JPH07223758A - Paper width detector, sheet feeder and image forming device - Google Patents

Paper width detector, sheet feeder and image forming device

Info

Publication number
JPH07223758A
JPH07223758A JP6037760A JP3776094A JPH07223758A JP H07223758 A JPH07223758 A JP H07223758A JP 6037760 A JP6037760 A JP 6037760A JP 3776094 A JP3776094 A JP 3776094A JP H07223758 A JPH07223758 A JP H07223758A
Authority
JP
Japan
Prior art keywords
paper width
slide volume
sheet
paper
movable
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
JP6037760A
Other languages
Japanese (ja)
Inventor
Michiaki Endo
道昭 遠藤
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 JP6037760A priority Critical patent/JPH07223758A/en
Publication of JPH07223758A publication Critical patent/JPH07223758A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent occurence of wrong detection of paper width due to a difference taking place in a movement starting direction of paper width regulating members by pinching a moving piece of slide volume between two members provided on a movable paper width regulating member side so as to be connected to the movable paper width regulating member side. CONSTITUTION:A lever 50 on side of a rack 34 L which pushes the moving piece 46 of a slide volume 40 linking with the movement of the rack 34 L is rotatably provided, and one end of the lever 50 is energized by a spring 52 so that the lever 50 is pushed to the moving piece 46 of the slide volume 40. The moving piece 46 is retained under such a condition that it is pinched between the lever 50 and a bumping rib 48 by always bringing the lever 50 in contact with the moving piece 46 of the slide volume 40 by means of energy of the spring 52 so that any play between the rack 34 L and the moving piece 46 of the slide volume 40 may be prevented from occur ring even though a side guide, i.e., the rack 34 L is moved right or left. Therefore, the occurrence of wrong detection of paper width due to a difference taking place in a movement starting direction of the side guide is prevented so that accurate paper width detection can be carried out without any error.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、少なくとも一方の部材
を可動部材にして他方の部材との間隔を広狭可能とした
一対の紙幅規制部材を有し、該両部材間に紙を挟むよう
に可動の紙幅規制部材を移動させその移動に連動させて
スライドボリュームの移動子を移動させることでスライ
ドボリュームの抵抗値変化で紙幅を検知する装置に関す
る。また該紙幅検知装置を備えたシート給送装置、及び
該シート給送装置を備えた画像形成装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a pair of paper width regulating members in which at least one member is a movable member and the distance between the other member and the other member can be widened, and a paper is sandwiched between the two members. The present invention relates to a device that detects a paper width by changing a resistance value of a slide volume by moving a movable paper width regulating member and moving a slider of a slide volume in conjunction with the movement. The present invention also relates to a sheet feeding device including the sheet width detecting device, and an image forming apparatus including the sheet feeding device.

【0002】[0002]

【従来の技術】上記のような紙幅検知装置は、例えば、
マルチ手差し給紙装置(シート給送装置)を具備させた
画像形成装置のマルチトレイに配設されている。マルチ
手差し給紙装置は記録材(転写材)として任意のサイズ
の紙を画像形成装置に導入するもので、マルチトレイに
セットされた紙の幅を紙幅検知装置により検知させ、そ
の検知紙幅に応じてブランク露光の露光域を制御して、
転写ローラへの不要なトナーの付着、それによる次の転
写材の裏汚れの発生を防止する等の自動制御を行わせて
いる。
2. Description of the Related Art A paper width detecting device as described above is, for example,
It is arranged on a multi-tray of an image forming apparatus equipped with a multi-manual sheet feeding device (sheet feeding device). The multi-manual paper feeder is to introduce paper of any size as a recording material (transfer material) into the image forming apparatus. The width of the paper set in the multi-tray is detected by the paper width detection device, and the detected paper width is detected. Control the exposure area of blank exposure,
Automatic control is carried out to prevent unnecessary toner from adhering to the transfer roller and the subsequent back stain on the transfer material.

【0003】具体的には、マルチトレイの上面の左右に
配設した、少なくとも一方を可動にして他方との間隔を
載置紙の紙幅に合わせて広挟可能にした一対の紙幅規制
部材としての左右サイドガイドの可動のサイドガイドの
移動に連動させてスライドボリュームの移動子を移動さ
せることでスライドボリュームの抵抗値変化で紙幅を検
知させるものである。
Specifically, as a pair of paper width restricting members disposed on the left and right of the upper surface of the multi-tray, at least one of which is movable and can be widely sandwiched according to the paper width of the placed paper so that the space between the other is movable. By moving the slider of the slide volume in conjunction with the movement of the movable side guides of the left and right side guides, the paper width is detected by the change in the resistance value of the slide volume.

【0004】可動のサイドガイドとスライドボリューム
の移動子の連結は、従来は図5のように紙幅規制部材で
ある可動のサイドガイド側の部材、例えば該サイドガイ
ドと一体にスライド移動するラック100に移動子差し
込み穴部101を具備させ、その穴部101に定置配設
のスライドボリューム102の移動子103を差し込む
ことでサイドガイド側と移動子103とを連結し、サイ
ドガイドの移動に連動させてスライドボリューム102
の移動子103をスライドボリューム102に対して移
動させるものであった。
Conventionally, as shown in FIG. 5, the movable side guide and the slider of the slide volume are connected to a movable side guide side member which is a paper width regulating member, for example, a rack 100 which slides integrally with the side guide. A slider insertion hole 101 is provided, and the slider 103 of the slide volume 102 fixedly installed is inserted into the hole 101 to connect the side guide side and the slider 103, and to interlock with the movement of the side guide. Slide volume 102
The moving element 103 of No. 1 is moved with respect to the slide volume 102.

【0005】[0005]

【発明が解決しようとする課題】 .しかしこの連結構造の場合は、大なり小なり穴部1
01と移動子103との嵌合ガタx1 +x2 が発生す
る。そのガタのため紙幅規制部材としての可動のサイド
ガイドの移動開始方向によって紙幅の誤検知を発生する
ことがあった。
[Problems to be Solved by the Invention] However, in the case of this connection structure, the larger or smaller hole 1
01 and the mover 103 cause looseness x 1 + x 2 . Due to the backlash, the paper width may be erroneously detected depending on the moving start direction of the movable side guide as the paper width regulating member.

【0006】.また、マルチトレイでの給紙が可能な
紙の最大幅と最小幅の差寸法Lがスライドボリューム1
02の移動子103の最大移動量Mと一致、もしくは差
寸法Lよりも移動子最大移動量Mの方が大きい場合には
問題ないが、差寸法Lよりも移動子最大移動量Mが小さ
い場合はそれぞれの機械で専用の、 移動子最大移動M≧差寸法L のスライドボリューム102を作成しなければならず、
コスト面で問題となる。
[0006] In addition, the difference L between the maximum width and the minimum width of paper that can be fed in the multi-tray is the slide volume 1
If the maximum moving amount M of the moving element 103 of No. 02 is larger than the maximum moving amount M of the moving element 103, or if the maximum moving amount M of the moving element is larger than the difference dimension L, the maximum moving amount M of the moving element is smaller than the difference dimension L. Must create a slide volume 102 for each machine, with a maximum movement M of the moving element M ≧ difference dimension L 2,
It becomes a problem in terms of cost.

【0007】また、あらかじめスライドボリューム10
2の移動子103の最大移動量Mを大きくしておく方法
も考えられるが、スライドボリュームが大きくなるの
で、スペースの制約を受ける問題があった。
In addition, the slide volume 10
A method of increasing the maximum moving amount M of the second moving element 103 may be considered, but there is a problem in that the slide volume becomes large and space is restricted.

【0008】本発明は上記及びの問題を解消するこ
とを目的とする。
The present invention is directed to overcoming the problems set forth above and above.

【0009】[0009]

【課題を解決するための手段】本発明は下記の構成を特
徴とする紙幅検知装置及びシート給送装置及び画像形成
装置である。
SUMMARY OF THE INVENTION The present invention is a paper width detecting device, a sheet feeding device, and an image forming apparatus having the following features.

【0010】(1)少なくとも一方の部材を可動部材に
して他方の部材との間隔を広狭可能とした一対の紙幅規
制部材を有し、該両部材間に紙を挟むように可動の紙幅
規制部材を移動させその移動に連動させてスライドボリ
ュームの移動子を移動させることでスライドボリューム
の抵抗値変化で紙幅を検知する装置であり、スライドボ
リュームの移動子を、可動の紙幅規制部材側に設けた2
部材間に挟み込ませて可動の紙幅規制部材側と連結さ
せ、その2部材の少なくとも一方の部材は退避機構を持
つことを特徴とする紙幅検知装置。
(1) At least one member is a movable member and has a pair of paper width regulating members whose distance from the other member can be widened, and the paper width regulating member is movable so as to sandwich the paper between both members. Is a device that detects the paper width by the resistance value change of the slide volume by moving the slider and the slider of the slide volume in conjunction with the movement, and the slider of the slide volume is provided on the movable paper width regulating member side. Two
A paper width detection device characterized in that it is sandwiched between members and connected to a movable paper width regulating member side, and at least one of the two members has a retracting mechanism.

【0011】(2)前記の退避機構は移動子挟み込み部
材を移動子に圧接する方向に常時移動付勢し、付勢力に
抗して逆方向への退避移動を許容する機構であることを
特徴とする(1)に記載の紙幅検知装置。
(2) The retracting mechanism is a mechanism for constantly urging the moving member sandwiching member in a direction of being pressed against the moving member and allowing the retracting movement in the opposite direction against the urging force. The paper width detection device according to (1).

【0012】(3)前記一対の紙幅規制部材は共に可動
でラックとピニオンを介して互いに連結されており、一
方の紙幅規制部材を移動操作するとそれに連動して他方
の紙幅規制部材も一方の紙幅規制部材とは逆方向に等距
離移動して両紙幅規制部材の間隔が中央基準で広狭変化
することを特徴とする(1)に記載の紙幅検知装置。
(3) The pair of paper width regulating members are both movable and connected to each other via a rack and a pinion, and when one paper width regulating member is moved and operated, the other paper width regulating member also moves to one paper width regulating member. The paper width detection device according to (1), wherein the paper width detection device moves equidistantly in a direction opposite to the direction of the restriction member, and the interval between both paper width restriction members varies widely with respect to the center.

【0013】(4)手差しシートを支持するシート支持
手段と、前記シート支持手段に支持されるシートの紙幅
を検知するために設けられた(1)乃至(3)の何れか
1項に記載の紙幅検知装置と、前記シートを送り出すシ
ート給送手段と、を備えたことを特徴とするシート給送
装置。
(4) The sheet supporting means for supporting the manually-fed sheet and the sheet supporting means for detecting the sheet width of the sheet supported by the sheet supporting means according to any one of (1) to (3). A sheet feeding device comprising a sheet width detecting device and a sheet feeding means for feeding the sheet.

【0014】(5)上記(4)に記載のシート給送装置
と、前記シート給送装置から送り出されたシートに画像
を形成する画像形成手段と、を備えたことを特徴とする
画像形成装置。
(5) An image forming apparatus comprising: the sheet feeding device described in (4) above; and an image forming means for forming an image on a sheet fed from the sheet feeding device. .

【0015】[0015]

【作用】スライドボリュームの移動子を可動の紙幅規制
部材側に設けた2部材間に挟み込ませて可動の紙幅規制
部材側と連結させることにより、紙幅規制部材側とスラ
イドボリュームの移動子との間の連結部にガタはないか
ら、紙幅規制部材の移動開始方向の違いによる紙幅の誤
検知の発生が防止される。
The slide volume moving element is sandwiched between two members provided on the movable paper width regulating member side and is connected to the movable paper width regulating member side, so that the paper width regulating member side and the slide volume moving element are connected to each other. Since there is no looseness in the connecting portion of, the erroneous detection of the paper width due to the difference in the movement start direction of the paper width regulating member is prevented from occurring.

【0016】またスライドボリュームの移動子の最大移
動量を越えて紙幅規制部材側が移動しようとした場合、
移動子挟み込み部材が退避機構により退避して紙幅規制
部材側の引き続く移動が許容されることにより、紙幅規
制部材の移動量に対してスライドボリュームの移動子の
最大移動量の方が小さい場合でも対応可能となり、長い
スライドボリュームを使用する必要がなく機械内の省ス
ペース化が図れる。従って前記やの問題を解消する
ことができる。
When the paper width regulating member side attempts to move beyond the maximum movement amount of the slider of the slide volume,
Even if the maximum moving amount of the slider of the slide volume is smaller than the moving amount of the paper width regulating member, the moving member sandwiching member retracts by the retracting mechanism and the subsequent movement on the paper width regulating member side is allowed. This makes it possible to save space in the machine without using a long slide volume. Therefore, the above problem can be solved.

【0017】[0017]

【実施例】図1は本発明に従う紙幅検知装置を配設した
手差し給紙装置を具備させた画像形成装置の一例の、装
置背面側からみた斜視図、図2は装置内部機構の概略図
である。本例の画像形成装置は原稿台ガラス固定−光学
系移動型の転写式電子写真複写機である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an example of an image forming apparatus equipped with a manual paper feeding device provided with a paper width detecting device according to the present invention as seen from the rear side of the device, and FIG. 2 is a schematic view of the internal mechanism of the device. is there. The image forming apparatus of this embodiment is a fixed platen glass fixed-optical system moving type transfer electrophotographic copying machine.

【0018】(1)画像形成装置の全体的概略構成 1は複写機本体機筐、2は該機筐の上面開口に嵌め付け
た固定の原稿台ガラス、3はその原稿台ガラス上に開閉
自由の原稿圧着板、4は機筐上面の手前側に配設したコ
ンソールパネルである。
(1) Overall Schematic Structure of Image Forming Apparatus 1 is a machine casing of a copying machine main body, 2 is a fixed platen glass fitted in an opening on the upper surface of the casing, and 3 is openable on the platen glass. Document pressing plates 4 and 4 are console panels arranged on the front side of the upper surface of the machine casing.

【0019】原稿台ガラス2の上面に原稿Oを複写すべ
き画像面を下向きにして所定の載置基準にて載置セット
し、その上から原稿圧着板3をかぶせ閉じて原稿Oを押
え状態にする。
The original O is placed on the upper surface of the original glass 2 with the image surface to be copied facing downward and set according to a predetermined placing standard, and the original pressure plate 3 is covered and closed to close the original O. To

【0020】A.カセット給紙モードの場合 この場合は、使用転写材(記録材)サイズ、複写枚数等
の複写条件をコンソールパネル4からオペレータがあら
かじめ制御系に入力する。
A. In the case of the cassette sheet feeding mode In this case, the operator inputs the copy conditions such as the size of the transfer material (recording material) used and the number of copies from the console panel 4 to the control system in advance.

【0021】コピーボタンを押すと、原稿台ガラス2の
下の移動型光学系の原稿照明ランプ5aと第1移動ミラ
ー5bが所定の速度Vで原稿台ガラス2の下面に沿って
左辺側から右辺側へ往動移動し、第2及び第3移動ミラ
ー5c・5dがV/2の速度で原稿照明ランプ5aと第
1移動ミラー5bと同じ方向に往動することで、原稿台
ガラス2上のセット原稿Oの下向き画像面が左辺側から
右辺側に照明走査され、その照明光の原稿面反射光が第
1〜第3移動ミラー5b・5c・5d→ズームレンズ5
e→第1〜第3固定ミラー5f・5g・5hを経由し
て、矢示の時計方向に所定の周速度(プロセススピー
ド)をもって回転駆動される電子写真感光ドラム6の面
にスリット結像露光Lされる。
When the copy button is pressed, the manuscript illumination lamp 5a of the movable optical system and the first moving mirror 5b below the manuscript table glass 2 are moved at a predetermined speed V along the lower surface of the manuscript table glass 2 from the left side to the right side. On the original platen glass 2 by moving backward and moving the second and third moving mirrors 5c and 5d in the same direction as the document illumination lamp 5a and the first moving mirror 5b at a speed of V / 2. The downward image surface of the set document O is illuminated and scanned from the left side to the right side, and the reflected light on the original surface of the illumination light is reflected by the first to third moving mirrors 5b, 5c, 5d and the zoom lens 5.
e → Slit imaging exposure on the surface of the electrophotographic photosensitive drum 6 which is rotationally driven at a predetermined peripheral speed (process speed) in the clockwise direction indicated by an arrow via the first to third fixed mirrors 5f, 5g, and 5h. L is done.

【0022】回転感光ドラム6は一次帯電手段としての
帯電ローラ7により所定の極性・電位に帯電処理され、
その帯電処理面に上記の原稿画像のスリット結像露光L
を受けることで原稿画像に対応した静電潜像が回転感光
ドラム6面に形成される。その静電潜像は現像器8によ
りトナー画像として現像される。
The rotary photosensitive drum 6 is charged to a predetermined polarity and potential by a charging roller 7 as a primary charging means.
A slit image forming exposure L of the above-mentioned document image is formed on the charging surface.
By receiving the electrostatic latent image, an electrostatic latent image corresponding to the original image is formed on the surface of the rotary photosensitive drum 6. The electrostatic latent image is developed as a toner image by the developing device 8.

【0023】一方、複写機本体内の下部に装着された給
紙カセット13内に積載収納されている転写材Pの最上
位の転写材が給紙ローラ14により繰り出され、給紙ロ
ーラ14と該ローラ14に圧接させた分離パッド15と
の共働により最上位の転写材が1枚分離されて、反転ガ
イド16と下ガイド17と上ガイド18によりレジスト
ローラ対19へ案内される。
On the other hand, the uppermost transfer material of the transfer materials P stacked and housed in the paper feed cassette 13 installed in the lower part of the main body of the copying machine is fed out by the paper feed roller 14 and the paper feed roller 14 and One sheet of the uppermost transfer material is separated in cooperation with the separation pad 15 pressed against the roller 14 and guided to the registration roller pair 19 by the reversing guide 16, the lower guide 17 and the upper guide 18.

【0024】給紙カセット13は本例の複写機では所謂
フロントローディング式に複写機に装着・引き出しされ
る。給紙カセット13内に積載収納した転写材Pはその
先端側がバネにより押し上げ付勢された加圧板13aに
より持ち上げられることでその先端側上面が給紙ローラ
14の下面に押し付けられて給紙ローラ13の回転によ
り積載転写材Pの最上位転写材に繰り出し力が作用す
る。
In the copying machine of this embodiment, the paper feeding cassette 13 is mounted / pulled out from the copying machine in a so-called front loading type. The transfer material P stacked and stored in the paper feed cassette 13 is lifted by a pressure plate 13a whose tip end side is pushed up by a spring and urged, so that the top end side upper surface is pressed against the lower surface of the paper feed roller 14 and the paper feed roller 13 is pressed. By the rotation of, the feeding force acts on the uppermost transfer material of the loaded transfer material P.

【0025】レジストローラ対19へ案内された転写材
はこのレジストローラ対19により斜行修正・レジスト
調整され、転写ガイド20を通って、所定のタイミング
で回転感光ドラム6と転写ローラ9との圧接ニップ部
(転写部)へ搬送されることで、回転感光ドラム6側か
らトナー画像の転写を順次に受ける。
The transfer material guided to the registration roller pair 19 is subjected to skew correction and registration adjustment by the registration roller pair 19, passes through the transfer guide 20, and comes into pressure contact between the rotating photosensitive drum 6 and the transfer roller 9 at a predetermined timing. By being conveyed to the nip portion (transfer portion), the toner image is sequentially transferred from the rotary photosensitive drum 6 side.

【0026】転写部でトナー画像転写を受けた転写材は
回転感光ドラム6の面から分離されて搬送装置21で定
着器22へ搬送され、この定着器22により転写トナー
画像の加熱定着処理を受けて画像形成物(コピー)とし
て排紙ローラ23により機外の排紙トレイ24へ排出さ
れる。
The transfer material having undergone the toner image transfer at the transfer portion is separated from the surface of the rotary photosensitive drum 6 and is conveyed to a fixing device 22 by a conveying device 21. The fixing device 22 heats and fixes the transferred toner image. As an image-formed product (copy), the paper is ejected to the paper ejection tray 24 outside the apparatus by the paper ejection roller 23.

【0027】転写材へのトナー画像転写後の回転感光ド
ラム面はクリーニング装置10により転写残りトナー等
の残留付着物の除去を受けて清浄面化され、またイレー
サランプ11により除電露光L1 を受けて除電処理され
て繰り返して作像に供される。L2 はブランク露光光を
示す。原稿照明ランプ5a・第1移動ミラー5b、第2
・第3移動ミラー5c・5dはそれぞれ所定の往動終点
に至ると、復動に転じられてはじめの往動開始位置(ホ
ームポジション)へ戻される。
After the transfer of the toner image to the transfer material, the surface of the rotating photosensitive drum is cleaned by a cleaning device 10 to remove residual deposits such as toner remaining after transfer, and the eraser lamp 11 receives static elimination exposure L 1 . It is subjected to static elimination processing and is repeatedly used for image formation. L 2 represents blank exposure light. Original illumination lamp 5a, first moving mirror 5b, second
When the third moving mirrors 5c and 5d reach the predetermined forward movement end points, they are returned to the initial forward movement start position (home position).

【0028】B.マルチ手差し給紙モードの場合 25はマルチ手差し給紙装置部であり、複写機本体の右
側面側に配設してある。26はこのマルチ手差し給紙装
置のマルチトレイであり、下辺側のヒンジ軸を中心に、
図2の2点鎖線示のように複写機本体の右側面板の凹所
内に起こし回動してたたみ込んで格納した閉じ状態と、
図2の実線示及び図1のように複写機本体の右側面板か
ら外方へ倒し回動して前下り傾斜姿勢の開き状態とに開
閉回動操作自由である。不使用時は閉じ状態にされる。
使用時は開き状態にされる。
B. In the case of the multi-manual paper feeding mode, reference numeral 25 denotes a multi-manual paper feeding device section, which is disposed on the right side surface of the copying machine main body. Numeral 26 is a multi-tray of this multi-bypass feeder, which is centered on the hinge shaft on the lower side.
As shown by the chain double-dashed line in FIG. 2, a closed state in which the right side plate of the main body of the copying machine is raised, rotated, folded and stored.
As shown by the solid line in FIG. 2 and FIG. 1, the opening / closing rotation operation is freely performed by tilting outward from the right side plate of the main body of the copying machine and rotating it to the open state of the front downward inclination posture. It is closed when not in use.
It is opened when used.

【0029】27L・27Rは上記マルチトレイ26の
上面の左右に配設した、紙幅規制部材としての一対の手
差し転写材サイドガイドである。
27L and 27R are a pair of manually inserted transfer material side guides, which are provided on the left and right of the upper surface of the multi-tray 26 and serve as paper width regulating members.

【0030】この左右のサイドガイド27L・27Rは
それぞれマルチトレイ26の上面を左右方向にスライド
移動操作自由の可動部材であり、後述するように、マル
チトレイ26の裏面側においてラックとピニオンを介し
て互いに連結されており、一方のサイドガイドを左右方
向にスライド移動操作するとそれに連動して他方のサイ
ドガイドも一方のサイドガイドとは逆方向に等距離移動
して両サイドガイド27L・27Rの間隔が中央基準で
広狭変化する。
The left and right side guides 27L and 27R are movable members that can freely slide and move on the upper surface of the multi-tray 26 in the left-right direction, and, as will be described later, via the rack and pinion on the rear surface side of the multi-tray 26. They are connected to each other, and when one side guide is slid to the left and right, the other side guide also moves in the opposite direction to the other side guide by the same distance, and the distance between the two side guides 27L and 27R becomes larger. Wide and narrow depending on the central reference.

【0031】そこでマルチ手差し給紙モードの場合は、
マルチトレイ26を開き状態に回動し、左右のサイドガ
イド27L・27Rの間隔を手差しする転写材の幅より
も大きくした状態にして、その両サイドガイド27L・
27Rの間のマルチトレイ上に転写材を載置し、左右の
サイドガイド間の間隔を狭める方向にサイドガイドをス
ライドさせて両サイドガイド間に転写材を挟ませる。こ
れにより転写材は両側が両サイドガイド27L・27R
の内面で規制されてマルチトレイ26上に中央基準で整
置される。
Therefore, in the multi-manual paper feed mode,
The multi-tray 26 is rotated to the open state, and the distance between the left and right side guides 27L and 27R is made larger than the width of the transfer material to be manually fed, and both side guides 27L and 27R
The transfer material is placed on the multi-tray between 27R, and the side guide is slid in the direction in which the space between the left and right side guides is narrowed to sandwich the transfer material between both side guides. As a result, the transfer material has both side guides 27L and 27R on both sides.
Is regulated on the inner surface of the tray and is aligned on the multi-tray 26 with the central reference.

【0032】そしてコピーボタンを押すと、前述のカセ
ット給紙モードの場合と同様に回転感光ドラム6に対す
る原稿画像に対応したトナー画像の作成プロセスが実行
されると共に、マルチ手差し給紙装置部25において、
バネにより付勢され、カムによりその上下動の動きを制
御される中板28が上昇しマルチトレイ26上に上記セ
ットした転写材の先端部上面が手差し給紙ローラ29に
押し付けられた状態になる。
When the copy button is pressed, the toner image forming process corresponding to the original image on the rotary photosensitive drum 6 is executed as in the case of the cassette sheet feeding mode, and the multi-manual sheet feeding device section 25 is operated. ,
The intermediate plate 28, which is urged by a spring and whose vertical movement is controlled by a cam, rises and the upper surface of the leading end of the transfer material set on the multi-tray 26 is pressed against the manual paper feed roller 29. .

【0033】その後所定のタイミングで手差し給紙ロー
ラ29の回転が開始され、マルチトレイ26上のセット
転写材の最上位転写材に繰り出し力が作用して転写材の
先端部が手差し給紙ローラ29とこれに圧接させた分離
パッド30の間に挟まれると中板28は下がる。
After that, the manual paper feed roller 29 is started to rotate at a predetermined timing, and the feeding force acts on the uppermost transfer material of the set transfer material on the multi-tray 26 so that the leading end of the transfer material is fed by the manual paper feed roller 29. When it is sandwiched between the separation pad 30 pressed against this and the intermediate pad 28, the middle plate 28 lowers.

【0034】手差し給紙ローラ29の引き続く回転によ
りマルチトレイ26上のセット転写材の最上位転写材が
手差し給紙ローラ29と分離パッド30の共働により1
枚分離給送され、上ガイド18・中ガイド31・下ガイ
ド17によってレジストローラ対19へ案内される。
By the subsequent rotation of the manual paper feed roller 29, the uppermost transfer material of the set transfer material on the multi-tray 26 becomes 1 by the cooperation of the manual paper feed roller 29 and the separation pad 30.
The sheets are separated and fed, and are guided to the registration roller pair 19 by the upper guide 18, the middle guide 31, and the lower guide 17.

【0035】あとは前述のカセット給紙モードの場合と
同様であり、上記のマルチトレイ26からの転写材が転
写部へ搬送されて、手差し転写材によるコピーが排紙ト
レイ24に排出される。
The rest is the same as in the case of the cassette sheet feeding mode, and the transfer material from the above-mentioned multi-tray 26 is conveyed to the transfer portion, and the copy by the manual transfer material is discharged to the paper discharge tray 24.

【0036】(2)紙幅検出装置 マルチ手差し給紙装置25は転写材として大小任意のサ
イズの紙、本例ではA3幅サイズの紙からハガキサイズ
の紙までを複写機本体へ導入するもので、マルチ手差し
給紙モードにおいては、マルチトレイ26にセットされ
た紙の幅を紙幅検知装置により検知させ、その検知紙幅
に応じてブランク露光L3 の露光域を制御して、転写ロ
ーラ9への不要なトナーの付着、それによる次の転写材
の裏汚れの発生を防止する等の自動制御を行わせてい
る。
(2) Paper Width Detection Device The multi-manual paper feeder 25 is used to introduce paper of any size, such as A3 width size paper to postcard size paper, as a transfer material into the main body of the copying machine. In the multi-manual paper feed mode, the width of the paper set on the multi-tray 26 is detected by the paper width detection device, and the exposure area of the blank exposure L 3 is controlled according to the detected paper width to eliminate the need for the transfer roller 9. The automatic control is performed to prevent the adherence of a large amount of toner and the subsequent back stain on the transfer material.

【0037】本実施例においてはマルチトレイ26の一
方のサイドガイド27Lの移動に連動させてスライドボ
リュームの移動子を移動させることでスライドボリュー
ムの抵抗値変化で、マルチトレイ26上のセット転写材
の紙幅を検知して、その紙幅検知情報を制御系にフィー
ドさせている。
In the present embodiment, by moving the slider of the slide volume by interlocking with the movement of one side guide 27L of the multi-tray 26, the resistance value of the slide volume changes, and the set transfer material on the multi-tray 26 moves. The paper width is detected and the paper width detection information is fed to the control system.

【0038】スライドボリュームはマルチトレイ26の
裏面側に配設してあり、図3はそのマルチトレイ26の
裏面側の機構図である。
The slide volume is arranged on the back side of the multi-tray 26, and FIG. 3 is a mechanical view of the back side of the multi-tray 26.

【0039】32L・32R(図1・図3)はマルチト
レイ26の面に形成した左右方向のガイド長孔である。
左側のサイドガイド27Lは該ガイドの下面に突設した
2本のボス33L・33Lを左側のガイド長孔32Lに
嵌係合させることで、該ガイド長孔32Lを案内として
マルチトレイ26上を左右方向にスライド移動自由にし
てある。右側のサイドガイド27Rは該ガイドの下面に
突設した2本のボス33R・33Rを右側のガイド長孔
32Rに嵌係合させることで、該ガイト長孔32Rを案
内としてマルチトレイ26上を左右方向にスライド移動
自由にしてある。
Reference numerals 32L and 32R (FIGS. 1 and 3) are elongated guide holes formed in the surface of the multi-tray 26 in the left-right direction.
The left side guide 27L fits and engages two bosses 33L, 33L protruding from the lower surface of the guide with the left guide long hole 32L, so that the left and right guides on the multi-tray 26 are guided by the guide long hole 32L. It is free to slide in any direction. The right side guide 27R has two bosses 33R, 33R protruding from the lower surface of the guide fitted into and engaged with the right guide elongated hole 32R, so that the guide long hole 32R guides the left and right on the multi-tray 26. It is free to slide in any direction.

【0040】34L・34Rはそれぞれ左右のサイドガ
イド27L・27Rに対してマルチトレイ26の裏面側
において一体に取り付けた左右のラックである。各ラッ
ク34L・34Rはそれぞれ左右のサイドガイド27L
・27Rのボス33L・33L,33R・33Rのマル
チトレイ裏面側突出端に位置決め穴35L・35L,3
5R・35Rを嵌係合させ、かつビス36L・36Rで
それぞれ左右のサイドガイド27L・27Rに一体に固
定してある。
34L and 34R are left and right racks integrally attached to the left and right side guides 27L and 27R, respectively, on the back side of the multi-tray 26. Left and right side guides 27L for each rack 34L / 34R
-Positioning holes 35L, 35L, 3 at the protruding end of the 27R boss 33L, 33L, 33R, 33R on the back side of the multi-tray
5R and 35R are fitted and engaged, and fixed to the left and right side guides 27L and 27R respectively by screws 36L and 36R.

【0041】従って左右の各ラック34L・34Rはそ
れぞれ左右のサイドガイド27L・27Rと一体にマル
チトレイ26の裏面側において左右方向にスライド移動
する。
Therefore, the left and right racks 34L and 34R slide in the left and right directions integrally with the left and right side guides 27L and 27R, respectively, on the rear surface side of the multi-tray 26.

【0042】37はマルチトレイ26の裏面中央部に回
転自由に枢着したピニオンであり、左右のラック34L
・34Rはこのピニオン37を中にして対向して該ピニ
オン37にそれぞれ噛合している。
A pinion 37 is rotatably and pivotally attached to the center of the back surface of the multi-tray 26, and is provided on the left and right racks 34L.
The 34R faces the pinion 37 and is meshed with the pinion 37.

【0043】即ち左右のサイドガイド27L・27Rは
マルチトレイ26の裏面側において左右のラック34L
・34Rとピニオン37を介して互いに連結されてお
り、一方のサイドガイドを左右方向にスライド移動操作
すると、それに連動して他方のサイドガイドも一方のサ
イドガイドとは逆方向に等距離移動して両サイドガイド
27L・27Rの間隔が中央基準で広狭変化する。
That is, the left and right side guides 27L and 27R are provided on the back side of the multi-tray 26 and the left and right racks 34L.
・ 34R and pinion 37 are connected to each other. When one side guide is slid in the left / right direction, the other side guide also moves in the opposite direction from the one side guide by the same distance. The distance between the two side guides 27L and 27R changes widely depending on the center.

【0044】38a〜38fは左右のラック34L・3
4Rをそれぞれ安定に左右方向へスライド移動させるた
めに、マルチトレイ26の裏面に左右方向に並行に配設
した複数条のガイドリブである。また39L・39L,
39R・39Rはそれぞれ左右のラック34L・34R
に具備させたバネ部であり、それぞれそのバネ部をガイ
ドリブ38a・38dの内側に圧接させることで、左右
のラック34L・34Rがそれぞれピニオン37の方向
へ付勢されて各ラック34L・34Rがピニオン37に
常にしっかりと噛み合った状態に保持される。上記のガ
イドリブ38a〜38f、バネ部39L・39L,39
R・39Rにより左右のサイドガイド27L・27R及
び左右のラック34L・34Rがガタなくスムーズに左
右方向にスライド案内される。
38a to 38f are left and right racks 34L.3
A plurality of guide ribs are provided on the back surface of the multi-tray 26 in parallel in the left-right direction in order to stably slide the 4R in the left-right direction. Also 39L, 39L,
39R and 39R are left and right racks 34L and 34R, respectively
The left and right racks 34L and 34R are urged in the direction of the pinion 37 by pressing the spring parts respectively inside the guide ribs 38a and 38d, and the racks 34L and 34R are pinion-mounted. 37 is always held in a tight mesh. The guide ribs 38a to 38f and the spring portions 39L, 39L, 39 described above.
The left and right side guides 27L and 27R and the left and right racks 34L and 34R are smoothly slid and guided in the left and right directions by the R and 39R.

【0045】40はスライドボリュームであり、マルチ
トレイ26の裏面の基部側に左右方向に配設してある。
このスライドボリューム40はボリュームホルダー41
にビス42・42で固定され、ボリュームホルダー41
をマルチトレイ26に対して位置決めピン43・43と
嵌係合穴44・44で位置決めし、ビス45・45で固
定してマルチトレイユニットとして構成してある。46
はこのスライドボリュームの移動子、47はスライドボ
リュームのリード線であり、不図示の複写機制御系に接
続される。
Reference numeral 40 denotes a slide volume, which is arranged in the left-right direction on the base side of the back surface of the multi-tray 26.
This slide volume 40 is a volume holder 41
It is fixed with screws 42 and 42 to the volume holder 41.
Is positioned with respect to the multi-tray 26 by the positioning pins 43, 43 and the fitting engagement holes 44, 44, and fixed by the screws 45, 45 to form a multi-tray unit. 46
Is a slider of the slide volume, and 47 is a lead wire of the slide volume, which is connected to a copying machine control system (not shown).

【0046】左側のラック34Lには上記スライドボリ
ューム40の移動子46の突き当てリブ48と、軸49
を中心に回動するレバー(アーム)50と、バネかけ部
51と、このバネかけ部51と上記レバー50の一端部
とに張設した引っ張りコイルバネ52を配設してあり、
上記の突き当てリブ48と、バネ52で回動付勢させた
レバー50の他端部50aとの間にスライドボリューム
40の移動子46をガタなく挟み込ませて左側のラック
34Lとスライドボリューム40の移動子46とを連結
させてあり、左側のサイドガイド27L即ち左側のラッ
ク34Lの左右方向へのスライド移動に連動してスライ
ドボリューム40の移動子46がスライドボリューム4
0に対して左右方向にスライド移動する。
On the left rack 34L, an abutting rib 48 of a slider 46 of the slide volume 40 and a shaft 49 are provided.
There are provided a lever (arm) 50 that rotates around the center, a spring hook portion 51, and a tension coil spring 52 stretched between the spring hook portion 51 and one end of the lever 50.
The slider 46 of the slide volume 40 is sandwiched between the abutment rib 48 and the other end 50a of the lever 50 which is urged to rotate by the spring 52 without rattling, so that the rack 34L on the left side and the slide volume 40 are separated. The slider 46 is connected to the slider 46, and the slider 46 of the slide volume 40 is linked to the slide movement of the left side guide 27L, that is, the left rack 34L in the left-right direction.
Slide to the left and right with respect to 0.

【0047】従って、マルチトレイ26上に載置した手
差し転写材の幅に合わせて該転写材を挟むように紙幅規
制部材としての左右のサイドガイド27L・27Rを移
動させることで、左側サイドガイド27Lの移動に連動
してスライドボリュームの移動子46が移動してスライ
ドボリュームの抵抗値が紙幅に対応した値となり、その
値がリード線47を介して制御系にフィードされて紙幅
検知がなされる。
Therefore, by moving the left and right side guides 27L and 27R as paper width regulating members so as to sandwich the transfer material placed on the multi-tray 26 so as to sandwich the transfer material, the left side guide 27L. The slider 46 of the slide volume moves in association with the movement of the slide volume, and the resistance value of the slide volume becomes a value corresponding to the paper width, and the value is fed to the control system via the lead wire 47 to detect the paper width.

【0048】なお、上記のマルチトレイ26の裏面に対
しては下カバーが取り付けられて該トレイ26の上記の
裏面側の機構は隠蔽保護される。
A lower cover is attached to the back surface of the multi-tray 26 to conceal and protect the mechanism on the back surface side of the tray 26.

【0049】図3は左右のサイドガイド27L・27R
の間隔をA3サイズ幅に合わせた時のマルチトレイ26
の裏面側機構の状態を示しており、図4はハガキサイズ
幅に合わせた時のマルチトレイ26の裏面側機構の状態
を示している。
FIG. 3 shows the left and right side guides 27L and 27R.
Multi-tray 26 when the intervals of A3 size are adjusted
4 shows the state of the back side mechanism of FIG. 4, and FIG. 4 shows the state of the back side mechanism of the multi-tray 26 when adjusted to the postcard size width.

【0050】左右のサイドガイド27L・27RはA3
サイズ幅297mmからハガキサイズ幅100mmまで
対応するためにそれぞれのその左右方向の移動量Lは (297mm−100mm)/2=98.5mm である。
The left and right side guides 27L and 27R are A3
In order to handle the size width of 297 mm to the postcard size width of 100 mm, the amount of movement L of each of the left and right directions is (297 mm-100 mm) /2=98.5 mm.

【0051】スライドボリューム40の移動子46の最
大移動量Mは100mmであり、移動子46に連結させ
た左側サイドガイド27Lと一体のラック34Lの上記
移動量M98.5mmにメカ的には対応可能であるが、
実際には電気的にスライドボリューム40側の立ち上り
特性が鈍いため先端3mm程度、スライドボリューム4
0をオフセットして配置している。
The maximum moving amount M of the moving element 46 of the slide volume 40 is 100 mm, and it is mechanically compatible with the moving amount M of the rack 34L integrated with the left side guide 27L connected to the moving element 46, which is 98.5 mm. In Although,
Actually, since the rising characteristic of the slide volume 40 side is electrically dull, the tip of the slide volume 4 is about 3 mm.
0 is offset and arranged.

【0052】そのため、ラック27Lの移動量Lに対し
てスライドボリューム40の移動子46の最大移動量M
が小さい関係を生じる。即ち、左右のサイドガイド27
L・27Rの間隔をハガキサイズ幅に合わせたときは、
左側ラック34Lがハガキサイズ幅の98.5mmを移
動し終わる前にスライドボリューム40側の移動子46
が移動終点に達してそれ以上の移動が阻止されることに
なる。
Therefore, with respect to the movement amount L of the rack 27L, the maximum movement amount M of the slider 46 of the slide volume 40 is M.
Causes a small relationship. That is, the left and right side guides 27
When the distance between L and 27R is adjusted to the postcard size width,
Before the left side rack 34L has finished moving the postcard size width of 98.5 mm, the slider 46 on the slide volume 40 side is moved.
Reaches the end point of movement, and further movement is blocked.

【0053】しかし本実施例では、サイドガイドを引き
続き移動させると図4のようにレバー50が軸49を中
心にバネに抗して時計方向に退避回動することで左右の
サイドガイド27L・27Rをハガキサイズ幅の間隔で
移動させることが許容される。このときレバー50が上
記の退避回動を始める紙幅からハガキサイズの紙幅は全
てハガキとみなしてしまうことにより長さに余裕のある
専用のスライドボリュームを作成する必要がない。
However, in this embodiment, when the side guides are continuously moved, the lever 50 pivots in the clockwise direction against the spring about the shaft 49 as shown in FIG. 4, whereby the left and right side guides 27L and 27R are rotated. Is allowed to move at intervals of the postcard size width. At this time, it is not necessary to create a dedicated slide volume having a sufficient length by considering all the post-sized paper widths from the paper width at which the lever 50 starts the retracting rotation as postcards.

【0054】即ち本実施例は、ラック34Lの移動に連
動するスライドボリューム40の移動子46を押すラッ
ク34L側のレバー50を回動可能にし、バネ52によ
りレバー50一端を付勢することでレバー50をスライ
ドボリューム40の移動子46に押付ける。そしてスラ
イドボリューム40の移動子46の最大移動量Mを越え
てラック34L側が移動しようとした場合、レバー50
が回動して退避することによりラック34Lの移動量L
に対してスライドボリューム40の移動子46の移動量
Mの方が小さい場合でも対応可能としたものである。
That is, in this embodiment, the lever 50 on the rack 34L side that pushes the mover 46 of the slide volume 40 interlocked with the movement of the rack 34L is made rotatable, and one end of the lever 50 is urged by the spring 52 so that the lever 50 is urged. 50 is pressed against the mover 46 of the slide volume 40. When the rack 34L side tries to move beyond the maximum movement amount M of the slider 46 of the slide volume 40, the lever 50
By rotating and retracting
On the other hand, even if the moving amount M of the moving element 46 of the slide volume 40 is smaller, it is possible to cope with the situation.

【0055】またレバー50はバネ52の付勢により常
にスライドボリューム40の移動子46に接触して移動
子46がこのレバー50と突き当てリブ48の間に挟み
込まれた状態に保持されてサイドガイド27L即ちラッ
ク34Lとスライドボリューム40の移動子46とが連
結されているから、サイドガイド27L即ちラック34
Lが左方に移動しても右方に移動しても該ラック34L
とスライドボリューム40の移動子46との間でガタが
発生しないため、サイドガイドの移動開始方向の違いに
よる紙幅の誤検知の発生が防止され、誤差のない正確な
紙幅検知が可能である。
The lever 50 is always in contact with the moving element 46 of the slide volume 40 by the biasing force of the spring 52, and the moving element 46 is held in a state of being sandwiched between the lever 50 and the abutment rib 48, so that the side guide is provided. 27L, that is, the rack 34L, and the slider 46 of the slide volume 40 are connected, so that the side guide 27L, that is, the rack 34
Even if L is moved leftward or rightward, the rack 34L
Since backlash does not occur between the slider 46 and the slider 46 of the slide volume 40, erroneous detection of the paper width due to the difference in the movement start direction of the side guides is prevented, and accurate paper width detection without error is possible.

【0056】レバー50と共同してスライドボリューム
40の移動子46をガタなく挟み込む対向部材である突
き当てリブ48も移動子46に圧接する方向に移動付勢
するようにして退避機構を持たせてもよい。
An abutment rib 48, which is an opposing member for pinching the moving element 46 of the slide volume 40 in cooperation with the lever 50, is also provided with a retracting mechanism so as to move and urge the moving element 46 in the direction of pressing against the moving element 46. Good.

【0057】以上の実施例は紙幅規制部材としての左右
のサイドガイド27L・27Rが両方とも連動して可動
であるが、一方のサイドガイドは固定とし、他方のサイ
ドガイドを可動にして両サイドガイドの間隔を紙幅に合
わせて広挟する片側基準構成のものにも本発明の紙幅検
知装置を適用できることは勿論である。
In the above embodiment, the left and right side guides 27L and 27R as the paper width regulating member are both movable in conjunction with each other, but one side guide is fixed and the other side guide is movable so that both side guides are movable. It is needless to say that the paper width detection device of the present invention can be applied to the one-side reference configuration in which the space between the two is widely sandwiched according to the paper width.

【0058】[0058]

【発明の効果】以上のように本発明の紙幅検知装置、該
紙幅検知装置を備えたシート給送装置、該シート給送装
置を備えた画像形成装置によれば、紙幅規制部材側とス
ライドボリュームの移動子との間の連結部にガタはない
から、紙幅規制部材の移動開始方向の違いによる紙幅の
誤検知の発生が防止され、誤差なく正確な紙幅検知がで
きる。
As described above, according to the paper width detecting device of the present invention, the sheet feeding device having the paper width detecting device, and the image forming apparatus having the sheet feeding device, the paper width regulating member side and the slide volume are provided. Since there is no looseness in the connecting portion between the moving element and the moving element, erroneous detection of the paper width due to the difference in the movement start direction of the paper width regulating member is prevented from occurring, and accurate paper width detection can be performed without error.

【0059】また紙幅規制部材の移動量に対してスライ
ドボリュームの移動子の最大移動量の方が小さい場合で
も対応可能となり、長いスライドボリュームを使用する
必要がなく機械内の省スペース化が図れる。
Further, even when the maximum movement amount of the slider of the slide volume is smaller than the movement amount of the paper width regulating member, it is possible to cope with the case, and it is not necessary to use a long slide volume, and the space in the machine can be saved.

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

【図1】 本発明に従う紙幅検知装置を配設した手差し
給紙装置を具備させた画像形成装置の一例の、装置背面
側からみた斜視図
FIG. 1 is a perspective view of an example of an image forming apparatus including a manual sheet feeding device provided with a paper width detecting device according to the present invention, as viewed from the rear side of the device.

【図2】 装置内部機構の概略図FIG. 2 is a schematic view of the internal mechanism of the device.

【図3】 左右のサイドガイドの間隔をA3サイズ幅に
合わせた時のマルチトレイの裏面側機構の状態図
FIG. 3 is a state diagram of the back tray side mechanism of the multi-tray when the distance between the left and right side guides is adjusted to the A3 size width.

【図4】 左右のサイドガイドの間隔をハガキサイズ幅
に合わせた時のマルチトレイの裏面側機構の状態図
FIG. 4 is a state diagram of the back tray side mechanism of the multi-tray when the interval between the left and right side guides is adjusted to the postcard size width.

【図5】 従来装置における、可動のサイドガイドとス
ライドボリュームの移動子の連結部の斜視図
FIG. 5 is a perspective view of a connecting portion of a movable side guide and a slider of a slide volume in a conventional device.

【符号の説明】[Explanation of symbols]

1 複写機本体 25 マルチ手差し給紙部 26 マルチトレイ 27L・27R 左右のサイドガイド(紙幅規制部
材) 34L・34R 左右のラック 37 ピニオン 40 スライドボリューム 46 移動子 48・50 移動子挟み込み部材(突き当てリブと加
圧レバー) 50 引っ張りバネ(付勢部材)
1 Copier body 25 Multi-manual paper feed section 26 Multi-tray 27L / 27R Left and right side guides (paper width regulating member) 34L / 34R Left and right racks 37 Pinion 40 Slide volume 46 Mover 48/50 Mover sandwiching member (abutting rib) And pressure lever) 50 Extension spring (biasing member)

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも一方の部材を可動部材にして
他方の部材との間隔を広狭可能とした一対の紙幅規制部
材を有し、該両部材間に紙を挟むように可動の紙幅規制
部材を移動させその移動に連動させてスライドボリュー
ムの移動子を移動させることでスライドボリュームの抵
抗値変化で紙幅を検知する装置であり、スライドボリュ
ームの移動子を、可動の紙幅規制部材側に設けた2部材
間に挟み込ませて可動の紙幅規制部材側と連結させ、そ
の2部材の少なくとも一方の部材は退避機構を持つこと
を特徴とする紙幅検知装置。
1. A pair of paper width regulating members, wherein at least one member is a movable member so that a space between the other member and the other member can be widened, and a paper width regulating member which is movable so as to sandwich the paper between the both members. This is a device for detecting the paper width by the resistance value change of the slide volume by moving the slide volume moving element in conjunction with the movement, and the slide volume moving element is provided on the movable paper width regulating member side. A paper width detection device characterized in that it is sandwiched between members and connected to a movable paper width regulating member side, and at least one of the two members has a retracting mechanism.
【請求項2】 前記の退避機構は移動子挟み込み部材を
移動子に圧接する方向に常時移動付勢し、付勢力に抗し
て逆方向への退避移動を許容する機構であることを特徴
とする請求項1に記載の紙幅検知装置。
2. The retracting mechanism is a mechanism which constantly urges the moving element sandwiching member in a direction of being pressed against the moving element, and allows the retracting movement in the opposite direction against the urging force. The paper width detection device according to claim 1.
【請求項3】 前記一対の紙幅規制部材は共に可動でラ
ックとピニオンを介して互いに連結されており、一方の
紙幅規制部材を移動操作するとそれに連動して他方の紙
幅規制部材も一方の紙幅規制部材とは逆方向に等距離移
動して両紙幅規制部材の間隔が中央基準で広狭変化する
ことを特徴とする請求項1に記載の紙幅検知装置。
3. The pair of paper width regulating members are both movable and connected to each other via a rack and a pinion, and when one paper width regulating member is moved and operated, the other paper width regulating member is also regulated to one paper width regulating member. 2. The paper width detection device according to claim 1, wherein the paper width detection device moves equidistantly in the opposite direction to the member, and the distance between both paper width regulation members varies widely with respect to the center.
【請求項4】 手差しシートを支持するシート支持手段
と、 前記シート支持手段に支持されるシートの紙幅を検知す
るために設けられた請求項1乃至同3の何れか1項に記
載の紙幅検知装置と、 前記シートを送り出すシート給送手段と、を備えたこと
を特徴とするシート給送装置。
4. The sheet width detecting means according to claim 1, which is provided to detect a sheet width of the sheet supported by the sheet supporting means and a sheet supported by the sheet supporting means. A sheet feeding apparatus comprising: an apparatus; and a sheet feeding unit that feeds the sheet.
【請求項5】 請求項4に記載のシート給送装置と、 前記シート給送装置から送り出されたシートに画像を形
成する画像形成手段と、を備えたことを特徴とする画像
形成装置。
5. An image forming apparatus, comprising: the sheet feeding device according to claim 4; and an image forming unit that forms an image on a sheet fed from the sheet feeding device.
JP6037760A 1994-02-10 1994-02-10 Paper width detector, sheet feeder and image forming device Pending JPH07223758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6037760A JPH07223758A (en) 1994-02-10 1994-02-10 Paper width detector, sheet feeder and image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6037760A JPH07223758A (en) 1994-02-10 1994-02-10 Paper width detector, sheet feeder and image forming device

Publications (1)

Publication Number Publication Date
JPH07223758A true JPH07223758A (en) 1995-08-22

Family

ID=12506433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6037760A Pending JPH07223758A (en) 1994-02-10 1994-02-10 Paper width detector, sheet feeder and image forming device

Country Status (1)

Country Link
JP (1) JPH07223758A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6007889A (en) * 1998-06-22 1999-12-28 Target Technology, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6544616B2 (en) 2000-07-21 2003-04-08 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6764735B2 (en) 1998-06-22 2004-07-20 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6790503B2 (en) 1998-06-22 2004-09-14 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6841219B2 (en) 1998-06-22 2005-01-11 Han H. Nee Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US7045187B2 (en) 1998-06-22 2006-05-16 Nee Han H Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
JP2015157693A (en) * 2014-02-25 2015-09-03 株式会社リコー Sheet loading device and image formation apparatus
JP2019206434A (en) * 2018-05-30 2019-12-05 ブラザー工業株式会社 Printer
US10865063B2 (en) 2017-12-27 2020-12-15 Canon Kabushiki Kaisha Sheet storage device and image forming apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6852384B2 (en) 1998-06-22 2005-02-08 Han H. Nee Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6007889A (en) * 1998-06-22 1999-12-28 Target Technology, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US7045187B2 (en) 1998-06-22 2006-05-16 Nee Han H Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6764735B2 (en) 1998-06-22 2004-07-20 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6790503B2 (en) 1998-06-22 2004-09-14 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6841219B2 (en) 1998-06-22 2005-01-11 Han H. Nee Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6280811B1 (en) 1998-06-22 2001-08-28 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6896947B2 (en) 1998-06-22 2005-05-24 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US6544616B2 (en) 2000-07-21 2003-04-08 Target Technology Company, Llc Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
US10183818B2 (en) 2014-02-25 2019-01-22 Ricoh Company, Ltd. Sheet loader, image forming apparatus incorporating the sheet loader, and image reader incorporating the sheet loader
JP2015157693A (en) * 2014-02-25 2015-09-03 株式会社リコー Sheet loading device and image formation apparatus
US10865063B2 (en) 2017-12-27 2020-12-15 Canon Kabushiki Kaisha Sheet storage device and image forming apparatus
JP2019206434A (en) * 2018-05-30 2019-12-05 ブラザー工業株式会社 Printer
US10843489B2 (en) 2018-05-30 2020-11-24 Brother Kogyo Kabushiki Kaisha Printing device having sheet support portion movable to range exceeding sheet width and also exceeding range of sheet width detection

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