JPS6117731B2 - - Google Patents
Info
- Publication number
- JPS6117731B2 JPS6117731B2 JP53027785A JP2778578A JPS6117731B2 JP S6117731 B2 JPS6117731 B2 JP S6117731B2 JP 53027785 A JP53027785 A JP 53027785A JP 2778578 A JP2778578 A JP 2778578A JP S6117731 B2 JPS6117731 B2 JP S6117731B2
- Authority
- JP
- Japan
- Prior art keywords
- document
- feed roller
- conveyance
- feed
- image
- 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.)
- Expired
Links
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Description
【発明の詳細な説明】 本発明は、複写機の原稿送り装置に関する。[Detailed description of the invention] The present invention relates to a document feeding device for a copying machine.
原稿を照明走査するために、原稿をその照明位
置に送り込みここを通過せしめるようにした複写
機の原稿送り装置は周知である。この場合、照明
位置を通過する原稿は、できるだけその平面性を
保つた状態で搬送されるべきである。原稿が弛緩
した状態で照明位置を搬送されその状態で照明走
査が行われると、原稿の画像が忠実に複写され
ず、複写画像にゆがみを生ずることになるからで
ある。この点を考虜して、原稿をドラムにクラン
プし、又はグリツパーに係止して搬送することに
より原稿の平面性を得るようにした原稿送り装置
が既に提案されている。ところが従来のこの装置
は、その機構が複雑であるだけでなく、ドラム径
の大きさ又はグリツパーを装着したチエーンルー
プの長さにより、複写しようとする原稿の長さに
制約を受け、長尺原稿を搬送し得ない欠点を有し
ている。のみならず、ドラムのクランプ手段又は
グリツパーがその待機位置にあるとき以外は原稿
を送り込むことができず、これによつて複写機の
高速化が阻害される欠点も有している。 2. Description of the Related Art A document feeding device for a copying machine is well known in which a document is fed into and passes through an illumination position in order to illuminate and scan the document. In this case, the document passing through the illumination position should be conveyed while maintaining its flatness as much as possible. This is because if the document is conveyed through the illumination position in a relaxed state and illumination scanning is performed in that state, the image of the document will not be faithfully copied and the copied image will be distorted. Taking this point into consideration, a document feeding device has already been proposed in which the document is conveyed by clamping it on a drum or by engaging it with a gripper to obtain flatness of the document. However, this conventional device not only has a complicated mechanism, but is also limited by the length of the document to be copied due to the size of the drum diameter or the length of the chain loop attached to the gripper. It has the disadvantage that it cannot be transported. In addition, the document cannot be fed in unless the clamping means or gripper of the drum is in its standby position, which also has the disadvantage of hindering the speeding up of the copying machine.
本発明は上記従来の欠点を除去した原稿送り装
置を提供しようとするものであり、以下に本発明
の実施例を図面に従つて説明する。 The present invention aims to provide a document feeding device that eliminates the above-mentioned conventional drawbacks, and embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係る原稿送り装置１を備えた
複写機を示す。原稿送り装置１は、複写機の本体
に設けられた原稿台２を有し、オペレータ３はこ
の原稿台２から原稿４を挿入する。その場合、オ
ペレータ３は、複写しようとする原稿面（以外、
表面という）を下側にセツトする。かくして原稿
送り装置１に挿入された原稿は、一連の送り込み
ローラ５と、ガイド板６とによつて水平方向から
直立方向に向きを換えられながら、原稿照明位置
Ａへ向けて搬送される（矢印Ｐ参照）。 FIG. 1 shows a copying machine equipped with a document feeder 1 according to the present invention. The document feeder 1 has a document table 2 provided in the main body of the copying machine, and an operator 3 inserts a document 4 from the document table 2. In that case, the operator 3 should check the side of the document (other than the side to be copied).
(referred to as the front side) on the lower side. The document thus inserted into the document feeder 1 is conveyed toward the document illumination position A while being turned from a horizontal direction to an upright direction by a series of feed rollers 5 and a guide plate 6 (as indicated by the arrow). (See P).
原稿の搬送方向Ｐにおける照明位置Ａの前後に
は、搬送部材が第１フイードローラ対７からなる
第１原稿搬送手段と、搬送部材が第２フイードロ
ーラ対８からなる第２原稿搬送手段とが配設さ
れ、これらフイードローラ対７，８はそれぞれ矢
印で示す方向に回転駆動される。第２図に明示す
るように第１フイードローラ対７と第２フイード
ローラ対８との間には、露光ガイド板９，９ａが
固定配置され、図における右側に位置する露光ガ
イド板９ａには光の通過を許容する露光窓９ｂが
形成されている。露光ガイド板９，９ａの右方に
は適数の光源１０、例えば螢光灯が固定配置され
ている。１１は露光ガイド板９ａに固設された反
射板である。 Before and after the illumination position A in the document conveyance direction P, a first document conveyance means whose conveyance member includes a first feed roller pair 7 and a second document conveyance means whose conveyance member consists of a second feed roller pair 8 are disposed. The feed roller pairs 7 and 8 are driven to rotate in the directions indicated by the arrows. As clearly shown in FIG. 2, exposure guide plates 9 and 9a are fixedly arranged between the first feed roller pair 7 and the second feed roller pair 8, and the exposure guide plate 9a located on the right side in the figure is provided with light. An exposure window 9b is formed that allows the light to pass through. A suitable number of light sources 10, for example fluorescent lamps, are fixedly arranged on the right side of the exposure guide plates 9, 9a. Reference numeral 11 denotes a reflecting plate fixed to the exposure guide plate 9a.
上記の如く送り込みローラ５により搬送された
原稿４は、引き続き第１及び第２フイードローラ
対７，８により上方向に搬送力を受け、露光ガイ
ド板９，９ａの間を搬送されて照明位置Ａを通過
する。このとき原稿４の表面が光源１０により照
明される。原稿表面で反射した光は例えばミラー
とレンズから成る光学系（図示せず）を介して、
移動する感光体（図示せず）に照射され、スリツ
ト露光が行われる。 The original 4 conveyed by the feed roller 5 as described above continues to receive an upward conveying force from the first and second feed roller pair 7, 8, and is conveyed between the exposure guide plates 9, 9a to reach the illumination position A. pass. At this time, the surface of the document 4 is illuminated by the light source 10. The light reflected on the surface of the original passes through an optical system (not shown) consisting of a mirror and a lens, for example.
A moving photoreceptor (not shown) is irradiated with slit exposure.
原稿４は上記の如く照明されるが、その際、原
稿はできるだけ平面性を保つ必要のあることは先
に説明した。本発明に係る装置ではこの要求を満
すために、第１フイードローラ対７の原稿送り速
さが第２フイードローラ８の原稿送り速さよりも
小さく設定されている。即ち、第１フイードロー
ラ対７の周速度v1と第２フイードローラ対８の周
速度v2とが、常にv1＜v2なる関係を維持するよう
に構成されている。これにより、第１及び第２フ
イードローラ対７，８によつて搬送されつつある
原稿４は、その搬送方向に引張作用を受け、確実
に平面状態を保たれる。かくしてこの原稿で反射
した光により形成される複写画像にゆがみを生ず
るような不都合は除去される。 The original 4 is illuminated as described above, and as previously explained, it is necessary to maintain the flatness of the original as much as possible. In the apparatus according to the present invention, in order to satisfy this requirement, the document feeding speed of the first feed roller pair 7 is set to be smaller than the document feeding speed of the second feed roller 8. That is, the configuration is such that the circumferential velocity v 1 of the first feed roller pair 7 and the circumferential velocity v 2 of the second feed roller pair 8 always maintain the relationship v 1 <v 2 . Thereby, the document 4 being conveyed by the first and second feed roller pair 7, 8 is subjected to a tensile action in the direction of conveyance, and is reliably maintained in a flat state. In this way, the disadvantage of distortion of the copied image formed by light reflected by the original document is eliminated.
尚、解像力の高い複写画像を得るため、また変
倍複写機では正しい倍率の複写画像を得るため
に、照明位置を通過する原稿の速さと感光体の移
動速さが所定の関係を保つている必要があるの
で、上記周速v1とv2の差△ｖは、この所定の関係
を維持できる程度に設定すべきである（△ｖが大
き過ぎると、原稿が一方のフイードローラ対だけ
から搬送力を受けている時期に、原稿の送り速さ
を上記所定の関係に保つことができなくなる恐れ
がある）。 Note that in order to obtain a copy image with high resolution, and in order to obtain a copy image with the correct magnification in a variable-magnification copying machine, the speed of the document passing through the illumination position and the speed of movement of the photoreceptor must maintain a predetermined relationship. Therefore, the difference △v between the circumferential speeds v 1 and v 2 should be set to such an extent that this predetermined relationship can be maintained (if △v is too large, the document will be transported only from one pair of feed rollers). (There is a possibility that it will not be possible to maintain the document feeding speed within the above-mentioned predetermined relationship during the period when the document is being subjected to force.)
また上記の如くv1とv2とに差があれば、一般に
原稿はフイードローラ対に対してスリツプするこ
とになり、原稿４の表面の像が鉛筆により書かれ
たものであると、上記スリツプが原因して鉛筆書
きの原稿像が消えてしまう可能性がある。本発明
に係る装置においてはこの不都合を回避するた
め、２つのフイードローラ対７，８における原稿
表面と接するローラ７ａ，８ａのうち、少くとも
一方のローラの表面を平滑に形成し、このローラ
と原稿との摩擦係数が小さくなるように構成して
ある。この構成により、平滑表面のローラと原稿
とは滑らかにスリツプし、鉛筆書きの原稿像が擦
り作用によつて消えてしまうような不都合は除去
される。図示した実施例では、第２フイードロー
ラ対８における右側のローラ８ａが金属又はプラ
スチツク等の摩擦係数の小なる材料で表面平滑に
形成されており（表面平滑性を得るためには、例
えばローラの表面をクロームメツキした後バフ研
磨により表面処理する方法等が考えられる）、そ
の他のフイードローラ８ｂ；７ａ，７ｂは、例え
ばゴム等の摩擦係数の大きな材料で作られてい
る。この構成によれば、原稿が２つのフイードロ
ーラ対７，８から搬送力を受けているときに、原
稿４は第１フイードローラ対７の周速度で搬送さ
れ（第１フイードローラ対と原稿とは実質的にス
リツプしない）、第２フイードローラ対８の右側
のローラ８ａと原稿４とがスリツプする。これに
対し、上下２つのフイードローラ８ａ，７ａを共
に表面平滑に形成すれば、原稿４はこれら２つの
ローラ７ａ，８ａに対しスリツプすることにな
る。 Furthermore, if there is a difference between v 1 and v 2 as described above, the original will generally slip against the pair of feed rollers, and if the image on the surface of the original 4 is drawn with a pencil, the above slip will occur. There is a possibility that the original image written in pencil will disappear. In the apparatus according to the present invention, in order to avoid this inconvenience, at least one of the rollers 7a and 8a in contact with the surface of the document in the two feed roller pairs 7 and 8 is formed to have a smooth surface, and this roller and the document The structure is designed to reduce the coefficient of friction between the With this configuration, the smooth-surfaced roller and the document slip smoothly, and the inconvenience that the pencil-drawn document image disappears due to the rubbing action is eliminated. In the illustrated embodiment, the right roller 8a of the second feed roller pair 8 is made of a material with a low coefficient of friction such as metal or plastic and has a smooth surface. The other feed rollers 8b; 7a, 7b are made of a material with a large coefficient of friction, such as rubber, for example. According to this configuration, when the document is receiving a conveying force from the two feed roller pairs 7 and 8, the document 4 is conveyed at the circumferential speed of the first feed roller pair 7 (the first feed roller pair and the document are substantially (the document 4 does not slip), the right roller 8a of the second feed roller pair 8 and the document 4 slip. On the other hand, if both the upper and lower feed rollers 8a, 7a are formed to have smooth surfaces, the document 4 will slip on these two rollers 7a, 8a.
尚、上記の如くして照明を終えた原稿４は、排
出ローラ対１２によつて更に搬送され、排紙台１
３に排出される（第１図）。 The original 4 that has been illuminated as described above is further conveyed by a pair of ejection rollers 12 and placed on a paper ejection tray 1.
3 (Figure 1).
以上の如く上記構成によれば、構造が簡単であ
るにもかかわらず照明位置を通過する原稿の平面
性を確実に得ることができ、しかも長尺原稿であ
つても支障なく搬送することができる。のみなら
ず、多数の原稿を連続して送り込むように構成す
ることもでき、従来の原稿送り装置のように複写
機の高速化を阻害するような不都合も除去され
る。尚、本発明は図示した実施例に限定されるで
きものではない。例えば実施例においては第１及
び第２原稿搬送手段の搬送部材をフイードローラ
対として構成したが、この代りにベルトを使用す
ることもできる。この場合、第３図に示すように
第１及び第２フイードローラ対の各フイードロー
ラ（プーリ）７ｂ，７ａ；８ａ，８ｂの上方と下
方にそれぞれ相手ローラ（プーリ）７a′，７b′；
８b′，８a′を配置して、それぞれにベルト１４，
１５，１６，１７を巻き掛けることもできるし、
第４図に示すように左側のフイードローラ（プー
リ）７ｂ，８ｂにベルト１８を巻き掛け、又は右
側のフイードローラ７ａ，８ａに同様にベルト
（図示せず）を巻き掛けることもできる（この場
合にも上のローラの送り速さを大きくすることは
当然である）。たゞ左側のフイードローラ７ｂ，
８ｂにベルト１８を掛けるときは、このベルトと
して、原稿の画像幅より広幅のベルトを使用する
か、又は原稿の画像から外れた位置にベルトを配
置することが望ましい。原稿の画像部にロープ状
のベルトが位置すると、原稿の照明により、この
ベルトまでもが画像形成される恐れがあるからで
ある。また、右側のフイードローラ７ａ，８ａに
ベルトを掛けるときは、このベルトが照明を阻害
しないように、ベルトを配置すべきである（例え
ば原稿画像から外れた位置にベルトを配置す
る）。 As described above, according to the above configuration, although the structure is simple, it is possible to reliably obtain the flatness of the document passing through the illumination position, and furthermore, even a long document can be transported without any problem. . In addition, it can also be configured to feed a large number of originals in succession, eliminating the disadvantages of conventional document feeding devices that hinder the speeding up of copying machines. It should be noted that the present invention is not limited to the illustrated embodiment. For example, in the embodiment, the conveying members of the first and second document conveying means are constructed as a pair of feed rollers, but belts may be used instead. In this case, as shown in FIG. 3, feed rollers (pulleys) 7b, 7a of the first and second feed roller pairs; mating rollers (pulleys) 7a', 7b' above and below 8a, 8b, respectively;
8b', 8a' are arranged, and the belts 14, 8a' are arranged respectively.
You can also wrap 15, 16, 17,
As shown in FIG. 4, the belt 18 can be wound around the left feed rollers (pulleys) 7b, 8b, or a belt (not shown) can be similarly wound around the right feed rollers 7a, 8a (in this case, too. It is natural to increase the feed speed of the upper roller). Just the left feed roller 7b,
When the belt 18 is hung over the belt 8b, it is desirable to use a belt wider than the image width of the document, or to place the belt at a position away from the image of the document. This is because if a rope-shaped belt is located in the image area of the document, there is a possibility that an image will be formed on this belt due to the illumination of the document. Furthermore, when placing a belt on the right feed rollers 7a and 8a, the belt should be placed so that it does not obstruct illumination (for example, the belt should be placed at a position away from the original image).
第１図は本発明に係る原稿送り装置の部分断面
側面図、第２図は第１図の部分拡大部、第３図及
び第４図は他の実施例を示す部分断面側面図であ
る。
１……原稿送り装置、４……原稿、７，７ａ，
７ｂ，７a′，７b′、１６，１７，１８……第１原
稿搬送手段、８，８ａ，８ｂ，８a′，８b′１４，
１５，１８……第２原稿搬送手段、Ａ……照明位
置、v1，v2……原稿送り速さ。
FIG. 1 is a partially sectional side view of a document feeder according to the present invention, FIG. 2 is a partially enlarged portion of FIG. 1, and FIGS. 3 and 4 are partially sectional side views showing other embodiments. 1...Document feeder, 4...Document, 7, 7a,
7b, 7a', 7b', 16, 17, 18...first document conveyance means, 8, 8a, 8b, 8a', 8b'14,
15, 18...Second document transport means, A...Illumination position, v1 , v2 ...Document feeding speed.
Claims (1)
置された夫々対をなす搬送部材で構成された第１
及び第２原稿搬送手段を有し、これら原稿搬送手
段の搬送部材で原稿を挟持搬送することによつて
原稿がその照明位置を通過されるように構成され
た複写機の原稿送り装置において、前記第１原稿
搬送手段の原稿送り速さが、前記第２原稿搬送手
段の原稿送り速さよりも小さく設定されているこ
とと、前記第１及び第２原稿搬送手段における原
稿表面と接する少なくとも一方の搬送部材が、摩
擦係数の小さい材料で表面平滑に形成されている
こととを特徴とする前記原稿送り装置。1. A first conveyor member consisting of a pair of conveyance members arranged before and after the document illumination position in the document conveyance direction.
and a second document conveyance means, and the document feeder of the copying machine is configured such that the document passes through the illumination position by sandwiching and conveying the document between the conveyance members of these document conveyance means. The document feeding speed of the first document conveying means is set lower than the document feeding speed of the second document conveying means, and at least one of the document conveying means in contact with the surface of the document in the first and second document conveying means. The document feeding device as described above, wherein the member is made of a material with a small coefficient of friction and has a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2778578A JPS54122566A (en) | 1978-03-13 | 1978-03-13 | Manuscript delivery device for duplicating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2778578A JPS54122566A (en) | 1978-03-13 | 1978-03-13 | Manuscript delivery device for duplicating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54122566A JPS54122566A (en) | 1979-09-22 |
| JPS6117731B2 true JPS6117731B2 (en) | 1986-05-09 |
Family
ID=12230621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2778578A Granted JPS54122566A (en) | 1978-03-13 | 1978-03-13 | Manuscript delivery device for duplicating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54122566A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675335A (en) * | 1979-11-20 | 1981-06-22 | Toshiba Corp | Conveying mechanism for sheet |
| JPS57130340U (en) * | 1981-02-03 | 1982-08-13 | ||
| JPS5866973A (en) * | 1981-10-16 | 1983-04-21 | Hosiden Electronics Co Ltd | Electronic copying machine |
| JPS58191147U (en) * | 1982-06-11 | 1983-12-19 | 三洋電機株式会社 | paper feeder |
| JPS5948343A (en) * | 1982-09-11 | 1984-03-19 | Dainippon Screen Mfg Co Ltd | Sheet material feeder |
| JPH0611988Y2 (en) * | 1983-04-08 | 1994-03-30 | ミノルタカメラ株式会社 | Paper transport device |
| US4539752A (en) * | 1983-08-12 | 1985-09-10 | E.S.P. Systems, Inc. | Automatic sheet transport mechanism |
| JPS6061741A (en) * | 1983-09-16 | 1985-04-09 | Fuji Xerox Co Ltd | Original feed roll of copying machine |
| US5417413A (en) * | 1994-04-18 | 1995-05-23 | Hewlett-Packard Company | Uniform media tensioning of print media during transport in laser printer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010249U (en) * | 1973-05-25 | 1975-02-01 | ||
| JPS5342256B2 (en) * | 1973-10-31 | 1978-11-10 | ||
| JPS50152739A (en) * | 1974-05-29 | 1975-12-09 | ||
| JPS5921030B2 (en) * | 1976-02-13 | 1984-05-17 | キヤノン株式会社 | Sheet front/back conversion conveyance device |
-
1978
- 1978-03-13 JP JP2778578A patent/JPS54122566A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54122566A (en) | 1979-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4043665A (en) | Copier document handler | |
| JPS6169077A (en) | Automatic precollation copying equipment | |
| JPS6117731B2 (en) | ||
| US4101218A (en) | Electronic copying apparatus | |
| US4557592A (en) | Exposure-scanning apparatus | |
| JP3338191B2 (en) | Book original transporter | |
| JPH0314672Y2 (en) | ||
| EP0002257B1 (en) | Original feed apparatus for electrophotographic copying machine | |
| US3889943A (en) | Platen transport for automatic document handler | |
| JP2770178B2 (en) | Document feeder for image forming apparatus | |
| JPH0312762Y2 (en) | ||
| JPH0146414B2 (en) | ||
| US4012140A (en) | Copier document loading system | |
| JPS6331051Y2 (en) | ||
| JPS6012437A (en) | Sheet material conveyance device | |
| JPS5848668Y2 (en) | Document conveyance device in document scanning copying machine | |
| US3425332A (en) | Automatic separation system for sensitive paper and original paper in copying machine | |
| JPH0221474Y2 (en) | ||
| JPH032532Y2 (en) | ||
| JPS59163245A (en) | Sheet feeding device | |
| JPS6037558Y2 (en) | Sheet document conveyor | |
| JPH0246949B2 (en) | GENKOHANSOSOCHI | |
| GB1198539A (en) | Photocopying Apparatus. | |
| JPS59228465A (en) | reading device | |
| JPS59171941A (en) | Picture forming device |