JPH1072128A - Recording device and recording paper cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constitution which can prevent damage of a device and generation of malfunction even when a recording paper cassette is extracted from a device main unit without drawing an operating lever for lowering down a support shaft pin, in a recorder provided with the support shaft pin for pressing down recording paper so as to vertically move in the recording paper cassette, and provided with a guide rail having a first guide surface guiding this support shaft pin to a low position in a recorder side and a second guide surface extended upward in the rear end thereof. SOLUTION: In a region adjacent to a second guide surface 43b in a rear end part of a guide rail 43, a support surface 43d supporting a tip end of a support shaft pin 26 to be capable of making it slide and a third guide surface 43e tilted so as to continue to a first guide surface 4a are provided, and the device is constituted so that the support shaft pin 26 is slid on the support surface 43d, to be returned to the former first guide surface 43a by the third guide surface 43e, when a recording paper cassette is forcedly drawn out, and the support shaft pin 26 rides across the second guide surface 43b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as a facsimile, a copying machine, a printer, and the like, and more particularly to a method for using a fixed size cut sheet such as A4 or B4 as a recording sheet and setting the recording sheet. The present invention relates to a recording apparatus using a paper cassette. The present invention also relates to a recording paper cassette used in the recording apparatus.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 12, a recording apparatus such as a facsimile apparatus and a printer having a recording paper cassette 1 and an apparatus main body 2 having a cassette housing portion into which the recording paper cassette 1 can be inserted and removed. Used. The recording paper cassette 1 has a bottom plate 3 that supports recording paper (not shown) housed therein and can swing up and down.
Is provided. When the recording paper cassette 1 is mounted at a predetermined position in the apparatus main body 2, the spring pushes up the recording paper via the bottom plate 3 to raise the upper surface of the recording paper. It is configured to press against a paper feed roller provided at a fixed position in the apparatus main body 2.

In this type of recording paper cassette, when the recording paper cassette 1 is pulled out from the apparatus main body 2, it is necessary to separate the recording paper lifted by the bottom plate 3 from the paper feed roller. For this purpose, an operation plate (not shown) is provided below the bottom plate 3 so as to be vertically movable, and the operation plate is pressed down on both sides of the stored recording paper and above the recording paper. The operation claw 4 is attached, and further, an operation lever is provided at a front portion of the recording paper cassette 1 and connected to the operation plate via a link mechanism, and the operation plate is linked by pulling the operation lever forward. The recording paper is pushed down through a mechanism, and the upper surface of the recording paper is pushed down by the claw 4 to separate the recording paper downward from the paper feed roller. When the recording paper cassette is inserted into the apparatus main body, the recording paper is held at a low position so that the support pin 5 can be moved up and down on the side surface of the recording paper cassette 1 in order to prevent the recording paper from hitting a paper feed roller or the like. Protrude, and its support pin 5
Is configured to move up and down in conjunction with the operation plate holding the claw 4 for holding down the recording paper, and the side of the apparatus main body facing the side of the recording paper cassette 1 on which the support pin 5 is provided. At the position, a guide rail 6 (see FIG. 13) for guiding the support pin 5 was provided. As can be clearly understood from FIGS. 13 and 14, the guide rail 6 has a first guide surface 6a for restraining the support pin 5 at a low position until the recording paper cassette 1 is inserted at a predetermined position, and a guide rail 6 inserted at the predetermined position. The second guide surface is formed to extend upward substantially perpendicularly to the back of the first guide surface 6a so as to allow the pivot pin 5 of the recording paper cassette 1 to rise but prevent the recording paper cassette from coming off. 6b, and the entrance portion of the first guide surface 6a was inclined.

With this configuration, the recording paper cassette 1
13 into the cassette storage section of the main body of the apparatus.
As shown in (b), the spindle pin 5 is automatically pushed down along the inclined portion at the tip of the first guide surface 6a, and in conjunction with this, the upper surface of the recording paper is pulled down. 5 is moved along the horizontal first guide surface 6a, the recording paper cassette is inserted in a state where the upper surface of the recording paper is held at a low position, and when the recording paper cassette is inserted to a predetermined position, the support pin 5 is moved to the first guide. When the surface 6a is released from the restraint, the recording paper is pushed up by the bottom plate, pressed against the paper feed roller, and
Rises to a position along the second guide surface 5b as shown in FIG. In this state, FIG.
(A) and (a), since the support pin 5 is located along the second guide surface 6b, even if the recording paper cassette is to be pulled out in that state, the support pin 5 is Surface 6b
The recording paper cassette does not come off accidentally. When pulling out the recording paper cassette, the operation lever provided at the front of the recording paper cassette 1 shown in FIG. 12 is pulled, and the operation plate and the recording paper pressing claw 4 attached thereto are pulled down. As shown in FIGS. 14B and 14B, the spindle pin 5 is pulled down along the second guide surface 6b and guided below the first guide surface 6a, whereby the recording paper cassette is pulled out without any trouble. be able to.

Here, the guide rail 6 is usually made of a resin molded product, and the guide surfaces 6a and 6b are formed on the outer surface of a rib having an appropriate height in order to facilitate molding and to measure the guide rail. The recess 7 was formed inside the rib.

[0006]

However, such a conventional configuration has the following problems.

In a state where the recording paper cassette 1 is mounted at a predetermined position of the apparatus main body 2, as shown in FIGS. 14A and 14A, the support pin 5 is located at a position facing the second guide surface 6 b. And the recording paper cassette 1 without lowering the support pin 5
When the shaft pin 5 is to be pulled out, the pivot pin 5 abuts on the second guide surface 6b and is prevented from moving.
The operator may accidentally try to pull out the recording paper cassette 1 accidentally. In this case, the rib forming the second guide surface 6b is bent and the support pin 5 is moved to the second guide surface 6b.
14C, and entered the recess 7 as shown in FIGS. 14C and 14C, causing a functional failure. In order to prevent this, it is conceivable to increase the strength of the guide rail. In that case, however, the spindle pin 5 and the parts holding the spindle pin 5 and the parts to which the guide rail is attached are damaged, which is not preferable. .

In a drawer type recording paper cassette,
Confirmation of attachment to a fixed position with respect to the apparatus main body has to be judged only by the sense of the operator, and therefore, there has been a case where mounting to the apparatus main body is defective.

A recording paper pressing claw 4 for pressing down the upper surface of the recording paper is attached to an operation plate arranged substantially horizontally below the bottom plate 3, and the operation plate is moved up and down by interlocking with an operation lever and a support pin. Although the operation plate disposed horizontally has low rigidity in the vertical direction, it is necessary to lower the recording paper pressing claw 4 to secure the necessary strength for pressing down the recording paper. As the operation plate, a high-strength sheet metal had to be used, and its thickness was also increased. Therefore, the operation plate was heavy and disadvantageous in cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a first object of the present invention is to make it possible to forcibly pull out a recording paper cassette even if a spindle pin gets over a second guide surface. It is another object of the present invention to provide a recording device capable of guiding the pivot pin again below the first guide surface.

It is a second object of the present invention to provide a recording apparatus capable of giving a feeling of mounting to an operator when a recording paper cassette is mounted at a predetermined position.

A third object of the present invention is to provide a recording paper cassette which can reduce the cost and weight of a mechanism for pushing down the upper surface of the recording paper housed in the recording paper cassette.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention supports an end surface of a pivot pin which has passed over a second guide surface in a region adjacent to the second guide surface. And a third guide surface for guiding the pivot pin to the first guide surface when the pivot pin slides and moves on the support surface. Things. With this configuration, even if the operator forcibly pulls out the recording paper cassette without lowering the support pin, even if the support pin passes over the second guide surface, the support pin slides on the support surface and the third Since the paper is guided by the guide surface and sent to the first guide surface, the recording paper cassette can be pulled out without any trouble.

According to the present invention, in order to solve the above-described problems, a connecting portion between the first guide surface and the second guide surface is formed as a curved surface that is convex downward and rearward. With this configuration, when the recording paper cassette reaches the mounting position,
Since the recording paper cassette is once guided downward and then moved upward, the operator can be given a feeling of mounting the recording paper cassette at a predetermined position.

According to the present invention, in order to solve the above-described problems, a slide plate is provided in the vicinity of the side surface of the recording paper cassette so as to be vertically movable, and the slide plate is moved up and down together with a pair of recording paper pressing levers. It is linked to move. By arranging the slide plate in the vicinity of the side surface of the recording paper cassette in this manner, it is possible to increase the size of the slide plate in the vertical direction, which is the moving direction of the slide plate, and thus to increase the rigidity of the slide plate in the moving direction. For this reason, compared with the conventional case where the horizontally arranged sheet metal operation plate is moved up and down, it is advantageous in terms of strength, the use of resin parts is possible, and cost reduction and weight reduction are achieved. Can be.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present application is directed to a recording apparatus having a recording paper cassette and an apparatus main body having a cassette accommodating portion capable of inserting and removing the recording paper cassette, wherein the recording paper cassette is accommodated. A bottom plate capable of swinging up and down while supporting the recording paper, a spring acting to push up the recording paper through the bottom plate, and a vertically protruding and protruding side surface, which is pushed down. Sometimes, the recording paper on the bottom plate is configured to have a spindle pin that restrains the recording paper at a position that does not interfere with the attachment and detachment of the recording paper cassette, and the apparatus main body has a side surface on the side where the spindle pin of the recording paper cassette is provided. A guide rail is provided at a position to be inserted so as to guide the spindle pin, and the guide rail further lowers the spindle until the recording paper cassette is inserted into a predetermined position. The first guide surface to be bundled and the shaft pin of the recording paper cassette inserted at a predetermined position are allowed to rise, but at a right angle to the back of the first guide surface so as to prevent the recording paper cassette from coming off. A second guide surface formed to extend upward, a support surface formed in a region adjacent to the second guide surface and capable of slidably supporting the tip of the pivot pin, and a position in contact with the support surface. And a third guide surface for guiding the support pin to the first guide surface when the support pin slides on the support surface when the recording paper cassette is pulled out. is there.

According to the present invention, when the recording paper cassette is inserted into the apparatus main body, the first guide surface of the guide rail restrains the support pin at a low position, thereby obstructing the operation of inserting the upper surface of the recording paper. Not restrained in a low position,
When the recording paper cassette is mounted at a predetermined position, the support pin is disengaged from the first guide surface, so that the constraint on the recording paper upper surface is released, the recording paper is pushed up by the bottom plate, and the supply paper provided in the apparatus main body is provided. The support pin is pressed against the paper roller to prepare for paper feeding, and the support pin moves upward along the second guide surface. Then, when the recording paper cassette is inadvertently pulled out, the spindle pin abuts on the second guide surface to prevent the recording paper cassette from coming off. Also,
Even if the spindle pin climbs over the second guide surface in an attempt to forcibly pull out the recording paper cassette, the tip of the spindle pin is guided by the above-described support surface, and then the third guide surface is brought into contact with the first guide surface. The recording paper cassette is pulled out without any trouble.

According to a second aspect of the present invention, there is provided a recording apparatus having a recording paper cassette and an apparatus main body having a cassette accommodating portion in which the recording paper cassette can be inserted and removed. A bottom plate that can swing up and down, a spring that acts to push up the recording paper through the bottom plate, and is provided to be able to move up and down so as to protrude from the side surface, and when pressed down, the bottom plate The apparatus has a spindle pin that restrains the recording paper at a position that does not interfere with the attachment / detachment of the recording paper cassette.
A guide rail is provided at a position where the side of the recording paper cassette on which the support pin is provided is inserted so as to guide the support pin, and the guide rail further holds the recording paper cassette in a predetermined position. The first guide surface for restraining the support shaft at a lower position until the support shaft is inserted into the position, and the support shaft pin of the recording paper cassette inserted at the predetermined position is allowed to rise, but the recording paper cassette can be prevented from coming off. A second guide surface formed so as to extend upward substantially at a right angle to the back of the first guide surface, and a connecting portion between the first guide surface and the second guide surface has a downwardly and rearwardly curved curve. This is a configuration in which a surface is formed.

According to the present invention, as in the first aspect of the present invention, when the recording paper cassette is mounted, the spindle pin is restrained by the first guide surface when the recording paper cassette is mounted, so that the recording paper cassette is placed at a lower position on the recording paper upper surface. The recording paper cassette can be inserted into a predetermined position in the apparatus main body while being held down, and after insertion into the predetermined position, the spindle pin occupies a position facing the second guide surface, thereby preventing the recording paper cassette from coming off. it can. Furthermore, according to the present invention, when the recording paper cassette reaches a predetermined mounting position during the operation of the recording paper cassette apparatus, the support pin is guided by a convex curved surface, so that the recording paper cassette is temporarily moved. The movement is performed so as to be guided downward and then upward, thereby giving the operator a feeling of mounting the recording paper cassette at a predetermined position.

According to a third aspect of the present invention, the recording paper cassette is a box-shaped cassette body having an open upper end, a bottom plate which supports the accommodated recording paper and is capable of swinging up and down, and the recording paper through the bottom plate. And a pair of pawls provided on both sides of the recording paper held on the bottom plate and swingably up and down and capable of engaging with the uppermost surface of the recording paper. A recording sheet pressing lever, a slide plate provided in the vicinity of the side surface on the recording paper feed side so as to be vertically movable, and connected to move up and down together with the pair of recording paper pressing levers, and the cassette A support pin that is provided so as to protrude from the side surface of the main body to the outside and moves up and down in conjunction with the slide plate; an operation lever provided at a front portion of the cassette main body; Plate It is obtained by a structure and a link mechanism is moved downward.

According to the present invention, the spring pushes up the recording paper through the bottom plate when the operation lever and the support pin are not restrained by the above-mentioned structure. In this state, the upper surface of the recording paper is pressed against a paper feed roller provided in the apparatus main body so that paper can be fed. Then, when pulling out the operation lever on the front side to pull out the recording paper cassette, it lowers the slide plate via the link mechanism and pulls down a pair of recording paper pressing levers.
The upper surface of the recording paper is pushed down by a claw provided on the lever for pushing down the recording paper, and is separated from the paper feed roller, so that it can be pulled out without any trouble. Also, when inserting the recording paper, the support pin is restrained at a low position by the guide rail provided on the apparatus main body side, so that the support pin holds the slide plate at the lowered position, and the recording paper Can be restrained at a low position, and the recording paper cassette can be mounted at a predetermined position without any trouble.

[0022]

FIG. 1 is a schematic perspective view showing a recording apparatus (specifically, a facsimile apparatus) according to an embodiment of the present invention.
11 is a recording paper cassette, 12 is the recording paper cassette 11
Is a device main body provided with a cassette storage section in which a cassette can be taken in and out. FIG. 2 is a schematic plan view showing the recording paper cassette 11 partially cut away, and FIGS. 3 (a), 3 (b) and 4 show the recording paper cassette 11 in different states and indicated by an arrow A in FIG. It is the schematic sectional drawing seen in the -A direction, and omits some components in order to make a drawing easy to understand. FIG. 5 is a schematic sectional view of the recording paper cassette 11 as viewed in the direction of arrows BB in FIG. 2, and FIGS. 6 (a) and 6 (b) show the recording paper cassette 1 respectively.
5 is a schematic cross-sectional view of FIG. 5 in the direction of arrows CC and arrow DD, FIG. 7 is a schematic cross-sectional view showing the same part as that of FIG. 5 in a different operation state, and FIGS. ) Respectively indicate the recording paper cassette 11 in the direction of arrow EE in FIG.
It is the schematic sectional drawing seen in F direction.

1 to 8, reference numeral 13 denotes a box-shaped cassette main body having an open upper end, 14 denotes recording paper housed in the cassette main body 13, and 15 supports the recording paper 14 and can swing up and down. The bottom plate. Recording paper cassette 11 of the present embodiment
Is a type in which the recording paper 14 is fed out in a direction perpendicular to the direction of loading and unloading of the recording apparatus. Therefore, the bottom plate 15 is provided so as to be able to swing around an axis extending in the front-rear direction of the cassette body 13. A spring (not shown) is disposed below the bottom plate 15 and acts to push up the recording paper 14 via the bottom plate 15. 17 is
A separating pad 18 provided near the side surface of the recording paper feeding side and movably in an oblique direction is a separating pad 17.
This is a spring that pushes up. With this configuration, when the recording paper cassette 11 is set at a predetermined position in the apparatus main body 12, as shown in FIG. When the separating pad 17 is pressed and the paper feed roller 19 rotates, only the uppermost recording paper 14 can be separated and fed.

In FIGS. 1 to 8, reference numeral 21 denotes a recording paper pressing lever which is provided on both sides of the recording paper held on the bottom plate 15 and which is swingable up and down. A claw 21a that can be engaged with the uppermost surface of the recording paper 14 has a connecting piece 21b at a lower end. A side guide 22 regulates the position of the recording paper 14 in the width direction. A slide plate 24 is provided near the side surface of the cassette body 13 on the side of the recording paper feeding side so as to be vertically movable. The slide plate 24 is a plate-like plate arranged so that the width direction is vertical. A connecting portion 24a is provided at a lower portion of both ends so as to protrude toward the recording paper pressing lever 21. The connecting piece 21b of the recording paper pressing lever 21 is inserted into a groove formed in the connecting portion 24a.
Thus, the slide plate 24 can move up and down together with the pair of recording paper pressing levers 21. Also,
The slide plate 24 has a claw 24c at substantially the center thereof, and as shown in FIG.
When the number 4 is lowered, the claw 24c is caught by the claw 17a formed on the separation pad 17, and the separation pad 17 is pushed down.

A support pin 26 is provided so as to protrude from the side surface of the cassette body 13 and moves up and down in conjunction with the slide plate 24. A support pin 27 allows the support pin 26 to move up and down. The elongated hole 28 formed on the side surface of the cassette body 13 is an operation lever provided at the front portion of the cassette body 13. The operation lever 28 is attached so as to be rotatable around support shafts 28a at both ends. A link mechanism 30 moves the slide plate 24 up and down by turning the operation lever 28.

The link mechanism 30 has an arm 32 connected to the operation lever 28 by a pin 31 and a pair of slide arms 34A, 34B connected to the arm 32 via pins 33A, 33B, respectively. . The pair of slide arms 34A and 34B are rotatably held on side surfaces of the cassette body 13 by fulcrum pins 35A and 35B, respectively. The slide plate 24 is provided with fulcrum pins 35A, 35A.
Long holes 36A and 36B in the vertical direction are formed so as to be able to move up and down without interfering with B. The pair of slide arms 34A, 34B further hold the pivot pins 26, 38, while the slide plate 24 has horizontal elongated holes 39A, 39B into which the pivot pins 26, 38 are inserted.
have. Thus, the slide plate 24 can move up and down together with the support pins 26 and 28. The one support pin 26 protrudes outside from the side surface of the cassette body 13 as described above. A tension spring 40 is connected to the rear end of the arm 32, and holds the arm 32 in a state of being pulled rearward (a state shown in FIG. 6).

With this configuration, when the operating lever 28 is released, the arm 32 occupies the position shown in FIG. 6, whereby the slide plate 24 is located upward.
When the operation lever 28 is pulled toward the user, the arm 32 is pulled forward as shown in FIG. 8, and the pair of slide arms 34A and 34B rotate counterclockwise about the fulcrum pins 35A and 35B. , The pivot pins 26 and 38 held by the slide plate 2
4 can be moved downward. The slide plate 24 pushes down the recording paper 14 via a pair of levers 21 for pushing down the recording paper, and also pushes the separating pad 17 to the pressing force of the spring via the claw 24c. Can be pushed down against. Here, when the slide plate 24 is lowered, the recording paper 14 and the separating pad 17 are pushed down, so that rigidity is required in the vertical direction. However, since the slide plate 24 has a shape that is high in the vertical direction, a resin molded product is used. In this embodiment, a resin molded product is used. Thereby, weight reduction and cost reduction are achieved.

As the range in which the slide plate 24 moves up and down, the operation lever 28 is released,
4, the upper surface of the recording paper 14 and the separating pad 17 are pressed against the paper feed roller 19 without any trouble (at this time, the recording paper pressing lever 21 is pressed) as shown in FIG.
Is located above the recording paper 14).
When the slide plate 24 is pressed down by operating the operation lever 28, as shown in FIG.
4 and the separating pad 17 are both lowered,
(See FIG. 4) so as not to interfere with the operation of attaching and detaching the recording paper cassette 11 to and from the apparatus main body.

Next, as shown in FIG. 9, a side surface of the recording paper cassette 11 on which the support pin 26 is provided is inserted into a cassette storage portion of the apparatus main body 12 for storing the recording paper cassette 11. A guide rail 43 is provided at a position to guide the pivot pin 26. The guide rail 43 serves as a first guide surface 43a for restraining the support pin 26 at a low position until the recording paper cassette 11 is inserted into a predetermined position.
And the support pin 11 of the recording paper cassette inserted at a predetermined position.
A second guide surface 43b formed so as to extend upward substantially at a right angle to the back of the first guide surface so that the recording paper cassette can be prevented from falling out of the recording paper cassette.
As shown in FIGS. 10 and 11 in an enlarged manner, a convex curved surface 43c is formed downward and rearward at a connection portion between the first guide surface 43a and the second guide surface 43b. Further, the area adjacent to the second guide surface 43b is formed lower than the first guide surface 43a provided in the other area, and the tip of the pivot pin 26 can be supported and slid at that position. A support surface 43d is formed, and an oblique third guide surface 43e is formed at a position in contact with the support surface 43d so as to be connected to the first guide surface 43a. This third guide surface 43e
When the support pin 26 slides on the support surface 43d when the recording paper cassette is pulled out, the support pin 2
6 is guided to the first guide surface 43a. Here, the support surface 43d is arbitrary as long as it can support and slide the tip of the pivot pin 26, and may be simply a flat surface, a large number of grooves, holes, or the like. However, in the present embodiment, the support surface 43a is constituted by a mesh surface formed of grid-like ribs. The support surface 43a of this configuration has a large number of ribs, thereby eliminating the thick part, so that not only is the moldability good and light when formed by resin molding, but also the tip of the support pin 26 Is preferred because of its good slidability.

The recording apparatus and the recording paper cassette 1 having the above-described configurations.
1 will be described below. In a state where the recording paper cassette 11 is pulled out of the apparatus main body 12, FIG.
As shown in (a), the bottom plate 15 and the separating pad 17 are each pushed up by a spring, and as shown in FIG. 6, the arm 32 is pulled back by the spring 40, and the slide plate 24 and the support pin 26 are in the upper position. Occupy. When the recording paper cassette 11 is inserted into the cassette accommodating portion of the apparatus main body 12 in this state, the support pin 26 is moved to the first guide surface 43 of the guide rail 43 as shown in FIG.
The recording paper cassette 11 is inserted in a state where the recording paper cassette 11 is pressed down by a and is restrained at the lower position. Therefore, the slide plate 24 is moved by the support pin 26 as shown in FIG.
Is pushed down to the state shown in FIG.
And the separating pad 17 is also held in a state of being pushed down. Then, the recording paper cassette 11 is inserted into a predetermined position, and the recording paper 14 and the separating pad 17 are
9A, the support pin 26 is moved to the first guide surface 43 of the guide rail 43 as shown in FIG.
After passing through the rear end of “a”, the restraint by the first guide surface 43a is released. Therefore, the arm 32 is pulled back by the spring 40 as shown in FIG.
4 moves upward, and the restraint of the recording paper 14 and the separating pad 17 is also released. Thus, as shown in FIG. 4, the recording paper 14 is pushed up by the bottom plate 15 and pressed against the paper feed roller 19, and the separating pad 17 is also pushed up by the spring and pressed against the paper feed roller 19 to prepare for paper feeding. Complete.

In the recording paper cassette insertion operation, when the recording paper cassette 11 reaches the mounting position,
6 moves along the curved surface 43c (see FIG. 10) at the rear end of the guide rail 43, so that the support pin 26 is once guided downward, and therefore the recording paper cassette 11 is also temporarily guided downward, and then upward. Make a movement that will be guided to. Thereby, the operator can feel that the recording paper cassette has been mounted at the predetermined position, and can have a sense of security.

After the recording paper cassette 11 is mounted at a predetermined position with respect to the apparatus main body 12, the support pin 26 is moved to the position shown in FIG.
11A, the guide rail 43 occupies a position along the second guide surface 43b. For this reason,
Even if the recording paper cassette 11 is inadvertently pulled out, it does not come off because the support pin 26 abuts on the second guide surface 43b. When pulling out the recording paper cassette 11,
As shown in FIG. 8, the slide plate 24 is lowered by pulling the operation lever 28 at the front of the recording paper cassette 11 and pulling the arm 32 toward the front, and the recording paper 14 and the separating pad 17 are fed to the paper feed roller. Pull down to a position away from 19. At the same time, the support pin 26 also moves downward to a position where it is guided by the first guide surface 43a (see FIG. 9). In this state, the recording paper cassette 11 may be pulled out.

By the way, when an unskilled operator operates, without pulling the operation lever 28 of the recording paper cassette,
The recording paper cassette 11 may be pulled out. In this case, usually, as shown in FIG.
The hook 6 is hooked on the second guide surface 43b to prevent it from slipping out. However, if it is forcibly pulled out, the pivot pin 26 may get over the second guide surface 43b. However, in this case, as shown in FIG. 11 (b), it is possible to support and slide the end surface of the pivot pin 26 which has passed over the second guide surface in a region adjacent to the second guide surface 43b. Since the support pin 43 slides on the support surface 43d because it has a suitable support surface 43d, it hits the third guide surface 43e, and moves along the third guide surface 43e. As shown in c), it is returned to the first guide surface 43a. Thus, the recording paper cassette 11 can be pulled out without damaging the support pin 26 and its related components, the guide rail 43, and the like, and trouble can be avoided.

In the above embodiment, the judgment pad 17 is used.
Although the recording paper cassette 11 of the type provided with is used, it is needless to say that the present invention is not limited to this configuration, and is applicable to a recording paper cassette of a type not provided with the separating pad.

[0035]

As is apparent from the above description, the present invention is applicable to the guide rail provided on the apparatus main body for operating the pivot pin of the recording paper cassette, in the area adjacent to the second guide surface. Forming a support surface that can slide by supporting the end surface of the spindle pin that has passed over the second guide surface,
By providing a third guide surface for guiding the pivot pin to the first guide surface when the pivot pin slides and moves on the support surface, the second guide surface is usually provided with the pivot pin. By restraining the recording paper cassette, the recording paper cassette can be prevented from coming off, and even if the operator forcibly pulls out the recording paper cassette without lowering the spindle pin, and the spindle pin gets over the second guide surface, Pulling out the recording paper cassette without causing any damage to the guide rails, the spindle pins, and related parts, since the spindle pins slide on the support surface and are guided by the third guide surface to return to the first guide surface. It has the effect that it can be done.

Further, according to the present invention, the connecting portion between the first guide surface and the second guide surface of the guide rail provided to operate the support pin of the recording paper cassette on the apparatus main body is projected downward and backward. The recording paper cassette is inserted into the main body of the apparatus, and when the recording paper cassette reaches a predetermined mounting position, the recording paper cassette is once guided downward, and then moved upward. As a result, it is possible to give the operator a feeling of mounting the recording paper cassette at a predetermined position.

Further, according to the present invention, in a recording paper cassette, a slide plate connected to the pair of recording paper pressing levers is moved to move the pair of recording paper pressing levers up and down. Since the slide plate can be moved up and down in the vicinity of the side surface, the size of the slide plate can be increased in the vertical direction, which is the direction of movement. Thus, there is an effect that cost reduction and weight reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a recording apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a recording paper cassette 11 used in the recording apparatus shown in FIG.

3A and 3B are schematic cross-sectional views of the recording paper cassette 11 shown in FIG. 2 in different states and viewed in the direction of arrows AA in FIG.

4 is a schematic cross-sectional view of the recording paper cassette 11 shown in FIG. 2 in a state where the recording paper cassette 11 is mounted in the apparatus main body and viewed in the direction of arrows AA in FIG.

5 is a diagram showing a recording paper cassette 11 shown in FIG.
Schematic sectional view seen in the -B direction

FIGS. 6A and 6B respectively show a recording paper cassette 1;
5 is a schematic cross-sectional view of FIG. 5 in the direction of arrows CC and the direction of arrows DD.

FIG. 7 is a schematic sectional view showing the same portion as FIG. 5 in an operation state different from that of FIG. 5;

FIGS. 8A and 8B respectively show a recording paper cassette 1;
1 is a schematic cross-sectional view when viewed in the directions of arrows EE and FF in FIG. 7.

FIGS. 9A and 9B are schematic side views illustrating a positional relationship between a guide rail provided on a side of a cassette housing portion of the apparatus main body and a support pin of a recording paper cassette;

FIG. 10 is an enlarged front view of the end of the guide rail.

FIGS. 11A, 11B, and 11C are schematic perspective views illustrating movement of a pivot pin at an end of a guide rail.

FIG. 12 is a schematic perspective view of a conventional recording apparatus.

FIGS. 13A and 13B are schematic side views illustrating a positional relationship between a guide rail provided on a side surface of a cassette housing portion of the apparatus main body and a support pin of a recording paper cassette in a conventional recording apparatus.

FIGS. 14A, 14B, and 14C are schematic front views (a), (b), and (c) illustrating the movement of a pivot pin at the end of a guide rail in a conventional recording apparatus. Schematic perspective views corresponding to the above (A), (B) and (C), respectively.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 recording paper cassette 12 apparatus main body 13 cassette main body 14 recording paper 15 bottom plate 17 separating pad 18 spring 19 paper feed roller 21 recording paper pressing lever 21a claw 24 slide plate 26 support pin 27 long hole 28 operating lever 30 link mechanism 32 Arm 34A, 34B Slide arm 35A, 35B Support pin 40 Tension spring 43 Guide rail 43a First guide surface 43b Second guide surface 43c Curved surface 43d Support surface 43e Third guide surface

Claims (3)

[Claims] 1. A recording apparatus comprising: a recording paper cassette; and an apparatus main body having a cassette storage portion into and out of which the recording paper cassette can be inserted and removed. A bottom plate capable of swinging, and a spring acting to push up the recording paper through the bottom plate;
The apparatus main body includes a support pin that is provided so as to protrude from a side surface and is movable vertically, and that when pressed down, restrains a recording sheet on the bottom plate at a position where the recording sheet does not interfere with attachment and detachment of a recording sheet cassette. Has a guide rail provided to guide the spindle pin at a position where the side surface of the recording paper cassette on which the spindle pin is provided is inserted, and the guide rail is provided with the recording rail. A first guide surface for restraining the support pin at a low position until the paper cassette is inserted into a predetermined position; and a support pin for allowing the lift of the support pin of the recording paper cassette inserted at the predetermined position but preventing the recording paper cassette from falling out. A second guide surface formed so as to extend upward substantially at a right angle to the back of the first guide surface, and formed in a region adjacent to the second guide surface, and slide the tip of the fulcrum pin. Can be supported And a support surface formed at a position in contact with the support surface, and guides the support pin to the first guide surface when the support pin slides and moves on the support surface when the recording paper cassette is pulled out. A recording device having a third guide surface. 2. A recording apparatus comprising: a recording paper cassette; and an apparatus main body having a cassette storage portion into and out of which the recording paper cassette can be inserted and removed. A bottom plate capable of swinging, and a spring acting to push up the recording paper through the bottom plate;
The apparatus main body is provided so as to protrude from the side surface and to be movable up and down, and when pressed down, restrains the recording paper on the bottom plate at a position where the recording paper does not interfere with attachment and detachment of the recording paper cassette. Has a guide rail provided to guide the spindle pin at a position where the side surface of the recording paper cassette on which the spindle pin is provided is inserted, and the guide rail is provided with the recording rail. A first guide surface for restraining the support pin at a low position until the paper cassette is inserted into a predetermined position; and a support pin for allowing the lift of the support pin of the recording paper cassette inserted at the predetermined position but preventing the recording paper cassette from falling out. A second guide surface formed so as to extend upward substantially at a right angle to the back of the first guide surface, and a connection portion between the first guide surface and the second guide surface is formed in a lower portion and a rear portion. To form a convex curved surface Recording apparatus characterized Rukoto. 3. A box-shaped cassette main body having an open upper end, a bottom plate capable of swinging up and down while supporting the accommodated recording paper, and a spring acting to push up the recording paper via the bottom plate; A pair of recording paper pressing levers provided with pawls which are provided on both sides of the recording paper held on the bottom plate and are swingable up and down and which can engage with the uppermost surface of the recording paper,
A slide plate is provided near the side of the recording paper feeding side so as to be able to move up and down, and is connected to move up and down together with the pair of recording paper pressing levers. A pivot pin that moves up and down in conjunction with the slide plate, an operation lever provided at the front of the cassette body, and a link mechanism that moves the slide plate up and down by turning the operation lever. Recording paper cassette.