JPS6372259A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS6372259A
JPS6372259A JP61216673A JP21667386A JPS6372259A JP S6372259 A JPS6372259 A JP S6372259A JP 61216673 A JP61216673 A JP 61216673A JP 21667386 A JP21667386 A JP 21667386A JP S6372259 A JPS6372259 A JP S6372259A
Authority
JP
Japan
Prior art keywords
mount
light source
sensor
line
light sources
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
JP61216673A
Other languages
Japanese (ja)
Inventor
Mariko Sasaki
佐々木 真利子
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems 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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP61216673A priority Critical patent/JPS6372259A/en
Publication of JPS6372259A publication Critical patent/JPS6372259A/en
Pending legal-status Critical Current

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  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To efficiently mass-produce highly accurate devices by applying alignment between an optical axis of a sensor system and optical axes of two linear light sources at once depending on the position adjustment by a sensor mount and a light source mount. CONSTITUTION:A linear image sensor 3 is mounted onto an upper part of a sensor mount 4a and non-magnification image forming lens system 2 is mounted to the lower center. A box form light source accommodation section 41 is located at the lower part of the sensor mount 4a and the original arrangement face A is regulated by the lower face. The light source mount 4b is inserted in the light source accommodation section 41 in the sensor mount 4a and set while being retained by plate springs 6, 7 in upper and right directions. Then the mount 4b is changed slightly in the horizontal direction by a screw 9 and changed vertically by a screw 8. Thus, a cross line is read and ease of coincidence is attained to the line.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、ファクシミリ装置や複写機などに用いられ
る画像読み取り装置に関し、特に、イメージセンサと結
像レンズ系それに照明光源を含んだユニット構造部分の
改良に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an image reading device used in a facsimile machine, a copying machine, etc., and particularly to an improvement in a unit structure including an image sensor, an imaging lens system, and an illumination light source. Regarding.

従来の技術 この種の画像読み取り装置においては、イメージセンサ
と結像レンズ系と照明光源とが所定の配置関係でユニッ
ト化されているのが普通である。
2. Description of the Related Art In this type of image reading device, an image sensor, an imaging lens system, and an illumination light source are usually integrated into a unit in a predetermined arrangement relationship.

最近の技術動向として、このユニットに対する小形化の
強い要請がある。そのため、螢光ランプに替ってLED
 (発光ダイオード)アレイによる線状光源が使用され
、センサには密着型イメージセンサが使用され、これに
等倍の結像レンズ系が組み合わされる、といった構成の
装置が多くなってきた。また、読み取り速度の向上も重
要な技術課題である。
As a recent technological trend, there is a strong demand for miniaturization of this unit. Therefore, instead of fluorescent lamps, LED
Increasingly, devices have a configuration in which a linear light source (light emitting diode) array is used, a contact image sensor is used as a sensor, and a 1-magnification imaging lens system is combined with this. Improving reading speed is also an important technical issue.

この種の装置の最近の代表的な構造例を第3図に示して
いる。
A recent typical structural example of this type of device is shown in FIG.

マウント4は紙面の垂直方向に細長い形状であり、その
長手方向が読み取りラインの方向である。
The mount 4 has an elongated shape in the direction perpendicular to the plane of the paper, and its longitudinal direction is the direction of the reading line.

マウント4の下部は左右対称な2.又に分かれておシ、
その下面が原稿配置面Aであり、との而Aに沿って左右
方向に原稿が移動する。原稿配置面Aにおけるマウント
4の中心線上が読み取りラインBである。
The lower part of mount 4 is symmetrical 2. Divided into two parts,
The lower surface thereof is a document placement surface A, along which the document moves in the left-right direction. A reading line B is on the center line of the mount 4 on the document placement surface A.

マウント4の中心部分に等倍結像レンズ系2が取り付け
られ、上面に1次元イメージセンサ3が取り付けられて
いる。この結像レンズ系2とイメージセンサ3により、
原稿配置面Aにおける読み取カラインB上の1次元イメ
ージが検出(光電変換)される、 原稿配置面Aを照明するために、LEDアレイからなる
2本の線状光源1が、マウント4の2又に分かれた部分
の内側にそれぞれ取り付けられている。両線状光源1の
光軸面が読み取りラインBに交わるように、それぞれが
位置決めされて固着されている。
A 1-magnification imaging lens system 2 is attached to the center of the mount 4, and a one-dimensional image sensor 3 is attached to the upper surface. With this imaging lens system 2 and image sensor 3,
A one-dimensional image on the reading line B on the document placement surface A is detected (photoelectrically converted). In order to illuminate the document placement surface A, two linear light sources 1 consisting of LED arrays are installed at two orifices of the mount 4. Each is attached to the inside of the divided part. Both linear light sources 1 are positioned and fixed so that their optical axis planes intersect with the reading line B.

発明が解決しようとする問題点 LEDアレイの線状光源1の光量は螢光ランプに比べる
とはるかに少ない。そのため第3図のように2本の光源
1を必要とする。しかも単に2本用いたというだけでは
充分でなく、線状光源1の光軸面(ピーク光量を示す照
射方向)を正確に読み取りラインBに交わらせる必要が
ある。線状光源1の指向角は狭いので、照明方向を正確
に合わせないと、読み取りラインB上の照度が不足する
Problems to be Solved by the Invention The light amount of the linear light source 1 of the LED array is much smaller than that of a fluorescent lamp. Therefore, two light sources 1 are required as shown in FIG. Moreover, it is not enough to simply use two light sources; it is also necessary to make the optical axis plane of the linear light source 1 (the irradiation direction indicating the peak light amount) intersect with the reading line B accurately. Since the directivity angle of the linear light source 1 is narrow, the illuminance on the reading line B will be insufficient unless the direction of illumination is adjusted accurately.

読み取りラインBとは、センサ系(イメージセンサ3と
レンズ系2)の光軸面と原稿配置面Aとの交差ラインで
ある。このラインB上にさらに2つの光源1の光軸面を
交わらせる必要がある。これにはセンサ系と2つの光源
との3〜4部品の相互の位置合わせを行なう必要がある
The reading line B is a line of intersection between the optical axis plane of the sensor system (image sensor 3 and lens system 2) and the document placement surface A. It is necessary to intersect the optical axis planes of the two light sources 1 on this line B. This requires mutual alignment of three to four components, the sensor system and the two light sources.

この位置合わせを高精度に行なうためには、マウント4
や各部品の寸法精度を高くし、各部品を基準位置に高精
度に取υ付ける必要がある。しかし、イメージセンサや
LEDアレイの寸法バラツキやソリとか歪の発生が現実
に避けられないので、最終的な位置合わせの精度はあま
り良くならない。
In order to perform this alignment with high precision, mount 4
It is necessary to increase the dimensional accuracy of each part and to mount each part in the reference position with high precision. However, since dimensional variations, warpage, and distortion of the image sensor and the LED array are unavoidable, the accuracy of the final alignment is not very good.

さらに精度を上げるためには、LEDアレイの線状光源
1をマウント4に取り付ける際に、1本づつ方向を測定
しながら位置調整を行なわなければならない。この作業
は非常に面倒なもので、生産効率を著しく低下させる。
In order to further increase the accuracy, when attaching the linear light sources 1 of the LED array to the mount 4, the positions must be adjusted while measuring the direction of each LED array. This work is extremely troublesome and significantly reduces production efficiency.

この発明は上述した従来の問題点に鑑みなされたもので
、その目的は、2本の線状光源の光軸方向をセ/す系に
高精度に合わせることが簡単な位置調整作業で短時間に
行なえるようにした画像読み取り装置を提供することに
ある。
This invention was made in view of the above-mentioned conventional problems, and its purpose is to align the optical axes of two linear light sources with a center/seam system with high precision through simple position adjustment work and in a short time. An object of the present invention is to provide an image reading device that can perform the following operations.

問題点を解決するための手段 そこで、この発明ではユニットのマウントとセンサマウ
ントと光源マウントとの2つに分割構成した。センサマ
ウントには1次元イメージセ/すと結像レンズ系とを取
り付け、原稿配置面における読み取りライン上の1次元
イメージを検出する配置とする。光源マウントには2本
の線状光源をほぼ平行に取り付け、両光源の光軸面がほ
ぼ所定距離前方で交差する配置とする。
Means for Solving the Problems Therefore, in the present invention, the mount is divided into two parts: a unit mount, a sensor mount, and a light source mount. A one-dimensional image sensor and an imaging lens system are attached to the sensor mount, and arranged to detect a one-dimensional image on the reading line on the document placement surface. Two linear light sources are attached to the light source mount substantially in parallel, and the optical axis planes of both light sources are arranged to intersect approximately a predetermined distance ahead.

そして、上記読み取りラインと上記2つの光軸面の交差
ラインとがほぼ一致する配置でセンサマウントと光源マ
ウントとを組み合わせて一体化するとともに、上記読み
取りラインと上記交差ラインとを正確に一致させるため
に両マウノトの相対位置を変化させることのできる位置
調整手段を含んだマウント結合手段を設けた。
Then, the sensor mount and the light source mount are combined and integrated in a position where the reading line and the intersection line of the two optical axis planes almost match, and the reading line and the intersection line are made to accurately match. Mount coupling means including position adjustment means capable of changing the relative positions of both mounts is provided.

作用 上記光源マウントに対する上記2本の線状光源の位置精
度が粗くても、両光源の光軸面は適当な位置で交差し、
交差ラインができる。上記位置調整手段で上記センサマ
ウントに対して上記光源マウントの位置を変化させると
、上記交差ライ/が上記読み取シラインに対して動くこ
とになる。この一度の位置調整で両ライ/を容易に一致
させることができる。
Effect Even if the positional accuracy of the two linear light sources with respect to the light source mount is poor, the optical axis planes of both light sources intersect at appropriate positions,
A crossing line is created. When the position adjustment means changes the position of the light source mount with respect to the sensor mount, the cross line moves with respect to the reading line. With this one-time position adjustment, both lies can be easily matched.

実施例 第1図と第2図はこの発明の一実施例を示している。第
1図において、4aはセンサマウント、4bは光源マウ
ントで、それぞれ紙面直交方向に細長い形になっている
。第2図には光源マウント4b側のみを示している。
Embodiment FIGS. 1 and 2 show an embodiment of the present invention. In FIG. 1, 4a is a sensor mount, and 4b is a light source mount, each of which has an elongated shape in a direction perpendicular to the plane of the paper. FIG. 2 shows only the light source mount 4b side.

センサマウント4aの上部には1次元イメージセンサ3
が取り付けられ、その下側中心には等倍結像レンズ系2
が取り付けられている。センサマウン)4aの下部には
箱形の光源収容部41があり、その下面によって原稿配
置図Aが規定されている。センサ系の光軸面が面Aに交
わったところが読み取りラインBで、このラインB上の
1次元イメージがレンズ系2とセンサ3によって検出さ
れる。
A one-dimensional image sensor 3 is mounted on the top of the sensor mount 4a.
is attached, and a 1-magnification imaging lens system 2 is installed at the center of its lower side.
is installed. There is a box-shaped light source accommodating section 41 at the bottom of the sensor mount 4a, and the document layout map A is defined by the bottom surface of the box-shaped light source accommodating section 41. The point where the optical axis plane of the sensor system intersects plane A is reading line B, and a one-dimensional image on this line B is detected by lens system 2 and sensor 3.

光源マウント4bの外形寸法は光源収容部41の内形寸
法よりある程度小さくなっている。光源マウント4bの
下面側は2又に分かれており、その内側の2つの傾斜1
1ffi42,42にそれぞれLEDアレイ線状光源1
,1がほぼ平行に取り付けられている。また光源マウン
ト4bの上面部分には、センサ系の光路用の細長い窓4
3が形成されている。
The external dimensions of the light source mount 4b are smaller than the internal dimensions of the light source accommodating portion 41 to some extent. The lower surface side of the light source mount 4b is divided into two parts, and the two inner slopes 1
1ffi 42, 42 each have an LED array linear light source 1
, 1 are attached almost parallel to each other. Also, on the upper surface of the light source mount 4b, there is a long and narrow window 4 for the optical path of the sensor system.
3 is formed.

傾斜面42.42に取り付けられた光源1,1の光軸面
は斜下方に向って延び、マウント4bのほぼ中心の若干
下方にて互いに交差する。この交差ラインの位置は、光
源1,1の寸法精度や取り付は位置精度によってバラツ
クものの、ある領域内に収まる。
The optical axis planes of the light sources 1, 1 attached to the inclined surfaces 42, 42 extend obliquely downward and intersect with each other slightly below the approximate center of the mount 4b. Although the position of this intersection line varies depending on the dimensional accuracy and positional accuracy of the light sources 1, 1, it falls within a certain area.

光源マウント4bをセンサマウント4aの光源収容部4
1内にセットすると、巨視的には、両光源の交差ライン
は読み取りラインにほぼ一致する配置関係になる。
The light source mount 4b is attached to the light source housing part 4 of the sensor mount 4a.
When set within 1, macroscopically, the intersecting line of both light sources is placed in a positional relationship that almost coincides with the reading line.

光源収容部41には、光源マウント4bを上方へ押え付
ける板バネ6と、右方へ押え付ける板バネ7とが設けら
れている。また、収容部41の右方の壁部の結像レンズ
系2の両端の箇所にネジ孔が貫通形成されていて、そこ
にネジ9がセットされている。同様に、収容部41の上
方の壁部の結像レンズ系2の両端の箇所にネジ孔が貫通
形成されていて、そこにネジ8がセラl−aれている。
The light source accommodating portion 41 is provided with a leaf spring 6 that presses the light source mount 4b upward and a leaf spring 7 that presses it rightward. Furthermore, screw holes are formed through the right wall of the housing section 41 at both ends of the imaging lens system 2, and screws 9 are set therein. Similarly, screw holes are formed through the upper wall of the housing portion 41 at both ends of the imaging lens system 2, and screws 8 are inserted therein.

ネジ9の先端は光源マウント4bの右側面に当たり、こ
れを左方へ押す。ネジ8の先端はマウント4bの上面に
当たり、これを下方へ押す。なお、ネジ8がマウント4
aの中心より右側にあるように図示しているが、これは
図をわかりやすくするためで、中心にあるのが望ましい
The tip of the screw 9 hits the right side of the light source mount 4b and pushes it to the left. The tip of the screw 8 hits the top surface of the mount 4b and pushes it downward. Note that screw 8 is attached to mount 4.
Although it is shown to be on the right side of the center of a, this is to make the diagram easier to understand, and it is desirable that it be in the center.

ネジ9のねじ込み量によってマウン)4bを左右方向(
平行移動だけではない)に微少に変位させることができ
、ネジ8のねじ込み量によって上下方向に変位させるこ
とができる。この位置調整により、上記交差ラインを読
み取りラインに容易に一致させることができる。
Depending on the screwing amount of the screw 9, move the mount) 4b in the left and right direction (
It can be slightly displaced not only in parallel but also in the vertical direction depending on the screwing amount of the screw 8. This position adjustment allows the crossing line to be easily aligned with the reading line.

なお、LEDアレイの線状光源だけでなく、他の線状光
源を使用する場合にも本発明を適用することができる。
Note that the present invention can be applied not only to the linear light source of the LED array but also to the case where other linear light sources are used.

発明の効果 以上詳細に説明したように、この発明に係る画像読み取
り装置にあっては、センサマウントと光源マウントとの
位置調整により、センサ系の光軸と2つの線状光源の光
軸との位置合わせが一度に簡単に行なえるので、高精度
な装置を能率よく量産することができる。
Effects of the Invention As described in detail above, in the image reading device according to the present invention, the optical axis of the sensor system and the optical axes of the two linear light sources can be aligned by adjusting the positions of the sensor mount and the light source mount. Since positioning can be easily performed all at once, highly accurate devices can be mass-produced efficiently.

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

第1図は本発明の一実施例による画像読み取り装置の構
成図、第2図は同上実施例における光源マウント側の斜
視図、第3図は従来の画像読み取り装置の構成図である
。 1・・・線状光源、2・・・結像レンズ系、3・・・イ
メージセッサ、4a・・・センサマウント、4b・・・
光源マウント、6,7・・・板バネ、8,9・・・位置
調整用ネジ、A・・・原稿配置図、B・・・読み取りラ
イン。 代理人の氏名 弁理士 中 尾 軟 男 ほか1名第1
図 第3図
FIG. 1 is a configuration diagram of an image reading device according to an embodiment of the present invention, FIG. 2 is a perspective view of the light source mount side in the same embodiment, and FIG. 3 is a configuration diagram of a conventional image reading device. DESCRIPTION OF SYMBOLS 1... Linear light source, 2... Imaging lens system, 3... Image processor, 4a... Sensor mount, 4b...
Light source mount, 6, 7...plate spring, 8, 9...position adjustment screw, A...document placement diagram, B...reading line. Name of agent: Patent attorney Souo Nakao and 1 other person
Figure 3

Claims (1)

【特許請求の範囲】[Claims] 原稿配置面における読み取りライン上の1次元イメージ
を検出するように1次元イメージセンサと結像レンズ系
とを取り付けたセンサマウントと、2本の線状光源をほ
ぼ平行にし、両光源の光軸面がほぼ所定距離前方で交差
するように配置して取り付けた光源マウントと、上記読
み取りラインと上記2つの交軸面の交差ラインとがほぼ
一致する配置で上記センサマウントと上記光源マウント
とを組み合わせて一体化するとともに、上記読み取りラ
インと上記交差ラインとを正確に一致させるために上記
両マウントの相対位置を変化させることのできる位置調
整手段を含んだマウント結合手段とを備えた画像読み取
り装置。
A sensor mount is equipped with a one-dimensional image sensor and an imaging lens system so as to detect a one-dimensional image on the reading line on the document placement surface, and two linear light sources are made almost parallel and the optical axis plane of both light sources is a light source mount arranged and attached so that they intersect approximately a predetermined distance in front, and a sensor mount and a light source mount arranged so that the reading line and the intersecting line of the two intersecting axes substantially coincide with each other. An image reading device comprising: a mount coupling means that integrates the mounts and includes a position adjustment means capable of changing the relative positions of the two mounts in order to accurately match the reading line and the crossing line.
JP61216673A 1986-09-12 1986-09-12 Picture reader Pending JPS6372259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61216673A JPS6372259A (en) 1986-09-12 1986-09-12 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61216673A JPS6372259A (en) 1986-09-12 1986-09-12 Picture reader

Publications (1)

Publication Number Publication Date
JPS6372259A true JPS6372259A (en) 1988-04-01

Family

ID=16692130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61216673A Pending JPS6372259A (en) 1986-09-12 1986-09-12 Picture reader

Country Status (1)

Country Link
JP (1) JPS6372259A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775030A (en) * 1995-01-26 1998-07-07 Toyoda Gosei Co., Ltd. Sealing structure for an inner side of a door glass in a door of an automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775030A (en) * 1995-01-26 1998-07-07 Toyoda Gosei Co., Ltd. Sealing structure for an inner side of a door glass in a door of an automobile

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