JPS62186280A - Copying device - Google Patents
Copying deviceInfo
- Publication number
- JPS62186280A JPS62186280A JP61026937A JP2693786A JPS62186280A JP S62186280 A JPS62186280 A JP S62186280A JP 61026937 A JP61026937 A JP 61026937A JP 2693786 A JP2693786 A JP 2693786A JP S62186280 A JPS62186280 A JP S62186280A
- Authority
- JP
- Japan
- Prior art keywords
- density
- mode
- automatic
- density adjustment
- knob
- 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
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000001454 recorded image Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
Landscapes
- Developing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は画像濃度を自動的にまたは手動により調整する
ことができる複写装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a copying apparatus that can adjust image density automatically or manually.
（従来技術）
電子写真複写機やある種のファクシミリなどの静電記録
装置においては、感光体または誘電体上に形成した静電
潜像をトナーを含む現像剤により現像して可視像を形成
し記録画像を得ている。従来この種の静電記録装置には
、記録画像の濃度を調整する方式として、装置に設けら
れた濃度調整つまみを手動で無段階式に調整する手動濃
度調整モードと、複写動作に先立って原稿の画像濃度を
検知しその濃度に応じて複写濃度を自動的に調整する自
動濃度調整モードとを切換スイッチなどによって選択的
に切り換えることができる濃度調整手段を備えているも
のがある。この場合、手動濃度調整モードにおいては濃
度調整操作により感光体への露光量または現像装置に印
加する現像バイアスを調整して、トナーの付着量を制御
し、自動濃度調整モードにおいては、原稿濃度に応じて
現像バイアスを自動的に調整することによりトナーの付
着量を制御している。なお周知のとおり、感光体が正帯
電しているときは現像装置に印加するバイアス電圧を高
くすれば複写濃度は薄くなり、逆にバイアス電圧を低く
すると複写濃度は濃くなる。(Prior Art) In electrostatic recording devices such as electrophotographic copying machines and some types of facsimile machines, a visible image is formed by developing an electrostatic latent image formed on a photoreceptor or dielectric material with a developer containing toner. and recorded images. Conventionally, this type of electrostatic recording device has a manual density adjustment mode in which the density adjustment knob provided on the device is manually adjusted steplessly to adjust the density of the recorded image, and a manual density adjustment mode in which the density adjustment knob provided on the device is manually adjusted in a stepless manner. Some printers are equipped with a density adjustment means that can be selectively switched between an automatic density adjustment mode in which the image density of the image is detected and the copy density is automatically adjusted according to the detected density using a changeover switch or the like. In this case, in the manual density adjustment mode, the amount of exposure to the photoconductor or the development bias applied to the developing device is adjusted by the density adjustment operation to control the amount of toner adhesion, and in the automatic density adjustment mode, the density of the original is adjusted. The amount of toner adhesion is controlled by automatically adjusting the developing bias accordingly. As is well known, when the photoreceptor is positively charged, increasing the bias voltage applied to the developing device will reduce the copy density, and conversely, decreasing the bias voltage will increase the copy density.
しかしながら、このような従来の複写装置にあっては、
濃度調整モードを切り換えるのに切換スイッチを用いて
いるので、切換スイッチの設置スペースが必要となりま
た部品コストもかかる。ざらに切換え操作をする場合も
、たとえばモードを自動から手動に切り換えるときには
−Ｈ切換スイッチを押してからざらに濃度調整つまみに
よって濃度を調整しなければならず、このような２段階
の操作は使い勝手が悪かった。However, in such conventional copying devices,
Since a changeover switch is used to change over the density adjustment mode, installation space for the changeover switch is required, and parts costs are also increased. Even when performing a rough switching operation, for example, when changing the mode from automatic to manual, it is necessary to press the -H selector switch and then adjust the density using the rough density adjustment knob, and such a two-step operation is not easy to use. It was bad.
（発明の目的および構成）
本発明は上記の点にかんがみてなされたもので、自動濃
度調整モードと手動濃度調整モードとを選択的に切り換
えることができる複写装置において、部品点数を減らし
、かつ濃度調整の際の操作性を向上させることを目的と
し、そのため手動濃度調整手段を所定位置に設定したと
き、自動濃度調整モードに切り換わるように構成した。(Objects and Structure of the Invention) The present invention has been made in view of the above points, and provides a copying machine that can selectively switch between an automatic density adjustment mode and a manual density adjustment mode. The purpose of the present invention is to improve the operability during adjustment, and for this purpose, when the manual density adjustment means is set at a predetermined position, it is configured to switch to automatic density adjustment mode.
（実施例） 以下図面に基づいて本発明を説明する。(Example) The present invention will be explained below based on the drawings.
第１図は本発明による複写装置の一実施例の概略構成を
示すブロック線図、第２図はその複写装置の操作パネル
の正面図である。FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a copying apparatus according to the present invention, and FIG. 2 is a front view of an operation panel of the copying apparatus.
第１図において、１はアナログ口をデジタル値に変換す
るＡ／Ｄ変換機能を有するＣＰＵ、２．３はそれぞれ内
部メモリ、４は濃度設定用のスライドボリュームであり
、第２図の濃度調整つまみ１０によって手動で操作され
る。な、ｕ′ａ度つまみ１０は第２図に示す複写装置の
操作パネル上に配置されており、第２図の上から下にス
ライドさせると画像濃度を濃くすることができ、最下端
まで下げると濃度調整モードが手動から自動に切り換わ
り、自動濃度調整モードランプ１１が点灯する。In Figure 1, 1 is a CPU with an A/D conversion function that converts analog values into digital values, 2 and 3 are internal memories, and 4 is a slide volume for density setting, and the density adjustment knob in Figure 2 is manually operated by 10. The u'a degree knob 10 is placed on the operation panel of the copying machine shown in Fig. 2, and by sliding it from the top to the bottom in Fig. 2, the image density can be increased, and it can be lowered to the lowest end. Then, the density adjustment mode switches from manual to automatic, and the automatic density adjustment mode lamp 11 lights up.
第１図において、５，６はそれぞれノイズ吸収用の抵抗
、コンデンサ、７はｃｐｕｉからのデジタル信号に応じ
て所定のバイアス電圧を現像器８に印加するバイアス回
路、９は原稿Ｓ度検出器である。In FIG. 1, 5 and 6 are resistors and capacitors for noise absorption, 7 is a bias circuit that applies a predetermined bias voltage to the developer 8 according to the digital signal from the CPU, and 9 is a document S degree detector. be.
次に第３図のフローチャートを用いて動作を説明する。Next, the operation will be explained using the flowchart shown in FIG.
図示しない電源スィッチを入れて複写装置を始動させる
と、濃度調整モードは濃度調整つまみ１０が第２図の操
作パネルの最下端に位置していないときは手動濃度調整
モードとなっている。このモードにおいて濃度調整つま
み１０により所望の濃度を設定すると（Ｆ−１＞、スラ
イドボリューム４から取り出される電圧がＣＰＵ１の端
子Ａに入力され（Ｆ−２）、その電圧値がＣＰＬＪｌで
Ａ／Ｄ変換される（Ｆ−３＞。このＡ／Ｄ変換後のデジ
タル値を、濃度調整つまみ１０が第２図の操作パネルの
最下端に設定されたときのスライドボリューム４からの
電圧のＡ／Ｄ変換されたデジタル値（モード切換値とし
て予め設定しておく）と比較しくＦ−４＞、両者が等し
ければ、自動濃度調整モードランプ１１が点灯し、それ
以侵は濃度調整モードが自動濃度調整モードに切り換わ
る（Ｆ−５）。その後ＣＰＵＩは原稿濃度検出器９から
の濃度情報に基づき、予め設定されたバイアス電圧信号
をバイアス回路７に出力し原稿濃度に応じたバイアス電
圧が現像器８に印加される。When a power switch (not shown) is turned on to start the copying apparatus, the density adjustment mode is set to manual density adjustment mode unless the density adjustment knob 10 is located at the bottom end of the operation panel shown in FIG. In this mode, when the desired density is set using the density adjustment knob 10 (F-1>, the voltage taken out from the slide volume 4 is input to terminal A of the CPU 1 (F-2), and the voltage value is applied to the A/D at CPLJl. The digital value after A/D conversion is converted (F-3>). Compare the converted digital value (preset as a mode switching value) with F-4>. If the two are equal, the automatic density adjustment mode lamp 11 will light up, and from then on, the density adjustment mode will change to automatic density adjustment. mode (F-5).The CPU then outputs a preset bias voltage signal to the bias circuit 7 based on the density information from the original density detector 9, and the bias voltage corresponding to the density of the original is applied to the developing device 8. is applied to
一方、ＡＩＤ変換後のデジタル値がモード切換値に等し
くなければ（Ｆ−４）、ＣＰＵＩからデジタル値に応じ
た濃度信号がバイアス回路７に送られ、所定のバイアス
電圧が現像器８に印加される（Ｆ−６）。On the other hand, if the digital value after AID conversion is not equal to the mode switching value (F-4), a density signal corresponding to the digital value is sent from the CPU to the bias circuit 7, and a predetermined bias voltage is applied to the developing device 8. (F-6).
（発明の効果）
以上説明したように、本発明においては、手動濃度調整
手段を所定位置に設定したとき、自動濃度調整モードに
切り換わるように構成したため、従来のようにモード切
換スイッチを設ける必要がなく、そのため操作パネル上
のスペースに余裕ができ部品コストも低減する。(Effects of the Invention) As explained above, in the present invention, when the manual density adjustment means is set at a predetermined position, the mode is switched to the automatic density adjustment mode, so there is no need to provide a mode changeover switch as in the conventional case. This frees up space on the operation panel and reduces component costs.
また本発明によれば、濃度調整モードを自動から手動に
切り換えるときには濃度調整つまみを所望の濃度位置へ
移動させるだけでよく、濃度調整モード切換えの際の操
作性が向上するという効果が得られる。Further, according to the present invention, when switching the density adjustment mode from automatic to manual, it is only necessary to move the density adjustment knob to the desired density position, and the effect of improving the operability when switching the density adjustment mode can be obtained.
第１図は本発明による複写装置の一実施例のブロック線
図、第２図は第１図の複写装置の操作パネルの正面図、
第３図は本発明による複写装置における濃度調整モード
の切換え動作を示すフローチャートである。
１・・・ＣＰＵ、２．３・・・内部メモリ、４・・・ス
ライドボリューム、１０・・・濃度調整つまみ、１１・
・・自動濃度調整モードランプ
特許出願人 小西六写真工業株式会社
代理人 弁理士 鈴 木 弘 男
ｊ１！１図
第２図FIG. 1 is a block diagram of an embodiment of the copying apparatus according to the present invention, FIG. 2 is a front view of the operation panel of the copying apparatus shown in FIG.
FIG. 3 is a flowchart showing the density adjustment mode switching operation in the copying apparatus according to the present invention. 1... CPU, 2.3... Internal memory, 4... Slide volume, 10... Density adjustment knob, 11...
...Automatic density adjustment mode lamp Patent applicant: Konishiroku Photo Industry Co., Ltd. Agent: Patent attorney Hiroshi Suzuki J1!1 Figure 2
Claims (1)
自動濃度調整モードと手動濃度調整手段による濃度調整
が可能な手動濃度調整モードとが選択的に切換え可能な
複写装置において、前記手動濃度調整手段を所定位置に
設定したとき自動濃度調整モードに切り換わることを特
徴とする複写装置。In a copying apparatus capable of selectively switching between an automatic density adjustment mode in which the density of a document is detected and the density of a copied image is automatically adjusted, and a manual density adjustment mode in which density adjustment is possible using a manual density adjustment means, the manual density A copying apparatus characterized in that the mode is switched to an automatic density adjustment mode when the adjusting means is set at a predetermined position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61026937A JPS62186280A (en) | 1986-02-12 | 1986-02-12 | Copying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61026937A JPS62186280A (en) | 1986-02-12 | 1986-02-12 | Copying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62186280A true JPS62186280A (en) | 1987-08-14 |
Family
ID=12207062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61026937A Pending JPS62186280A (en) | 1986-02-12 | 1986-02-12 | Copying device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62186280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7269371B2 (en) * | 2004-06-10 | 2007-09-11 | Lexmark International, Inc. | Imaging apparatus having interface device for print mode selection |
-
1986
- 1986-02-12 JP JP61026937A patent/JPS62186280A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7269371B2 (en) * | 2004-06-10 | 2007-09-11 | Lexmark International, Inc. | Imaging apparatus having interface device for print mode selection |
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