JPH1120961A - Paper feeding cassette loading/unloading device and paper feeding cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of preventing the easy movement of a cassette during setting a recording paper sheet and smoothly pulling out the cassette. SOLUTION: A step part 8 is provided in a deep side with respect to a roller 10 provided in a lower guide 7, a recess 9 is provided in the deep side of the step part 8, the portion of tan upper guide 5 located slightly toward an insertion port 4a side above the recess 9 is formed to be peaked and a stopper section 6 is formed in the peaked part, and for loading, a stop part 3 goes over the step part 8 by pushing in a roller 2 while pressing the same to the upper guide 5, and a paper feeding cassette 1 is smoothly laded on an image recording device main body 4 by the rotations of the rollers 2 and 10. Further, when the paper feeding cassette 1 is pulled out for replenishing a recording paper sheet, the upper roller 2 is engaged with the stopper section 6, the step part 3 is simultaneously engaged with the step part 8 and thus the movement of the feed cassette 1 in a pulling-out direction is regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet cassette attaching / detaching apparatus for attaching a sheet cassette to an image recording apparatus, and a sheet cassette.

[0002]

2. Description of the Related Art In a conventional image recording apparatus, when a paper cassette is mounted on a main body of an image recording apparatus, the paper cassette is aligned with a guide portion in the main body of the image recording apparatus, and is mounted by being pushed in a horizontal direction. Many methods are adopted.
Further, in setting the recording paper, there is a method of removing and reloading the paper feed cassette or a method of setting the recording paper after pulling out only a part of the paper feed cassette and mounting the recording paper.

As a conventional technique of this kind, there is a technique described in Japanese Utility Model Laid-Open No. 5-68972 and Japanese Patent Laid-Open No. 6-144598.

Japanese Utility Model Laid-Open No. 5-68972 discloses a configuration in which a fence movable in a width direction and a length direction is provided to accommodate a plurality of types of recording paper.

Japanese Patent Laid-Open Publication No. Hei 6-144598 discloses a configuration in which a slidable slide portion is provided on a cassette body and the slide portion is moved in accordance with the size of cut paper.

[0006]

However, in the case of the system in which only a part of the paper cassette is pulled out, if the mobility of the paper cassette relative to the image recording apparatus main body is improved, the paper cassette is replenished for replenishing the recording paper. When the paper cassette is pulled out of the main body of the image recording device, it takes time to re-attach it, or the paper cassette moves easily into the main body of the image recording device while setting the recording paper. It may be extremely bad.

In the technique described in Japanese Utility Model Laid-Open No. 5-68972,
Even if the recording paper has a small size, the size of the cassette itself does not change, so that a large space is required for installation. Further, in the technique described in JP-A-6-144598, a structure for fixing the slide portion to the cassette body becomes complicated.

The present invention solves the above-mentioned problems and prevents the cassette from easily moving when setting the recording paper, and also realizes a paper feed cassette attaching / detaching apparatus which realizes smooth pulling out and mounting of the cassette. It is an object to provide a paper feed cassette.

[0009]

According to the present invention, there is provided an image recording apparatus in which a paper feed cassette for setting recording paper in a state of being partially pulled out from the image recording apparatus main body is attached to and detached from the image recording apparatus main body. In the paper cassette detachably mountable device, a roller for moving the inside of the image recording apparatus main body is provided in the paper cassette, and the paper cassette is set at a position where recording paper is set in the image recording apparatus main body. The image recording apparatus body is provided with a stopper for maintaining the image quality. Further, in the paper feed cassette attaching / detaching device, a roller for moving the paper feed cassette inside the image recording apparatus main body is provided, and the paper feed cassette is set at a position where a recording sheet is set in the image recording apparatus main body. Is provided on the paper feed cassette. With such a configuration, when the sheet cassette is pulled out, the movement of the cassette body is suppressed by the stopper at a predetermined position, so that the sheet cassette can be easily moved when replenishing recording paper.

[0010] A first cassette section inserted into the main body of the image recording apparatus, a second cassette section slidably mounted on the first cassette section, and a side fence abutting on a side of the recording paper to be set. A paper cassette that is capable of storing a plurality of types of standard-size recording paper by changing the positions of the side fence and the second cassette unit.
An engagement portion is provided which engages with the first cassette portion and the second cassette portion and regulates movement of the second cassette portion in the sliding direction. With such a configuration, in addition to the function of restricting the movement of the recording paper in the width direction, the side fence can have a function of restricting the movement of the second cassette unit in the sliding direction.

Also, a first cassette section to be inserted into the main body of the image recording apparatus, a second cassette section slidably installed in the first cassette section, and a recording paper set and set in the first cassette section. And a dustproof cover rotatably mounted on the second cassette section, and a plurality of types of side fences are provided by changing the positions of the side fence and the second cassette section. A paper cassette capable of accommodating recording paper of a fixed size, wherein said cover has an engaging portion which engages with a concave portion formed in said side fence, and said side fence and said second cassette are provided. Only when the position of the portion matches the type of recording paper, engages the engaging portion and the concave portion,
The image recording apparatus may be inserted into the main body. With such a configuration, the cover provided on the second cassette unit engages with the side fence provided on the first cassette unit, thereby restricting the movement of the second cassette unit in the sliding direction, and at the same time, preventing the recording paper from moving. The cover is engaged with the side fence only when the second cassette portion and the side fence are located at positions corresponding to the length direction and the width direction, so that the movement of the recording paper in the width direction can be reliably restricted.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an explanatory view showing a main portion of a paper feed cassette and an image recording apparatus to which the paper feed cassette is mounted according to a first embodiment of the present invention. FIG. 1 is a paper feed cassette, 2 is a roller provided above and below a side end of the paper feed cassette 1 in the mounting direction, and 3 is a substantially right angle provided on the lower surface of the paper feed cassette 1. The triangular step portion, 4 is the image recording device body (hereinafter, referred to as
5 is an upper guide for guiding the upper portion of the sheet cassette 1, 6 is a concave stopper formed on the upper guide 5, 7 is a lower guide for guiding the lower portion of the sheet cassette 1, 8 is a substantially right-angled triangular step provided on the lower guide 7, 9 is a recess provided on the lower guide 7,
Reference numeral 10 denotes a roller provided in the lower guide 7 in the vicinity of the insertion slot 4a of the sheet cassette 1 in the apparatus main body 4.

A step 8 is provided on the back side of the roller 10 provided on the lower guide 7, and a recess 9 is provided on the back side of the step 8. Further, the stopper 6 is located slightly above the recess 9 on the side of the insertion opening 4a. The guide surface of the upper guide 5 from the stopper 6 to the insertion opening 4a is formed as a slope such that the insertion opening 4a expands from the stopper 6 toward the insertion opening 4a. Upper guide 5
Is formed in a mountain shape, and the distance between the upper guide 5 and the lower guide 7 on the back side of the stopper 6 is substantially constant.

Then, by pushing the rollers 2 and 2 against the upper guide 5 and pushing it in, the step 3 moves over the step 8 and
The paper feed cassette 1 is smoothly mounted on the apparatus main body 4 by the rotation of the rollers 2, 2 and the roller 10. Further, when the paper feed cassette 1 is pulled out when replenishing the recording paper, the paper feed cassette 1 moves according to the guides by the upper guide 5 and the lower guide 7. Then, the roller 2 slightly lowers downward due to the recess 9, but rises again and the upper roller 2 engages with the stopper portion 6. At the same time, the step 3 is engaged with the step 8, and the movement of the sheet cassette 1 in the pull-out direction is restricted. When removing the paper feed cassette 1, the upper roller 2
Can be removed by lifting the paper feed cassette 1 so as to rotate around the center, releasing the engagement between the step portions 3 and the step portion 8 and pulling out.

With this construction, when the paper feed cassette 1 is pulled out when replenishing the recording paper, the upper roller 2 is engaged with the stopper portion 6, so that the paper feed cassette 1 is 4 is prevented from moving into
The engagement between the stepped portion 3 and the stepped portion 8 prevents the sheet feeding cassette 1 from being detached from the apparatus main body 4 and improves the operability when setting the recording paper.

In the first embodiment, the rollers 2 and 2 are provided on the sheet cassette 1 and the stopper 6 is provided on the apparatus main body 4. On the contrary, the rollers 2 and 2 are provided on the apparatus main body 4.
The same effect can be obtained by a configuration in which the paper feed cassette 1 is provided with a stopper portion formed of a concave portion in which the rollers 2 and 2 are engaged.

FIG. 3 is a plan view showing components of a paper feed cassette according to a second embodiment of the present invention, and FIG. 4 shows a configuration of the paper feed cassette of FIG. 3 and a state when letter-size recording paper is set. FIG. 5 is a side view of FIG. 4, FIG. 6 is a plan view showing a state when A4 size recording paper is set, FIG. 7 is a side view of FIG. The first cassette section 21 to be mounted is a second cassette section slidably mounted on the first cassette section 20, and 22 is the first cassette section.
A letter hole provided on the side of the end on the mounting direction side of 20, 23
Is a hole for A4 paper provided next to the hole 22 for letter, 24 is a common hole for letter provided behind the hole 22 for letter,
Reference numeral 25 denotes a common hole portion for A4 paper provided adjacent to the letter common hole portion 24, and reference numeral 26 denotes a second cassette portion 21 formed of a flat surface formed one step lower at the end of the first cassette portion 20 on the drawing direction side. The mounting portion 27 indicates slide grooves provided on both sides of the mounting portion 26. Here, the distance between the letter hole 22 and the letter common hole 24, and the A4 paper hole 23 and the A4 paper common hole 25
Are set to be equal.

Reference numeral 28 denotes a letter hole provided on the side of the second cassette portion 21, reference numeral 29 denotes an A4 paper hole provided on an end of the second cassette portion 21 on the mounting direction side, and reference numeral 30 denotes a first hole. A slide portion 31 compatible with the mounting portion 26 of the cassette portion 20 and slide protrusions 31 provided on both sides of the slide portion 30 are shown. And the slide groove
The second cassette unit 21 is mounted on the first cassette unit 20 by fitting the slide projection 31 into the 27 and pushing it in that state. When the second cassette section 21 is completely mounted on the first cassette section 20, the letter hole 28 and the letter common hole 24 overlap to form a through hole, as shown in FIG.

4 and 5, reference numeral 32 denotes a side fence, reference numeral 33 denotes a projection that fits in the letter hole 22, and reference numeral 34 denotes a projection that fits in the letter common hole 24.
The distance between 34 and letter hole 22 and letter common hole 24
Equal to the distance between

When setting a letter-size recording sheet, the second cassette section 21 is completely pushed into the first cassette section 20, and the projections 33 and 34 are fitted into the letter holes 22 and the letter holes 28, respectively. Thus, the side fence 32 is set. At this time, as shown in FIG. 5, the projections 34 are also fitted in the common holes 24 for letters.

When setting A4 size recording paper, as shown in FIG. 6, the second cassette portion 21 is pulled out of the first cassette portion 20, and the A4 paper hole portion 29 and the A4 paper common hole portion 25 are inserted. Then, the side fence 32 is set by fitting the projections 33 and 34 into the A4 paper hole 23 and the A4 paper hole 29. Again, FIG.
As shown in FIG. 7, the projection 34 is also fitted in the letter common hole 24.

With this configuration, the projection of the side fence serves as a stopper between the first cassette unit and the second cassette unit when the paper cassette is inserted into or removed from the apparatus main body. Second to
The cassette unit is prevented from easily sliding.

FIG. 8 is a plan view showing the configuration of a sheet cassette according to a third embodiment of the present invention and a state in which a letter-size recording sheet is set, and FIG. 9 is a side view of FIG.
11 is a plan view showing a state in which A4 size recording paper is set, FIG. 11 is a side view of FIG. 10, 40 is a first cassette unit to be mounted on the apparatus main body 1, and 41 is a slide to the first cassette unit 40. A second cassette part 43, which is installed so as to be capable of being mounted, a side fence 43, and a hole 44 formed on a side part of the first cassette part 40 for mounting the side fence 43 slidably in the width direction of the recording paper; Reference numeral 45 denotes a mounting portion of the second cassette portion 41 which is formed at the center of the end of the first cassette portion 40 in the pull-out direction and is formed by a plane one step lower than the surrounding plane. Reference numeral 46 denotes a mounting portion of the second cassette portion 41. The slide part 47 provided at the center part on the side of the first direction and adapted to the mounting part 45 of the first cassette part 40 has a second cassette part 41 having the other end so that one end can be moved up and down.
A cover rotatably installed at the end in the mounting direction, 48 is an L-shaped engaging portion formed at one end of the cover 47, and 49 is a position where the side fence 43 corresponds to a letter-size recording paper. The cover 47 is closed and the second cassette portion 41 is closed.
When the side fence 43 is located at a position corresponding to A4 size recording paper, the cover 47 is closed to cover the second cassette portion 41 when , A concave portion engaging with the engaging portion 48 is shown.

When setting a letter-size recording sheet, the second cassette section 41 is completely pushed into the first cassette section 40, and the side fence 43 is slid. At this time,
Since the width of the A4 size recording paper is 210 mm and the width of the letter size recording paper is 216 mm, the side fence 43 is moved to the side of the first cassette unit 40. Then, the cover 47 is closed, the engaging portion 48 is engaged with the concave portion 49, and the device is mounted on the apparatus main body.

To set A4 size recording paper, the second cassette 41 is pulled out from the first cassette 40, and the side fence 43 is slid from the center of the second cassette 41. Then, the cover 47 is closed, the engaging portion 48 is engaged with the concave portion 50, and the cover 47 is mounted on the apparatus body. At this time, if the position of the side fence 43 is correct, it can be attached to the apparatus main body as shown in FIG. 12, but if the position of the side fence 43 is not correct, the engaging portion 48 engages with the concave portion 50 as shown in FIG. Instead, the cover 47 rides on the side fence 43, and the cover 47 interferes with the insertion opening 4a of the apparatus main body 4 and cannot be mounted.

With this configuration, the movement of the second cassette portion 41 in the sliding direction and the movement of the recording paper in the width direction can be reliably restricted. This can be prevented beforehand, and the reliability can be improved.

[0028]

According to the present invention as described above, it is possible to smoothly mount / draw out the paper feed cassette by rotating the rollers, and furthermore, it is possible to feed the paper when setting the recording paper. Since the paper cassette can be prevented from easily moving, the setting of the recording paper can be improved.

Further, by providing the side fence with a stopper function for preventing the second cassette unit from moving with respect to the first cassette unit, the number of parts can be reduced.

Further, since the movement in the width direction with respect to the length direction can be surely restricted in accordance with the size of the recording paper, it is possible to prevent the recording paper from being transported poorly due to this, thereby improving the reliability. Can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a main configuration of a sheet cassette and an image recording apparatus to which the sheet cassette is mounted according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state when recording paper is supplied to a paper feed cassette.

FIG. 3 is a plan view illustrating components of a sheet cassette according to a second embodiment of the present invention.

FIG. 4 is a plan view showing the configuration of the paper feed cassette shown in FIG. 3 and a state when letter-size recording paper is set.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a plan view showing a state when A4 size recording paper is set.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a plan view illustrating a configuration of a paper feed cassette according to a third embodiment of the present invention and a state when letter-size recording paper is set.

FIG. 9 is a side view of FIG.

FIG. 10 is a plan view showing a state when A4 size recording paper is set.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a side view showing a state where the sheet cassette shown in FIG. 10 is mounted on the image recording apparatus main body.

FIG. 13 is a side view illustrating a state where the cover interferes with the insertion opening of the image recording apparatus main body and the sheet cassette cannot be mounted.

[Explanation of symbols]

1: paper cassette, 2, 10: roller, 3: step, 4
... main body of image recording device (main body of device), 4a ... insertion slot,
... Upper guide, 6 ... Stopper part, 7 ... Lower guide,
8 ... stepped part, 9 ... recessed part, 20, 40 ... first cassette part,
21, 41 ... second cassette part, 22, 28 ... letter hole,
23, 29 ... hole for A4 paper, 24 ... common hole for letter,
25: Common hole for A4 paper, 26, 45: mounting part, 27: slide groove, 30, 46: slide part, 31: slide protrusion,
32, 43 ... side fence, 33, 34 ... projection, 44 ... hole, 47 ... cover, 48 ... engagement part, 49, 50 ... recess.

Claims (4)

[Claims] 1. A sheet cassette attaching / detaching apparatus in which a sheet cassette for setting recording paper in a state where a part of the sheet is pulled out from an image recording apparatus main body is detachably mounted to the image recording apparatus main body. A roller for moving the inside of the image recording apparatus main body, and a stopper for maintaining the sheet cassette at a position where a recording sheet is set in the image recording apparatus main body is provided on the image recording apparatus main body. Characteristic paper feed cassette attachment / detachment device. 2. A paper cassette attaching / detaching apparatus in which a paper cassette for setting recording paper in a state where a part of the image recording apparatus is pulled out from the image recording apparatus main body is detachably mounted to the image recording apparatus main body. A roller for moving the paper cassette inside the main body, and a stopper for maintaining the paper cassette at a position where the recording paper is set with respect to the image recording apparatus main body is provided on the paper cassette. Characteristic paper feed cassette attachment / detachment device. 3. A first cassette section inserted into the image recording apparatus main body, a second cassette section slidably installed in the first cassette section, and installed in the first cassette section,
A side fence is provided for abutting the side of the recording paper to be set, and by changing the positions of the side fence and the second cassette portion, it is possible to store a plurality of types of standard-size recording paper. A sheet cassette, wherein the side fence is provided with an engaging portion that engages with the first cassette portion and the second cassette portion and regulates movement of the second cassette portion in a sliding direction. Paper cassette. 4. A first cassette portion inserted into the image recording apparatus main body, a second cassette portion slidably mounted on the first cassette portion, and a side fence abutting on a side portion of a recording sheet to be set. And a dust-proof cover rotatably installed in the second cassette unit, and by changing the positions of the side fences and the second cassette unit, a plurality of types of standard-size recording sheets are stored. A cover that is provided with an engaging portion that engages with a recess formed in the side fence, wherein the position of the side fence and the position of the second cassette portion are determined according to the type of recording paper. A sheet cassette that engages with the engaging portion and the concave portion only when they match with each other and can be inserted into the image recording apparatus main body.