A printing apparatus including: a first roller mechanism including: a first shaft part having a first gear; and a first roller in which the first shaft part is inserted; and a second roller mechanism including: a movable holder configured to be moved in directions coming close to and being separated from a printing medium by a displacement mechanism; a second shaft part which is rotatably supported on the movable holder and having a second gear; a second roller in which the second shaft part is inserted, tiltable with respect to a shaft center of the second shaft part, and having an engaging groove recessed in an inner peripheral surface of an intermediate part of the second roller in a shaft center direction; and a protrusion protruding from an outer peripheral surface of the second shaft part and engaged with the engaging groove of the second roller.

A printing apparatus including: a first roller mechanism including: a first shaft part having a first gear; and a first roller in which the first shaft part is inserted; and a second roller mechanism including: a movable holder configured to be moved in directions coming close to and being separated from a printing medium by a displacement mechanism; a second shaft part which is rotatably supported on the movable holder and having a second gear; a second roller in which the second shaft part is inserted, tiltable with respect to a shaft center of the second shaft part, and having an engaging groove recessed in an inner peripheral surface of an intermediate part of the second roller in a shaft center direction; and a protrusion protruding from an outer peripheral surface of the second shaft part and engaged with the engaging groove of the second roller.

A cassette includes: a housing; and a medium having a first portion contained in the housing and a second portion protruding to an outside of the housing. The second portion of the medium is a protruding portion having an indicator portion on which information is printed.

A cassette includes: a housing; and a medium having a first portion contained in the housing and a second portion protruding to an outside of the housing. The second portion of the medium is a protruding portion having an indicator portion on which information is printed.

Braille writing devices and systems, and corresponding methods of writing braille characters on a tape medium are described herein. The devices and systems emboss tactile dots on different types of tape medium to enable braille character writing and advance the tape medium to create accurate and repeatable spacing of the braille characters. The devices and systems may be comprised of simply molded plastic parts that snap together using elastically averaging precision alignment features.