| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a droplet discharge detection device capable of detecting droplet discharge without disappearing of scattered light scattered by droplet. <P>SOLUTION: The droplet discharge detection device satisfies the following formula:∫[Y<SB POS="POST">PD</SB>=Y<SB POS="POST">1</SB>, Y<SB POS="POST">2</SB>] ∫[X<SB POS="POST">PD</SB>=X<SB POS="POST">1</SB>, X<SB POS="POST">2</SB>] ä[Asc<SP POS="POST">2</SP>+2AdfAsc*cos[2π(L<SB POS="POST">df</SB>-L<SB POS="POST">sc</SB>)/λ]]}dX<SB POS="POST">PD</SB>dY<SB POS="POST">PD</SB>>0. In the formula, Y<SB POS="POST">PD</SB>denotes a Y-direction position on a light-receiving surface of a light-receiving means; Y<SB POS="POST">1</SB>, Y<SB POS="POST">2</SB>denote effective detection ranges in the Y-direction on the light-receiving surface of the light-receiving means; X<SB POS="POST">PD</SB>denotes an X-direction position on the light-receiving surface of the light-receiving means; X<SB POS="POST">1</SB>, X<SB POS="POST">2</SB>denote effective detection ranges in the X-direction on the light-receiving surface of the light-receiving means; L<SB POS="POST">df</SB>denotes a light path length from a center of a light-emitting means opening part of diffracted light to the light-receiving surface of the light-receiving means; Adf denotes amplitude of the diffracted light; Asc denotes amplitude of the scattered light; L<SB POS="POST">sc</SB>denotes a light path length from the center of the light-emitting means opening part of the scattered light to the light-receiving surface of the light-receiving means; λ denotes wavelength of light. <P>COPYRIGHT: (C)2013,JPO&INPIT |
