JPH0572268B2 - - Google Patents
Info
- Publication number
- JPH0572268B2 JPH0572268B2 JP60298710A JP29871085A JPH0572268B2 JP H0572268 B2 JPH0572268 B2 JP H0572268B2 JP 60298710 A JP60298710 A JP 60298710A JP 29871085 A JP29871085 A JP 29871085A JP H0572268 B2 JPH0572268 B2 JP H0572268B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- toner
- slit
- photoconductive layer
- electrode
- 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.)
- Expired - Lifetime
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 241000255925 Diptera Species 0.000 description 2
- 241001136824 Pyrgotidae Species 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Fax Reproducing Arrangements (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、複写機、フアクシミリ、光プリンタ
などに用いられ、特に階調記録を行う電子写真記
録装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is used in copying machines, facsimile machines, optical printers, etc., and particularly relates to an electrophotographic recording device that performs gradation recording.
（従来の技術）
従来よりサーマルヘツドプリンタ、ドツトプリ
ンタ、レーザプリンタなどにおいて階調記録を行
う方法として濃度階調法、面積階調法などがあ
る。(Prior Art) Conventionally, methods for recording gradation in thermal head printers, dot printers, laser printers, etc. include density gradation method, area gradation method, and the like.
例えば面積階調法における濃度パターン法で
は、階調を有する原画の１画素を、プリンタのＮ
×Ｎドツトのサブマトリツクスに対応させ、マト
リツクス中に印字させるドツトの数により濃度を
変えるものである。すなわち１入力画素データに
対して複数の出力画素を対応させるものであり、
階調レベル毎に設定された濃度マトリツクスパタ
ーンを用意しておき、入力画素データの階調レベ
ルに対応するマトリツクスパターンを２次元的に
出力してゆく。例えば４×４マトリツクスパター
ンの場合では、入力画素の階調レベルに応じて
P0からP16までのいずれかのパターンが４×４ド
ツトとして出力され、この場合は17階調となる。 For example, in the density pattern method in the area gradation method, one pixel of an original image with gradation is
This corresponds to a sub-matrix of ×N dots, and the density is changed depending on the number of dots printed in the matrix. In other words, multiple output pixels are made to correspond to one input pixel data.
A density matrix pattern set for each gradation level is prepared, and a matrix pattern corresponding to the gradation level of input pixel data is two-dimensionally output. For example, in the case of a 4 x 4 matrix pattern, depending on the gradation level of the input pixel,
Any pattern from P0 to P16 is output as 4×4 dots, which in this case has 17 gradations.
（発明が解決しようとする問題点）
上記濃度パターン法では、出力ドツトの大きさ
は有限であるから、高階調度を得るために１マト
リツクスパターン内のドツト数を多くすれば解像
度が低下し、逆に高解像度を得るためには、１マ
トリツクスパターン内のドツト数を減らす、すな
わち階調性を犠牲にしなければならない。(Problems to be Solved by the Invention) In the density pattern method described above, since the size of the output dot is finite, increasing the number of dots in one matrix pattern in order to obtain a high gradation will reduce the resolution. Conversely, in order to obtain high resolution, the number of dots within one matrix pattern must be reduced, that is, the gradation must be sacrificed.
本発明の目的は、本出願人が先に工程数を減少
し、印刷時間の短縮を図るものとして提案したト
ナーを直接記録紙に転写する方式を用いて、解像
度を低下させることなく、連続階調を得る電子写
真記録装置を提供することにある。 The purpose of the present invention is to reduce the number of steps and print time by using a method of directly transferring toner to recording paper, which was previously proposed by the applicant as a means of reducing the number of steps and printing time. An object of the present invention is to provide an electrophotographic recording device that can obtain the desired tone.
（問題点を解決するための手段）
本発明の特徴は、絶縁性の透明支持体と透明電
極と光導電層とからなる感光体の光導電層の表面
にそつて帯電したトナーを付着させる手段と、透
明支持体側から光導電層に光ビームを照射する光
照射手段と、搬送される記録媒体を介して光導電
層に対向し、光導電層の光照射を受けた部分にお
けるトナーをクーロン力で吸引して記録媒体に転
写する転写手段とを有する電子写真記録装置にお
いて、記録媒体と感光体との間に、トナーが通過
し得るスリツトが開設されているスリツト電極が
配置され、スリツト電極には、飛翔するトナーの
電荷の極性と同極性であつて画像の濃淡信号に対
応して変化する電圧を印加する手段が接続されて
いるところにある。(Means for Solving the Problems) The present invention is characterized by means for depositing charged toner along the surface of a photoconductive layer of a photoreceptor comprising an insulating transparent support, a transparent electrode, and a photoconductive layer. and a light irradiation means that irradiates the photoconductive layer with a light beam from the transparent support side, and a light irradiation means that faces the photoconductive layer through the conveyed recording medium, and applies Coulomb force to the toner in the light irradiated portion of the photoconductive layer. In an electrophotographic recording apparatus, a slit electrode having a slit through which toner can pass is arranged between the recording medium and the photoconductor, and a slit electrode is provided between the recording medium and the photoreceptor. is connected to a means for applying a voltage that has the same polarity as the charge of the flying toner and changes in accordance with the gray level signal of the image.
（作用）
光導電層の表面に位置する光照射を受けた明部
におけるトナーが、転写手段からの静電気力によ
り記録媒体に向つて飛翔する途中、スリツト電極
に印加された電圧によりトナーの一部は反発して
スリツトを通過し得ずに光導電層の表面上に戻
り、スリツトを通過できたトナーのみが記録媒体
上に転写される。１入力画素データには１ドツト
が対応しており、スリツト電極の印加電圧は１入
力画素の濃淡信号に対応した電圧値であり、１ド
ツト毎のトナー付着量により階調を得るので、解
像度を犠牲にせずに高階調性が得られる。(Function) While the toner in the bright area on the surface of the photoconductive layer that is irradiated with light flies toward the recording medium due to the electrostatic force from the transfer means, some of the toner is blown away by the voltage applied to the slit electrode. The toner is repelled and cannot pass through the slit and returns to the surface of the photoconductive layer, and only the toner that has passed through the slit is transferred onto the recording medium. One dot corresponds to one input pixel data, and the voltage applied to the slit electrode is a voltage value corresponding to the gray level signal of one input pixel.The gradation is obtained by the amount of toner attached to each dot, so the resolution can be improved. High gradation can be obtained without sacrificing.
（実施例）
以下図面に基づいて本発明による電子写真記録
装置の実施例について説明する。(Example) An example of an electrophotographic recording apparatus according to the present invention will be described below based on the drawings.
第３図は本発明に係る電子写真記録装置の原理
図を示している。感光体１は３層構造のもので、
ガラスなどの絶縁性の透明支持体１ａの上面に透
明電極１ｂを形成し、この透明電極の上面に光導
電層１ｃを形成してある。光導電層１ｃに近接対
向して記録媒体２が左方から右方へ搬送され、記
録媒体２の背後には転写手段３として、電源E1
に接続されている転写ローラ電極が配設してあ
る。感光体１の光導電層１ｃの表面を帯電された
トナー４が搬送され、この例ではトナー４はプラ
スに帯電されている。記録媒体２をはさんで転写
手段３に対向して位置する感光体１の光照射部５
に光源（図示せず）から発せられた、例えば画像
文字情報に応じて変調された光ビーム６がポリゴ
ンミラー７、ｆ−θミラー８などの光照射手段を
介して透明支持体１ａ側から照射されると光導電
層１ｃの光照射を受けた明部が部分的に導電性を
呈し、明部におけるトナー４に電源E2により負
電圧にバイアスされている透明電極１ｂより光導
電層１ｃの光照射部５における明部を介して逆極
性の電荷が注入される。明部において逆極性の電
荷が注入されたトナー４に対して転写手段３から
静電気力が作用しトナーは記録媒体２に転写され
る。すなわち感光体１の前帯電なくして、露光
し、トナー４が直接記録媒体２に転写される。 FIG. 3 shows a principle diagram of an electrophotographic recording apparatus according to the present invention. The photoreceptor 1 has a three-layer structure.
A transparent electrode 1b is formed on the upper surface of an insulating transparent support 1a such as glass, and a photoconductive layer 1c is formed on the upper surface of this transparent electrode. A recording medium 2 is conveyed from left to right in close opposition to the photoconductive layer 1c, and a power source E 1 is connected behind the recording medium 2 as a transfer means 3 .
A transfer roller electrode connected to the transfer roller electrode is provided. Charged toner 4 is conveyed on the surface of photoconductive layer 1c of photoreceptor 1, and in this example, toner 4 is positively charged. A light irradiation section 5 of the photoreceptor 1 located opposite the transfer means 3 with the recording medium 2 in between.
A light beam 6 emitted from a light source (not shown) and modulated according to, for example, image character information is irradiated from the transparent support 1a side via light irradiation means such as a polygon mirror 7 and an f-θ mirror 8. As a result, the bright part of the photoconductive layer 1c that has been irradiated with light becomes partially conductive, and the toner 4 in the bright part of the photoconductive layer 1c is exposed to the transparent electrode 1b biased to a negative voltage by the power source E2 . Charges of opposite polarity are injected through the bright portion of the light irradiation section 5 . In the bright area, an electrostatic force is applied from the transfer means 3 to the toner 4 injected with charges of opposite polarity, and the toner is transferred onto the recording medium 2. That is, the photoreceptor 1 is exposed to light without being pre-charged, and the toner 4 is directly transferred to the recording medium 2.
第１図に本発明における上記原理に基づく電子
写真記録装置の一実施例を示す。 FIG. 1 shows an embodiment of an electrophotographic recording apparatus based on the above principle of the present invention.
感光体１の光導電層１ｃの上の一端部にトナー
容器９が配設されており、トナー容器９内には電
源E3が接続されているドクターブレード１０が
配設されている。トナー容器９に収納されている
トナー４は、光導電層１ｃの表面を光照射部５に
向かつて搬送される途中でドクターブレード１０
によつてその層厚が調整されると共にプラスの電
荷が注入され、プラスに帯電する。感光体１の光
導電層１ｃの表面と近接対向して記録媒体２が搬
送され、記録媒体２の背後には、光照射部５に対
向して転写手段としての転写ローラ電極３が設け
られており、この転写ローラ電極３に電源E1が
接続されている。感光体１の光照射部５には、光
源（図示せず）から発せられかつ画像文字情報に
応じて変調された光ビーム６がポリゴンミラー
７、ｆ−θミラー８からなる光走査手段を介して
照射される。さらに光導電層１ｃと記録媒体２と
の間には、スリツト電極１１が介在させてあり、
光照射部に対向したトナーの飛翔経路の途中にス
リツト１１ａが設けられている。スリツト１１ａ
は記録紙の幅方向に延伸する幅狭のものである。
スリツト電極１１には電圧を印加する手段１２に
より、透明電極１ｂと同極性であり、かつ画像の
濃淡信号に対応した電圧が印加される。 A toner container 9 is disposed at one end of the photoconductive layer 1c of the photoreceptor 1, and a doctor blade 10 connected to a power source E3 is disposed within the toner container 9. The toner 4 stored in the toner container 9 is transported by the doctor blade 10 while being conveyed so that the surface of the photoconductive layer 1c is directed toward the light irradiation section 5.
The layer thickness is adjusted by , and a positive charge is injected into the layer to make it positively charged. A recording medium 2 is conveyed closely facing the surface of the photoconductive layer 1c of the photoreceptor 1, and a transfer roller electrode 3 serving as a transfer means is provided behind the recording medium 2, facing the light irradiation section 5. A power source E 1 is connected to this transfer roller electrode 3 . A light beam 6 emitted from a light source (not shown) and modulated according to the image character information is applied to the light irradiation section 5 of the photoreceptor 1 via a light scanning means consisting of a polygon mirror 7 and an f-theta mirror 8. irradiated. Furthermore, a slit electrode 11 is interposed between the photoconductive layer 1c and the recording medium 2.
A slit 11a is provided in the middle of the toner flight path facing the light irradiation section. Slit 11a
is a narrow one extending in the width direction of the recording paper.
A voltage applying means 12 applies a voltage to the slit electrode 11 which has the same polarity as the transparent electrode 1b and corresponds to the gray level signal of the image.
画像を記録する際に、感光体の透明支持体側か
らポリゴンミラー７、ｆ−θミラー８を介して光
ビームが照射されると、光照射を受けた明部が部
分的に導電性を呈し、明部におけるトナー４に電
源E2によつて負電圧にバイアスされている透明
電極１ｂからドクターブレード１０によつて注入
された電荷と逆極性のマイナスの電荷が注入され
る。逆極性のマイナスの電荷が注入されたマイナ
ス帯電のトナー４に転写ローラ電極３から静電気
力が作用し、トナーは記録媒体２に向つて飛翔す
る。ところが、光導電層１ｃと記録媒体２との間
にスリツト電極１１が介在させてあり、スリツト
電極１１には電圧を印加する手段１２より、飛翔
するトナーの帯電電荷と同極性であり、かつ画像
の濃淡信号に対応した電圧が印加されるので、ス
リツト１１ａを通過するトナー４の量が制御され
る。すなわち濃い画像を記録する際には、それに
対応して低い電圧がスリツト１１に印加され、そ
のため記録媒体に向つて飛翔したきたトナー４の
大部分がスリツト１１ａを通過でき、記録媒体２
に転写されて濃い画像記録とする。淡い画像を記
録する際には、それに対応して高い電圧がスリツ
ト電極１１に印加され、このために記録媒体２に
向つて飛翔してきたトナー４の大部分はスリツト
電極１１に反発されてスリツト１１ａを通過でき
ず、少量のトナーのみがスリツト１１ａを通過し
て記録媒体２に転写されて淡い画像記録となる。
電圧は連続的に可変であるので、スリツト１１ａ
を通過できるトナー４の量を連続的に制御するこ
とができる。さらに１ドツト毎のトナーの付着量
により階調を得られ、その付着量は連続的に可変
であるので、高階調性を得られ、解像度も低下す
ることはない。 When recording an image, when a light beam is irradiated from the transparent support side of the photoreceptor through the polygon mirror 7 and the f-theta mirror 8, the bright areas irradiated with light partially exhibit conductivity, A negative charge having a polarity opposite to that injected by the doctor blade 10 is injected into the toner 4 in the bright area from the transparent electrode 1b biased to a negative voltage by the power source E2. An electrostatic force is applied from the transfer roller electrode 3 to the negatively charged toner 4 into which a negative charge of opposite polarity has been injected, and the toner flies toward the recording medium 2 . However, a slit electrode 11 is interposed between the photoconductive layer 1c and the recording medium 2, and a voltage is applied to the slit electrode 11 by a means 12, which has the same polarity as the charged charge of the flying toner, and an image. Since a voltage corresponding to the density signal is applied, the amount of toner 4 passing through the slit 11a is controlled. That is, when recording a dark image, a correspondingly low voltage is applied to the slit 11, so that most of the toner 4 that has flown toward the recording medium can pass through the slit 11a, and the
is transferred to create a dark image record. When recording a pale image, a correspondingly high voltage is applied to the slit electrode 11, and therefore most of the toner 4 that has flown toward the recording medium 2 is repelled by the slit electrode 11 and is transferred to the slit 11a. Only a small amount of toner passes through the slit 11a and is transferred to the recording medium 2, resulting in a pale image recording.
Since the voltage is continuously variable, the slit 11a
The amount of toner 4 that can pass through can be continuously controlled. Furthermore, gradation can be obtained by the amount of toner deposited on each dot, and since the amount of toner deposited is continuously variable, high gradation can be obtained and the resolution will not deteriorate.
このようにして感光体の前帯電なくして露光
し、その部分のトナー４が記録媒体２に向つて飛
翔し、途中スリツト電極１１の印加電圧に対応し
てその一部はスリツト１１ａを通過し、他は感光
体上へ戻り、スリツト１１ａを通過したトナー４
のみが記録媒体２に転写される。 In this way, the photoreceptor is exposed to light without being pre-charged, and the toner 4 in that part flies toward the recording medium 2, and part of it passes through the slit 11a in response to the voltage applied to the slit electrode 11 on the way. The other toner 4 returns onto the photoreceptor and passes through the slit 11a.
Only the recorded image is transferred to the recording medium 2.
なお第１図においては第３図に示した原理図と
実質的に同一な部材には同一符号を付してある。 In FIG. 1, members that are substantially the same as those in the principle diagram shown in FIG. 3 are given the same reference numerals.
第２図は本発明の他の実施例を示すものであ
り、スリツト１０１ａを設けてあるスリツト電極
１０１の光照射部５のよりも紙搬送方向上流の部
分は、記録媒体２と接触するようにその端面が転
写ローラ電極３に接近して設けており、記録媒体
２の位置決め用部材としての作用をも果してい
る。これによりトナー４と記録媒体２の距離を精
度よくスリツト電極１０１の光照射部５よりも搬
送方向下流の部分は、記録媒体２に転写されたト
ナー４に接触しないようにその端面が記録媒体２
に対してある間隔をおいて設けている。その他の
構造については第１図示のものと同様である。 FIG. 2 shows another embodiment of the present invention, in which a portion of the slit electrode 101 provided with the slit 101a upstream of the light irradiation section 5 in the paper conveyance direction is in contact with the recording medium 2. Its end face is provided close to the transfer roller electrode 3, and also functions as a member for positioning the recording medium 2. As a result, the distance between the toner 4 and the recording medium 2 can be adjusted accurately.The end surface of the slit electrode 101 downstream of the light irradiation part 5 in the conveying direction is placed on the recording medium 2 so as not to come into contact with the toner 4 transferred to the recording medium 2.
They are placed at a certain interval from each other. The other structures are the same as those shown in the first figure.
また第２図において第１図に示した実施例と実
質的に同一な部材には同一符号を付してある。 Further, in FIG. 2, members that are substantially the same as those in the embodiment shown in FIG. 1 are designated by the same reference numerals.
（発明の効果）
以上に述べたように、本発明にかかる電子写真
記録装置によれば、スリツト電極に印加される電
圧値を制御することにより、トナーが感光体上か
ら記録媒体へ向つて飛翔する途中でスリツトを通
過できるトナーの量を制御でき、連続的な変化量
を得ることが可能である。１ドツト毎のトナーの
付着量により階調が得られるので、高階調性が得
られ、しかも解像度が低下することはない。また
スリツト電極を光照射部の紙搬送方向上流におい
て記録媒体と接触させて記録媒体の位置決めを行
なつた際には記録媒体の位置精度が容易に得られ
る。(Effects of the Invention) As described above, according to the electrophotographic recording apparatus according to the present invention, by controlling the voltage value applied to the slit electrode, the toner can fly from the photoreceptor toward the recording medium. It is possible to control the amount of toner that can pass through the slit during the process, and it is possible to obtain a continuous change in the amount. Since the gradation is obtained by the amount of toner adhered to each dot, high gradation can be obtained without deteriorating the resolution. Further, when the recording medium is positioned by bringing the slit electrode into contact with the recording medium upstream of the light irradiation section in the paper conveyance direction, the positional accuracy of the recording medium can be easily obtained.
第１図は本発明の一実施例の要部断面図、第２
図は他の実施例の要部断面図、第３図は本発明に
係る電子写真記録装置の原理図である。
１……感光体、１ａ……透明支持体、１ｂ……
透明電極、１ｃ……光導電層、２……記録媒体、
３……転写手段、４……トナー、６……光ビー
ム、１１，１０１……スリツト電極、１１ａ，１
０１ａ……スリツト、１０１ｂ……位置決め突
部、１２……電圧を印加する手段。
Fig. 1 is a sectional view of a main part of an embodiment of the present invention, Fig.
The figure is a sectional view of a main part of another embodiment, and FIG. 3 is a principle diagram of an electrophotographic recording apparatus according to the present invention. 1...Photoreceptor, 1a...Transparent support, 1b...
Transparent electrode, 1c... photoconductive layer, 2... recording medium,
3... Transfer means, 4... Toner, 6... Light beam, 11, 101... Slit electrode, 11a, 1
01a...Slit, 101b...Positioning protrusion, 12...Means for applying voltage.
Claims (1)
からなる感光体の上記光導電層の表面にそつて帯
電したトナーを付着させる手段と、 上記透明支持体側から上記光導電層に光ビーム
を照射する光照射手段と、 搬送される記録媒体を介して上記光導電層に対
向し、上記光導電層の光照射を受けた部分におけ
るトナーをクーロン力で吸引して上記記録媒体に
転写する転写手段と を有する電子写真記録装置において、 上記記録媒体と上記感光体との間に、上記トナ
ーが通過し得るスリツトが開設されているスリツ
ト電極が配置され、 上記スリツト電極には、飛翔するトナーの電荷
の極性と同極性であつて画像の濃淡信号に対応し
て変化する電圧を印加する手段が接続されている ことを特徴とする電子写真記録装置。 ２ 請求項１において上記スリツト電極の上記ス
リツトよりも上記記録媒体搬送方向上流の部分は
その端面が上記記録媒体に密着するように上記転
写手段方向に接近して設けてあり、 上記スリツト電極の上記スリツトよりも上記記
録媒体搬送方向下流の部分はその端面が上記記録
媒体に対しある間〓をもつて設けてある ことを特徴とする電子写真記録装置。[Scope of Claims] 1. A means for adhering a charged toner along the surface of the photoconductive layer of a photoreceptor comprising an insulating transparent support, a transparent electrode, and a photoconductive layer; a light irradiation means that irradiates a light beam onto the photoconductive layer; and a light irradiation means that faces the photoconductive layer via a conveyed recording medium and attracts toner in a portion of the photoconductive layer that is irradiated with light using Coulomb force. In an electrophotographic recording apparatus having a transfer means for transferring to the recording medium, a slit electrode having a slit through which the toner can pass is disposed between the recording medium and the photoreceptor, and the slit electrode An electrophotographic recording device characterized in that the device is connected to means for applying a voltage having the same polarity as the polarity of the charge of the flying toner and varying in accordance with the grayscale signal of the image. 2. In claim 1, a portion of the slit electrode upstream of the slit in the recording medium conveyance direction is provided close to the transfer means so that its end surface is in close contact with the recording medium, and An electrophotographic recording apparatus characterized in that a portion downstream of the slit in the recording medium conveyance direction is provided with an end face thereof having a certain distance from the recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298710A JPS62156674A (en) | 1985-12-27 | 1985-12-27 | Electrophotographic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298710A JPS62156674A (en) | 1985-12-27 | 1985-12-27 | Electrophotographic recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62156674A JPS62156674A (en) | 1987-07-11 |
| JPH0572268B2 true JPH0572268B2 (en) | 1993-10-08 |
Family
ID=17863282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60298710A Granted JPS62156674A (en) | 1985-12-27 | 1985-12-27 | Electrophotographic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62156674A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0688422B2 (en) * | 1988-09-26 | 1994-11-09 | 株式会社精工舎 | Electrophotographic recording device |
| JPH0688423B2 (en) * | 1988-09-26 | 1994-11-09 | 株式会社精工舎 | Electrophotographic recording device |
| JPH0688424B2 (en) * | 1988-09-29 | 1994-11-09 | 株式会社精工舎 | Electrophotographic recording device |
| JPH106506A (en) * | 1996-04-23 | 1998-01-13 | Seiko Instr Inc | Recording device and recording unit employed in the device and recording head |
| JPH1086382A (en) * | 1996-09-13 | 1998-04-07 | Seiko Instr Inc | Recording apparatus and recording unit to be used for the apparatus |
| JPH10202882A (en) * | 1997-01-28 | 1998-08-04 | Seiko Instr Inc | Recording head |
| JPH10235868A (en) * | 1997-02-25 | 1998-09-08 | Seiko Instr Inc | Recording head |
-
1985
- 1985-12-27 JP JP60298710A patent/JPS62156674A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62156674A (en) | 1987-07-11 |
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