JPH1052955A - Cutter mechanism in ink-jet printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move a cutter up and down by a simple mechanism without using an actuator exclusive for the cutter. SOLUTION: A fuser roller 44 supported in a rotatable state to a carriage 24 is pressed into touch with a fixing face 28 of a rail body 26 from above a printed paper 30, whereby a printed face of the paper 30 is fixed. Side plates are arranged at both ends of a movement route of the carriage 24 along a guide rail 22. The carriage 24 supports a cutter 52 so that the cutter can freely move up and down. Moreover, a cutter cam 56 is set to the carriage 24 in a manner to freely move in two directions. When the cutter cam 56 moves in one direction, the cutter 52 is moved by a guide part of the cutter cam 56 to a position where the cutter can cut the paper. When the cutter cam 56 moves in the other direction, the cutter 52 is moved by the guide part of the cutter cam 56 to a position retreated form the paper 30. The cutter cam 56 moves in two directions when colliding against the two side plates subsequent to the movement of the carriage 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a cutter mechanism in a printer.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 5-229204 discloses an ink jet printer that ejects ink from an ink jet head toward a print medium and forms an image on the print medium. Also, JP-A-6-328897
Japanese Patent Application Laid-Open Publication No. H11-157, discloses a cutter mechanism of an automatic drafting machine that cuts an area on a roll paper where printing has been performed by a cutter provided on an image head via a lifting drive mechanism.

[0003]

In an ink-jet printer, when printing is performed in a predetermined range on a long sheet of paper, after a predetermined range is printed, a cutter mechanism is provided to separate the printed portion from a continuous unprinted portion. Must be provided. Usually, this type of cutter mechanism requires a dedicated actuator for vertically moving the cutter, and has a problem that the mechanism is complicated. An object of the present invention is to solve the above problems.

[0004]

In order to achieve the above object, the present invention moves a carriage (24) in a reciprocating direction along a guide rail (22).
The fuser roller (44) supported on the paper is pressed against the fixing surface (28) of the rail body (26) from above the printed paper (30) to fix the printing surface of the paper (30). In the printer, side plates (32) and (34) are disposed at both ends of the movement path of the carriage (24) along the guide rail (22), and the cutter (52) is supported on the carriage (24) so as to be able to move up and down. A cutter cam (56) is provided on the carriage (24) so as to be movable in two directions, and when the cutter cam (56) moves in one direction, the cutter (52) is guided by a guide portion (58) of the cutter cam (56). When the cutter cam (56) moves to a position where the sheet can be cut and the cutter cam (56) moves in the other direction, the cutter cam (5) moves.
The guide (58) of (6) moves the cutter (52) to a position where the cutter (52) is pulled from the paper (30), and moves the cutter cam (56) by moving the carriage (24). 32) and (34) so as to be able to move in two directions.

[0005]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. An inkjet printer 2 includes a platen drum 4 and an inkjet print head 6. 8,10,1
2 is a paper pressing roller, 14 is a driving roller, 16, 18,
20 is a paper guide. 22 is a guide rail,
It is arranged across the paper transport path behind the printing unit. A carriage 24 is movably attached to the guide rail 22. The carriage 24 is connected to a drive motor controlled by a controller, and is configured to be driven in a reciprocating direction along the guide rail 22 by driving the motor.

Reference numeral 26 denotes a rail body disposed above and parallel to the guide rail 22, and has a fixing surface 28 extending in the direction perpendicular to the paper of FIG. On the rail body 26, a guide 20 for guiding a long paper 30 such as roll paper after printing to a fixing surface 28 is fixedly provided. The carriage 24 is formed of a U-shaped metal plate member, and side plates 32 and 34 are disposed on a reciprocating end side along the guide rail 22. L-shaped grooves 36 are formed on both side walls of the carriage 24, and a support shaft 40 of an oil roller 38 is supported in these grooves. A support shaft 46 of a fuser roller 44 (fixing roller) is slidably supported in a vertical groove 42 formed on both side walls of the carriage 24.

The support shaft 46 is urged upward by a spring 48, and the urging force causes the fuser roller 44 to move upward.
Are in elastic contact with the fixing surface 28 of the rail body 26. The oil roller 38 is in contact with the surface of the fuser roller 44, and the oil roller 38 is configured to rotate with the rotation of the fuser roller 44. Numerals 50 are longitudinal grooves formed on both side walls of the carriage 24, and the support shaft 54 of the cutter 52 is slidably fitted in these longitudinal grooves in a state where the rotation is prevented.

Reference numeral 56 denotes a U which is slidably disposed in the carriage 24 in the left-right direction in FIG. 2 via a slide guide mechanism (not shown) with respect to the carriage 24.
This is a cutter cam made of a letter-shaped metal plate, and a cutter elevating guide portion 58 made of a groove is formed on both side walls of the cutter cam. The guide portion 58 includes an upper horizontal portion 58a that holds the cutter 52 at the raised position, a lower horizontal portion 58b that holds the cutter 52 at the lowered position, and an inclined portion that connects the horizontal portions 58a and 58b. ing.

Next, the operation of the present embodiment will be described. The long paper 30 such as roll paper is used for the platen drum 4
In the state in which the print head 6 is wound in FIG. 1, the printing is performed by the scanning motion in the direction perpendicular to the paper surface in FIG. 1. The printed portion of the long paper 30 is rotated by the rotation of the platen drum 4 and the driving roller 14. The paper is sequentially fed to the fixing surface 28 of the rail body 26 along the paper guides 16 and 18. When the printing portion of the long sheet 30 is conveyed to the fixing surface 28, the carriage 24 is reciprocated along the guide rail 22 under the control of the controller, and the ink in the printing portion is crushed by the fuser roller 44, and the fixing is performed. Is performed.

When cutting the paper 30, the carriage 24 moves to the end of the guide rail 22 under the control of the controller, and the carriage 24 is moved to the side plate 32 as shown in FIG.
Collide with As a result, the cutter cam 56 that has protruded rightward with respect to the carriage 24 relatively moves leftward with respect to the carriage 24, and the support shaft 54 of the cutter 52 is guided by the cutter elevating guide portion 58, and The cutter 52 protrudes above the fixing surface 28. That is, the sheet can be cut.

Next, the carriage 24 moves to the left in FIG. 2, and the long paper 30 is cut by the cutter 52 locked at a position where the paper can be cut by the guide portion 58. When the cutter 52 is retracted from the fixing surface 28, the carriage 24 collides with the side plate 34 as shown in FIG. 3, and the cutter cam 56 is moved relative to the carriage 24 rightward in FIG. . Thereby, the spindle 5 of the cutter 52
4 is guided by the cutter elevating guide 58 and descends along the vertical groove 50, and the cutter 52 is retracted from the fixing surface 28 by a predetermined distance.

[0012]

As described above, since the present invention does not use an actuator for moving the cutter up and down, there is an effect that the cutter mechanism can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an ink jet printer.

FIG. 2 is a side view of the carriage.

FIG. 3 is a side view of the carriage.

[Explanation of symbols]

 2 Inkjet printer 4 Platen drum 5 Print head 8 Paper press roller 10 Paper press roller 12 Paper press roller 14 Drive roller 16 Paper guide 18 Paper guide 20 Paper guide 22 Guide rail 24 Carriage 26 Rail body 28 Fixing surface 30 Paper 32 Side plate 34 Side plate 36 Groove 38 Oil roller 40 Support shaft 42 Vertical groove 44 Fuser roller 46 Support shaft 48 Spring 50 Vertical groove 52 Cutter 54 Support shaft 56 Cutter cam 58 Guide portion 58a Upper horizontal portion

Claims (1)

[Claims] 1. A carriage (24) is moved in a reciprocating direction along a guide rail (22).
The fuser roller (44) supported on the paper is pressed against the fixing surface (28) of the rail body (26) from above the printed paper (30) to fix the printing surface of the paper (30). In the printer, side plates (32) and (34) are disposed at both ends of the movement path of the carriage (24) along the guide rail (22), and the cutter (52) is supported on the carriage (24) so as to be able to move up and down. A cutter cam (56) is provided on the carriage (24) so as to be movable in two directions, and when the cutter cam (56) moves in one direction, the cutter (52) is guided by a guide portion (58) of the cutter cam (56). When the cutter cam (56) moves to a position where the sheet can be cut and the cutter cam (56) moves in the other direction, the cutter cam (5) moves.
The guide (58) of (6) moves the cutter (52) to a position where the cutter (52) is pulled from the paper (30), and moves the cutter cam (56) by moving the carriage (24). 32) A cutter mechanism characterized in that it can move in two directions by colliding with (34).