Global Patent Index - EP 0987111 A2

EP 0987111 A2 20000322 - Actuator unit

Title (en)

Actuator unit

Title (de)

Antreibseinheit

Title (fr)

Organe d'actionnement

Publication

EP 0987111 A2 20000322 (EN)

Application

EP 99124227 A 19961108

Priority

  • EP 96117927 A 19961108
  • JP 31722495 A 19951110
  • JP 27709596 A 19960927

Abstract (en)

The invention relates to an actuator unit, especially for use in an ink jet type recording head. The actuator unit comprises a plurality of pressure generating means and a plurality of pressure generating chambers (2, 3) for pressurizing ink through actuation of said pressure generating means. The pressure generating chambers (2, 3) are arranged in line along an arrangement direction (A-A, B-B) and are inclined at an angle θ with respect to the arrangement direction (A-A, B-B) with the angle θ having a value other than 90°. Further, the actuator unit advantageously comprises a spacer (1), a diaphragm, a cover sheet and an ink feed passage composing sheet. Outer walls (1a, 1b) of a spacer 1 of the actuator unit are also preferably inclined at an angle θ with respect to the arrangement lines A-A, B-B of pressure generating chambers (2, 3).

IPC 1-7

B41J 2/14

IPC 8 full level

B41J 2/14 (2006.01); B41J 2/145 (2006.01); B41J 2/155 (2006.01)

CPC (source: EP)

B41J 2/14233 (2013.01); B41J 2/14274 (2013.01); B41J 2/145 (2013.01); B41J 2/155 (2013.01); B41J 2002/14362 (2013.01); B41J 2002/14419 (2013.01); B41J 2202/19 (2013.01); B41J 2202/20 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0985536 A1 20000315; EP 0985536 B1 20020925; EP 0987111 A2 20000322; EP 0987111 A3 20000412; EP 0987111 B1 20020918

DOCDB simple family (application)

EP 99124228 A 19961108; EP 99124227 A 19961108