JPS55109778A - Constant flow pump - Google Patents

Constant flow pump

Info

Publication number
JPS55109778A
JPS55109778A JP1684479A JP1684479A JPS55109778A JP S55109778 A JPS55109778 A JP S55109778A JP 1684479 A JP1684479 A JP 1684479A JP 1684479 A JP1684479 A JP 1684479A JP S55109778 A JPS55109778 A JP S55109778A
Authority
JP
Japan
Prior art keywords
ink
chamber
piston
constant flow
transfer
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
JP1684479A
Other languages
Japanese (ja)
Inventor
Masafumi Matsumoto
Matahei Kotani
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP1684479A priority Critical patent/JPS55109778A/en
Publication of JPS55109778A publication Critical patent/JPS55109778A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ink Jet (AREA)
  • Reciprocating Pumps (AREA)

Abstract

PURPOSE: To make it possible to supply an ink at a constant rate, by a constant flow pump having a first and a second pressure chambers, the first pressure chamber being of a piston type incorporating a piston the compression time of which is shorter than the suction time, the second chamber being opposed by the first chamber to reduce the leakage.
CONSTITUTION: Negative pressure is generated through the transfer of a piston 13 of which the compression operation time is set shorter than the suction operation time. Therefore, the ball valve of an inflow valve mechanism 24 is pushed up counter to the force of a spring and a corresponding quantity of ink to the transfer distance of the piston 13 is sucked into a first pressure chamber 15 from a recovery tank 30 through a pipe 34. Negative pressure is also generated in a second pressure chamber 16 through the transfer of a diaphragm 14. Therefore, the ball valve of a inflow valve mechanism 26 opens so that the ink captured by an ink recovery gutter 8 is sucked into the chamber 16 through a pipe 28. This operation is repeated in accordance with the revolution of an eccentric cam 19 for supplyng a constant flow of ink.
COPYRIGHT: (C)1980,JPO&Japio
JP1684479A 1979-02-15 1979-02-15 Constant flow pump Pending JPS55109778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1684479A JPS55109778A (en) 1979-02-15 1979-02-15 Constant flow pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1684479A JPS55109778A (en) 1979-02-15 1979-02-15 Constant flow pump

Publications (1)

Publication Number Publication Date
JPS55109778A true JPS55109778A (en) 1980-08-23

Family

ID=11927510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1684479A Pending JPS55109778A (en) 1979-02-15 1979-02-15 Constant flow pump

Country Status (1)

Country Link
JP (1) JPS55109778A (en)

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