FLOW PASSAGE MEMBER, LIQUID SPRAYING HEAD AND LIQUID SPRAYING DEVICE

• Main Author: TOGASHI ISAMU
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2015
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide a flow passage member that can secure degrees of freedom for arrangement of a flow passage and a head main body and suppress stagnation of bubbles at a branched flow passage, a liquid spraying head comprising the flow passage member and a liquid spraying device.SOLUTION: The flow passage member comprises a first branched flow passage part 261a and a first flow passage part 251a communicated with a head main body through the first branched flow passage part 261a. The first branched flow passage part 261a includes an upstream side flow passage part 310 and a downstream side flow passage part 320. The first flow passage part 251a is arranged on a first flow passage forming face including the first branched flow passage part 261a and the first flow passage part 251a so that a direction K of liquid flowing in the first flow passage part 251a and a direction L of liquid flowing in the downstream side flow passage part 320 form a sharp angle. An angle formed by a first wall face 254 further downstream than the upstream side flow passage part 310 of the first flow passage part 251a and a second wall face 315 of the upstream side flow passage part 310 continuous to the first wall face 254 is set to be equal to 90 degrees or less and the second wall face 315 of the upstream side flow passage part 310 is formed in a R shape. 【課題】流路及びヘッド本体の配置の自由度を確保するとともに、分岐流路での気泡の滞留を抑制することができる流路部材、該流路部材を備えた液体噴射ヘッド及び液体噴射装置を提供する。【解決手段】第１分岐流路部２６１ａと、第１分岐流路部２６１ａを介してヘッド本体に連通した第１流路部２５１ａとを備え、第１分岐流路部２６１ａは、上流側流路部３１０と、下流側流路部３２０とを含み、第１流路部２５１ａは、第１分岐流路部２６１ａ及び第１流路部２５１ａを含む第１流路形成面において、第１流路部２５１ａ内を流れる液体の方向Ｋと、下流側流路部３２０内を流れる液体の方向Ｌとが鋭角をなして配置され、第１流路部２５１ａの上流側流路部３１０よりも下流側の第１壁面２５４と、第１壁面２５４に連続した上流側流路部３１０の第２壁面３１５とがなす角度 が９０度以下であり、上流側流路部３１０の第２壁面３１５はＲ形状となっている。【選択図】図１８