Patent ID: 9592673
Date: 2017-03-14
CPC Classifications: B41J

Claim:
1. A maintenance device comprising: a wiper that wipes a liquid ejecting unit; a double rack member which includes a pair of rack sections made up of a first rack section and a second rack section and is configured to reciprocate the wiper; and an intermittent gear which includes a teeth portion which meshes with one of two paired rack sections during rotation in one direction and a toothless portion which is arranged in line with the teeth portion in a rotation direction, wherein the double rack member allows the wiper to perform a forward motion when the first rack section meshes with the intermittent gear, and allows the wiper to form a backward motion when the second rack section meshes with the intermittent gear, wherein the intermittent gear includes a projection that extends in the rotation direction as part of the toothless portion, and, after one of the two rack sections disengages from the teeth portion, the projection comes into contact with the one rack section before the teeth portion engages with the other rack section.