JP2001245098A - Picture reader - Google Patents
Picture readerInfo
- Publication number
- JP2001245098A JP2001245098A JP2000053347A JP2000053347A JP2001245098A JP 2001245098 A JP2001245098 A JP 2001245098A JP 2000053347 A JP2000053347 A JP 2000053347A JP 2000053347 A JP2000053347 A JP 2000053347A JP 2001245098 A JP2001245098 A JP 2001245098A
- Authority
- JP
- Japan
- Prior art keywords
- ccd
- spacer
- image reading
- bracket
- electric substrate
- 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
Links
Landscapes
- Facsimile Heads (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、イメージスキャ
ナ、デジタル複写機等の画像読取装置に関する。[0001] 1. Field of the Invention [0002] The present invention relates to an image reading apparatus such as an image scanner and a digital copying machine.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】上述の
ような画像読取装置において、対象体を正確に光電変換
素子であるＣＣＤ（電荷結合素子）に結像させるため、
Ｘ軸、Ｙ軸、Ｚ軸の各方向に移動調整可能にすることが
知られている。一般的にＣＣＤは、電装基板上に保持さ
れているが、電装基板は強固なものではなく、反り、う
ねりが等の変形があり、平面度の良いものではない。ま
た、従来は読み取り密度も小さく、ＣＣＤ自体もそれほ
ど大きいものではなかったのであまり問題にはならなか
った。2. Description of the Related Art In the above-described image reading apparatus, in order to accurately form an image of an object on a CCD (charge coupled device) which is a photoelectric conversion element,
It is known that the movement can be adjusted in each of the X-axis, Y-axis, and Z-axis directions. In general, a CCD is held on an electric board, but the electric board is not strong, has deformation such as warpage and undulation, and is not good in flatness. Conventionally, the reading density was low, and the CCD itself was not so large, so there was no problem.
【０００３】ところが、読み取りの高密度化によりＣＣ
Ｄも素子数が増え、それにつれて素子のハウジング外形
も大きくなってきた。そのため、ＣＣＤを搭載する電装
基板も大きくなり、ＣＣＤの位置を調整可能にするブラ
ケットも大きくなったり、しかも取り付けスパンも広が
っているため、電装基板の膨張等の変形の影響を受けや
すくなってきた。またＣＣＤは、一般的に中央付近に端
子が出ており、両端はフリーな状態であるので、これも
電装基板の変形の影響を受けやすくしている。なおＣＣ
Ｄの電装基板上での位置合わせにスペーサを結合するも
のとして、例えば実開平７−２５６５６号公報、特開平
４−２５２６５６号公報に開示の技術がある。[0003] However, due to the high density of reading, CC
As for D, the number of elements has increased, and accordingly, the outer shape of the element housing has also increased. As a result, the size of the electrical board on which the CCD is mounted is increased, the size of the bracket that allows the position of the CCD to be adjusted is increased, and the mounting span is widened, so that the electrical board is susceptible to deformation such as expansion. . In addition, the CCD generally has a terminal protruding near the center and both ends are in a free state, so that this is also easily affected by the deformation of the electrical board. Note that CC
As a technique for connecting a spacer for positioning on the electrical board of D, there are techniques disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 7-25656 and Japanese Patent Laid-Open Publication No. 4-252656.
【０００４】図１は上述のような従来のＣＣＤの電装基
板への搭載例を上方から見た平面図である。図中１はＣ
ＣＤ、２は電装基板、３はブラケットで、ＣＣＤ１を搭
載する電装基板２は周囲の温度変化等により反り等が発
生しやすく、正規の搭載状態（図１Ａ）に比べ、ＣＣＤ
１の位置がずれてしまう（図１Ｂ）。これによりＭＴＦ
の低下、位置ズレを招くことになる。なおＣＣＤ１自体
は強固なハウジング３でパッケージされているので、熱
による変形は少ない。FIG. 1 is a plan view of an example of mounting the above-mentioned conventional CCD on an electric board as viewed from above. 1 in the figure is C
CD, 2 is an electric board, 3 is a bracket, and the electric board 2 on which the CCD 1 is mounted is liable to be warped due to a change in ambient temperature or the like.
1 is shifted (FIG. 1B). This gives the MTF
, And a positional shift is caused. Since the CCD 1 itself is packaged in the strong housing 3, the deformation due to heat is small.
【０００５】本発明は上記従来の問題点にかんがみ、Ｃ
ＣＤを電装基板を介さずに固定可能とすることにより、
ＭＴＦの低下等による画像劣化の発生を抑えることがで
きる画像読取装置を提供することを目的とする。The present invention has been made in view of the above-mentioned conventional problems, and has
By enabling the CD to be fixed without going through the electrical board,
It is an object of the present invention to provide an image reading apparatus capable of suppressing the occurrence of image deterioration due to a decrease in MTF or the like.
【０００６】また本発明は、電装基板の反り等の影響を
低減するようにＣＣＤを保持可能とする構成の画像読取
装置を提供することを目的とする。Another object of the present invention is to provide an image reading apparatus having a structure capable of holding a CCD so as to reduce the influence of warpage of an electric board and the like.
【０００７】さらに本発明は、従来の基板と同様に構成
して新規な調整工程を必要としない画像読取装置を提供
することを目的とする。Another object of the present invention is to provide an image reading apparatus which is configured in the same manner as a conventional substrate and does not require a new adjustment step.
【０００８】[0008]
【課題を解決するための手段】本発明の画像読取装置の
うち請求項１に係るものは、上記目的を達成するため
に、光源により照射され、原稿で反射された光を、結像
レンズを通してＣＣＤに入射させ、該ＣＣＤで上記原稿
上の画像を読み取る画像読取装置であって、撮像ユニッ
トの結像レンズとＣＣＤをブラケット等により一体化し
てなるものにおいて、該ＣＣＤとその電装基板との間に
スペーサを設け、該スペーサを上記ＣＣＤを保持した状
態で上記結像レンズとの距離及び姿勢等の調整可能なブ
ラケットに固定してなることを特徴とする。According to a first aspect of the present invention, there is provided an image reading apparatus, comprising: a light source illuminated by a light source and reflected by a document through an image forming lens; In an image reading apparatus for causing the CCD to read an image on the original by using the CCD, the imaging lens of the image pickup unit and the CCD being integrated by a bracket or the like, wherein the CCD and its electrical board are connected. And a spacer which is fixed to a bracket capable of adjusting the distance and the posture of the spacer from the imaging lens while holding the CCD.
【０００９】同請求項２に係るものは、上記目的を達成
するために、上記スペーサの外形が上記ＣＣＤの外形よ
りも大きいことを特徴とする。According to a second aspect of the present invention, in order to achieve the above object, the outer shape of the spacer is larger than the outer shape of the CCD.
【００１０】同請求項３に係るものは、上記目的を達成
するために、上記スペーサを、上記電装基板と上記ＣＣ
Ｄの間に配してなることを特徴とする。According to a third aspect of the present invention, in order to achieve the above object, the spacer is provided with the electric board and the CC.
D.
【００１１】[0011]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。図２は本発明に係る画像読取装置の
一実施形態の構成を示す概略断面図（Ａ）と要部の分解
斜視図（Ｂ）、図３は図２（Ｂ）の部分拡大断面図であ
る。画像読取装置の装置本体１０の上面にはコンタクト
ガラス１１が設けてあり、装置本体１０内には、動作方
向（図の左右方向）に図示しないガイド手段がコンタク
トガラス１１と平行に設けてあり、ガイド手段にキャリ
ッジ１２、１３が移動可能に設けてある。Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic cross-sectional view (A) and an exploded perspective view of a main part (B) showing the configuration of an embodiment of the image reading apparatus according to the present invention, and FIG. 3 is a partially enlarged cross-sectional view of FIG. . A contact glass 11 is provided on the upper surface of the apparatus main body 10 of the image reading apparatus, and a guide means (not shown) is provided in the apparatus main body 10 in the operation direction (the left-right direction in the drawing) in parallel with the contact glass 11. The carriages 12 and 13 are movably provided on the guide means.
【００１２】第１のキャリッジ１２には、コンタクトガ
ラス１１上の原稿１４に向けて光を照射して原稿１４を
照明する光源１５と第１ミラー１６とが搭載してあり、
第２のキャリッジ１３には第２ミラー１７と第３ミラー
１８とが搭載してある。また、第３ミラー１８の反射面
と対向する位置に、原稿からの反射光を収束して結像す
るレンズ１９と、その結像を読み取るＣＣＤユニット２
０が設けてある。The first carriage 12 has a light source 15 for illuminating the original 14 by irradiating the original 14 on the contact glass 11 with light and a first mirror 16 mounted thereon.
The second carriage 13 has a second mirror 17 and a third mirror 18 mounted thereon. A lens 19 that converges the reflected light from the document and forms an image at a position facing the reflecting surface of the third mirror 18, and a CCD unit 2 that reads the image.
0 is provided.
【００１３】ＣＣＤユニット２０は、ＣＣＤ２１、電装
基板２２、スペーサ２３、位置調整ブラケット２４から
なる。ＣＣＤ２１は、スペーサ２３の凹部２５内に外形
部分を保持させて接着してあり、位置が規制される構成
となっている。スペーサ２３の両端には、位置調整ブラ
ケット２４に調整後に固定可能な穴２６が設けてある。
また図３に示すように、電装基板２２側は固定用ネジ２
７が通過する大きな穴２８が設けてあり、固定用ネジ２
７は電装基板２２を通過してスペーサ２３を位置調整ブ
ラケット２４に固定するようになっている。そしてＣＣ
Ｄ２１は電装基板２２にハンダ付けする。また位置調整
ブラケット２４は、レンズ１９を保持したレンズユニッ
ト２９に固定して装置本体１０に組み込む。The CCD unit 20 comprises a CCD 21, an electric board 22, a spacer 23, and a position adjusting bracket 24. The CCD 21 has a configuration in which the outer portion is held and adhered in the concave portion 25 of the spacer 23 and the position is regulated. At both ends of the spacer 23, holes 26 which can be fixed to the position adjusting bracket 24 after adjustment are provided.
Also, as shown in FIG.
7 is provided with a large hole 28 through which the fixing screw 2
Numeral 7 passes through the electrical board 22 and fixes the spacer 23 to the position adjustment bracket 24. And CC
D21 is soldered to the electrical board 22. The position adjustment bracket 24 is fixed to the lens unit 29 holding the lens 19 and is incorporated in the apparatus main body 10.
【００１４】すなわちＣＣＤ２１をスペーサ２３により
保持し、スペーサ２３を位置調整ブラケット２４に締結
し、位置調整ブラケット２４はレンズユニット２９に固
定するので、電装基板２２に反り等の変形が生じてもＣ
ＣＤ２１に位置ずれが生じない。That is, since the CCD 21 is held by the spacer 23 and the spacer 23 is fastened to the position adjusting bracket 24 and the position adjusting bracket 24 is fixed to the lens unit 29, even if the electric board 22 is deformed such as warpage, the C
No displacement occurs on the CD 21.
【００１５】[0015]
【発明の効果】本発明の請求項１に係る画像読取装置
は、以上説明してきたように、結像レンズと一体化した
撮像ユニットのＣＣＤをとその電装基板との間にスペー
サを設け、ＣＣＤを保持した状態でスペーサを結像レン
ズとの距離及び姿勢等の調整可能なブラケットに固定し
てなるので、たとえ電装基板に変形が生じてもＣＣＤが
スペーサにより保持して位置調整ブラケットへ締結して
あるので、ＣＣＤに位置ずれが生じることはなく、ＭＴ
Ｆ低下等の画像劣化を低減することができるという効果
がある。As described above, the image reading apparatus according to the first aspect of the present invention is provided with a spacer between the CCD of the imaging unit integrated with the imaging lens and the electric board, and The spacer is fixed to a bracket that can adjust the distance and attitude to the imaging lens while holding the CCD, so even if the electrical board is deformed, the CCD holds the spacer and fastens it to the position adjustment bracket. Therefore, there is no displacement of the CCD and the MT
There is an effect that image deterioration such as a decrease in F can be reduced.
【００１６】請求項２に係る画像読取装置は、以上説明
してきたように、スペーサの外形がＣＣＤの外形よりも
大きいので、ＣＣＤの外形を保持して上記共通の効果を
よりよく発揮させることができる。In the image reading apparatus according to the second aspect, as described above, the outer shape of the spacer is larger than the outer shape of the CCD. it can.
【００１７】請求項３に係る画像読取装置は、以上説明
してきたように、スペーサを電装基板とＣＣＤの間に配
してなるので、上記共通の効果に加え、ＣＣＤと電装基
板が従来と同様にセンサボードとして構成でき、従来の
調整工程のまま、容易に位置調整することができるとい
う効果がある。According to the third aspect of the present invention, as described above, since the spacer is disposed between the electric board and the CCD, in addition to the above-mentioned common effects, the CCD and the electric board are the same as the conventional one. Therefore, there is an effect that the position can be easily adjusted with the conventional adjustment process.
【図１】従来のＣＣＤの電装基板への搭載例を上方から
見た平面図である。FIG. 1 is a plan view of a conventional example of mounting a CCD on an electrical board as viewed from above.
【図２】本発明に係る画像読取装置の一実施形態の構成
を示す概略断面図（Ａ）と要部の分解斜視図（Ｂ）であ
る。FIG. 2 is a schematic sectional view (A) showing the configuration of an embodiment of the image reading apparatus according to the present invention, and an exploded perspective view (B) of a main part.
【図３】図２（Ｂ）の部分拡大断面図である。FIG. 3 is a partially enlarged sectional view of FIG. 2 (B).
１０ 装置本体 １１ コンタクトガラス １２、１３ キャリッジ １４ 原稿 １５ 光源 １６ 第１ミラー １７ 第２ミラー １８ 第３ミラー １９ レンズ ２０ ＣＣＤユニット ２１ ＣＣＤ ２２ 電装基板 ２３ スペーサ ２４ 位置調整ブラケット ２５ スペーサの凹部 ２６ 位置調整ブラケットの穴 ２７ 固定用ネジ ２８ 電装基板の穴 ２９ レンズユニット Reference Signs List 10 Main body 11 Contact glass 12, 13 Carriage 14 Document 15 Light source 16 First mirror 17 Second mirror 18 Third mirror 19 Lens 20 CCD unit 21 CCD 22 Electrical board 23 Spacer 24 Position adjustment bracket 25 Spacer recess 26 Position adjustment bracket Hole 27 Fixing screw 28 Hole in electrical board 29 Lens unit
Claims (3)
光を、結像レンズを通してＣＣＤに入射させ、該ＣＣＤ
で上記原稿上の画像を読み取る画像読取装置であって、
撮像ユニットの結像レンズとＣＣＤをブラケット等によ
り一体化してなるものにおいて、該ＣＣＤとその電装基
板との間にスペーサを設け、該スペーサを上記ＣＣＤを
保持した状態で上記結像レンズとの距離及び姿勢等の調
整可能なブラケットに固定してなることを特徴とする画
像読取装置。1. Light emitted from a light source and reflected by a document is incident on a CCD through an imaging lens, and
An image reading apparatus for reading an image on the original,
In a device in which the imaging lens of the imaging unit and the CCD are integrated by a bracket or the like, a spacer is provided between the CCD and the electrical board, and the distance between the imaging lens and the CCD while holding the CCD is maintained. And an image reading device fixed to a bracket whose posture and the like can be adjusted.
よりも大きいことを特徴とする請求項１の画像読取装
置。2. The image reading apparatus according to claim 1, wherein an outer shape of said spacer is larger than an outer shape of said CCD.
ＣＤの間に配してなることを特徴とする請求項１または
２の画像読取装置。3. The method according to claim 1, wherein the spacer is formed by connecting the electric board and the C
3. The image reading device according to claim 1, wherein the image reading device is arranged between CDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053347A JP2001245098A (en) | 2000-02-29 | 2000-02-29 | Picture reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053347A JP2001245098A (en) | 2000-02-29 | 2000-02-29 | Picture reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001245098A true JP2001245098A (en) | 2001-09-07 |
Family
ID=18574746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000053347A Pending JP2001245098A (en) | 2000-02-29 | 2000-02-29 | Picture reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001245098A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007282071A (en) * | 2006-04-11 | 2007-10-25 | Murata Mach Ltd | Optical reader, and image reading and recording apparatus |
| JP2008066814A (en) * | 2006-09-05 | 2008-03-21 | Murata Mach Ltd | Optical reader and image reader |
| US8145099B2 (en) | 2007-12-18 | 2012-03-27 | Kabushiki Kaisha Toshiba | Image scanning unit and image forming apparatus including the image scanning unit |
| US8693069B2 (en) | 2011-05-31 | 2014-04-08 | Canon Kabushiki Kaisha | Document reading apparatus |
-
2000
- 2000-02-29 JP JP2000053347A patent/JP2001245098A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007282071A (en) * | 2006-04-11 | 2007-10-25 | Murata Mach Ltd | Optical reader, and image reading and recording apparatus |
| JP2008066814A (en) * | 2006-09-05 | 2008-03-21 | Murata Mach Ltd | Optical reader and image reader |
| US8145099B2 (en) | 2007-12-18 | 2012-03-27 | Kabushiki Kaisha Toshiba | Image scanning unit and image forming apparatus including the image scanning unit |
| US8693069B2 (en) | 2011-05-31 | 2014-04-08 | Canon Kabushiki Kaisha | Document reading apparatus |
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