JPS5936036A - Different size paper detecting mechanism of paper feed cassette - Google Patents

Different size paper detecting mechanism of paper feed cassette

Info

Publication number
JPS5936036A
JPS5936036A JP57143987A JP14398782A JPS5936036A JP S5936036 A JPS5936036 A JP S5936036A JP 57143987 A JP57143987 A JP 57143987A JP 14398782 A JP14398782 A JP 14398782A JP S5936036 A JPS5936036 A JP S5936036A
Authority
JP
Japan
Prior art keywords
paper
paper feed
plate
feed cassette
detection means
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.)
Pending
Application number
JP57143987A
Other languages
Japanese (ja)
Inventor
Satoru Tomita
冨田 悟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP57143987A priority Critical patent/JPS5936036A/en
Publication of JPS5936036A publication Critical patent/JPS5936036A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To prevent a paper feed miss or a skew (oblique feed) by providing a simple mechanism detecting that a sheet of paper with a width narrower than a preset regulation plate distance is accommodated in a paper feed cassette used for a copying machine and a printer, etc. CONSTITUTION:A paper feed cassette 1 is provided with a pressure plate 3 at the front half section of a bottom plate 2 in the paper feed direction and is further comprised of a regulation plate 4 moving in the width direction and a fixed side plate 5. The bottom plate 2 is hollow inside and an L-shaped detection means 13 is provided at the end of this side in relation to the paper feed direction. The detection means 13 is provided with arms 13a, 13b and, in addition, a protruded section 13c is provided at the tip of this arm 13b. This detection means 13 is energized by a spring around a support axis in the direction that the arm 13a is proturded from an escape hole 2c, i.e., the direction that the protruded section 13c provided at the tip of the arm 13b retreats from a proturded prot 2b. Accordingly, if sheets of A4 size paper are accommodated while the device is set to a letter size, the heave at the rear end of the paper can be easily confirmed by the proturded section 13c.

Description

【発明の詳細な説明】 本発明は複写機、印刷機等に用いられる給紙カセットに
係り、特に幅方向にサイズの異なる複数種類の用紙を収
容し得る給紙カセットに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feed cassette used in copying machines, printing machines, etc., and more particularly to a paper feed cassette that can accommodate a plurality of types of paper having different sizes in the width direction.

この種給紙カセットにおいては、収容された用紙がカセ
ット内で位置ずれを生じ、その結果として給紙ミスが生
じたり、スキュ(斜め送り)を引き起こしたりすること
がないように、用紙幅方向の規制板が設けられている0 この規制板は、用紙の中央を1個の給紙四−ラで送り出
す、いわゆるセンター規準方式では、用紙の両側力に設
けた規制板の双方を用紙幅方向に移動するようになって
いるし、用紙の両側部を1対の給紙四−ラで送り出す、
いわゆる片側規準方式では一方の規制板は固定し、もう
一方の規制板のみを用紙幅方向に移動するようになって
いる0この様な給紙カセットにおいて、例えばA4サイ
ズ用紙とレターサイズ用紙を収容可能な給紙カセットで
は、レターサイズ用紙(紙幅約216ミリメードル)に
規制板を合わせたままでこれより幅の狭いA4サイズ用
紙(紙幅約210ミリメートル)を収容することが出来
る。しかしこの場合A4サイズ用紙はその幅方向に位置
規制されていないため、給紙カセット内で収容位置がず
れることがある。そうするとQij述の如く給紙ミス(
ペーパージャムを含む)が生じたり、あるいは給紙ミス
が生じないまでもスキュを発生させたりすることかしば
しば起こる。
This type of paper feed cassette is designed to prevent paper from shifting in the cassette, resulting in misfeeding or skew (diagonal feeding). A regulating plate is provided.0 This regulating plate is used to feed the center of the paper using one paper feeding roller, which is the so-called center standard method, in which both regulating plates provided on both sides of the paper are fed in the width direction of the paper. It is designed to move, and both sides of the paper are fed out by a pair of paper feeding rollers.
In the so-called one-sided standard method, one regulating plate is fixed and only the other regulating plate is moved in the paper width direction.In such a paper feed cassette, for example, A4 size paper and letter size paper are stored. A possible paper feed cassette can accommodate letter-sized paper (approximately 216 millimeters in width) and A4-size paper (approximately 210 millimeters in width), which is narrower than this, while keeping the regulation plate aligned. However, in this case, since the position of A4 size paper is not regulated in the width direction, the storage position within the paper feed cassette may shift. Then, as mentioned by Qij, paper feeding errors (
Paper jams (including paper jams) often occur, or skew occurs even if paper feeding errors do not occur.

尚逆にA4サイズ用紙に対応した位置に規制板がある時
はレターサイズ用紙は、収容しても幅が広いため変形し
てしまって収容はされない。
On the other hand, if there is a regulating plate at a position corresponding to A4 size paper, letter size paper will not be accommodated because it will be deformed even if it is accommodated due to its wide width.

本発明は、セットされた規制板間隔より幅の狭い用紙が
誤って給紙カセット内に収容された時は、これを簡単な
機構で検知するようにし、もって給紙ミス、スキュを防
止することを目的とするものでああ。
To prevent misfeeding and skewing of paper by detecting it with a simple mechanism when paper whose width is narrower than the set interval between regulating plates is mistakenly stored in a paper feed cassette. Oh, that's what I'm aiming for.

特にレターサイズ用紙に対するA4サイズ用紙の如く、
幅は狭いけれども、給紙方向長さく縦方向長さ)の長い
用紙が誤って収容されるのを検知することを目的とする
ものである。
Especially like A4 size paper versus letter size paper,
Although the width is narrow, the purpose of this is to detect when paper that is long (long in the feeding direction and long in the vertical direction) is erroneously accommodated.

以下、図面に基づき本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail based on the drawings.

第1図は本発明の一実施例に係る給紙装置全体の斜視図
である。
FIG. 1 is a perspective view of the entire paper feeding device according to an embodiment of the present invention.

図において給紙カセット1は、底板2の給紙方向前半部
に圧板3を設け、さらに幅方向に移動する規制板4と同
定[+11板5がら措成されている。圧& a tf幅
方向に延びた基部3αを中心として先端部が、図示して
ない抑圧レバーの働きにより上昇し持ち上げられるよう
になっている。そしてこの給紙カセット1内に装填され
た用紙を図示してない給紙ローラに押しつけるものであ
る。前記規制板4はその両端に蝶番6.7が回動自在に
取り付けられており、この蝶番6.7の他端部は、底板
2に起立して設、けた支点8.9に固定されている。
In the figure, the paper feed cassette 1 includes a pressure plate 3 provided on the front half of the bottom plate 2 in the paper feed direction, and a regulating plate 4 and an identification plate 5 that move in the width direction. The distal end portion is raised and lifted by the action of a suppressing lever (not shown) centering on the base portion 3α extending in the width direction. The paper loaded in the paper feed cassette 1 is then pressed against a paper feed roller (not shown). The regulating plate 4 has hinges 6.7 rotatably attached to both ends thereof, and the other end of the hinge 6.7 is provided upright on the bottom plate 2 and fixed to a girder fulcrum 8.9. There is.

このことにより規制板4は給紙方向前後に揺動可能とな
っている。官うまでもなく、規制板4に、固定側板5に
対して平行であることが要求されることから、この規制
板4は、平行うランク機幅によって支持されているとも
言える。10は操作部材である切換ダイヤルであり、矢
印方向に回転することにより、この規制板4を前後に揺
動させ、以って用紙幅方向(カセット幅方向)の位置を
変えることが出来るようになっている。この機構につい
ては、後に詳述する。
This allows the regulating plate 4 to swing back and forth in the paper feeding direction. Needless to say, since the regulating plate 4 is required to be parallel to the fixed side plate 5, it can be said that the regulating plate 4 is supported by the width of the horizontal rank machine. Reference numeral 10 denotes a switching dial which is an operating member, and by rotating it in the direction of the arrow, the regulating plate 4 can be swung back and forth, thereby changing the position in the paper width direction (cassette width direction). It has become. This mechanism will be explained in detail later.

固定側板5はネジ等により、底板2に固定されているも
のである。そしてこの給紙カセツ)IKは、規制板40
位ぼを動かずことにより、2猟類の用紙、例えは、A4
サイズとレターサイズが装填されるようになっている。
The fixed side plate 5 is fixed to the bottom plate 2 with screws or the like. And this paper feed cassette) IK is the regulation plate 40
By not moving the post, you can use a piece of paper, such as A4 paper, for example.
Size and letter size are loaded.

本実施例では2種類としたが、何段階にも変えられる様
にすることが出来ることは言うまでもない。
In this embodiment, there are two types, but it goes without saying that it can be changed to any number of levels.

尚規制板4下端の突起4bが底板2の溝2αに入り込ん
でいるが、これは底部の用紙が規制板4の下に入るのを
防ぐためである。第2図は、規制板4と固定側板5の位
置関係を示す平面図であり、(σ)はA4サイズ間距離
(規制板4が幅方向にせり出した状態)を示し、(b)
はレターサイズ間距離(規制板4が後退した状態)を示
すものである。切換ダイヤル10は、支軸11に嵌合さ
れているものであって、中心軸tocL%偏芯軸IQb
を有するものである。偏芯軸10bは相対向する2面に
平面部を持っており、支軸11からの距離がt。
Note that the protrusion 4b at the lower end of the regulation plate 4 is inserted into the groove 2α of the bottom plate 2, and this is to prevent the paper at the bottom from entering under the regulation plate 4. FIG. 2 is a plan view showing the positional relationship between the regulation plate 4 and the fixed side plate 5, where (σ) indicates the distance between A4 size sheets (the state in which the regulation plate 4 protrudes in the width direction), and (b)
indicates the distance between letter sizes (the state in which the regulation plate 4 is retracted). The switching dial 10 is fitted onto the support shaft 11, and has a central axis tocL% eccentric axis IQb.
It has the following. The eccentric shaft 10b has flat portions on two opposing surfaces, and the distance from the support shaft 11 is t.

のものと、A2のものとがある( tI> l−x )
。また規制板4にはその中央部外面、即ち、切換ダイヤ
ル10と対面する側に、係止部4aを設けてあって、こ
の係止ρS4αと、前記中心軸10αの間には、引っ張
り方向のコイルスプリング12を設けている。この様に
すれば、規制板4は中心軸10α方向に引きつけられ、
前記偏芯軸10bの平面部で阻止されるのである。従っ
てこの規制板4は(厳密に言えば係止部4CLの先端部
)支軸11からtlの位置かあるいはA2の位置に切換
えられるのである。そしてLl) ttであることから
、t。
There are one for A2 and one for A2 (tI>l-x)
. Further, the regulating plate 4 is provided with a locking portion 4a on the outer surface of its central portion, that is, on the side facing the switching dial 10, and a locking portion 4a is provided between the locking portion ρS4α and the central axis 10α in the pulling direction. A coil spring 12 is provided. In this way, the regulating plate 4 is attracted in the direction of the central axis 10α,
This is blocked by the flat surface of the eccentric shaft 10b. Therefore, the regulating plate 4 (strictly speaking, the tip of the locking portion 4CL) can be switched from the support shaft 11 to the tl position or the A2 position. And since Ll) tt, t.

の位置に切換えられた時(第2図(G)の場合)は固定
側板5との距離は狭くなるし、A2の位置におかれた時
(第2図(b)の場合)は広くなるのである。
When it is switched to the position A2 (in the case of Fig. 2 (G)), the distance to the fixed side plate 5 becomes narrower, and when it is placed in the A2 position (in the case of Fig. 2 (b)), it becomes wider. It is.

第2図(b)に示すように、蝶番6.7の支点間距離A
、B、規制板長さC1支点8,9間距離りは、A−BS
C−Dに設定しである。この様にすることにより、規制
板4は支点8,9を結ぶ線に対して平行に移動が行なえ
るのである。従って支点8.9を固定側板5に対して平
行に設けれは、規制板4は固定側板5に常に平行な移動
となる。
As shown in Figure 2(b), the distance A between the supporting points of the hinge 6.7
, B, length of regulation plate C1 distance between fulcrums 8 and 9 is A-BS
It is set to CD. By doing so, the regulating plate 4 can be moved parallel to the line connecting the fulcrums 8 and 9. Therefore, if the fulcrum 8.9 is provided parallel to the fixed side plate 5, the regulating plate 4 always moves parallel to the fixed side plate 5.

再び第1図に戻り、本発明の詳細な説明する。Returning again to FIG. 1, the present invention will be explained in detail.

底板2は内部が中空となっており、破線で図示する如く
、5字状の検知手段13が給紙方向に対して手前側の端
部に設けである。
The inside of the bottom plate 2 is hollow, and as shown by the broken line, a 5-shaped detection means 13 is provided at the end on the near side with respect to the paper feeding direction.

この検知手段13はアーム13α、13bを有し、さら
にこのアーム13bの先端に突出部13Cを形成してい
る。この突出部13Cは垂直方向に起立して設けてあり
、底板2に形成した突出口2bより突出可能となってい
る。
The detection means 13 has arms 13α and 13b, and a protrusion 13C is formed at the tip of the arm 13b. This protrusion 13C is provided vertically and can protrude from the protrusion opening 2b formed in the bottom plate 2.

第2図(α)及び(b)より明らかな通り、この検知手
段13は底板2の内空部に設けた支軸13(Zを中心に
揺動し得るようになっており、またアーム13αは底板
2に形成した逃がし孔2Cから、上方に突出するように
なっており、且つ前記規制板4の移動範囲内に位置して
いる。ざらに図示してないがこの検知手段13はバネに
より、支軸13dの回りに、アーム13αが逃がし孔2
Cより突出する方向、従ってアーム13bの先端に設け
た突出部13Cが突出口2bより退避する方向に付勢さ
れている。
As is clear from FIGS. 2(α) and (b), this detection means 13 is configured to be able to swing around a support shaft 13 (Z) provided in the inner space of the bottom plate 2, and also includes an arm 13α. protrudes upward from an escape hole 2C formed in the bottom plate 2, and is located within the movement range of the regulation plate 4. Although not shown in detail, this detection means 13 is activated by a spring. , the arm 13α is connected to the relief hole 2 around the support shaft 13d.
The protruding portion 13C provided at the tip of the arm 13b is biased in the direction of protruding from the protruding opening 2b.

第2図(α)はA4サイズに対応した位置に規制板4が
ある状態を示しているが、この場合は、この規制板4は
支軸13d上にあるので、アーム13αは規制板4に影
響を受けることなく、上方に突出し、従って突出部13
Cは底板2の内部に位置している。
FIG. 2 (α) shows a state where the regulating plate 4 is located at a position corresponding to A4 size. In this case, since the regulating plate 4 is on the support shaft 13d, the arm 13α is placed on the regulating plate 4. It projects upwardly without being affected and thus the projection 13
C is located inside the bottom plate 2.

ところが同図(b)に示す如く、規制板4がレターサイ
ズに対応した位置に広がると1底板2表面よりと方に突
出しているアーム13a、を下刃に押すため、この検知
手段13は支軸13dを中心として揺動し、突出部13
Cが突出口、2 bより突出することになる。
However, as shown in FIG. 6(b), when the regulating plate 4 is expanded to a position corresponding to the letter size, the arm 13a protruding from the surface of the bottom plate 2 is pushed against the lower blade. The protruding portion 13 swings around the shaft 13d.
C is the protrusion opening, which protrudes from 2b.

従ってこの状態でもし、A4サイズ用紙を収容すれば、
A4サイズ用紙の後端部(給紙方向手前側)がこの突出
部13Cのために盛り上がってしまうことになり、ユー
ザは目でこれを確認することが出来るものである。
Therefore, if you store A4 size paper in this state,
The rear end (front side in the paper feeding direction) of the A4 size paper is raised due to the protrusion 13C, and the user can visually confirm this.

本発明は以上述べたように、規制板の動きに連動して、
検知手段を用紙収容部後端に突出するようにしたもので
あるから、例えばレターサイズ用紙に対応した規制板に
対してA4サイズ用紙を収容しようとした場合、容易に
これを検知することが出来るものである。
As described above, the present invention, in conjunction with the movement of the regulation plate,
Since the detection means is arranged to protrude from the rear end of the paper accommodating section, it is possible to easily detect, for example, when an attempt is made to accommodate A4 size paper against a regulation plate corresponding to letter size paper. It is something.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例に係る給紙カセットの斜視図
、第2図(a) 、 (b)は規制板位置が異なる場合
を示す要部平面図である。 4・・・・・・規制板、13・・・・・・検知手段。 195 第2図 (0) 第2図 (b)
FIG. 1 is a perspective view of a paper feed cassette according to an embodiment of the present invention, and FIGS. 2(a) and 2(b) are plan views of main parts showing the case where the position of the regulating plate is different. 4...Regulation plate, 13...Detection means. 195 Figure 2 (0) Figure 2 (b)

Claims (1)

【特許請求の範囲】[Claims] 少なくとも幅の異なる2種類の用紙に対応して幅方向に
移動可能な規制板を設けたカセットにおいて、幅広の用
紙に対応して移動する規制板と連動して用紙収容部内に
突出する用紙検知手段を給紙方向に対して手前側の端部
に設は、当該用紙より幅は狭く、且つ給紙方向に長い用
紙をその手前側の盛り上がりから検知するようにしたこ
とを特徴とする給紙カセットの異サイズ紙検知機構。
In a cassette provided with a regulation plate that is movable in the width direction to accommodate at least two types of paper with different widths, a paper detection means that protrudes into the paper storage unit in conjunction with the regulation plate that moves in response to the wide paper. A paper feed cassette is provided at an end on the near side with respect to the paper feeding direction, so that paper that is narrower in width than the paper concerned and longer in the paper feeding direction is detected from a bulge on the near side of the paper. different size paper detection mechanism.
JP57143987A 1982-08-21 1982-08-21 Different size paper detecting mechanism of paper feed cassette Pending JPS5936036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57143987A JPS5936036A (en) 1982-08-21 1982-08-21 Different size paper detecting mechanism of paper feed cassette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57143987A JPS5936036A (en) 1982-08-21 1982-08-21 Different size paper detecting mechanism of paper feed cassette

Publications (1)

Publication Number Publication Date
JPS5936036A true JPS5936036A (en) 1984-02-28

Family

ID=15351667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57143987A Pending JPS5936036A (en) 1982-08-21 1982-08-21 Different size paper detecting mechanism of paper feed cassette

Country Status (1)

Country Link
JP (1) JPS5936036A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209443A (en) * 1984-04-03 1985-10-22 Ricoh Co Ltd Paper feed unit of image forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209443A (en) * 1984-04-03 1985-10-22 Ricoh Co Ltd Paper feed unit of image forming device

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