head opens a cover 26 and moves to an ink supply position, and a mass of ink is charged from an ink supply device.
COPYRIGHT: (C)1991,JPO&Japio
JP16738389A 1989-06-29 1989-06-29 Ink jet head Pending JPH0332850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16738389A JPH0332850A (en) 1989-06-29 1989-06-29 Ink jet head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16738389A JPH0332850A (en) 1989-06-29 1989-06-29 Ink jet head

Publications (1)

Publication Number Publication Date
JPH0332850A true JPH0332850A (en) 1991-02-13

Family

ID=15848692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16738389A Pending JPH0332850A (en) 1989-06-29 1989-06-29 Ink jet head

Country Status (1)

Country Link
JP (1) JPH0332850A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645243A2 (en) * 1993-09-23 1995-03-29 OLIVETTI-CANON INDUSTRIALE S.p.A. Refillable ink jet printing module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645243A2 (en) * 1993-09-23 1995-03-29 OLIVETTI-CANON INDUSTRIALE S.p.A. Refillable ink jet printing module
EP0645243A3 (en) * 1993-09-23 1995-08-16 Olivetti Canon Ind Spa Refillable ink jet printing module.
US5555007A (en) * 1993-09-23 1996-09-10 Olivetti-Canon Industriale, S.P.A. Refillable ink jet printing module

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