JPS6382270A - Recorder - Google Patents

Abstract

PURPOSE:To make a tip of a recording sheet settable to a right position simply and accurately, by installing a device, capable of braking rotation of a roller, in this roller holding the tip of the recording sheet being set. CONSTITUTION:A feed roller 11 and a platen roller 8s are rotated, conveying a recording sheet 4 up to a cuter 9 and a discharge roller pair 10, and a tip of the recording sheet is cut by this cutter 9. In addition, the cut recording sheet 4 is discharged to the outside of a recorder, while the platen roller 8a and the feed roller 11 are rotated in the reverse direction to the said case, and the tip of the recording sheet 4 is rewound up to the vicinity of the tip of a sheet guide 12, making it come into a state of being on standby. A feed roller 14, the platen roller 8a and the cutter 9 are operated whereby the tip of the recording sheet 5 is cut, while the recording sheet tip after cutting is rewound up to the vicinity of a tip of a sheet guide 15, making it come into a state of being on standby. Each rotational quantity of the platen roller 8a and both feed rollers 11 and 14 is controlled whereby the recording sheet tip is made to arrive at an accurate standby position.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a recording device capable of storing a plurality of recording sheet rolls, and in particular, the present invention relates to a recording device capable of storing a plurality of recording sheet rolls, and in particular, the present invention relates to a recording device that can accommodate a plurality of recording sheet rolls, and particularly to This invention relates to a recording device that can prevent the occurrence of.

<Prior Art> Conventional desktop type recording devices such as facsimiles and printers store one sheet roll of a predetermined size made by winding a recording sheet into a roll, and roll out the sheets one after another. It was configured to record received image information while

In addition, recently, a recording apparatus capable of storing two sheet rolls has been developed in order to improve the drawbacks that occur when storing one sheet roll as described above.

<Problems to be Solved by the Invention> However, in the above-mentioned recording device that accommodates two wooden sheet rolls, the leading edge of the recording sheet is pinched between a pinch roller and a drive roller in order to convey it to the recording section. However, since almost no braking is applied to the rotation of these rollers,
When the recording sheet is inserted, the roller rotates unnecessarily, making it difficult to set the leading edge of the recording sheet in the correct position. There is a drawback that the leading edge of the set recording sheet moves during the closing or at the moment of closing, which tends to result in poor setting.

The present invention is a technology that fundamentally improves these conventional drawbacks, and particularly relates to a recording apparatus that can prevent positional deviations from occurring at the leading edge of a recording sheet before and after setting a recording sheet roll.

Means for Solving the Problems> Means of the present invention for solving the above-mentioned problems of the conventional art is to provide a recording device that conveys a recording sheet to a recording section and records an image according to image information. The housing and the second housing can be opened and closed, and the first housing includes a sheet holder that can store a recording sheet wound in a roll, and one sheet holder stores a recording sheet. The second housing is provided with a feed member that conveys the recording sheet stored in the other sheet holder to the recording unit, and the recording head constituting the recording unit is installed in the first housing. A recording device comprising a pair of rotary bodies provided in one of the body or a second housing, a platen provided in the other housing, and the feed member pressed against each other, and the leading edge of the set recording sheet This recording device is characterized in that a rotary body that holds a rotor is provided with means for braking its rotation.

According to the above means, in the recording apparatus according to the present invention, the rollers that hold the leading edge of the set recording sheet are provided with a means that can brake the rotation thereof, so that these rollers do not rotate unnecessarily. It is possible to prevent misalignment of the leading edge of the recording sheet before and after setting the recording sheet.
Furthermore, when the setting is completed, the braking means for the rollers can be automatically released.

<Embodiment> Next, an embodiment of the present invention in which the above means is applied to a facsimile will be described as follows.

The first is a perspective explanatory view of a recording device according to an embodiment of the present invention with the second housing B opened to the second housing, the second is a cross-sectional explanatory view thereof, and the third A cross-sectional explanatory diagram when housings A and B are closed. FIG. 4 is an explanatory diagram showing the relationship between the pinch roller and the drive roller. FIGS. 5 and 6 are an explanatory diagram showing the relationship between the driving gear and the driven gear. 7 to 10 are explanatory diagrams of essential parts showing means for braking the rotation of the roller.

In the figure, a first casing A serving as the main body of the device and a second casing B serving as its lid are pivotally attached to each other by a shaft 1, and are configured to be openable and closable around the shaft 1. Further, a spring 2 is provided on the shaft 1 serving as the center of rotation, and hooks 3 are provided at the open ends of the casings A and B to engage each other. The two casings maintain a predetermined positional relationship when they are closed, and when the hook 3 is released, the spring 2 biases the second casing B to the first casing. It is configured to be opened from the housing A.

Further, the first cylindrical body A is provided with sheet rolls 4a of various sizes in which recording sheets 4 and 5 are wound in a roll shape.

Two drop-in type roll holders 6.7 are provided in parallel, each of which can accommodate the rolls 5a individually.

The recording sheet 4 stored in this roll holder 6.7,
5 is conveyed to the recording section 8 by a selection signal from a control section (not shown), a predetermined image is recorded in the recording section 8, and the recorded recording sheet is transferred to the first housing A. The image is cut from the rear end by a cutter 9 provided in the first casing A, and is ejected from the apparatus by a pair of ejection rollers 10 also provided in the first casing A.

The recording section 8 includes a platen roller 8a that conveys the recording sheets 4 and 5 at a constant speed, and a line that presses against the cough roller 8a and heats the recording sheet made of a thermosensitive sheet according to image information as shown in FIG. A recording head 8b of the type shown in FIG. The platen roller 8a is disposed in the second casing, the recording head 8b is disposed in the second casing B, and both fluids A,
When B is closed, the two are pressed against each other by a pressing spring 8C attached to the back surface of the recording head.

The recording sheets 4 and 5 are each conveyed to the recording section 8 by a pair of feed rollers serving as feed members, and the recording sheets stored in the roll holder 6 (hereinafter referred to as first holder J) that is closer to the recording section 8 are 4 is provided between the first holder 6 of the first housing A and the platen roller 8a, and the feed roller pair 11
A sheet presence/absence detection sensor 13a and a sheet width detection sensor 13b are provided between the sheet guide 12 and the platen roller 8a. Also, a pair of feed rollers 1 conveys the recording sheet 5 stored in the roll holder (hereinafter referred to as "second holder J") 7 that is farther from the recording unit 8.
Reference numeral 4 is provided on the second housing B side between the recording head 8b and the second holder 7, and a sheet presence/absence detection sensor 16a is also provided between the feed roller pair 14 and the recording head 8b via a sheet guide 15. and sheet width detection sensor 16
b is provided.

In addition, the platen roller 8a and the feed roller pair 11
A drive system and a control unit (not shown) that drive and rotate the drive unit are provided in the first casing A.

Note that C in the figure is a document transport system, and the document 18 placed on the document table 17 formed on the top surface of the second housing B and guided on both sides by the document side guides 17a is transferred to the separation roller 19. The sheets are separated one by one by the conveyor roller 20, and conveyed at a constant speed to the left side of the drawing by the conveyor roller 20.
1 to be discharged to a discharge tray 22.

Further, while the original 18 is conveyed, it is irradiated with light by a light source 23 of an original reading system, and the reflected light reaches an image reading element 26 such as a COD through a plurality of mirrors 24 and lenses 25, and the reflected light reaches an image reading element 26 such as a COD. The image is read and
The image signal is configured to be transmitted to a predetermined recording system.

Next, we will explain the operation of the device configured as described above. First, when setting a sheet roll, the hook 3 is released from the hook 3, the second housing B is opened, and the first holder 6 is loaded with a sheet of, for example, A4 size. The roll 4a is stored, the leading edge of the sheet is passed between the pair of feed rollers 11, and the sheet guide 1
Bring it to near the tip of 2. Similarly, the second holder 7
For example, a B4 size sheet roll 5a is stored in the , and the leading edge of the sheet is passed through a pair of feed rollers 14 (14a, 1
4b) and reach near the tip of the sheet guide 15.

After setting the sheet roll as described above, the second housing B is closed and a manual canting operation is performed.

To explain this operation, first, the feed roller 11 and platen roller 8a rotate in the direction of the arrow shown in FIG. . Further, the cut recording sheet 4 is ejected outside =2, and the platen roller 8a and feed roller 11 are rotated in the opposite direction to the above, the leading edge of the recording sheet 4 is rewound to near the leading edge of the sheet guide 12, and the recording sheet 4 is placed in a standby state. do. Next, the leading edge of the recording sheet 5 is cut by operating the feed roller 14, platen roller 8a, and cutter 9 in the same manner as described above, and the leading edge of the cut recording sheet is wound to near the leading edge of the sheet guide 15. Return it to standby mode.

The manual cutting operation cleans the leading edge of the recording sheet 4.5, and by controlling the amount of rotation of the platen roller 8a and feed roller 11.14, the leading edge of the recording sheet is brought to an accurate standby position.

Next, when recording, if A4 size image information is received, the sheet width detection sensor 13b detects that the width of the recording sheet 4 is A4 size, and the feed roller 11 moves in the direction of the arrow in FIG. The recording sheet 4 is rotated to convey the recording sheet 4 to the recording section 8. This record sheet 4
When the leading edge of the recording sheet 4 is conveyed to the pressure contact area between the platen roller 8a and the recording head 8b, the drive of the feed roller 11 is stopped, and at the same time, the platen roller 8a rotates in the direction of the arrow in FIG. 3 to convey the recording sheet 4 at a constant speed. do. In synchronization with this conveyance, the recording head 8b generates heat in accordance with the image information, and the received image information is recorded on the recording sheet 4 by the generated heat. At this time, the feed roller 11 rotates as the recording sheet 4 is conveyed.

When the recording of the image information received as described above is completed, the recording sheet 4 is conveyed and cut until the trailing edge position of the image reaches the cutter 9, and the recorded recording sheet is transferred to the discharge roller 1.
At the same time, the platen roller 8a and the feed roller 11 rotate in the direction opposite to the arrow in FIG.
The leading edge of the recording sheet 4 is rewound to the standby position.

Recording of the A4 size received image is completed as described above.

Note that when the received image is 84 size, the sheet width detection sensor 16b detects that the recording sheet 5 is 84 size, and the feed roller 14, recording section 8, and cutter 9 are moved to the recording sheet 5. It operates in the same manner as above to perform B4 size recording on the recording sheet 5.

Next, in handling a jam, etc., the hook 3 is unlocked and the second housing B is opened. At this time, since the respective feed roller pairs 11 and 14 are provided separately in the first housing A and the second housing B, the recording sheet 4
is separated into the first housing A side, and the recording sheet 5 is separated into the second housing B side. Therefore, when cleaning a jam on one recording sheet, the other recording sheet does not get in the way, and the sheet rolls 4a and 5a can be replaced individually. Furthermore, when the second housing B is opened, the respective sheet rolls 4a and 5a can be viewed at the same time.
It is possible to easily check the remaining roll amount.

Also, when setting the sheet roll, the platen roller 8a and recording head 8b of the recording section 8 are provided separately in the first housing A and the second housing B, and the cutter 9 is provided on the first housing A side. As shown in FIG. 2, for example, the leading edge of the recording sheet 4 to be set is passed between a pair of feed rollers 11, and
By guiding the cutter 9 along the platen roller 8a through the gap between the cutters 9 and between the pair of ejection rollers 10 and out of the apparatus, the recording sheet 4 can be easily and reliably centered. cents can also be easily prevented. The same applies to the case where the platen roller 8a of the recording section 8 is provided in the second casing B and the recording head 8b is provided in the first casing A.

Furthermore, the feed roller pair 11.14 and the platen roller 8a
By providing a drive system such as this in the first casing A, space can be used effectively and the weight of the second casing B can be reduced. The entire structure is made smaller.

Further, in the above embodiment, when sheet rolls of the same size are stored in the holders 6 and 7, one of the recording sheets, for example the recording sheet 4, is used during recording. Then, when recording sheet 4 runs out, sheet 14
The non-sensor 13a may detect this, and the control section may cause the other recording sheet 5 to be used. In this case, the recording sheet 5 has a reserve function.

Further, in the above-described embodiment, the seat holders were provided in parallel to the left and right in the first housing A, but they may be provided in parallel to the top and bottom.

Further, in the above-described embodiment, the platen and the feed member were each configured in the form of a roller, but as another example, a rotating belt suspended from a pulley or the like may be used.

Next, as shown in the figure, the shaft 14a1 of the drive roller 14a
A driven gear 29 is fixed to. Further, the pinch roller 14b has its shaft 14b1 pushed downward by pressing means 31a, 31b constituted by a spring or the like, and is pressed against the drive roller 14a. The drive roller 14a
A motor for driving the motor 27 is attached to the second housing, and a drive gear 28 is attached to the shaft 27a of the motor 27. Gear 28 when both casings A and B are closed
．． 29 are configured to be in contact with each other. The drive roller 14a and the pinch roller 14b are drive roller supporting elongated holes 30b provided in the recording frame 30.
and a round hole 30C, and elongated holes 30a for pinch roller support provided on the left and right sides.

It is rotatably supported by the shaft 30a.

Therefore, in the device of this embodiment, the pinch roller 14b
is pressed by the pressing means 31a, 31b, the pinch roller 14b then presses the drive roller 14a, thereby moving the shaft 14a1 of the drive roller 14a below the elongated hole 30b. There is.

Shaft 14 of drive roller 14a. If the gears 28 and 2 are in contact with the lower end of the elongated hole 30b, as shown in FIG.
A distance between the two axes 9 is established, the driven gear 29 and the drive gear 28 are meshed, and the drive of the motor 27 is transmitted to the drive roller 14a.

As shown in FIG. 5, when the driven gear 29 rotates due to the rotation of the drive gear 28, a force is applied to the driven gear 29 to move it in the direction of arrow R, but the pressing means 31a, 31b
Since the force with which the drive roller 14a is pressed is set to be equal to or greater than the above force, there is no fear that the driven gear 29 will move.

Furthermore, the recording frame 30 of the second housing B is particularly provided with a braking member 32 as shown in FIG. The friction member 32b is provided protrudingly from the spring member 32.
As shown in FIG. 10, due to the action of a, when both cylinders A and B are opened, they are pressed against the shaft 14a1 of the drive roller 14a. Therefore, the rotation of the drive roller 14a is braked by the frictional force exerted by the friction member 32b (the load increases when attempting to rotate).

In the figure, 33 is a part of the main body frame of the first housing A, and the friction member 32b is attached to the roller 14a on this frame 33.
A release member 33a is protruded to release the shaft 14a from the pressure of the shaft 14a, and when the second housing is closed to set it in the first housing, the release member 33a is released as shown in FIG. 1O. The structure is such that by pushing up the friction member 32b, the friction member 32b can release the pressure on the shaft of the roller 14a.

That is, in the recording frame 30 of the second housing B, the braking member 3
2 is provided, and the friction member 32 of this braking member 32
b is moved by the drive roller 1 due to the elastic force of the spring member 32a.
It is configured to press the shaft 14a1 of 4a. On the other hand, the main body frame 33 of the first housing has a tip end of the spring member 32a so as to slightly push up the friction member 32b against the elastic force of the spring member 32a when both the cylinders A and B are closed. A release member 33a is fixedly provided at a position where it comes into contact with the release member 33a.

Therefore, in this embodiment, when both cylindrical bodies A and B are open, the friction member 32b presses the shaft 14a+, and the shaft 1
Since the rotation of the recording sheet 4a+ is prevented, it is possible to prevent positional deviation from occurring at the leading edge of the recording sheet. Also, both cylinders A and B
In the closed state, the release member 33a pushes up the spring member 32a, so the friction member 32b separates from the shaft 14a, and the roller 14a becomes rotatable to convey the recording sheet well.

Next, the setting of recording sheets in the apparatus of this embodiment will be explained. The leading edge of the recording sheet 5 pulled out from the sheet roll 5a is connected to the drive roller 14a and the pinch roller 1.
4b, the driven gear 29 is rotated, and the sheet is passed between the sheet guides 15 and set. At this time, the friction member 32b is pressed against the shaft of the roller 14a to brake the drive roller 14a so that it does not rotate unnecessarily, and in this state, the second housing B is closed to the first housing A and both are set. . Just before this setting is completed, the friction member 32b is released by the release member 33a as described above, and the roller 14
a becomes free.

The force for braking this roller 14a is determined by the friction force of the friction member 32b and the force of the spring member 32a.

If the spring member 32a is made of a material having an appropriate coefficient of friction, the friction member 32b can be omitted.

Further, the same effect can be obtained even if the friction member 32b is pressed by the pinch roller 14b.

<Effects of the Invention> Since the recording device according to the present invention has the structure and operation as described above, the roller holding the leading edge of the recording sheet does not move until the second housing is completely set in the first housing. This prevents the recording sheet from rotating unnecessarily, allowing the leading edge of the recording sheet to be easily and reliably set in the correct position, and furthermore preventing the recording sheet from shifting its position due to some external pressure after centration. Moreover, when the second casing is completely set in the first casing, the braking of the rollers can be automatically released, thereby reducing the required driving torque of the motor. It is something.

[Brief explanation of the drawing]

FIG. 1 shows a first casing A of a recording device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the second housing B, FIG. 3 is a cross-sectional view of both housings A and B when they are closed, and FIG. 4 is a pinch roller and An explanatory diagram showing the relationship with the drive roller, Figures 5 and 6 are explanatory diagrams showing the relationship between the drive gear and the driven gear, and Figures 7 to 10 are main parts showing the means for braking the rotation of the roller. FIG. A is the first housing, B is the second housing, C is the original transport system, D is the reading system, 1 is the shaft, 2 is the spring, 3 is the hook, 4.5 is the recording sheet, 4a and 5a are the sheet rolls, 6 .7 is a roll holder, 8 is a recording unit, 8a is a platen roller, 8b is a recording head, 9 is a cutter, 10 is a pair of discharge rollers, 11
is a pair of feed rollers, 12 is a sheet guide, 13a, 1
6a is a sheet presence sensor, 13b and 16b are sheet width detection sensors, 14 is a pair of feed rollers, 14a is a drive roller, 14b is a pinch roller, 14a+, 1
4b+ is a shaft, 15 is a sheet guide, 27 is a drive motor, 28 is a drive gear, 29 is a driven gear, 30 is a recording frame, 3Qa, 30b is an elongated hole, 31a, 31b are pressing means, 32 is a braking member, 32a is a a spring; 32b is a friction member;
33 is a main body frame, and 32a is a release member.

Claims (1)

[Claims] In a recording device that conveys a recording sheet to a recording section and records an image according to image information, a first housing and a second housing are made openable and closable, and the first housing includes a roll-shaped sheet. A sheet holder capable of storing a wound recording sheet and a feed member for conveying the recording sheet stored in one sheet holder to a recording unit are provided, and the second housing is provided with a sheet holder that can store the recording sheet stored in the other sheet holder. A feed member for conveying the recording sheet to the recording section is provided, and a recording head constituting the recording section is provided in either the first casing or the second casing, and a platen is provided in the other casing. The recording device further comprises a pair of rotating bodies in which the feed member is pressed against each other, and the rotating body that holds the leading edge of the set recording sheet is provided with means for braking its rotation. Recording device.