JPS5825664A - Masking device for original - Google Patents
Masking device for originalInfo
- Publication number
- JPS5825664A JPS5825664A JP12294481A JP12294481A JPS5825664A JP S5825664 A JPS5825664 A JP S5825664A JP 12294481 A JP12294481 A JP 12294481A JP 12294481 A JP12294481 A JP 12294481A JP S5825664 A JPS5825664 A JP S5825664A
- Authority
- JP
- Japan
- Prior art keywords
- masked
- original
- parts
- document
- liquid crystal
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/60—Apparatus which relate to the handling of originals
- G03G15/605—Holders for originals or exposure platens
Abstract
Description
【発明の詳細な説明】
本発明は複写機、画像読取装置などの原稿を読み取る際
に用いる原稿マスク装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a document masking device used when reading a document in a copying machine, an image reading device, or the like.
原稿の所定の範囲内のみを複写したり、読み取りたい場
合には不要部分をマスクする原稿マスクが用いられてい
る。従来のこの種の原稿マスク装置は原稿カバーなどの
付属品であったり、使用者が場合に応じて複写したい部
分を切り抜いた用紙などを利用するものであった。原稿
カバーなどの付属装置の場合には、原稿台の」−に新た
にマスク装置を設置しなければならないため、原稿をマ
スクして複写しようとするたびに交換しなければならず
、マスク装置をセットする時間と、これをとりのぞく時
間がむだになるという欠点があった。When it is desired to copy or read only a predetermined area of a document, a document mask is used to mask unnecessary portions. Conventional document masking devices of this type utilize accessories such as document covers, or sheets of paper from which portions of the document that the user wishes to copy are cut out depending on the situation. In the case of an accessory device such as a document cover, a new mask device must be installed at the bottom of the document table, so it must be replaced every time the document is masked and copied, and the mask device must be replaced. The drawback was that the time it took to set it up and the time it took to remove it was wasted.
また、マスク装置を使用しない場合は、原稿以外の別の
紙などを用意し、原稿の複写したい部分と同等の範囲を
切り抜き、原稿に重ね合わせる方法が採用されているが
、マスクしたい部分が異なればその都度紙等を用意しな
ければならず時間がかかり、きわめて煩雑な作業になる
という欠点があった。In addition, if a masking device is not used, a method is used in which you prepare another paper other than the original, cut out an area equivalent to the part of the original you want to copy, and overlap it with the original, but if the part you want to mask is different, then However, paper etc. must be prepared each time, which is time consuming and an extremely complicated process.
このような欠点を改良するために、原稿台の透明ガラス
中に液晶体パネルを設け、原稿用紙に合わせてマスクし
たい部分の液晶パネル部に電圧を印加して、この部分を
光が透過しないようにして原稿マスクをかける方法が考
えられていた。In order to improve this drawback, a liquid crystal panel is installed in the transparent glass of the manuscript table, and a voltage is applied to the part of the liquid crystal panel that corresponds to the part of the manuscript paper that is to be masked to prevent light from passing through this part. A method of masking the manuscript was considered.
しかるにこのような方法で行なうと、原稿のマスクする
部分と、そうではない部分の２通りしか設定できない欠
点があった。従ってこのような方法では原稿のマスクす
る部分と関連づけてマスクしない部分を強調したい時、
例えば道路地図などの目標地点を複写する場合に、目標
点を強調して周辺地域との位置関係を表わすことができ
なくなる等の不都合が生じ非常に不便となる。However, this method has the drawback that only two settings can be made: a portion of the document to be masked and a portion not to be masked. Therefore, with this method, when you want to emphasize the parts of the manuscript that are not masked in relation to the parts that are to be masked,
For example, when copying a target point from a road map, etc., there are problems such as the inability to emphasize the target point to represent the positional relationship with surrounding areas, which is extremely inconvenient.
本発明は、以」−のような従来の欠点を除去するために
なされたもので、任意の時、任意の位置に自由に大きさ
を選んで、中間的なマスクをセットできる原稿マスク装
置を提供することを目的とし、さらに、写真原稿などの
中間調原稿の複写コピーの画質向上を目的とするもので
ある。The present invention has been made in order to eliminate the following drawbacks of the conventional art, and provides a document masking device that can set an intermediate mask of any size at any time and at any position. The object of the present invention is to improve the image quality of copies of halftone originals such as photographic originals.
本発明においては上記の目的を達成するために原稿台側
に多数個に分割された液晶パネルを設け、原稿用紙に合
わせてマスクしたい部分の液晶パネルに中間的な電圧を
印加し、この部分を透過する光を制御することができる
構造を採用した。In order to achieve the above object, in the present invention, a liquid crystal panel divided into many parts is provided on the document table side, and an intermediate voltage is applied to the liquid crystal panel of the part to be masked according to the document paper, and this part is masked. We adopted a structure that allows us to control the light that passes through it.
以下図面に示す実施例に基いて本発明の詳細な説明する
。The present invention will be described in detail below based on embodiments shown in the drawings.
第１図および第２図は本発明の一実施例を説明するもの
で、図において符号１〜４は可動接点でＸＹはｘｙＸ方
向任意の幅を持った液晶パイ・ルであ（３）
る。この液晶パネルは所定の大きさに多数個に分割され
ており、透明なガラスなどからなる原稿台６」二に設け
られている。液晶パネルＸＹは本実施例の場合１０Ｘ２
５個に分割されており、それぞれの行および列の端部に
は端子Ｘ、〜ＸＩｏ、Ｙ１〜Ｙ２５が設けられている。Figures 1 and 2 are for explaining one embodiment of the present invention. In the figures, reference numerals 1 to 4 are movable contacts, and XY is a liquid crystal pile (3) having an arbitrary width in the xyx directions. . This liquid crystal panel is divided into a large number of parts of a predetermined size, and is provided on a document table 6'2 made of transparent glass or the like. The liquid crystal panel XY is 10X2 in this example.
It is divided into five parts, and terminals X, -XIo, and Y1 to Y25 are provided at the ends of each row and column.
原稿台６の下面には共通端子Ｃが設けられており、共通
端子Ｃと端子Ｘ、〜Ｘ、。、Ｙｌと
〜Ｙ２．との間に電圧る印加することにより液晶パネル
ＸＹに電圧が加わり、原稿台を通過する光を散乱させ、
透過率を低下させる。この透過率は液晶パネルの印加電
圧に依存しており光の透過量を可変電源により任意に制
御できる。A common terminal C is provided on the lower surface of the document table 6, and the common terminal C and the terminals X, -X, are connected to each other. , Yl and ~Y2. By applying a voltage between the
Reduces transmittance. This transmittance depends on the voltage applied to the liquid crystal panel, and the amount of light transmitted can be arbitrarily controlled by a variable power source.
符号Ｅ１は可変電源、ＳＷ、は電源をＯＮ、ＯＦＦする
スイッチ、５は原稿、７，８は原稿を照射する露光源、
０．Ｐ、Ｑは原稿に応じた反射光を示す。Symbol E1 is a variable power supply, SW is a switch for turning on and off the power, 5 is a document, 7 and 8 are exposure sources for irradiating the document,
0. P and Q indicate reflected light depending on the original.
次に、以上のように構成された原稿マスク装置の動作に
つき説明する。Next, the operation of the document masking device configured as above will be explained.
今、第１図に符号Ａで示す部分を除いて中間的（ニマス
クして複写するものとすると、スイッチＳＷ１をＯＮと
し、液晶パイ・ルに対する印加電源Ｅ１を接（４）
続状態とする。しかる後、可動接点１，２を動かし、Ａ
の部分をＹ方向の両側から、すなわち第１図において接
点Ｙ１〜Ｙ７．Ｙ、、〜Ｙ２．の全てが接続されるよう
にする。さらに可動接点３，４を動かしＡの部分なＸ方
向の両側、すなわち接点Ｘ、〜Ｘ３゜Ｘ９〜Ｘ１ｏの全
てが接続されるようにする。したがって原稿台６上の液
晶パネルは符号Ａで示す範囲を除いて全てに電圧が印加
されることになる。したがって、この部分は入射光を散
乱させ原稿からの反射光が制御される。Now, assuming that the portion indicated by the symbol A in FIG. 1 is to be copied in an intermediate manner (nimasked), the switch SW1 is turned on and the power supply E1 applied to the liquid crystal pile is connected (4). After that, move movable contacts 1 and 2, and
from both sides in the Y direction, that is, from contact points Y1 to Y7 . in FIG. Y,...Y2. Make sure that all of them are connected. Further, the movable contacts 3 and 4 are moved so that both sides of the part A in the X direction, that is, all of the contacts X, -X3°, X9 - X1o are connected. Therefore, voltage is applied to all of the liquid crystal panels on the document table 6 except for the area indicated by symbol A. Therefore, this portion scatters the incident light and the reflected light from the original is controlled.
この状態で原稿５を原稿台６上に載せ、下方より露光を
行なうと符号Ａで示す部分では液晶パネルに電圧が印加
されていないため、露光源７は原稿台６を通過して原稿
５に当り、その反射光が符号Ｐで示すように反射し、複
写などの動作や読取動作を行なえる。しかし、Ａの部分
以外の所の露光源８は液晶によって散乱され、原稿から
の反射光が低下する。このよう（ニして必要な部分Ａの
みを除いてマスクされたこと（二なる。In this state, when the original 5 is placed on the original platen 6 and exposed from below, the exposure source 7 passes through the original platen 6 and is exposed to the original 5 because no voltage is applied to the liquid crystal panel in the part indicated by symbol A. When a hit occurs, the reflected light is reflected as shown by the symbol P, and operations such as copying and reading operations can be performed. However, the exposure source 8 other than the portion A is scattered by the liquid crystal, and the reflected light from the document is reduced. In this way (2), only the necessary part A was masked (2).
以下、同様にして可動接点１〜４を移動させ希望する部
分を自由にマスクすることができる。Thereafter, the movable contacts 1 to 4 can be moved in the same manner to freely mask a desired portion.
以上のような、マスクする部分としない部分の設定後、
可変電源Ｅ、の電圧を変化させて、希望とする中間的な
原稿マスク状態が得られるように調整することにより原
稿のマスク部分を任意のぼかし状態を得ることができる
。After setting the parts to be masked and parts not to be masked as described above,
By changing the voltage of the variable power source E and adjusting the voltage to obtain a desired intermediate document masking state, it is possible to obtain an arbitrary blurring state for the masked portion of the document.
また原稿のマスクを行なわないときには、スイッチＳＷ
１をオフとすれば、電源もオフとなり、原稿のマスクは
オフとなる。Also, when not masking the original, switch SW
If 1 is turned off, the power is also turned off, and the original mask is turned off.
さらに記憶装置を設けておき、１度セットしたマスク部
分の可動接点の位置、電源Ｅ、の電圧値を記憶させてお
き、任意の時にこの情報を読出してマスク位置を自動的
にセットさせることも可能である。また上記の実施例で
は電圧を印加すると不透明になる型の液晶パネルを用い
たが、電圧印加により透明（＝なる型のパネルを用いて
同様なマスク効果を得ることもできることは勿論である
。Furthermore, a storage device may be provided to store the position of the movable contact of the mask part once set and the voltage value of the power source E, and this information may be read out at any time to automatically set the mask position. It is possible. Further, in the above embodiment, a type of liquid crystal panel that becomes opaque when a voltage is applied is used, but it is of course possible to obtain a similar masking effect by using a type of panel that becomes transparent when a voltage is applied.
ところで上記の実施例においては液晶パネルは１０ Ｘ
２５個に分割した例として示したが、マスク部分を精
密にセットしたい場合には、分割数な増加させればよい
ことはもちろんである。By the way, in the above embodiment, the liquid crystal panel is 10X
Although the example is shown in which the mask is divided into 25 parts, it is of course possible to increase the number of divisions if it is desired to set the mask portion precisely.
さらに、写真原稿の様な場合、本液晶パネルの分割数を
さらに増加させ、各々のパネルの間に完全に光が透過す
る間隙を設けて、メツシュ状のパネルを設け、メツシュ
スクリーンを構成して中間調原稿の読取りを可能にし、
可変電源Ｅ、を制御して写真原稿のマスクの状態を中間
的にかけることも可能とすることができる。Furthermore, in cases such as photographic manuscripts, the number of divisions of this liquid crystal panel is further increased, and gaps are created between each panel through which light can completely pass through, creating a mesh-like panel to form a mesh screen. enables reading of halftone originals,
It is also possible to control the variable power source E to apply an intermediate state of masking the photographic original.
以上の説明から明らかなように本発明によれば原稿台」
−にＸ方向、Ｘ方向に多数個に分割された液晶パネルを
設け、これらのパネルに可変電圧を印加することにより
この部分を通過する光量を制、其し
御するよつ（−構成を採用しているため、マスク部分の
画質制御が任意にできることが可能となるものである。As is clear from the above description, according to the present invention
- A liquid crystal panel divided into many parts in the X direction and X direction is provided, and by applying a variable voltage to these panels, the amount of light passing through this part is controlled Therefore, it is possible to arbitrarily control the image quality of the masked portion.
第１図および第２図は本発明の一実施例を説明する平面
図および側面図である。FIGS. 1 and 2 are a plan view and a side view illustrating an embodiment of the present invention.
Claims (1)
ネルを設け、それぞれのパネルのうちマスクしたい部分
の液晶パネルに対して選択的に可変電圧を印加すること
ができるように構成したことを特徴とする原稿マスク装
置。A transparent document table that transmits light is provided with a liquid crystal panel divided into many parts, and a variable voltage can be selectively applied to the part of each panel that is desired to be masked. A document masking device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12294481A JPS5825664A (en) | 1981-08-07 | 1981-08-07 | Masking device for original |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12294481A JPS5825664A (en) | 1981-08-07 | 1981-08-07 | Masking device for original |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5825664A true JPS5825664A (en) | 1983-02-15 |
Family
ID=14848476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12294481A Pending JPS5825664A (en) | 1981-08-07 | 1981-08-07 | Masking device for original |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825664A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6195333A (en) * | 1984-10-16 | 1986-05-14 | Canon Inc | Image forming device |
| JPS62131244A (en) * | 1985-12-03 | 1987-06-13 | Ricoh Co Ltd | Copying machine |
| US5742709A (en) * | 1993-05-14 | 1998-04-21 | Fuji Xerox Co., Ltd. | Display panel for use with an image reading device |
| JP2011164608A (en) * | 2010-02-09 | 2011-08-25 | Sharp Corp | Display device with electrically switchable field of view for embedded light sensor |
-
1981
- 1981-08-07 JP JP12294481A patent/JPS5825664A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6195333A (en) * | 1984-10-16 | 1986-05-14 | Canon Inc | Image forming device |
| JPS62131244A (en) * | 1985-12-03 | 1987-06-13 | Ricoh Co Ltd | Copying machine |
| US5742709A (en) * | 1993-05-14 | 1998-04-21 | Fuji Xerox Co., Ltd. | Display panel for use with an image reading device |
| JP2011164608A (en) * | 2010-02-09 | 2011-08-25 | Sharp Corp | Display device with electrically switchable field of view for embedded light sensor |
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