Printer

Patent metadata

Field	Value
Publication number	US-9481183-B2
Application number	US-201514778905-A
Country	US
Kind code	B2
Filing date	Jan 14, 2015
Priority date	Mar 31, 2014
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

Provided is a printer in which the rotating shaft of a ribbon roller can be connected to its driving unit with high accuracy by using a mechanism simple in structure, while preventing breakage that may occur when connecting the rotating shaft to the driving unit. The printer ( 1 ) includes a cabinet ( 7 ), a drawer unit ( 11 ) which can be drawn out of the cabinet, a ribbon roller ( 4 A, 4 B) on which a belt-like ink ribbon used for transferring to a recording sheet is wound, a driving unit ( 31 A, 31 B) which drives the ribbon roller for rotation by being connected to a rotating shaft ( 14 A, 14 B) of the ribbon roller when the drawer unit is loaded in the cabinet, and a disengaging member ( 40 ) which is provided on the cabinet and which disengages the driving unit from the rotating shaft when the drawer unit is drawn out of the cabinet.

First claim

What is claimed is:

1. A printer comprising:
a cabinet;
a drawer unit which can be drawn out of the cabinet;
a ribbon roller on which a belt-like ink ribbon used for transferring to a recording sheet is wound;
a driving unit which drives the ribbon roller for rotation by being connected to a rotating shaft of the ribbon roller when the drawer unit is loaded in the cabinet;
a pressing member which provides a force in a direction of engagement with the rotating shaft; and
a disengaging member which is provided on the cabinet and which disengages the driving unit from the rotating shaft when the disengaging member is in contact with a moving member, in a state where the drawer unit is drawn out of the cabinet.

2. The printer according to claim 1 , wherein
the driving unit is mounted to the moving member which is provided on the drawing unit so as to be movable along an axial direction of the rotating shaft inside the drawer unit,
the moving member includes a protruding portion, and
the disengaging member disengages the driving unit from the rotating shaft by contacting the protruding portion of the moving member and thereby moving the moving member when the drawer unit is drawn out of the cabinet.

3. The printer according to claim 2 , wherein the disengaging member has a sloping face which guides the protruding portion of the moving member in a direction in which the moving member disengages from the ribbon roller when the drawer unit is drawn out of the cabinet.

4. The printer according to claim 2 , wherein the protruding portion of the moving member is a lever which, when the drawer unit is drawn out of the cabinet, is rotated by contacting the disengaging member and thereby causes the moving member to move in a direction in which the moving member disengages from the ribbon roller.

Assignees

• Citizen Holdings Co Ltd
• Citizen Systems Japan Co Ltd

Inventors

• Takahashi Akira
• Taguchi Yuichi

Classifications

• B41J2/33 Primary

  from ink roller · CPC title

• B41J2/325 Primary

  by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet · CPC title

• B41J17/24

  Webs supplied from reels or spools attached to the machine · CPC title

• B41J29/02

  Framework · CPC title

• B41J33/18

  by ratchet mechanism (B41J33/30 takes precedence) · CPC title