JPH0510360U - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JPH0510360U JPH0510360U JP5699791U JP5699791U JPH0510360U JP H0510360 U JPH0510360 U JP H0510360U JP 5699791 U JP5699791 U JP 5699791U JP 5699791 U JP5699791 U JP 5699791U JP H0510360 U JPH0510360 U JP H0510360U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- sheet
- paper feed
- skew
- friction member
- 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.)
- Withdrawn
Links
Landscapes
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Registering Or Overturning Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Facsimiles In General (AREA)
Abstract
(57)【要約】
【目的】用紙を順次一枚ずつ給送する給紙装置におい
て、用紙の斜行のばらつきを小さくでき、しかも斜行を
簡単に調整できるようにする。
【構成】用紙積載手段としての給紙カセット１に用紙Ｐ
が積載収納され、この積載された最上紙表面の給紙方向
に対して後端部側に摩擦部材５が当接して設けられてい
る。この摩擦部材５は、回転軸５ａにアーム５ｂの一端
が固定され、アーム５ｂの他端の下面部に摩擦パッド５
ｄが取り付けてあり、この摩擦パッド５ｄが上記最上紙
表面の後端部側に当接可能な構成となっている。このよ
うな摩擦部材５により、給紙ロール３による給紙の際に
用紙に加わる力の関係が変化し、用紙の斜行が補正され
る。
(57) [Summary] [Purpose] In a paper feeding device that sequentially feeds sheets one by one, it is possible to reduce variations in skew of sheets and to easily adjust skew. [Structure] Paper P is placed in a paper feed cassette 1 as paper stacking means.
Are stacked and housed, and the friction member 5 is provided in contact with the rear end portion side of the surface of the stacked uppermost paper in the paper feeding direction. In this friction member 5, one end of an arm 5b is fixed to the rotating shaft 5a, and the friction pad 5 is attached to the lower surface of the other end of the arm 5b.
d is attached, and the friction pad 5d can come into contact with the rear end side of the uppermost paper surface. Such a friction member 5 changes the relationship of the force applied to the paper when the paper is fed by the paper feed roll 3, and corrects the skew of the paper.
Description
【０００１】[0001]
本考案は、例えば複写機、プリンタ装置、ファクシミリ装置等に組み込まれ、 所定サイズの用紙を順次一枚ずつ給送する給紙装置に関する。 The present invention is incorporated in, for example, a copying machine, a printer device, a facsimile device, or the like, The present invention relates to a sheet feeding device that sequentially feeds sheets of a predetermined size one by one.
【０００２】[0002]
図８に、従来の給紙装置を示す。同図に示すように、用紙積載手段としての給 紙カセット１内の可動底板１ａ上に所定サイズの用紙Ｐが積載されており、可動 底板１ａが底板押上げ部材２によって上方に付勢されることにより、上記積載さ れた用紙Ｐの前端部がその幅方向の略中央に位置する給紙ロール３の周面に圧接 されている。また、積載された用紙Ｐの側端と後端は、給紙カセット１内に設け られたサイド規制板１ｂと後端規制板１ｃによってそれぞれ整えられている。更 に、給紙方向（矢印Ａ方向）に沿って給紙カセット１よりも下流側には、給紙ロ ール３と対向する位置に捌き部材４が配設され、この捌き部材４の摩擦パッド４ ａが給紙ロール３の周面に圧接されている。 FIG. 8 shows a conventional paper feeding device. As shown in the figure, Paper P of a predetermined size is stacked on the movable bottom plate 1a in the paper cassette 1 and is movable. The bottom plate 1a is urged upward by the bottom plate pushing-up member 2 so that the above-mentioned loading is performed. The front end of the rolled paper P is pressed against the peripheral surface of the paper feed roll 3 located in the approximate center in the width direction. Has been done. Further, the side edge and the rear edge of the stacked sheets P are provided inside the sheet feeding cassette 1. The side regulating plate 1b and the rear end regulating plate 1c are arranged respectively. Change In addition, along the paper feed direction (direction of arrow A), the paper feed roller is located on the downstream side of the paper feed cassette 1. The separating member 4 is arranged at a position facing the roll 3 and the friction pad 4 of the separating member 4 is disposed. a is pressed against the peripheral surface of the paper feed roll 3.
【０００３】 上記構成において、給紙時には、不図示の制御手段による給紙ロール３の回転 制御に基づき用紙Ｐの最上紙が給送されて、給紙ロール３と摩擦パッド４ａ間に 案内され、もしここに最上紙を含む２枚以上の用紙が案内されてきた場合には摩 擦パッド４ａにより１枚ずつ捌かれながら送出される。この際、給紙カセット１ や給紙ロール３等の位置精度が狂うと用紙の斜行が発生することになるが、用紙 は通常その幅方向をサイド規制板１ｂによって整えられているので、給紙カセッ ト１上のずれは防止されている。[0003] In the above configuration, when the paper is being fed, the paper feeding roll 3 is rotated by the control means (not shown). The top paper of the paper P is fed under the control, and is fed between the paper feed roll 3 and the friction pad 4a. Guided, and if two or more sheets including the top sheet are guided here, wear It is delivered while being separated one by one by the rubbing pad 4a. At this time, the paper feed cassette 1 If the positional accuracy of the paper feed roll 3 or the like is incorrect, the paper may be skewed. Since the width direction is normally adjusted by the side regulation plate 1b, The shift on the gland 1 is prevented.
【０００４】[0004]
しかしながら、斜行の発生の根本原因は上述した各部材（給紙カセット１や給 紙ロール３等）の相互の配置関係にあり、従って、従来の組み立ての際には、各 部材の高精度の組み付けや煩雑な調整を行う必要があり、極めて作業能率が悪い という問題を抱えていた。 However, the root cause of the occurrence of skew is the above-mentioned members (the paper feed cassette 1 and the paper feed cassette). The paper rolls 3 etc.) are in a mutual arrangement relationship, and therefore, in the conventional assembly, Highly accurate assembly of parts and complicated adjustments are required, resulting in extremely poor work efficiency I had a problem.
【０００５】 また、従来では、斜行のわずかなばらつきは無視しており、せいぜいサイド規 制板１ｂをセットしなおすとか、給紙カセット１をセットしなおす等で対処して いるにすぎず、個々の装置毎に斜行のばらつきが生じていた。[0005] Also, in the past, slight variations in skew were ignored, and at best side rules Take measures such as resetting the control plate 1b or resetting the paper feed cassette 1 However, there was variation in skew between individual devices.
【０００６】 更に、装置が長期間使用されるにつれ、例えば給紙ロール３の表面が摩耗する こと等により給紙方向にズレが発生してくる場合があるが、このような場合には サービスマンコールが必要であり、ユーザーが簡単に修理できるというものでは なかった。[0006] Further, as the apparatus is used for a long period of time, the surface of the paper feed roll 3, for example, becomes worn. There may be a deviation in the paper feed direction due to things such as A serviceman call is required, and it is not something that the user can easily repair. There wasn't.
【０００７】[0007]
本考案は、上記従来の問題点に鑑み、用紙の斜行のばらつきを小さくでき、し かも斜行を簡単に調整することのできる給紙装置を提供することを目的とする。 In view of the above-mentioned conventional problems, the present invention can reduce the variation in skew of paper, Another object of the present invention is to provide a paper feeding device capable of easily adjusting skew.
【０００８】[0008]
本考案は、上記目的を達成するため、所定方向に給紙すべき用紙を積載収納す る用紙積載手段と、該用紙積載手段に積載された最上紙の給紙方向に対して前端 部に当接して前記最上紙に働く反給紙力に抗して該最上紙から送出する給紙ロー ルと、前記反給紙力の中心点よりも前記最上紙表面の給紙方向に対して上流側に 当接して前記給紙ロールによる送出の際の前記反給紙力の中心点の位置を上流側 にずらすことで斜行を補正する摩擦部材とを備えることを特徴とする。 In order to achieve the above object, the present invention stacks and stores sheets to be fed in a predetermined direction. And a front end with respect to the feeding direction of the uppermost paper stacked on the paper stacking means. Paper feed roller that feeds from the topmost paper against the anti-feeding force that acts on the topmost paper by abutting against the sheet And upstream of the center point of the anti-feeding force with respect to the feeding direction of the uppermost paper surface. The position of the center point of the anti-feeding force at the time of contact and feeding by the paper feeding roll is set to the upstream side. And a friction member that corrects the skew by shifting to the front.
【０００９】[0009]
以下、本考案の実施例について、図面を参照しながら説明する。 図１は本考案の第１実施例の要部構成図であり、図２（ａ）、（ｂ）はそれぞ れ同実施例に係る斜行補正用の摩擦部材の正面図と平面図である。また、図３は 同実施例の給紙装置を組み込んだプリンタ装置の全体図であり、図４は同プリン タ装置およびこれに着脱自在な給紙カセットの外観斜視図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of the essential parts of a first embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are respectively 3A and 3B are a front view and a plan view of a skew correction friction member according to the embodiment. Also, in FIG. FIG. 4 is an overall view of a printer device incorporating the paper feeding device of the embodiment, and FIG. FIG. 3 is a perspective view of the external appearance of a paper feeding device and a paper feed cassette that can be detachably attached to the paper feeding device.
【００１０】 本実施例の給紙装置は、図１に示すように、用紙積載手段としての給紙カセッ ト１内の可動底板１ａ上に所定サイズの用紙Ｐが積載されており、可動底板１ａ が底板押上げ部材２によって矢印Ｂ方向に付勢されることにより、上記積載され た用紙Ｐの前端部がその幅方向の略中央に位置する給紙ロール３の周面に圧接さ れている。また、積載された用紙Ｐの側端と後端は、給紙カセット１内に設けら れたサイド規制板１ｂと後端規制板１ｃによってそれぞれ規制され整えられてい る。更に、給紙方向（矢印Ａ方向）に沿って給紙カセット１よりも下流側には、 給紙ロール３と対向する位置に捌き部材４が配設され、この捌き部材４の摩擦パ ッド４ａが給紙ロール３の周面に圧接されている。ここまでは、図８に示した従 来の給紙装置と同様な構成である。[0010] As shown in FIG. 1, the sheet feeding device of the present embodiment has a sheet feeding cassette as a sheet stacking unit. A sheet P having a predetermined size is stacked on the movable bottom plate 1a in the tray 1. Is urged in the direction of arrow B by the bottom plate pushing-up member 2 so that The front end of the paper P is pressed against the peripheral surface of the paper feed roll 3 located at the approximate center in the width direction. Has been. Further, the side edge and the rear edge of the stacked sheets P are provided in the sheet feeding cassette 1. Are regulated and arranged by the side regulating plate 1b and the rear end regulating plate 1c, respectively. It Further, along the paper feeding direction (direction of arrow A), on the downstream side of the paper feeding cassette 1, A separating member 4 is arranged at a position facing the paper feed roll 3, and the friction member of the separating member 4 is disposed. The pad 4 a is pressed against the peripheral surface of the paper feed roll 3. Up to this point, the slave shown in FIG. It has the same structure as a conventional paper feeding device.
【００１１】 本実施例は、更に、給紙カセット１内に積載された用紙Ｐの最上紙表面の給紙 方向に対して上流側である後端部側に当接する斜行補正用の摩擦部材５を備えて いる。この摩擦部材５は、詳しくは図２に示すように、プリンタ装置本体側に取 り付けられ用紙の幅方向を中心軸として矢印Ｃ、Ｄ方向に回動可能な回転軸５ａ に、板ばね材等からなるアーム５ｂの一端が固定ねじ５ｃで固定され、アーム５ ｂの他端の下面部にはコルク材等でできた摩擦パッド５ｄが取り付けてあり、こ の摩擦パッド５ｄが摩擦部材５の自重により（または弱いばねの付勢力により） 上記最上紙表面の後端部側に当接可能な構成となっている。摩擦パッド５ｄの形 状は任意であり、用紙表面と面接触するものであってもよく、線接触するもので あってもよく、あるいは点接触するものであってもよい。なお、アーム５ｂの上 記一端には、図２（ｂ）に示すように回転軸５ａの軸方向に長い長孔５ｅが形成 され、この長孔５ｅを介してアーム５ｂが固定ねじ５ｃにより回転軸５ａに固定 されることから、アーム５ｂの固定位置は矢印Ｅ方向に適宜調整可能である。こ のように構成された斜行補正用の摩擦部材５は、給紙カセット１をプリンタ装置 本体に装着した際、底板押上げ部材２と連動して摩擦パッド５ｄが最上紙表面に 当接するようにセットされる。そのための構成は後述する第２実施例（図６）の 構成と共通するので、ここではその具体的な説明を省略する。[0011] In this embodiment, further, the uppermost sheet surface of the sheets P stacked in the sheet feeding cassette 1 is fed. And a friction member 5 for correcting skew feeding, which is in contact with the rear end side which is the upstream side with respect to the direction. There is. This friction member 5 is mounted on the printer body side as shown in detail in FIG. A rotation shaft 5a which is attached and is rotatable in the directions of arrows C and D with the width direction of the paper as the central axis. , One end of the arm 5b made of a leaf spring material or the like is fixed by a fixing screw 5c, A friction pad 5d made of cork material or the like is attached to the lower surface of the other end of b. The friction pad 5d of is caused by the weight of the friction member 5 (or by the biasing force of the weak spring). It is configured so that it can come into contact with the rear end side of the uppermost paper surface. Shape of friction pad 5d The shape is arbitrary and may be in surface contact with the surface of the paper, or in line contact. It may be present or may be in point contact. In addition, on the arm 5b As shown in FIG. 2B, a long hole 5e that is long in the axial direction of the rotary shaft 5a is formed at one end. The arm 5b is fixed to the rotary shaft 5a by the fixing screw 5c through the elongated hole 5e. Therefore, the fixed position of the arm 5b can be appropriately adjusted in the arrow E direction. This The skew-feeding friction member 5 configured as described above is used for loading the paper feed cassette 1 into a printer device. When mounted on the main body, the friction pad 5d is interlocked with the bottom plate pushing member 2 to the uppermost paper surface. It is set so as to abut. The configuration for that is the same as that of the second embodiment (FIG. 6) described later. Since the configuration is common, the detailed description thereof is omitted here.
【００１２】 なお、図３に示したプリンタ装置は電子写真方式を採用したものであり、待機 ロール対１１、感光体ドラム１２、帯電器１３、印字ヘッド１４、現像器１５、 転写器１６、クリーナ１７、定着器１８等を含み、本実施例の給紙装置から給送 された用紙上に印字情報に基づく画像形成を行った後に用紙を装置外へ排出する 構成となっている。プリンタ装置本体への給紙カセット１の出し入れは、例えば 図４に示すように操作部Ｒのある正面側から矢印Ｆ方向に行われる。[0012] The printer device shown in FIG. 3 adopts the electrophotographic method, and Roll pair 11, photoconductor drum 12, charger 13, print head 14, developing device 15, A transfer device 16, a cleaner 17, a fixing device 18, etc. are included, and the paper is fed from the paper feeding device of this embodiment. After the image formation based on the print information is performed on the printed paper, the paper is ejected from the device. It is composed. For example, when inserting / removing the paper feed cassette 1 into / from the printer apparatus main body, As shown in FIG. 4, the operation is performed in the arrow F direction from the front side where the operation unit R is located.
【００１３】 以上のような構成からなる本実施例の給紙装置において、給紙時には、不図示 の制御手段による給紙ロール３の回転制御に基づき給紙カセット１内の用紙Ｐの 最上紙が給送されて、給紙ロール３と摩擦パッド４ａ間に案内され、もしここに 最上紙を含む２枚以上の用紙が案内されてきた場合には摩擦パッド４ａにより１ 枚ずつ捌かれながら送出される。そして、上記給紙ロール３による給紙の際、斜 行補正用の摩擦部材５が用紙表面に当接していることにより、その用紙には給紙 方向とは逆向きの力が加わることになり、以下のような原理で斜行のばらつきを 小さく抑えることができる。[0013] In the sheet feeding device of the present embodiment having the above-described configuration, not shown when feeding Of the paper P in the paper feed cassette 1 based on the rotation control of the paper feed roll 3 by the control means of The top paper is fed and guided between the paper feed roll 3 and the friction pad 4a. When two or more sheets including the uppermost sheet are guided, the friction pad 4a causes 1 It is sent out while being handled one by one. Then, when the paper is fed by the paper feed roll 3, Since the line-correction friction member 5 is in contact with the surface of the paper, the paper is fed to the paper. A force in the opposite direction to the direction will be applied, and the variation of skew will be corrected by the following principle. It can be kept small.
【００１４】 図５に、給紙時に用紙に加わる力の関係を示す。同図において、Ｆは給紙ロー ル３による給紙力、点Ｏは給紙力Ｆの加わる中心点（給紙ロール３による加圧中 心）、ｆは給紙される用紙（最上紙）に働く反給紙力であって上記給紙力Ｆに対 する反作用力として加わる摩擦力（すなわち２枚目の用紙との摩擦力、サイド規 制板１ｂとの摩擦力、摩擦パッド５ｄとの摩擦力等、最上紙に加わる各種摩擦力 を全て加えた力であり、その大きさはＦに等しく、向きはＦと反対である）、点 Ｑは摩擦力ｆの加わる中心点である。また、従来との比較のために、ｆ′は図８ に示したような従来の給紙装置における摩擦力（これには摩擦パッド５ｄとの摩 擦力は含まれない）、点Ｑ′は従来における摩擦力ｆ′の加わる中心点である。[0014] FIG. 5 shows the relationship of the force applied to the paper at the time of paper feeding. In the figure, F is the paper feed low. The paper feeding force by point 3 and the point O are the center points to which the paper feeding force F is applied (during pressurization by the paper feeding roll 3 ), F is the anti-feeding force acting on the fed paper (topmost paper), and is the opposite of the paper feeding force F. Friction force applied as a reaction force (that is, the friction force with the second sheet, Various frictional forces applied to the top paper such as frictional force with the control plate 1b and frictional force with the friction pad 5d. , The magnitude of which is equal to F and the direction is opposite to F), point Q is a central point to which the frictional force f is applied. Further, for comparison with the conventional one, f ′ is shown in FIG. The frictional force in the conventional paper feeding device as shown in FIG. The frictional force is not included), and the point Q'is the central point to which the conventional frictional force f'is applied.
【００１５】 同図に明らかなように、本実施例では、摩擦部材５の摩擦パッド５ｄが最上紙 の後端部側（点Ｑ′よりも上流側）と当接した状態で給紙されることにより、摩 擦力ｆの加わる中心点Ｑが従来の中心点Ｑ′よりも後端部側へ大きく移動する。 すなわち、図５（ｂ）に示すように、点Ｏから点Ｑまでの距離Ｌが点Ｏから点Ｑ ′までの距離Ｌ′よりも相当に長くなる。ここで、例えば用紙の摩擦係数のばら つき等により点Ｑ、Ｑ′が変動し、図５（ｂ）に示すように用紙の中心線Ｈから ずれて点Ｑ1 、Ｑ1 ′となったとすると、これに伴い給紙力Ｆの方向がＦ1 、Ｆ 1 ′とばらつくことになり、これが斜行ばらつきを引き起こす原因となる。そし て、この斜行ばらつき角度θ1 、θ1 ′は点Ｏから点Ｑ、Ｑ′までの距離Ｌ、Ｌ ′に依存しており、本実施例のように距離Ｌを相当に長くした場合の斜行ばらつ き角度θ1 は、従来の距離Ｌ′の場合における斜行ばらつき角度θ1 ′と比べて 著しく小さくなり、より安定した給紙が可能になる。従って、摩擦部材５の摩擦 パッド５ｄが最上紙と当接する位置はできるだけ用紙後端側が望ましい。[0015] As is clear from the figure, in this embodiment, the friction pad 5d of the friction member 5 is the top paper. The paper is fed in contact with the rear end side (upstream of the point Q ′) of The center point Q to which the frictional force f is applied moves to the rear end side more than the conventional center point Q '. That is, as shown in FIG. 5B, the distance L from the point O to the point Q is from the point O to the point Q. It is considerably longer than the distance L'to '. Here, for example, the variation of the coefficient of friction of paper The points Q and Q'change due to shading and the like, and as shown in FIG. Point Q1, Q1′, The direction of the paper feeding force F is F1, F 1 ′, Which causes skew variations. That This skew variation angle θ1, Θ1′ Is the distance L, L from the point O to the points Q, Q ′ ′, And the skew variation when the distance L is considerably lengthened as in the present embodiment. Angle θ1Is the skew variation angle θ for the conventional distance L ′.1Compared to ' Remarkably smaller, more stable paper feeding is possible. Therefore, the friction of the friction member 5 The position where the pad 5d abuts on the uppermost sheet is preferably on the trailing edge side of the sheet as much as possible.
【００１６】 以上に述べたように、本実施例によれば、給紙の際、用紙前端部に給紙ロール ３が当接して用紙を繰り出す場合に、用紙後端部に当接する摩擦部材５を設けた ことで点Ｑが後方に大きくずれ、よって、たとえ斜行が発生したとしても斜行ば らつき角度θ1 が非常に小さくなり、用紙が本来の給紙方向に極めて平行となっ て給紙できるようになる。従って、組み立て時には、図２（ｂ）に示すように摩 擦部材５のアーム５ｂを矢印Ｅ方向へ適宜シフトさせるだけで、図５（ｂ）に示 す点Ｑ1 の位置を中心線Ｈにできるだけ近づけて斜行ばらつき角度θ1 をほぼゼ ロにすることができるので、組み立て調整が極めて容易となる。また、用紙の種 類等の変化に対応して斜行ばらつきを小さく抑えることができるので、根本的に 斜行発生がしずらくなるという利点もある。更に、上述したように単にアーム５ ｂの位置を調整するだけで斜行調整を行うことができるので、仮に何らかの原因 で斜行が発生したとしても、サービスマンを呼ぶまでもなくユーザーが容易に調 整することができる。As described above, according to the present embodiment, when the paper is fed and the paper feed roll 3 comes into contact with the front end of the paper to feed the paper, the friction member 5 comes into contact with the rear end of the paper. By providing the point Q, the point Q is largely displaced rearward, so that even if skew occurs, the skew variation angle θ 1 becomes extremely small, and the sheet becomes extremely parallel to the original sheet feeding direction. become able to. Therefore, at the time of assembly, the arm 5b of the friction member 5 can be appropriately shifted in the direction of arrow E as shown in FIG. 2B to bring the position of the point Q 1 shown in FIG. 5B as close to the center line H as possible. Since the skew variation angle θ 1 can be set to almost zero, the assembly and adjustment becomes extremely easy. In addition, since skew variation can be suppressed to a small level in response to changes in the type of paper, there is also an advantage that skew is fundamentally less likely to occur. Further, as described above, the skew feeding can be performed by simply adjusting the position of the arm 5b. Therefore, even if the skew is caused for some reason, the user can easily call it without calling a service person. Can be adjusted.
【００１７】 次に、図６は本考案の第２実施例に係る摩擦部材の位置調整機構および摩擦部 材と底板押上げ部材の連動機構を示す斜視図であり、図７は上記位置調整機構の 要部の拡大断面図である。[0017] Next, FIG. 6 illustrates a position adjusting mechanism and a friction portion of a friction member according to a second embodiment of the present invention. FIG. 8 is a perspective view showing an interlocking mechanism of the material and the bottom plate pushing-up member, and FIG. 7 shows the position adjusting mechanism. It is an expanded sectional view of an important section.
【００１８】 前記第１実施例では、上述したように摩擦部材５の作用により斜行発生頻度を 大幅に減少できるので、通常、組み立て時に摩擦部材５を一旦セットしてしまえ ば、それ以後は摩擦部材５の位置を頻繁に調整する必要がなくなり、図２に示し た構成で十分と言えるが、摩擦部材５の位置をより手軽に調整できるように構成 することもできる。第２実施例は、そのような摩擦部材５の位置調整機構を設け た点を特徴としている。[0018] In the first embodiment, as described above, the operation of the friction member 5 reduces the skew occurrence frequency. Since it can be greatly reduced, normally set the friction member 5 once during assembly. Then, after that, it is not necessary to adjust the position of the friction member 5 frequently, and as shown in FIG. Although it can be said that the above configuration is sufficient, it is configured so that the position of the friction member 5 can be adjusted more easily. You can also do it. The second embodiment is provided with such a position adjusting mechanism for the friction member 5. It is characterized by
【００１９】 まず、摩擦部材５と底板押上げ部材２の連動機構について説明する。この連動 機構の構成は前記第１実施例にも共通である。 図６において、給紙カセット１の底板１ａ（図１）を押上げる機構として回転 軸２ａに押上げレバー２ｂを一体化してなる底板押上げ部材２が設けられており 、回転軸２ａは不図示のばねにより通常は底板１ａを押上げる方向（矢印Ｂ方向 ）に付勢されている。そして、図４中の操作レバー２０と回転軸２ａとが連動し ており、操作レバー２０を下方へ動かす操作を手動で行うことにより、回転軸２ ａおよび押上げレバー２ｂを底板１ａを下げる方向に移動させることができる。 このような操作を行うことで、不図示のロック機構が働き、押上げレバー２ｂが 底板１ａへの当接状態の解除される位置（図６に示す位置）にロックされ、この 状態で、図４に示したように給紙カセット１をプリンタ装置本体の操作部Ｒのあ る正面側から矢印Ｆ方向に自由に出し入れすることが可能となる。このような状 態で給紙カセット１を装置本体に装着すると、上記ロックが解除され、押上げレ バー２ｂが上記不図示のばねにより図５の矢印Ｂ方向に回動し、これに伴い給紙 カセット１の底板１ａが押上げられる。[0019] First, the interlocking mechanism of the friction member 5 and the bottom plate lifting member 2 will be described. This interlocking The structure of the mechanism is common to the first embodiment. In FIG. 6, the bottom plate 1a (FIG. 1) of the paper feed cassette 1 is rotated as a mechanism for pushing it up. The bottom plate pushing-up member 2 in which the pushing-up lever 2b is integrated with the shaft 2a is provided. , The rotating shaft 2a is normally pushed up by a spring (not shown) in the direction of pushing up the bottom plate 1a (direction of arrow B). ). Then, the operating lever 20 and the rotary shaft 2a in FIG. The rotation shaft 2 is manually operated by moving the operation lever 20 downward. It is possible to move a and the push-up lever 2b in the direction of lowering the bottom plate 1a. By performing such an operation, a lock mechanism (not shown) operates, and the push-up lever 2b moves. It is locked at a position (position shown in FIG. 6) where the contact state with the bottom plate 1a is released. In this state, as shown in FIG. 4, the paper feed cassette 1 is attached to the operation portion R of the printer main body. It is possible to freely move in and out from the front side in the direction of arrow F. Like this When the paper feed cassette 1 is attached to the main body of the device in the state of The bar 2b is rotated in the direction of arrow B in FIG. The bottom plate 1a of the cassette 1 is pushed up.
【００２０】 また、回転軸２ａの奥側には一体的にアーム２ｃが設けられ、このアーム２ｃ が、軸６ａを支点に揺動自在なリンク棒６の一端に軸２ｄで連結されている。 一方、斜行補正用の摩擦部材５は、プリンタ装置本体側のフレーム２１、２２ に対して回動自在に設けられた回転軸５ａの略中央部に板ばね状のアーム５ｂの 一端が固定され、アーム５ｂの他端には摩擦パッド５ｄが取り付けられている。 回転軸５ａとアーム５ｂは、図２に示したように長孔５ｅと固定ねじ５ｃとによ り固定される構成であってもよく、あるいは一体化された構成であってもよい。 また、回転軸５ａの奥側の一端には軸方向に或る程度の幅を有する係合部５ｆが 設けられ、リンク棒６の一端部６ｂと当接可能になっている。なお、係合部５ｆ の幅は、後述する位置調整機構７により回転軸５ａが軸方向に最大限移動した場 合であってもリンク棒６の一端部６ｂとの係合が外れない程度に余裕を持たせて ある。[0020] An arm 2c is integrally provided on the back side of the rotary shaft 2a. Is connected by a shaft 2d to one end of a link rod 6 which is swingable about the shaft 6a. On the other hand, the skew correction friction member 5 includes the frames 21 and 22 on the printer body side. A leaf spring-shaped arm 5b is provided at a substantially central portion of a rotary shaft 5a that is rotatable with respect to One end is fixed, and a friction pad 5d is attached to the other end of the arm 5b. As shown in FIG. 2, the rotary shaft 5a and the arm 5b are fixed by the elongated hole 5e and the fixing screw 5c. The structure may be fixed, or the structure may be integrated. Further, an engaging portion 5f having a certain width in the axial direction is provided at one end on the inner side of the rotating shaft 5a. It is provided so that it can come into contact with one end 6b of the link rod 6. The engaging portion 5f The width of is when the rotary shaft 5a is moved to the maximum in the axial direction by the position adjusting mechanism 7 described later. Even if they are combined, allow a margin so that the engagement with the one end 6b of the link rod 6 does not come off. is there.
【００２１】 今、底板押上げ部材２の押上げレバー２ｂが図６のように給紙カセット１を着 脱可能な下方位置にある時、摩擦部材５の係合部５ｆがリンク棒６の一端部６ｂ と係合することにより、摩擦パッド５ｄは給紙カセット１内の用紙から離れた上 方位置に静止している。ここで、給紙カセット１を装着することにより押上げレ バー２ｂが矢印Ｂ方向へ回動して給紙カセット１の底下１ａを押上げると、アー ム２ｃも矢印Ｇ方向へ回動するので、これに伴いリンク棒６の一端部６ｂが矢印 Ｈ方向に回動し、係合部５ｆと係合しない下方位置へ退避する。すると、摩擦部 材５の自重により（または弱いばねの付勢力により）摩擦パッド５ｄが降下して 給紙カセット１内の用紙表面の後端部側に当接する。このようにして底板押上げ 部材２と摩擦部材５とが連動することで、給紙可能な状態となる。[0021] Now, the push-up lever 2b of the bottom plate push-up member 2 attaches the paper feed cassette 1 as shown in FIG. When in the detachable lower position, the engaging portion 5f of the friction member 5 is engaged with the one end portion 6b of the link rod 6. The friction pad 5d is separated from the paper in the paper feed cassette 1 by engaging with It is stationary in one direction. Here, by mounting the paper feed cassette 1, When the bar 2b rotates in the direction of arrow B and pushes up the bottom bottom 1a of the paper feeding cassette 1, Since the frame 2c also rotates in the direction of the arrow G, the one end 6b of the link rod 6 is accordingly moved in the direction of the arrow. It rotates in the H direction and retracts to a lower position where it does not engage with the engaging portion 5f. Then the friction part The friction pad 5d is lowered due to the weight of the material 5 (or due to the biasing force of the weak spring). It abuts on the rear end side of the paper surface in the paper feed cassette 1. Push up the bottom plate in this way Since the member 2 and the friction member 5 are interlocked with each other, the sheet can be fed.
【００２２】 次に、第２実施例に独自な構成である摩擦部材５の位置調整機構７について述 べる。 位置調整機構７は、その調整ダイアル７３を操作することにより、摩擦部材５ が給紙カセット１内の最上紙表面と当接する位置を用紙の幅方向に移動調整する 調整手段であり、回転軸５ａにおける係合部５ｆとは反対側の一端に連結されて いる。具体的には図７に示すように、まず、摩擦部材５の回転軸５ａがフレーム ２２に滑り軸受部２３を介して回動自在かつ軸方向（矢印Ｉ方向）へ摺動自在に 支持されており、その端部にはその周面に沿った溝５ｇが形成され、この溝５ｇ に外嵌する形で、矢印Ｉ方向へ移動可能な移動軸７１が連結されている。回転軸 ５ａは移動軸７１に対し周方向へ回転自在である。また、移動軸７１の周面の一 部には軸方向に沿って長い凸部７１ａが設けられ、この凸部７１ａが装置本体側 フレームのガイドレール７２と係合することで、移動軸７１は回転することなく 軸方向への移動のみが可能となっている。移動軸７１の周面には雄ねじ部７１ｂ が形成され、調整ダイアル７３の雌ねじ部７３ａと螺着されている。調整ダイア ル７３は装置本体側のフレーム２４に軸受部２５を介し矢印Ｊ方向に回動自在に 支持されており、更に調整ダイアル７３がフレーム２４から抜けないように調整 ダイアル７３の奥側端面にねじ７４で抜け止め部材７５が取り付けられている。 この調整ダイアル７３は、例えば図４の前面カバーＴを開けると操作できるよう になっている。[0022] Next, the position adjusting mechanism 7 for the friction member 5 having a unique structure to the second embodiment will be described. Bell. The position adjustment mechanism 7 operates the adjustment dial 73 to operate the adjustment member 73. Adjusts the position in which the paper comes into contact with the uppermost paper surface in the paper feed cassette 1 in the width direction of the paper. It is an adjusting means, and is connected to one end of the rotating shaft 5a opposite to the engaging portion 5f. There is. Specifically, as shown in FIG. 7, first, the rotary shaft 5a of the friction member 5 is set to the frame. 22 through a slide bearing portion 23 so as to be rotatable and slidable in the axial direction (direction of arrow I) It is supported, and a groove 5g is formed at its end along the peripheral surface thereof. A moving shaft 71 that is movable in the direction of the arrow I is connected to the outside in such a manner as to be fitted on the outside. Axis of rotation 5a is rotatable in the circumferential direction with respect to the moving shaft 71. In addition, one of the circumferential surfaces of the moving shaft 71 The portion is provided with a long convex portion 71a along the axial direction, and the convex portion 71a is on the apparatus main body side. By engaging the guide rail 72 of the frame, the moving shaft 71 does not rotate. Only movement in the axial direction is possible. A male screw portion 71b is provided on the peripheral surface of the moving shaft 71. Is formed, and is screwed to the female screw portion 73a of the adjustment dial 73. Adjustment dia The lever 73 is rotatable in the arrow J direction through the bearing 25 on the frame 24 on the apparatus main body side. It is supported and adjusted so that the adjustment dial 73 does not come off the frame 24. A retaining member 75 is attached to the rear end surface of the dial 73 with a screw 74. This adjustment dial 73 can be operated, for example, by opening the front cover T shown in FIG. It has become.
【００２３】 このような構成において、調整ダイアル７３を矢印Ｊ方向に操作することで、 移動軸７１を介し回転軸５ａが矢印Ｉ方向に移動し、よって、摩擦パッド５ｄの 用紙との当接点を用紙の幅方向（給紙方向とは略直交する方向）に微妙に調整す ることが可能となる。[0023] In such a configuration, by operating the adjustment dial 73 in the arrow J direction, The rotary shaft 5a moves in the direction of the arrow I through the moving shaft 71, so that the friction pad 5d Subtly adjust the contact point with the paper in the width direction of the paper (direction substantially orthogonal to the paper feed direction). It is possible to
【００２４】 従って、本実施例によれば、工場での組み立ての際の調整は勿論、装置が長期 にわたり使用されて、仮に斜行が発生するような悪い状況となった場合にも、ユ ーザーが調整ダイアル７３を操作するだけで、極めて簡単に、しかも精度良く斜 行補正を行うことができる。[0024] Therefore, according to the present embodiment, the device can be adjusted for a long period of time as well as adjustment at the time of assembly in the factory. Even if it is used for a long time and it becomes a bad situation that skewing occurs, The user only operates the adjustment dial 73 and the tilting is extremely easy and precise. Line correction can be performed.
【００２５】 なお、図１や図３には捌き部材４による捌き給紙方式を採用した給紙装置を示 したが、本考案は必ずしもこのような給紙装置にのみ適用されるべきものではな い。[0025] It should be noted that FIGS. 1 and 3 show a sheet feeding device adopting a sorting sheet feeding method using a sorting member 4. However, the present invention should not necessarily be applied only to such a sheet feeding device. Yes.
【００２６】 また、用紙積載手段として、上記実施例ではプリンタ装置本体に対し着脱自在 なカセット状のものを使用したが、これに限定されるものではなく、例えばプリ ンタ装置本体に固定的に組み込まれたトレイ状のものであってもよいことは勿論 である。[0026] Further, as the sheet stacking means, in the above embodiment, it is detachable from the printer main body. I used a simple cassette, but it is not limited to this, for example Of course, it may be a tray type fixedly incorporated in the main body of the input device. Is.
【００２７】 更に、本考案は、プリンタ装置のみならず、複写機、ファクシミリ装置等、所 定サイズ用紙の給送を必要とする各種装置に適応可能である。[0027] Furthermore, the present invention is applicable not only to printer devices, but also to copiers, facsimile devices, etc. It can be applied to various devices that require feeding of fixed size paper.
【００２８】[0028]
本考案によれば、用紙の前端部に当接する給紙ロールによって給紙される最上 紙に働く反作用力の中心点を用紙の後端部側にシフトさせるべく摩擦部材を給紙 ロールの上流側に当接させるようにしたので、用紙の斜行のばらつきを小さくす ることができ、しかも根本的に斜行発生を抑えることができる。更に、組み立て 時には、摩擦部材の位置を調整するだけで斜行ばらつきを小さく抑えることがで きるので、組み立て調整が極めて容易となるばかりか、仮に何らかの原因で斜行 が発生したとしても、サービスマンを呼ぶまでもなくユーザーが容易に調整する ことができる。 According to the present invention, the uppermost sheet fed by the sheet feeding roll that abuts on the front end of the sheet. A friction member is fed to shift the center point of the reaction force acting on the paper to the trailing edge of the paper. Since it comes into contact with the upstream side of the roll, it is possible to reduce variations in skew of the paper. It is possible to prevent the occurrence of skewing. Furthermore, the assembly Occasionally, it is possible to reduce skew variation by simply adjusting the position of the friction member. As a result, not only is assembly and adjustment extremely easy, but it is possible that Even if a problem occurs, the user can easily adjust it without calling a serviceman. be able to.
【００２９】 更に、摩擦部材を給紙方向と略直交する方向に移動調整する調整手段を設けれ ば、ユーザーの手で、より簡単に斜行補正を行うことができる。[0029] Further, there is provided an adjusting means for moving and adjusting the friction member in a direction substantially orthogonal to the paper feeding direction. For example, the skew correction can be more easily performed by the user.
【図１】本考案の第１実施例の要部構成図である。FIG. 1 is a configuration diagram of a main part of a first embodiment of the present invention.
【図２】同実施例に係る斜行補正用の摩擦部材を示す図
であり、（ａ）は正面図、（ｂ）は平面図である。2A and 2B are views showing a friction member for skew feeding correction according to the embodiment, wherein FIG. 2A is a front view and FIG. 2B is a plan view.
【図３】同実施例の給紙装置を組み込んだプリンタ装置
の全体図である。FIG. 3 is an overall view of a printer device incorporating the paper feeding device of the embodiment.
【図４】同プリンタ装置およびこれに着脱自在な給紙カ
セットの外観斜視図である。FIG. 4 is an external perspective view of the printer device and a paper feed cassette detachable from the printer device.
【図５】給紙時に用紙に加わる力の関係を示す図であ
る。FIG. 5 is a diagram showing a relationship between forces applied to a sheet at the time of sheet feeding.
【図６】本考案の第２実施例に係る摩擦部材の位置調整
機構および摩擦部材と底板押上げ部材の連動機構を示す
斜視図である。FIG. 6 is a perspective view showing a position adjusting mechanism of a friction member and an interlocking mechanism of a friction member and a bottom plate pushing member according to a second embodiment of the present invention.
【図７】同実施例に係る位置調整機構の要部の拡大断面
図である。FIG. 7 is an enlarged sectional view of a main part of the position adjusting mechanism according to the embodiment.
【図８】従来の給紙装置の要部構成図である。FIG. 8 is a configuration diagram of a main part of a conventional paper feeding device.
１ 給紙カセット １ａ 可動底板 ２ 底板押上げ部材 ２ａ 回転軸 ２ｂ 押上げレバー ３ 給紙ロール ４ 捌き部材 ４ａ 摩擦パッド ５ 摩擦部材 ５ａ 回転軸 ５ｂ アーム ５ｃ 固定ねじ ５ｄ 摩擦パッド ５ｅ 長孔 ５ｆ 係合部 ５ｇ 溝 ６ リンク棒 ７ 位置調整機構 ７１ 移動軸 ７２ ガイドレール ７３ 調整ダイアル 1 paper feed cassette 1a movable bottom plate 2 Bottom plate lifting member 2a rotating shaft 2b Push-up lever 3 paper feed rolls 4 Separation member 4a Friction pad 5 Friction member 5a rotating shaft 5b arm 5c fixing screw 5d friction pad 5e long hole 5f engagement part 5g groove 6 link bars 7 Position adjustment mechanism 71 Movement axis 72 Guide rail 73 Adjustment dial
Claims (2)
用紙積載手段と、 該用紙積載手段に積載された最上紙の給紙方向に対して
前端部に当接して前記最上紙に働く反給紙力に抗して該
最上紙から送出する給紙ロールと、 前記反給紙力の中心点よりも前記最上紙表面の給紙方向
に対して上流側に当接して前記給紙ロールによる送出の
際の前記反給紙力の中心点の位置を上流側にずらすこと
で斜行を補正する摩擦部材とを備えることを特徴とする
給紙装置。1. A sheet stacking unit for stacking and storing sheets to be fed in a predetermined direction, and an uppermost sheet which contacts the front end of the uppermost sheet stacked on the sheet stacking unit in the sheet feeding direction and acts on the uppermost sheet. A paper feed roll that feeds from the uppermost paper sheet against the anti-paper feed force, and the paper feed roll that abuts on the upstream side with respect to the paper feeding direction of the uppermost paper surface with respect to the center point of the anti-paper feed force. And a friction member that corrects the skew by shifting the position of the central point of the anti-feeding force to the upstream side when the sheet is fed.
位置を変えるべく前記給紙方向と略直交する方向に移動
調整する調整手段を有する請求項１記載の給紙装置。2. The paper feeding device according to claim 1, further comprising adjusting means for moving and adjusting the friction member in a direction substantially orthogonal to the paper feeding direction so as to change a contact position with the surface of the uppermost paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5699791U JPH0510360U (en) | 1991-07-22 | 1991-07-22 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5699791U JPH0510360U (en) | 1991-07-22 | 1991-07-22 | Paper feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0510360U true JPH0510360U (en) | 1993-02-09 |
Family
ID=13043132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5699791U Withdrawn JPH0510360U (en) | 1991-07-22 | 1991-07-22 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510360U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133360U (en) * | 1974-04-20 | 1975-11-01 | ||
| JPS52103960U (en) * | 1975-09-05 | 1977-08-08 | ||
| JP2009249142A (en) * | 2008-04-09 | 2009-10-29 | Murata Mach Ltd | Image forming device |
-
1991
- 1991-07-22 JP JP5699791U patent/JPH0510360U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133360U (en) * | 1974-04-20 | 1975-11-01 | ||
| JPS52103960U (en) * | 1975-09-05 | 1977-08-08 | ||
| JPS5337886Y2 (en) * | 1975-09-05 | 1978-09-13 | ||
| JP2009249142A (en) * | 2008-04-09 | 2009-10-29 | Murata Mach Ltd | Image forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19951102 |