JPH061548Y2 - Paper cassette paper supply mechanism - Google Patents
Paper cassette paper supply mechanismInfo
- Publication number
- JPH061548Y2 JPH061548Y2 JP1986032990U JP3299086U JPH061548Y2 JP H061548 Y2 JPH061548 Y2 JP H061548Y2 JP 1986032990 U JP1986032990 U JP 1986032990U JP 3299086 U JP3299086 U JP 3299086U JP H061548 Y2 JPH061548 Y2 JP H061548Y2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- cassette
- rotary plate
- paper cassette
- rotating plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【考案の詳細な説明】 〈技術分野〉 この考案は、画像形成装置本体に用紙を供給する用紙カ
セットに、用紙を補給するための用紙カセットの用紙補
給機構に関する。DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a sheet replenishing mechanism of a sheet cassette for replenishing a sheet to a sheet cassette that supplies a sheet to an image forming apparatus body.
〈従来技術とその欠点〉 一般に画像形成装置本体に用紙を供給する用紙カセット
は、用紙カセット本体内の回転板上に用紙を挿入し、こ
の回転板によって押し上げられる用紙を給紙ローラで順
次給紙するようにしている。この用紙は外気の湿気を吸
収すると形成画像品質の低下を招くことがある。このた
め、一度に補給する用紙の枚数は必要に応じた量である
方が望ましい。<Prior art and its drawbacks> Generally, in a paper cassette that supplies paper to the main body of the image forming apparatus, the paper is inserted on a rotating plate in the main body of the paper cassette, and the paper pushed up by the rotating plate is sequentially fed by a paper feed roller. I am trying to do it. When this paper absorbs moisture from the outside air, the quality of the formed image may deteriorate. For this reason, it is desirable that the number of sheets to be supplied at one time be as large as necessary.
しかしながら、用紙カセットを画像形成装置本体に装着
した状態ではスプリングで上向きの力が付勢された回転
板によって用紙が押し上げられ用紙カセット上方の給紙
ローラに圧接しているため、用紙の補給を行なうことが
できず用紙カセットを取り出してから用紙の補給を行わ
なければならない。このため必要に応じた少量の枚数の
用紙を補給する場合には用紙補給の回数が増えるため特
に面倒な作業であった。However, when the paper cassette is mounted on the main body of the image forming apparatus, the paper is pushed up by the rotating plate urged upward by the spring and pressed against the paper feed roller above the paper cassette, so the paper is replenished. Therefore, the paper cassette must be taken out and the paper must be replenished. Therefore, when replenishing a small number of sheets as needed, the number of sheet replenishments increases, which is a particularly troublesome work.
〈考案の目的〉 この考案の目的は、用紙カセットを画像形成装置に装着
したままで用紙の補給を行なうことのできる用紙カセッ
トの用紙補給機構を提供することにある。<Object of the Invention> An object of the present invention is to provide a paper replenishing mechanism of a paper cassette that can replenish paper while the paper cassette is mounted in the image forming apparatus.
〈考案の構成および効果〉 この考案は、用紙カセット本体内に収納され、上面に用
紙を載置するとともに、用紙搬送方向の後端部を回転中
心として前記用紙搬送方向の後端部から前端部にかけて
の傾斜角が変化する方向に一定角度範囲で回転自在に支
持された回転板と、用紙カセット本体内の前記回転板下
方に設けられ前記回転板を前記傾斜角が増す方向に押し
上げるスプリングと、を備える用紙カセットを、画像形
成装置に装着して成る、用紙カセットの用紙補給機構に
おいて、 前記回転板の上面の一部に一端が当接し他端が画像形成
装置本体または用紙カセット本体に回動自在に支持され
た押圧部と、この押圧部に一体的に設けられ、該押圧部
を回動させて前記回転板を前記スプリングに抗して押し
下げる操作レバーとから成る回転板押下手段を備え、 前記回転板の前端部に、用紙搬送方向に延び且つ用紙搬
送方向の直角方向に並列する複数のスリットを設けると
ともに、これらの並列するスリット間に用紙の重送防止
用摩擦部材を取り付け、 前記操作レバーの回動によって前記回転板が押し下げら
れた状態で、前記回転板のスリットから前記摩擦部材の
表面高さより上方に相対的に突出するリブを、前記用紙
カセット本体の底面部に設けたことを特徴とする。<Structure and Effect of the Invention> The present invention stores the paper on the upper surface of the paper cassette main body, mounts the paper on the upper surface, and rotates the rear end in the paper transport direction as the center of rotation from the rear end to the front end in the paper transport direction. A rotary plate rotatably supported in a fixed angle range in a direction in which the tilt angle changes, and a spring provided below the rotary plate in the paper cassette body to push up the rotary plate in a direction in which the tilt angle increases. In a paper replenishing mechanism for a paper cassette, which is formed by mounting a paper cassette equipped with the above in an image forming apparatus, one end is in contact with a part of the upper surface of the rotating plate and the other end is rotated to the image forming apparatus main body or the paper cassette main body. A rotating plate including a pressing portion that is freely supported, and an operation lever that is integrally provided on the pressing portion and that rotates the pressing portion to push down the rotating plate against the spring. And a plurality of slits extending in the sheet transport direction and arranged in parallel at right angles to the sheet transport direction at the front end of the rotary plate, and a friction member for preventing double feeding of sheets between these parallel slits. And a rib that relatively projects above the surface height of the friction member from the slit of the rotary plate when the rotary plate is pushed down by the rotation of the operation lever. It is characterized by being provided in.
上記のように構成したことによりこの考案によれば、用
紙カセットが画像形成装置本体に装着されたままで用紙
補給レバーの操作レバーを操作して押圧部を回転させる
と、回転板の被押圧部が押圧部によって押し下げられ、
回転板も押し下げられる。このため用紙カセットが装着
されたままの状態で用紙カセット内の用紙と給紙ローラ
間に用紙を挿入できるだけの隙間が形成され、この隙間
から押し下げられた回転板に沿って用紙を用紙カセット
に補給することができる。すなわち、この考案によれば
用紙カセットを画像形成装置本体に装着したままで、用
紙補給レバーを操作するだけで用紙の補給を行なうこと
ができるため、用紙カセットに予め大量の用紙を一度に
入れておかなくても、簡単な作業で必要な量の用紙を補
給してゆくことができる。According to the present invention having the above-described configuration, when the operation portion of the paper supply lever is operated to rotate the pressing portion while the paper cassette is mounted in the image forming apparatus main body, the pressed portion of the rotating plate is It is pushed down by the pressing part,
The rotating plate is also pushed down. For this reason, a gap is formed between the paper in the paper cassette and the paper feed roller while the paper cassette is still installed, and the paper is replenished into the paper cassette along the rotating plate pushed down from this gap. can do. That is, according to the present invention, it is possible to replenish paper simply by operating the paper replenishing lever while the paper cassette is still attached to the main body of the image forming apparatus. You can easily replenish the required amount of paper with a simple operation.
しかも、回転板が押し下げられた状態では、回転板の前
端部に設けた並列する複数のスリットから、それらの並
列するスリット間に設けた用紙の重送防止用摩擦部材の
表面高さより上方に、用紙カセットの底面部に設けたリ
ブが相対的に突出するため、回転板の上面に用紙が載置
されていない空の状態で、新たに用紙を装填する場合で
も、用紙先端部が重送防止用摩擦部材に接することな
く、装填すべき用紙の最下部先端部が前記リブに沿って
スムーズに装填することができる。これにより複数枚の
用紙を新たに装填する際に、最下部の用紙がめくれたり
ずれるといった不具合も防止することができる。Moreover, in the state where the rotary plate is pushed down, from the plurality of parallel slits provided at the front end portion of the rotary plate, above the surface height of the double feed preventing friction member of the sheet provided between the parallel slits, Since the ribs provided on the bottom of the paper cassette project relatively, the leading edge of the paper prevents double feeding even when a new paper is loaded in the empty state where no paper is placed on the upper surface of the rotating plate. The lowermost tip of the sheet to be loaded can be smoothly loaded along the rib without contacting the friction member. Thus, when a plurality of sheets of paper are newly loaded, it is possible to prevent a problem that the lowermost sheet of paper is turned over or slipped.
〈実施例〉 第１図はこの考案の実施例である画像形成装置の用紙カ
セットの用紙補給機構の斜視図である。図において用紙
カセット本体６は挿入する用紙のサイズ（Ｂ５，Ａ４
等）に応じた大きさよりも大きめになっている。用紙カ
セット本体６の底板の前端部には用紙補給の補助をする
６本のリブ２が用紙搬送方向に沿って設けられている。
用紙カセット内にはＬ字型の回転板４が配設されてい
る。回転板４と用紙カセット本体６との間にスプリング
（図示されず）が配置され、回転板４上に用紙や後述す
る用紙補給レバーによって荷重が加わったときのみ支軸
４０を支点として前端側が押し下げられる。回転板４上
のリブ２に対応する位置にはスリット３が設けられてい
る。回転板４の前端部表面上には摩擦部材７が設けられ
ている。摩擦部材７は画像形成装置に給紙される用紙が
重送されるのを防止する摩擦抵抗の大きな部材で成る。
この摩擦部材の厚みは、回転板４が一杯に押し下げられ
たとき、スリット３から上方に現れるリブ２よりも薄く
なっている。用紙カセット本体６の前端部の左右隅部に
は、用紙カセット内に挿入された用紙が重送されるのを
防止する爪８が設けられている。用紙カセット本体６は
略中央部ａの位置まで画像形成装置本体内に収納され
る。<Embodiment> FIG. 1 is a perspective view of a paper supply mechanism of a paper cassette of an image forming apparatus according to an embodiment of the present invention. In the figure, the paper cassette body 6 indicates the size of the paper to be inserted (B5, A4
Etc.) is larger than the size according to. Six ribs 2 are provided at the front end of the bottom plate of the paper cassette body 6 along the paper transport direction to assist paper supply.
An L-shaped rotating plate 4 is arranged in the paper cassette. A spring (not shown) is arranged between the rotary plate 4 and the paper cassette body 6, and the front end side is pushed down with the support shaft 40 as a fulcrum only when a load is applied to the rotary plate 4 by the paper or a paper supply lever described later. To be Slits 3 are provided on the rotary plate 4 at positions corresponding to the ribs 2. A friction member 7 is provided on the front end surface of the rotary plate 4. The friction member 7 is a member having a large frictional resistance that prevents the sheets fed to the image forming apparatus from being double-fed.
The thickness of this friction member is smaller than that of the rib 2 that appears upward from the slit 3 when the rotary plate 4 is pushed down fully. At the right and left corners of the front end portion of the paper cassette body 6, there are provided claws 8 that prevent the papers inserted in the paper cassette from being double fed. The sheet cassette body 6 is housed in the image forming apparatus body up to the position of the substantially central portion a.
画像形成装置本体の用紙カセット上方には用紙補給レバ
ー１が設けられている。用紙補給レバー１は回転支軸１
０を支点に、操作レバー１１を上下動させると押圧部１
２が上下に回動する。前記回転板４の押圧部１２に対向
する部分には被押圧部４１が回転板４と一体的に設けら
れている。被押圧部４１は押圧部１２によって押し下げ
られた時に回転板４を押し下げる。A paper supply lever 1 is provided above the paper cassette of the main body of the image forming apparatus. The paper supply lever 1 is a rotary support shaft 1.
When the operation lever 11 is moved up and down with 0 as the fulcrum, the pressing portion 1
2 rotates up and down. A pressed portion 41 is integrally provided with the rotating plate 4 at a portion of the rotating plate 4 facing the pressing portion 12. The pressed portion 41 pushes down the rotary plate 4 when pushed down by the pushing portion 12.
上記のように構成することによりこの実施例によれば、
用紙カセット本体が画像形成装置本体に装着されたまま
用紙補給レバー１の操作レバー１１を押し下げると、押
圧部１２が回動する。この押圧部１２が回転板４の一部
を構成する被押圧部４１に当たって回転板４を押し下げ
る。第２図は用紙補給レバー１によって回転板が押し下
げられた状態を表した図である。図において回転板４の
スリット３に対応した位置に配置されたリブ２が回転板
４の上方に現れる。このとき摩擦部材７はリブ２の上端
よりも下方に位置しているため、用紙補給時に用紙が摩
擦部材７に接することがない。このような状態で用紙カ
セット本体６の手前から用紙を補給することができる。
用紙はリブ２との滑りによって容易に補給することがで
きる。また、押圧部１２は用紙が載置されない位置で回
転板４の被押圧部４１と接しているため用紙補給の際の
邪魔になることはない。用紙補給レバー１の操作レバー
１１を押し下げるのを解除すると、押圧部１２が上方に
回動し、元の状態に戻る。同時に回転板４がスプリング
の力で押し上がる。この状態で画像形成装置に用紙を供
給することができる。According to this embodiment by configuring as described above,
When the operation lever 11 of the paper supply lever 1 is pushed down while the main body of the paper cassette is attached to the main body of the image forming apparatus, the pressing portion 12 is rotated. The pressing portion 12 hits the pressed portion 41 forming a part of the rotary plate 4 to push down the rotary plate 4. FIG. 2 is a view showing a state where the rotary plate is pushed down by the paper supply lever 1. In the figure, the rib 2 arranged at a position corresponding to the slit 3 of the rotary plate 4 appears above the rotary plate 4. At this time, since the friction member 7 is located below the upper ends of the ribs 2, the paper does not come into contact with the friction member 7 when the paper is replenished. In such a state, the paper can be replenished from the front side of the paper cassette body 6.
The paper can be easily replenished by sliding with the ribs 2. Further, since the pressing portion 12 is in contact with the pressed portion 41 of the rotary plate 4 at the position where the paper is not placed, it does not interfere with the paper supply. When the pushing down of the operation lever 11 of the sheet supply lever 1 is released, the pressing portion 12 rotates upward and returns to the original state. At the same time, the rotary plate 4 is pushed up by the force of the spring. Paper can be supplied to the image forming apparatus in this state.
本実施例では用紙補給レバー１を画像形成装置本体の用
紙カセット本体６の上方に配置したが、用紙カセット本
体内、例えば図中１３の位置に回転支軸を設けるように
してもよい。In the present embodiment, the paper supply lever 1 is arranged above the paper cassette body 6 of the image forming apparatus main body, but the rotation spindle may be provided in the paper cassette main body, for example, at a position 13 in the drawing.
このように用紙カセット本体側に用紙補給レバー１を設
けておけば、用紙カセットを画像形成装置から取り外し
た状態で、空の用紙カセットに複数枚の用紙を装填する
場合にも、最下部の用紙が摩擦部材７に接触せず、用紙
のめくれやずれを防止してスムーズに補給できるように
なる。By thus providing the paper supply lever 1 on the main body of the paper cassette, even when the empty paper cassette is loaded with a plurality of papers with the paper cassette removed from the image forming apparatus, the paper at the bottom of the paper cassette is removed. Does not come into contact with the friction member 7, so that the sheet can be smoothly turned up and prevented from being turned over or displaced.
第１図はこの考案の実施例である用紙カセットの用紙補
給機構の斜視図であり、第２図は用紙補給レバーによっ
て回転板が押し下げられた状態を示した図である。 １−用紙補給レバー、 １１−操作レバー、 １２−押圧部。FIG. 1 is a perspective view of a paper supply mechanism of a paper cassette according to an embodiment of the present invention, and FIG. 2 is a view showing a state where a rotary plate is pushed down by a paper supply lever. 1-paper supply lever, 11-operation lever, 12-pressing part.
Claims (1)
紙を載置するとともに、用紙搬送方向の後端部を回転中
心として前記用紙搬送方向の後端部から前端部にかけて
の傾斜角が変化する方向に一定角度範囲で回転自在に支
持された回転板と、用紙カセット本体内の前記回転板下
方に設けられ前記回転板を前記傾斜角が増す方向に押し
上げるスプリングと、を備える用紙カセットを、画像形
成装置に装着して成る、用紙カセットの用紙補給機構に
おいて、 前記回転板の上面の一部に一端が当接し他端が画像形成
装置本体または用紙カセット本体に回動自在に支持され
た押圧部と、この押圧部に一体的に設けられ、該押圧部
を回動させて前記回転板を前記スプリングに抗して押し
下げる操作レバーとから成る回転板押下手段を備え、 前記回転板の前端部に、用紙搬送方向に延び且つ用紙搬
送方向の直角方向に並列する複数のスリットを設けると
ともに、これらの並列するスリット間に用紙の重送防止
用摩擦部材を取り付け、 前記操作レバーの回動によって前記回転板が押し下げら
れた状態で、前記回転板のスリットから前記摩擦部材の
表面高さより上方に相対的に突出するリブを、前記用紙
カセット本体の底面部に設けたことを特徴とする用紙カ
セットの用紙補給機構。Claims: 1. A paper cassette body is housed, a paper is placed on the upper surface, and an inclination angle from a rear end to a front end of the paper transport direction is changed with a rear end of the paper transport direction as a rotation center. A sheet cassette provided with a rotating plate rotatably supported in a predetermined angle range in a direction of rotation, and a spring provided below the rotating plate in the sheet cassette body and pushing up the rotating plate in a direction in which the inclination angle increases, In a paper replenishing mechanism of a paper cassette mounted on an image forming apparatus, one end of the upper surface of the rotating plate abuts and the other end is rotatably supported by the image forming apparatus main body or the paper cassette main body. And a rotary plate pressing means which is provided integrally with the pressing part and rotates the pressing part to press down the rotary plate against the spring. A plurality of slits that extend in the paper transport direction and are arranged in parallel at right angles to the paper transport direction are provided at the front end of the paper, and a friction member for preventing double feed of paper is installed between the slits that are parallel to each other. In the state where the rotary plate is pushed down by the movement, a rib relatively projecting above the surface height of the friction member from the slit of the rotary plate is provided on the bottom surface of the paper cassette body. Paper supply mechanism for the paper cassette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986032990U JPH061548Y2 (en) | 1986-03-06 | 1986-03-06 | Paper cassette paper supply mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986032990U JPH061548Y2 (en) | 1986-03-06 | 1986-03-06 | Paper cassette paper supply mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62144842U JPS62144842U (en) | 1987-09-12 |
| JPH061548Y2 true JPH061548Y2 (en) | 1994-01-12 |
Family
ID=30840180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986032990U Expired - Lifetime JPH061548Y2 (en) | 1986-03-06 | 1986-03-06 | Paper cassette paper supply mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061548Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7313912B2 (en) * | 2019-05-31 | 2023-07-25 | キヤノン株式会社 | Sheet feeding device and image forming device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5351163Y2 (en) * | 1972-12-22 | 1978-12-07 | ||
| JPS5991237U (en) * | 1982-12-09 | 1984-06-20 | 株式会社リコー | Paper cassette |
-
1986
- 1986-03-06 JP JP1986032990U patent/JPH061548Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62144842U (en) | 1987-09-12 |
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