Patent ID: 9315060
Filing Date: 2016-04-19
CPC Classification: B41J,H04R

Claim Text:
1. A recording apparatus comprising: a movement unit that reciprocates while sliding along a guide shaft; a sound collection unit that is disposed in the movement unit and collects a sound generated due to the sliding; and a processing unit that processes a sound collected by the sound collection unit, wherein the processing unit includes an output unit which outputs a first sound pressure-position graph for obtaining a relationship of a sound pressure value with a position in a movement direction of the movement unit by collecting a sound generated due to the repeated reciprocating movement during a first predetermined time period, and a second sound pressure-position graph for obtaining a relationship of a sound pressure value with a position in the movement direction of the movement unit by collecting a sound generated due to the repeated reciprocating movement during a second predetermined time period, so as to be comparable with each other, wherein the processing unit separately obtains the first sound pressure-position graph and the second sound pressure-position graph in a forward route and a rearward route in the reciprocating movement.