JPS59230940A - Rolled paper supply device - Google Patents

Abstract

PURPOSE:To make it possible to surely remove any slack in a rolled paper upon stopping of the supply of the rolled paper, by disposing a roll assembly independently and rotatably supported, between the rolled paper and the leading end part which is paid out from the rolled paper. CONSTITUTION:With the leading end part 1a paid out from the rolled paper 1 is held between a pair of rolls 8, 9, the paper is fed by rotating either one or both of rolls 8, 9 in such a condition that braking torque is exerted to the rolled paper 1 without being contacted to the surface of the rolled paper 1. In this rolled paper supply device, a plurality of rolls 10 are held in parallel with each other, and as well, a roll assembly 13 which is independently and rotatably supported, is disposed between the rolled paper 5 and the leading end part 1a paid out from the rolled paper 5. With this arrangement, any slack in the rolled paper is surely removed upon stopping of the supply of the rolled paper with no bad affection being effected to the rolled paper by a pair of rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll paper feeding device that intermittently feeds rolls of paper to equipment as needed.

A sheet of conventional paper cut to a size of &'i constant length and width,
-It is more expensive than Ichirugi.

In addition, paper sizes are divided into various types such as A column, B column, letter size, and legal size, but if the numbers in column A and B differ by 1, the smaller one with the number up to G in the same column σ ] Large paper 7 and a half analysis If you use roll paper in row A or row B, where the stacked dimensions correspond to the smaller size paper with the larger number, you can change it to 1 size or double or 61 halves. Since two types of paper of size σ] can be obtained with just one paper, it is preferable to use roll paper rather than sheet paper from the viewpoint of cost and fewer types of paper to be prepared.

For this reason, conventionally it is not shown in the 6"i 1st P4.
Roll paper feeding devices such as

A roll paper 01 is wound spirally around a roll core (not shown), is fitted onto a shaft 02, and is held between 7 lunges 03 on both sides of the shaft 02, and is held at both ends of the shaft 02. The brake plate 090 is placed in the notch 06 of the frame 05 via the bearing 04, and is held by the push plate 08 biased by the spring 07. A spring 011 is tensioned between the end and the fixed part, and with the force of 0.1 spring 011σ] C, the brake plate 09171 tip friction piece 010 will be damaged once in 1 m of the roll paper 01.
c is being done.

Also, the leading edge of the rolled paper 01 is fed out %lS
Ol a has a pair of upper and lower vinyl rolls 01.2. ! : The roll paper 016 is fed by the rotation of the feed roll 013 (which is sandwiched between the feed rolls 013 and 013σ).

When such a roll paper feeding device (here 64, the roll paper 0 is switched from the paper feeding state to the stopped state) attempts to continue rotating due to rotational inertia, the friction piece 010 and the roll The frictional resistance with the surface of the paper 0M71 prevents the loosening of the leading edge of the paper 0M71, and this slack prevents paper jams caused by diagonal feeding, meandering, and unevenness. was trying to prevent it.

However, the inertia rate of roll paper 01 fluctuates widely in the paper and the remaining amount of roll paper used, and the T
The paper quality of the rolled paper causes friction I=\'010, which causes a significant change in the frictional resistance force L, and in addition, due to changes in the roll diameter, the spring force of the tin ring 01.1 changes. The resistance force changes and therefore the tip of the roll paper W f)
1. aσ] It was not possible to completely remove the looseness.

Also, when the roll paper 01 is strongly pressed with the friction piece 010, σ
] When paper dust is generated from the surface of the roll paper 010 due to friction, the properties of the paper surface change, and in a copying machine, the development transfer efficiency decreases and problems such as copy omission occur.

Invention σ] Purpose of the present invention C: To improve a roll paper feeding device that overcomes the 5 major drawbacks. When the paper is stopped, the roll paper feeding device is designed to ensure that the roll paper σ is not loosened.

181 Structure of the present invention, the tip of the roll paper fed out from the roll paper is pinched between a pair of rolls, without touching the surface of the roll paper, and with no braking torque applied to the roll paper. A roll assembly in which either one of the pair of rolls is folded is interposed between the roll paper and the tip g of the fed roll paper, and when the absorption member swings, the tip of the roll paper σ is
) Loose parts can be removed.

Embodiments The present invention (1) will be explained with reference to FIGS. 2 to 4.

Roll paper IC or gt1. Wrap the roll core in a spiral shape (Ha2, the same roll core L, go, shirt) 2G and fit it together 21. ing.

'E T= The 7 langes 3 are spline-fitted to both ends of the shaft 2 rn, (S I integrated with the 7 langes 3) -
The brake lever 4C is mounted from above on a pivot 5 integral with the frame, and the base end of a brake piece 60 is pivotally attached to the pivot NS5 so as to be able to swing up and down. Hold the roll paper by 4 inches and apply a braking force of 7 to roll paper 1.
A tin ring 7 is stretched.

Pinch roll 8 and feed roll 9 Pinch roll 8 and feed roll 9 A pair of upper and lower sides of the roll paper 1 are arranged parallel to the roll L [1, and the roll paper is sandwiched between the rolls 8 and 9. At the leading end 1 a Ci, on the side of the motor (not shown), there are a plurality of rolls 10 having approximately the same length as the inside of the roll paper 10, having a small diameter, smooth surfaces and low friction, and bearings (not shown) running parallel to each other. The roll 10 is supported by support plates 1.1.11 on both sides with support plates J
1.117 A roll assembly 13 constituted by a plurality of rolls 10 connected by a spacer 12 and rotatably supported independently is placed between the roll paper 1 and the roll paper leading end 1a. Due to the guide members placed on the sides of the roll paper 1, the roll assembly 13 does not move in the longitudinal direction, and the roll paper 1σ] rotation E is free to rotate. Things are going well.

2nd to 4th Figures σ] The embodiment is as described above.
When there is no slack in the leading edge of the roll paper 1α between and 61,
As shown in FIG.
It is slightly curved and the rest is flat.

However, for example, Sho Rr, feet ° roll 9σ〕1i] from the state of doing fire, stop turning and feed 1
When it is stopped, the roll paper 1 is released by the brake piece 6.
Even if the brake cuff 1i is working, the roll paper 1 cannot stop suddenly due to its large inertia factor (the gap between the roll paper 1 and the feed roll 9 and
However, due to the weight of the roll assembly 13G,
As shown in FIG. 4, the foregoing is absorbed between the roll paper leading edge 1a and the roll paper 1, and the roll paper leading edge 1a is in a state of tension. can be retained.

In addition, when one roll of paper is wrapped in a spiral shape,
Since the surface exposed to the atmosphere is narrow, it maintains a dry state, and as the paper feeding stop time elapses, the leading edge of the roll paper 1. a&
Even if it absorbs moisture and becomes stretched and gauzy,
Since gravity acts downwardly on the roll assembly 13, the loosening of the leading end 1a of the roll paper due to such causes can be absorbed.

Since the leading edge 1a of the roll paper can always be maintained in a tensioned state by the roll assembly 13, the leading edge 1a of the roll paper will not be displaced to one side in the paper feeding state. , the pinch roll 8 and the feed roll 9 are not tilted obliquely to a plane perpendicular to their center lines, and oblique feeding, meandering, and deviation do not occur, and paper jams are prevented.

In the above embodiment, since the direction of contact of the assembly 13 with the outer circumferential surface of the roll paper 1σ and the tip end portion 1α of the roll paper is opposite, it is preferable that the outer circumferential surface of the roll assembly 13 is smooth and has a small coefficient of friction. However, depending on the case, extremely thin protrusions or grooves may be formed on the outer peripheral surface of the roll assembly 131 in the circumferential direction. Roll assembly 13σ] movement along the scarlet G is suppressed.

Roughly speaking, in the above example, the C roll aggregate 1:3 is σ]
Although the looseness of the leading end portion 1a of the roll paper is absorbed by its own weight, it is also possible to use a spring blade to absorb the looseness.

Effects of the Invention In the present invention, as described above, the tip of the roll paper fed out from the roll paper is sandwiched between a pair of rolls, and a braking torque χ is applied to the same roll paper without contacting the surface of the roll paper. Either one of the pair of matrices (q) has a roll assembly pivotably supported to rotate the roll, and the roll paper and the feeding shaft 1. - Even if the leading edge of the roll paper were to become loose due to some reason due to the presence of a gap between it and the leading edge of the roll paper, this loosening can be absorbed by the roll assembly. It is possible to prevent paper jams due to skewed feeding, meandering, and misalignment of paper due to looseness.

The rollers 6, which roughly constitute the roll assembly, are rotatably supported independently of each other, and the roll assembly σ] makes contact with the outer peripheral surface of the roll paper and the leading end of the roll paper. By this, the rolls of the roll assembly exert sliding friction on both the outer peripheral surface of the roll paper that is in contact with the roll paper and the roll paper at the tip of the roll paper. Because it is in the direction of rotation of the roll, it can be rotated in the opposite direction, so it feeds paper without changing the surface properties of the roll paper, and improves development transfer efficiency due to paper jams caused by slanted feeding, meandering, and lopsided paper. This can be prevented from decreasing.

Furthermore, in the present invention, braking torque is applied to the roll paper without contacting the roll paper surface, so that it is possible to prevent the properties of the roll paper surface from changing, and to prevent the generation of paper dust. Paper processing such as copying, etc. can be carried out inexpensively, reliably and smoothly.

[Brief explanation of the drawing]

FIG. 1 is an exploded schematic perspective view of a conventional roll paper feeder, FIG. 2 is a schematic perspective view illustrating an embodiment of the roll paper feeder according to the present invention, and FIGS. Side view of the assembly, longitudinal sectional view of main parts, Fig. 5 and Fig. 6P
XJ is a side view illustrating a state in which the leading end of the roll paper is not excessively paid out from the roll paper and a state in which it is excessively paid out in the same embodiment. ]... Roll &, 2... Shaft, 3... 7 Lunge, 4... S τJ-F-5... Pivotal part, 6... Brake piece, 7... Suffix 9? Ring, 8...Pinch roll, 9...Feed roll, IO...Roll, 11...Support plate, 12...
- Spacing material, 13... roll assembly. Agent: Patent attorney Nozomi Ehara (1 person) Figure 3) 1 Figure 4n Figure 6

Claims (1)

[Claims] Feeding from roll paper 71. By holding the tip of the rolled paper between the pair of rolls and rotating one or both of the pair of rolls while applying a braking torque to the rolled paper without contacting the surface of the rolled paper. In a roll paper feeding device that feeds paper, a roll assembly that holds a plurality of rolls parallel to each other and is independently rotatable is connected to the roll paper and the tip of the roll paper. 7. A roll paper feeding device characterized by intervening between part and σ).