JPS6317756A - Roll paper take-up roller - Google Patents

Abstract

PURPOSE:To make roll paper windable accurately and automatically without any wastage, by installing a winding core fitted with a slit and an engaged mechanism, the specified guide member and a positioning device all in a roll paper take-up roller for photographic paper or the like. CONSTITUTION:A take-up roller 6 consists of a winding core 7, a guide member 23 and a positioning device 37. The winding core 7 is formed into almost cylindrical form, rotated and driven by a driving mechanism, and it is provided with a slit 19 introducing a tip part (f) of roll paper F and an engaged mechanism 20 being built in as corresponding to this slit 19 and engaging the tip part (f) of the roll paper F. The guide member 23 guides the tip part (f) of the roll paper F having been conveyed to the winding core 7 at the initial position, while it is displaceable from the initial position. The positioning device 37 is one that situates the slit 19 of the winding core 7 in the position opposed to a discharge port 28 of the guide member 23 existing in the initial position, and its consists of the disc fixed to one end of the winding core 7, the opening installed in this disc and a photoswitch.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a roll paper winding device. That is, it is used in various devices such as an image forming apparatus and automatically winds a long sheet-shaped roll paper such as a film, tape, photographic paper, etc., which has been conveyed, onto a winding core via a guide member. ,
The present invention relates to a winding device.

"Prior Art" In such a roll paper winding device, winding of the roll paper has conventionally been performed as follows.

First, as shown in the example of Japanese Utility Model Publication No. 51-276, a guide member is provided which guides a film, which is a roll paper, to a winding core and is movable in a swinging manner, and this guide member is separated according to the winding diameter of the film. First, the leading end of the film is pressed against the outer periphery of the winding core, and the film is wound around two times and then locked using a winding device that has an arm member that is displaced as much as possible and has a pressure roller at its end. After that, the film was wound.

Further, as shown in the embodiment of Japanese Patent Publication No. 58-32149, there is provided a guide member which guides the photographic material in the form of roll paper to the winding core and is movable in a swinging manner, and a winding device attached to the tip of the guide member. It circumscribes the photographic paulownia wood that is wound around the core and presses it.

First, the tip of the photographic material is wrapped around the outer circumference of the winding core about two times and locked, and then the photographic material is wound up using a winding device having a flexible belt-like member that tightens the material. was being carried out.

In addition, winding devices similar to these were used to wind up roll paper.

"Problems to be Solved by the Invention" By the way, the following problems have been pointed out in such conventional examples.

First, in both cases, the roll paper is first wound about two times around a winding core, and then the paper is wound up. That is,
In order to wrap and lock the leading end of the roll paper around the take-up core, it is necessary to feed the roll paper twice around the outer circumference of the take-up core in advance, resulting in unused roll paper and a lot of waste. It was a problem.

Second, the leading end of the roll paper is wound around the winding core.

Accidents may occur in which the locking becomes uncertain and subsequent winding is hindered. Thirdly, the structure of the arm member, band member, etc., and the structure for their installation and operation are not precise. It was also pointed out that it was necessary and complex.

Fourthly, there is the problem of damage to the roll paper due to pressing the winding core from the outside, and the pressing force must be strictly uniform in the width direction, so the balance may be disturbed. The winding misalignment occurs when

It has been pointed out that winding accidents occur, and that a dedicated winding device is required for each width of roll paper.

In the conventional example, the above-mentioned problems have been pointed out.

In view of these circumstances, the present invention has been made to solve the problems of the conventional example, and it is necessary to provide a winding core equipped with a slit and a locking mechanism, a predetermined guide member, and a positioning means. By having this, there is no waste of roll paper, and it is reliable and easy.

Another object of the present invention is to propose a roll paper winding device that can automatically wind up paper without damage and can easily accommodate various widths.

"Means for Solving the Problems" The technical means of the present invention to achieve this objective are as follows.

This roll paper winding device includes the following winding core, guide member, and positioning means.

The winding core has a substantially cylindrical shape and is rotationally driven by a drive gIJ mechanism, and has a slit into which the leading edge of the rolled paper is introduced, and a locking mechanism built in corresponding to the slit to lock the leading edge of the rolled paper. It is equipped with

At the initial position, the guide member guides the leading end of the transported roll paper to the winding core, and is movable from the initial position.

The positioning means positions the slit of the winding core opposite to the discharge port of the kite member in the initial position.

"Function" Since the roll paper winding device according to the present invention is comprised of such means, it functions as follows.

When winding the roll paper, the kite member is in an initial position, and the winding core is positioned by the positioning means so that the slit of the winding core faces the discharge port of the guide member.

The leading end of the roll paper is guided by the guide member, introduced from the discharge port into the slit of the winding core, and reaches the locking mechanism.

After that, the take-up core starts to be rotated by the drive mechanism, and the leading end of the roll paper is locked by the locking mechanism and is automatically and securely wound around the take-up core. It is then wound onto the winding core.

Here, only a small portion of the leading end of the roll paper can be used for locking the roll paper to the winding core, and the unused portion required for locking is small, thereby significantly reducing waste of the roll paper. Furthermore, since a locking mechanism is used, the leading end of the roll paper can be securely locked with two turns to the winding core, and subsequent winding can also be ensured. Furthermore, the structure is simple, and since the roll paper is not pressed against the winding core, damage to the roll paper is prevented, and stable winding is possible regardless of the width of the roll paper.

"Example" The present invention will be described in detail below based on the example shown in the drawings.

First, let's break out the image-forming device.

FIG. 10 is a front sectional view showing an example of an image forming apparatus, and the present roll paper winding apparatus is used in such an image forming apparatus.

Reference numeral 1 denotes the body of the image forming apparatus.The body 1 is equipped with wheels 2.degree.2, and the interior of the body 1 is as follows. Aircraft 1
A box-shaped supply magazine 3 is loaded at one end of the interior, and a core 4 at the center of the supply magazine 3 contains an unused long film and a roll paper F which is a photosensitive material for a photographic paper shade. is rolled up and stored. □A box-shaped pick-up magazine 5 is loaded in another part of the body 1,
A winding core 7 of a roll paper winding device 6 is disposed in the center of the pickup magazine 5, and the roll paper F of the exposure 1 image forming section is wound around this winding core 7 and stored therein.

A transport system 8 is disposed between the supply magazine 3 and the pick-up magazine 5. This conveyance system 8 includes a pair of carry-in rollers 9, 9 in order from the supply magazine 3 side.
'The paired 10th-ra 11.1 forming the sub-scanning section 10
1' and 20th rollers 12, 12', a pair of delivery rollers 13 and 13', a cutter 14, and the like are provided.

Note that the 20th rollers 12 and 12' are drive rollers, and the 10th rollers 11 and 11' are for preventing the roll paper F from lifting up and are driven at all times, except when feeding the roll paper F for the first time. Rotationally driven.

n] The roll paper F conveyed in the constant scanning 10 is sequentially irradiated with laser light B from the laser optical system 15,
exposed to light. That is, the laser beam B scans the image in the width direction of the roll paper F, which is the main scanning direction, in a direction perpendicular to the transport direction, and scans the image in the longitudinal direction of the roll paper F, which is the sub-scanning direction, in the transport direction. This is done by the scanning section 10.

Since the image forming device is configured as described above, it operates as follows.

When the magazine 3 is loaded with a supplyer and its core 4 is rotationally driven, the roll paper F is fed into the conveyance system 8, is conveyed by the conveyance system 8, and the tip of the roll paper F is transferred to the winding core 7 of the pickup magazine 5, which is rotationally driven. It is wound up from part f.

Then, in the sub-scanning section 10, the image is scanned by irradiation with laser light B by the laser optical system 15, and the image is exposed and imprinted on the roll paper F.

Note that the sub-scanning section 10 requires extremely high precision, so the front and rear roll paper F are provided with downwardly curved loops L, L.
is formed so that speed errors, vibrations, etc. in the carry-in roller 9° 9' and the ejection rollers 13, 13' are not transmitted to the sub-scanning section 10.

When a predetermined number of images have been formed, the roll paper F is cut by the cutter 1/1, and only the image forming portion is wound around the winding core 7, which is rotationally driven.

Thereafter, the tick-up magazine 5 is taken out from the image forming apparatus, and the imaged roll paper is processed.

The image forming device is like this.

The roll paper winding device 6 will be explained below.

For example, in such an image forming apparatus, the roll paper winding device 6
is used. FIG. 1 is a perspective view of the embodiment, and FIG. 2, FIG. 3, and FIG. 4 are front sectional views showing its operation.

The roll paper F is made of a long sheet such as film, tape, photographic paper, etc. For example, in the case of photographic paper, the width is 76 cm.
．． Various widths from 2#ffl to 355.6M are used, and in the example shown, the width is 0.20mm. 0.24m from
A material made of a strong material with a diameter of about 300 mm is used.

Next, the winding core 7 will be described. The winding core 7 has a cylindrical shape, and as shown in the front cross-sectional views of FIGS. 5 and 6, the winding core 7 is composed of a cylindrical portion and side plates (not shown) that close both ends of the cylindrical portion. Frame of separate body 1 (see Figure 10) (
(not shown) on a horizontal rotation shaft. The winding core 7 is rotationally driven by a drive mechanism 16, and the illustrated drive mechanism 16 includes a motor M serving as a drive source and a pulley 17. belt 18
It consists of etc. The rotational speed of the motor lvl is constant, and the motor M repeats driving and stopping as appropriate even during winding, so that the amount of the roll paper to be wound onto the winding core 7 is adjusted.

The cylindrical portion of the winding core 7 has a slit 19 along the axial direction.
The slit 19 is set to be slightly longer than the maximum width of the roll paper F to be wound. Also, winding core 7
A locking mechanism 20 is built in corresponding to the slit 19. In the illustrated example, the locking mechanism 20 includes a locking roller 21 and a plate spring 22, as shown in FIGS. 5 and 6.
It consists of The locking roller 21 faces the slit 19 and is rotatably mounted between the side plates of the winding core 7 via a one-way rotation clutch (not shown), for example, so as to be rotatable only in a clockwise direction. A portion of the leaf spring 22 is attached to the inner side near the slit 19 of the winding core 7, and the center portion is biased and pressed against the locking roller 21, and the free end portion is further extended toward the axis. It's being served.

Next, the guide member 23 will be described. This guide member 2
3 has an upper guide plate 24, a lower guide plate 25 disposed opposite to the upper guide temporary 24, and both side plates 26 and 26 connecting the upper guide plate 24 and the lower guide plate 25, A wide opening taro 1 (θλ
An opening 27 and a narrow discharge opening 28 are formed on the winding core 7 side. The upper guide plate 24 and the lower guide plate 25 are arranged to face each other so as to gradually approach each other from the carry-in port 27 toward the discharge port 28. Further, support plate portions 29 and 29 are hung from both ends of the lower guide plate 25, and the end portions of the support plate portions 29 and 29 are fixed to a horizontal rotation shaft 30. It is pivoted on one frame. The rotating shaft 30 is located outside the winding diameter of the roll paper F that is entirely wound around the winding core 7, so that it does not come into contact with the outer periphery of the roll paper F that has been wound up.

Therefore, the guide member 23 is able to swing around the rotating shaft 30, and at all times except when winding the roll paper F.
Due to its own weight, it comes into contact with and is supported by a stopper pin 31 horizontally suspended on the frame of the separate body 1, thereby being positioned at the initial position. Note that the guide member 23 can be displaced from its initial position by various displacement modes such as linear movement, in addition to the swinging shown in the illustrated example. Further, the guide member 23 is configured so that the roll paper F is locked at its leading end f by the locking mechanism 20, and the transport system 8
It is positioned to receive the push-up blade by the roll paper F when it travels to the winding core 7, which is rotationally driven, following a path changed from before winding.

Therefore, the guide member 23 receives such a push-up blade and is driven to swing or otherwise displace from the initial position. In the illustrated example,
Although the guide member 23 contacts the roll paper F due to its own weight and receives the push-up blade, the guide member 2
It is also conceivable that the paper sheet 3 is pressed against the roll paper F by the biasing force of a spring interposed between the paper sheet 3 and the frame, thereby receiving a pressing force in various directions, for example, downward.

32 and 33 are rotatable rollers arranged in several stages along the ends of the upper guide plate 24 and the lower guide plate 25 near the discharge port 28. Further, upstream of the guide member 23, in order from the conveyance system 8 side, a detection switch 34 such as a microswitch for detecting the roll paper F, a fixed guide plate 35 fixed to the frame,
A flexible guide sheet 3 whose one end is attached to the fixed guard plate 35 and interposed between it and the guide member 23
6 are arranged.

Next, regarding the positioning means 37). The positioning means 37 allows the slit 19 of the winding core 7 to face the discharge port 28 of the guide member 23 in the initial position. The positioning means 37 shown in FIG. 1 includes a disc 38 coaxially fixed to one end of the winding core 7, an opening 39 bored at a predetermined position in the disc 38, and a disc 38 fixed to the frame. A light-transmitting type first switch 4 for monitoring the frontage 39
0, and in response to the switching operation of the photoswitch 40, the motor M of the drive mechanism 16 is driven.

It is set to be stopped. That is, when the sulin 19 of the winding core 7 faces the discharge port 28 of the guide member 23 in the initial position, the opening 39 of the disc 38 is positioned in a relationship facing the photoswitch 40, In this case, the light from the light emitting part of the photoswitch 40 is incident on the light receiving part to perform a switching operation, and in response to this, the motor M of the drive mechanism 16 is stopped. In addition, the positioning means 37 is provided with light-reflecting mark points in place of the three openings on the disc 3B, and is monitored by a light-reflecting photo switch instead of the light-transmitting photoswitch 40. Alternatively, a method using a micro switch or a method using various sensors is also possible, and furthermore, the rotation of the winding core 7 can be regulated without depending on the motor M of the drive gate structure 16. method is also possible.

Next, the winding detection means 41 will be described. The winding detection means 41 detects that the guide member 23 receives the push-up blade due to the roll paper F moving towards the winding core 7 following a path changed from that before winding, as described above, and is driven to move from its initial position. By checking the displacement such as rocking, the winding core 7 of the roll paper F is
This is used to detect winding. The winding detection means 41 shown in FIG. 1, FIG. 7, and FIG.
A disc 42 fixed to the rotating shaft 30 of No. 3, and this disc 42
openings 43 and 44 bored at predetermined positions, and a light-transmissive photoswitch 45A that is fixed to the frame and monitors the openings 43 and 44, respectively.

It has B. That is, when the guide member 23 is in the initial position where it contacts the stopper gun 31, the opening 43
is set to the photo switch 45A in a position facing the photo switch 45A, and when the kite member 23 is oscillated or otherwise displaced in a predetermined clockwise direction from its initial position due to the front position, the opening 44 is set in a position facing the photo switch 45A. are positioned in opposing relationship.

Therefore, when the opening 43 faces the photoswitch 45A and the opening 44 faces the photoswitch 45B, the light from the light emitting parts of the respective photoswitches 45A and 45B is directed to the light receiving part and a switching operation is performed. First, when the opening 43 faces the photoswitch 45A, it is confirmed that the guide member 23 is in the initial position and that E preparation for normal winding is completed.
For example, a message to that effect is displayed on the operation panel (not shown) of the image forming device.On the other hand, if the opening 44 faces the photoswitch 45B after winding of the roll paper has started, the guide member 23 It is detected that the roll paper F has been oscillated or otherwise displaced by a predetermined amount from the position, that is, that the leading end f of the roll paper F has been locked in the locking gate mechanism 20 and has been securely wound around the winding core 7,
Based on this detection, the drive of the motor M of the drive mechanism 16 is continued to continue winding the roll paper F onto the winding core 7, and a display to that effect may be displayed on the display panel. If the opening 44 does not face the photoswitch 45B, it is assumed that the leading end f of the roll paper F is not wound around the take-up core 7, and the driving of the motor M of the drive mechanism 16 is stopped.
A message to that effect is displayed on the display panel.

Incidentally, it is of course possible to use a system in which the opening 43 is not provided, and various other systems other than the side shown in the drawings are also possible as the winding detection means 41, which is the same as explained in the above-mentioned positioning means 37. .

The above is an explanation of the configuration of the roll paper winding device 6.

Next, the operation etc. will be explained.

When winding up the roll paper F, as shown in Fig. 2,
First, the positioning means 37 slits the slit 19 of the winding core 7.
is positioned to face the discharge port 28 of the guide member 23.

That is, after it is ensured in advance that the guide member 23 is in the initial position by the opening 43 and the switch 45A, the motor M of the drive mechanism 16 is driven to rotationally drive the winding core 7, and the positioning is performed. The disk 38 of the means 37 is also rotated in conjunction. When the aperture 39 faces the switch 40 that monitors the three apertures, a switching operation is performed, and in response, the motor N4 of the drive mechanism 16 is stopped. In this way, the sleeves 1 to 19 are positioned opposite the outlet 28.

Thereafter, the roll paper F conveyed by the conveyance system 8 is detected by the detection switch 34, and then moved to the temporary fixed guide 35. It passes through the guide sheet 36 and reaches the kite member 23.

Then, the leading end of the roll paper F advances through the guide section 23 from the loading port 27 to the discharge port 28, as shown in FIG.
2, the winding core 7 is
be guided towards the center of

As a result, the tip end f is further fed, introduced into the slit 19 of the winding core 7, and reaches the position before locking @20. In other words, Figure 19
1, it is sandwiched between the locking roller 21 and the spring 22.

Thereafter, as shown in FIGS. 3 and 5, the winding core 7 starts to be rotated counterclockwise by the motor M of the drive mechanism 16 to take up the roll paper. Since the tip end f of F is locked in the locking mechanism 20, the roll paper F is securely wound around the outer periphery of the winding core 7, so that the roll t [F is securely wrapped around the winding core 7] It will be wound up.

Here, the locking roller 21 may rotate only in the clockwise direction, that is, in the clamping direction, and the tip end f of the roll paper is caused by the force exerted by the locking roller 21 and the pressing force of the temporary spring 22. The two are securely locked together, and the center will not come out from the slit 19.In this case, the center of the roll paper F will not come out from the slit 19.
If the υ feed and feed speed are set to be the same as or slightly faster than the winding speed of the winding core 7, the locking state can be more reliably obtained.

The timing at which the small winding core 7 starts rotating for winding, that is, the timing at which the motor 1 of the drive mechanism 16 starts driving for winding, is determined using a delay circuit or the like in the illustrated example. , is set after a predetermined period of time has elapsed after the detection switch 34 detects the passage of the roll paper F. In addition, there is a method in which a detection switch is provided inside the winding core 7 and the motor M is directly driven by detecting that the leading end f of the roll paper is introduced into the winding core 7 (7) (possible). However, the above-mentioned method shown in the drawing uses a tick-up magazine 5 (see FIG. 10) that stores the rolled-up roll paper F1 winding core 7, etc. When taking it out from the storage, it has the advantage that no electrical contacts or the like are required, the structure is simple, and there are few failures.

Now, as mentioned above, the tip of the roll paper F is locked taa.
2o, and is wound around the outer periphery of the winding core 7 which is rotationally driven. The roll paper F with the leading end f wrapped around it is
As shown in FIG. 3, it follows a path different from that of the winding surface between it and the conveyance system 8, and heads toward the winding core 7. That is, the roll paper F is held by the locking mechanism 20. Winding core 7 and fixed guide body 35. Tension is applied to the transport system 8, and the path changes upward in the drawing.

Therefore, the roll paper F is
etc., and gives a push-up blade toward the road. Therefore, the kite member 23 is swung clockwise about the rotation shaft 30 from the above-mentioned initial position.

When the guide member 23 swings, the winding detection means/1
The disk 42 of No. 1 also rotates, and the opening 44 becomes the photoswitch 45.
Located opposite B. By confirming the swinging displacement of the kite member 23 in this way, the leading end f of the roll paper F is
is locked by the locking mechanism 20, and it is detected that the winding core 7 is reliably wound around the winding core 7.

Based on such detection, the drive of the motor M of the drive+iA mechanism 16 is continued, and the winding of the roll paper F onto the winding core 7 is continued.

On the other hand, for some reason, the leading edge f of the roll paper F
is not wound normally around the winding core 7, the path of the roll paper F does not change, and the winding core 7 does not swing.
4 is also not positioned opposite the photoswitch 45B. In this case, it is assumed that the winding is defective, and the drive of the motor M of the drive unit 16 is stopped, and the operation of the main roll paper winding device 61, image forming device, etc. is also stopped, and a message to that effect is displayed on the display panel, etc. be done.

Now, if the winding of the roll paper F around the winding core 7 is normal, the winding is continued, and the winding of the roll paper F around the winding core 7 is normal.
With the increase in the number of winding ports, the above-mentioned path of the roll paper F changes further toward the road, and the guide member 23 is largely oscillated clockwise.

Then, as shown in FIG. 4, the lower kite plate 25 of the guide member 23 comes into contact with the outer periphery of the rolled paper F, but since this contact is made via the rollers 33, the lower guide plate 25 This will not cause any damage to the roll paper F.

In this way, the winding of the roll paper F onto the winding core 7 is completed.

Note that when the roll paper F wound around the winding core 7 is rewound after the fact, the leading end f of the roll paper F will eventually touch the locking mechanism 20.
It reaches the point where it is locked. Therefore, as shown in FIG. 6, when the tip part f is tilted approximately toward the locking roller 21 side (left side in the drawing) and pulled, that is, in the case of the above-mentioned winding, it is tilted toward the leaf spring 22 side (right side in the drawing). When the roll paper F is tilted to the opposite side and pulled to the center, the leaf spring 22
Since a pressing force is applied to the locking roller 21 and the leaf spring 22, the pressure contact force between the locking roller 21 and the leaf spring 22 is weakened. It ends up being removed.

As explained above, in order to wind the roll paper F around the winding core 7, it is only necessary that a small portion of the tip (1) of the roll paper F be locked by the locking mechanism 20. The number of parts used is extremely small, and as a result, waste of the roll paper F is greatly reduced.

Furthermore, since the locking mechanism 20 is used, the leading end f of the roll paper F can be securely secured to the winding core 7 by nine turns, and the subsequent winding can also be ensured. Furthermore, its structure is simple, and since the roll paper F is not pressed against the winding core 7, the photosensitive surface of the roll paper F coated with emulsion is not damaged. By simply adjusting the length of the locking mechanism 20 to correspond to the maximum width of the roll paper, stable winding of roll paper F of various widths is possible.

The above is the explanation of the operation, etc. of the present roll paper winding device 6.

``Example 1'' Note that the winding core 7 formed in the paper roll winding device 6 of the present invention is not limited to that described in the embodiment above, and for example, the following one may be used. .

That is, the winding core 7 shown in FIG. 9 uses a pair of core metal members 71 and 71 each having a shape in which a cylindrical body is divided into two along the axial direction, and the ends 72 , 72 , . As it curves towards the side, the core metal material becomes thinner.

Surins 1 to 19 are formed between 71, and both ends thereof are closed and fixed with side plates (not shown). And the core material 71,7. Rubber belts 46 and 46 each having a high coefficient of friction are wound around the rubber belts 46 and 46.
．． 46 cover the mandrels 71, 71 in the outer part and face each other in the inner part to form the locking mechanism 20.

When winding up the roll paper F, the guide member 23
The tip of the roll paper ``f'' that has been guided from the discharge port 28 of
is inserted between the rubber bells 1 to 46, which are the locking mechanism 20, through the slit 19, and then the winding core 7 is rotated.
Due to the frictional force caused by 6, the rubber belts 46 and 46 are curved and pressed and locked. and roll paper F
is wound onto the winding core 7.

The winding core 7 shown in FIG. 9 is like this,
The other configurations, the relationship with the kite member 23, the operation thereof, etc. are the same as those described in the previous embodiment, so the explanation thereof will be omitted.

Incidentally, in the winding core 7 shown in FIG. 9, when the rolled paper F is rewound and removed from the winding core 7, the leading end f of the roll paper F is very easily locked. The rubber bells 1 to 46 of the mechanism 20 have the advantage of being unlatched by the rubber bells 1 to 46 and being pulled out.

"Effects of the Invention" As explained above, the roll paper winding device according to the present invention includes a winding core equipped with a slit and a locking mechanism, a predetermined guide member, and a positioning means.
To automatically wind up roll paper without waste, reliably, simply, and without damage, and to easily accommodate various widths. In other words, when winding up the roll paper, it is only necessary to lock the core part at the tip of the roll paper to the winding core and wrap it around the winding core twice, instead of having to wrap it around the outer circumference twice as in the past, and when the roll paper is unused. This eliminates the problem of a lot of waste. Furthermore, since the leading end of the roll paper is locked by the locking mechanism, the roll paper can be reliably wound onto the winding core, and the occurrence of winding accidents can be significantly reduced. In addition, its structure is simple, and the roll paper is not pressed against the winding core. It has remarkable effects, such as being superior in terms of productivity and eliminating the problems that existed in conventional winding devices of this type.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a roll paper winding device according to the present invention. Figures 2, 3, and 4 are front sectional views showing the operation. Figure 2 shows the state before operation, Figure 3 shows the state during operation, and Figure 4 shows the state after operation is completed. Each state is shown. Figures 5 and 6 are enlarged front sectional views showing the winding core. Figure 5 shows the state when the roll paper is locked, and Figure 6 shows the state when the roll paper is released. Each state is shown. 7 and 8 are enlarged front views showing the winding detection means, and FIG. 7 shows the state in which the two openings are not facing the respective switches, and FIG. One opening is shown facing the fo[ switch. FIG. 9 is an enlarged front sectional view showing another embodiment of the winding core. FIG. 10 is a schematic front sectional view showing an example of an image forming apparatus using a roll paper winding device. 6... Roll paper winding device 7... Winding core 16... Drive mechanism 19... Surin I~ 20... Locking device 5 groove 23... Guide member 28... Discharge port 37 ...Positioning means F...Roll paper f...Tip T/F r Fig. 7 Fig. 8 Fig. 9 Fig. 1 and Fig. 10

Claims (1)

[Scope of Claims] A substantially cylindrical paper that is rotatably driven by a drive mechanism and includes a slit into which the leading end of the roll paper is introduced, and a locking mechanism built in corresponding to the slit to lock the leading end. a take-up core consisting of a winding core; a guide member that guides the leading end of the transported roll paper to the wind-up core at an initial position and is movable from the initial position; and the guide member at the initial position. A roll paper winding device comprising: positioning means for arranging the slit of the winding core to face the discharge port of the roll paper winding device.