JPH039340A - Projector - Google Patents
ProjectorInfo
- Publication number
- JPH039340A JPH039340A JP1142938A JP14293889A JPH039340A JP H039340 A JPH039340 A JP H039340A JP 1142938 A JP1142938 A JP 1142938A JP 14293889 A JP14293889 A JP 14293889A JP H039340 A JPH039340 A JP H039340A
- Authority
- JP
- Japan
- Prior art keywords
- magnification
- projection
- screen
- observed
- film
- 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.)
- Granted
Links
- 239000011150 reinforced concrete Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 9
- 238000003745 diagnosis Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005338 frosted glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Projection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
・本発明は、投影装置に関する。更に詳しくは尺度の相
違する被観測物を同尺度で投影する装置、および被観察
物がスクリーン上に投影された画像より大きい場合の画
像間の連結処理を効率的、かつ合理的に行う装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] - The present invention relates to a projection device. More specifically, the present invention relates to a device that projects objects of different scales at the same scale, and a device that efficiently and rationally connects images when the object is larger than the image projected on a screen. .
例えば、プリント板原板や基板の検査、パターン線幅寸
法の計測、或いは鉄筋コンクリート床版（以下ＲＣ床版
という）の点検診断などには、従来、一般に、精密投影
機が使用されている。For example, precision projectors have generally been used to inspect printed circuit boards and circuit boards, measure pattern line width dimensions, and inspect and diagnose reinforced concrete floor slabs (hereinafter referred to as RC floor slabs).
ところで、従来の投影機は、倍率を変更する場合、その
都度、投影レンズを交換するようになっているが、投影
レンズの倍率は、−ｍに、１０倍、２０倍、５０倍など
に固定されているため、例えば、尺度の相違する被観察
物の投影に使用すると、尺度の相違がそのまま拡大され
るため、合理的な点検診断が行えないという問題があっ
た。By the way, in conventional projectors, when changing the magnification, the projection lens is replaced each time, but the magnification of the projection lens is fixed at -m, 10x, 20x, 50x, etc. Therefore, for example, when used to project an object to be observed that has a different scale, the difference in scale is magnified as it is, so there is a problem that rational inspection and diagnosis cannot be performed.
例えば、ＲＣ床版の点検診断には、ＲＣ床版を撮影した
ポジフィルムが使用されるが、写真撮影によって得られ
たＲＣ床版のポジフィルムは、カメラからＲＣ床版まで
の距離がそれぞれ相違するため、撮影したコマごとに尺
度が相違する。For example, for inspection and diagnosis of RC floor slabs, positive film of RC floor slabs is used, but the distances from the camera to the RC floor slabs are different for each positive film of RC floor slabs obtained by photography. As a result, the scale differs for each photographed frame.
従って、倍率の固定した従来の投影機を使用すると、同
じ幅の「ひびわれ」でも投影機のスクリーン」二の「ひ
びわれ」の幅は、コマごとに相違することになり、ＲＣ
床版の点検診断が合理的でなく、作業性が悪い。Therefore, if you use a conventional projector with a fixed magnification, the width of the crack on the projector's screen will differ from frame to frame even if the width of the crack is the same.
Inspection and diagnosis of floor slabs is not rational and workability is poor.
他方、被観察物がスクリーン上に投影された画像より大
きい場合、画像間の連結処理方法が確立されていなかっ
たため、効率的、かつ合理的な点検診断が行えなかった
。On the other hand, when the object to be observed is larger than the image projected on the screen, efficient and rational inspection and diagnosis cannot be performed because a method for processing connections between images has not been established.
本発明は、係る従来の問題に鑑みてなされたものであり
、本発明の目的は、投影装置の大きさなど物理的に許容
できる範囲内において、無段階の倍率で投影し、プリン
ト板原板や基板の検査、パターン線幅寸法の計測、特に
、尺度の異なる被観察物の点検診断を効率的、かつ合理
的に実施可能にすると共に、被観察物がスクリーン上に
投影された画像より大きい場合の画像間の連結処理を効
率的、かつ合理的に実施可能にすることにある。The present invention has been made in view of such conventional problems, and an object of the present invention is to project at stepless magnification within a physically permissible range such as the size of the projection device, and to It enables efficient and rational inspection and diagnosis of substrate inspections, pattern line width measurements, and especially of objects to be observed of different scales, and in cases where the objects to be observed are larger than the image projected on the screen. The object of the present invention is to enable efficient and rational connection processing between images.
〔課題を解決するための手段〕
すなわち、本発明の第１番目の投影装置は、投影装置の
物理的な許容範囲内において、尺度の相違する被観察物
を、常時、同尺度で投影することを特徴とするものであ
る。[Means for Solving the Problems] In other words, the first projection device of the present invention is capable of always projecting objects with different scales at the same scale within the physical tolerance of the projection device. It is characterized by:
また、本発明の第２番目の投影装置は、載物透明板上に
格子を描き、ぞの１区域、又はスクリーンのＸ軸、Ｙ軸
方向の大きさを拡大倍率で割算した値を、載物台の移動
単位としたことを特徴とするものである。In addition, the second projection device of the present invention draws a grid on the transparent plate, and divides the size of each area or screen in the X-axis and Y-axis directions by the magnification magnification. The feature is that the stage is a unit of movement.
以下、図面を参照しながら本発明の実施例について説明
する。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係る投影装置の概略図であり、この投
影装置１は、投影機２、投影機コントローラー（コンピ
ュータ・−内蔵）３、画像出力装置としての玉二ター４
、中央演算処理装置としてのコンピューター５、入力装
置としてのキーボード６、ブロック７および透過型図形
入力装置１３などから構成されている。FIG. 1 is a schematic diagram of a projection apparatus according to the present invention.
, a computer 5 as a central processing unit, a keyboard 6 as an input device, a block 7, a transparent graphic input device 13, and the like.
」二記投影機２は、装置本体８、この本体８に立設され
た支柱９、この支柱９にＸ軸方向に昇降自在に設けられ
た投影箱１０、装置本体８内に設置された反射鏡１）、
装置本体８の前面に設置された良好な結像が得られるフ
ィルムやスリガラス製のスクリーン１２、このスクリー
ン１２に重ねて設置され、かつ前記コンピューター５に
直結された透過型図形入力装置１３、および透過型図形
入力装置１３上を当該図形入力装π１３と一体となって
スクリーン１２上の任意の図形をなぞることによって入
力できるカーソル１４から構成されている。2. The projector 2 consists of a device main body 8, a support 9 erected on the main body 8, a projection box 10 provided on the support 9 so as to be movable up and down in the X-axis direction, and a reflector installed inside the device main body 8. Mirror 1),
A screen 12 made of film or frosted glass that provides good image formation is installed on the front of the main body 8 of the device, a transmission type graphic input device 13 installed over this screen 12 and directly connected to the computer 5, and a transmission It consists of a cursor 14 that is integrated with the graphic input device π13 and allows input by tracing an arbitrary graphic on the screen 12.
また、投影箱１０内には、光源１５、被観察物Ｆをセッ
トするための載物台１６、投影用レンズ１７が設置され
ている。また、投影箱１０内には、載物台１６をＸ軸方
向に移動させると共にその位置を検出する移動・位置検
出装置１８、載物台１６をＹ軸方向に移動させると共に
その位置を検出する移動・位置検出装置１９、及び投影
用レンズ１７をＸ軸方向に移動させるど共にその位置を
検出する移動・位置検出装置２０が配設されている。ま
た、投影箱１０の昇降およびその位置検出は支柱９に設
けた移動・位置検出装置２１によって行われる。Further, inside the projection box 10, a light source 15, a stage 16 for setting the object to be observed F, and a projection lens 17 are installed. Also, inside the projection box 10, there is a movement/position detection device 18 that moves the stage 16 in the X-axis direction and detects its position, and a movement/position detection device 18 that moves the stage 16 in the Y-axis direction and detects its position. A movement/position detection device 19 and a movement/position detection device 20 for moving the projection lens 17 in the X-axis direction and detecting its position are provided. Further, lifting and lowering of the projection box 10 and detection of its position are performed by a movement/position detection device 21 provided on the support column 9.
上記投影箱１０前面の被観察物搬入口２２には、扉２３
が開閉自在に取り付けられており、また、投影箱１０と
装置本体８との間には、蛇腹２４が設けられている。A door 23 is provided at the observation object entrance 22 on the front side of the projection box 10.
is attached so as to be openable and closable, and a bellows 24 is provided between the projection box 10 and the device main body 8.
ここで、被観察物、特に、被観察物としてのＲＣ床版を
撮影したフィルムから反転したポジフィルムＦを投影機
２の大きさなどの物理的に許容できる範囲内において、
無段階の倍率で投影できる原理について説明する。Here, a positive film F obtained by inverting the film of the object to be observed, especially the RC floor slab as the object to be observed, is placed within a physically permissible range such as the size of the projector 2.
We will explain the principle by which projection can be performed at stepless magnification.
第２図に示すように、載物ガラス２５の上面とスクリー
ン１２の距離をＩＩ、ｔｍ、載物ガラス２５の上面とレ
ンズ１７の距離をＳｍｍ、レンズエフの焦点距離をｆｍ
、倍率をｍ （ｍ−像の大きさ／物体の大きさ）とする
と、上記Ｓは第（１）式、Ｌは第（２）式により表され
る。すなわち、５＝（１＋−）Ｘｆ ・ ・ ・
・ ・ ・ ・１）１）、＝ （２＋ｍ十二）ｘｆ
・・・・・（２）ｍ
従って、投影装置コントローラー３の拡大重大カキ−２
６により倍率ｍを入力すると、投影箱１０が２軸方向に
移動して載物ガラス２５の上面とスクリーン１２の距離
がＬＭになり、と同時に、レンズ１７もＺ軸の方向に移
動して載物ガラス２５とレンズ１７の距離がＳ鶴になっ
て、スクリーン１２上には、投影装置コントローラー３
によって入力した倍率の画像が投影されるのである。ま
た、上記の機構により画像の焦点合わせが不要になる。As shown in FIG. 2, the distance between the top surface of the mounting glass 25 and the screen 12 is II, tm, the distance between the top surface of the mounting glass 25 and the lens 17 is Smm, and the focal length of the lens F is fm.
, the magnification is m (m - size of image/size of object), then S is expressed by equation (1), and L is expressed by equation (2). That is, 5=(1+-)Xf ・ ・ ・
・ ・ ・ ・1)1), = (2+m12)xf
...(2)m Therefore, the enlarged important key of the projection device controller 3-2
6, when the magnification m is input, the projection box 10 moves in the two-axis direction, and the distance between the top surface of the mounting glass 25 and the screen 12 becomes LM, and at the same time, the lens 17 also moves in the Z-axis direction and the mounting The distance between the object glass 25 and the lens 17 is S, and the projection device controller 3 is placed on the screen 12.
An image with the input magnification is projected. Additionally, the above mechanism eliminates the need for image focusing.
ところで、被観察物であるＲＣ床版を撮影したフィルム
より得られたポジフィルムＦの縮率をＭ、投影装置コン
トローラー３によって入力する倍率をｍ１スクリーン１
２上に投影される画像の倍率をＫとすると、倍率には、
第（３）式で表される。すなわち、
Ｋ＝ＭＸｍ ・・・・・・・・・・・（３）ここで、
被写体（ＲＣ床版）とカメラのレンズの距離をａ、カメ
ラのレンズとフィルムの距離をｂとすると、撮影フィル
ム、すなわち、ポジフィルムＦの縮率Ｍは第（４）式で
表される。すなわち、
Ｍ −ｂ ／ ａ ・・・・・・・・・・・（４）従
って、ポジフィルムＦの縮率Ｍは、撮影時に分かってお
り、また、スクリーン１２上に投影される画像の倍率に
も任意に選択できるから上記第（３）式から投影装置コ
ントローラー３によって入力する倍率ｍを求めて、その
値を投影装置コントローラー３に入力すれば、上記のよ
うに、スクリーン１２上には、常に、同尺度の被観察物
の画像が投影され、ＲＣ床版の点検診断が効率的、かつ
合理的に実施可能になる。By the way, M is the reduction ratio of the positive film F obtained from the film photographing the RC floor slab that is the object to be observed, and m1 is the magnification input by the projection device controller 3.
If the magnification of the image projected onto 2 is K, then the magnification is:
It is expressed by equation (3). That is, K=MXm ・・・・・・・・・・・・(3) Here,
When the distance between the subject (RC floor slab) and the camera lens is a, and the distance between the camera lens and the film is b, the reduction ratio M of the photographic film, that is, the positive film F, is expressed by equation (4). That is, M - b / a (4) Therefore, the reduction ratio M of the positive film F is known at the time of shooting, and the magnification of the image projected on the screen 12 can be arbitrarily selected, so if the magnification m to be input by the projection device controller 3 is determined from the above equation (3) and that value is input to the projection device controller 3, then as described above, on the screen 12, An image of the object to be observed of the same scale is always projected, making inspection and diagnosis of the RC floor slab possible to be carried out efficiently and rationally.
他方、上記載物ガラス２５上には、第３図に示すように
、格子２８が描かれている。この格子２８は、Ｘ軸方向
の線Ａｔ 、 Ａｔ 、 Ａ２ 、Ａｓ及びＹ軸方向の
線Ｂ１．Ｂｚ 、Ｂ３ 、Ｂ４からなり、Ｘ軸方向の線
Ａ、、Ａ、、Ａ３．Ａ４及びＹ軸方向の線Ｂ、、Ｂ、、
Ｂ２．Ｂ、はそれぞれ等間隔を維持している。これらの
格子線の間隔は、最大拡大倍率で投影した時、スクリー
ン１２上に４本の格子線、例えばＡＩ 、 Ａｘ ＊８
１、Ｂ、によって囲まれた第１の区画■が投影可能にな
るような間隔になっている。上記格子２８の区画は、上
段が■、■、■の３つの区画からなっており、中段が■
、■、■の３つの区画からなっており、下段が■、■、
■の３つの区画からなっており、各区画が載物台１６の
１移動車位になっている。On the other hand, a grid 28 is drawn on the writing glass 25, as shown in FIG. This grating 28 includes lines At , At , A2 , As in the X-axis direction and lines B1 . Bz, B3, B4, and the lines A, , A, , A3 . in the X-axis direction. A4 and the line B in the Y-axis direction, , B, ,
B2. B, maintain equal intervals. The spacing between these grid lines is such that when projected at the maximum magnification, there are four grid lines on the screen 12, for example AI, Ax *8
The distance is such that the first section (2) surrounded by 1 and B can be projected. The grid 28 has three sections: ■, ■, ■ in the upper row, and ■ in the middle.
It consists of three sections: , ■, ■, and the bottom is ■, ■,
It consists of three compartments, each of which corresponds to one movement position of the stage 16.
また、載物ガラス２５上に格子２８を描かない場合には
、載物台１６の移動単位をスクリーン１２のＸ軸、Ｙ軸
方向の大きさを拡大倍率ｍで除した値にすることにより
スクリーンの大きさを越える被観察物の画像情報が過不
足なく取得できる。In addition, when the grid 28 is not drawn on the stage glass 25, the unit of movement of the stage 16 can be set to a value obtained by dividing the size of the screen 12 in the X-axis and Y-axis directions by the magnification factor m. It is possible to obtain image information of objects larger than
次に、上記投影装置の情報処理動作について説明する。Next, the information processing operation of the projection apparatus will be explained.
（ａ） 載物ガラス２５上に被観察物であるポジフィ
ルムＦを取り付けたあと、投影箱１０内に装填する。(a) After attaching the positive film F, which is the object to be observed, onto the mounting glass 25, it is loaded into the projection box 10.
（ｂｌ 次いで、投影装置コントローラー３に設けら
れているメインスイッチ（図示せず）を’ＯＮＪにした
あと、第（３）式から計算した倍率ｍを投影装置コント
ローラー３の拡大重大カキ−２６によって入力すると、
移動・位置検出装置２１が作動して投影箱１０がＸ軸方
向に移動し、載物ガラス２５の上面からスクリーン１２
までの距離がＬになる。また、移動・位置検出装置２０
が作動してレンズ１７がＸ軸方向に移動し、載物ガラス
２５の上面からレンズ１７までの距離がＳになり、スタ
ーン１２上には、同尺度の映像が投影される。(bl) Next, after turning on the main switch (not shown) provided on the projection device controller 3, input the magnification m calculated from equation (3) using the enlargement key 26 of the projection device controller 3. Then,
The movement/position detection device 21 is activated to move the projection box 10 in the X-axis direction, and the screen 12 is moved from the top surface of the object glass 25
The distance to is L. In addition, the movement/position detection device 20
is activated, the lens 17 moves in the X-axis direction, the distance from the top surface of the mounting glass 25 to the lens 17 becomes S, and an image of the same scale is projected onto the stern 12.
（Ｃ） また、投影装置コントローラー３の投影区域
指定キー２７によって投影区域、例えば投影指定区域■
を指定すると、移動・位置検出装置１８．１９が作動し
て載物台１６がＸ軸およびＹ軸方向に移動し、投影指定
区域■の中心が光軸２９に到達する。(C) Also, by pressing the projection area designation key 27 of the projection device controller 3, the projection area, for example, the projection designated area
When designated, the movement/position detection devices 18 and 19 are activated, the stage 16 is moved in the X-axis and Y-axis directions, and the center of the designated projection area (3) reaches the optical axis 29.
（ｄｌ 次いで、光源１５を点灯すると、光源１５か
ら照射された光束３０がポジフィルムＦ１載物ガラス２
５、レンズ１７及び反射鏡１）の順に透過してスクリー
ン１２」二にポジフィルムＦの投影指定区画■が投影さ
れる。(dl Next, when the light source 15 is turned on, the light beam 30 emitted from the light source 15 is transmitted to the positive film F1 and the mounting glass 2.
5. The designated projection section (2) of the positive film F is projected onto the screen 12'2 through the lens 17 and the reflecting mirror 1) in this order.
（ｅ） 次いで、キーボード６による諸元データ入力
後、デイスプレィ４の指示により、スクリーン１２、す
なわち、透過型図形入力装置１３上の損傷部を力・−ツ
ル１４でなぞって損傷デ・〜夕を入力する。入力された
データは、同時にデイスプレィ４に表示される。(e) Next, after inputting specification data using the keyboard 6, trace the damaged part on the screen 12, that is, the transparent graphic input device 13, with the force/curve 14 to check the damage data according to the instructions on the display 4. input. The input data is displayed on the display 4 at the same time.
Ｉｎ 投影指定区画■の損傷部入力完了後、投影装置
コントローラー３の投影区域指定キー２７によって投影
指定区域■を指定すると、スクリーン１２上にポジフィ
ルムＦの投影指定区画■が投影される。そこで、投影指
定区域■と同様、デイスジ１／イ４の指示によりスクリ
ーン１２、すなわち、透過型図形入力装置１３上の損傷
部をカーソル１４でなぞって損傷データを入力する。In After completing the input of the damaged part of the projection designated section (■), when the projection designated area (2) is designated by the projection area designation key 27 of the projection device controller 3, the projection designated section (2) of the positive film F is projected onto the screen 12. Therefore, similarly to the projection designated area (2), damage data is input by tracing the damaged part on the screen 12, that is, the transparent graphic input device 13, with the cursor 14 in accordance with the instruction from the disk 1/4.
（ｇｌ 同様にして、全区域の損傷データの入力作業
を行い、その作業が完了すると、コンビュ・−ター５１
こより投影指定区域■乃至■の連結処理が行われる。(gl In the same way, input the damage data for all areas, and when the work is completed, the computer 51
From this, the projection designated areas (1) to (3) are connected.
（り）次いで、コンビ１−ター５により損傷・劣化度を
診断し、定量化された損傷データおよび判定結果をカシ
−表示の損傷図と共にプロ・ツタ７で出力する。(i) Next, the degree of damage and deterioration is diagnosed by the combiner 5, and the quantified damage data and judgment results are outputted by the pro-tuber 7 together with the damage diagram displayed on the cover.
−１−記のように、本発明によれば、投影装置の大きさ
など物理的に許容できる範囲内心こおいて、無段階の倍
率で投影し、グリント板原板やＷ板の検査、パターン線
幅寸法の計測、特に、尺度の異なる被観察物の点検診断
を効率的、かつ合理的に実施可能になる。また、被観察
物がスクリーン上に投影された画像より大きい場合の画
像間の連結処理を効率的、かつ合理的に実施可能になる
。As described in -1-, according to the present invention, projection is performed at stepless magnification while keeping in mind the physically permissible range such as the size of the projection device, and inspection of glint plate original plate and W plate, pattern line Measurement of width dimensions, especially inspection and diagnosis of objects with different scales, can be carried out efficiently and rationally. Furthermore, when the object to be observed is larger than the image projected on the screen, it becomes possible to efficiently and rationally perform the process of connecting images.
第１図は、本発明に係る投影装置の概略図、第２図は無
段階の倍率で投影できる原理説明図、第３図は載物ガラ
スの平面図である。
１・・・投影装置、１２・・・スクリーン、２５・・・
載物ガラス、２８・・・格子、Ａ、〜Ａ４．８１〜Ｂ４
・・・格子線。FIG. 1 is a schematic diagram of a projection apparatus according to the present invention, FIG. 2 is an explanatory diagram of the principle of projection with stepless magnification, and FIG. 3 is a plan view of a mounting glass. 1... Projection device, 12... Screen, 25...
Mounting glass, 28... Lattice, A, ~A4.81~B4
...grid lines.
Claims (2)
相違する被観測物を、常時、同尺度で投影することを特
徴とする投影装置。(1) A projection device characterized in that objects to be observed of different scales are always projected at the same scale within the physical tolerance of the projection device.
クリーンのＸ軸、Ｙ軸方向の大きさを拡大倍率で除した
値を、載物台の移動単位としたことを特徴とする投影装
置。(2) A grid is drawn on the transparent stage plate, and the unit of movement of the stage is the value obtained by dividing one area of the grid or the size of the screen in the X-axis and Y-axis directions by the magnification factor. projection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14293889A JP2652245B2 (en) | 1989-06-07 | 1989-06-07 | Projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14293889A JP2652245B2 (en) | 1989-06-07 | 1989-06-07 | Projection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH039340A true JPH039340A (en) | 1991-01-17 |
| JP2652245B2 JP2652245B2 (en) | 1997-09-10 |
Family
ID=15327137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14293889A Expired - Fee Related JP2652245B2 (en) | 1989-06-07 | 1989-06-07 | Projection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2652245B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04318446A (en) * | 1991-04-17 | 1992-11-10 | Hitachi Electron Eng Co Ltd | Foreign matter detecting system |
| JP2007261704A (en) * | 2006-03-27 | 2007-10-11 | Ricoh Elemex Corp | Paper conveying device, paper post-treatment device and image forming device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4714770U (en) * | 1971-03-18 | 1972-10-20 | ||
| JPS5142036U (en) * | 1974-09-25 | 1976-03-29 | ||
| JPS52152742A (en) * | 1976-06-14 | 1977-12-19 | Otsuki Naoto | Apparatus for inspecting profile projection |
| JPS5971062A (en) * | 1982-10-18 | 1984-04-21 | Ricoh Co Ltd | Controlling method of copying machine |
-
1989
- 1989-06-07 JP JP14293889A patent/JP2652245B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4714770U (en) * | 1971-03-18 | 1972-10-20 | ||
| JPS5142036U (en) * | 1974-09-25 | 1976-03-29 | ||
| JPS52152742A (en) * | 1976-06-14 | 1977-12-19 | Otsuki Naoto | Apparatus for inspecting profile projection |
| JPS5971062A (en) * | 1982-10-18 | 1984-04-21 | Ricoh Co Ltd | Controlling method of copying machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04318446A (en) * | 1991-04-17 | 1992-11-10 | Hitachi Electron Eng Co Ltd | Foreign matter detecting system |
| JP2007261704A (en) * | 2006-03-27 | 2007-10-11 | Ricoh Elemex Corp | Paper conveying device, paper post-treatment device and image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2652245B2 (en) | 1997-09-10 |
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