JPH075719Y2 - Image reader - Google Patents
Image readerInfo
- Publication number
- JPH075719Y2 JPH075719Y2 JP1988133160U JP13316088U JPH075719Y2 JP H075719 Y2 JPH075719 Y2 JP H075719Y2 JP 1988133160 U JP1988133160 U JP 1988133160U JP 13316088 U JP13316088 U JP 13316088U JP H075719 Y2 JPH075719 Y2 JP H075719Y2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- guide member
- scanning
- moving
- scanning body
- 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 - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、原稿台（コンタクトガラス）固定型の複写機
およびファクシミリ等における画像読取装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an image reading apparatus for a fixed copyboard (contact glass) -type copying machine, a facsimile, or the like.
複写機およびファクシミリ等における画像読取装置の一
種に、第４図に示すように、装置本体１に固定された原
稿を載置するためのコンタクトガラス２の内方の走査部
３に、原稿のサイズに応じてコンタクトガラス２に沿っ
て往復移動する走査体４を配置するとともに、この走査
体４の照明光源4aや等倍密着センサ4bのセンサ処理基板
4cと、走査部３の近傍に配置された電源部５および信号
処理部６とを電気的に接続するフラットケーブルもしく
はフレキシブル基板等からなるケーブル７を走査部３内
でＵ字状に湾曲させて配置して構成された原稿台固定型
の画像読取装置が知られている。As shown in FIG. 4, as one type of image reading apparatus in a copying machine, a facsimile, etc., the size of the original is fixed on the scanning unit 3 inside the contact glass 2 for placing the original fixed on the apparatus main body 1. A scanning body 4 that reciprocates along the contact glass 2 is arranged in accordance with the above, and a sensor processing substrate for the illumination light source 4a of this scanning body 4 and the same-size contact sensor 4b.
A cable 7 made of a flat cable or a flexible substrate for electrically connecting 4c with the power supply unit 5 and the signal processing unit 6 arranged in the vicinity of the scanning unit 3 is curved in a U shape in the scanning unit 3. There is known an image reading apparatus of a fixed platen type which is arranged and configured.
ところで、近年の画像読取装置は、走査体４の画像読取
手段として、等倍結像素子4dを採用することにより、走
査部３の占める高さＨをより小さくできるようになっ
た。By the way, in the recent image reading apparatus, the height H occupied by the scanning unit 3 can be further reduced by adopting the equal-magnification imaging element 4d as the image reading unit of the scanning body 4.
しかしながら、この走査部３に配設されるケーブル７
は、使用されるケーブル（フラットケーブルもしくはフ
レキシブル基板）の腰の強さによって、その湾曲部Ａの
曲率、すなわち湾曲部Ａの占める高さｈが決定される。However, the cable 7 arranged in this scanning unit 3
The curvature of the curved portion A, that is, the height h occupied by the curved portion A is determined by the stiffness of the cable (flat cable or flexible substrate) used.
また、このケーブル７は、第５図に示すように、ケーブ
ル７の可動端7aの位置によって、自由な状態でのケーブ
ル７の湾曲部Ａの占める高さh1と、可動端7aにより規制
を受ける状態でのケーブル７の湾曲部Ａの占める高さh2
とでかなり差が生じる。Further, as shown in FIG. 5, the cable 7 is regulated by the position of the movable end 7a of the cable 7, the height h1 occupied by the curved portion A of the cable 7 in a free state, and the movable end 7a. Height h2 of the curved portion A of the cable 7 in the state
There is a big difference between and.
このため、前述のように、走査部３の高さＨを、走査体
４の占める高さに合わせて小さく設定した場合には、通
常のケーブル７の自由な状態における湾曲部Ａの占める
高さh1が走査部３の高さＨよりも大きくなって、このケ
ーブル７の湾曲部Ａが、第１図に示すように、コンタク
トガラス２の内面2aに接触せざるを得なくなる。Therefore, as described above, when the height H of the scanning unit 3 is set to be small according to the height occupied by the scanning body 4, the height occupied by the curved portion A in the free state of the normal cable 7 is set. Since h1 becomes larger than the height H of the scanning portion 3, the curved portion A of the cable 7 is forced to contact the inner surface 2a of the contact glass 2 as shown in FIG.
したがって、上述のような画像読取装置では、走査体４
の往復移動時に、コンタクトガラス２の内面2aとケーブ
ル７の湾曲部Ａとが接触したまま互いに摺擦されるた
め、 （１）コンタクトガラス２の内面2aが摺擦によって汚れ
て、読取画像の品質を劣化させる。Therefore, in the image reading apparatus as described above, the scanning member 4
Since the inner surface 2a of the contact glass 2 and the curved portion A of the cable 7 are rubbed against each other during the reciprocating movement of (1), the inner surface 2a of the contact glass 2 becomes dirty due to the rub and the quality of the read image is improved. Deteriorate.
（２）摺擦により生じる不安定な摩擦抵抗によって、走
査体４の走査性能に微振動などによる悪影響が及ぼされ
る。(2) The unstable frictional resistance caused by the rubbing adversely affects the scanning performance of the scanning body 4 due to microvibration or the like.
（３）摺擦による摩擦抵抗で、ケーブル７の湾曲部Ａの
移動が阻止され、ケーブル７のフラットな部分がこの湾
曲部Ａ内に折れ込んでケーブル７の寿命が低下する。(3) The frictional resistance caused by the rubbing prevents the curved portion A of the cable 7 from moving, and the flat portion of the cable 7 is folded into the curved portion A, so that the life of the cable 7 is reduced.
などの種々の不具合が生じていた。There were various problems such as.
本考案は、上述の課題を解決するため、上記画像読取装
置においてフレキシブルプリント基板が、その概湾曲部
の前後において略平行になるような直径を有するガイド
部材と、走査体の移動速度の約1/2の速度で走査体の移
動方向と同じ方向にガイド部材を移動させるガイド部材
駆動手段とを具備した構成である。In order to solve the above-mentioned problems, the present invention provides a guide member having a diameter such that a flexible printed circuit board is substantially parallel to the front and rear of its roughly curved portion in the image reading apparatus, and a moving speed of the scanning member of about 1 And a guide member driving means for moving the guide member in the same direction as the moving direction of the scanning body at a speed of / 2.
本考案による画像読取装置は、フレキシブルプリント基
板の湾曲部の内側に、フレキシブルプリント基板を張架
して配設されたガイド部材の外周によって、フレキシブ
ルプリント基板の湾曲部の占める高さh0がh2≦h0＜Ｈの
範囲を保つようにフレキシブルプリント基板が保持さ
れ、かつ、ガイド部材駆動手段によって、走査体が往復
移動する際、この走査体の移動速度の約1/2の速度でガ
イド部材が走査体の移動方向と同じ方向に移動されるこ
とにより、フレキシブルプリント基板の湾曲部が常時所
定の曲率を保つように緊張され、このフレキシブルプリ
ント基板とコンタクトガラスの内面との間に一定の間隙
が確保される。In the image reading device according to the present invention, the height h 0 occupied by the curved portion of the flexible printed circuit board is h 0 due to the outer circumference of the guide member that is disposed by stretching the flexible printed circuit board inside the curved portion of the flexible printed circuit board. The flexible printed circuit board is held so as to maintain the range of 2 ≤ h 0 <H, and when the scanning member reciprocates by the guide member driving means, the guide is guided at a speed of about 1/2 of the moving speed of the scanning member. By moving the member in the same direction as the moving direction of the scanning body, the curved portion of the flexible printed circuit board is tensioned so as to always maintain a predetermined curvature, and a constant distance is provided between the flexible printed circuit board and the inner surface of the contact glass. A gap is secured.
以下、本考案の一実施例を図を基づいて詳細い説明す
る。Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
本考案による画像読取装置は、ガイド部材としてのケー
ブルガイド部材10と、ガイド部材駆動手段20とを具備し
ている。The image reading apparatus according to the present invention comprises a cable guide member 10 as a guide member and a guide member driving means 20.
ケーブルガイド部材10は、後述するガイド部材駆動手段
20の移動体21に支軸22によって回転自在に支持される
（第２図参照）。このとき、ケーブルガイド部材10は、
第１図に示すように、フレキシブルプリント基板として
のケーブル７の湾曲部Ａの内側に、このケーブル７を張
架、すなわちケーブル７のたるみを吸収してケーブル７
を緊張させるようにして配設される。また、図１に示す
ように、このケーブルガイド部材10の直径は、ケーブル
７がその湾曲部Ａの前後において平行になるような直径
に設定される。これによって、ケーブル７の最小曲率以
上の湾曲が阻止されてケーブル７の折れや破損が防止さ
れるとともに、ケーブル７とコンタクトガラス２の内面
2aとの間に所定の間隙ｌを確保することができる。The cable guide member 10 is a guide member driving means described later.
A movable body 21 of 20 is rotatably supported by a support shaft 22 (see FIG. 2). At this time, the cable guide member 10
As shown in FIG. 1, the cable 7 is stretched inside the curved portion A of the cable 7 as a flexible printed board, that is, the slack of the cable 7 is absorbed and the cable 7 is absorbed.
Are arranged so as to make them tense. Further, as shown in FIG. 1, the diameter of the cable guide member 10 is set so that the cable 7 is parallel to the front and rear of the curved portion A thereof. This prevents the cable 7 from being bent more than the minimum curvature to prevent the cable 7 from being broken or damaged, and also to prevent the cable 7 and the inner surface of the contact glass 2 from being broken.
It is possible to secure a predetermined gap 1 with 2a.
一方、ガイド部材駆動手段20は、第２図に示すように、
移動体21、支軸22、ガイドローラ23、可動プーリ24、ガ
イドプーリ25、駆動プーリ26および駆動ワイヤ27などで
構成されている。本実施例におけるガイド部材駆動手段
20は、走査体４の往復駆動手段をも兼ねており、この走
査体４のガイドローラ28をガイドするガイドレール29に
よって移動体22のガイドローラ23がガイドされるように
構成されている。このガイド部材駆動手段20の詳細な構
成および動作は、周知の複写機における画像走査光学系
の駆動手段と略同様である。すなわち、このガイド部材
駆動手段20は、第２図において、図示しない駆動源によ
り駆動プーリ26が正逆回転駆動されることにより、走査
体４がコンタクトガラス２の内面2aに沿って往復移動さ
れる。このときの走査体４の移動距離は走査される原稿
のサイズ等に応じて予め設定される。一方、この走査体
４の移動速度をｖ、移動距離をｘとした場合、この走査
体４の移動に伴って、走査体４の移動方向と同じ方向に
向けて移動体21が、可動プーリ24の作用により約1/2vの
速度で距離1/2xだけ移動される（第３図参照）。したが
って、この移動体21に支軸22を介して回転自在に支持さ
れたケーブルガイド部材10は、走査体４の移動速度ｖの
約1/2の速度で走査体４の移動方向と同じ方向に移動さ
れる。これによって、このケーブルガイド部材10に張架
されたケーブル７が、その湾曲部Ａの曲率を常時一定に
保って移動されて、このケーブル７のコンタクトガラス
２の内面2aとの間に一定の間隙ｌが確保される（第１図
参照）。On the other hand, the guide member driving means 20, as shown in FIG.
It comprises a moving body 21, a support shaft 22, a guide roller 23, a movable pulley 24, a guide pulley 25, a drive pulley 26, a drive wire 27, and the like. Guide member driving means in this embodiment
Reference numeral 20 also serves as a reciprocating drive means for the scanning body 4, and is configured so that the guide roller 23 of the moving body 22 is guided by a guide rail 29 that guides the guide roller 28 of the scanning body 4. The detailed structure and operation of the guide member driving means 20 are substantially the same as the driving means of the image scanning optical system in a known copying machine. That is, in this guide member driving means 20, the scanning body 4 is reciprocally moved along the inner surface 2a of the contact glass 2 by driving the driving pulley 26 in the forward and reverse directions by a driving source (not shown) in FIG. . The moving distance of the scanning body 4 at this time is preset according to the size of the document to be scanned or the like. On the other hand, when the moving speed of the scanning body 4 is v and the moving distance is x, the moving body 21 moves in the same direction as the moving direction of the scanning body 4 as the scanning body 4 moves. Is moved by a distance of 1 / 2x at a speed of about 1 / 2v (see Fig. 3). Therefore, the cable guide member 10, which is rotatably supported by the moving body 21 via the support shaft 22, moves in the same direction as the moving direction of the scanning body 4 at a speed of about 1/2 of the moving speed v of the scanning body 4. Be moved. As a result, the cable 7 stretched around the cable guide member 10 is moved with the curvature of the curved portion A always kept constant, and a constant gap is formed between the cable 7 and the inner surface 2a of the contact glass 2. 1 is secured (see FIG. 1).
なお、ケーブルガイド部材10は、第２図に示すように、
その軸方向の幅がケーブル７の幅よりも大きく形成され
ることが望ましく、また、その両端部にケーブル７の脱
落を阻止するためのフランジを形成することが望まし
い。The cable guide member 10 is, as shown in FIG.
The width in the axial direction is preferably formed to be larger than the width of the cable 7, and it is also preferable to form flanges at both ends thereof to prevent the cable 7 from falling off.
上述のように、本考案による画像読取装置は、コンタク
トガラス内面とフレキシブルプリント基板との接触を防
止することができるので、コンタクトガラス内面の汚染
が防止されて読取画像の品質低下が解消され、かつ、走
査体の走行が安定するとともに、フレキシブルプリント
基板の折れ込みによる寿命低下を解消される。As described above, the image reading device according to the present invention can prevent contact between the inner surface of the contact glass and the flexible printed circuit board, so that the inner surface of the contact glass is prevented from being contaminated and the deterioration of the quality of the read image is eliminated. Thus, the traveling of the scanning body is stabilized, and the shortening of the life due to the folding of the flexible printed circuit board is eliminated.
【図面の簡単な説明】 第１図は本考案の実施例の概略断面図、第２図は上記実
施例におけるガイド部材駆動手段の斜視図、第３図は上
記実施例におけるケーブルガイド部材の動作説明図、第
４図は従来の画像読取装置の概略断面図、第５図は上記
従来の画像読取装置におけるケーブルの動作説明図であ
る。 １……装置本体、２……コンタクトガラス、2a……コン
タクトガラスの内面、３……走査部、４……走査体、５
……電源部、６……信号処理部、７……ケーブル、10…
…ケーブルガイド部材、20……ガイド部材駆動手段、Ａ
……ケーブルの湾曲部、Ｈ……走査部の高さ、h0,h1,h2
……湾曲部の占める高さ、ｖ……走査体の移動速度。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of a guide member driving means in the above embodiment, and FIG. 3 is an operation of a cable guide member in the above embodiment. Explanatory drawing, FIG. 4 is a schematic sectional view of a conventional image reading apparatus, and FIG. 5 is an operation explanatory view of a cable in the conventional image reading apparatus. 1 ... Device body, 2 ... Contact glass, 2a ... Inner surface of contact glass, 3 ... Scan unit, 4 ... Scan body, 5
...... Power supply section, 6 ...... Signal processing section, 7 ...... Cable, 10 ...
… Cable guide member, 20 …… Guide member driving means, A
...... Cable part of cable, H ... Height of scanning part, h0, h1, h2
…… Height occupied by the curved part, v …… Movement speed of the scanning object.
Claims (1)
の走査部に配置され、かつ上記原稿のサイズに応じて上
記コンタクトガラスに沿って往復移動する走査体と、こ
の走査体と電源部および信号処理部とを電気的に接続す
るＵ字状に湾曲されて配設されたフレキシブルプリント
基板とを有する画像読取装置において、 上記フレキシブルプリント基板が、その該湾曲部の前後
において略平行になるような直径を有するガイド部材
と、 上記走査体の移動速度の約1/2の速度で上記走査体の移
動方向と同じ方向に上記ガイド部材を移動させるガイド
部材駆動手段と を具備してなる画像読取装置。1. A scanning body which is arranged in a scanning section inside a contact glass on which an original is placed, and which reciprocates along the contact glass according to the size of the original, and the scanning body and a power source section. And an image reading apparatus having a U-shaped curved flexible printed circuit board electrically connected to the signal processing section, wherein the flexible printed circuit board is substantially parallel to the front and rear of the curved section. An image comprising a guide member having such a diameter, and a guide member driving means for moving the guide member in the same direction as the moving direction of the scanning body at a speed of about 1/2 of the moving speed of the scanning body. Reader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988133160U JPH075719Y2 (en) | 1988-10-12 | 1988-10-12 | Image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988133160U JPH075719Y2 (en) | 1988-10-12 | 1988-10-12 | Image reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0253663U JPH0253663U (en) | 1990-04-18 |
| JPH075719Y2 true JPH075719Y2 (en) | 1995-02-08 |
Family
ID=31390779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988133160U Expired - Lifetime JPH075719Y2 (en) | 1988-10-12 | 1988-10-12 | Image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075719Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230077585A1 (en) * | 2021-09-15 | 2023-03-16 | TE Connectivity Services Gmbh | Method and apparatus for flattening and imaging a printed thin film product |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4810207B2 (en) * | 2005-12-01 | 2011-11-09 | 株式会社リコー | Image reading apparatus and image forming apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5060235A (en) * | 1973-09-27 | 1975-05-24 | ||
| JPS5734509U (en) * | 1980-07-31 | 1982-02-23 | ||
| JPS5966240U (en) * | 1982-10-25 | 1984-05-02 | キヤノン株式会社 | Original scanning device |
-
1988
- 1988-10-12 JP JP1988133160U patent/JPH075719Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230077585A1 (en) * | 2021-09-15 | 2023-03-16 | TE Connectivity Services Gmbh | Method and apparatus for flattening and imaging a printed thin film product |
| US11867639B2 (en) * | 2021-09-15 | 2024-01-09 | Te Connectivity Solutions Gmbh | Method and apparatus for flattening and imaging a printed thin film product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0253663U (en) | 1990-04-18 |
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