Printing apparatus with detachable printhead
AssigneeCanon Kabushiki Kaisha
InventorMasaaki Ishihara
Life of this patent
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Abstract
In an embodiment of this invention, a carriage includes a first lever that is operated by an operator to attach or detach a printhead and rotates about a first rotating shaft. The carriage also includes a second lever that rotates about a second rotating shaft parallel to the first rotating shaft and, if the printhead is attached, contacts part of the printhead and presses the printhead in accordance with the rotation. The carriage further includes a spring having one end hung on an end portion of the second lever and the other end hung on part of the carriage. If the printhead is attached, the press force of the spring acts to press the printhead against the carriage in accordance with the rotation of the first lever. If the printhead is detached, no press force acts.
Claims17
A printing apparatus comprising:
- a carriage to which a printhead is detachably mounted;
- an operation member rotatably provided on the carriage and movable between a first position at which the printhead is attached to or detached from the carriage and a second position at which the printhead is fixed to the carriage;
- a fixing member, rotatably provided on the operation member, capable of fixing the printhead to the carriage;
- and
- a spring member attached between the carriage and the fixing member,
- wherein when the operation member is at the second position in a state in which the printhead is mounted to the carriage, the fixing member presses the printhead by pulling the spring member to have a first length, and when the operation member is at the second position in a state in which the printhead is not mounted to the carriage, a length of the spring member becomes a second length shorter than the first length.
Dependencies are inferred from the claim text.