JPH02167570A - Color electrostatic recorder - Google Patents

Abstract

PURPOSE:To align overlapped pictures at every color by detecting a changed temperature and humidity by a temperature/humidity detector provided in contact with or in the vicinity of a recording medium, adjusting the temperature amount of a temperature adjuster according to the quantity comparing temperatures and humidities, with the expansion/contraction information of the recording medium. CONSTITUTION:The subject recorder is provided with the temperature/humidity detector 17 which detects the ambient temperature and humidity of an electrostatic recording paper 1 right before it is recorded by a multi-needle electrode recoding head in contact with or in the vicinity of the recording medium; moreover, the temperature adjuster 18 and an expansion/contraction correcting part 19 are provided on the recorder. At this point, a comparing part compares a signal obtained from the temperature/humidity detecting part 17 with a reference signal and judges them, whereby the expansion/contraction quantity in the direction orthogonal to the feeding direction of the electrostatic recording paper 1 is calculated. According to the calculated expansion/contraction quantity temperature is adjusted by operating the temperature adjuster 18. Therefore, the (n-1)th-picture and the nth-picture can be accurately aligned.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、同一記録媒体上に連続して異なる色の画像を
重ねて記録しカラー画像を得るカラー静電記録装置に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a color electrostatic recording apparatus that continuously records images of different colors in an overlapping manner on the same recording medium to obtain a color image.

従来の技術 従来のカラー静電記録装置の概略構成図を第４図に示す
。５１は静電記録紙、５２．５３は静電記録紙５１を往
復運動させるために巻き取り・巻き出しを行なうための
ワインダーとりワインダー、５５は静電記録紙５↓の通
路に沿って配置された多針電極記録ヘッド、５４は静電
記録紙５１と多針電極記録ヘッド５５との間で一定の接
触を保つための押えローラ、５６は除電バー、５７゜５
８．５９．６０は異なる色の現像剤が供給される現像器
、６１は使用剤の現像剤を回収するスクイーズ、６２．
６３は静電記録紙をグリップし往復運動させるための押
圧ローラと駆動ローラ、６４は正逆転可能な駆動源であ
る。2. Description of the Related Art A schematic diagram of a conventional color electrostatic recording apparatus is shown in FIG. 51 is an electrostatic recording paper, 52 and 53 are winders and winders for winding and unwinding the electrostatic recording paper 51 in order to make it reciprocate, and 55 is arranged along the path of the electrostatic recording paper 5↓. 54 is a presser roller for maintaining constant contact between the electrostatic recording paper 51 and the multi-needle electrode recording head 55; 56 is a static elimination bar; 57°5;
8.59.60 is a developing device to which developers of different colors are supplied; 61 is a squeeze for recovering used developer; 62.
63 is a pressure roller and a drive roller for gripping and reciprocating the electrostatic recording paper, and 64 is a drive source capable of forward and reverse rotation.

次に、この構成にお番ツる動作について説明する。Next, an explanation will be given of the operation suitable for this configuration.

静電記録紙５１は駆動ローラ６２によって矢印へで示す
方向に搬送される。このとき多針電極記録ヘッド５５に
より静電記録紙５１の有効画面内に黒画像の静電潜像が
形成され、黒の画像剤が供給されている現像器５７によ
って静電吸引を行なって顕像化された後、スクイーズ６
１で使用剤の現像剤を回収して定着させる。黒画像が記
録された静電記録紙５１はワインダ−５３で巻き取られ
、黒画像情報の記録終了後、駆動源６４を反転させてリ
ワインダ−５２によって矢印Ｂて示す方向に静電記録紙
５１の巻き戻しを行ない、巻き戻し終了後第２色目、第
３色目、第４色目、例えばシアン、マゼンタ、イエロー
の画像を上記の第１色目の方法と同様にして重ね合わせ
４色（黒・シアン・マゼンタ・イエロー）が重ね合わさ
れたカラー画像を得ることができる。The electrostatic recording paper 51 is conveyed by a drive roller 62 in the direction shown by the arrow. At this time, an electrostatic latent image of a black image is formed within the effective screen of the electrostatic recording paper 51 by the multi-needle electrode recording head 55, and the developing device 57 supplied with black image agent performs electrostatic suction and is visualized. After being imaged, squeeze 6
In step 1, the used developer is collected and fixed. The electrostatic recording paper 51 on which a black image has been recorded is wound up by a winder 53, and after the black image information has been recorded, the driving source 64 is reversed and the electrostatic recording paper 51 is moved in the direction shown by arrow B by the rewinder 52. After rewinding, the second, third, and fourth color images, such as cyan, magenta, and yellow, are superimposed in the same way as the first color method described above.・Magenta/yellow) can be superimposed to produce a color image.

発明が解決しようとする課題 しかし、かかる構成によれば、第ｎ色目の静電現像が行
なわれた後、雰囲気温度及び湿度に変化が生じて静電記
録紙に伸縮が発生した場合、静電記録紙上に形成された
画像が伸縮するため第ｎ色目以降において画像の正確な
重ね合わせができず、色ずれが生しるという課題があっ
た。Problems to be Solved by the Invention However, with this configuration, if the atmospheric temperature and humidity change and the electrostatic recording paper expands or contracts after electrostatic development of the nth color, the electrostatic Since the image formed on the recording paper expands and contracts, it is not possible to accurately superimpose the images after the n-th color, resulting in color misregistration.

そこで、本発明は色ずれの生しないカラー静電記録装置
を提供することを目的とする。Therefore, an object of the present invention is to provide a color electrostatic recording device that does not cause color shift.

課題を解決するための手段 本発明はこの目的を達成するために、温度及び湿度を検
出する検出手段を記録媒体に接触又は近傍に設け、この
検出手段により得られる情報により、記録媒体の伸縮量
を一定に保つ温度調節手段を設けて重ね合わせの記録を
行う様にするという構成を備えたものである。Means for Solving the Problems In order to achieve this object, the present invention provides a detection means for detecting temperature and humidity in contact with or near a recording medium, and uses information obtained by this detection means to determine the amount of expansion and contraction of the recording medium. The system is equipped with a temperature control means for keeping the temperature constant and records the overlapping.

作　　　用 本発明は上述の構成によって、各色の記録の途中におい
て雰囲気温度及び湿度に変化が生して記録媒体に伸縮が
発生しようとしても、記録媒体に接触又は近傍に設けら
れた温・湿度検出器で変化後の温度及び湿度を検出し、
内部に設けられた温度及び湿度と記録媒体の伸縮情報と
の比較を行ない、その比較量に応じて温度調節器の温度
量を調節することにより記録媒体の伸縮量を一定に保つ
ことができるため、各色毎の重ね合わせ画像の位置合わ
せが可能となる。Effect: With the above-described configuration, the present invention can detect temperature and humidity detection provided in contact with or near the recording medium, even if the recording medium is likely to expand or contract due to a change in ambient temperature and humidity during recording of each color. Detect the temperature and humidity after the change,
This is because the amount of expansion and contraction of the recording medium can be kept constant by comparing the internal temperature and humidity with the expansion and contraction information of the recording medium and adjusting the temperature of the temperature controller according to the comparison amount. , it becomes possible to align the superimposed images for each color.

実施例 以下、本発明の好適な実施例について第１図〜第３図を
参照して説明する。EXAMPLES Hereinafter, preferred examples of the present invention will be described with reference to FIGS. 1 to 3.

第１図は本発明の一実施例によるカラー静電記録装置の
概略構成を示すものである。第１図において、１は静電
記録紙、２及び３は静電記録紙を往復運動させるために
巻き取り、巻き出しを行なうためのワインダーとりワイ
ンダー、５は静電記録紙１の通路に沿って配置された多
針電極記録ヘッドである。４は静電記録紙１と多針電極
記録ヘッド５との接触を保つための押えローラ、６は除
電バー、？、８，９．１０はそれぞれ異なる色の現像剤
が供給される現像器、１１は使用済の現像剤を回収する
スクイーズ、↓２及び１３は静電記録紙をグリップして
往復運動させるための押圧ローラと駆動ローラ、１４は
正逆転可能な駆動源である。１７は静電記録紙に接触又
は近傍に設けられ、多針電極記録ヘッドで記録される直
前の静電記録紙１の雰囲気温度・湿度を検出するための
温・湿度検出器、１８は温度調節器である。１９は伸縮
補正部である。FIG. 1 shows a schematic configuration of a color electrostatic recording apparatus according to an embodiment of the present invention. In FIG. 1, 1 is an electrostatic recording paper, 2 and 3 are winders and winders for winding and unwinding the electrostatic recording paper to make it reciprocate, and 5 is a winder for winding the electrostatic recording paper along the path of the electrostatic recording paper 1. This is a multi-needle electrode recording head arranged in a central location. 4 is a presser roller for maintaining contact between the electrostatic recording paper 1 and the multi-needle electrode recording head 5; 6 is a static elimination bar; , 8, 9, and 10 are developing devices each supplied with developer of a different color. 11 is a squeeze for collecting used developer. ↓ 2 and 13 are for gripping the electrostatic recording paper and making it reciprocate. The pressure roller and the drive roller 14 are drive sources capable of forward and reverse rotation. 17 is a temperature/humidity detector which is provided in contact with or near the electrostatic recording paper and detects the ambient temperature and humidity of the electrostatic recording paper 1 immediately before being recorded by the multi-needle electrode recording head, and 18 is a temperature controller. It is a vessel. 19 is an expansion/contraction correction section.

静電記録紙Ｉは矢印Ａで示す方向に駆動ローラ及び押圧
ｌコーラ１３によって搬送され、その間に多針電極記録
ヘッド５と現像器、例えば黒の現像剤が供給されている
現像器７によって任意の黒画像情報が記録される。この
とき、静電記録紙１の搬送に伴ってワインダ−３で巻き
取ると同時にリワインダ−２ではこれに同期して巻き出
しを行う。The electrostatic recording paper I is conveyed in the direction shown by arrow A by a drive roller and a pressure roller 13, and in the meantime, a multi-needle electrode recording head 5 and a developer, for example, a developer 7 supplied with a black developer, are used to optionally carry out the electrostatic recording paper I. black image information is recorded. At this time, as the electrostatic recording paper 1 is transported, it is wound up by the winder 3 and at the same time, the rewinder 2 unwinds it in synchronization with this.

全ての黒画像情報の記録が終了した後、駆動源１４を反
転させて静電記録紙■を矢印Ｂで示す方向に駆動ローラ
１３によって搬送させる。このときは記録時とは逆に、
リワインダ−２で巻き取ると同時にワインダー３で巻き
出しを行う。静電記録紙１を所定の位置まで巻き戻した
後、再び矢印Ａで示す方向に搬送させつつ記録し矢印Ｂ
で示す方向に巻き戻す動作をシアン、マゼンタ、イエロ
ーの各色について行なうことにより順次異なる色の画像
が重ね合わせて形成され、最終的に４色が重ね合わされ
たカラー画像となる。After all the black image information has been recorded, the drive source 14 is reversed, and the electrostatic recording paper 2 is conveyed by the drive roller 13 in the direction shown by arrow B. At this time, contrary to when recording,
At the same time as the rewinder 2 winds up, the winder 3 unwinds. After rewinding the electrostatic recording paper 1 to a predetermined position, recording is performed while being conveyed again in the direction shown by arrow A.
By performing the unwinding operation in the direction indicated by for each color of cyan, magenta, and yellow, images of different colors are successively superimposed to form a color image in which four colors are superimposed.

以下、各色の画像を重ね合わせる時の位置合わせ動作を
第２図〜第３図を参照して詳細に説明する。静電記録紙
１が第１図で矢印Ａで示す方向に搬送され多針電極記録
ヘッド５にて記録される前に、静電記録紙１に接触又は
近傍に設けられた温・湿度検出器１７にてこのときの静
電記録紙１の雰囲気温・湿度を検出する。温・湿度検出
器１７には温・湿度センサを用い、温・湿度検出回路２
０からの出力信号は伸縮補正部１９の比較回路２］へ送
られる。比較回路２１では温・湿度検出回路２０からの
温・湿度出力信号と基準信号回路２２の温・湿度出力信
号との比較を行い、上記検出時条件下で想定される静電
記録１の伸縮量を判定する。基準信号回路２２には第３
図に示すような温・湿度と静電記録紙１の相関データが
メモノされていて、例えば雰囲気湿度５０％で雰囲気温
度が２０℃のときの静電記録紙１の伸縮量は雰囲気湿度
５０％、雰囲気温度−１０℃を基準として約０．６％の
伸びであると比較回路２１にて判定する。比較回路２１
においては常に温・湿度検出期間に相当するある任意時
間逆上った前情報との比較をある任意時間毎に行い温度
補正量を決定する。今、例えば前情報（ｎ−１回目の画
像記録時〉が雰囲気湿度が５０％、雰囲気湿度２０℃で
前情報から任意時間後の新情報（ｎ回目の画像記録時）
が雰囲気湿度が５０％、雰囲気温度が２５℃の場合、静
電記録紙１の伸縮量は基準値に対して０．５８％の伸び
から０．６３％の伸びに変化することが想定される。そ
こで静電記録紙１の伸びを０．５８％に保つためには雰
囲気温度を２０℃にしなければならないと判定する。比
較回路２１からの出力は次に温度調整回路２３に送られ
る。温度調整回路２３は多針電極ヘッド５近傍の雰囲気
温度を可変させるためのものであり、温度調節器１８は
、例えば静電記録紙１の搬送方向に沿って直角方向に設
けたカイトローラの内側に棒状ヒータを内蔵したヒート
ローラで構成される。Hereinafter, the positioning operation when superimposing images of each color will be explained in detail with reference to FIGS. 2 and 3. Before the electrostatic recording paper 1 is conveyed in the direction shown by arrow A in FIG. At step 17, the ambient temperature and humidity of the electrostatic recording paper 1 at this time are detected. A temperature/humidity sensor is used as the temperature/humidity detector 17, and the temperature/humidity detection circuit 2
The output signal from 0 is sent to the comparator circuit 2 of the expansion/contraction correction section 19. The comparison circuit 21 compares the temperature/humidity output signal from the temperature/humidity detection circuit 20 with the temperature/humidity output signal from the reference signal circuit 22, and determines the amount of expansion/contraction of the electrostatic record 1 assumed under the above detection conditions. Determine. The reference signal circuit 22 includes a third
Correlation data between temperature/humidity and the electrostatic recording paper 1 as shown in the figure is memorized. For example, when the atmospheric humidity is 50% and the ambient temperature is 20°C, the amount of expansion and contraction of the electrostatic recording paper 1 is 50% of the atmospheric humidity. The comparison circuit 21 determines that the elongation is about 0.6% based on the ambient temperature of -10°C. Comparison circuit 21
In this case, the temperature correction amount is always determined by comparing with the previous information which has been reversed for a certain arbitrary time period corresponding to the temperature/humidity detection period. Now, for example, the previous information (at the time of the n-1st image recording) has an atmospheric humidity of 50%, the atmospheric humidity is 20°C, and new information (at the time of the nth image recording) an arbitrary time after the previous information.
When the atmospheric humidity is 50% and the atmospheric temperature is 25° C., it is assumed that the amount of expansion and contraction of the electrostatic recording paper 1 changes from an elongation of 0.58% to an elongation of 0.63% with respect to the reference value. . Therefore, it is determined that in order to maintain the elongation of the electrostatic recording paper 1 at 0.58%, the ambient temperature must be set to 20°C. The output from comparison circuit 21 is then sent to temperature adjustment circuit 23. The temperature adjustment circuit 23 is for varying the ambient temperature near the multi-needle electrode head 5, and the temperature adjustment circuit 18 is installed inside a kite roller provided perpendicularly along the conveying direction of the electrostatic recording paper 1, for example. It consists of a heat roller with a built-in rod-shaped heater.

温度調節器１８は温度調節回路２１からの信号に基づい
て動作し静電記録紙ｌの温度量を可変させ、雰囲気温度
を２０℃に保つ。The temperature controller 18 operates based on a signal from the temperature adjustment circuit 21 to vary the temperature of the electrostatic recording paper l and maintain the ambient temperature at 20°C.

以上のように、温度及び湿度を検出する温・湿度検出部
１７を静電記録紙１に接触又は近傍に設け、この検出部
により得られる信号と基準信号とを比較部で比較判断す
ることによって、静電記録紙１の搬送方向に対して直角
方向の伸縮量を算出し、その量に応して温度調節器１８
を動作させて温度を調節することにより、ｎ−１回目の
画像とｎ回目の画像を精度よく位置合わせが行うことが
てきる。As described above, the temperature/humidity detection section 17 for detecting temperature and humidity is provided in contact with or near the electrostatic recording paper 1, and the signal obtained by this detection section and the reference signal are compared and judged by the comparison section. , calculates the amount of expansion and contraction of the electrostatic recording paper 1 in the direction perpendicular to the conveying direction, and adjusts the temperature controller 18 according to the calculated amount.
By operating and adjusting the temperature, the (n-1)th image and the n-th image can be aligned with high accuracy.

発明の効果 以」−の説明からも明らかなように、本発明は多針電極
記録ヘットの近傍に、温度及び湿度を検出する温・湿度
検出手段を設け、この検出手段に得られる情報により、
記録媒体の搬送方向に対して直角方向の伸縮量を算出し
、その量に応じて温度調節を行う補正手段を備えたもの
であるのて、重ね合わせ記録時に温度・湿度が変化して
記録媒体に伸縮が生しても、その伸縮量に応して温度調
節器によって温度調節を行って伸縮量を同し値にできる
ため容易に精度の良い画像の位置重ね合わせを行うこと
ができ、簡単な構造低コストで実現できる等の効果を有
している。As is clear from the explanation in ``Effects of the Invention'', the present invention provides temperature/humidity detection means for detecting temperature and humidity near the multi-needle electrode recording head, and uses the information obtained by this detection means to
It is equipped with a correction means that calculates the amount of expansion and contraction in the direction perpendicular to the conveyance direction of the recording medium and adjusts the temperature accordingly. Even if there is expansion or contraction, the temperature can be adjusted using a temperature controller according to the amount of expansion or contraction to make the amount of expansion or contraction the same, making it easy to superimpose the positions of images with high precision. It has the advantage of being able to realize a simple structure at low cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例によるノＪラー静電記録装置
の概略斜視図、第２図は温・湿度検出部、信号補正部、
湿度調整電圧信号発生部のブロック図、第３図は温・湿
度と静電記録紙の伸びの相関関係図、第４図は従来のノ
Ｊラー静電記録装置の概略構成図である。 １・・・・・・静電記録紙、２・・・・・・ワインダー
、３・・・・・・リワインダ−１４・・・・・・押えロ
ーラ、５・・・・・・多針電極記録ヘット、６・・・・
・・除電バー、７，８，９゜１０・・・・・・現像器、
１１・・・・・・スクイーズ、１２・・・駆動ローラ、
１３・・・・・・押圧ローラ、１４・・・・・・駆動源
、１７・・・・・・温・湿度検出器、１８・・・・・温
度調節器、１９・・・・・・伸縮補正部。FIG. 1 is a schematic perspective view of a Noller electrostatic recording device according to an embodiment of the present invention, and FIG. 2 shows a temperature/humidity detection section, a signal correction section,
FIG. 3 is a block diagram of a humidity adjustment voltage signal generating section, FIG. 3 is a correlation diagram between temperature/humidity and elongation of electrostatic recording paper, and FIG. 4 is a schematic configuration diagram of a conventional Noller electrostatic recording apparatus. 1... Electrostatic recording paper, 2... Winder, 3... Rewinder-14... Presser roller, 5... Multi-needle electrode Record head, 6...
・・Static elimination bar, 7, 8, 9゜10...Developer,
11... Squeeze, 12... Drive roller,
13...Press roller, 14...Drive source, 17...Temperature/humidity detector, 18...Temperature controller, 19... Expansion correction section.

Claims (1)

【特許請求の範囲】[Claims] 記録媒体を搬送する搬送手段と、この搬送手段により搬
送される記録媒体に順次異なる色の画像を重ねて記録す
るように前記記録媒体の搬送通路に沿って配置された複
数の多針電極記録ヘッド及び現像器とからなる記録手段
と前記記録媒体に接触又は近傍して設けられ、温度及び
湿度を検出する検出手段と、この検出手段により得られ
る情報により、記録媒体の伸縮量を一定にする温度調節
手段とを備えたことを特徴とするカラー静電記録装置。A conveyance means for conveying a recording medium, and a plurality of multi-needle electrode recording heads arranged along a conveyance path of the recording medium so as to sequentially record images of different colors on the recording medium conveyed by the conveyance means. and a developing device; a detection means provided in contact with or near the recording medium to detect temperature and humidity; and a temperature that maintains a constant amount of expansion and contraction of the recording medium based on the information obtained by the detection means. A color electrostatic recording device characterized by comprising: an adjusting means.