PRINTER AND ROLL PAPER HOLDING MECHANISM
First Claim
1. A printer comprising:
- a sheet holding unit configured to have a reference plane for positioning a first end face of roll paper and rotatably hold the roll paper according to an end face reference by the reference plane;
a conveying unit configured to draw out the roll paper held by the sheet holding unit and guide and convey the roll paper along a predetermined guide path;
a printing unit configured to apply printing based on print data to the roll paper guided and conveyed through the guide path;
a contact body configured to have a contact section and to be rotatably provided with the contact section located on a free end side, the contact section coming into contact with a second end face of the roll paper held by the sheet holding unit; and
an urging unit configured to urge the contact body in a first rotating direction for bringing the contact section close to the second end face of the roll paper and bring the contact section into contact with the second end face to bring the first end face of the roll paper into contact with the reference plane.
1 Assignment
0 Petitions
Accused Products
Abstract
A sidewall supports, in a cantilever state, a sheet holding shaft for holding a label sheet wound in a roll shape and positions a first end face, which is one end face, of the label sheet inserted over the sheet holding shaft. A roll paper holding mechanism that presses a second end face, which is the other end face, of the label sheet, has a first arm, a second arm, and a spring. The first arm projects from the sidewall and rotatably supports the second arm at an end thereof. The spring connects the first arm and the second arm and urges and pulls the second arm. The second arm comes into contact with the second end face of the label sheet in a process of being pulled to rotate and holds the label sheet in conjunction with the sidewall functioning as a reference plane.
5 Citations
9 Claims
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1. A printer comprising:
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a sheet holding unit configured to have a reference plane for positioning a first end face of roll paper and rotatably hold the roll paper according to an end face reference by the reference plane; a conveying unit configured to draw out the roll paper held by the sheet holding unit and guide and convey the roll paper along a predetermined guide path; a printing unit configured to apply printing based on print data to the roll paper guided and conveyed through the guide path; a contact body configured to have a contact section and to be rotatably provided with the contact section located on a free end side, the contact section coming into contact with a second end face of the roll paper held by the sheet holding unit; and an urging unit configured to urge the contact body in a first rotating direction for bringing the contact section close to the second end face of the roll paper and bring the contact section into contact with the second end face to bring the first end face of the roll paper into contact with the reference plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A roll paper holding mechanism comprising:
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a contact body configured to have a contact section and to be rotatably provided with the contact section located on a free end side, the contact section coming into contact with a second end face of roll paper held by a sheet holding unit of a printer, which has a reference plane for positioning a first end face of the roll paper, according to an end face reference by the reference plane; and an urging unit configured to urge the contact body in a first rotating direction for bringing the contact section close to the second end face of the roll paper and bring the contact section into contact with the second end face to bring the first end face of the roll paper into contact with the reference plane.
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Specification