JP2889671B2 - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JP2889671B2 JP2889671B2 JP22725590A JP22725590A JP2889671B2 JP 2889671 B2 JP2889671 B2 JP 2889671B2 JP 22725590 A JP22725590 A JP 22725590A JP 22725590 A JP22725590 A JP 22725590A JP 2889671 B2 JP2889671 B2 JP 2889671B2
- Authority
- JP
- Japan
- Prior art keywords
- moving frame
- optical axis
- point
- support side
- point support
- 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
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- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は,例えば複写機,イメージスキャナ,原稿読
取装置等の画像形成装置において,光学系を搭載して走
査する移動枠に係り,特に,平行に配備された一対の支
持台の一方の支持台上に2点で,他方の支持台上に1点
でそれぞれ摺動自在に支持される光学系の移動枠を備え
た画像形成装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving frame equipped with an optical system for scanning in an image forming apparatus such as a copying machine, an image scanner, and a document reading apparatus. The present invention relates to an image forming apparatus provided with a movable frame of an optical system that is slidably supported at two points on one of a pair of support bases arranged in parallel and at one point on the other support base.
この種の画像形成装置の一例となる複写機の移動枠を
第5図(a)に示す。FIG. 5A shows a moving frame of a copying machine as an example of this type of image forming apparatus.
同図において,例えば原稿露光用の光源(不図示)を
内蔵する第1移動枠30は,複写機本体側に紙面と直角方
向に平行に配備された一対の支持台2,3上に支持されて
いる。この第1移動枠30においては,その下面に突設さ
れた摺動し易い樹脂よりなる一つのスライダ34が一方の
支持台3上に支持され,これらの支持台に沿って上記第
1移動枠30の下面に連接された2つのスライダ35が他方
の支持台2上に支持されている。即ち,上記第1移動枠
30は上記支持台2,3上に平面視3点で摺動自在に支持さ
れている。又,この第1移動枠30の紙面直角方向奥側の
支持台2,3上にも,同様に平面視3点支持のスライダに
よって,ミラー(図外)を内蔵する第2移動枠が支持さ
れている。このような移動枠に搭載された光学系を用
い,レンズ等を介して上記光源による反射光を例えば読
取センサに結像させた時において,この時,例えば上記
ミラー上における光軸を調整する場合には,第5図
(b)に示すように,一般的に上記読取センサから視た
上記ミラー上の配光分布の中心(以下,配光中心Cとい
う)に上記光軸L1を一致させるように,例えばミラー等
の取付角度を調整するようになっている。In FIG. 1, for example, a first moving frame 30 incorporating a light source (not shown) for exposing a document is supported on a pair of support tables 2 and 3 arranged in the copier body side in a direction perpendicular to the paper surface. ing. In the first moving frame 30, one slider 34 made of easily slidable resin protruding from the lower surface thereof is supported on one of the support bases 3, and along the support bases, the first moving frame 30 is provided. Two sliders 35 connected to the lower surface of 30 are supported on the other support 2. That is, the first moving frame
Reference numeral 30 is slidably supported on the support bases 2 and 3 at three points in plan view. Similarly, a second movable frame incorporating a mirror (not shown) is supported on the support bases 2 and 3 on the back side of the first movable frame 30 in the direction perpendicular to the paper by a slider which is also supported at three points in a plan view. ing. When an optical system mounted on such a moving frame is used to form an image of reflected light from the light source through a lens or the like on a reading sensor, for example, when adjusting the optical axis on the mirror, for example, the, as shown in FIG. 5 (b), generally the center of the light distribution on the mirror as viewed from the reading sensor (hereinafter, referred to as light distribution center C) to match the optical axis L 1 in Thus, the mounting angle of, for example, a mirror is adjusted.
ところが,上記各移動枠は,平面視3点支持されてい
る為,2点支持側のスライダ35と1点支持側のスライダ34
とでは支持荷重の差からそれぞれの摩耗速度が異なる。
その為,例えば第1移動枠30は経時的に使用されるにつ
れて,上記1点支持側が下方に傾斜してゆく(第5図
(a)の2点鎖線で示す)。上記第2移動枠についても
同様である。この状態において,上記光軸L1は上記配光
中心Cからずれて,第5図(b)の二点鎖線L2で示す状
態となる。尚,この複写機においては,上記光軸L1のズ
レに関して許容範囲R3が設定されている。このように,
上記複写機では,個々の移動枠において1点支持側のス
ライダと2点支持側のスライダとに摩耗速度の差が生じ
ると共に,上記光軸L1が上記配光中心Cに初期設定され
る為,上記読取センサの出力が上記主走査方向に対し経
時的にフラットでなくなり,例えば転写紙に形成された
転写画像の直角度に影響を与える場合があった。However, since each of the moving frames is supported at three points in plan view, the slider 35 on the two-point support side and the slider 34 on the one-point support side are supported.
The respective wear rates differ between and due to the difference in the supporting load.
Therefore, for example, as the first moving frame 30 is used over time, the one-point support side is inclined downward (indicated by a two-dot chain line in FIG. 5A). The same applies to the second moving frame. In this state, the optical axis L 1 is shifted from the light distributing center C, the state shown by the two-dot chain line L 2 in FIG. 5 (b). In the copying machine, the allowable range R 3 with respect to deviation of the optical axis L1 is set. in this way,
Above copying machine, with the difference in wear rate occurs slider 1-point support side and the two-point support side slider in the individual movable frame, since the optical axis L 1 is initialized to the light distribution center C In some cases, the output of the reading sensor becomes not flat with time in the main scanning direction, which may affect, for example, the perpendicularity of a transfer image formed on transfer paper.
従って,本発明の第1の目的とするところは,機械寿
命期間中の経時使用に伴って,移動枠を通過する光軸の
偏位が是正され得る画像形成装置を提供することにあ
る。Accordingly, a first object of the present invention is to provide an image forming apparatus capable of correcting the deviation of the optical axis passing through the movable frame with the lapse of time during the machine life.
上記したような第1移動枠及び第2移動枠を配備して
なる複写機において,例えば支持台2上に上記各移動枠
の2点支持側を配置し,それぞれの1点支持側の他方の
支持台3上に配置させると,これらの移動枠が最も近接
した時,比較的副走査方向に幅広の2点支持側が連ねら
れる為,上記副走査方向のスペースを多く必要とする。
そこで,第6図に示すように,第1移動枠30及び第2移
動枠31をそれぞれの2点支持側と1点支持側とが摺動方
向となる上記副走査方向(矢印S)に交互になるうよう
に上記支持台2,3上に支持させたものがある。このよう
な複写機は上記第1移動枠30と第2移動枠31とが最も近
接した時,これらの占める空間をコンパクト化できると
いった利点を有していた。このような複写機において
も,各移動枠を通過する光軸はそれぞれの配光中心に初
期設定されることが多い。In a copying machine provided with the first moving frame and the second moving frame as described above, for example, a two-point support side of each of the above-mentioned moving frames is arranged on a support base 2 and the other of the respective one-point support sides is provided. When the moving frames are arranged closest to the support table 3, the two-point supporting sides which are relatively wide in the sub-scanning direction are connected when the moving frames are closest to each other, so that a large space in the sub-scanning direction is required.
Therefore, as shown in FIG. 6, the first moving frame 30 and the second moving frame 31 are alternately moved in the sub-scanning direction (arrow S) in which the two-point support side and the one-point support side are sliding directions. Some are supported on the support bases 2 and 3 as shown in FIG. Such a copying machine has the advantage that when the first moving frame 30 and the second moving frame 31 are closest to each other, the space occupied by them can be made compact. Also in such a copying machine, the optical axis passing through each moving frame is often initially set to the respective light distribution centers.
しかしながら,上記したような2点支持側と1点支持
側とを移動枠毎に副走査方向において交互に配備してな
る複写機では,第1移動枠及び第2移動枠において,上
記主走査方向に関して互いに反対側が経時使用に伴って
傾いてゆく。この為,移動枠間の光軸の相対ズレは,経
時使用に伴って相乗的に大きくなる。又,この時の光軸
のズレも上記配光中心から離れる方向になる。その結
果,例えば転写紙に形成される画像の歪みが増長される
方向にあった。However, in a copying machine in which the two-point support side and the one-point support side are alternately provided in the sub-scanning direction for each moving frame as described above, in the first moving frame and the second moving frame, the main scanning direction is used. , The opposite sides incline with use over time. For this reason, the relative deviation of the optical axis between the moving frames increases synergistically with use over time. Also, the deviation of the optical axis at this time is also in the direction away from the light distribution center. As a result, for example, the distortion of the image formed on the transfer paper tends to increase.
従って,本発明の第2の目的とするところは少なくと
も2つの光学系の移動枠に係る構成がコンパクトである
利点を生かし,且つ機械寿命期間中の経時使用に伴って
上記各移動枠を通過する光軸の偏位が是正され得る画像
形成装置を提供することにある。Accordingly, a second object of the present invention is to take advantage of the compact configuration of the moving frame of at least two optical systems, and to pass through each of the moving frames with the passage of time during the machine life. An object of the present invention is to provide an image forming apparatus capable of correcting a deviation of an optical axis.
上記第1の目的を達成するために,第1の発明が採用
する主たる手段は,その要旨とするところが,平行に配
備された一対の支持台の一方の支持台上に2点で,他方
の支持台上に1点でそれぞれ摺動自在に支持される光学
系の移動枠を備えてなる画像形成装置において,上記移
動枠の1点支持側を上記移動枠の摩耗の許容範囲内でそ
の摩耗方向とは反対方向に予め偏位させた点に係る画像
形成装置として構成されている。The main means employed by the first invention to achieve the first object is that the gist of the invention is that two points are provided on one of a pair of supports arranged in parallel and the other is provided on the other. In an image forming apparatus comprising a movable frame of an optical system slidably supported at one point on a support base, the one side supporting side of the movable frame is worn within an allowable range of wear of the movable frame. The image forming apparatus is configured as an image forming apparatus according to a point deviated in advance in a direction opposite to the direction.
又,上記第2の目的を達成するために第2の発明が採
用する主たる手段は,その要旨とするところが,平行に
配備された一対の支持台の一方の支持台上に2点で,他
方の支持台上に1点でそれぞれ摺動自在に支持される少
なくとも2つの光学系の移動枠を備え,上記各移動枠を
それぞれの2点支持側と1点支持側とを上記摺動方向に
交互に上記支持台上に配置してなる画像形成装置におい
て,上記各移動枠の1点支持側を上記移動枠の摩耗の許
容範囲内でその摩耗方向とは反対方向に予め偏位させた
点に係る画像形成装置として構成されている。The main means employed by the second invention to achieve the second object is that the gist of the invention is that two points are provided on one of a pair of supports arranged in parallel and the other is provided on the other. A movable frame of at least two optical systems which are slidably supported at one point on the support table, and each movable frame is moved between the two-point support side and the one-point support side in the sliding direction. In the image forming apparatus which is arranged alternately on the support table, a point at which one point of each of the moving frames is deviated in advance in a direction opposite to a wear direction within an allowable range of the wear of the moving frame. As an image forming apparatus according to the present invention.
第1の発明によれば,上記移動枠の1点支持側がこの
移動枠の摩耗の許容範囲内で当該摩耗方向とは反対方向
に予め偏位して構成されているので,この移動枠を通過
する光軸も当該許容範囲内で上記1点支持側に対応して
偏位している。このような移動枠を経時使用すると,一
般的には2点支持側よりも1点支持側の摩耗速度が早
く,上記経時使用に伴ってこの1点支持側の偏位量は減
少し同時に上記光軸の偏位も少なくなる。According to the first aspect, since the one-point support side of the moving frame is deviated in advance in a direction opposite to the wear direction within an allowable range of the wear of the moving frame, the moving frame passes through the moving frame. The corresponding optical axis is also deviated within the permissible range corresponding to the one-point support side. When such a moving frame is used for a long time, generally, the wear rate of the one-point support side is faster than that of the two-point support side, and the deviation amount on the one-point support side decreases with the above-mentioned time use, and at the same time, The deviation of the optical axis is also reduced.
又,第2の発明によれば,各移動枠の1点支持側が上
記移動枠の摩耗の許容範囲内でその摩耗方向とは反対方
向に予め偏位されているので,機械寿命期間中の経時使
用に伴って,上記各1点支持側がそれぞれの2点支持側
よりも大きく摩耗する。その為,これらの移動枠を通過
する光軸の偏位が経時的に是正される。これにより、上
記各移動枠に係る構成をコンパクトにした結果生じる問
題点が解消される。According to the second aspect of the present invention, the one-point support side of each moving frame is preliminarily deviated in the direction opposite to the wear direction within the allowable range of the wear of the moving frame. With use, each one-point support side wears more than its two-point support side. Therefore, the deviation of the optical axis passing through these moving frames is corrected over time. As a result, the problems caused as a result of downsizing the configuration relating to each of the moving frames are eliminated.
以下添付図面を参照しつつ,本発明を具体化した実施
例につき説明し本発明の理解に供する。ここに,第1図
は本発明の一実施例に係る複写機を部分的に示す概略構
成図,第2図は同複写機の第1移動枠及び第2移動枠の
配置状態を示す斜視図,第3図は第1移動枠及び第2移
動枠を通過する反射光の光軸の進行状態を側面より視た
説明図,第4図(a)は同複写機の読取センサから視た
第2移動枠の下部のミラー上における光軸を示す状態説
明図,同図(b)は上記読取センサから視た第2移動枠
の上部のミラー上における光軸を示す状態説明図,同図
(c)は上記読取センサから視た第1移動枠のミラー上
における光軸を示す状態説明図である。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is a schematic configuration diagram partially showing a copying machine according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an arrangement state of a first moving frame and a second moving frame of the copying machine. FIG. 3 is an explanatory view of the progress of the optical axis of the reflected light passing through the first moving frame and the second moving frame as viewed from the side, and FIG. FIG. 3B is a state explanatory view showing an optical axis on a mirror below the second moving frame, and FIG. 4B is a state explanatory view showing an optical axis on a mirror above the second moving frame viewed from the reading sensor; FIG. 3C is a state explanatory view showing the optical axis of the first moving frame on the mirror as viewed from the reading sensor.
本実施例に係る複写機1は,第1図に示すように,本
体15の上部に,光源12を搭載した第1移動枠10と,一組
のミラー13,13aを搭載した第2移動枠11とを備えてなっ
ている。この複写機1では,上記第1移動枠10と第2移
動枠11とが副走査方向(矢印S)に移動して,原稿台16
上に載置された原稿(図外)を露光走査し,上記原稿か
らの反射光を上記ミラー43,13,13a,レンズ41等を介し
て,CCDラインセンサよりなる読取センサ17によって原稿
画像として受光する。そして,上記読取センサ17からの
画像出力に基づいて,感光体ドラム18の外周面に形成さ
れた静電潜像に対応するトナー画像が転写紙P上に形成
されるようになっている。Copier 1 according to this embodiment, as shown in FIG. 1, the upper portion of the main body 15, a first movable frame 10 mounted with the light source 12, a second mobile equipped with a set of mirrors 13, 13 a A frame 11 is provided. In the copying machine 1, the first moving frame 10 and the second moving frame 11 move in the sub-scanning direction (arrow S), and
Been exposing and scanning the document (not shown) placed on top, the reflected light from the original through the mirrors 43,13,13 a, a lens 41, etc., an original image by the reading sensor 17 consisting of a CCD line sensor As light. A toner image corresponding to the electrostatic latent image formed on the outer peripheral surface of the photosensitive drum 18 is formed on the transfer paper P based on the image output from the reading sensor 17.
上記第1移動枠10は,第2図に示すように,本体側
の,例えば側板40に固設され,副走査方向(矢印S)に
平行に配備された一体の支持台2,3に支持されている。
この第1移動枠10の支持台2側端部には,合成樹脂製の
2つのスライダ5,6が下方に向けて突出して上記副走査
方向に連接されている。一方,支持台3側端部には,一
つのスライダ4が他方に向けて突出して設けられてい
る。即ち,上記第1移動枠10は支持台3上にスライダ4
により1点で摺動自在に支持され,上記支持台2上にス
ライダ5,6により2点で摺動自在に支持されている。As shown in FIG. 2, the first moving frame 10 is fixed to, for example, a side plate 40 on the main body side, and is supported by integral support bases 2, 3 arranged in parallel in the sub-scanning direction (arrow S). Have been.
Two sliders 5 and 6 made of synthetic resin protrude downward from the end of the first moving frame 10 on the support table 2 side and are connected in the sub-scanning direction. On the other hand, one slider 4 is provided at the end of the support base 3 so as to protrude toward the other. That is, the first moving frame 10 is provided with the slider 4 on the support 3.
Are slidably supported at one point, and are slidably supported at two points on the support base 2 by sliders 5 and 6.
又,上記第1移動枠10の上面には,光源12により照射
され上記原稿からの反射光を,第1移動枠10内に設けら
れたミラー43に導く為のスリット42が主走査方向(矢印
M)に長く開口して形成されている。On the upper surface of the first moving frame 10, a slit 42 for guiding reflected light emitted from the light source 12 from the original to a mirror 43 provided in the first moving frame 10 is provided in the main scanning direction (arrow). M).
上記第2移動枠11にも,支持台2,3側の各端部に,合
成樹脂よりなるスライダ7,8,9が下方に向けて突出して
設けられ,これらのスライダ7,8,9によって第2移動枠1
1が支持台2,3上に摺動自在に支持されている。この場
合,上記スライダ8,9は支持台3上に,上記スライダ7
は支持台2上に支持されている。即ち,上記第1移動枠
10と第2移動枠11とは,それぞれの2点支持側と1点支
持側とがこれらの摺動方向に交互になるように,上記支
持台2,3上に配置されている。このように,各移動枠10,
11をそれぞれの2点支持側と1点支持側とがその摺動方
向に交互になるように上記各支持台2,3上に配置すれ
ば,これらの移動枠10,11が最も近接した場合に上記摺
動方向にコンパクトな構成となる。The second moving frame 11 is also provided with sliders 7, 8, 9 made of synthetic resin at the respective ends on the support bases 2, 3 side, protruding downward, and these sliders 7, 8, 9 Second moving frame 1
1 is slidably supported on the supports 2 and 3. In this case, the sliders 8 and 9 are placed on the support 3 and the sliders 7 and
Are supported on a support base 2. That is, the first moving frame
The 10 and the second moving frame 11 are arranged on the supports 2 and 3 such that the two-point support side and the one-point support side alternate in the sliding direction thereof. Thus, each moving frame 10,
If the movable frames 10 and 11 are closest to each other, the 11 is placed on each of the supports 2 and 3 so that the two-point support side and the one-point support side alternate in the sliding direction. In addition, the configuration becomes compact in the sliding direction.
そして,上記第1移動枠10は,複数のプーリ20〜27に
捲き回しされたワイヤー14によって副走査方向に上記第
2移動枠11の2倍の速度で2倍の距離分移動するように
なっている。The first moving frame 10 is moved by the wire 14 wound around the plurality of pulleys 20 to 27 in the sub-scanning direction at twice the speed of the second moving frame 11 by twice the distance. ing.
そして、移動枠10において,1点支持側のスライダ42は
2点支持側のスライダ5,6よりも長く設定して設けられ
ている。又,移動枠11において,1点支持側のスタイダ7
は2点支持側のスライダ8,9よりも長く設定して設けら
れている。これは一般的に1点支持側のほうが2点支持
側よりも摩耗速度が早くこれに対処するためである。即
ち,上記各移動枠10,11の1点支持側がこれらの移動枠1
0,11の摩耗の許容範囲内でその摩耗方向とは反対方向に
予め偏位されてなっている。In the moving frame 10, the slider 42 on the one-point support side is provided to be longer than the sliders 5 and 6 on the two-point support side. Also, in the moving frame 11, the one-point supporting side
Is provided to be longer than the sliders 8 and 9 on the two-point support side. This is because the wear speed is generally faster on the one-point support side than on the two-point support side. That is, the one-point support side of each of the moving frames 10 and 11 is
It is preliminarily deviated in the direction opposite to the wear direction within the allowable range of wear of 0,11.
尚,上記各移動枠10,11の摩耗の許容範囲とは,読取
センサ17から視たミラー13,13a,43上及びスリット42に
おける光軸の許容範囲(第4図(a)のR1,同図(b)
のR2,同図(d)のR4)に対応している。又,上記光軸
の許容範囲とは,原稿画像に対する転写画像の歪みを表
す直角度が許容範囲にあるべき光軸の許容範囲をいう。The allowable range of the wear of the moving frames 10 and 11 is the allowable range of the optical axis on the mirrors 13, 13 a and 43 and the slit 42 as viewed from the reading sensor 17 (R 1 in FIG. 4A). , The same figure (b)
R 2 , and R 4 ) in FIG. Further, the allowable range of the optical axis refers to the allowable range of the optical axis in which the squareness representing the distortion of the transferred image with respect to the original image should be within the allowable range.
そこで,上記したように構成される複写機1におい
て,光源12により照射され原稿等からの反射光の光軸の
進行状態を第3図に示す。同図において,ミラー13,43
に付されたハッチングは各ミラーの背面を示す。この場
合,第2移動枠10は紙面垂直方向手前側が高く偏位して
いるのでミラー43の背面が見える。又,第2移動枠11は
紙面垂直方向奥側が高く偏位しているのでミラー13の背
面とミラー13aの鏡面とが見えることになる。FIG. 3 shows the progress of the optical axis of light reflected by the light source 12 and reflected from a document or the like in the copying machine 1 configured as described above. In the figure, mirrors 13, 43
The hatching attached to indicates the back of each mirror. In this case, the rear side of the mirror 43 can be seen because the second moving frame 10 is highly displaced on the near side in the direction perpendicular to the paper surface. Also, so that the second moving frame 11 is visible and the mirror surface of the back and the mirror 13 a of the mirror 13 so that the direction perpendicular to the plane rear side is made higher offset.
従って,上記反射光の光軸L11は,第2移動枠11のミ
ラー13aにおいて読取センサ17から視た場合,第4図
(a)に示すように,支持台3側が上記ミラー13aにお
ける配光中心Cよりもその許容範囲R1内で予め副走査方
向とは逆方向に偏位していることになる。Accordingly, the optical axis L 11 of the reflected light, when viewed from the reading sensor 17 in the mirror 13 a of the second moving frame 11, as shown in 4 (a), the support base 3 side in the mirror 13 a It will have been displaced in the opposite direction also in advance sub-scanning direction thereof within the allowable range R 1 from the light distribution center C.
一方,上記第2移動枠11のミラー13において,読取セ
ンサ17から視た場合,第4図(b)に示すように,上記
光軸L21は支持台2側がミラー13の配光中心Cよりもそ
の許容範囲R2内で予め副走査方向に偏位していることに
なる。その結果,第1移動枠10のミラー43において読取
センサ17から視た場合,第4図(c)に示すように,光
軸L31は支持台2側が副走査方向に,支持台3側が反副
走査方向にそれぞれ配光中心Cから偏位することにな
る。更に,上記第1移動枠10のスリット42を読取センサ
17から視た場合の光軸L41を第4図(d)に示す。この
光軸L41の配光中心Cからの偏位の態様は先に述べたミ
ラー43上における光軸L31と同様である。そして,上記
光軸L41はこの光軸L41に対して予め設定されている上記
偏位の許容範囲R4内にある。On the other hand, in the mirror 13 of the second moving frame 11, when viewed from the reading sensor 17, as shown in FIG. 4 (b), the optical axis L 21 than the light distribution center C of the support base 2 side mirror 13 also that is offset in advance in the sub-scanning direction thereof within the allowable range R 2. As a result, when viewed from the reading sensor 17 in the mirror 43 of the first movable frame 10, as shown in FIG. 4 (c), the optical axis L 31 is the support base 2 side sub-scanning direction, the support base 3 side reaction Each light beam is deviated from the light distribution center C in the sub-scanning direction. Further, the slit 42 of the first moving frame 10 is
The optical axis L 41 when viewed from the 17 shown in FIG. 4 (d). Aspects of the deviation from the light distribution center C of the optical axis L 41 is the same as that of the optical axis L 31 in the mirror 43 described above. Then, the optical axis L 41 in the above deviation is within the allowable range R 4 which is set in advance for the optical axis L 41.
従って,上記したような複写機1の機械使用初期にお
いては,各移動枠10,11の1点支持側のスライダ4,7は摩
耗しておらず,上記スリット42及びミラー13,13a,43に
おける光軸も各移動枠10,11の傾きに対応して偏位して
いる。Therefore, in the mechanical initial use of the copying machine 1 as described above, the slider 4 and 7 of the one-point support side of the movable frame 10, 11 is not worn, the slit 42 and the mirror 13, 13 a, 43 The optical axis at is also deviated in accordance with the inclination of each of the moving frames 10 and 11.
そのため,この場合において転写紙P上に転写された
画像の直角度は正常の状態からずれているが、上記直角
度のずれの程度はその許容範囲内であって問題はない。Therefore, in this case, the squareness of the image transferred onto the transfer paper P is shifted from the normal state, but the degree of the squareness shift is within the allowable range, and there is no problem.
引き続き,上記複写機1を経時的に使用すると,上記
移動枠10の1点支持側のスライダ42は2点支持側のスラ
イダ5,6よりも大きく摩耗し,同様に移動枠11の1点支
持側のスライダ7は2点支持側のスライダ8,9よりも大
きく摩耗する。それにより,上記各移動枠10,11の1点
支持側が経時的に次第に下降する。これに伴って,上記
ミラー13a上における光軸L11,ミラー13上における光軸L
21,ミラー43上における光軸L31及びスリット42における
光軸L41はいずれもそれぞれの配光中心Cに次第に近づ
くことになる。それによって、読取センサ17から出力信
号として出力される転写画像の直角度は次第に向上す
る。Subsequently, when the copying machine 1 is used over time, the slider 42 on the one-point support side of the moving frame 10 wears more than the sliders 5 and 6 on the two-point supporting side. The slider 7 on the side wears more than the sliders 8, 9 on the two-point support side. Thereby, the one-point support side of each of the moving frames 10 and 11 gradually lowers with time. Accordingly, the optical axis L 11 on the mirror 13 a and the optical axis L on the mirror 13
21 , the optical axis L 31 on the mirror 43 and the optical axis L 41 on the slit 42 gradually approach the respective light distribution centers C. Thereby, the squareness of the transferred image output as an output signal from the reading sensor 17 gradually increases.
更に,上記第1移動枠10及び第2移動枠11は、これら
の機械寿命期間において,読取センサ17から視たスリッ
ト42における光軸41が許容範囲R4内である2点鎖線の位
置(第4図(d))に至るまで使用され得る。従って,
上記直角度のずれを考慮しなければ,上記第1及び第2
移動枠10,11はそれぞれの摩耗の許容範囲全体に亘って
使用されるので,従来と比べて長寿命となる。Furthermore, the first movable frame 10 and the second moving frame 11 is, in these machines lifetime, the position of two-dot chain line optical axis 41 is within the allowable range R 4 in the slit 42 as viewed from the reading sensor 17 (first 4 (d)). Therefore,
If the deviation of the perpendicularity is not taken into account, the first and second
Since the moving frames 10 and 11 are used over the entire allowable range of wear, they have a longer life than conventional ones.
このように,本実施例に係る複写機1では,第1移動
枠10及び第2移動枠11の1点支持側がこれらの移動枠1
0,11の摩耗の許容範囲内でその摩耗方向とは反対方向に
予め偏位して構成されているので,これらの移動枠10,1
1に係る構成をコンパクトにする為にこれらの移動枠10,
11をそれぞれの2点支持側と1点支持側とがその副走査
方向に交互になるように支持台2,3上に配置された結果
生じた,例えば機械の経時使用に伴って各移動枠10,11
を通過する光軸の偏位が大きくなるといった問題点を解
消することができる。As described above, in the copying machine 1 according to the present embodiment, one point supporting side of the first moving frame 10 and the second moving frame 11
The movable frames 10 and 1 are configured so as to be deviated in advance in the direction opposite to the wear direction within the allowable range of wear of 0 and 11.
In order to make the configuration according to 1 compact, these moving frames 10,
11 is the result of arranging the two-point support side and the one-point support side on the supports 2 and 3 alternately in the sub-scanning direction. 10,11
The problem that the deviation of the optical axis passing through the optical path becomes large can be solved.
本実施例では,上記第1移動枠10及び第2移動枠11は
それぞれのスライダ4〜9を介して支持台2,3上に支持
されたが,これに限定されるものではなく,このような
第1移動枠,第2移動枠が支持台2,3の下面に上方に向
けて支持される場合にも適用することができる。In the present embodiment, the first moving frame 10 and the second moving frame 11 are supported on the support bases 2 and 3 via the respective sliders 4 to 9, but the present invention is not limited to this. The present invention can also be applied to a case where the first and second moving frames are supported upward on the lower surfaces of the supports 2 and 3.
又,上記実施例の複写機1では,第1移動枠10及び第
2移動枠11のそれぞれの一点支持側をその摩耗方向とは
反対方向に予め偏位させたが,これら双方の移動枠の1
点支持側を共に偏位させなければならないものではな
く,いずれか片方の移動枠の1点支持側のみを上記のよ
うに偏位させても良い。Further, in the copying machine 1 of the above-described embodiment, each one-point support side of the first moving frame 10 and the second moving frame 11 is deviated in advance in a direction opposite to the wear direction. 1
It is not necessary to deviate both the point support sides, and only one point support side of one of the moving frames may be deviated as described above.
上記第1の発明によれば,平行に配備された一対の支
持台の一方の支持台上に2点で,他方の支持台上に1点
でそれぞれ摺動自在に支持される光学系の移動枠を備え
てなる画像形成装置において,上記移動枠の1点支持側
を上記移動枠の摩耗の許容範囲内でその摩耗方向とは反
対方向に予め偏位させたことを特徴とする画像形成装置
が提供される。それによって,機械寿命期間中の経時使
用に伴って移動枠を通過する光軸の偏位が是正される。According to the first aspect of the invention, the movement of the optical system is slidably supported at two points on one of the pair of support tables arranged in parallel and at one point on the other support table. In the image forming apparatus provided with a frame, the one-point support side of the moving frame is previously displaced in a direction opposite to a wear direction within an allowable range of the wear of the moving frame. Is provided. Thereby, the deviation of the optical axis passing through the moving frame is corrected with the aging use during the machine life.
又,上記第2の発明によれば,平行に配備された一対
の支持台の一方の支持台上に2点で,他方の支持台上に
1点でそれぞれ摺動自在に支持される少なくとも2つの
光学系の移動枠を備え,上記各移動枠をそれぞれの2点
支持側と1点支持側とを上記摺動方向に交互に上記支持
台上に配置してなる画像形成装置において,上記各移動
枠の1点支持側を上記移動枠の摩耗の許容範囲内でその
摩耗方向とは反対方向に予め偏位させたことを特徴とす
る画像形成装置が提供される。それにより,少なくとも
2つの光学系の移動枠に係る構成がコンパクトである利
点を生かし,且つ機械寿命期間中の経時使用に伴って,
これらの移動枠を通過する光軸の偏位が是正され得る。According to the second aspect of the present invention, at least two slidably supported two points on one of the pair of support bases arranged in parallel and one point on the other support base are slidable. An image forming apparatus comprising: a moving frame for two optical systems, wherein each of the moving frames is alternately arranged on the support table in the sliding direction on the two-point support side and the one-point support side. An image forming apparatus is provided, wherein the one-point support side of the moving frame is displaced in advance in a direction opposite to the wear direction within an allowable range of the wear of the moving frame. Thereby, taking advantage of the compact configuration of the moving frame of at least two optical systems, and with the use over time during the machine life,
The deviation of the optical axis passing through these moving frames can be corrected.
第1図は本発明の一実施例に係る複写機を部分的に示す
概略構成図,第2図は同複写機の第1移動枠及び第2移
動枠の配置状態を示す斜視図,第3図は第1移動枠及び
第2移動枠を通過する反射光の光軸の進行状態を側面よ
り視た説明図,第4図(a)は同複写機の読取センサか
ら視た第2移動枠の下部のミラー上における光軸を示す
状態説明図,同図(b)は上記読取センサから視た第2
移動枠の上部のミラー上における光軸を示す状態説明
図,同図(c)は上記読取センサから視た第1移動枠の
ミラー上における光軸を示す状態説明図,同図(d)は
上記読取センサから視た第1移動枠のスリットにおける
光軸を示す状態説明図,第5図(a)は本発明の背景の
一例となる従来の複写機の光学系の移動枠が平行に配備
された一対の支持台上に支持された状態を示す模式図,
同図(b)は上記移動枠に形成されたスリットにおける
光軸を読取センサから視た状態説明図,第6図は上記従
来の複写機の第1移動枠及び第2移動枠の配置状態を平
面に視た模式図である。 〔符号の説明〕 1……複写機 2,3……支持台 4,5,6,7,8,9……スライダ 10……第1移動枠 11……第2移動枠 12……光源 13,13a,43……ミラー 42……スリットFIG. 1 is a schematic configuration diagram partially showing a copying machine according to an embodiment of the present invention, FIG. 2 is a perspective view showing an arrangement state of a first moving frame and a second moving frame of the copying machine, and FIG. FIG. 4 is an explanatory view of the progress of the optical axis of reflected light passing through the first moving frame and the second moving frame as viewed from the side, and FIG. 4A is a second moving frame viewed from a reading sensor of the copying machine. FIG. 4B is a state explanatory view showing an optical axis on a mirror below the lower part of FIG.
FIG. 4C is a state explanatory view showing the optical axis on the mirror above the moving frame, FIG. 5C is a state explanatory view showing the optical axis on the mirror of the first moving frame viewed from the reading sensor, and FIG. FIG. 5 (a) is a state explanatory view showing an optical axis in a slit of the first moving frame viewed from the reading sensor, and FIG. 5 (a) shows a moving frame of an optical system of a conventional copying machine, which is an example of the background of the present invention, arranged in parallel. Schematic diagram showing a state of being supported on a pair of supported supports,
FIG. 2B is an explanatory view of the optical axis of the slit formed in the moving frame as viewed from the reading sensor. FIG. 6 shows the arrangement of the first moving frame and the second moving frame of the conventional copying machine. It is the schematic diagram seen from the plane. [Description of Signs] 1... Copier 2, 3... Support 4, 5, 6, 7, 8, 9… Slider 10… First moving frame 11… Second moving frame 12… Light source 13 , 13 a , 43 …… Mirror 42 …… Slit
Claims (2)
持台上に2点で,他方の支持台上に1点でそれぞれ摺動
自在に支持される光学系の移動枠を備えてなる画像形成
装置において, 上記移動枠の1点支持側を上記移動枠の摩耗の許容範囲
内でその摩耗方向とは反対方向に予め偏位させたことを
特徴とする画像形成装置。1. A moving frame for an optical system, which is slidably supported at two points on one of a pair of supporting stands arranged in parallel and at one point on the other supporting stand. The image forming apparatus according to claim 1, wherein the one-point support side of the moving frame is displaced in advance in a direction opposite to a wear direction of the moving frame within an allowable range of the wear of the moving frame.
持台上に2点で,他方の支持台上に1点でそれぞれ摺動
自在に支持される少なくとも2つの光学系の移動枠を備
え,上記各移動枠をそれぞれの2点支持側と1点支持側
とを上記摺動方向に交互に上記支持台上に配置してなる
画像形成装置において, 上記各移動枠の1点支持側を上記移動枠の摩耗の許容範
囲内でその摩耗方向とは反対方向に予め偏位させたこと
を特徴とする画像形成装置。2. A moving frame for at least two optical systems which are slidably supported at two points on one of a pair of supporting stands arranged in parallel and at one point on the other supporting stand. Wherein each of the moving frames is provided with the two-point support side and the one-point support side alternately arranged on the support table in the sliding direction. An image forming apparatus, wherein the side is displaced in advance in a direction opposite to a wear direction within an allowable range of wear of the moving frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22725590A JP2889671B2 (en) | 1990-08-28 | 1990-08-28 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22725590A JP2889671B2 (en) | 1990-08-28 | 1990-08-28 | Image forming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04107543A JPH04107543A (en) | 1992-04-09 |
JP2889671B2 true JP2889671B2 (en) | 1999-05-10 |
Family
ID=16857954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22725590A Expired - Lifetime JP2889671B2 (en) | 1990-08-28 | 1990-08-28 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2889671B2 (en) |
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US10190452B2 (en) | 2015-10-27 | 2019-01-29 | Suzuki Motor Corporation | Engine lubrication structure and motorcycle |
DE102016012781A1 (en) | 2015-10-27 | 2017-04-27 | Suzuki Motor Corporation | Lubrication structure of an internal combustion engine and motorcycle |
-
1990
- 1990-08-28 JP JP22725590A patent/JP2889671B2/en not_active Expired - Lifetime
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