JP2932037B2 - Paper press structure in paper cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper holding structure in a facsimile apparatus using a roll of paper as recording paper or a paper cutting apparatus for automatically cutting paper attached to a printer.

[0002]

2. Description of the Related Art In general, a paper cutting apparatus of this type pulls out paper from a paper wound in a roll shape, prints the paper at a printing unit, prints one page, and then arranges the paper behind the printing unit. The fixed blade extending in the width direction of the provided paper and the movable blade moving in the width direction of the paper on the fixed blade at the retracted positions on both sides deviated from the width of the normal paper are wound in a roll shape. The paper is cut into pages. In order to smoothly and surely cut the paper by the movable blade, the paper is brought close to the movable blade toward the fixed blade, and a paper holding member that prevents the paper from floating and reliably guides the paper into the movable blade. Are arranged substantially in the same width as the paper, that is, in the width direction of the fixed blade. This paper holding member is
The paper is prevented from floating at the free end, and the other end is attached to the openable and closable cover member so as to be separated from the fixed blade in accordance with the opening and closing of the cover member. The paper pressing member is formed of a flexible member having a certain degree of rigidity, for example, a hard film, in order to move the paper toward the fixed blade.

[0003]

In the paper cutting apparatus having the above-described structure, the power supply OF when a jam occurs or the cutting operation is performed.
If the cover member is opened when the movable blade stops halfway through the fixed blade due to an abnormal operation in F or the like, the paper pressing member comes into contact with the movable blade, and the paper pressing member is formed of a hard film. When the contact is repeated, there is a problem that the paper pressing member and the movable blade may be damaged.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a paper holding structure in a paper cutting device which prevents breakage of a paper holding member and a movable blade. It is in.

[0005]

In order to achieve the above object, a paper holding structure in a paper cutting device according to the present invention is provided in which a paper drawn from a paper wound in a roll shape is moved in the width direction of the paper. A paper cutting device for cutting with an extended fixed blade and a movable blade that moves along the fixed blade, comprising a cover member that can be opened and closed, one end fixed to the cover member side, and the other free end. Pressing the paper against the fixed blade, disposing a flexible paper pressing member having a width substantially equal to that of the fixed blade in the vicinity of the movable blade, and pressing the paper pressing member along the paper drawing direction. The slit is provided.

[0006]

According to the present invention, when the paper pressing member contacts the movable blade, the contact portion and the adjacent portion are divided by the slit, and the rigidity of the contact portion is reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a right sectional view of a facsimile apparatus to which a paper holding structure is applied in a paper cutting apparatus according to the present invention, FIG. 2 is a left sectional view of the same, FIG. 3 is a right sectional view of the same with an upper case opened, and FIG. Is an enlarged side view of the switchgear,
FIG. 5 is an enlarged perspective view of the paper holding plate. In these figures, the housing of the facsimile apparatus generally indicated by reference numeral 1 is composed of a lower case 2 having a paper discharge port 2a provided at the rear and an upper case 3, and the upper case 3 is centered on a shaft 15 described later. As a swingable lower case 3
Open and close the top opening of the. Reference numeral 4 denotes a pair of thin plate-shaped frames fixed to both side surfaces of the lower case 3.

Reference numeral 5 denotes an operation as a disengagement member which is supported on the right side of the lower case 2 in a substantially horizontal direction, ie, reciprocally in the AB direction, and has a movement behavior in the A direction by a spring (not shown). As shown in detail in FIG. 4, the engaging projection 6 is formed in the center of the rear surface. The engagement convex portion 6 is formed with an inclined portion 6a which is inclined upward in the direction A from substantially the center. 7
a is a pin implanted in the right frame 4. Reference numeral 8 denotes a roll paper storage portion fixed to both frames 4 and formed in a semi-cylindrical shape. The roll paper storage portion 8 stores the paper 9 wound in a roll shape, and has a guide portion 8a formed to project in the drawing direction D of the paper 9. Have been.

Reference numeral 10 denotes a platen roller rotatably supported by the frames 4, reference numeral 11 denotes a fixed blade stretched and fixed between the frames 4, and reference numeral 12 denotes a slide between the front and the back of the paper on the fixed blade 11. It is a movable blade that reciprocates freely. A pair of hinge plates 14 each having a substantially inverted L-shape and disposed on both side surfaces of the lower case 2 are shafts 15 having a substantially rectangular cross section.
Are supported by the two frames 4 so as to be swingable. The upper case 3 is attached to the horizontal arm portion 14a of the hinge plate 14, and the opening and closing operation of the upper case 3 is performed by a swing operation about the shaft 15 of the hinge plate 14. The bracket 16 is attached to the horizontal arm 14a.
A thermal head 17 that is pressed into contact with the platen roller 10 through the plate is mounted.

A bracket 18 having a substantially inverted U-shaped cross section is fixed to the bracket 16.
Paper press plate 19 formed of a thin transparent hard film
Is fixed at one end, and the free end, which is the other end of the paper holding plate 19, is located close to the upper surface of the fixed blade 11 and near the movable blade 12. This paper pressing plate 19 has flexibility,
As shown in detail in FIG. 1, the whole is a long rectangular piece, and the total length L is formed smaller than the total length of the fixed blade 11 by about two movable blades 12. That is, the movable blade 12
Are positioned at both ends of the fixed blade 11 and are in a standby state. The paper holding plate 19 is formed to have a length L that does not contact the movable blade 12 even when an upper case 3 described later is opened.

A plurality of slits 19a are provided in the paper holding plate 19 at regular intervals along the paper drawing direction D, and the paper holding plate 19 is formed in a strip shape. Reference numeral 20 denotes a guide plate fixed to the upper case 3 for guiding a document for transmission. 21 is a lock lever,
Shaft 2 rotatably supported by guide plate 20
2 is fixed and supported swingably about the shaft 22 and urged counterclockwise by a spring 23. The end of the counterclockwise swing is regulated by a stopper (not shown), and Is held in the right side of the upper case 3, that is, close to the operation member 5.

The lower end of the lock lever 21 is formed with a hook 21a for engaging with the pin 7a, and the left side is integrally formed with an engaging piece 21b disposed at a position for engaging with the engaging projection 6. The lower end of the engagement piece 21b is formed with an inclined portion 21c inclined in the B direction. Reference numeral 24 denotes a slide guide which is slidable between the front side and the back side of the paper on the upper case 3, and a guide portion 24a facing the guide portion 8a is formed at the tip. Upper case 3
A lock lever 2 is also fixed to the inside of the left side surface of the lock lever 2 and is swingably supported about the shaft 22.
2 is provided, a swinging behavior is imparted clockwise in FIG. 2 by a spring 26, and a clockwise swinging end is regulated by a stopper (not shown) to maintain a hanging posture, and a pin 7b is provided. Is provided with a hook portion 25a that engages with the hook.

The lock lever 25 has a hook 25
The detection protruding piece 25b is integrally formed near the position a. 2
Reference numeral 7 denotes a detection sensor fixed to the frame 4 via a bracket 28. The detection sensor 7 has a light-emitting element and a light-receiving element arranged on the front and rear sides of the drawing so as to face the recess. A conventionally known detection unit 27a formed of a sensor is provided, and the light from the light emitting element is blocked or opened by the detection protrusion 25b moving back and forth in the recess. The detection projection 25b is configured to enter the recess when the hook 25a is engaged with the pin 7b.

Next, the operation of the facsimile apparatus having such a configuration will be described. First, when the upper case 3 closes the lower case 2, the hooks 21a and 25a of the lock levers 21 and 25 engage the pins 7a and 7b, respectively.
The lower case 2 cannot be opened. Rolled paper 9 stored in roll paper storage unit 8
The paper 9a drawn out of the printer passes between the guide portions 8a and 24a, is sandwiched between the thermal head 17 and the platen roller 10, and is printed by the thermal head 17. The printed paper 9a passes through the paper holding plate 19 so as to approach the upper surface of the fixed blade 11, and is discharged from the discharge port 2a. When one page is printed on the paper 9a, the movable blade 12 is moved to the fixed blade 1 by a signal from a control unit (not shown) of the apparatus.
Move along 1 At this time, the paper 9a is passed by the paper presser plate 19 so as to approach the upper surface of the fixed blade 11, so that the movable blade 12 cuts the paper 9a smoothly and reliably without dancing.

Next, when replacing the rolled paper 9 or when opening the upper case 3 from the lower case 2 due to the occurrence of paper jam of the paper 9a, as shown in FIG. Is moved in the direction of arrow B to the position indicated by the two-dot chain line. By this movement, the engaging projection 6 engages with the engaging piece 21b, and swings the lock lever 21 clockwise around the shaft 22 against the spring 23, so that the hook 21a is connected to the pin 7a. Is disengaged. At the same time, the other lock lever 25 swings counterclockwise in FIG. 2 against the spring 26 via the shaft 22 so that the hook 25a is disengaged from the pin 7b, and the upper case 3 is disengaged. The upper case 3 can be opened from the lower case 2 as shown in FIG.

At this time, in the normal state, the movable blade 12
Is in a standby position where the movable blade 12 is not in contact with the paper presser plate 19 located at both ends of the fixed blade 11, but the movable blade 12 stops in the middle of the fixed blade 11 due to occurrence of a jam or an abnormal operation such as turning off the power during the cutting operation. Then, when the upper case 3 is opened, the paper pressing plate 19 comes into contact with the movable blade 12. However, since the paper pressing plate 19 is divided into strips by the slits 19a, as shown in FIG. 5, only the portion of the paper pressing plate 19 that abuts on the movable blade 12 is bent, and the abutting portion Since the rigidity is weakened by the slits 19a, breakage is prevented, and a large load is also prevented from being applied to the movable blade 12, so that breakage of the movable blade 12 is also prevented.

Next, when the opened upper case 3 is to be lowered in the direction C and closed, the operation member 5 is erroneously disengaged at the end position, that is, at the position shown by the dashed line in FIG. Even if it does, the inclined portion 21c of the engagement piece 21b first
Is engaged with the inclined portion 6a of the engagement convex portion 6, so that the engagement piece 2
1b is located on the right side of the engagement projection 6, and does not restrict the movement of the engagement projection 6 in the direction A. The operating member 5 is engaged in the direction A, that is, from the engagement release end position. It is returned to the initial position. This prevents the operation member 5 from being locked at the disengagement end position and preventing the upper case 3 from being opened.

When the hook 21a of the lock lever 21 engages with the pin 7a and the upper case 3 closes the lower case 2 as shown by a two-dot chain line in FIG.
The hook 25a of the other lock lever 25 also engages with the pin 7b. At this time, since the detection projection 25b enters the recess of the detection portion 27a, the light-emitting element and the light-receiving element (not shown) are cut off, and the upper case 3 is moved to the lower case 2.
Is detected, the facsimile device 1 is set in an operable state.

At this time, the hook portion 2 engaged with the pin 7b
The detection protrusion 25 is attached to the lock lever 25 which is the same
b, the positional relationship between the detection protrusion 25b and the hook portion 25a does not shift due to an assembly error, and at the same time, the detection protrusion 25b is formed integrally and close to the lock lever 25. The positional relationship between the detection projection 25b and the hook 25a does not shift due to a manufacturing error. Therefore, the positional relationship between the hook 25a and the detection projection 25b is always accurately maintained, and the error caused by the detection projection 25b is always maintained. Detection is prevented, and the inconvenience that the facsimile machine 1 is operated in the state where the upper case 3 is opened as in the related art is prevented.

[0020]

As described above, according to the present invention, a paper drawn from a paper wound in a roll shape is provided with a fixed blade extending in the width direction of the paper and a movable blade moving along the fixed blade. A paper cutting device for cutting with a blade, comprising an openable and closable cover member, one end of which is fixed to the cover member side, and the paper is pressed against the fixed blade at the other free end, and has substantially the same width as the fixed blade. In addition to disposing a flexible paper holding member formed in the vicinity of the movable blade and providing a slit in the paper holding member along the paper drawing direction, the occurrence of a jam or a cutting operation at the time of a cutting operation is performed. When the movable blade stops in the middle of the fixed blade due to an abnormal operation such as when the power is turned off, and the cover member is opened at this time, the paper pressing member comes into contact with the movable blade, but the contact portion is divided into the adjacent portion by the slit. , The rigidity of the Therefore, it is possible to prevent breakage of the movable blade and the paper pressing member by the contact portion.

[Brief description of the drawings]

FIG. 1 is a right sectional view of a facsimile apparatus to which a paper holding structure is applied in a paper cutting apparatus according to the present invention.

FIG. 2 is a left sectional view of a facsimile apparatus to which a paper holding structure is applied in the paper cutting apparatus according to the present invention.

FIG. 3 is a right sectional view showing a state in which an upper case is opened in a facsimile apparatus to which a paper holding structure is applied in the paper cutting apparatus according to the present invention.

FIGS. 4A and 4B are enlarged side views of an opening / closing device in a facsimile apparatus to which a paper holding structure in the paper cutting device according to the present invention is applied, wherein FIG. 4A shows an operation of opening the opening / closing member, and FIG. Is shown.

FIG. 5 is an overall perspective view of a paper press structure according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Facsimile machine, 2 ... Lower case, 3 ... Upper case, 5 ... Operation member, 9 ... Paper rolled up, 11 ... Fixed blade, 12 ... Movable blade, 19 ... Paper holding plate,
19a ... Slit.

Claims (1)

(57) [Claims] 1. A paper cutting device for cutting a paper drawn from a paper wound in a roll shape by a fixed blade extending in a width direction of the paper and a movable blade moving along the fixed blade. A flexible paper having a cover member which can be opened and closed, one end of which is fixed to the cover member side and the width of which is substantially the same as the width of a fixed blade which presses the paper to the fixed blade side at the other free end. A paper press structure in a paper cutting device, wherein a press member is disposed close to a movable blade, and a slit is provided in the paper press member along a paper drawing direction.