| 摘要 |
A printing device is provided to allow a backward and forward movement tool not to interfere a carrier path of a palette by installing in a lower carrier path. A printing device comprises backward and forward movement tools(220,230). The backward and forward movement tools included a first and second follower sprockets(222,232,224,234) installed in an upper carrier path; a pair of drive sprockets(221,231) installed in the second follower sprocket; a drive shaft connected to a drive sprocket in the downside of the lower carrier path; and a drive unit rotating the drive shaft in the downside of the lower carrier path.
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