Printer

摘要

The platen gap adjustment mechanism 70 of a printer 1 adjusts a gap between a printhead 59 and a platen 25 by moving first and second guide rails 57, 58 that support the head carriage 59 in a gap adjustment direction relative to the platen 25. A rotary mechanism for synchronously rotating the first and second guide rails 57, 58 to adjust the gap has a rotary shaft 101 perpendicular to the first and second guide rails 57, 58; first and second drive-side gears (e.g. worms) 104, 105 disposed coaxially to the rotary shaft 101; a first driven-side gear (e.g. worm wheel) 106 disposed coaxially to the first guide rail 57 and meshing with the first drive-side gear 104; and a second driven-side gear (e.g. worm wheel) 107 disposed coaxially to the second guide rail 58 and meshing with the second drive-side gear 105.

主权项

1. A printer comprising:
a printhead; a head carriage carrying the printhead; a first guide rail and a second guide rail that are mutually parallel and support the head carriage; a platen opposite the printhead; and a platen gap adjustment mechanism that adjusts a gap between the printhead and the platen by moving the first and second guide rails along a gap adjustment direction to approach or recede from the platen, said platen gap adjustment mechanism having a rotary mechanism that synchronously drives the first guide rail and the second guide rail in synchronous rotation, wherein the moving of the first and second guide rails along the gap adjustment direction is dependent upon the synchronous rotation of the first and second guide rails; said rotary mechanism including:
a rotary shaft extending perpendicularly to the first guide rail and the second guide rail,a first drive-side gear and a second drive-side gear coaxially attached to the rotary shaft,a first driven-side gear coaxially attached to the first guide rail and meshing with the first drive-side gear, anda second driven-side gear coaxially attached to the second guide rail and meshing with the second drive-side gear.