JPS59172348A - Roll paper holding device - Google Patents

Abstract

PURPOSE:To facilitate the loading of a roll paper by separating each mechanism of the leading end feeding portion from a roll paper draw-out path at the time of loading a roll paper in a roll paper holding device provided in a recording apparatus such as a facsimile or the like. CONSTITUTION:A roll paper accomodating portion 5 is disposed in a housing of a facsimile. The accomodating portion 5 includes left and right side plates 5a with spools for supporting a winding shaft 10a of a roll paper 10, a support plate 5b to which one side of a chassis truck 11 is fixed, the other side thereof being fixed to the machine enclosure, and a pair of holding members 5c for bearing a roll paper 10 of the maximum diameter, wherein the roll paper 10 can be drawn out to the outside of the machine through the chassis truck. A paper feed portion 6 is disposed on the roll paper drawout side of the thus constructed accomodating portion 5. The paper feed portion 6 comprises a tension roller 62 disposed on a bracket 61 pivoted on a shaft 60, a paper feed roller 63a and a manual cutter 64 and so on.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a roll paper holding device, and more specifically,
This invention relates to a holding device for roll paper loaded into a recording device such as a facunmill.

(Prior Art) A facsimile machine is one of the recording devices that form images. This facsimile device transfers an image from the sending side to the receiving side using a telephone line or the like.

A facsimile machine is equipped with recording paper to carry images to be transferred, and this recording paper has the advantage of being able to arbitrarily set the size, that is, the length in the longitudinal direction, and the Q. Roll paper (hereinafter referred to as roll paper) is used.

This roll paper is attached to a winding shaft, and is rotatably and removably installed in a paper feed section in a facsimile machine via this shaft.

Incidentally, the leading end of the roll paper is fed out toward the image forming section by the feeding means of the paper feeding section, but a moment of inertia is generated due to rotation during the feeding. This moment of inertia varies depending on the change in the winding diameter of the roll paper, and from this, when it is fed out or urged by the running part power, the feeding side of the roll paper becomes slack or tense. As a result, the amount of feed to the image forming section differs, which causes
This resulted in the disadvantage that uneven feeding of the image (roll paper f in the glyph storage section) occurred.

Therefore, in order to eliminate such drawbacks, a constant braking force is always applied to the roll paper or its winding shaft.
Making the tension on the unwinding side of the roll paper substantially constant, or detecting the amount of slack at the unwinding part of the roll paper, and controlling the rotation of the roll paper feeding means based on this detection result. have been proposed, but each method has the disadvantage that the driving force of the roll paper feeding means must be increased and the structure becomes complicated.

In addition, the mechanism of the paper feed unit, specifically, the feed row, guide plate, and cutter mechanism, which are the feeding means required when loading roll paper, as well as the cutter mechanism, etc. It is equipped with
When the leading end of the roll paper is fed into the feeding path, the above mechanism prevents the exposure of the feeding portion, which is disadvantageous in that it is difficult to set the roll paper again.

(Objective) The present invention has been made in view of the above-mentioned problems, and its purpose is to solve the above-mentioned drawbacks, to easily perform the setting operation of roll paper, and to reduce the amount of force required to set the roll paper. It is an object of the present invention to provide an o-roll paper holding device that can maintain a constant C feeding force and feed amount by suppressing the inertia of the roll paper that occurs during and after feeding.

(Structure) The present invention comprises: a tension roller that applies a constant pressing force to the unwinding of the roll paper 0111; a feeding roller that is arranged in five directions in the roll paper unwinding direction with respect to the tension roller; The cutter for the paper stack can be separated from the roll paper feed path at the same time.

The present invention will be explained below with reference to embodiments shown in the drawings.

】・Figure 1 shows a Tora 7 Nova Disktonop type 7 Acun Milli using heat-sensitive recording paper, which is an example of a device to which f) the embodiment of the present invention is applied. In the figure, the symbol ■ is Document loading table, 2 is a document separating section, 3 is a document scanning section, 4 is a photoelectric conversion section, 5 is a roll paper storage section, 6 is a paper feed section, 7 is an image forming section, 8.9 shows the cutting and recording paper ejection sections, respectively.

The document separation unit 2 is adjacent to the document placement table l, and has a portion 1i1110- which abuts against each other across the document feeding path.
It consists of a roller 2a and a friction plate 2b, and is designed to prevent double sheet feeding of originals.

The document scanning unit 3 includes two silk feeding rollers 3a that abut each other across a feeding path, a target glass 3b disposed between the feeding rollers 3a, and a reflective member 3c located on the back surface of the target glass. The surface of the target glass 3b (lower surface in the figure) (l!l) consists of a light source 3d for document illumination arranged at , and guides the reflected light to a photoelectric conversion section, which will be described later.

The photoelectric conversion unit 4 includes a reflecting mirror 4a disposed on the light source II [1 of the original scanning unit 3] and a light receiving sensor 4b integrated with a lens unit, and converts the reflected light from the original into the optical sensor 4b via the lens unit. It receives light and converts it into an electrical signal.

On the other hand, the roll paper storage section 5 and the paper feed section 6 are equipped in the same housing, the configuration of which will be explained in detail later, and the roll paper storage section 5 is capable of feeding out the leading end of the roll paper 10 upward. In addition, the paper feed section 6 eliminates the moment of inertia that occurs in the roll paper 10 when the facsimile is operated, and cuts it into lengths when loading the roll paper. It is something.

The image forming unit 7 includes a generally known thermal head 70 that uses Ziehl heat as an input signal to color the roll with heat-sensitive N on the roll, and a habit of pressing the roll paper lO against this thermal head 70. It consists of a back pressure roller 71 that conveys and drives the roll paper by a drive source consisting of a stencil motor. This is done to form l1ll@.

The cutting section 8 consists of a cutter 80 arranged adjacent to the image (8) forming section 7, that is, a movable blade 80a and a fixed blade 8ob. The roll paper IO is composed of a pair of rollers that are in contact with each other, and the roll paper IO is cut into a predetermined length by the cutting section 8 and is discharged to the outside of the machine by the rollers of the discharging section 90.

The details of the roll paper storage section 5 and the paper feed section 6 are as follows:
As shown in Figure 2, the roll paper storage section 5 supports the winding shaft 10a%' of the roll paper IO at one end 1 μm in the direction perpendicular to the drawing. A side plate 5a having a spool and this 1tllll
The supporting plate 5b is provided between the plate 58 and has one side of the chassis track (product name) 11 attached to the machine housing side, and the side plate 5a, '7)
It consists of a pair of holding members 5c attached to the lower side and adapted to hold the roll paper 10 of the largest diameter,
As shown in the figure, the leading end of the roll paper is supported so that it can be drawn out from the top of the roll paper, and the roll paper 10 is supported so that it can be drawn out of the comfort 5 via a 7-yarn trunk 11.

On the other hand, the paper feed unit 6 has a side plate 5a Ki=an edged support Ip on the roll paper feeding side of the roll paper storage unit 5.
IiI60, a bracket 61 swingably supported by this support shaft 60, and this bracket 61'7'
: Stopper that locks the free end in place (as shown)
At the bracket 61, the roll paper "q)il=
Tenyon roller 62. feeding roller 63,
Manual cutter 64 and guide plate! It consists of 35.

Tension roller 62c of paper feed section 6, bracket 61
A long hole 611 in the vertical direction in the figure is bored in the
It is pivoted so that it can move up and down, and
) Dead weight, which will be described later, is greater than the force required to rotate the roll paper and feed out the leading edge of the roll paper, and specifically, the roll with the maximum diameter when loaded into the roll paper storage section 5. The force is set to be larger than the force required to manually feed out the leading edge of the paper and have it gripped by the feeding roller 63. In addition, f) the weight of Tennyo 70-La 63,
When manufacturing the fan/mm, the driving force t+jjl driven by the yellow ball roller 71 is set to be approximately equal to or less than the driving force tL, ``C''.

The elongated hole 611 of the bracket 61 has its lowermost part set to a maximum diameter σ). It is prescribed in the place where it can be done (・ru).

Therefore, the tenon roller 70-62 has the maximum diameter of the roll paper 1.
The greatest pressing force is applied to the zero feeding portion.

The feed roller 63 is sandwiched between the feeding path of the roll paper 10 and a lower roller 63a supported on the bracket 61 side.
and a lower roller 631) supported by the 1111 plate 5a ill.
- The contact with the rubber 63b is released. This feeding roller 63 is configured in a 1Y configuration so that either the upper or lower roller can be rotated by manual operation. It can be fed towards the back pressure row 71 of.

The manual cutter 64 is fixed to the end of the bracket 61 in the feeding direction, and is composed of a blade having a rake surface, and cuts the leading end of the roll paper when the bladder 7) (61σ) swings and returns to be described later.

The guide plate 65 is placed between the manual cutter 64 and the feeding path on the side plate 5a and rotates once.
K is fixed.

The bracket 61 of the paper feed section 6 is made to swing when the roll paper IO changes its center or is loaded. To explain the case where roll paper is loaded now, the roll paper storage section 5 is placed in the paper trunk. The bracket 61 is then swung counterclockwise in FIG. 2 to expose the roll paper delivery path as shown in FIGS. 1 and 3.

In this state, the roll paper 10 is fitted with its winding shaft IUa into a spool provided on the side plate 5a of the roll paper storage section 5, and its leading end is fed out to the guide plate 65 of the paper feed section 6 and beyond.

When the bracket 61 swings clockwise in Figure 2 and returns to its original position, the manual cutter 64 cuts off the excess portion of the roll paper 100, and
The upper roller 63a of the roll paper 10 is held between the upper rollers 63a and the lower roller 63b of the roll paper 10, and the tear roller 62 of the tear roller 62 pushes the roll paper roll 10 with the lower roller 63b. As a result, the leading edge of the roll paper is set in a state in which the surface angle with respect to the feeding direction is adjusted.

The roll paper 10 fed in the paper feed section 6 is pushed into C@ via the paper rack 11 of the roll paper storage section 5, and then one of the feed rollers 63 of the paper feed section 6 is manually rotated. As a result, the leading end is brought to the back pressure roller 71 of the image forming section 7!7') and held there.

As described above, the roll paper IO placed in the feeding position by being held by the back pressure rollers is fed by the back pressure rollers 7 being intermittently driven by input signals to the thermal head 70 of the image processing section 7. Sent 4.

When the back pressure roller 71 performs intermittent feeding of the roll paper lO, the tension roller 63 of the paper feed section 6 rises against the pressure bias when feeding the roll paper, in other words, when feeding the roll paper. However, when the feeding is stopped.

A pressing force is applied to the roll paper, and the roll paper 10
The feeding section of the roll paper is held in a state where no slack is generated, and the so-called inertia generated in the roll paper is alleviated, thereby suppressing the load change 1 on the roll paper feeding drive bowl.

Furthermore, the tension roller 63c acts in the same way when loading the roll paper mentioned above and pulls out the leading edge of the roll paper toward the feeding roller 63 of the bracket 61, thereby causing a load at the time of starting feeding after loading the roll paper. Variant fFrI
Suppress +.

(Effects) As is clear from the above persimmon example, when loading roll paper, according to the present invention, each mechanism of the leading edge paper feeding section of the roll paper related to this set is operated. Since the so-called unwinding path can be set apart from the unwinding path p, it is easy to set the roll paper in the loading section, and when setting f), the slack of the roll paper caused by unwinding the roll paper can be avoided. Since this can be prevented, it is possible to eliminate load fluctuations on the feeding and drive rods/structures at the start of feeding the roll paper.

[Brief explanation of drawings]

')ry Figure 1 is a schematic diagram showing an example of a facsimile machine to which an embodiment of the present invention is applied; FIG. 3 is a schematic diagram illustrating the operation of the illustrated embodiment.

Claims (1)

[Claims] 1. A storage section into which a roll of recording paper can be loaded, a pair of feeding rollers that pinch and feed out the roll of recording paper, and a leading edge of the roll of recording paper fed out by the feeding roller. In a roll paper holding device that includes a manual cutter that cuts the paper, and a tension roller that presses the roll of recording paper before it is nipped by the feed roller, the tension roller and one of the pair of feed rollers A roll paper holding device characterized in that a manual counter is simultaneously moved away from a feeding path for rolled recording paper. 2. A patented roll paper holding device characterized in that the biasing force of the tension roller is greater than the force required to pull out the roll of recording paper so that it is clamped by the feeding roller when it is loaded. Equipment〇