Title:
LIQUID DROP PLACING DEVICE AND LIQUID DROP PLACING METHOD
Document Type and Number:
WIPO Patent Application WO/2005/090081
Kind Code:
A1
Abstract:
A liquid drop placing device includes an inkjet head (1), a substrate (13) receiving a liquid drop (2) discharged from the inkjet head (1), a device for irradiating or reflecting light from a nozzle hole or its vicinity of the inkjet head (1) toward the substrate (13), a position moving device (10) for controlling relative positions between the inkjet head (1) and the substrate (13), and a control device (9) for discharging liquid from the inkjet head (1). Behind the substrate (13), when seen from the inkjet head (1), is provided a photo receiving element (6) for recognizing the position of the inkjet head (1). The substrate (13) has transparency of the extent where the light irradiated or reflected at least from the nozzle hole or its vicinity toward the substrate (13) enters in the photo receiving element (6), and the photo receiving element (6) detects the light irradiated or reflected from the nozzle hole or its vicinity toward the substrate (13). As a result, relative positions of the inkjet head and the substrate are accurately adjusted even if the distance between the two is short.
Inventors:
NAKAGAWA TOHRU
MINO NORIHISA
MINO NORIHISA
Application Number:
PCT/JP2005/003514
Publication Date:
September 29, 2005
Filing Date:
March 02, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
NAKAGAWA TOHRU
MINO NORIHISA
NAKAGAWA TOHRU
MINO NORIHISA
International Classes:
B05C5/00; B05C5/02; B05C11/00; B05C11/10; B41J2/01; (IPC1-7): B41J2/01; B05C5/00; B05C11/00
Foreign References:
| JPH11339642A | 1999-12-10 |
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP TOWER 8-30, Tenmabashi 1-chome, Kita-k, Osaka-shi Osaka, JP)
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