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Title:
【発明の名称】連続式インクジェットプリンタ用2段構成ポンプ
Document Type and Number:
Japanese Patent JPH06502467
Kind Code:
A
Abstract:
PCT No. PCT/GB91/01872 Sec. 371 Date Mar. 16, 1993 Sec. 102(e) Date Mar. 16, 1993 PCT Filed Oct. 25, 1991 PCT Pub. No. WO92/08052 PCT Pub. Date May 14, 1992.A two-stage pump (9) for a continuous ink jet printing system comprises a first stage (A) which includes a chamber (91,92) having an inlet (93) and an outlet (94) via a non-return valve (115) to a channel (95). The first stage chamber (91,92) is divided by a dished diaphragm (101) movable by a first cylinder (97) mounted on a pump shaft (98). The pump (9) has a second stage (B) comprising a chamber (104,105) having an inlet (106) from the channel (95) and an outlet (107). The second stage chamber (104,105) is divided by a rolling diaphragm (116) movable by a second cylinder (108) mounted on a pump shaft (98). The cylinders (97,108) are arranged to be driven, and thus drive their respective diaphragms (101,116), 180 DEG out of phase so that ink and air enters the first stage chamber (91,92), is pressurised by the first cylinder (97) and passed through the channel (95) to the second stage chamber, and is further pressurised and passed out of the outlet (107) of the second stage chamber (104,105).

Inventors:
Fry, andrew robert
Turner, Jeremy John
Application Number:
JP51772991A
Publication Date:
March 17, 1994
Filing Date:
October 25, 1991
Export Citation:
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Assignee:
Domino printing science plc
International Classes:
B41J2/175; F04B19/06; F04B43/02; (IPC1-7): F04B43/02; B41J2/175; F04B19/06
Attorney, Agent or Firm:
Shin Koizumi (2 outside)



 
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