US 6,981,761 B2
Droplet discharge device and liquid filling method therefor, and device manufacturing apparatus, device manufacturing method and device
Takahiro Usui, Shiojiri (Japan); Hirofumi Teramae, Matsumoto (Japan); and Satoru Hosono, Toyoshina-machi (Japan)
Assigned to Seiko Epson Corporation, Tokyo (Japan)
Filed on Sep. 09, 2002, as Appl. No. 10/237,100.
Claims priority of application No. 2001-274804 (JP), filed on Sep. 11, 2001; application No. 2001-274819 (JP), filed on Sep. 11, 2001; application No. 2002-074299 (JP), filed on Mar. 18, 2002; and application No. 2002-261163 (JP), filed on Sep. 06, 2002.
Prior Publication US 2004/0070651 A1, Apr. 15, 2004
Int. Cl. B41J 2/175 (2006.01)
U.S. Cl. 347—85 45 Claims
OG exemplary drawing
 
1. A droplet discharge device which discharges liquid filled into a droplet discharge head, having a filling apparatus which switches between a first liquid and a second liquid of a lower viscosity than said first liquid, and fills said droplet discharge head, wherein viscosity of said first liquid is from 10mPa·s to 50mPa·s.