JPH02270729A - Sheet feeder - Google Patents

Sheet feeder

Info

Publication number
JPH02270729A
JPH02270729A JP9213889A JP9213889A JPH02270729A JP H02270729 A JPH02270729 A JP H02270729A JP 9213889 A JP9213889 A JP 9213889A JP 9213889 A JP9213889 A JP 9213889A JP H02270729 A JPH02270729 A JP H02270729A
Authority
JP
Japan
Prior art keywords
sheet
width
cassette
main body
sheets
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
JP9213889A
Other languages
Japanese (ja)
Inventor
Masato Otsuka
正人 大塚
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9213889A priority Critical patent/JPH02270729A/en
Publication of JPH02270729A publication Critical patent/JPH02270729A/en
Pending legal-status Critical Current

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  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To prevent a width restricting member from being inadvertently moved and prevent the occurrence of the forming drift of an image due to the feeding drift of a sheet by making part of the width restricting member couplable with a device main body at multiple places. CONSTITUTION:A width restricting member 5 brought into contact with the end side of sheets in the conveyance width direction to restrict the position of sheets in the conveyance width direction is movably provided. The coupling piece 5c of the width restricting member 5 is coupled with the coupling groove 12a or 12b of a reference positioning section 12 protruded on a device main body 4. As a result, this width restricting member 5 is prevented from being inadvertently moved, and the positioning drift between the sheets restricted by the width restricting member 5 and the device can be prevented.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は複写機やプリンタ等の給紙部に用いられるシー
ト供給装置に係り、特に、各種サイズのシートを積載可
能なものに関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sheet feeding device used in a paper feeding section of a copying machine, a printer, etc., and particularly to one capable of stacking sheets of various sizes.

[従来の技術] 従来、複写機やブリンク等の給紙部のシート供給方式と
しては、給紙カセットを用いた方式が広く採用されてい
る。そして、所定サイズにカットされた各種サイズのシ
ートを積載可能なシート供給装置としては第6図および
第7図(a) 、 (b)に示すようなものがある。(
なお、第7図(a)はカセットを上から見た図であり、
同図(b)は同図(a)を裏から見た図である) これは第6図に示すような、シートSを積載したカセッ
ト101を装置本体+02に設けたカセット装填部10
3へ装着すると、リフタ板104が上昇動し、このリフ
タ板+04は上記カセット101の中板105を押し上
げ、所定位置に達した時点でシートSは給紙ローラ10
6によって順次給紙されるものである。そして、上記カ
セット101に各種サイズの異なるシートSを積載する
ため第7図(a)、(b)に示すように、カセット10
1のカセットおけ107内において上記シートSの搬送
幅方向の位置を規制する幅規制部材としての幅規制板1
08が配設されるとともに、上記シートSの搬送方向の
位置を規制する後端規制部材としての後端規制板109
が配設され、これらの規制板108.109はそれぞれ
自由にスライドすることにより移動自在に設けられてい
る。そしてさらに、カセット101がカセット装填部1
03へ装着されると、第8図に示すように上記カセット
101は押さえバネ110によって基準部材111に押
し付けられることにより、シートSと装置本体102と
の位置決めがなされるものであった・ [発明が解決しようとする課題] ところで、上記従来例のように幅規制板108をスライ
ドさせることで、各種サイズのシートSに対応させるシ
ート供給装置においては、シートSを確実に保持するた
めには幅規制板108のスライド動作に要する力(以下
、固着力という)を大きく設定する必要があるが、各種
サイズのシートSに対して簡単な調整で対応可能とする
ためには上記固着力を小さく設定する方が好ましい。し
たがって、このような相反する条件を満足するため、一
般には、積載されるべきシートSの標準積載量を設け、
この標準積載量のシートSが確実に保持される最小値を
上記固着力の値として設定するものであった。
[Prior Art] Conventionally, a method using a paper feed cassette has been widely adopted as a sheet feeding method for a paper feed unit of a copying machine, a blink machine, or the like. Examples of sheet feeding devices that can load sheets of various sizes cut into predetermined sizes include those shown in FIGS. 6 and 7(a) and 7(b). (
In addition, FIG. 7(a) is a view of the cassette viewed from above.
Figure 6(b) is a view of Figure 6(a) seen from the back) This is a cassette loading section 10 in which a cassette 101 loaded with sheets S is provided in the apparatus main body +02 as shown in Figure 6.
3, the lifter plate 104 moves upward, and this lifter plate +04 pushes up the middle plate 105 of the cassette 101, and when the sheet S reaches a predetermined position, the sheet S is moved up by the paper feed roller 10.
6, the sheets are fed sequentially. In order to load sheets S of various sizes onto the cassette 101, as shown in FIGS. 7(a) and 7(b), the cassette 101 is
width regulating plate 1 as a width regulating member regulating the position of the sheet S in the transport width direction in the cassette holder 107 of 1;
08 is disposed, and a trailing edge regulating plate 109 serves as a trailing edge regulating member that regulates the position of the sheet S in the conveyance direction.
are arranged, and these regulating plates 108 and 109 are provided so as to be freely slidable and movable. Furthermore, the cassette 101 is loaded into the cassette loading section 1.
03, the cassette 101 is pressed against a reference member 111 by a presser spring 110, as shown in FIG. 8, thereby positioning the sheet S and the apparatus main body 102. By the way, in a sheet feeding device that can accommodate sheets S of various sizes by sliding the width regulating plate 108 as in the conventional example, it is necessary to adjust the width in order to securely hold the sheet S. Although it is necessary to set the force required for the sliding movement of the regulating plate 108 (hereinafter referred to as the adhesion force) to be large, the above adhesion force is set to be small in order to be able to accommodate sheets S of various sizes with simple adjustment. It is preferable to do so. Therefore, in order to satisfy such conflicting conditions, a standard loading amount of the sheets S to be loaded is generally established,
The minimum value at which the standard loading amount of sheets S is reliably held was set as the value of the above-mentioned fixing force.

しかしながら、上記従来例においては、シートSの積載
量が標準積載量以下であれば問題はないが、この標準積
載量を越える量のシートSを積載すると、シートSの重
量によって幅規制板108が動いてしまい、シートSと
装置本体102との位置決めがずれてしまう。また、幅
規制板108をスライドさせて各種サイズのシートSに
対応させるために、カセットおけ107を基準にしてス
ライド動作させていたので、このカセットおけ107自
体の精度やスライド動作後の位置精度等によりシートS
と装置本体102との位置決めがずれてしまうことがあ
った。
However, in the above conventional example, there is no problem as long as the loading amount of the sheets S is less than the standard loading amount, but if the amount of sheets S exceeding this standard loading amount is loaded, the width regulating plate 108 is caused by the weight of the sheets S. As a result, the seat S and the apparatus main body 102 are misaligned. In addition, in order to slide the width regulating plate 108 to accommodate sheets S of various sizes, the sliding operation was performed based on the cassette holder 107, so the accuracy of the cassette holder 107 itself and the positional accuracy after the sliding operation, etc. Sheet S
The positioning between the main body 102 and the main body 102 may be misaligned.

したがって、上記したシートSと装置本体102との位
置決めのずれにより、シートSの所定位置への画像形成
等もずれてしまうものであった。
Therefore, due to the misalignment between the sheet S and the apparatus main body 102 described above, image formation at a predetermined position on the sheet S also becomes misaligned.

本発明は上記した従来技術の課題を解決するためになさ
れたもので、その目的とするところは、多数枚のシート
を積載した場合においても、このシートを確実に規制し
、カセットの精度に左右されることなくシートと装置本
体との位置決めを行なうことにある。
The present invention has been made in order to solve the problems of the prior art described above, and its purpose is to reliably regulate the sheets even when a large number of sheets are stacked, thereby affecting the accuracy of the cassette. To perform positioning of a seat and a device main body without being affected.

[課題を解決するための手段] 上記目的を達成するため、本発明にあっては、転写材と
してのシートの搬送幅方向の端辺に当接して、このシー
トの搬送幅方向の位置を規制する幅規制部材と、シート
の搬送方向の端辺に当接して、このシートの搬送方向の
位置を規制する後端規制部材とを備え、これらの規制部
材をそれぞれ移動自在に設けることにより、各種サイズ
のシートを積載供給可能なシート供給装置において、上
記幅規制部材の一部が装置本体と複数箇所で係合するも
のとした。
[Means for Solving the Problems] In order to achieve the above object, in the present invention, the position of the sheet in the transport width direction is regulated by contacting the edge of the sheet as a transfer material in the transport width direction. and a trailing edge regulating member that comes into contact with the edge of the sheet in the conveying direction to regulate the position of the sheet in the conveying direction. By providing each of these restricting members movably, various In the sheet feeding device capable of stacking and supplying sheets of various sizes, a portion of the width regulating member engages with the device main body at a plurality of locations.

[作 用] 上記構成を有する本発明にあっては、シートの搬送幅方
向の端辺に当接して、このシートの搬送幅方向の位置を
規制する幅規制部材を移動自在に設け、この幅規制部材
の一部を装置本体と係合させるようにしたことで、この
幅規制部材は不用意に動くことが無くなるとともに、こ
の幅規制部材に規制されるシートと装置本体との位置決
めのずれが防止できる。
[Function] In the present invention having the above-mentioned configuration, a width regulating member is movably provided that comes into contact with the edge of the sheet in the conveying width direction to regulate the position of the sheet in the conveying width direction. By engaging a portion of the regulating member with the device body, this width regulating member does not move accidentally, and also prevents misalignment between the sheet regulated by the width regulating member and the device main body. It can be prevented.

[実施例] 本発明の第一実施例を第1図(a)、(b)ないし第3
図(a)、(b)に示し、その構成を第1図(a)、(
b)および第2図(a) 、 (b)に基づいて説明す
る。
[Example] A first example of the present invention is shown in FIGS. 1(a), (b) to 3.
The configuration is shown in Figures (a) and (b).
The explanation will be based on FIGS. 2(a) and 2(b).

(なお、第1図は第2図(a)のe−e線断面図、第2
図(a)はカセットを上から見た図、同図(b)は同図
(a)を裏から見た図である) 転写材としてのシートSを多数枚積載したカセット1は
、ベースとなるカセットおけ2と、このカセットおけ2
の内底部に回動自在に設けられた中板3とからなり、装
置本体4に設けられたカセット装填部(図示せず)へ着
脱自在に装着されるようになっている。そして、上記カ
セットおけ2内には上記シートSの搬送幅方向(この場
合、シートの短手方向)の位置を規制する幅規制部材5
が設けられるとともに、上記シートSの搬送方向(この
場合、シートの長手方向)の位置を規制する後端規制部
材6とが設けられている。ここで、上記幅規制部材5は
、シートSの搬送幅方向の端辺に当接する断面路り字状
の幅規制板5a、 5aと、カセットおけ2の略中央に
配設されたセンタギア6を挟んで係合するラックギア5
b、 5bと、装置本体4に係合可能な断面路り字状の
係合片5cと、後述の基準ガイド部11a、 llbと
からなり、この幅規制板5aとラックギア5bおよび係
合片5cとは上記カセットおけ2を挟んでビス7により
固定され、カセットおけ2に形成された横溝8内を一体
となってスライド自在に移動可能となっており、一方の
ラックギア5bを動かすと、同時に他方のラックギア5
bも動くようになっている。また、上記後端規制部材6
は、第3図(a)、(b)に示すように、シートSの搬
送方向の後端辺に当接する断面路り字状の後端規制板6
aと板バネ6bとからなり、この後端規制部材6aと板
バネ6bとは、前述の幅規制部材5と同様にカセットお
け2を挟んで固定されるとともに、この板バネ6bに設
けられた稜線6cが上記カセットおけ2の裏面に形成さ
れたローレット9に係合することで、上記後端規制部材
6は通常、シーt−Sの搬送方向に動くことがないが、
−室以上の力を加えることにより上記ローレット9の山
を稜線6cが乗り越えて縦溝10内を動くようになって
いる。さらに、上記カセットおけ2には中板3を上昇動
させるリフタ(図示せず)が入るためのりフタ孔13が
形成されている。そしてさらに、上記カセットおけ2の
リフタ孔13近傍には基準ガイド部11a、 llbが
装置本体4のに突設した基準位置決め部12を挟むへく
設けられており、この基準位置決め部12には上記幅規
制部材5の係合片5cの端部が係合する係合溝12a、
 +2bが形成されている。すなわち、上記係合片5c
が係合溝12aと係合するとき上記幅規制板5aはレタ
ーサイズのシートSに対応し、また、係合溝12bと係
合するときはA4サイズのシートSに対応した位置とな
っている。
(Note that Figure 1 is a sectional view taken along the line ee-e of Figure 2(a),
(Figure (a) is a view of the cassette viewed from above, and figure (b) is a view of figure (a) viewed from the back.) Cassette 1 loaded with a large number of sheets S as transfer materials is connected to a base. Naru cassette holder 2 and this cassette holder 2
It consists of a middle plate 3 rotatably provided on the inner bottom of the apparatus, and is detachably attached to a cassette loading section (not shown) provided in the main body 4 of the apparatus. Inside the cassette holder 2, there is a width regulating member 5 for regulating the position of the sheet S in the conveying width direction (in this case, the width direction of the sheet).
, and a rear end regulating member 6 for regulating the position of the sheet S in the conveying direction (in this case, the longitudinal direction of the sheet). Here, the width regulating member 5 includes width regulating plates 5a, 5a having a curved cross section that abuts the edges of the sheet S in the transport width direction, and a center gear 6 disposed approximately in the center of the cassette holder 2. Rack gear 5 that engages by pinching
b, 5b, an engagement piece 5c with a curved cross section that can be engaged with the device main body 4, and reference guide portions 11a and 11b (to be described later), and the width regulating plate 5a, rack gear 5b, and engagement piece 5c are fixed with screws 7 across the cassette holder 2, and can be slid together in a horizontal groove 8 formed in the cassette holder 2, so that when one rack gear 5b is moved, the other rack gear 5b is moved at the same time. rack gear 5
b is also set to move. In addition, the rear end regulating member 6
As shown in FIGS. 3(a) and 3(b), a trailing edge regulating plate 6 having a cross-sectional shape that comes into contact with the trailing edge of the sheet S in the conveying direction
a and a plate spring 6b, and the rear end regulating member 6a and the plate spring 6b are fixed across the cassette holder 2 in the same manner as the width regulating member 5 described above, and are provided on the plate spring 6b. Since the ridge line 6c engages with the knurling 9 formed on the back surface of the cassette holder 2, the trailing end regulating member 6 normally does not move in the transport direction of the sheet t-S.
- By applying a force greater than the chamber, the ridge line 6c overcomes the crest of the knurling 9 and moves within the vertical groove 10. Further, the cassette holder 2 is formed with a lid hole 13 into which a lifter (not shown) for lifting the middle plate 3 is inserted. Further, near the lifter hole 13 of the cassette holder 2, reference guide parts 11a and llb are provided to sandwich a reference positioning part 12 protruding from the main body 4 of the apparatus. an engagement groove 12a with which the end of the engagement piece 5c of the width regulating member 5 engages;
+2b is formed. That is, the engagement piece 5c
When engaged with the engagement groove 12a, the width regulating plate 5a corresponds to a letter-sized sheet S, and when engaged with the engagement groove 12b, the width regulating plate 5a is at a position corresponding to an A4-sized sheet S. .

次に本実施例の動作例を説明する。Next, an example of the operation of this embodiment will be explained.

まず、シートサイズに応じて幅規制部材5および後端規
制部材6の位置を移動調整させたカセット1にシートS
を積載し、このカセット1を装置本体4のカセット装填
部へ押し入れる。この時、上記カセット1はカセットお
け2の底部に設けられた基準ガイド部11a、 Ilb
によって上記装置本体4の基準位置決め部12を挟みつ
つ、この基準位置決め部12に形成された係合溝12a
または12bに幅規制部材5の係合片5cが係合した状
態で装着される。すなわち、装置本体4に対するカセッ
ト1の位置決めが確実になされるとともに、幅規制部材
5は所定位置からずれることがない。
First, the sheet S is placed in a cassette 1 in which the positions of the width regulating member 5 and the trailing edge regulating member 6 are adjusted according to the sheet size.
is loaded, and this cassette 1 is pushed into the cassette loading section of the main body 4 of the apparatus. At this time, the cassette 1 has reference guide portions 11a and Ilb provided at the bottom of the cassette holder 2.
The engagement groove 12a formed in the reference positioning part 12 while sandwiching the reference positioning part 12 of the device main body 4.
Alternatively, the width regulating member 5 is attached with the engaging piece 5c of the width regulating member 5 engaged with the width regulating member 12b. That is, the cassette 1 is reliably positioned with respect to the apparatus main body 4, and the width regulating member 5 does not shift from a predetermined position.

そして、シートサイズを変更するときは、−度カセット
1を上記カセット装填部より引き抜き、幅規制部材5お
よび後端規制部材6を移動調整して再度装着すればよい
When changing the sheet size, the -degree cassette 1 may be pulled out from the cassette loading section, the width regulating member 5 and the trailing end regulating member 6 may be moved and adjusted, and the cassette 1 may be reinstalled.

次に本発明の第二実施例を第4図および第5図に示し、
上記第一実施例と同一の部分には同一の符号を付して説
明する。
Next, a second embodiment of the present invention is shown in FIGS. 4 and 5,
The same parts as in the first embodiment will be described with the same reference numerals.

本実施例における基準位置決め部12の前端部には第5
図に示すように、バネ部材21もがビス22によって装
置本体4に取り付けられており、このバネ部材21は図
中矢印方向に押圧力が働いている。
In this embodiment, the front end of the reference positioning part 12 has a fifth
As shown in the figure, a spring member 21 is also attached to the main body 4 of the apparatus with screws 22, and a pressing force acts on this spring member 21 in the direction of the arrow in the figure.

したがって、カセット1を装置本体4に装着すると、係
合片5cは第4図に示すように、バネ部材21によって
図中矢印方向のいずれかに押圧されて固定される。
Therefore, when the cassette 1 is attached to the main body 4 of the apparatus, the engagement piece 5c is pressed in one of the arrow directions in the figure by the spring member 21 and fixed, as shown in FIG.

その他の構成および作用は第一実施例と同一であるので
、その説明を省略する。
Since the other configurations and operations are the same as those of the first embodiment, their explanations will be omitted.

なお、上記実施例では、幅規制部材と装置本体との位置
決めをカセットの下側で行なっているものを説明したが
、上側で行なってもかまわず、本実施例の場合、シート
は上側から1枚ずつ供給されるので、上側で行なったほ
うが位置決めの精度が高くなる。
In the above embodiment, the positioning of the width regulating member and the main body of the device is performed on the lower side of the cassette, but it may be performed on the upper side, and in the case of this embodiment, the sheet is Since the sheets are fed one by one, positioning accuracy will be higher if it is performed on the upper side.

[発明の効果] 以上説明したように本発明にあっては、幅規制部材が不
用意に動かなくなり、また、幅規制部材に規制されるシ
ートと装置本体との位置決めのずれが防止されることに
よって、シートと装置本体との位置決めが確実になされ
、この供給されるシートに画像の形成を行なう場合にお
いても、シートの供給ずれによる画像の形成ずれの生じ
るおそれかない。
[Effects of the Invention] As explained above, the present invention prevents the width regulating member from moving inadvertently, and also prevents misalignment between the sheet regulated by the width regulating member and the main body of the apparatus. As a result, the positioning of the sheet and the main body of the apparatus is ensured, and even when an image is to be formed on the supplied sheet, there is no risk of misalignment of image formation due to misalignment of sheet feeding.

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

第1図(a)、(b)は本発明の第一実施例における要
部を示す部分断面図(第2図(a)のe−e線断面図)
、第2図(a) 、 (b)は本実施例の構成を示す平
面図および底面図、第3図(a)、(b)は本実施例に
おける要部の概略斜視図、第4図は本発明の第二実施例
の要部を示す部分断面図、第5図はカセットの位置する
装置本体の概略平面図、第6図は従来例の全体を示す断
面図、第7図(a) 、 (b)は従来例の構成を示す
平面図および底面図、第8図は従来例におけるカセット
を装置本体に装着した状態を示す図である。 符号の説明
FIGS. 1(a) and (b) are partial cross-sectional views showing essential parts in the first embodiment of the present invention (cross-sectional view taken along the line E--E in FIG. 2(a))
, FIGS. 2(a) and (b) are a plan view and a bottom view showing the configuration of this embodiment, FIGS. 3(a) and (b) are schematic perspective views of the main parts of this embodiment, and FIG. 4 5 is a schematic plan view of the main body of the device in which the cassette is located, FIG. 6 is a sectional view showing the entire conventional example, and FIG. ) and (b) are a plan view and a bottom view showing the configuration of the conventional example, and FIG. 8 is a diagram showing the state in which the cassette in the conventional example is installed in the main body of the apparatus. Explanation of symbols

Claims (1)

【特許請求の範囲】[Claims] 転写材としてのシートの搬送幅方向の端辺に当接して、
このシートの搬送幅方向の位置を規制する幅規制部材と
、シートの搬送方向の端辺に当接して、このシートの搬
送方向の位置を規制する後端規制部材と備え、これらの
規制部材をそれぞれ移動自在に設けることにより、各種
サイズのシートを積載供給可能なシート供給装置におい
て、上記幅規制部材の一部が装置本体と複数箇所で係合
することを特徴とするシート供給装置。
It comes into contact with the edge of the sheet as a transfer material in the transport width direction,
A width regulating member that regulates the position of the sheet in the conveying width direction, and a trailing edge regulating member that comes into contact with an edge of the sheet in the conveying direction to regulate the position of the sheet in the conveying direction. A sheet feeding device capable of stacking and feeding sheets of various sizes by being provided movably, wherein a portion of the width regulating member engages with the main body of the device at a plurality of locations.
JP9213889A 1989-04-12 1989-04-12 Sheet feeder Pending JPH02270729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9213889A JPH02270729A (en) 1989-04-12 1989-04-12 Sheet feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9213889A JPH02270729A (en) 1989-04-12 1989-04-12 Sheet feeder

Publications (1)

Publication Number Publication Date
JPH02270729A true JPH02270729A (en) 1990-11-05

Family

ID=14046072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9213889A Pending JPH02270729A (en) 1989-04-12 1989-04-12 Sheet feeder

Country Status (1)

Country Link
JP (1) JPH02270729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05132157A (en) * 1991-11-08 1993-05-28 Canon Inc Sheet material feed device and image forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05132157A (en) * 1991-11-08 1993-05-28 Canon Inc Sheet material feed device and image forming device

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