JPH0731994Y2 - Equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a facsimile machine, and more particularly to improvement of a cutter for receiving recording paper.

[Prior Art] In a general office facsimile machine that transmits and receives documents, image information, etc. using a telephone network, when a transmission signal from a partner device is received, the roll paper set inside the device is stepped. It is configured so that it is fed out by a platen roller which is rotationally driven by a motor, recorded by a print head, and when recording of one screen is completed, it is cut by a cutter and discharged from the discharge port to the outside of the apparatus as received recording paper. An insertion roller for inserting the roll paper into the cutter and a discharge roller for guiding and discharging the roll paper from the cutter to the discharge port are arranged before and after the cutter. The reason for providing the insertion roll is that without the insertion roller, the leading edge of the roll paper printed by the print head may be curled up and not inserted into the cutter at the specified position, preventing paper jams. This is because Similarly, the discharge roller is also for preventing the leading edge of the recording paper from being rolled up between the cutter and the discharge port to cause a paper jam.

[Problems to be Solved by the Invention] However, such a conventional facsimile apparatus requires an insertion roller and a discharge roller, and therefore requires a drive source, a rotation transmission mechanism, and the like for that purpose, and Not only the number of man-hours for assembling work increases, but also a space for the automatic cutter is required when the automatic cutter is provided, which is a big obstacle to downsizing of the apparatus itself.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to eliminate the insertion roller and the discharge roller with a simple structure, reduce the number of parts and the number of assembly steps, and reduce the size. An object of the present invention is to provide a facsimile machine designed to be realized.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has an upper blade and a lower blade that face each other vertically with a roll paper interposed therebetween, and drives when the reception of one screen is completed. An auto-cutter equipped with a drive source that moves the blades or one of them closer to each other, and a guide plate that guides the roll paper can be selectively attached to and detached from the gate between the platen roller and the receiving recording paper discharge port. And a blade is formed on at least one of the upper and lower edges of the receiving recording paper discharge port.

[Operation] In the present invention, when the auto cutter is not used, the guide plate is arranged between the platen roller and the receiving recording paper discharge port, and the recording paper coming out from the receiving recording paper discharge port is the receiving recording paper discharge port. It is cut by being pressed against the blades provided at the upper and lower edges or one of them. When using the auto cutter device, the auto cutter is placed between the platen roller and the receiving recording paper discharge port instead of the guide plate, and when one screen of received recording is completed, the drive source drives to drive the upper and lower blades. Alternatively, one of the tampered persons is moved in a direction in which they approach each other relatively to cut the roll paper.

[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 is a sectional view of a receiving portion of a facsimile apparatus in which an auto cutter according to the present invention is incorporated, FIG. 2 is a sectional view of a receiving portion in which a guide plate is attached instead of the automatic cutter, and FIG. FIG. 4 is a plan view showing an assembled state of the auto cutter, FIG. 4 is a rear view of the same cutter, FIG. 5 is a sectional view taken along line VV of FIG. 3, and FIG. 6 is a partially cutaway perspective view of a protective cover. FIG. 7 is a perspective view of an essential part of the automatic cutter. In these drawings, reference numeral 1 denotes a casing of a facsimile apparatus. The casing 1 is divided into upper and lower parts, and the lower case 2 and the upper case 3 are joined together by fitting their opening surfaces to each other. It is composed of an openable / closable receiver cover 4 that covers the opening of the upper half of the upper surface, a detachable transmitter cover (not shown) that also covers the opening of the lower half of the lower case 2. The upper case 3 is formed in a U shape in a plan view, and a handset 9 is installed on the upper surface of one side.

The inside of the casing 1 has a front half part as a receiving part 5 and a rear half part as a transmitting part 6, and a slit-shaped reception for ejecting recorded roll paper (reception recording paper) 7 on the front part 2A of the lower case 2. A recording paper discharge port (hereinafter referred to as a discharge port) 8 is provided. The upper opening edge of the discharge port 8 is formed in an edge shape to form a blade 8A, and an auto cutter 17 to be described later is formed.
When not used, it is used as a cutter for the roll paper 7.

In this case, the blade may be formed not only on the upper opening edge but also on the lower opening edge, or may be formed by both methods.

A frame-shaped roll paper storage unit 10 for storing the roll paper main body 7A of the roll paper 7 is formed integrally with the lower case 2 in the reception unit 5, and the roll paper storage unit 10 and the discharge port 8 are connected to each other. A drive motor (not shown) is provided between them, and the arrow A in FIG.
The roll paper 7 is rotated in the direction
To detect the presence or absence of the roll paper 7 and the print head 13 that presses the platen roller 12 obliquely from above through the roll paper 7 A roll paper detection sensor 16 and an automatic cutter 17 that cuts the roll paper 7 when one screen has been received are provided.

The print head 13 is composed of a thermal head to form a floating head, and is attached to the lower surface of the front end of a bracket member 18, and the bracket member 18 has a base end widthwise central portion inclined forward and downward to a connecting member 19. It is pivotally supported by a first shaft 20 that can swing in the left-right direction. Further, a bearing portion having U-shaped grooves 21 into which the shaft ends of the platen rollers 12 are fitted on the front end surfaces on both side edges of the front end of the bracket member 18.
22 are integrally provided. Then, the bracket member 18 is urged upward by the compression coil spring 23 to move the print head 13 to the platen roller.
It is pressed against the upper peripheral surface of 12 with a predetermined pressure. One end of the compression coil spring 23 is pressed against a mounting plate 24 arranged on the lower surface of the receiver cover 4.

The connecting member 19 has a horizontal second shaft 25 that is orthogonal to the first shaft 20, and the second shaft 25 is the second shaft 25.
A long hole 27 of a bracket 26 integrally provided on the back surface of the first shaft 20 rotatably supports the first shaft 20 so as to be movable in the axial direction and rotatable in the vertical direction.

The protective cover 15 is formed into a shape as shown in FIG. 6 by bending a metal plate such as stainless steel, the upper end of which is screwed and fixed to the lower surface of the mounting plate 24, and the curl habit of the roll paper 7 is attached to the lower end side. To remove the first V-shaped,
The second handling parts 31, 31 are provided so as to be displaced in the transport direction of the roll paper 7. The first handling unit 30 is the roll paper storage unit 10
The second handling part 31 is located between the front wall 33 and the platen roller 12 and closely faces the upper surface of the front wall 33 of the roll paper main body 7A and the platen roller 7 when the receiving part cover 4 is closed. The roll paper 7 between the rollers 12 is pressed downward by both the handling parts 30 and 31. Therefore, the platen roller 12
When the roll paper 7 moves along with the rotation, the roll paper 7 can be handled by the first and second handling units 30 and 31, and the curl habit can be removed.

An opening portion 36 through which the connecting member 19 is inserted is provided at the center of the protective cover 15. Further, the gap between the first and second handling portions 30 and 31 and the upper surface of the front wall 33 of the roll paper storage portion 10 forms a transport passage for the roll paper 7.

The roll paper detection sensor 16 is a reflection type photo sensor, is inserted and arranged in an insertion hole 37 formed in the upper surface of the front wall 33, and the light emitted from the light emitting element hits the roll paper 7 and is reflected. The light receiving element receives the light to detect the roll paper 7. Corresponding to the sensor 16, the first handle 30 of the protective cover 15 has a black reflection that prevents light from the light emitting element from hitting the first handle 30 and being reflected when the roller paper 7 is not present. A prevention part 38 (Fig. 6) is provided.

The auto cutter 17 has a discharge port 8 and a platen roller 12
A cutter case 41 fixed between the lower case 2 and the lower case 2 by a set screw 40 (FIG. 3), and an upper blade 42 and a lower blade 43 arranged in the cutter case 41,
It comprises a drive motor 44 and a transmission mechanism 45 (FIG. 7) for converting the rotation of the drive motor 44 into the vertical movement of the upper blade 42.

The cutter case 41 has a slope 46 and a step 47 on the rear half of the upper surface.
It is formed in a deformed box shape (see FIG. 5) and has a slit-like inlet portion 48 at the intersection of the slope 46 and the step portion 47, and the outlet 8 at the lower front corner. Then, the outlet portions 49 are respectively formed. A plate 51 having a bent portion 50 whose lower end is bent obliquely upward is fixed to the slope 46 by a set screw 52. The roll paper 7 printed by the print head 13 is inserted between the stepped portion 47 and the bent portion 50 and enters the cutter case 41 through the inlet portion 48, and the space between the upper blade 42 and the lower blade 43 is set. Through the outlet 49 and the outlet 8
Is blown from the outside.

The upper blade 42 has an inverted V-shaped side surface, a blade portion 42A is formed at a bent portion thereof, and a lower end portion thereof is supported by a support shaft 55 so as to be vertically rotatable. The blade 42A is formed obliquely so as to be inclined at an appropriate angle with respect to the horizontal line, so that one end side (right side in FIG. 4) is lower than the other end side. The support shaft 55 is horizontally installed between the left and right side plates of the cutter case 41. As shown in FIG. 7, a crank 56 is integrally provided at one end of the upper blade 42, and a slide groove 57 which is long in the front-rear direction is formed at the tip of the crank 56.

As shown in FIG. 5, the lower blade 43 has a side surface formed in an inverted V shape similar to the upper blade 42, and the front end edge of the upper end surface is in sliding contact with the blade 42A of the upper blade 42. 43A is formed, the lower end is the shaft
It is rotatably supported in the front-rear direction by 59. The lower blade 43 is a torsion coil spring attached to the shaft 59.
A counterclockwise turning habit is imparted by 60 (FIG. 4), so that it is normally pressed against one end of the blade 42A of the upper blade 42 at one end side. The shaft 59 is axially supported by the cutter case 41.

The drive motor 44 is fixed to a bracket 62 (FIG. 3) attached to one side of the cutter case 41 with its axis oriented in the front-rear direction, and its output shaft 63 is provided with a worm 64. The worm 64 is attached to the bracket 62.
A worm wheel 65 that meshes with is rotatably arranged,
The slide groove 57 of the crank 56 is provided near the outer periphery on one side.
A guide pin 67 (see FIG. 7) slidably inserted into and engaged with is provided so as to project, and these form the transmission mechanism 45. A D-shaped cam 68 (see FIG. 7) is integrally provided on the center of the other side surface of the worm wheel 65. Then, a switch 69 (8th
(Shown) is arranged corresponding to the cam 68.

The auto-cutter 17 configured in this way is unitized and incorporated into the lower case 2, but if not required, it can be removed by removing the set screw 40 (Fig. 3), and instead, the A guide plate 70 shown in FIG. 2 is arranged between the discharge port 8 and the platen roller 12.

In the facsimile apparatus having such a configuration, when the auto cutter 17 is mounted, the leading end of the roll paper 7 passes through the front wall 33 and the platen roller 12 and is inserted into the cutter case 41. In this state, when the receiving section cover 4 is closed, the print head 13 is pressed against the platen roller 12 via the roll paper 7, and the first and second handling sections 30 and 31 closely face the upper surface of the front wall 33. Roll paper body
Press in the roll paper 7 between 7A and the platen roller 12. When printing is started by the print head 13 upon reception, the platen roller 12 rotates to send out the roll paper 7, and the auto-cutter 17 operates and cuts each time reception of one screen ends and discharges from the discharge port 8. .

When the roll paper 7 is fed with the rotation of the platen roller 12, the first and second handling portions 30 and 31 of the protective cover 15 handle the roll paper 7 and remove the curl habit. Therefore, the tip of the roll 7 does not curl and the outlet of the cutter case 41
It is discharged from the discharge port 8 through 49.

The cutting operation of the roll paper 7 by the auto cutter 17 will be described in detail with reference to FIGS. 8 to 10. FIGS. 8 (a) and 8 (b) show a standby state. At this time, the upper blade 42 and the lower blade 43 Only overlap each other at one side edge and allow the roll paper 7 to pass through. Further, the guide pin 67 is located at the uppermost position, and the crank 56 is inclined forward and downward. The switch 69 closely faces the flat portion of the cam 68 and holds the open state.
When the reception of one screen is completed in this state, the drive motor 44 is driven by a signal from the control unit, and its output shaft 63
Is transmitted to the worm wheel 65 via the worm 64, causing it to rotate clockwise. Then, the guide pin 67 descends as the worm wheel 65 rotates,
The crank 56 is lowered and the upper blade 42 is pivoted as shown in FIG.
It rotates clockwise around 55 and descends to gradually narrow the gap with the lower blade 43 (Fig. 9 (a)). Therefore, the upper blade 42
The roll paper 7 inserted between the lower blade 43 and the lower blade 43 is gradually cut from one end side.

When the worm wheel 65 rotates in response to the drive of the drive motor 44 and the cutting is started, the movable contact of the switch 69 rides on the cam 68 and comes into contact with the fixed contact to close the switch 69 (Fig. 9 (b). )). When the worm wheel 65 rotates about half a turn, the guide pin 67 reaches the lowermost position and the upper blade 42 and the lower blade 43
The cutting of the roll paper 7 by (1) is completed (FIG. 10 (a)), and by returning to the uppermost position by the subsequent half rotation, the upper blade 42 is rotated upward to return to the initial position. When the upper blade 42 turns back, the switch 69 opens and the drive motor is driven based on the signal.
Stop 44.

The present invention is not limited to the above embodiment,
Various changes are possible, for example, the rotation of the drive motor 44
Although the pin 67 and the guide groove 57 are used as the transmission mechanism 45 for converting into the vertical movement of the 42, a link, a cam or the like may be used, and both the upper blade 42 and the lower blade 43 move vertically when cutting. Alternatively, only the lower blade 43 may be operated.

[Advantages of the Invention] As described above, in the facsimile apparatus according to the present invention, the automatic cutter is arranged between the receiving document discharge port and the platen roller instead of the insertion and discharge rollers. A discharge roller is not required, the structure can be simplified, the distance from the discharge port to the head print line can be shortened, and the apparatus can be downsized. Further, without the insertion and ejection rollers, the bearings, the gear train for transmitting the rotation, etc. are not required, the torque of the motor can be small, the motor can be downsized, and the power consumption can be reduced.
Further, when the auto cutter is not attached and used, a guide plate may be provided instead of the auto cutter, and the roll paper may be cut by a blade provided at the opening edge of the discharge port, which allows the auto cutter to be optional.

[Brief description of drawings]

FIG. 1 is a sectional view of a receiving portion of a facsimile apparatus in which an auto cutter according to the present invention is incorporated, FIG. 2 is a sectional view of a receiving portion in which a guide plate is attached instead of the automatic cutter, and FIG. FIG. 4 is a plan view showing an assembled state of the auto cutter, FIG. 4 is a rear view of the cutter, FIG. 5 is a sectional view taken along line VV of FIG. 3, and FIG. 6 is a partially cutaway perspective view of the protective cover. FIG. 7 is a perspective view of an essential part of the auto cutter, and FIGS. 8 (a), (b) to 10 (a), (b) are views for explaining the cutting operation of the auto cutter. 1 ... Device housing, 2 ... Lower case, 3 ... Upper case, 4 ... Receiver cover, 5 ... Receiver, 7 ... Roll paper, 7A ... Roll paper body, 8 ... Received record Paper outlet, 8A ... Blade, 10 ... Roll paper storage, 12 ... Platen roller, 13 ... Print head, 15 ... Protective cover, 17 ...
Auto cutter, 42 ... upper blade, 42A ... blade, 43 ... lower blade, 43A ... blade, 44 ... driving motor, 70 ... guide plate.

Claims (1)

[Scope of utility model registration request] 1. An upper blade and a lower blade, which face each other vertically with a roll paper interposed therebetween, and a drive for driving the upper blade and / or the lower blade to move toward each other when one screen is received. And a guide plate for guiding the roll paper are selectively and detachably provided inside the apparatus housing between the platen roller and the receiving recording paper discharge port. A facsimile machine having a blade formed on at least one of the upper and lower edges of the exit.