| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid discharge state detection device that can detect a liquid discharge state from a recording head. <P>SOLUTION: A liquid discharge state detection device includes: a light emitting element (104) that emits a light beam(103); and a light receiving element (106) that is placed at a position shifted from a beam diameter (ϕ1) of the light beam (103). The light receiving element (106) receives scattered light (S) generated when the light beam (103) collides with a liquid droplet (102). A discharge state of the liquid droplet (102) is detected based on a received light amount of the received scattered light (S). The liquid discharge state detection device further includes an analyzer (107) in the forward direction from the light receiving element(106). The analyzer detects the scattered light (S) having a polarization direction the same as a polarization direction of the light beam (103) emitted from the light emitting element (104). The light receiving element (106) receives the scattered light (S) that has passed through the analyzer (107). <P>COPYRIGHT: (C)2013,JPO&INPIT |
