JPS6351257A - Recorder - Google Patents

Abstract

PURPOSE:To simplify the construction of a recorder by using urging means for paired feed rollers provided in a second casing member also as urging means for pressing a driven gear secured to a shaft of one of the feed rollers against a drive gear. CONSTITUTION:There are provided in a second casing member paired rollers in which a pinch roller 14b is pressed against a drive roller 14a by urging means 31a. The drive roller 14a is secured on a shaft 14c to which a driven gear 29 is fixed. A motor 27 for driving the drive roller 14a is mounted to a first casing member, and a drive gear 28 is secured to a shaft of the motor. When both of the casing members are closed, the drive gear 28 and the driven gear 29 are brought in contact with each other, and as the shaft 14c of the drive roller 14a is positioned downward in a slot 30b due to the urging force applied by the urging means 31a for the pinch roller 14b, the drive gear 28 and the driven gear 29 are meshed with each other. As the force for moving the driven gear 29 in the direction R is set to be smaller than the force pressing the drive roller 14, both gears are held in meshed condition.

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 particularly relates to a feed section that conveys recording sheets stored in a recording sheet holder to a recording section. This is related to the improvement 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.

In addition, recently, in order to improve the drawbacks that occur when storing one sheet roll as described above, a recording device that can store two sheet rolls has been developed (for example, Japanese Patent Application No. 102079/1982). ).

<Problems to be Solved by the Invention> However, in the above-mentioned recording device that accommodates two sheet rolls, there is a pressing means for conveying the recording sheet to the recording section and pressing the pinch roller of the feed section against the drive roller. ,
Each side is configured with a pressing means that presses a driven transmission gear (driven gear) provided on the shaft of the drive roller in a direction that always maintains a predetermined distance between the shafts with respect to the drive transmission gear (driving gear). As a result, there are problems such as a large number of components, making it complicated, requiring time to assemble, making the device larger, and further increasing costs.

The device according to the present invention fundamentally solves these conventional problems, and uses the pressing means for pressing the pinch roller against the drive roller as it is as the pressing means for pressing the driven gear against the drive transmission gear. The objective is to provide a compact recording device with fewer parts.

Means for Solving the Problems> The means of the present invention for solving the above-mentioned problems of the conventional art is to One housing and a 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 a recording sheet that is stored in one of the sheet holders. The second housing is provided with a feed member for conveying the recording sheet stored in the other sheet holder to the recording section, and further includes a recording head constituting the recording section. In the recording apparatus, the feed member is provided in either one of the first case and the second case, and the platen is provided in the other case, and the feed member is constituted by a pair of rollers pressed against each other. This recording device is characterized in that the pressing means for the pair of feed rollers provided in the two housings is also used as the pressing means for a driven gear and a driving gear that are pivotally attached to the shaft of one of the feed rollers.

<Operation> According to the above means, there are provided a means for pressing the pinch roller of the feed section that conveys the recording sheet to the recording section against the drive roller, and a means for pressing the driven gear provided on the shaft of the drive roller against the drive gear. Since it is also used, the overall structure can be made simple and compact, and the number of component parts can be reduced to allow mass production at low cost.

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

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 explanatory view thereof, FIG. 3 is a cross-sectional explanatory view when both cylindrical bodies A and B are closed, and FIG. 4 (A) 5(B) and FIG. 7 are explanatory views showing the relationship between the pinch roller and the drive roller, and FIG. 5 and FIG. 6, respectively.

FIGS. 8 and 9 are side views showing the relationship between the driving gear and the driven gear, respectively.

In the figure, a second casing B, which is a lid, is pivotally attached to a second casing, which is a main body of the apparatus, by a shaft 1, and is 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 lock each other. The second casing B maintains a predetermined positional relationship when it is in the closed state, and when the hook 3 is released, the second casing B is biased by the spring 2 into the second casing B. - configured to be opened from the housing;

Further, in the above-mentioned casing #-, there are 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.

Recording sheet 4 stored in this roll holder 6.7.
Either one of the sheets 5 and 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 recording sheet after recording is provided in the first housing A. The cutter 9 cuts the image from the rear edge,
Similarly, it is configured to be discharged to the outside of the apparatus by a pair of discharge rollers 10 provided in the first casing A.

The recording section 8 includes a platen roller 8a that conveys the recording sheet 4.5 at a constant speed, and a line that presses against the roller 8a and heats the recording sheet made of a heat-sensitive sheet according to image information, as shown in FIG. It is composed of a mold recorder rad 8b. The platen roller 8a is arranged in the first casing A, the recording head 8b is arranged in the second casing B, and both the casings 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 4.5 are each conveyed to the recording section 8 by a pair of feed rollers serving as feed members, and the recording sheets 4 and 5 are stored in a roll holder 6 (hereinafter referred to as "first holder J") that is closer to the recording section 8. 4 is provided between the first holder 6 and the platen roller 8a of the first housing A, 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 "r second holder") 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 is also provided between the feed roller pair 14 and the recording head 8b via a sheet guide 15. 16a 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, in which the document 18 is placed on the document 'R table 17 formed on the top surface of the second casing B, and is guided on both sides by document side guides 17a.
are separated one by one by the separation roller 19, and
It is configured such that it is conveyed at a constant speed to the left side in the drawing by a conveyance roller 20, and is discharged onto a discharge tray 22 by a discharge roller 21. 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 a lens 25. The image is read and the image signal is transmitted to a predetermined recording system.

Next, the operation of the device configured as above will be explained. First, when setting the sheet roll, the hook 3
Release the lock to open the second casing B, and then remove the first holder 6.
A sheet roll 4a of A4 size, for example, is stored therein, and the leading edge of the sheet is passed between a pair of feed rollers 11 to reach near the leading edge of a sheet guide 12. Similarly, a sheet roll 5a of B4 size, for example, is stored in the second holder 7, and the leading end of the sheet is passed between the pair of feed rollers 14 and brought to the vicinity of the leading end of the sheet guide 15.

After setting the sheet roll as described above, the second housing B is closed and the manual cuff 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 canted recording sheet 4 is discharged out of the apparatus, and the platen roller 8a and feed roller 11 are rotated in the opposite direction to the above, and the leading edge of the recording sheet 4 is rewound to the vicinity of the leading edge of the sheet guide 12, and the recording sheet 4 is placed in a standby state. . 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 way as described above at °λ, and the leading edge of the recording sheet after cutting is moved to the sheet guide 15. Rewind it to near the tip of and put it in 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 canted until the trailing edge position of the image reaches the cutter 9, and the recorded recording sheet is delivered to the pair of discharge rollers.
0, the platen roller 8a and 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 B4 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 It operates in the same manner as described 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 casing B is opened. At this time, since the respective feed roller pairs 11 and 14 are provided separately for the first housing and the second housing B, the recording sheet 4 is separated as shown in FIG.
is separated into the first case A side, and the recording sheet 5 is separated into the second case 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 is opened, each of the sheet rolls 4a and 5a can be viewed at the same time, so it is possible to easily determine the remaining roll amount Gli t'2.

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 passing the cutters 9 along the platen roller 8a and through the gap between the cutters 9 and between the pair of ejection rollers 10 and leading them out of the apparatus, it is possible to easily and reliably cent the recording sheet 4. Setting 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 such a drive system in the first casing A, space can be used effectively, and the weight of the second casing B can be reduced, so that the entire device can be 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. When the recording sheet 4 runs out, the sheet presence/absence sensor 13a detects this, and the control section can also cause the other recording sheet 5 to be used. In this case, the recording sheet 5 has a reserve function.

The feed roller pair 14 provided in the second housing B is composed of a drive roller 14a and a pinch roller 14b, as shown in FIGS. 4 to 9.

Next, as shown in the figure, a driven gear 29 is fixed to the shaft 14C of the drive roller 14a. Also, pinch roller 1
4b is pressed against the drive roller 14a by having its shaft 14d pushed downward by pressing means 31a and 31b constituted by a spring or the like.

The motor that drives the drive roller 14a is attached to the first casing A, and the shaft 27a of this motor 27
A drive gear 28 is pivotally attached to. Both housings A and B
The gears 28, 29 are configured to be in contact with each other when closed. The drive roller 14a and the pinch roller 14b are rotatably attached to drive roller support elongated holes 30b and round holes 30c provided in the recording frame 30, and pinch roller support elongated holes 3Qa and 30a provided on the left and right sides. supported.

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 14C of the drive roller 14a below the elongated hole 30b. There is.

When the shaft 14C of the drive roller 14a is 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 second rotation of the driving gear, 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.

If the driven gear 29 and the driving gear 28 do not mesh properly when the cylindrical bodies A and B are mutually closed, and the tips of the gears 28 and 29 collide with each other, the state shown in FIGS. 7 to 9 will occur,
The distance between the axes of the gears 28 and 29 is <L+M as shown in FIG.

In this case, the shaft of the driven gear 29 has moved to the upper end of the elongated hole 30b, so by changing the meshing timing of the gears 28 and 29, the shaft of the driven gear 29 can be moved to the upper end of the elongated hole 30b.
0b, the gears 28 and 29 must be brought into mesh with each other in the normal state shown in FIG. 5, and the distance between the axes of the gears 28 and 29 must be returned to L.

The pressing means 31a, 31b in the above embodiments are not limited to the spring type, but any type of means may be used. Further, the rollers 14a, 14b have elongated holes 30a, 30b.
It is not necessary to directly incorporate the device into the device, but it is naturally possible to incorporate it through a bearing or the like.

<Effects of the Invention> Since the recording apparatus according to the present invention has the above-described configuration and operation, the means for pressing the pinch roller of the feed section that conveys the recording sheet to the recording section against the drive roller can be replaced with the driven gear as is. This can also be used as a pressing means, which simplifies the overall configuration, reduces the number of parts in the device, makes it more compact, and also reduces failures and allows mass production at low cost. It has characteristics such as being able to

[Brief explanation of drawings]

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 explanatory view thereof, FIG. 3 is a cross-sectional explanatory view when both cylindrical bodies A and B are closed, and FIG. 4 (A) . (B) and FIG. 7 are explanatory views showing the relationship between the pinch roller and the drive roller, and FIG. 5 and FIG. 6, respectively. FIGS. 8 and 9 are side views showing the relationship between the driving gear and the driven gear, respectively. A is the first housing, B is the second housing, C is the document transport system, D is the reading system, l is the shaft, 2 is the spring, 3 is the hook, 4.5 is the recording sheet, 4a, 5a are the sheet rolls , 6.7 is a roll holder, 8 is a recording section, 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 sensor without a sheet 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, 14c and 14d are shafts, 15 is a sheet guide, 27 is a drive motor, and 27 is a Motor shaft, 28 is a driving gear, 29 is a driven gear, 30
is a recording frame, 30a. 30b is a long hole, and 31a and 31b are pressing means.

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 A second housing is provided with a sheet holder that can store a recording sheet wound around the sheet holder, a feed member that conveys the recording sheet stored in one sheet holder to the recording section, and a second housing that stores the recording sheet wound in the other sheet holder. A feed member is provided for conveying the recording sheet to the recording section, and a recording head constituting the recording section is provided in either the first casing or the second casing, and the platen is provided in the other casing. Further, in the recording device in which the feed member is constituted by a pair of rollers pressed against each other, the pressing means of the pair of feed rollers provided in the second housing is provided with a driven gear pivoted on the shaft of one of the feed rollers. A recording device characterized in that it is used as a pressing means for both the drive gear and the drive gear.