Cutting device and printer

Patent metadata

Field	Value
Publication number	US-12415373-B2
Application number	US-202117206571-A
Country	US
Kind code	B2
Filing date	Mar 19, 2021
Priority date	Apr 30, 2020
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A cutting device includes a support base, a cutting blade, and a holding member. The cutting blade has first and second holes and a blade edge. The blade edge has a first convex portion and a second convex portion, provided at a position corresponding to the first and second holes, respectively. In a case where the cutting blade is arranged at a cutting position, a maximum value of a distance between the blade edge and the support base within a range between the first and second holes in a longitudinal direction of the cutting blade is smaller than a maximum value of a distance between the blade edge and the support base. The cutting blade is fixed to the holding member by a first hole coupling member, and the holding member holds the cutting blade so as to be movable to the cutting position and a spaced position.

First claim

What is claimed is:

1. A cutting device comprising:
a support base;
a cutting blade configured to cut at least a part of a tape arranged between the cutting blade and the support base in a state where the cutting blade is arranged at a cutting position close to the support base, the cutting blade having:
a first hole penetrating in a thickness direction of the cutting blade;
a second hole arranged side by side with the first hole in a longitudinal direction of the cutting blade; and
a blade edge extending in the longitudinal direction of the cutting blade, the blade edge having a first convex portion and a second convex portion, the first convex portion being provided at a position corresponding to the first hole in the longitudinal direction of the cutting blade and being convex in a first direction which is a direction from the first hole toward the blade edge, and the second convex portion being provided at a position corresponding to the second hole in the longitudinal direction of the cutting blade and being convex in the first direction, the first convex portion having a first arc shape including a first center and the second convex portion having a second arc shape including a second center spaced away from the first center, and

a holding member to which the cutting blade is fixed by a first hole coupling member inserted in the first hole, the holding member holding the cutting blade so as to be movable to the cutting position and a spaced position at which the cutting blade is distant from the support base,
wherein a first hole and the second hole are located within an intermediate range (R 2 ) of the cutting blade in the longitudinal direction,
wherein the blade edge includes a first portion that is outside of the intermediate range and spaced away from the support base by a first maximum distance in the state where the cutting blade is arranged at the cutting position, and
wherein the blade edge includes a second portion that spans the intermediate range and is spaced away from the support base by a second maximum distance that is smaller than the first maximum distance in the state where the cutting blade is arranged at the cutting position.

2. The cutting device according to claim 1 ,
wherein the second hole penetrates in the thickness direction of the cutting blade, and
wherein the cutting blade is fixed to the holding member by the first hole coupling member inserted in the first hole and a second hole coupling member inserted in the second hole.

3. The cutting device according to claim 1 ,
wherein the second hole is not used for fixing the cutting blade to the holding member and is exposed with respect to the holding member.

4. The cutting device according to claim 1 ,
wherein each of the first hole and the second hole has a shear surface and a fracture surface.

5. The cutting device according to claim 1 ,
wherein a center of the first convex portion in the longitudinal direction of the cutting blade is within an extension range of the first hole in the longitudinal direction of the cutting blade, and
wherein a center of the second convex portion in the longitudinal direction of the cutting blade is within an extension range of the second hole in the longitudinal direction of the cutting blade.

6. The cutting device according to claim 1 ,
wherein in a state where the cutting blade is arranged at the cutting position, an extension range of the first convex portion and an extension range of the second convex portion in the longitudinal direction of the cutting blade are within a range in which the blade edge faces the support base in the longitudinal direction of the cutting blade.

7. The cutting device according to claim 1 ,
wherein the cutting blade further has a third hole arranged side by side with the first hole and the second hole in the longitudinal direction of the cutting blade,
wherein the blade edge further has a third convex portion provided at a position corresponding to the third hole in the longitudinal direction of the cutting blade and being convex in the first direction,
wherein the third hole is located within the intermediate range in the longitudinal direction of the cutting blade.

8. The cutting device according to claim 7 ,
wherein the second hole penetrates in the thickness direction of the cutting blade,
wherein the cutting blade is fixed to the holding member by the first hole coupling member inserted in the first hole and a second hole coupling member inserted in the second hole, and
wherein the third hole is not used for fixing the cutting blade to the holding member and is exposed with respect to the holding member.

9. The cutting device according to claim 8 ,
wherein the third hole is arranged between the first hole and the second hole in the longitudinal direction of the cutting blade.

10. The cutting device according to claim 7 ,
wherein each of the first hole, the second hole and the third hole has a shear surface and a fracture surface.

11. The cutting device according to claim 7 ,
wherein a center of the first convex portion in the longitudinal direction of the cutting blade is within an extension range of the first hole in the longitudinal direction of the cutting blade,
wherein a center of the second convex portion in the longitudinal direction of the cutting blade is within an extension range of the second hole in the longitudinal direction of the cutting blade, and
wherein a center of the third convex portion in the longitudinal direction of the cutting blade is within an extension range of the third hole in the longitudinal direction of the cutting blade.

12. The cutting device according to claim 7 ,
wherein in a state where the cutting blade is arranged at the cutting position, an extension range of the first convex portion, an extension range of the second convex portion, and an extension range of the third convex portion in the longitudinal direction of the cutting blade are within a range in which the blade edge faces the support base in the longitudinal direction of the cutting blade.

13. The cutting device according to claim 7 ,
wherein a part of the first hole, a part of the second hole, and a part of the third hole are arranged on a same straight line extending in the longitudinal direction of the cutting blade.

14. The cutting device according to claim 1 ,
wherein the cutting device is a half cutter in which the blade edge of the cutting blade and the support base are spaced apart in a state where the cutting blade is arranged at the cutting position, the half cutter being configured to cut the tape arranged between the cutting blade and the support base partially in a thickness direction of the tape in the state where the cutting blade is arranged at the cutting position.

15. The cutting device according to claim 1 ,
wherein the cutting device is a full cutter in which the blade edge of the cutting blade is in contact with the support base in a state where the cutting blade is arranged at the cutting position, the full cutter being configured to cut the tape arranged between the cutting blade and the support base entirely in a thickness direction of the tape in the state where the cutting blade is arranged at the cutting position.

16. A printer comprising:
the cutting device according to claim 1 ;
a printing unit configured to perform printing on the tape; and
a conveying unit configured to convey the tape printed by the printing unit,
wherein the cutting blade and the support base are arranged to face each other with the tape conveyed by the conveying unit being interposed thereb

Assignees

• Brother Ind Ltd

Inventors

• Mizutani Hiromitsu

Classifications

• B41J3/4075

  Tape printers; Label printers · CPC title

• B26D2001/0066

  having shearing means, e.g. shearing blades, abutting blades · CPC title

• B26D1/305

  for thin material, e.g. for sheets, strips or the like · CPC title

• B26D1/025

  for thin material, e.g. for sheets, strips or the like · CPC title

• B41J11/703 Primary

  Cutting of tape · CPC title