Sheet material transport apparatus and recording apparatus

Abstract

The present invention provides a sheet material transport apparatus and a recording apparatus, capable of preventing a transmission gear from hooking a planetary gear due to rotation when the planetary gear will be separated from the transmission gear. The sheet material transport apparatus includes a second planetary gear engaging with the transmission gear and providing planetary motion around the transmission gear. The second planetary gear is in a second separated position not capable of engaging with a first planetary gear during forward-direction rotation. The transmission gear engages with the first planetary gear and rotates in a direction that causes a second transport roller to rotate in the forward rotation direction, and positioned to engage with the first planetary gear that is positioned in a first engaging position during reverse rotation. A load is placed on the transmission gear by the second transport roller. The transmission gear rotates in the opposite direction tothe forward-direction rotation. The second planetary gear applies a force on the first planetary gear in the direction that separates the first planetary gear from the transmission gear due to rotation.

Description

Technical field [0001] The present invention relates to a sheet conveying device and a recording device. Background technique [0002] As a recording device that performs recording processing on a recording medium, for example, an inkjet printer described in Patent Document 1 below is known. [0003] In a sheet conveying device that conveys various sheets of paper, cloth, film, etc., as described in Patent Document 1, a planetary gear that can mesh with and disengage a transmission gear by planetary motion is provided. A wheel set mechanism that performs switching on and off of power to the above-mentioned transmission gear has been widely used. [0004] [Patent Document 1] JP 2008-74582 A [0005] However, according to the positional relationship between the planetary gear and the transmission gear, the rotation direction of the transmission gear when the planetary gear is about to leave the transmission gear becomes the direction that hinders the aforementioned separation of the pl...

AI Technical Summary

Problems solved by technology

[0005] However, depending on the positional relationship between the planetary gear and the transmission gear, the rotation direction of the transmission gear when the planetary gear is about to separate from the transmission gear may become a direction that hinders the above-mentioned separation of the planetary gear, and as a result, the teeth of the planetary gear bite into the transmission gear. teeth, the planetary gear cannot be separated from the transmission gear

In particular, when the planetary gear is about to be separated from the transmission gear, if the transmission gear rotates in the opposite direction due to other reasons than the rotation received from the planetary gear, the planetary gear cannot be separated from the transmission gear.

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