JPH0289466A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPH0289466A
JPH0289466A JP63241606A JP24160688A JPH0289466A JP H0289466 A JPH0289466 A JP H0289466A JP 63241606 A JP63241606 A JP 63241606A JP 24160688 A JP24160688 A JP 24160688A JP H0289466 A JPH0289466 A JP H0289466A
Authority
JP
Japan
Prior art keywords
regulating
optical head
head
same direction
carriage
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
JP63241606A
Other languages
Japanese (ja)
Inventor
Shinji Hattori
信次 服部
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP63241606A priority Critical patent/JPH0289466A/en
Publication of JPH0289466A publication Critical patent/JPH0289466A/en
Pending legal-status Critical Current

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  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)

Abstract

PURPOSE:To avoid optical backlash of head at the scanning by providing a distance regulating member between a sensor and an original face as a member regulating the movement of an image forming system in its scanning direction and a member regulating an optical head so as not to be moved in the same direction as the arrangement of sensors separately and providing a mechanism pressing a member sliding with respect to the regulating member in the same direction as the arrangement of sensors. CONSTITUTION:A slide chip 5 is fixed to both ends of an optical head the chip 5 is skidded on a slide rail 3 to keep the distance between the head and the original face constant. A carriage 2 fixed to the lower part of the optical head 1 is fitted turnably at both ends of a plate spring 9 fixed to the carriage 2 and a roll 10 is freely turnable to a shaft implanted to the carriage 2. Thus, the slide rail 4 is clipped between rolls 10 and 8 by a force of the plate spring. The guide member is made of an Al extruded member and the rails 3, 4 are incorporated, then the accuracy of position information is improved.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は画像読み取り装置の構成に関する。[Detailed description of the invention] "Industrial application field" The present invention relates to the configuration of an image reading device.

1従来の技術l コンピュータに文字や写真などの原稿を入力する原稿読
み取り装置の代表的なものにフラットベツド型イメージ
スキャナと呼ばれるものがある。
1. Prior Art 1 A typical document reading device for inputting documents such as text and photographs into a computer is called a flatbed image scanner.

これは一般に原稿の1ライン分を読み取る光学ヘッドと
、その光学ヘッドを読み取りラインと直角方向に移動さ
せていく機構を持ち、光学ヘッドは原稿にそって移動し
ながら原稿全体を読み取っていく。第4図にフラットベ
ツド型イメージスキャすの基本構成の一例の斜視図を示
す。第5図には光学ヘッドの一例を示す。第5図におい
てガラス台に置かれた原稿11は照明装置12−G、1
2−B、12−Rにより照明され、その像は結像系15
によりセンサ16に結像される。ここでは断面を図示し
ているが、実際には、照明装置12−G、12−B、1
2−Rは紙面の手前奥行き方向に長さを持ち、センサ1
6もまた、同方向に一次元的に配列されている。すなわ
ち第4図の構成例によるスキャナでは光学ヘッド1は第
5図のような構成であり、前記光学ヘッド1をセンサの
読み取りラインと直角方向に移動させて行くことにより
、原稿の像を読み取って行くわけである。
This generally has an optical head that reads one line of a document and a mechanism that moves the optical head in a direction perpendicular to the reading line, and the optical head reads the entire document while moving along the document. FIG. 4 shows a perspective view of an example of the basic configuration of a flatbed type image scanner. FIG. 5 shows an example of an optical head. In FIG. 5, the original 11 placed on the glass stand is illuminated by illumination devices 12-G and 1.
2-B and 12-R, and the image is captured by the imaging system 15.
An image is formed on the sensor 16 by. Although a cross section is shown here, in reality, the lighting devices 12-G, 12-B, 1
2-R has a length in the front depth direction of the page, and sensor 1
6 are also arranged one-dimensionally in the same direction. That is, in the scanner according to the configuration example shown in FIG. 4, the optical head 1 has a configuration as shown in FIG. That's why I'm going.

第6図はフラットベツド形イメージスキャナの従来の構
成例を示す図である。この例では、第5図に示したよう
な構成の光学ヘッドを、原稿面に沿って移動させていく
ガイドとして、円柱状の金属性ガイドシャフト19を用
い、このガイドシャフト19の反対側には、回転を規制
する平面状のガイドレール18が配置されている。した
がって光学へラド17が原稿面を走査する際に、上記ガ
イドシャフト19で原稿面と光学へラド17との距離と
原稿面に水平な方向を、ともに規制し、光学へラド17
のもう一方の側は、ガイドレール18で原稿面との距離
を規制する構造になっている。
FIG. 6 is a diagram showing an example of a conventional configuration of a flatbed type image scanner. In this example, a cylindrical metal guide shaft 19 is used as a guide for moving the optical head configured as shown in FIG. 5 along the document surface. A planar guide rail 18 is arranged to restrict rotation. Therefore, when the optical held 17 scans the document surface, the guide shaft 19 regulates both the distance between the document surface and the optical held 17 and the direction horizontal to the document surface.
The other side has a structure in which a guide rail 18 regulates the distance from the document surface.

[発明が解決しようとする課題及び目的]ところが、従
来のスキャナの構成では光学へラド17の移動方向を規
制するガイドシャフト19と、このガイドシャフト19
と摺動するための円筒状軸受け20との間に、部品の公
差や熱膨張を吸収するための隙間を設けておかなければ
ならない。
[Problems and objects to be solved by the invention] However, in the configuration of a conventional scanner, there is a guide shaft 19 that regulates the moving direction of the optical radar 17, and a guide shaft 19 that regulates the moving direction of the optical radar 17.
A gap must be provided between the cylindrical bearing 20 and the sliding cylindrical bearing 20 to absorb component tolerances and thermal expansion.

したがって、光学ヘッド17を走査する際に、光学ヘッ
ドがガタつき、そのために読み取り画像にぼけが生じて
しまうといった不具合が生じていた。
Therefore, when the optical head 17 scans, the optical head shakes, causing a problem that the read image becomes blurred.

上記の不具合点に鑑み、本発明では光学ヘッドを走査す
る際に振動を生じさせない構造を、安価な構成で実現す
ることを目的とした。
In view of the above drawbacks, the present invention aims to realize a structure that does not generate vibrations when scanning an optical head with an inexpensive configuration.

[課題を解決するための手段] その手段として、本発明では結像系の走査の方向を規制
するためのガイド部材として、センサと原稿面との距離
を規制する部材と、センサの配列と同一な方向を規制す
る部材とを別に持ち、かつ化センサの配列と同一方向を
規制する部材に対し摺動する部材を押し付ける機構を有
することを特徴とした。
[Means for Solving the Problems] As a means for solving the problem, in the present invention, as a guide member for regulating the scanning direction of the imaging system, a member for regulating the distance between the sensor and the document surface and a member arranged in the same manner as the sensor arrangement are used. The present invention is characterized in that it has a separate member that regulates the same direction as the sensor array, and has a mechanism that presses the sliding member against the member that regulates the same direction as the arrangement of the sensors.

また上記の構成で原稿面との距離を規制する部分と、セ
ンサの配列と同一方向を規制する部分とを一体部材で構
成し、さらに結像系の走査の方向を規制するためのガイ
ド部材をアルミニウムなどの押し出し材で構成すること
を特徴とする。
Furthermore, in the above configuration, the part that regulates the distance to the document surface and the part that regulates the same direction as the sensor arrangement are constructed as an integral member, and a guide member is further provided to regulate the scanning direction of the imaging system. It is characterized by being constructed from extruded material such as aluminum.

[実施例] 第1図に本発明の一実施例を示す。この例では、光学ヘ
ッド1の両端に摺動チップ5が固定され、この摺動チッ
プ5が摺動レールA3上を摺動することによりヘッドと
原稿面との距離が一定に保たれる。また光学ヘッド1の
下部に固定したキャリッジ2は、第2図に示すような構
成で、コロB8はキャリッジ2に固定された板バネ9の
両端に回転可能に取り付け、コロAIOはキャリッジ2
に植設したシャフトに回転可能に取り付けられている。
[Example] FIG. 1 shows an example of the present invention. In this example, sliding chips 5 are fixed to both ends of the optical head 1, and the distance between the head and the document surface is kept constant by sliding on the sliding rail A3. Further, the carriage 2 fixed to the lower part of the optical head 1 has a configuration as shown in FIG.
It is rotatably attached to a shaft planted in the

したがって摺動レールB4は板バネの力によりコロAI
OとコロB8との間に挟み込まれる。
Therefore, the sliding rail B4 moves to the roller AI due to the force of the leaf spring.
It is sandwiched between O and roller B8.

この様な構成により光学ヘッド1は図中の矢印の方向に
ガタ付きを生じることなく摺動することが出来る。
With such a configuration, the optical head 1 can slide in the direction of the arrow in the figure without causing rattling.

第3図には本発明の請求範囲の第2の実施例を示す。こ
の例では、上記の摺動レールA部と摺動レール8部とを
一体化することにより、レール間の位置精度を向上させ
ことができる。
FIG. 3 shows a second embodiment of the invention. In this example, by integrating the sliding rail section A and the sliding rail section 8, the positional accuracy between the rails can be improved.

また、第1図、第3図に示した構成例では、光学ヘッド
1の摺動方向にたいして、摺動レールの形状が同一断面
で構成できるため、例えばアルミニウムの押し出し材な
どで構成することによって、より位置精度が向上するも
のである。
In addition, in the configuration example shown in FIGS. 1 and 3, since the shape of the slide rail can be configured to have the same cross section in the sliding direction of the optical head 1, it is possible to configure the slide rail with the same cross section in the sliding direction of the optical head 1. This further improves positional accuracy.

[発明の効果] 本発明を用いれば、光学ヘッドを移動させて原稿を読み
とるタイプの画像読み取り装置において、光学ヘッドに
全くがたを生じさせることなく光学ヘッドを摺動させる
ことができる。また、従来の技術に比べ、形状、構成と
もに単純となるため、摺動レール自体を本体フレームと
兼ねることができ、コストを安く抑えるとともに、精度
を向上させることができる。
[Effects of the Invention] According to the present invention, in an image reading device that reads a document by moving an optical head, it is possible to slide the optical head without causing any play in the optical head. In addition, since the shape and structure are simpler than conventional techniques, the sliding rail itself can also serve as the main body frame, reducing costs and improving accuracy.

さらに実際例では、第3図に示した構成で、押し出し成
形用アルミニウムA6063を用いたが、摺動チップと
接する摺動面は、押し出し方向と摺動方向が一致するた
め、前記の構成による摺動チップとの組合せにより、実
用上非常に良好な摺動及び摩耗特性が得られることが確
認されている。
Furthermore, in the actual example, aluminum A6063 for extrusion molding was used in the configuration shown in FIG. It has been confirmed that in combination with a dynamic tip, very good sliding and wear characteristics can be obtained in practice.

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

第1図は本発明の画像読み取り装置の一実施例を示す主
要断面図。 第2図は第1図の実施例の、部分説明図。 第3図は本発明の他の具体例を示す図。 第4図はフラットベツド型イメージスキャナの構成例の
斜視図。 第5図は光学ヘッドの構成例を示す図。 第6図は従来の構成例を示す断面図。 1:光学へ・2ド 5:摺動チップ 第2図 8:コロA 9:板バネ 10:コロB 以上 出願人 セイコーエプソン株式会社 代理人 弁理士 鈴木喜三部他1名 7:児喀ヘッド 第3図 第4図 7:と喀へ・ラド 第5図
FIG. 1 is a main sectional view showing an embodiment of an image reading device of the present invention. FIG. 2 is a partial explanatory diagram of the embodiment shown in FIG. FIG. 3 is a diagram showing another specific example of the present invention. FIG. 4 is a perspective view of a configuration example of a flatbed type image scanner. FIG. 5 is a diagram showing an example of the configuration of an optical head. FIG. 6 is a sectional view showing an example of a conventional configuration. 1: To optics・2 do 5: Sliding chip 2 Figure 8: Roller A 9: Leaf spring 10: Roller B Applicant Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki and 1 other person 7: Koko head Figure 3 Figure 4 Figure 7: Tokohe Rad Figure 5

Claims (3)

【特許請求の範囲】[Claims] (1)原稿面の像を読み取るための光学的一次元センサ
と、結像系の一部または全部を当センサの配列に対し直
角方向に走査する機構を備えた画像読み取り装置に於て
、結像系の走査の方向を規制するためのガイド部材とし
て、センサと原稿面との距離を規制する部材と、センサ
の配列と同一な方向を規制する部材とを別に持ち、かつ
当センサの配列と同一方向を規制する部材に対し摺動す
る部材を押し付ける機構を有することを特徴とする画像
読み取り装置。
(1) In an image reading device equipped with an optical one-dimensional sensor for reading an image on the document surface and a mechanism that scans part or all of the imaging system in a direction perpendicular to the array of the sensor, As a guide member for regulating the scanning direction of the image system, a member for regulating the distance between the sensor and the document surface and a member for regulating the same direction as the sensor arrangement are separately provided, and An image reading device characterized by having a mechanism for pressing a sliding member against a member regulating the same direction.
(2)上記請求項1で、原稿面との距離を規制する部分
と、センサの配列と同一方向を規制する部分とを一体部
材で構成することを特徴とする画像読み取り装置。
(2) The image reading device according to claim 1, characterized in that the part that regulates the distance to the document surface and the part that regulates the same direction as the arrangement of the sensors are constructed as an integral member.
(3)上記請求項1で、結像系の走査の方向を規制する
ためのガイド部材をアルミニウムなどの押し出し材で構
成したことを特徴とする画像読み取り装置。
(3) The image reading device according to claim 1, wherein the guide member for regulating the scanning direction of the imaging system is made of an extruded material such as aluminum.
JP63241606A 1988-09-27 1988-09-27 Picture reader Pending JPH0289466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63241606A JPH0289466A (en) 1988-09-27 1988-09-27 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63241606A JPH0289466A (en) 1988-09-27 1988-09-27 Picture reader

Publications (1)

Publication Number Publication Date
JPH0289466A true JPH0289466A (en) 1990-03-29

Family

ID=17076819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63241606A Pending JPH0289466A (en) 1988-09-27 1988-09-27 Picture reader

Country Status (1)

Country Link
JP (1) JPH0289466A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011164574A (en) * 2010-01-18 2011-08-25 Murata Machinery Ltd Image scanning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011164574A (en) * 2010-01-18 2011-08-25 Murata Machinery Ltd Image scanning device

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