JPH02244064A - Image recording method - Google Patents
Image recording methodInfo
- Publication number
- JPH02244064A JPH02244064A JP1064261A JP6426189A JPH02244064A JP H02244064 A JPH02244064 A JP H02244064A JP 1064261 A JP1064261 A JP 1064261A JP 6426189 A JP6426189 A JP 6426189A JP H02244064 A JPH02244064 A JP H02244064A
- Authority
- JP
- Japan
- Prior art keywords
- charge
- photoreceptor
- unevenness
- medium
- image
- 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
- 238000000034 method Methods 0.000 title claims abstract description 16
- 108091008695 photoreceptors Proteins 0.000 claims description 34
- 230000014759 maintenance of location Effects 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 239000011800 void material Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000012212 insulator Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高感度、高解像度の画像記録方法に係わり、特
に印刷等に適した画像記録方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-sensitivity, high-resolution image recording method, and particularly to an image recording method suitable for printing and the like.
［従来の技術］
一般に、画像記録において、連続調画像を表現しようと
すると、網点て記録しないと出力が難しい場合がある０
例えばインクジェットプリンタ、溶融転写プリンタ等の
ハードコピー機器としてよく用いられる装置では、二値
表現、即ち黒、白の表現しかできず、写真調画像を出力
したい場合は網点化する必要がある。[Prior Art] Generally, in image recording, when trying to express a continuous tone image, it may be difficult to output it unless halftone dots are recorded.
For example, devices often used as hard copy devices such as inkjet printers and melt transfer printers can only perform binary expression, that is, black and white expression, and if it is desired to output a photographic image, it is necessary to halftone the image.
この網点化処理は、画像濃度に応じてピッチを変えずに
網点の大きさを変え、それにより連続調を表現するもの
であり、例えば第１５図に示すように、横軸を位置、縦
軸を画像濃度とした場合、ピッチを変えずに位置に応じ
て網点Ｐ、、Ｐ、・・・Ｐ、の大きさを変え、この網点
の大きさと画像濃度とを対応させて連続調を表現してい
る。This halftone processing changes the size of halftone dots without changing the pitch according to the image density, thereby expressing continuous tone. For example, as shown in Fig. 15, the horizontal axis is plotted as position, When the vertical axis is the image density, the size of the halftone dots P,, P,...P is changed according to the position without changing the pitch, and the size of the halftone dots is made to correspond to the image density. It expresses the tone.
ところで、ハードコピー機器として黒と白の表現しかで
きないプリンタが圧倒的に多く使われており、写真調画
像を出力したい場合には前述したように網点化を行う必
要があるが、家庭用、アマチェア用の用途等においては
せいぜいパーソナルコンピュータか、機器組込型のＣＰ
Ｕで網点形成をする必要がある。しかし、コンピュータ
にとっては網点形成に要するハード、ソフト面での負担
は極めて大きく、その結果コストアップとなってしまう
という問題があった。また、印刷の分野においては精細
な画像を得るために網点形成を行っているが、そのため
、カラースキャナーにおける網点化のための信号処理が
必要で、装置的、費用的に極めて負担が大きいという問
題があった。By the way, printers that can only express black and white are overwhelmingly used as hard copy devices, and if you want to output a photographic image, you need to do halftone printing as mentioned above, but for home use, For amateur use, at most a personal computer or a built-in CP
It is necessary to form halftone dots using U. However, the burden on the computer in terms of hardware and software required to form halftone dots is extremely large, resulting in a problem of increased costs. In addition, in the field of printing, halftone dot formation is performed to obtain fine images, but this requires signal processing for halftone dot formation in a color scanner, which is extremely burdensome in terms of equipment and cost. There was a problem.
本発明は上記問題点を解決するためのもので、網点形成
の負担を軽減し、か・つ連続調画像を容易に記録するこ
とができる画像記録方法を提供することを目的とする。The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an image recording method that can reduce the burden of halftone dot formation and that can easily record continuous tone images.
（！１８を解決するための手段〕
第１図は本発明の画像記録方法を説明するだめの図であ
る０図中、１は電荷保持媒体、１ａは絶縁層、１ｂは電
荷保持媒体１ｉ桟、ＩＣは絶縁層支持体、２ば感光体、
２ａは光導電層支持体、２ｂは感光体電極、２Ｃは光導
１を層、Ｅはｔ源である。(Means for solving !18) Figure 1 is a diagram for explaining the image recording method of the present invention. In Figure 0, 1 is a charge retention medium, 1a is an insulating layer, 1b is a charge retention medium 1i , IC is an insulating layer support, 2 is a photoreceptor,
2a is a photoconductive layer support, 2b is a photoreceptor electrode, 2C is a layer of light guide 1, and E is a t source.
第１図においては、宮光体２側から露光を行う態様であ
り、まず１ｍ厚のガラスからなる光導電層支持体２ａ上
に１０００人厚の１ＴＯからなる透明な感光体電極２ｂ
を形成し、この上に表面に凹凸を設けた１０μｍ程度の
光導電Ｎ２Ｃを形成して感光体２を構成している。この
感光体２に対して、１０μｍ程度の空隙を介して電荷保
持媒体１が配置される。！荷保持媒体１は１ｍ厚のガラ
スからなる絶縁層支持体ＩＣ上に１０００人厘のＡ２電
極１ｂを蒸着により形成し、この電極１ｂ上に１０μｍ
厚の絶縁層１ａを形成したものである。In FIG. 1, exposure is carried out from the photoconductor 2 side, and first, a transparent photoreceptor electrode 2b made of 1TO with a thickness of 1000 is placed on a photoconductive layer support 2a made of glass with a thickness of 1m.
The photoreceptor 2 is constructed by forming a photoconductive N2C of about 10 μm and having an uneven surface thereon. The charge holding medium 1 is placed with respect to the photoreceptor 2 with a gap of about 10 μm in between. ! The load holding medium 1 is made by forming an A2 electrode 1b with a thickness of 1000 by vapor deposition on an insulating layer support IC made of glass with a thickness of 1m, and a 10μm thick A2 electrode 1b on this electrode 1b.
A thick insulating layer 1a is formed.
このような構成において、ｔ′ｆｊＪ、已により電極２
ｂ、１ｂ間に電圧を印加する。暗所であれば光導電層２
Ｃは高抵抗体であるため、ｔｉ間には何の変化も生じな
い、感光体２側より光が入射すると、光が入射した部分
の光導電１ｉ２ｃはキャリアが発生すると共に導電性を
示し、発生したマイナス電荷７が電界に引かれて図のよ
うに光導電層２ｃの表面に移動し、空隙中で電離したプ
ラスイオンと結合して中和する。その結果、空隙中のマ
イナス電荷は電荷保持媒体の絶縁層ｌａ上に蓄積される
。In such a configuration, the electrode 2 is
A voltage is applied between b and 1b. If it is a dark place, photoconductive layer 2
Since C is a high resistance material, no change occurs between ti. When light enters from the photoreceptor 2 side, the photoconductor 1i2c in the part where the light enters generates carriers and exhibits conductivity. The generated negative charges 7 are attracted by the electric field and move to the surface of the photoconductive layer 2c as shown in the figure, where they combine with and neutralize the positive ions ionized in the voids. As a result, negative charges in the voids are accumulated on the insulating layer la of the charge retention medium.
このとき、光導電層２０表面には凹凸が形成されている
ので、絶縁層１ａとの放電間隙が凹凸状に変わって間隙
にかかる電圧が凹凸に応じて変化する。その結果凹凸パ
ターンにより変調を受けた放電パターンが形成されるこ
とになる。したがって、この凹凸パターンを網点状にし
ておけば、特別に網点処理を行うことなく網点画像が記
録できる。At this time, since the surface of the photoconductive layer 20 is uneven, the discharge gap with the insulating layer 1a becomes uneven, and the voltage applied to the gap changes depending on the unevenness. As a result, a discharge pattern modulated by the uneven pattern is formed. Therefore, if this concavo-convex pattern is formed into a halftone dot shape, a halftone image can be recorded without special halftone processing.
このように、単に感光体表面に凹凸を設けるだけの簡単
な構成で、単に露光するだけで電荷保持媒体が網点画像
として記憶してくれるため、従来のような網点形成のた
めの信号処理が不要となる。In this way, with a simple structure that simply provides unevenness on the surface of the photoreceptor, the charge retention medium memorizes it as a halftone image by simply exposing it to light. becomes unnecessary.
また、この網点は線状のものを用いてトラックを形成す
れば、データを記録したような場合にアクセスが容易に
なり、また、網点の大きさ、分布をランダムにすれば印
に１１における砂目スクリーンが得られる。In addition, if the track is formed using linear halftone dots, it will be easier to access when recording data, and if the size and distribution of the halftone dots are made random, the mark will be 11. A grained screen is obtained.
この記録方法は面状アナログ記録とした場合、銀塩写真
法と同様に高解像度が得られ、また形成される絶縁層ｌ
ａ上の表面電荷は空気環境に曝されるが、空気は良好な
絶縁性能を持っているので、明所、暗所に関係なく放電
せず長期間保存されることになる。When this recording method is used for planar analog recording, high resolution can be obtained similar to silver salt photography, and the insulating layer formed is
The surface charge on a is exposed to the air environment, but since air has good insulating properties, it will not discharge and will be stored for a long time regardless of whether it is in a bright or dark place.
この絶縁層ｌａ上の電荷保存期間は、絶縁体の性質によ
って定まり、空気の絶縁性以外に絶縁体の電荷捕捉特性
が影響する。前述の説明では電荷は表面電荷として説明
しているが、注入電荷は単に表面に蓄積させる場合もあ
り、また微視的には絶縁体表面付近内部に侵入し、その
物質の構造内に蓄積電荷がトランプされる場合もあるの
で長期間の保存が行われる。また電荷保持媒体の物理的
損傷や湿度が高い場合の放電等を防ぐために絶縁層１ａ
の表面を絶縁性フィルム等で覆って保存するようにして
もよい。The charge storage period on this insulating layer la is determined by the properties of the insulator, and is influenced by the charge trapping characteristics of the insulator in addition to the insulating property of air. In the above explanation, charge is explained as surface charge, but injected charge may simply accumulate on the surface, or microscopically it may penetrate inside near the surface of an insulator and cause charge accumulated within the structure of the material. Sometimes the cards are played, so they are stored for a long time. In addition, insulating layer 1a is used to prevent physical damage to the charge holding medium and discharge when humidity is high.
The surface may be covered with an insulating film or the like for storage.
第２図は感光体電極２ｂの表面に凹凸を設けた場合であ
る。この場合にも感光体１！橿と電荷保持媒体電極１ｂ
間の電圧が感光体電極表面の凹凸により、場所的に変化
するので、画像露光したときに記録画像が凹凸パターン
により変調され第１図の場合と同様に網点画像を記録す
ることができる。FIG. 2 shows a case where the surface of the photoreceptor electrode 2b is provided with irregularities. In this case too, photoreceptor 1! Rod and charge retention medium electrode 1b
Since the voltage between the photoreceptor electrodes varies depending on the location due to the unevenness of the surface of the photoreceptor electrode, the recorded image is modulated by the uneven pattern when imagewise exposed, and a halftone dot image can be recorded as in the case of FIG.
第３図は感光体電極２ｂ、光導電層２ｃの表面に凹凸を
設けた場合である。FIG. 3 shows a case in which irregularities are provided on the surfaces of the photoreceptor electrode 2b and the photoconductive layer 2c.
電極２ｂをスパッタ法等で形成して凹凸を設け、その上
に蒸着法等で光導電層２ｃを設ければ電極の凹凸に応じ
て光導ｔ＊にも凹凸を形成することができる。こうして
、第１図の場合と同様に網点画像を記録することができ
る。If the electrode 2b is formed by sputtering or the like to provide unevenness, and the photoconductive layer 2c is provided thereon by vapor deposition or the like, the light guide t* can also be formed with unevenness in accordance with the unevenness of the electrode. In this way, a halftone dot image can be recorded in the same way as in the case of FIG.
第４図は光導電層支持体２ａｚ感光体電極２ｂ、光導電
Ｎ２ｃの表面に凹凸を設けた場合、第５図は光導電層支
持体２ａ、感光体電極２ｂの表面に凹凸を設けた場合で
あり、例えば、ガラスのような支持体２ａにエツチング
等で凹凸を設ければ、図のように電極、光導電層の凹凸
を容易に形成することができ、それぞれ第１図の場合と
同様、露光するだけで網点画像を記録することができる
。Fig. 4 shows a case where unevenness is provided on the surface of the photoconductive layer support 2az photoreceptor electrode 2b and photoconductive N2c, and Fig. 5 shows a case where unevenness is provided on the surface of the photoconductive layer support 2a and photoreceptor electrode 2b. For example, if the support 2a, such as glass, is made uneven by etching or the like, it is possible to easily form the electrodes and the photoconductive layer with unevenness as shown in the figure. , halftone images can be recorded simply by exposure.
ところで、放電間隙は感光体と電荷保持媒体との距離で
あるので、どらち側に凹凸を設けても作用効果は同じで
ある。そこで、第６図〜第１０図により電荷保持媒体側
に凹凸を設けた場合について説明する。Incidentally, since the discharge gap is the distance between the photoreceptor and the charge holding medium, the effect is the same no matter which side the unevenness is provided on. Therefore, the case where the unevenness is provided on the charge retention medium side will be explained with reference to FIGS. 6 to 10.
第６図は電荷保持媒体電極１ｂの表面に凹凸を設けた場
合、第７図は絶縁層１ａの表面に凹凸を設けた場合、第
８図は電荷保持媒体電極１ｂの表面、および絶縁Ｊｉ
１ ａの表面に凹凸を設けた場合、第９図は絶縁層支持
体１ｃの表面、電荷保持媒体量ｉ１ｂの表面、絶縁層１
ａの表面に凹凸を設けた場合、第１０図は絶縁層支持体
１ｃの表面、電荷保持媒体電極１ｂの表面の表面に凹凸
を設けた場合で、この場合も第１図の場合と同様に露光
と同時に網点画像を記録することができる。ただし、電
荷保持媒体側に凹凸を設ける場合には、記録した潜像の
電位を読み取るときに読み取りヘッドと電荷保持媒体表
面との間の距離が変化するとその影響が読み取り電位に
影響してくるので、第６図、または第１０図に示すよう
に、絶縁層表面１ａには凹凸を設けず、電荷保持媒体電
極１ｂに凹凸を設けることが望ましい。FIG. 6 shows the case where the surface of the charge holding medium electrode 1b is provided with unevenness, FIG. 7 shows the case where the surface of the insulating layer 1a is provided with unevenness, and FIG.
When unevenness is provided on the surface of 1a, FIG. 9 shows the surface of the insulating layer support 1c, the surface of the charge holding medium amount i1b, and the
FIG. 10 shows a case in which unevenness is provided on the surface of the insulating layer support 1c and the surface of the charge holding medium electrode 1b, and in this case as well, as in the case of FIG. A halftone image can be recorded simultaneously with exposure. However, if unevenness is provided on the charge retention medium side, if the distance between the reading head and the surface of the charge retention medium changes when reading the potential of the recorded latent image, the effect will affect the read potential. , FIG. 6, or FIG. 10, it is preferable that the insulating layer surface 1a is not provided with any unevenness, but the charge retention medium electrode 1b is provided with unevenness.
第１１図は感光体側および電荷保持媒体側に凹凸を設け
た場合で、凸部骨同士、開部分同士が対向するように配
置すれば、凹凸の差の影響をより大きくできるので、片
側だけに凹凸を設ける場合に比べ、それぞれの凹凸の高
さが小さくても同様の効果が得られ、また凸部骨と開部
分とが対向するように位置をずらせることにより、凹凸
パターンの間隔を半分にすることができ、網点のピッチ
をさらに精細化することができる。また、感光体と電荷
保持媒体との凹凸を線状に形成し、感光体と電荷保持媒
体とを適度相対的に回転させ、両者の角度を適宜変えて
対向配置することによりスクリーン角度を変えた網点を
形成することができ、さらに一方を同心円状、他方を放
射線状の凹凸を形成する等、様々な組み合わせによる網
点形成をすることができる。もちろん、第１１図の場合
に感光体電極２ｂ、絶縁層１ａに凹凸を設けるようにし
てもよいことをもちろんである。Figure 11 shows the case where unevenness is provided on the photoreceptor side and the charge holding medium side.If the protruding bones and the open parts are arranged so that they face each other, the effect of the difference in unevenness can be made larger, so it is possible to Compared to the case of providing unevenness, the same effect can be obtained even if the height of each unevenness is smaller, and by shifting the position so that the protruding bone and the open part face each other, the interval between the uneven patterns can be reduced by half. The pitch of the halftone dots can be further refined. In addition, the screen angle can be changed by forming unevenness between the photoconductor and the charge retention medium in a linear manner, rotating the photoconductor and the charge retention medium moderately relative to each other, and arranging them facing each other by changing the angle of the two appropriately. It is possible to form halftone dots, and it is also possible to form halftone dots in various combinations, such as forming concentric irregularities on one side and radial irregularities on the other. Of course, in the case of FIG. 11, the photoreceptor electrode 2b and the insulating layer 1a may be provided with irregularities.
第１２図は感光体または電荷保持媒体の表面に凹凸を設
け、それらを密着させて画像露光を行う例を示す図であ
る。FIG. 12 is a diagram showing an example in which unevenness is provided on the surface of a photoreceptor or a charge holding medium, and image exposure is performed by bringing them into close contact.
感光体と電荷保持媒体のギャップは非常に狭く、それを
安定に保持しないとギヤツプのむらによる電荷量のむら
が発生してしまう、そこで、第１２図に示すように感光
体表面、または電荷保持媒体表面に凹凸を設けて、それ
らを密着させることにより放電のための空間を確保する
ことができるので、安定した網点画像を記録することが
できる。The gap between the photoreceptor and the charge retention medium is very narrow, and if it is not maintained stably, unevenness in the amount of charge will occur due to unevenness in the gap. By providing unevenness on the surface and bringing them into close contact with each other, a space for discharge can be secured, so that a stable halftone dot image can be recorded.
このような接触式とした場合には、感光体電極２ｂ側か
ら光導電１ｗ２ｃの露光部に注入された正または負の電
荷は電荷保持媒体１側の電極１ｂに引かれて光導電層２
ｃを通過し、絶縁層１８面に達した所で電荷移動が停止
し、その部位に注入電荷が蓄積される。そして、感光体
２と電荷保持媒体１とを分離すると、絶縁層１ａは電荷
を蓄積したままの状態で分離される。In the case of such a contact type, positive or negative charges injected from the photoreceptor electrode 2b side into the exposed portion of the photoconductive layer 1w2c are attracted to the electrode 1b on the charge retention medium 1 side, and the photoconductive layer 2
The charge movement stops when the charge passes through the insulating layer 18 and reaches the surface of the insulating layer 18, and the injected charges are accumulated at that location. Then, when the photoreceptor 2 and the charge holding medium 1 are separated, the insulating layer 1a is separated with the charges stored therein.
第１２図の例では、放電ギャップのむらを表面の凹凸の
加工精度で実現することができるので、高精度化できる
共とに、記録プロセスの操作上における不安定要因を除
去することができる。なお、凹凸を設けた表面を密着さ
せる代わりに感光体あるいは電荷保持媒体の端部に薄い
スペーサーを設け、そのスペーサ一部分を密着させるよ
うにしても、放電ギャップのむらを無くすことができる
。In the example shown in FIG. 12, the unevenness of the discharge gap can be realized by the machining accuracy of the surface irregularities, so it is possible to improve the accuracy and eliminate operational instability factors in the recording process. Note that instead of bringing the uneven surfaces into close contact, a thin spacer may be provided at the end of the photoreceptor or the charge holding medium, and a portion of the spacer may be brought into close contact with each other to eliminate unevenness in the discharge gap.
第１３図は網点を形成するスクリーン画像の例を示す図
で、（ａ）は線状に形成したもので、このようにすれば
トラックを形成して、データ記録が可能となる。また（
ｂ）はスクリーン角度を直交させた場合、（Ｃ）は同心
円状のスクリーンを形成した場合である。なお、（ｂ）
の場合にスクリーン角度を小さくするとモアレのピッチ
が太きくなり、その結果絵柄が小さい場合は問題になら
ないが、大きな画像にした場合色合のむらが発生したり
、また複数枚印刷したとき、微妙な位置のずれが色合の
ずれとなって生ずるのでモアレのピッチが短くなるスク
リーン角度に選ぶ必要がある。FIG. 13 is a diagram showing an example of a screen image forming halftone dots, in which (a) is formed in a line shape, and by doing so, tracks can be formed and data can be recorded. Also(
(b) is a case where the screen angles are orthogonal, and (C) is a case where concentric screens are formed. Furthermore, (b)
In this case, if you reduce the screen angle, the pitch of the moiré will become thicker, and as a result, this will not be a problem if the image is small, but if you make a large image, uneven coloring may occur, or if you print multiple copies, the pitch of the moiré will become thicker. The screen angle must be selected to shorten the pitch of the moiré, since the shift in color results in a shift in color tone.
本発明の画像記録方法は、感光体あるいは電荷保持媒体
の少な（とも一方の導電性層および／または表面に凹凸
を設けることにより、両者の間隙にかかる電圧を凹凸状
に変化させ、凹凸に応じた放電パターンを変調すること
により露光と同時に網点画像の記録を行うことができる
ので、網点化のための特別な電気的処理を行う必要がな
く、安価に、容易に網点画像を記録することが可能とな
る。In the image recording method of the present invention, by providing unevenness on the conductive layer and/or surface of one of the photoconductors or the charge holding medium, the voltage applied to the gap between the two is changed in an uneven manner, and By modulating the discharge pattern, halftone images can be recorded at the same time as exposure, so there is no need for special electrical processing for halftone formation, making it possible to easily record halftone images at low cost. It becomes possible to do so.
第１４図は本発明の一実施例を示す図で、図中３１ａは
光導電層、３１ｂは導電性層、３１ｃはガラスである。FIG. 14 is a diagram showing an embodiment of the present invention, in which 31a is a photoconductive layer, 31b is a conductive layer, and 31c is glass.
厚さ１■の青板ガラスに一辺の長さが１７０μｍの正方
形からなる一松模様状のレジストインキパターンをスク
リーン印刷法で形成した。端面および裏面もレジストイ
ンキで覆った０次に、フッ化アンモニウムＬｏｇ、硝酸
５０ｍｆ、水５０ｍ１を混合し、エツチング液を準備し
、ガラスをエツチング液に浸漬してエツチングした０次
に水洗後レジストを剥離し、エツチング深さを測定した
ところ２μｍであった。このエツチング面にｒＴＯをス
パッタで約５５０人形成し、表面導電層を設けた。さら
にセレンを真空蒸着で約４０．ｃｒｍ形成し、第１４図
に示すように光導電性層表面に凹凸を形成した。A pine-shaped resist ink pattern consisting of a square with a side length of 170 μm was formed on a 1-inch-thick blue plate glass by screen printing. The end and back surfaces were also covered with resist ink. Next, prepare an etching solution by mixing ammonium fluoride Log, 50 mf of nitric acid, and 50 ml of water, and immerse the glass in the etching solution for etching. After washing with water, remove the resist. When the film was peeled off and the etching depth was measured, it was 2 μm. Approximately 550 layers of rTO were formed on this etched surface by sputtering to provide a surface conductive layer. Furthermore, approximately 40% selenium was applied by vacuum evaporation. CRM was formed to form irregularities on the surface of the photoconductive layer as shown in FIG.
一方厚さ１閣の青板ガラスにアルミニウムを真空蒸着で
１ｏｏｏ人の厚さに形成し、その上に東芝シリコン（株
）製シリコン樹脂ＡＳＲ−１４４に硬化触媒としてＣＲ
１２を重量％添加し、スピンナーにて回転塗布した。さ
らにオープンにて１５０℃、−時間加熱して乾燥固化さ
せた。シリコン樹脂層の厚さは約８μｍであり、こうし
て電荷保持媒体を作製した。On the other hand, aluminum was vacuum-deposited on blue plate glass with a thickness of 1 mm to a thickness of 100 mm, and on top of that aluminum was coated with silicone resin ASR-144 manufactured by Toshiba Silicon Co., Ltd. as a curing catalyst.
12 was added in weight percent, and spin coating was performed using a spinner. Furthermore, it was dried and solidified by heating at 150° C. for - hours in an open environment. The thickness of the silicone resin layer was about 8 μm, and thus a charge retention medium was prepared.
このような感光体と電荷保持媒体間に電圧を印加し、画
像露光を行ったところ、電荷保持媒体上に網点画像状の
静電荷パターンが形成された。When a voltage was applied between such a photoreceptor and a charge holding medium and image exposure was performed, an electrostatic charge pattern in the form of a halftone image was formed on the charge holding medium.
以上のように本発明によれば、感光体、電荷保持媒体の
少なくとも一方の表面、導電性層等に凹凸を形成するこ
とにより網点形成のための電気的信号処理を行うことな
く、露光と同時に網点画像を記録することができる。さ
らに凹凸パターンを、例えば網点状もしくはランダムパ
ターンにしておくことにより、電荷パターンを網点化や
砂目スクリーン化等ができるため、安価に連続調画像の
ハードコピーを作ることができ、さらに凹凸パターンを
線状にすればトラックが形成できるので、電荷パターン
情報の読み出しを効率的に行うことも可能となる。As described above, according to the present invention, by forming irregularities on the surface of at least one of the photoreceptor and the charge holding medium, the conductive layer, etc., exposure can be performed without performing electrical signal processing for halftone dot formation. A halftone image can be recorded at the same time. Furthermore, by making the uneven pattern into a halftone or random pattern, the charge pattern can be made into halftone dots or a grain screen, so it is possible to make hard copies of continuous tone images at low cost. Since tracks can be formed by making the pattern linear, it is also possible to read charge pattern information efficiently.
さらに感光体または電荷保持媒体の表面に凹凸を設け、
両者を密着させて露光を行うことにより凹凸により放電
のための空間が確保できるので、ギャップのむらを無く
し、記録プロセスの操作上の不安定要因を除去すること
が可能となる。Furthermore, by providing unevenness on the surface of the photoreceptor or charge holding medium,
By exposing the two in close contact with each other, a space for discharge can be secured due to the unevenness, thereby making it possible to eliminate irregularities in the gap and to eliminate operational instability factors in the recording process.
第１図は本発明の画像記録方法を説明するための図、第
２図は感光体電極の表面に凹凸を設けた例を示す図、第
３図は感光体電極、光導電層の表面に凹凸を設けた例を
示す図、第４図は光導電層支持体、感光体電極、光導電
層の表面に凹凸を設けた例を示す図、第５図は光導電層
支持体、感光体電極の表面に凹凸を設けた例を示す図、
第６図〜第１０図は電荷保持媒体側に凹凸を設けた例を
示す図、第１１図は感光体側および電荷保持媒体側に凹
凸を設けた例を示す図、第１２図は密着画像露光を行う
例を示す図、第１３図は凹凸によるスクリーン画像の例
を示す図、第１４図は凹凸形成方法を説明するための図
、第１５図は網点画像を説明するための図である。
１・・・電荷保持媒体、ｌａ・・・絶縁層、ｌｂ・・・
電荷保持媒体電極、１ｃ・・・絶縁層支持体、２・・・
感光体、２ａ・・・光導電層支持体、２ｂ・・・感光体
電極、２ｃ・・・光導電層、Ｅ・・・電源。
第４図
第５図
第６図
第７図
第８図
第９図
１）、Ω
−６：
第１０図
第１１図
第１２図FIG. 1 is a diagram for explaining the image recording method of the present invention, FIG. 2 is a diagram showing an example in which unevenness is provided on the surface of the photoconductor electrode, and FIG. 3 is a diagram for explaining the surface of the photoconductor electrode and the photoconductive layer. Figure 4 shows an example in which unevenness is provided on the surface of the photoconductive layer support, photoreceptor electrode, and photoconductive layer; Figure 5 shows the photoconductive layer support and photoreceptor. A diagram showing an example of providing unevenness on the surface of the electrode,
Figures 6 to 10 are diagrams showing an example in which irregularities are provided on the charge retention medium side, Figure 11 is a diagram showing an example in which irregularities are provided on the photoreceptor side and the charge retention medium side, and Figure 12 is a contact image exposure FIG. 13 is a diagram showing an example of a screen image created by unevenness, FIG. 14 is a diagram for explaining a method of forming irregularities, and FIG. 15 is a diagram for explaining a halftone image. . 1... Charge retention medium, la... Insulating layer, lb...
Charge retention medium electrode, 1c...Insulating layer support, 2...
Photoreceptor, 2a... Photoconductive layer support, 2b... Photoconductor electrode, 2c... Photoconductive layer, E... Power source. Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 1), Ω -6: Figure 10 Figure 11 Figure 12
Claims (2)
成した感光体と、導電性層を介在させて支持体上に絶縁
層を形成した電荷保持媒体とを対向配置し、感光体及び
電荷保持媒体の導電性層間に電圧を印加しながら画像露
光を行って感光体と電荷保持媒体間に放電を生じさせ、
電荷保持媒体の表面に画像状に電荷を蓄積させる画像記
録方法において、感光体と電荷保持媒体の少なくとも一
方の対向表面、および／または導電性層表面に凹凸を設
けたことを特徴とする画像記録方法。(1) A photoreceptor having a photoconductive layer formed on a support with a conductive layer interposed therebetween and a charge retention medium having an insulating layer formed on the support with a conductive layer interposed therebetween are arranged facing each other, Performing image exposure while applying a voltage between the conductive layer of the photoconductor and the charge retention medium to generate a discharge between the photoconductor and the charge retention medium;
An image recording method for accumulating charges in an image form on the surface of a charge-retaining medium, characterized in that unevenness is provided on the facing surface of at least one of the photoreceptor and the charge-retaining medium, and/or the surface of the conductive layer. Method.
成した感光体と、導電性層を介在させて支持体上に絶縁
層を形成した電荷保持媒体とを対向配置し、感光体及び
電荷保持媒体の導電性層間に電圧を印加しながら画像露
光を行って感光体と電荷保持媒体間に放電を生じさせ、
電荷保持媒体の表面に画像状に電荷を蓄積させる画像記
録方法において、感光体の電荷保持媒体の少なくとも一
方の対向表面に凹凸を設け、感光体と電荷保持媒体とを
密着させて画像露光し、凹凸によりできる空間を放電間
隙として使用することを特徴とする画像記録方法。(2) A photoreceptor having a photoconductive layer formed on a support with a conductive layer interposed therebetween and a charge retention medium having an insulating layer formed on the support with a conductive layer interposed therebetween are arranged facing each other, Performing image exposure while applying a voltage between the conductive layer of the photoconductor and the charge retention medium to generate a discharge between the photoconductor and the charge retention medium;
In an image recording method in which charge is accumulated in an image-like manner on the surface of a charge-retaining medium, unevenness is provided on at least one opposing surface of the charge-retaining medium of a photoreceptor, the photoreceptor and the charge-retaining medium are brought into close contact, and image exposure is performed, An image recording method characterized by using a space formed by unevenness as a discharge gap.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1064261A JPH02244064A (en) | 1989-03-16 | 1989-03-16 | Image recording method |
| ES90904688T ES2090127T3 (en) | 1989-03-16 | 1990-03-15 | IMAGE RECORDING METHOD. |
| EP90904688A EP0425683B1 (en) | 1989-03-16 | 1990-03-15 | Image recording method |
| DE69027398T DE69027398T2 (en) | 1989-03-16 | 1990-03-15 | IMAGE RECORDING METHOD |
| CA002028813A CA2028813A1 (en) | 1989-03-16 | 1990-03-15 | Image recording method |
| PCT/JP1990/000338 WO1990010895A1 (en) | 1989-03-16 | 1990-03-15 | Image recording method |
| US08/556,011 US5665497A (en) | 1989-03-16 | 1995-11-09 | Image recording method |
| US08/859,039 US5981122A (en) | 1989-03-16 | 1997-05-20 | Image recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1064261A JPH02244064A (en) | 1989-03-16 | 1989-03-16 | Image recording method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02244064A true JPH02244064A (en) | 1990-09-28 |
Family
ID=13253077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1064261A Pending JPH02244064A (en) | 1989-03-16 | 1989-03-16 | Image recording method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02244064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5903296A (en) * | 1993-04-26 | 1999-05-11 | Dai Nippon Printing Co., Ltd. | Photoelectric sensor, information recording system and information recording and reproducing method |
-
1989
- 1989-03-16 JP JP1064261A patent/JPH02244064A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5903296A (en) * | 1993-04-26 | 1999-05-11 | Dai Nippon Printing Co., Ltd. | Photoelectric sensor, information recording system and information recording and reproducing method |
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