Patent ID: 9120337
Filing Date: 2015-09-01
Classification: B41J,B65H

Abstract:
1. A printer comprising: a roll storage part configured to rotatably store a roll that winds a print-receiving medium around a predetermined axis; a feeder configured to pull out and feed said print-receiving medium from said roll; a printing head configured to perform desired printing on said print-receiving medium fed by said feeder; a first guide member configured to contact an end surface of said roll on one side in a width direction of said roll and guide said print-receiving medium in a width direction and provided to said roll storage part in an advanceable and retreatable manner along said width direction; a second guide member configured to contact an end surface of said roll on the other side in said width direction and guide said print-receiving medium in the width direction and provided to said roll storage part in an advanceable and retreatable manner along said width direction; a driving gear for making said first guide member and said second guide member advance and retreat along said width direction in tandem with each other; and a plurality of support rollers provided inside said roll storage part so that a rotation axis is parallel with a width direction of said roll and configured to contact an outer peripheral surface of said roll and be driven to rotate so as to rotatably support said roll when said print-receiving medium is pulled out from said roll by a feeding of said feeder, said roll storage part comprising: a first through-hole provided along said width direction for guiding said first guide member in said width direction on a bottom surface; and a second through-hole provided along said width direction for guiding said second guide member in said width direction on the bottom surface; said first guide member comprising: a first driven part positioned above said bottom surface and configured to mesh with said driving gear and receive transmission of a driving force from said driving gear; and a first sandwiching part positioned below said bottom surface and configured to hold said first guide member in an advanceable and retreatable manner to said bottom surface by sandwiching said bottom surface with said first driven part; and said second guide member comprising: a second driven part positioned above said bottom surface and configured to mesh with said driving gear and receive transmission of a driving force from said driving gear; and a second sandwiching part positioned below said bottom surface and configured to hold said second guide member in an advanceable and retreatable manner to said bottom surface by sandwiching said bottom surface with said second driven part, said plurality of support rollers comprising: a third support roller that is provided above said first driven part; a second support roller that is provided above said second driven part; and a first support roller that is provided above said second support roller and said third support roller and closer to the printing head than said second support roller or said third support roller, a position of said second support roller in a height direction being substantially equal to a position of said third support roller in said height direction, and said first guide member and said second guide member respectively being provided above said first support roller.