【発明の詳細な説明】〔産業上の利用分野〕本発明はインクジェットプリンタに関し、特にフルカラ
ープリントと白黒プリントができるプリンタに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet printer, and particularly to a printer capable of full-color printing and black-and-white printing.
(従来の技術)従来、白黒文字の描出だけでなくカラーグラフィックス
の描出もできるインクジェットプリンタにおいては、白
黒用およびカラー用ノズルが同一の性能のを用い白黒文
字の印字速度とカラーグラフィックスの印字速度が同一
速度のものが知られている。(Prior Art) Conventionally, inkjet printers that can print not only black and white characters but also color graphics use nozzles with the same performance for black and white and color, and the printing speed of black and white characters and the printing of color graphics are different. It is known that the speeds are the same.
上述した従来のインクジェットプリンタにおいては、白
黒文字の印字速度とカラーグラフィックスの印字速度と
が同一速度であるため、高密度印字あるいは高速印字が
要求される白黒文字の印字速度が制約されるという欠点
があった。In the conventional inkjet printer described above, the printing speed for black and white characters and color graphics are the same, so the printing speed for black and white characters that requires high density printing or high speed printing is restricted. was there.
本発明は、白黒文字とカラーグラフィック印字が可能で
ありながら、白黒文字の高密度印字あるいは高速印字が
可能なインクジェットプリンタを提供することを目的と
する。SUMMARY OF THE INVENTION An object of the present invention is to provide an inkjet printer that is capable of printing black-and-white characters and color graphics, and is also capable of high-density printing or high-speed printing of black-and-white characters.
本発明のインクジェットプリンタは、記録ノズル列にn個のノズル開口部が設けられて該ノズ
ル列を複数備えている黒色インキ吐出ヘッド部と、前記記録ノズル列にm(m≦n)個のノズル開口部が設
けられ、該ノズル列をカラー印字に必要な色毎に備えて
いるカラーインキ吐出ヘッド部と、印字に使用するインキ吐出ヘッドを記録ノズル列毎に駆
動し、該ノズル列に応、して印字タイミングを設定する
印字制御部とを有している。The inkjet printer of the present invention includes: a black ink ejection head section including a plurality of nozzle openings in which n nozzle openings are provided in a recording nozzle array; and m (m≦n) nozzles in the recording nozzle array. A color ink ejection head section is provided with an opening and has nozzle rows for each color necessary for color printing, and an ink ejection head used for printing is driven for each recording nozzle row, and a print control unit that sets print timing.
黒色インキ吐出ヘッド部とカラーインキ吐出ヘッド部を
備えて、それらを記録ノズル列毎に駆動することによっ
て、白黒印字およびカラー印字ができ、さらに、黒イン
キ吐出ヘッド部に複数の記録ノズル列を設けており、白
黒印字の際にはそのノズル数に応じて印字速度を設定す
るので白黒印字が高速となる。By providing a black ink ejection head section and a color ink ejection head section and driving them for each recording nozzle row, black and white printing and color printing can be performed. When printing in black and white, the printing speed is set according to the number of nozzles, resulting in faster black and white printing.
(実施例)次に、本発明の実施例について図面を参照して説明する
。(Example) Next, an example of the present invention will be described with reference to the drawings.
第1図は本発明のインクジェットプリンタの一実施例の
作動装置を示す図、第2図は記録ヘット6の拡大図、第
3図は印字制御部の一例を示すブロック図、第4図は記
録ヘッド6のノズル開口部の拡大図、第5図は記録ヘッ
ド6の他の実施例を示す図である。FIG. 1 is a diagram showing an operating device of an embodiment of an inkjet printer of the present invention, FIG. 2 is an enlarged view of a recording head 6, FIG. 3 is a block diagram showing an example of a printing control section, and FIG. 4 is a recording FIG. 5, an enlarged view of the nozzle opening of the head 6, is a diagram showing another embodiment of the recording head 6. As shown in FIG.
第1図において、用紙またはプラスチックシートなどの
記録媒体1は、上下に配置された一対のローラから成る
搬送ローラ2.3によって支持され、かつ矢印A方向(
副走査方向)へ搬送される。搬送ローラ3の前方にはこ
れと平行にガイドシャフト4が設けられ、ガイドシャフ
ト4に沿ってキャリジ5が矢印B方向(主走査方向)に
往復運動する。キャリジ5には記録ヘッド6が搭載され
ている。記録ヘッド6は、独立駆動が可能な複数組のヘ
ッドからなり、本実施例では第2図に示すように、ブラ
ックインキ印字用の61〜63とイエローインキ印字用
の64とマゼンタインキ印字用の65とシアンインキ印
字用の66と4組のノズル列が主走査方向に並べである
。このノズル列は副走査方向にノズル開口部が形成され
ており、ブラックインキ印字用の61〜63は、それぞ
れn個、カラー用の64〜66はそれぞれm個設けられ
、そのノズル開口部には第4図に示すように、インキ吐
出制御手段として電気熱変換体11を備えている。この
電気熱変換体40を印字データに基づいて駆動すること
により飛翔的インキ滴を形成し、記録媒体1に所定パタ
ーンで印字ドツトと付着させながら記録を行う。このよ
うに本実施例では電気熱変換体を用いたが、この場合、
圧電変換体と比べてマルチノズル化が容易に達成され、
本発明のプリンタにとって好ましい。In FIG. 1, a recording medium 1 such as paper or a plastic sheet is supported by a conveyance roller 2.3 consisting of a pair of rollers arranged above and below, and is supported in the direction of arrow A (
(sub-scanning direction). A guide shaft 4 is provided in front of and parallel to the conveyance roller 3, and a carriage 5 reciprocates along the guide shaft 4 in the direction of arrow B (main scanning direction). A recording head 6 is mounted on the carriage 5. The recording head 6 consists of multiple sets of heads that can be driven independently, and in this embodiment, as shown in FIG. 2, there are heads 61 to 63 for black ink printing, 64 for yellow ink printing, and magenta ink printing. Four sets of nozzle arrays, 65 and 66 for cyan ink printing, are arranged in the main scanning direction. This nozzle row has nozzle openings formed in the sub-scanning direction, with n numbers 61 to 63 each for black ink printing and m numbers 64 to 66 each for color printing. As shown in FIG. 4, an electrothermal converter 11 is provided as ink discharge control means. By driving this electrothermal transducer 40 based on print data, flying ink droplets are formed, and recording is performed while making them adhere to the recording medium 1 as print dots in a predetermined pattern. In this way, an electrothermal converter was used in this example, but in this case,
Compared to piezoelectric transducers, multi-nozzle formation is easily achieved.
Preferred for the printer of the present invention.
この記録時の記録ヘッド6の走査速度、印字タイミング
は、第3図に示す印字制御部によって制御される。本実
施例の場合、検出器31が白黒印字モード、または、カ
ラー印字モード等の印字モードを検出して検出信号36
を制御部32へ出力し、制御部32では、CCD等の画
像読取装置から得た画像情報35を、予めラインメモリ
34へ取込んであり、検出信号36を受けた際、印字モ
ードに応じたノズルを指示するノズル選択制御信号37
とそのノズに対応する走査速度を指示する印字速度制御
信号39を印字ドライブ部33へ出力し、さらに、印字
速度制御信号39に対応するラインメモリ読取制御信号
38をラインメモリ34へ出力してラインメモリ34か
ら印字情報を印字ドライブ部33へ順次読出して記録ヘ
ッド6を駆動し、一定の速度で主走査方向へ走査しなが
ら印字することになる。The scanning speed and print timing of the recording head 6 during this recording are controlled by a print control section shown in FIG. 3. In the case of this embodiment, the detector 31 detects a printing mode such as a black and white printing mode or a color printing mode and sends a detection signal 36.
is output to the control unit 32, and the control unit 32 has previously loaded image information 35 obtained from an image reading device such as a CCD into the line memory 34, and when receiving the detection signal 36, it outputs the image information 35 obtained from an image reading device such as a CCD to the line memory 34. Nozzle selection control signal 37 for instructing the nozzle
A printing speed control signal 39 instructing the scanning speed corresponding to the nozzle is outputted to the printing drive unit 33, and a line memory read control signal 38 corresponding to the printing speed control signal 39 is outputted to the line memory 34 to read the line. Print information is sequentially read from the memory 34 to the print drive section 33 to drive the recording head 6, and prints while scanning in the main scanning direction at a constant speed.
また、記録ヘッド6へのインキの供給は、可撓性のイン
キ供給パイプ7を通して不図示のインキタンクからそれ
ぞれ行なわれる。Further, ink is supplied to the recording head 6 from an ink tank (not shown) through a flexible ink supply pipe 7.
次に、本実施例の動作について説明する。Next, the operation of this embodiment will be explained.
ここでは、記録ヘッド6が1mm当り16ドツトの印字
を可能とし、ブラックインキ印字用ノズル列61〜63
のノズル数nを256、カラーインキ印字用ノズル列6
4〜66のノズル数mを128とする。また、電気熱変
換体11には24V、10μ5ec(7)パルス電圧を
3にH2(7)周波数で印加すると、まず、前述した印
字制御部が、白黒印字モードの場合、ブラックインキ印
字用ノズル列61〜63のみが印字を行なうようにノズ
ル選択制御信号37を、また、ノズル列が61〜63で
3つであるためカラー印字モード時の3倍の速度で印字
するように印字速度制御信号39を出力する。この時、
ノズル選択制御信号37はインキ水滴が主走査方向にi
n+m当り16ドツト形成されるように記録ヘッド6上
の各ノズル列の間隔に応じて適切なタイミングでインキ
吐出制御を行なう。カラー印字モードの場合は、カラー
インキ印字用ノズル列64〜66、さらに、ブラックイ
ンキを使用する場合はブラックインキ印字用ノズル列6
3のノズル128個を用い、画像情報35に補助変換、
マスキング、■(ガンマ)補正等の画像処理を施してラ
インメモリ34へ格納し、後は白黒印字モードと同様な
印字動作を行なう。Here, the recording head 6 is capable of printing 16 dots per 1 mm, and black ink printing nozzle arrays 61 to 63
The number of nozzles n is 256, and the nozzle row for color ink printing is 6.
The number m of nozzles from 4 to 66 is 128. When a 24V, 10μ5ec(7) pulse voltage is applied to the electrothermal converter 11 at a frequency of H2(7), the above-mentioned print control section first controls the nozzle array for black ink printing in the black and white printing mode. The nozzle selection control signal 37 is sent so that only nozzles 61 to 63 print, and the print speed control signal 39 is sent to print at three times the speed of the color printing mode because there are three nozzle rows 61 to 63. Output. At this time,
The nozzle selection control signal 37 indicates that the ink droplets are i in the main scanning direction.
Ink ejection control is performed at appropriate timing according to the interval between each nozzle row on the recording head 6 so that 16 dots are formed per n+m. In the case of color printing mode, nozzle rows 64 to 66 for color ink printing, and furthermore, nozzle row 6 for black ink printing when using black ink.
Auxiliary conversion to image information 35 using 128 nozzles of 3,
The image is subjected to image processing such as masking and (gamma) correction and stored in the line memory 34, and then the same printing operation as in the monochrome printing mode is performed.
本実施例において、白黒印字モードで記録ヘッド6の主
走査スピードを528mm/seeと設定し、主走査の
往路と復路とで印字すると、A4サイズの記録紙を横送
りすることで1分間に43枚の白黒プリントが得られ、
また、カラー印字モードで、同様に187.5mm/s
ecと設定し、主走査の往路で印字することで1.5分
間で1枚のフルカラープリントが得られた。In this embodiment, when the main scanning speed of the recording head 6 is set to 528 mm/see in the black and white printing mode, and printing is performed in the forward and backward passes of the main scan, the A4 size recording paper can be fed horizontally at 43 mm/see in 1 minute. You will get several black and white prints,
Also, in color printing mode, the speed is 187.5mm/s as well.
By setting ec and printing on the forward pass of the main scan, one full color print was obtained in 1.5 minutes.
なお、゛白黒印字モードがカラー印字モードと同一印字
条件、すなわちブラックインキ印字用ノズル列が1列で
、かつ、そのノズル数nとカラーインキ印字用ノズル列
のノズル数mが等しい場合は、プリント速度が同じとな
り、白黒印字モードでのスピード向上は期待できない。In addition, if the black and white printing mode has the same printing conditions as the color printing mode, that is, there is one nozzle row for black ink printing, and the number n of nozzles is equal to the number m of nozzles in the nozzle row for color ink printing, printing will not be possible. The speed will be the same, and no speed improvement can be expected in black and white printing mode.
第5図は記録ヘッド6の他の実施例を示す図である。FIG. 5 is a diagram showing another embodiment of the recording head 6. In FIG.
ここでは、ブラックインキ印字用ノズル列61.62.
63を主走査方向に並列して配置し、それらの副走査方
向に重ねるようにカラーインキ印字用ノズル列64.6
5.66を配置している。Here, black ink printing nozzle rows 61, 62.
63 are arranged in parallel in the main scanning direction, and the color ink printing nozzle rows 64 and 6 are arranged so as to overlap in the sub-scanning direction.
5.66 is placed.
また、カラー印字モードでのブラックインキの印字を行
なう場合、白黒印字時のブラックインキ印字ノズル列を
共用したが、カラー印字モード用のブラックインキ印字
にノズル列を別個に設けてもよい。Further, when printing with black ink in color printing mode, the black ink printing nozzle row for black and white printing is shared, but a separate nozzle row may be provided for black ink printing in color printing mode.
〔発明の効果〕以上説明したように本発明は、黒インキ印字用ヘッド部
とカラーインキ印字用ヘッド部とを備えて、印字モード
により印字制御部が使用するヘッド部を選択して印字す
るので、白黒プリントとフルカラープリントとの両方が
得られ多機能なプリンタを提供することができ、特に白
黒印字モードの場合、黒インキ印字用ヘッド部に複数の
印字用ノズル列を備えており、それらを考慮して印字制
御部が印字タイミング等を設定するのでカラー印字モー
ドの場合より高速化が計れ、さらに、その印字タイミン
グを請求項2のように主走査の往路と復路とで設定する
ことにより、商業的複写装置並のプリント速度を得るこ
とができるという効果がある。[Effects of the Invention] As explained above, the present invention includes a black ink printing head section and a color ink printing head section, and prints by selecting the head section to be used by the printing control section depending on the printing mode. , we can provide a multifunctional printer that can produce both black-and-white prints and full-color prints.Especially in the black-and-white print mode, the black ink print head is equipped with multiple printing nozzle rows, and these Since the print control unit sets the print timing etc. in consideration of the above, it is possible to achieve higher speed than in the color print mode.Furthermore, by setting the print timing for the forward and backward passes of the main scan as in claim 2, The effect is that it is possible to obtain a printing speed comparable to that of a commercial copying machine.
また、請求項3の電熱変換素子をノズル内のインキ吐出
制御手段として用いることにより、ノズルのマルチ化が
容易に達成でき高精細印字が可能となって白黒、カラー
共用のプリンタに有効である。Further, by using the electrothermal conversion element of claim 3 as an ink ejection control means in a nozzle, multiplication of nozzles can be easily achieved and high-definition printing is possible, which is effective for both black-and-white and color printers.
第1図は本発明のインクジェットプリンタの一実施例の
作動装置を示す図、第2図は記録ヘッド6の拡大図、第
3図は印字制御部の一例を示すブロック図、第4図は記
録ヘッド6のノズル開口部の拡大図、第5図は記録ヘッ
ド6の他の実施例を示す図である。1・・・記録媒体、 2.3・・・搬送ローラ、4
・・・ガイドシャフト、 5・・・キャリジ、6・
・・記録ヘッド、 7・・・インキ供給パイプ、3
1・・・検出器、 32・・・制御部、33・・・印
字ドライブ部、34・・・ラインメモリ、 35・・・画像情報、
36・・・検出信号、37・・・ノズル選択制御信号、38・・・ラインメモリ読取制御信号、39・・・印字
速度制御信号、40−・・電気熱変換体、61〜63・・・ブラックインキ印字用ノズル列、64
〜66・・・カラーインキ印字用ノズル列。FIG. 1 is a diagram showing an operating device of an embodiment of the inkjet printer of the present invention, FIG. 2 is an enlarged view of the recording head 6, FIG. 3 is a block diagram showing an example of a printing control section, and FIG. 4 is a recording FIG. 5, an enlarged view of the nozzle opening of the head 6, is a diagram showing another embodiment of the recording head 6. As shown in FIG. 1... Recording medium, 2.3... Conveyance roller, 4
...Guide shaft, 5.Carriage, 6.
... Recording head, 7... Ink supply pipe, 3
1...Detector, 32...Control unit, 33...Print drive unit, 34...Line memory, 35...Image information,
36...Detection signal, 37...Nozzle selection control signal, 38...Line memory reading control signal, 39...Printing speed control signal, 40-...Electrothermal converter, 61-63... Nozzle row for black ink printing, 64
~66... Nozzle row for color ink printing.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63042186AJP2710943B2 (en) | 1988-02-26 | 1988-02-26 | Inkjet printer |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63042186AJP2710943B2 (en) | 1988-02-26 | 1988-02-26 | Inkjet printer |
| Publication Number | Publication Date |
|---|---|
| JPH01216852Atrue JPH01216852A (en) | 1989-08-30 |
| JP2710943B2 JP2710943B2 (en) | 1998-02-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63042186AExpired - Fee RelatedJP2710943B2 (en) | 1988-02-26 | 1988-02-26 | Inkjet printer |
| Country | Link |
|---|---|
| JP (1) | JP2710943B2 (en) |
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| US7722146B2 (en) | 2002-12-02 | 2010-05-25 | Silverbrook Research Pty Ltd | Printing system having controlled multi-length printhead ICS |
| JP2016193508A (en)* | 2015-03-31 | 2016-11-17 | ブラザー工業株式会社 | Inkjet printer and inkjet head |
| Publication number | Publication date |
|---|---|
| JP2710943B2 (en) | 1998-02-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |