KR101665974B1 - Apparatus for elevating bottom plate of paper feeding unit in image forming apparatus - Google Patents
Apparatus for elevating bottom plate of paper feeding unit in image forming apparatus Download PDFInfo
- Publication number
- KR101665974B1 KR101665974B1 KR1020150115829A KR20150115829A KR101665974B1 KR 101665974 B1 KR101665974 B1 KR 101665974B1 KR 1020150115829 A KR1020150115829 A KR 1020150115829A KR 20150115829 A KR20150115829 A KR 20150115829A KR 101665974 B1 KR101665974 B1 KR 101665974B1
- Authority
- KR
- South Korea
- Prior art keywords
- bottom plate
- main body
- shaft
- cover
- curved member
- Prior art date
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6502—Supplying of sheet copy material; Cassettes therefor
- G03G15/6508—Automatic supply devices interacting with the rest of the apparatus, e.g. selection of a specific cassette
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6552—Means for discharging uncollated sheet copy material, e.g. discharging rollers, exit trays
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Manual Feeding Of Sheets (AREA)
Abstract
The present invention relates to a cover which is openably and closably provided on one side of a main body. A bottom plate having one end rotatably connected to the cover at an inner side of the cover and the other end elevably connected to both sides of the main body; And a paper feeding roller which is provided on a rotating shaft provided between both side surfaces of the main body and which feeds the paper stacked on the bottom plate, the manual paper feeding unit comprising: A lower plate spring which is lifted from the cover; A bottom plate shaft provided on the other end of the bottom plate in a direction parallel to the rotation axis; A stopper gear provided at one end of the rotary shaft; And stopper means connected to the stopper gear and the bottom plate shaft at one side of the main body to maintain the bottom plate in a lowered state and to raise the bottom plate shaft when the rotation shaft rotates. And a bottom plate lifting device for a manual paper feed unit of the apparatus.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flat plate elevating apparatus for a manual feed unit of an image forming apparatus, and more particularly, to a flat plate elevating apparatus for a manual feed unit of an image forming apparatus in which a bottom plate is lowered when a cover is opened and a bottom plate is raised.
2. Description of the Related Art Conventionally, an image forming apparatus such as a printer, a copying machine, a multifunction apparatus or the like is provided with an automatic paper feed unit mounted inside a main body for feeding paper and a manual paper feed unit provided outside the main body. The automatic paper feed unit is a device that allows standardized paper to be automatically fed, and the manual paper feed unit is a device that allows a user to manually feed a non-standardized paper or special paper.
The automatic paper feed unit and the manual paper feed unit are provided with a drive mechanism for moving the bottom plate (knock-up plate) for supporting the paper. [0005] Japanese Patent Application No. 10-0343154 discloses a printing apparatus comprising a cassette for receiving paper and detachably coupled to a printing apparatus main body, a knock-up plate rotatably installed in the cassette and loaded with paper stacked thereon, A lifter for lifting the knock-up plate to rotate the knock-up plate so that the paper is lifted to the paper feeding position while being rotated by a predetermined driving source; A sensor lever for detecting that the paper is positioned at the paper feeding position by being in contact with the paper stacked on the upper surface of the paper, And a pickup roller that sequentially moves the paper into the main body by rotating the sensor lever Additional weight is installed to be able to flow at predetermined intervals in the vertical direction, discloses a feeder of the printing machine, it characterized in that the additional weight to be in contact with the paper. Here, since the above prior art uses electronic parts such as a sensor lever and a sensor for driving the feed roller by ascending the bottom plate, that is, the knock-up plate and confirming the knock-up plate lifting position, There are disadvantages.
On the other hand, in addition to the expensive apparatuses disclosed in the above-mentioned prior art documents, a low-cost manual paper feeding unit having a lever which can be manually operated by a user to lift and lower the bottom plate has been developed. However, in the case of the manual paper feed unit, since the user has to manually manipulate the lifting and lowering operation of the bottom plate, an inaccurate paper feeding operation can often be performed due to inadvertent lever operation.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an image forming apparatus capable of raising and lowering a bottom plate without using electronic components, And an object of the present invention is to provide a device.
According to an aspect of the present invention, there is provided an electronic device comprising: a cover; A bottom plate having one end rotatably connected to the cover at an inner side of the cover and the other end elevably connected to both sides of the main body; And a paper feeding roller which is provided on a rotating shaft provided between both side surfaces of the main body and which feeds the paper stacked on the bottom plate, the manual paper feeding unit comprising: A lower plate spring which is lifted from the cover; A bottom plate shaft provided on the other end of the bottom plate in a direction parallel to the rotation axis; A stopper gear provided at one end of the rotary shaft; And stopper means connected to the stopper gear and the bottom plate shaft at one side of the main body to maintain the bottom plate in a lowered state and to raise the bottom plate shaft when the rotation shaft rotates.
Here, the stopper means includes: a center shaft provided in a direction parallel to the rotation axis; A curved member formed to be rotatable about the central axis and having one end depressing the bottom plate shaft to lower the bottom plate; An elastic member connected between one side of the curved member and the side fixed portion of the main body; And a gear portion formed on an outer surface of the curved member and engaged with the stopper gear to rotate the curved member when the rotation shaft rotates to elevate the bottom plate shaft.
Preferably, the stopper means further includes a first latching protrusion formed on one side surface of the main body, the first latching protrusion being in contact with the other end of the curved member when the rotation shaft rotates, and regulating a rotation angle of the curved member .
In addition, the stopper means may be formed on one side of the main body, and may further include a second latching protrusion that contacts the one end of the curved member when the rotation shaft rotates, and regulates the rotation angle of the curved member. do.
Preferably, when the cover is closed, the bottom plate shaft pushes the curved member downward, and the elastic member is moved from the center axis to the side surface of the side plate so that the tensile force of the elastic member exceeds the tension of the bottom plate spring. And the bottom plate is kept in a lowered state even if the cover is opened.
Preferably, when the rotation shaft is rotated for operation of the paper feed roller in a state in which the bottom plate is lowered, the curved member is rotated by the stopper gear and the gear portion, And the bottom plate is held in a raised state by the bottom plate spring so that the tensile force of the member does not act on the bottom plate, and is offset from the center axis to the side opposite to the side fixing portion.
On the other hand, an arc-shaped slot for guiding the movement of the bottom plate shaft when the bottom plate is lifted and lowered is formed on a side surface of the main body.
According to the present invention, the bottom plate can be lifted and lowered without using electronic components such as sensors, so that the bottom plate is lifted up at the time of the feeding roller assembly in a cost-effective manner.
1 is a perspective view showing a bottom plate elevating apparatus for a manual paper feed unit of an image forming apparatus according to the present invention,
2 is an enlarged side view of FIG. 1,
3 is a perspective view showing a state in which the bottom plate elevating device for the manual paper feed unit of the image forming apparatus according to the present invention is actuated during feeding,
4 is an enlarged side view of Fig. 3, Fig.
5 is a perspective view showing a state in which a bottom plate is lowered by operating a bottom plate lifting device for a manual paper feed unit of an image forming apparatus according to the present invention when a cover is closed;
6 is an enlarged side view of Fig. 5; Fig.
Hereinafter, a preferred embodiment of a bottom plate lifting device for a manual paper feed unit of an image forming apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the technical scope of the present invention. Will be.
Referring to FIGS. 1 and 2, a bottom plate lifting device for a manual paper feed unit of an image forming apparatus according to the present invention is a device having a structure capable of lifting and lowering a bottom plate without using an electronic component.
First, the manual
The lower plate elevating apparatus for elevating and lowering the
The bottom spring 110 (see FIG. 4) is provided between the
The
The
The stopper means 140 is connected to the
More specifically, the stopper means 140 includes a
Here, the
The stopper means 140 further includes a
In addition, the stopper means 140 further includes a second latching protrusion 146 for regulating the angle of rotation of the
An arc-
5 and 6, when the
1 and 2, when the
As described above, the bottom plate elevating device for the manual paper feed unit of the image forming apparatus according to the present invention is such that the
Therefore, according to the present invention, the bottom plate can be raised and lowered without using an electronic component such as a sensor, so that the bottom plate can be raised at the same time as the feeding roller is cost-effective.
The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the scope of protection of the present invention should be interpreted according to the claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It should be interpreted that it is included in the scope of right.
10: Manual feed unit 11: Cover
12: bottom plate 13: feeding roller
14, 15: side surface of the main body 16:
17: Slot 110: Lower plate spring
120: bottom plate shaft 130: stopper gear
140: stopper means 141: center axis
142: Curved member 143: Elastic member
144: gear portion 145: first engaging projection
146: second latching projection
Claims (7)
A bottom plate spring installed between the bottom plate and the cover to raise the bottom plate from the cover;
A bottom plate shaft provided on the other end of the bottom plate in a direction parallel to the rotation axis;
A stopper gear provided at one end of the rotary shaft; And
And stopper means connected to the stopper gear and the bottom plate shaft at one side of the main body to maintain the bottom plate in a lowered state and to raise the bottom plate shaft when the rotation shaft rotates. The lower plate lifting and lowering apparatus for the manual paper feed unit.
The stopper means,
A center axis disposed in a direction parallel to the rotation axis;
A curved member formed to be rotatable about the central axis and having one end depressing the bottom plate shaft to lower the bottom plate;
An elastic member connected between one side of the curved member and the side fixed portion of the main body; And
And a gear portion formed on an outer surface of the curved member and engaged with the stopper gear to rotate the curved member when the rotation shaft rotates to thereby raise the bottom plate shaft. Bottom plate lifting device.
Wherein the stopper means further comprises a first latching protrusion formed on a side surface of the main body and configured to contact the other end of the curved member when the rotation shaft rotates to regulate a rotation angle of the curved member. A lower plate lifting and lowering device for a manual paper feed unit of a forming device.
Wherein the stopper means further comprises a second latching protrusion formed on one side surface of the main body and adapted to contact the one end of the curved member when the rotation shaft rotates to regulate a rotation angle of the curved member. A lower plate lifting and lowering device for a manual paper feed unit of a forming device.
When the cover is closed, the bottom plate shaft pushes the curved member downward, and the elastic member is biased toward the side of the side surface fixing portion from the center axis so that the tensile force of the elastic member exceeds the tension of the bottom plate spring. And the bottom plate is kept in a lowered state even if the cover is opened.
When the rotation shaft is rotated for the operation of the paper feed roller in the state that the bottom plate is lowered, the curved member is rotated by the stopper gear and the gear portion, and the elastic force of the elastic member, Wherein the bottom plate is in a position offset from the central axis to the side opposite to the side fixing portion so as not to act on the bottom plate so that the bottom plate maintains the raised state by the bottom plate spring Lifting device.
Wherein an arc-shaped slot for guiding the movement of the bottom plate shaft when the bottom plate is lifted and lowered is formed on a side surface of the main body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150115829A KR101665974B1 (en) | 2015-08-18 | 2015-08-18 | Apparatus for elevating bottom plate of paper feeding unit in image forming apparatus |
Applications Claiming Priority (1)
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KR1020150115829A KR101665974B1 (en) | 2015-08-18 | 2015-08-18 | Apparatus for elevating bottom plate of paper feeding unit in image forming apparatus |
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KR101665974B1 true KR101665974B1 (en) | 2016-10-13 |
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KR1020150115829A KR101665974B1 (en) | 2015-08-18 | 2015-08-18 | Apparatus for elevating bottom plate of paper feeding unit in image forming apparatus |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08225167A (en) * | 1995-02-20 | 1996-09-03 | Canon Inc | Sheet feeder and image forming device |
JP3728081B2 (en) * | 1997-12-26 | 2005-12-21 | キヤノン株式会社 | Paper feeding device and image forming apparatus |
JP2010008927A (en) * | 2008-06-30 | 2010-01-14 | Canon Inc | Image forming apparatus |
JP2010202379A (en) * | 2009-03-05 | 2010-09-16 | Ricoh Co Ltd | Paper feeder, image forming device |
-
2015
- 2015-08-18 KR KR1020150115829A patent/KR101665974B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08225167A (en) * | 1995-02-20 | 1996-09-03 | Canon Inc | Sheet feeder and image forming device |
JP3728081B2 (en) * | 1997-12-26 | 2005-12-21 | キヤノン株式会社 | Paper feeding device and image forming apparatus |
JP2010008927A (en) * | 2008-06-30 | 2010-01-14 | Canon Inc | Image forming apparatus |
JP2010202379A (en) * | 2009-03-05 | 2010-09-16 | Ricoh Co Ltd | Paper feeder, image forming device |
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