JPH04164752A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPH04164752A
JPH04164752A JP2290464A JP29046490A JPH04164752A JP H04164752 A JPH04164752 A JP H04164752A JP 2290464 A JP2290464 A JP 2290464A JP 29046490 A JP29046490 A JP 29046490A JP H04164752 A JPH04164752 A JP H04164752A
Authority
JP
Japan
Prior art keywords
sheet
sheets
copying
separation
separating
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
JP2290464A
Other languages
Japanese (ja)
Inventor
Hiroshi Tabuchi
田渕　浩史
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2290464A priority Critical patent/JPH04164752A/en
Priority to CA002043665A priority patent/CA2043665C/en
Priority to GB9112594A priority patent/GB2249082B/en
Priority to DE4121296A priority patent/DE4121296A1/en
Priority to GB9121895A priority patent/GB2250715A/en
Priority to CA002053555A priority patent/CA2053555C/en
Priority to DE4135315A priority patent/DE4135315A1/en
Publication of JPH04164752A publication Critical patent/JPH04164752A/en
Priority to US07/975,165 priority patent/US5293204A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/5215—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
    • B65H3/5223—Retainers of the pad-type, e.g. friction pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • G03G15/6511—Feeding devices for picking up or separation of copy sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/212—Rotary position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/60—Details of intermediate means between the sensing means and the element to be sensed
    • B65H2553/61—Mechanical means, e.g. contact arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/004—Separation device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00405—Registration device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00556—Control of copy medium feeding

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE:To separate and feed only the sheet to be fed by installing a sheet separating mechanism which separates multiple sheets after they are delivered between a sheet feeding part and a sheet copying part from the sheet feeding part. CONSTITUTION:A sheet separating mechanism 21 is installed to separate multiple sheets 2 after the multiple sheets 2 are delivered between a sheet feeding part 3 to feed the sheets 2 and a copying part 1 from the sheet supplying part. A sheet position detecting means 24 is installed between the separating mechanism 21 and the sheet copying part 1 to detect positions of the separated sheets 2, so that synchronizing with the copying stage of the sheets 2 can be made.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明はシートカセット内に積み重ねられたシートを一
枚ずつシート複写部に搬送し、複写する複写機に関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a copying machine that transports sheets stacked in a sheet cassette one by one to a sheet copying section and copies them.

（従来の技術） 第４図は例えば特公昭６３−５２３７８号公報に示され
た従来の給紙装置を示す断面図であり、図において（１
）は複写を行なう感光ドラム、（２）はシート、（３）
はシートカセット、（４）はソートカセット（３）内で
シート（２）か積み重ねられる中板、（５）は中板（４
）を上方に押し上げるバネ、（６）はシー　ト（２）を
分離するためのシート分離爪、（７）はシート（２）を
搬送するピックアップローラ、（８ａ）及び（８ｂ）は
レジスタローラ、（９ａ）及び（９ｂ）はシート（２）
をレジスタローラ（８ａ）及び（８ｂ）に案内する固定
ガイド板、（１０）はシート（２）をレジスタローラ（
８ａ）及び（８ｂ）に案内する可動ガイド板、（ｌｌａ
）及び（ｌｌｂ）はシート（２）を感光ドラム（１）へ
案内するガイド板、（１２）はコロナ放を器、（１３）
は感光ドラム（１）の端邪に設けられた任離ベルト、（
１４）は分離ローラ、（１５）は分離ローラ（１４）に
圧接する分離コロ、（１６）は定着器、（１７）はシー
ト（２）を定着器（１６）に搬送する搬送ベルトである
。(Prior Art) FIG. 4 is a sectional view showing a conventional paper feeding device disclosed in, for example, Japanese Patent Publication No. 63-52378.
) is the photosensitive drum for copying, (2) is the sheet, (3)
is a sheet cassette, (4) is a middle plate where sheets (2) are stacked in the sorting cassette (3), and (5) is a middle plate (4).
), (6) is a sheet separation claw for separating sheet (2), (7) is a pickup roller that conveys sheet (2), (8a) and (8b) are register rollers, (9a) and (9b) are sheets (2)
A fixed guide plate (10) guides the sheet (2) to the register rollers (8a) and (8b).
8a) and (8b), a movable guide plate (lla
) and (llb) are guide plates that guide the sheet (2) to the photosensitive drum (1), (12) is a corona release device, (13)
is a release belt installed at the edge of the photosensitive drum (1), (
14) is a separation roller, (15) is a separation roller that presses against the separation roller (14), (16) is a fixing device, and (17) is a conveyor belt that conveys the sheet (2) to the fixing device (16).

次に動作について説明する。感光ドラム（１）のイ泉に
同期して搬送されるシート（２）はシートカセット（３
）内の中板（４）上に積み重ねられており、中板（４）
はバネ（５）により上方に押し上げられシート分離爪（
６）によりシート（２）の高さか一定に保持されている
。シート（２）はその位置から円周の一部を切欠いたピ
ックアップローラ（ア）か回転することによりシートカ
セット（３）より一枚ずつ送り出され所定の長さだけ搬
送される。送り出されたシート（２）は固定ガイド板（
９ａ）及び（９ｂ）と可動ガイド板（１０）に案内され
、レジスタローラ（８ａ）及び（８ｂ）に至り、さらに
ガイド板（ｌｌａ）及び（ｌｌｂ）に案内され感光ドラ
ム（＋）に至る。Next, the operation will be explained. The sheet (2) conveyed in synchronization with the spring of the photosensitive drum (1) is transferred to the sheet cassette (3).
) is stacked on top of the middle plate (4) inside the middle plate (4).
is pushed upward by the spring (5) and the sheet separation claw (
6) keeps the height of the seat (2) constant. The sheets (2) are sent out one by one from the sheet cassette (3) by rotation of a pickup roller (A) having a part of the circumference cut out from that position, and are conveyed by a predetermined length. The fed sheet (2) passes through the fixed guide plate (
9a) and (9b) and the movable guide plate (10) to reach register rollers (8a) and (8b), and further guided by guide plates (lla) and (llb) to reach the photosensitive drum (+).

感光ドラム（１）の端部には分離ベルト（１３）か設け
られており、シート（２）の一端は感光ドラム（１）か
ら剥離された状態でコロナ放電器（１２）からの放電に
より電位が加えられ、感光ドラム（１）のトナー像はこ
こでシート（２）に複写する。転写終了後、シート（２
）は分離ベルト（１３）により感光ドラム（１）からシ
ートの先端か分離されその先端が分離ローラ（１４）と
それに圧接する分離コロ（１５）の間に挟持されて感光
ドラム（１）から完全に分離され、続いて搬送ベルト（
１７）により定着器（１６）に搬送される。A separation belt (13) is provided at the end of the photosensitive drum (1), and one end of the sheet (2) is heated to a potential by discharge from the corona discharger (12) while being peeled off from the photosensitive drum (1). is added, and the toner image on the photosensitive drum (1) is now copied onto the sheet (2). After the transfer is completed, the sheet (2
) is separated from the photosensitive drum (1) by the separating belt (13), and the leading edge is sandwiched between the separating roller (14) and the separating roller (15) that is in pressure contact with it, so that the sheet is completely removed from the photosensitive drum (1). and then the conveyor belt (
17) to the fixing device (16).

（発明が解決しようとする課題） 従来の複写機は、以上のように構成されているので給紙
の際、複数枚送りか生した場合、シートか複数枚重なっ
た状態で搬送され、シートの搬送と複写の同期か取れな
い場合や紙ジヤムや転写不良等による画質の劣化か生ず
るという問題点かあった。(Problems to be Solved by the Invention) Conventional copying machines are configured as described above, so when feeding multiple sheets, the sheets are conveyed in an overlapping state, causing the sheets to overlap. There were problems in that the conveyance and copying could not be synchronized, and the image quality deteriorated due to paper jams, poor transfer, etc.

本発明は上記のような問題点を解決するためになされた
もので給紙の際に複数枚送りか生した場合においても、
給紙すべきシートのみを分離し送り出し、−枚ずつ正確
に複写する複写機を提供することを目的とする。The present invention was made to solve the above-mentioned problems, and even when feeding multiple sheets during paper feeding,
To provide a copying machine that separates and sends out only the sheets to be fed and accurately copies sheets one by one.

（課題を解決するための手段） この発明に係る複写機は、シートを供給するシート供給
部と複写部との間に前記シート供給部から複数枚のシー
トか取り出されたときにこれらを分離させるシート分離
機構を取り付け、さらに当該分離機構とシート複写部と
の間にシート位置検出手段を設けたものである。(Means for Solving the Problems) A copying machine according to the present invention separates a plurality of sheets when they are taken out from the sheet supply section between a sheet supply section that supplies sheets and a copy section. A sheet separating mechanism is attached, and a sheet position detecting means is further provided between the separating mechanism and the sheet copying section.

（作用） この発明における給紙装置はソート供給部において複数
枚送りが生じた場合に分離機構部において一枚ずつに分
離し、さらに分離されたシートの位置を検出することに
より、シートの複写段階との同期をとる。(Function) The paper feeding device of the present invention separates sheets one by one in the separation mechanism when a plurality of sheets are fed in the sorting and feeding section, and further detects the position of the separated sheets. synchronize with.

（発明の実施例） 以下、この発明の一実施例を図について説明する。なお
説明を省略したものは従来例と同様である。第１図にお
いて（１８）はピンクアンプローラ（７）とレジスタロ
ーラ（８ａ）及び（８ｂ）の間に設けられ、矢線Ａ方向
に回転駆動するローラ、（１９）はゴム等の材質からな
る分離片、（２０）はローラ（１８）に分離片（１９）
を押圧するバネ等の材料からなる押圧片、（２１）はロ
ーラ（１８）、分離片（１９）、押圧片（２０）より構
成される分離機構、（２２ａ）及び（２２ｂ）はシート
（２）を分離機構（２Ｉ）に案内するガイド板、（２４
）はシート（２）の先端位置を検出するセンサーである
。(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the parts whose explanation is omitted are the same as those of the conventional example. In Fig. 1, (18) is a roller provided between the pink unroller (7) and register rollers (8a) and (8b) and rotated in the direction of arrow A, and (19) is made of a material such as rubber. The separation piece (20) is the separation piece (19) on the roller (18).
(21) is a separation mechanism composed of a roller (18), a separating piece (19), and a pressing piece (20); (22a) and (22b) are sheet (2) ) to the separation mechanism (2I), (24
) is a sensor that detects the position of the leading edge of the sheet (2).

第２図は第１図に示す分離機構（２１）の部分拡大図で
あり、第１図と同一部材には同一符号を付している。第
２図において（２５）は給送すべき最上層のシート、（
２６）は第２枚目以降の複数枚送りされたシート、矢線
Ｂは押圧片（２０）によって生しる付勢力を示し、Ｎｌ
はローラ（１８）とシート（２５）との間に生しる摩擦
力を、Ｎ２はシート（２５）とシート（２６）との間に
生しる摩擦力を、Ｎ３はシート（２６）と分離片（１９
）との間に生しる摩擦力をそれぞれ示している。FIG. 2 is a partially enlarged view of the separation mechanism (21) shown in FIG. 1, and the same members as in FIG. 1 are given the same reference numerals. In FIG. 2, (25) is the top layer sheet to be fed, (
26) indicates the second and subsequent sheets that have been fed, the arrow B indicates the biasing force generated by the pressing piece (20), and Nl
is the frictional force generated between the roller (18) and the sheet (25), N2 is the frictional force generated between the sheet (25) and the sheet (26), and N3 is the frictional force generated between the sheet (26) and the sheet (26). Separation piece (19
) shows the frictional force that occurs between the two.

上記のように構成された給紙装置の動作を説明する。シ
ート（２）はシートカセット（３）内に積み重ねられて
おり、ピックアップローラ（７）が回転することにより
シートカセット（３）より１枚ずつ送り出され所定の長
さたけ搬送される。送り出されたソート（２）はガイド
板（２２ａ）（２２ｂ）に案内され、分離機構に至る。The operation of the paper feeding device configured as described above will be explained. The sheets (2) are stacked in a sheet cassette (3), and as a pickup roller (7) rotates, the sheets are fed out one by one from the sheet cassette (3) and conveyed a predetermined length. The sent out sort (2) is guided by guide plates (22a) (22b) and reaches the separation mechanism.

この際に複数枚送りか生しると、矢線Ａ方向に回転する
ローラ（１８）により最上層のシート（２５）は摩擦力
Ｎ１によってローラ（１８）と同時に回転して搬送され
、第２枚以降のシート（２６）は摩擦力Ｎ２より大きな
摩擦力Ｎ３のよって搬送を阻止されることにより、複数
枚送りされたソートを１枚ずつ分離して搬送する。送り
出されたシ−ト（２５）は検出センサー（２４）により
先端位置を検出され、感光ドラム（１）の像と同期をと
る。検出センサー（２４）を通過したシート（２）はガ
イド板（２３）と可動ガイド板（１０）に案内され、レ
ジスタローラ（８ａ）及び（８ｂ）に至り、さらにガイ
ド板（ｌｌａ）及び（Ｉｌｂ）に案内され感光ドラム（
１）に至る。これ以降の動作は従来例と同様である。At this time, if multiple sheets are fed, the uppermost sheet (25) is conveyed by the roller (18) rotating in the direction of the arrow A, rotating simultaneously with the roller (18) due to the frictional force N1, and the second The subsequent sheets (26) are prevented from being conveyed by the frictional force N3, which is greater than the frictional force N2, so that the sorted sheets that have been fed in plurality are separated and conveyed one by one. The tip position of the fed sheet (25) is detected by a detection sensor (24) and synchronized with the image on the photosensitive drum (1). The sheet (2) that has passed the detection sensor (24) is guided by the guide plate (23) and the movable guide plate (10), reaches the register rollers (8a) and (8b), and is further guided by the guide plates (lla) and (Ilb). ) and guided to the photosensitive drum (
This leads to 1). The subsequent operations are the same as in the conventional example.

なお上記実施例では分離片（１９）の取付は角度により
シート（２）が分離機構（２１）へ進入時、分離片の摩
擦力により座屈し、紙ジヤムが発生するため、分離片（
Ｉ９）の取付は角度調整が困難であるという問題がある
。上記問題点を解決するため、第３図に示すように分離
片（１９）を分離部近傍まで低摩擦材からなるシート（
２７）によりカバーしたので分離片（１９）の取付は角
度調整をしなくてもまた腰の弱いシート（２）てあって
も、分離機構（２１）へ進入時ソート（２）が座屈する
ことはなく、組立作業性もよく上記実施例と同様の効果
を奏する。In the above embodiment, the separating piece (19) is attached due to the angle at which the sheet (2) enters the separating mechanism (21), and when the sheet (2) enters the separating mechanism (21), it buckles due to the frictional force of the separating piece and a paper jam occurs.
There is a problem in mounting I9) that it is difficult to adjust the angle. In order to solve the above problem, as shown in Fig. 3, the separating piece (19) is extended to the vicinity of the separating part by a sheet (19) made of a low friction material.
27), the separation piece (19) can be installed without adjusting the angle, and even if the seat (2) has a weak backrest, the sort (2) will not buckle when entering the separation mechanism (21). However, the assembly workability is good and the same effects as in the above embodiments are achieved.

また上記実施例では検出センサー（２４）を分離機構（
２１）とレジスタローラ（８ａ）及び（８ｂ）の間に設
けたがレジスタローラ（８ａ）及び（８ｂ）と感光ドラ
ム（１）の間に設けても上記実施例と同様の効果を奏す
る。Further, in the above embodiment, the detection sensor (24) is connected to the separation mechanism (
21) and the register rollers (8a) and (8b), the same effect as in the above embodiment can be obtained even if it is provided between the register rollers (8a) and (8b) and the photosensitive drum (1).

（発明の効果） 以上のように、この発明によればシート供給部とシート
複写部との間にシート分離機構を設けたので給紙の際に
複数枚送りか生した場合においても、給紙すべきシート
のみを分離し送り出し、かつ係るシート分離機構とソー
ト複写部との間にシート位置検出手段を設けたため正確
に複写することかできる効果がある。(Effects of the Invention) As described above, according to the present invention, since the sheet separation mechanism is provided between the sheet supply section and the sheet copying section, even when multiple sheets are fed during paper feeding, the paper feeding Since only the desired sheets are separated and sent out, and a sheet position detection means is provided between the sheet separating mechanism and the sorting/copying section, accurate copying can be achieved.

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

第１図はこの発明の一実施例による本体装置の概略断面
図、第２図は第１図に示す分離機構の部分拡大図、第３
図はこの発明による他の実施例、第４図は従来の本体装
置の概略断面図である。 図において（２）はシート、（３）はシート力セント、
（４）は中板、（５）はバネ、（６）はソート分離爪、
（７）はピックアップローラ、（１８）はローラ、（１
９）は分離片、（２０）は押圧片、（２１）は分離機構
、（２４）は検出センサーである。 なお、各図中同一符号は同−又は相当部分を示す。FIG. 1 is a schematic sectional view of a main body device according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of the separation mechanism shown in FIG. 1, and FIG.
The figure shows another embodiment of the present invention, and FIG. 4 is a schematic sectional view of a conventional main body device. In the figure, (2) is the seat, (3) is the seat force cent,
(4) is the middle plate, (5) is the spring, (6) is the sort separation claw,
(7) is a pickup roller, (18) is a roller, (1
9) is a separation piece, (20) is a pressing piece, (21) is a separation mechanism, and (24) is a detection sensor. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] 積み重ねられたシートを取り出すシート供給部とかかる
シートに複写するシート複写部とを有する複写機におい
て、当該シート供給部と当該シート複写部との間に前記
シート供給部から複数枚のシートが取り出されたとき、
これらを分離させるシート分離機構を有し、さらに当該
分離機構と当該シート複写部との間にシート位置検出装
置を設けたことを特徴とする複写機。In a copying machine having a sheet supply section for taking out stacked sheets and a sheet copying section for copying onto the sheets, a plurality of sheets are taken out from the sheet supply section between the sheet supply section and the sheet copying section. When
A copying machine comprising a sheet separation mechanism for separating these sheets, and further comprising a sheet position detection device between the separation mechanism and the sheet copying section.
JP2290464A 1990-10-25 1990-10-25 Copying machine Pending JPH04164752A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2290464A JPH04164752A (en) 1990-10-25 1990-10-25 Copying machine
CA002043665A CA2043665C (en) 1990-10-25 1991-05-31 Copying machine
GB9112594A GB2249082B (en) 1990-10-25 1991-06-12 Copying machine
DE4121296A DE4121296A1 (en) 1990-10-25 1991-06-27 COPIER
GB9121895A GB2250715A (en) 1990-10-25 1991-10-15 Copier with a superposed-sheet separation mechanism,
CA002053555A CA2053555C (en) 1990-10-25 1991-10-16 Copier with a superposed-sheet separation mechanism
DE4135315A DE4135315A1 (en) 1990-10-25 1991-10-25 COPIER
US07/975,165 US5293204A (en) 1990-10-25 1992-11-12 Copier with a superposed-sheet separation mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2290464A JPH04164752A (en) 1990-10-25 1990-10-25 Copying machine

Publications (1)

Publication Number Publication Date
JPH04164752A true JPH04164752A (en) 1992-06-10

Family

ID=17756360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2290464A Pending JPH04164752A (en) 1990-10-25 1990-10-25 Copying machine

Country Status (4)

Country Link
JP (1) JPH04164752A (en)
CA (2) CA2043665C (en)
DE (2) DE4121296A1 (en)
GB (2) GB2249082B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0981016A (en) * 1995-09-19 1997-03-28 Fujitsu Ltd Electrophotographic image forming device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859137A (en) * 1981-09-25 1983-04-08 Konishiroku Photo Ind Co Ltd Paper feeder

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US4025187A (en) * 1974-09-05 1977-05-24 Xerox Corporation Buckle control system
US4113244A (en) * 1975-04-15 1978-09-12 Kurt Ruenzi Apparatus for automatically feeding individual sheets from a stack through an office machine
DE2704045C3 (en) * 1977-02-01 1979-06-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device to prevent double triggers
JPS5667858A (en) * 1979-11-08 1981-06-08 Canon Inc Sheet registration mechanism releasing device
EP0031726B1 (en) * 1979-12-29 1984-12-12 Mita Industrial Co. Ltd. Electrostatic copying apparatus
DE3104631A1 (en) * 1980-02-11 1981-11-26 Exxon Research and Engineering Co., 07932 Florham Park, N.J. FACSIMILE EQUIPMENT
US4306713A (en) * 1980-04-25 1981-12-22 International Business Machines Corporation Document feeder
DE3206993C2 (en) * 1981-02-27 1985-08-22 Canon K.K., Tokio/Tokyo Image forming apparatus with means for controlling the transport of recording material in the event of its faulty multiple feed
JPH0623872B2 (en) * 1982-11-30 1994-03-30 三田工業株式会社 Electrostatic copying machine
JPS61132941A (en) * 1984-12-03 1986-06-20 Ricoh Co Ltd Copying device
JPS62140041U (en) * 1986-02-28 1987-09-03
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Publication number Priority date Publication date Assignee Title
JPS5859137A (en) * 1981-09-25 1983-04-08 Konishiroku Photo Ind Co Ltd Paper feeder

Also Published As

Publication number Publication date
CA2043665C (en) 1998-12-01
GB2249082A (en) 1992-04-29
GB9112594D0 (en) 1991-07-31
DE4135315A1 (en) 1992-04-30
CA2053555C (en) 1995-01-17
CA2053555A1 (en) 1992-04-26
DE4121296A1 (en) 1992-04-30
GB2250715A (en) 1992-06-17
CA2043665A1 (en) 1992-04-26
GB9121895D0 (en) 1991-11-27
GB2249082B (en) 1994-06-29

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