JPH0551156A - Roll sheet loading device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of loading the roll sheet and to reliably load the roll sheet. [Configuration] When the roll sheet 2 is loaded into the storage unit 3,
Drive means 6 for rotating the sheet 2, suction means 7 for sucking the sheet 2, and detection means 7c for detecting suction pressure
Is driven to utilize the change in suction pressure detected by the detection means 7c to perform the sheet roll loading operation by the guides 8 having the respective means 6, 7, 7c and the roller 8b for conveying the sheet. [Effects] As described above, since the operator simply puts the roll sheet into the storage unit and all the subsequent work is automated, the work of loading the roll sheet is easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device having functions such as a facsimile, a copying machine, a printer, etc., and a roll sheet used for a recording device used as an output device such as a multifunction peripheral or a workstation having such functions. Regarding the loading device, specifically, there are two kinds of recording materials used in the recording device, that is, a recording sheet that is cut into a standard size in advance and a roll sheet formed by winding the recording sheet. Relates to the loading device for the latter roll sheet.

[0002]

2. Description of the Related Art A conventional example of a recording apparatus using a roll sheet formed by winding a recording sheet will be described with reference to FIG. FIG. 9 is a main sectional view of the ink jet recording apparatus,
It is composed of a document reading section R and an image recording section P. A roll sheet storage unit 102 for storing a roll sheet 101 formed by winding a recording sheet 101a is disposed below the image recording unit P.
Are the first conveying roller pair 103, the guide pair 104, the second
An image is recorded by the inkjet recording unit 109 between the sub-scanning roller pair 107 and the pulling roller pair 108 via the conveying roller pair 105 and the cutter 106.
After being cut to the desired size by 06, the discharge roller pair 1
It is discharged from the discharge port 111 to the outside of the apparatus by 10. To describe the roll sheet loading operation of the apparatus, first, the door 112 is opened, the roll sheet storage unit 102 is pulled out to the outside of the apparatus (direction of arrow x), and the roll sheet 101 is loaded. Next, the storage unit 102 is stored inside the device (direction of arrow y), and one of the first and second storage units can be opened and closed in the direction of arrow z.
After the front end portion of the roll sheet 101 is sandwiched between the conveying roller pair 103 and the guide pair 104, the door 112
Is closed and the roll sheet loading operation is completed.

[0003]

However, in the above-described conventional example, the operator performs all the work of loading the roll sheet until the leading end of the roll sheet 101 is sandwiched between the first conveying roller pair 103 and the guide pair 104. It had the disadvantage of having to be done manually. Especially A2
In a loading operation of a roll sheet formed by winding a large-sized recording sheet such as a plate and an A1 plate, the roll sheet 1 is placed between the first conveying roller pair 103 and the guide pair 104.
When the leading edge of No. 01 is sandwiched and the tension or slack at both ends of the leading edge is not balanced, skewing, waviness, or wrinkles may occur when the sheet is conveyed. It was

In the ink jet recording apparatus as shown in the above conventional example, the distance between the recording sheet conveyed to the recording section and the recording head for recording on the sheet is usually 0.5 to 1.0 mm. Because of its small size, not only the recording sheet and the recording head rub against each other, but the image quality is significantly deteriorated, dust is attached to the recording head to prevent ink ejection, and further, the recording section is jammed for recording. There was a risk of damaging the head.

Further, in the apparatus for performing electrophotographic recording,
When a toner image formed on the photoreceptor of the image transfer portion is transferred onto a recording sheet, if the recording sheet has waviness, wrinkles, or the like, a transfer failure occurs and a desired image cannot be obtained. there were.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to facilitate the loading work of the roll sheet and to surely perform the loading work. It is intended to provide a sheet loading device.

[0007]

A typical means for solving the above-mentioned problems and applied to the embodiments described below is a roll sheet storage portion for storing a roll sheet formed by winding a recording sheet, Driving means for rotating the roll sheet loaded in the storage portion in the circumferential direction, a rotating body disposed below the storage portion so as to contact the loaded roll sheet, and the roll sheet loaded. On the other hand, a suction unit that takes a proximity position and a retracted position to suck the sheet,
Detection means for detecting suction information of the suction means,
And a transporting unit that transports the sheet sucked by the suction unit to the suction unit at the retracted position, the contact position and the retracted position. Further, when the roll sheet is loaded into the storage section, the driving unit and the suction unit and the detection unit in the contact position with respect to the roll sheet are driven, and the suction information detected by the detection unit is the first predetermined value. Is reached, the suction means is swung to the retracted position, and the suction information is changed to the second
When the predetermined value of is reached, the drive means is stopped,
The transport means swings to the abutting position with respect to the suction means.

[0008]

According to the present invention, when the roll sheet is loaded into the apparatus housing portion, the driving means, the suction means and the detecting means are driven, and the sheet by each means is based on the information detected by the detecting means. By configuring the roll loading operation to be performed, the loading operation is fully automated, the loading operation of the roll sheet is facilitated, and the loading of the roll sheet is surely performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roll sheet loading device according to the present invention will be described with reference to the drawings.

[First Embodiment] FIGS. 1 and 2 are perspective views showing the construction of a roll sheet loading device. In FIG. 1, reference numeral 1 denotes a main body of a loading device, and a frame body 3 for supporting a roll sheet 2 formed by winding a recording sheet inside a storage cover 1a. U-shaped grooves 3a and 3b having different opening widths for inserting core tubes protruding from both ends of the roll sheet 2 are provided at both ends in the longitudinal direction of the frame body 3. The core tubes have different outer diameters A and B (A> B), and are configured to be foolproof in the loading direction of the roll sheet 2. Below the U-grooves 3a and 3b, a friction roller 4, which is a rotating body, is disposed which is always in contact with the outer diameter of the roll sheet 2. Therefore, as the roll sheet 2 is consumed and its outer diameter becomes smaller, the center position of the roll sheet 2 approaches the friction roller 4 direction. A rotary gear 5 is integrally provided on one core tube of the roll sheet 2, and a drive means 6 for rotating the roll sheet 2 in the direction of the arrow in the drawing is engaged with the rotary gear 5. ..

The drive means 6 includes an arm 6b swingable about a support shaft 6a, a rotation motor M1 with a clutch as a drive source, and a drive pulley 6c fixed on the output shaft of the rotation motor M1. A driven pulley 6e integrally formed with the output gear 6d, and a drive belt 6f suspending the pulleys 6c and 6e. The driven pulley 6e
The output gear 6d formed integrally with the roll sheet 2 is rotatably supported on the pin 6g fixed to the arm 6d, and is engaged with the rotary gear 5 provided at the end of the roll sheet 2 by the tension spring 6h. Therefore, the output gear 6d follows the rotary gear 5 because the arm 6d swings against the restoring force of the tension spring 6h even if the sheet of the roll sheet 2 is consumed and the center position moves. The driving force is transmitted by driving and rotating the turning motor M1, and the roll sheet 2
Rotates in the direction of the arrow (winding direction) in the figure.

In FIG. 2, a phase direction torque limiter 4a is provided at one end of the friction roller 4 provided below the U grooves 3a and 3b, and the roller 4 is provided with an external force of a predetermined value or more on its outer circumference. It is designed to be rotatable only when given. Further, inside the frame body 3, suction means 7 for sucking the sheet fed from the roll sheet 2 is arranged. The suction means 7 is composed of a sealed box body 7a, a suction pump 7b having a suction pressure detection means 7c for detecting suction pressure, and a tube 7d communicating the both, and the box body 7a. The suction surface 7a1 has a plurality of suction holes 7a2.

Further, the box body 7a has a suction surface 7a1 having a plurality of suction holes 7a2 for sucking a sheet,
An arm 7e having a pin 7e1 engaging with the frame 3 is attached to both ends thereof, and the pin 7e1 is attached by a swinging means (not shown).
The roll sheet 2 is configured so as to be close to and retracted from the roll sheet 2 with the e1 as the swing center. Also, the arm 7e
A driven transport roller 7f for sandwiching and transporting the roll sheet 2 is rotatably supported by. The outer peripheral surface of the driven conveyance roller 7f is supported at a position in contact with the plane formed by the suction surface 7a1 of the box body 7a or at a position slightly protruding toward the roll sheet 2 side. Further, the suction surface 7a1 when the box 7a is in the retracted position is configured to coincide with a tangential plane passing through the contact point between the roll sheet 2 and the friction roller 4.

Further, the guide 8 provided downstream of the roll sheet 2 in the conveying direction has a pin 8a engaging with the frame 3 at one end, and a drive which is a sheet conveying means rotatably driven by a conveying motor M2 at the other end. It has a transport roller 8b. The guide 8 is configured to be swingable around a pin 8a, and swings toward the suction means 7 when the suction means 7 that sucks the roll sheet 2 is in the retracted position, and is driven by the drive / conveyance roller 8b. The roll sheet 2 is nipped by the transport roller 7f and is in a transportable state. At this time, the suction surface 7a1 of the box 7a and the guide 8 have a gap for sheet conveyance,
A transport path for transporting the roll sheet 2 is formed.

The operation of the roll sheet loading device will be described with reference to the flowchart of FIG. 3 and the explanatory view showing the operating state of FIG. When the roll sheet 2 is loaded into the loading device main body 1, the rotary gear 5 engages with the output gear 6d of the driving means 6, and the rotation motor M1 with a clutch is driven in step S1. As shown in, the roll sheet 2 begins to rotate in the direction of arrow a (winding direction).
At this time, the suction surface 7a1 of the box body 7a is in the proximity or contact position of the roll sheet 2, the suction pump 7b of the suction means 7 starts the operation in step S2, and the suction surface 7a1 is entirely in the vicinity of the leading end of the roll sheet 2. And all the suction holes 7a2 are closed by the roll sheet 2. Next, in step S3, the change in suction pressure when the suction pressure when all the suction holes 7a2 are exposed is P0 is detected by the suction pressure detection means 7c,
It is determined whether or not the predetermined pressure P1 is reached. When the suction pressure detected here is equal to or lower than the predetermined pressure P1, the winding operation is continued, and when the suction pressure reaches or exceeds the predetermined pressure P1, the process proceeds to step S4, and the rotation motor M1 is temporarily stopped (or the clutch is released).
To do.

Next, as shown in FIG. 4B, the suction means 7 moves to the retracted position (feeding position) while sucking the vicinity of the leading end of the roll sheet 2 (step S5). The rotation motor M1 is driven again to wind the roll sheet 2 sucked on the suction surface 7a1 of the box 7a (step S6).
Then, as shown in FIG. 4C, the suction holes 7a2 on the suction surface 7a1 start to be exposed. The change in suction pressure at this time is detected by the suction pressure detection means 7c, and the predetermined pressure P2 (P0
<P2 <P1) is determined (step S)
7). If the suction pressure detected here is equal to or higher than the predetermined pressure P2, the winding operation is continued, and if it reaches the predetermined pressure P2 or lower, the process proceeds to step S8, and the rotation motor M1 is stopped.

Next, as shown in FIG. 4 (d), the guide 8 having the drive / conveyance roller 8b swings to the sheet feeding position, and the drive / conveyance roller 8b and the driven / conveyance roller 7f cause the roll sheet 2 to move. The vicinity of the leading end is sandwiched, and the guide 8 and the suction surface 7a1 of the box 7a form a conveyance path for the roll sheet 2 (step S9). Then suction means 7
Of the suction pump 7c is stopped (step S10), the transport motor M2 is driven, the drive transport roller 8b starts to rotate in the direction of the arrow b, the roll sheet 2 is fed, and the intermediate roller pair 9 is used to feed the roll sheet 2. It is introduced into the main body side (step S11). As a result, the loading operation of the roll sheet 2 is completed, the image recording process is executed in the next stage, and a desired image is obtained (step S12).

When the roll sheet 2 is to be taken out, by inputting a take-out command to an operation unit (not shown), the cutter on the recording apparatus main body side operates to cut the roll sheet 2 and then conveys the respective parts. The drive transmission of the rollers or the like is cut off or the pressure is released, and only the rotation motor M1 with a clutch of the drive means 6 is driven for a predetermined time to completely wind up the roll sheet 2 and the loading device body 1 The respective members take the postures shown in FIG. 4 (b). still,
Even during the winding operation, the load of the torque limiter 4a of the friction roller 4 is applied to the roll sheet 2, so that the roll sheet 2 is wound without causing slack or wrinkles.

Therefore, the loading operation in the loading device is only required to be performed by the operator to load the roll sheet into the device, and the subsequent setting is automatically performed by the device. The work is extremely simple because it is completely wound and has no slack or wrinkles.

[Second Embodiment] The roll sheet loading device in the first embodiment uses air suction, and detects the change in suction pressure to detect the leading end of the roll sheet for feeding. The present invention is not limited to this, and an electrostatic attraction plate may be used as a means for attracting the vicinity of the leading end of the roll sheet, and a sheet detection sensor may be used to detect the leading end. Now, an apparatus using both means will be described.

As shown in FIG. 5, the suction means 11 of the main loading device includes a box 11a having an electrostatic attraction plate 11a1 for attracting the vicinity of the leading end of the roll sheet 2, and a controller 11b for driving the attraction plate 11a1. , Both parts 11a, 11b
And a cable 11c for connecting the cable and a reflection type sensor S for detecting the leading end of the roll sheet 2 on the electrostatic attraction plate 11a1.
1 and S2, the other parts have the same structure as the first embodiment and perform the same operation. The sensors S1 and S2 are arranged at different positions in the transport direction, and when the sensors S1 and S2 detect the presence or absence of the leading end of the roll sheet 2 on the electrostatic attraction plate 11a1,
Turns on when detecting "with sheet", "without sheet"
When it is turned off when it is detected, the sensors S1 and S
There are four combinations of the two outputs, which will be described in detail below.

The operation of this embodiment will be described with reference to the flowchart shown in FIG. The operation posture and timing of each part of the loading device are the same as those shown in FIG. 4 of the first embodiment. When both the sensors S1 and S2 are in the OFF state, it is a state before the roll sheet 2 is loaded into the apparatus main body. When the roll sheet 2 is loaded here, the first
Similar to the embodiment, the rotation motor M1 with clutch and the electrostatic attraction plate 11a1 start to operate (steps S21 and S2).
2), near the tip of the roll sheet 2 is the electrostatic attraction plate 11a1
It is adsorbed on the entire surface and the sensors S1 and S2 are closed by the roll sheet 2.

Both the sensors S1 and S2 are O.
The N state is set (step S23), and the rotation motor M1
Is temporarily stopped (step S24), and then the suction means 11
The electrostatic attraction plate 11a1 moves to the retracted position (feeding position) while attracting the vicinity of the leading end of the roll sheet 2 (step S25). The rotation motor M1 is driven again to wind up the roll sheet 2 adsorbed on the electrostatic adsorption plate 11a1 (step S26), the sensor S1 on the electrostatic adsorption plate 11a1 is exposed, and the sensor S1 is turned off. , Sensor S2 is O
When in the N state (step S27), the rotation motor M
1 stops (step S28). Therefore, the leading end of the roll sheet 2 has the sensors S1 and S2.
The roll sheet 2
Is detected.

Thereafter, similarly to the operation of the first embodiment, the guide 8 having the driving and conveying roller 8b swings to the sheet feeding position, and the roll sheet is driven by the driving and conveying roller 8b and the driven conveying roller 7f. Hold near the tip of 2,
Further, the guide 8 and the electrostatic attraction plate 11a1 of the box 11a form a conveyance path for the roll sheet 2 (step S2).
9). Then, the controller 11b of the suction means 11 is stopped (step S30), the transport motor M2 is driven, the drive transport roller 8b starts to rotate in the transport direction, the roll sheet 2 is transported, and recording is performed via the intermediate roller pair 9. It is introduced into the apparatus main body side (step S31). As a result, the loading operation of the roll sheet 2 is completed, the image recording process is executed in the next stage, and a desired image is obtained (step S3).
2). When the sensor S1 is on and the sensor S2 is off, a sensor error is announced on a display unit (not shown).

[Third Embodiment] Still another embodiment will be described. In the loading device described in the above embodiments and the like, the vicinity of the leading end portion of the roll sheet 2 is sucked only by the air suction force or the electrostatic suction force. However, depending on the material of the roll sheet 2, the sheet is sucked by curling or charging. May be incomplete. Therefore, in this embodiment, in order to increase the certainty of the operation, in addition to the suction means, a pin 12a serving as a swing fulcrum is provided at one end as an auxiliary means, and the fast feed roller 12b driven by the fast feed motor M3 is provided at the other end. And an arm 12 having In the arm 12, the fast-forward roller 12b is located upstream of the friction roller 4 and the roll sheet 2
It is arranged so as to contact the outer peripheral surface. Further, the fast-forward roller 12b causes the roll sheet 2 to move by the fast-forward motor M3.
It is set to rotate in the same direction at a peripheral speed higher than the peripheral speed.

The structure and operation of the apparatus in this embodiment will be described with reference to the flow chart shown in FIG. 7 and the operation diagram of the loading apparatus shown in FIG. The basic structure is almost the same as that of the device described in the first embodiment, and the same parts are designated by the same reference numerals. Further, the auxiliary means may be used in the device described in the second embodiment.

When the roll sheet 2 is loaded into the loading device main body 1, as shown in FIG. 8 (a), the rotation motor M1 with clutch and the suction pump 7b of the suction means 7 operate as in the first embodiment. Start (steps S41 and S42). Next, when the arm 12 swings in the direction of arrow c and the fast-forwarding roller 12b comes into contact with the outer peripheral surface of the roll sheet 2, the fast-forwarding motor M3 is driven to move the fast-forwarding roller 12b into the arrow d.
By rotating in the direction, only the outermost peripheral sheet of the roll sheet 2 is fed out, and the loop R of the roll sheet 2 is formed between the fast feed roller 12b and the friction roller 4 (step S43). Then, the vicinity of the leading end of the roll sheet 2 is sucked to the entire suction surface 7a1, and all the suction holes 7a2 are closed by the roll sheet 2. Next, a part of the loop R is sucked and held by the suction means 7 located close to or in contact with the loop R, and a change in suction pressure at this time is detected by the suction pressure detection means 7c. A determination process similar to step S3 described in the example is performed (step S44).

As shown in FIG. 8B, the step S4 is performed.
If it is determined in step 4 that the predetermined pressure P1 or more is reached, the rotation motor M1 is temporarily stopped (step S45), and the arm 12 having the fast-forward roller 12b is retracted away from the outer peripheral surface of the roll sheet 2. While moving to the position, the driving of the fast-forward motor M3, which is the drive source of the fast-forward roller 12b, is stopped (step S46).

Next, the suction means 7 moves to the retracted position (feeding device) while suction-holding the roll sheet 2 (step S47), and the rotation motor M1 is driven again to move it onto the suction surface 7a1 of the box 7a. The sucked roll sheet 2 is wound up (step S48). Then, as shown in FIG. 8C, the suction holes 7a2 on the suction surface 7a1 start to be exposed. The change in suction pressure at this time is detected by the suction pressure detection means 7c, and the first
A determination process similar to step S7 described in the embodiment is performed (step S49). If it is determined that the suction pressure detected in step S49 has reached the predetermined pressure P2 or less, the rotation motor M1 is stopped (step S5).
0).

Next, as shown in FIG. 8D, the guide 8 having the driving / conveying roller 8b swings to the sheet feeding position, and the driving / conveying roller 8b and the driven / conveying roller 7f move the roll sheet 2. Hold near the tip (step S5
1), the suction pump 7c of the suction means 7 is stopped (step S52), the transport motor M2 is driven, the drive transport roller 8b starts to rotate in the direction of arrow b, the roll sheet 2 is fed, and the intermediate roller is fed. It is introduced to the main body of the recording apparatus via the pair 9 (step S53). As a result, the loading operation of the roll sheet 2 is completed, the image recording process is executed in the next stage, and a desired image is obtained (step S54).

Therefore, the vicinity of the leading end of the sheet can be surely sucked even from the rolled sheet 2 which is attracted due to curling or charging, and the rolled sheet 2 of which the small diameter has been consumed is loaded. However, the leading end of the roll sheet can be detected and introduced into the main body.

[0032]

As described above, in the roll sheet loading apparatus of the present invention, the operator only has to load the roll sheet into the apparatus storage portion, and the subsequent loading operation of the roll sheet is automatically performed. The complicated manual operation related to is completely eliminated, and the roll sheet loading operation is easy. In addition, since the roll sheet is reliably loaded by the action of the torque limiter provided on the roller, which is a rotating body disposed below the storage section, and the automated roll sheet loading operation, the roll sheet can be reliably loaded. Problems such as wrinkles and skew in the seat are eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a general configuration of a roll sheet loading device to which the present invention is applied.

FIG. 2 is a perspective view showing a schematic configuration of a roll sheet loading device to which the present invention is applied.

FIG. 3 is a flowchart showing a loading operation of the roll sheet loading device to which the present invention is applied.

FIG. 4 is an explanatory view showing an operation posture of each unit of the roll sheet loading device to which the present invention is applied.

FIG. 5 is a second roll sheet loading device to which the present invention is applied.
It is a perspective view showing a schematic structure of an example.

FIG. 6 is a second roll sheet loading device to which the present invention is applied.
It is a flow chart which shows loading operation of an example.

FIG. 7 is a third roll sheet loading device to which the present invention is applied.
It is a flow chart which shows loading operation of an example.

FIG. 8 is a third roll sheet loading device to which the present invention is applied.
It is explanatory drawing which shows the operation posture of each means of an Example.

FIG. 9 is a main sectional view showing an image forming apparatus having a conventional roll sheet loading device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device main body 1a ... Storage cover 2 ... Roll sheet 3 ... Frame bodies 3a, 3b ... U groove 4 ... Friction roller 4a ... Torque limiter 5 ... Rotating gear 6 ... Drive means 6a ... Spindle 6b ... Arm 6c ... Drive pulley 6d Output gear 6e Driven pulley 6f Drive belt 6g Pin 6h Tensile spring 7 Suction unit 7a Box body 7a1 Suction surface 7a2 Suction hole 7b Suction pump 7c Suction pressure detection unit 7d Tube 7e Arm 7e1 ... Pin 7f ... Followed transport roller 8 ... Guide 8a ... Pin 8b ... Drive transport roller 11 ... Suction means 11a ... Box 11a1 ... Electrostatic attraction plate 11b ... Controller 12 ... Arm 12a ... Pin 12b ... Fast feed rollers S1, S2 ... Reflective sensor M1 ... Rotation motor M2 ... Conveyor motor M3 ... Fast-forward motor R ... Loop

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical display location G03G 15/00 109 7369-2H H04N 1/00 108 C 4226-5C

Claims (5)

[Claims] 1. A roll sheet storage unit for storing a roll sheet formed by winding a recording sheet, a drive unit for rotating the roll sheet loaded in the storage unit in a circumferential direction, and A rotating body disposed below the storage unit so as to come into contact with a roll sheet, a suction unit that sucks the sheet at a proximity position and a retracted position with respect to the loaded roll sheet, and suction information of the suction unit. A roll sheet loading device, comprising: a detection unit for detecting the position of the sheet, and a conveyance unit that conveys the sheet sucked by the suction unit at the contact position and the retracted position with respect to the suction unit at the retracted position. 2. When the roll sheet is loaded into the storage portion, the driving means and the suction means and the detection means which are in contact with the roll sheet are driven, and the suction information detected by the detection means When the predetermined value of 1 is reached, the suction means is swung to the retracted position, and when the suction information reaches the second predetermined value, the driving means is stopped and the conveying means is brought into contact with the suction means. The roll sheet loading device according to claim 1, wherein the roll sheet loading device swings. 3. The rotating body disposed below the storage section,
3. The roll sheet loading device according to claim 2, wherein the roll sheet is rotatably supported via a predetermined torque limiter and rotates at a peripheral speed lower than the peripheral speed of the roll sheet. 4. A roll member that has a rotating body that rotates at a peripheral speed higher than the peripheral speed of the roll sheet, and is provided with swingable auxiliary means that takes a contact position and a retracted position with respect to the roll sheet. 4. The roll sheet loading device according to claim 3, wherein the roll sheet loading device is arranged on the upstream side in the roll sheet rotation direction by the driving means with respect to the suction means at a position near the roll sheet. 5. A tangential plane passing through a contact point between a rotating body disposed below the storage section and a roll sheet loaded in the storage section coincides with a suction surface when the suction means is in a retracted position. The roll sheet loading device according to claim 4.