JPH02299856A - Liquid ejection recording device - Google Patents

Liquid ejection recording device

Info

Publication number
JPH02299856A
JPH02299856A JP12028889A JP12028889A JPH02299856A JP H02299856 A JPH02299856 A JP H02299856A JP 12028889 A JP12028889 A JP 12028889A JP 12028889 A JP12028889 A JP 12028889A JP H02299856 A JPH02299856 A JP H02299856A
Authority
JP
Japan
Prior art keywords
printing
signal
head
speed
carriage
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
Application number
JP12028889A
Other languages
Japanese (ja)
Inventor
Kimio Nishitani
公男 西谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP12028889A priority Critical patent/JPH02299856A/en
Publication of JPH02299856A publication Critical patent/JPH02299856A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To prevent generation of print irregularities by determining the time for liquid ejection based on the record scanning speed of a recording head and driving the head at that time. CONSTITUTION:A reference printing signal generator 1 generates a pulse signal at an equal interval, and this signal is one detected by a position detection device such as a linear encoder at a position for a carriage on which a printing head is mounted or is based on a drive pulse entered to a motor for movement of the carriage. A control circuit 2 delays a signal from the reference printing signal generator 1 by a delay time T calculated by a delay calculation circuit 6. A driver 7 drives a printing head 8 based on a reference printing signal delayed by a control circuit 2. Thus ink droplets are sent flying to the paper correctly and the record is prevented from being printed irregularly.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は液体を噴射して記録する液体噴射記録装置に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid jet recording device that records by jetting liquid.

[従来の技術] 従来の液体噴射記録装置、例えば、インクジェットプリ
ンタは、印字基準信号に従ってインクを吐出するように
なっていた。
[Prior Art] Conventional liquid jet recording devices, such as inkjet printers, eject ink according to a printing reference signal.

[発明が解決しようとする課題] しかしながら、インク滴の着弾位置が、印字走査速度を
速くした高速印字では、第3図(b)に示すように、適
正着弾位置より印字走査方向にずれ、印字走査速度を遅
くした低速印字では、第3図(c)に示すように、適正
着弾位置より印字走査方向と逆方向にずれて適正位置に
インク滴が着弾せず、印字ムラを生じるという問題点が
あった。
[Problems to be Solved by the Invention] However, in high-speed printing where the printing scanning speed is increased, the landing position of the ink droplet deviates from the proper landing position in the printing scanning direction, as shown in FIG. 3(b), and the printing In low-speed printing where the scanning speed is slowed down, as shown in Figure 3(c), there is a problem in that the ink droplets deviate from the proper landing position in the opposite direction to the printing scanning direction, and the ink droplets do not land at the proper position, resulting in uneven printing. was there.

本発明の目的は、上記のような問題点を解決し、記録ム
ラを防止できる液体噴射記録装置を提供することにある
An object of the present invention is to provide a liquid jet recording apparatus that can solve the above problems and prevent uneven recording.

[課題を解決するための手段] このような目的を達成するため、本発明は、記録ヘッド
の記録走査速度を検出する速度検出手段と、該速度検出
手段により検出された記録走査速度に基づき液体噴出タ
イミングを決定する決定手段と、該決定手段により決定
されたタイミングに基づき前記記録ヘッドを駆動する駆
動手段とを備えたことを特徴とする。
[Means for Solving the Problems] In order to achieve such an object, the present invention includes a speed detection means for detecting the print scanning speed of a print head, and a liquid detection means based on the print scanning speed detected by the speed detection means. The present invention is characterized by comprising a determining means for determining ejection timing, and a driving means for driving the recording head based on the timing determined by the determining means.

[作 用コ 本発明では、記録ヘッドの記録走査速度を速度検出手段
により検出し、速度検出手段により検出された記録走査
速度に基づき液体噴出タイミングを決定手段により決定
し、決定手段により決定されたタイミングに基づき記録
ヘッドを駆動手段により駆動する。
[Function] In the present invention, the recording scanning speed of the recording head is detected by the speed detecting means, the liquid ejection timing is determined by the determining means based on the recording scanning speed detected by the speed detecting means, and the timing determined by the determining means is determined by the determining means. The recording head is driven by the driving means based on the timing.

[実施例] 以下、本発明の実施例を図面を参照して詳細に説明する
[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

第1図は本発明の一実施例を示す。これはインクジェッ
トプリンタの例である。
FIG. 1 shows an embodiment of the invention. This is an example of an inkjet printer.

図において、1は印字基準信号発生器で、第2図(a)
に示す等間隔のパルス信号を出力するものである。この
パルス信号は印字ヘッドが搭載されたキャリッジの位置
からリニアエンコーダ等の位置検出装置によって検出さ
れたものが、あるいはキャリッジを移動するモータに入
力する駆動パルスを基にしたものである。
In the figure, 1 is a printing reference signal generator, as shown in Fig. 2(a).
It outputs equally spaced pulse signals shown in the figure. This pulse signal is detected by a position detection device such as a linear encoder from the position of the carriage on which the print head is mounted, or is based on a drive pulse input to a motor that moves the carriage.

3はドライバ回路で、モータ4を駆動するものである。A driver circuit 3 drives the motor 4.

4はモータで、印字ヘッドを搭載したキャリッジを走査
移動するものである。5は速度検出手段としての速度検
出器で、キャリッジの走査速度を検出するものである。
4 is a motor that scans and moves the carriage on which the print head is mounted. Reference numeral 5 denotes a speed detector as speed detection means, which detects the scanning speed of the carriage.

6はディレィ演算回路で、遅延時間Tを式(1)に基づ
き演算するものである。
6 is a delay calculation circuit which calculates the delay time T based on equation (1).

T  = (Vlll−VW)(d/V)IVXン  
    −<1)ただし、VXI  :速度検出器5に
より検出された高速印字時のキャリッジの印字 走査速度 v8:速度検出器5により検出された 低速印字時のキャリッジの印字 走査速度 vy:インク吐出速度  (一定) d :印字ヘッド8のノズル面から被 記録媒体までの距!!(一定) 2は制御回路で、印字基準信号発生器1からの信号をデ
ィレィ演算回路6により演算された遅延時間Tだけ遅延
させるものである。制御回路2とディレィ演算回路6に
より決定手段が構成されている。8は印字ヘッドで、印
字インクを吐出させるものである。7は駆動手段として
の印字ヘッドドライバで、制御回路2により遅延された
印字基準信号に基づき印字ヘッド8を駆動するものであ
る。
T = (Vlll-VW)(d/V)IVXn
-<1) However, VXI: print scanning speed of the carriage during high-speed printing detected by the speed detector 5 v8: print scanning speed of the carriage during low-speed printing detected by the speed detector 5 vy: ink ejection speed ( Constant) d: Distance from the nozzle surface of the print head 8 to the recording medium! ! (Constant) 2 is a control circuit that delays the signal from the printing reference signal generator 1 by the delay time T calculated by the delay calculation circuit 6. The control circuit 2 and the delay calculation circuit 6 constitute a determining means. 8 is a print head for ejecting printing ink. Reference numeral 7 denotes a print head driver as a driving means, which drives the print head 8 based on a print reference signal delayed by the control circuit 2.

本実施例のインクジェットプリンタは、高速印字走査速
度VXIを基準にし、それより遅い印字走査速度では、
印字基準信号を式(1)より得られる時間Tだけ遅延さ
せ、時間Tだけ遅延された印字基準信号に基づき印字ヘ
ッド8を駆動するようにしたので、第2図(d)に示す
ようにインク滴が適正に着弾する。
The inkjet printer of this embodiment is based on the high-speed printing scanning speed VXI, and at printing scanning speeds slower than that,
Since the print reference signal is delayed by the time T obtained from equation (1) and the print head 8 is driven based on the print reference signal delayed by the time T, the ink is Droplets land properly.

[発明の効果] 以上説明したように、本発明によれば、上記のように構
成したので、印字ムラを防止することができるという効
果がある。
[Effects of the Invention] As explained above, according to the present invention, since it is configured as described above, there is an effect that printing unevenness can be prevented.

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

第1図は本発明一実施例の液体噴射記録装置を示すブロ
ック図、 第2図は一実施例での印字基準信号に対するインク滴の
着弾位置の一例を示す図、 第3図は従来例での印字基準信号に対するインク滴着弾
位置の一例を示す図である。 1・・・印字基準信号発生器、 2・・・制御回路、 3・・・ドライバ回路、 4・・・モータ、 5・・・速度検出器、 6・・・ディレィ演算回路、 7・・・印字ヘッドドライバ、 8・・・印字ヘッド。 第2図 印字方向 第3図
FIG. 1 is a block diagram showing a liquid jet recording device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the landing position of an ink droplet with respect to a printing reference signal in an embodiment, and FIG. 3 is a diagram showing a conventional example. FIG. 3 is a diagram showing an example of ink droplet landing positions with respect to a printing reference signal of FIG. DESCRIPTION OF SYMBOLS 1...Printing reference signal generator, 2...Control circuit, 3...Driver circuit, 4...Motor, 5...Speed detector, 6...Delay calculation circuit, 7... Print head driver, 8...Print head. Figure 2 Printing direction Figure 3

Claims (1)

【特許請求の範囲】 記録ヘッドの記録走査速度を検出する速度検出手段と、 該速度検出手段により検出された記録走査速度に基づき
液体噴出タイミングを決定する決定手段と、 該決定手段により決定されたタイミングに基づき前記記
録ヘッドを駆動する駆動手段と を備えたことを特徴とする液体噴射記録装置。
[Scope of Claims] Speed detecting means for detecting the recording scanning speed of the recording head; determining means for determining liquid ejection timing based on the recording scanning speed detected by the speed detecting means; and a timing determined by the determining means. A liquid jet recording apparatus comprising: a drive means for driving the recording head based on timing.
JP12028889A 1989-05-16 1989-05-16 Liquid ejection recording device Pending JPH02299856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12028889A JPH02299856A (en) 1989-05-16 1989-05-16 Liquid ejection recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12028889A JPH02299856A (en) 1989-05-16 1989-05-16 Liquid ejection recording device

Publications (1)

Publication Number Publication Date
JPH02299856A true JPH02299856A (en) 1990-12-12

Family

ID=14782533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12028889A Pending JPH02299856A (en) 1989-05-16 1989-05-16 Liquid ejection recording device

Country Status (1)

Country Link
JP (1) JPH02299856A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100547552B1 (en) * 2001-08-27 2006-01-31 캐논 가부시끼가이샤 Inkjet recording device and method
CN1319755C (en) * 2003-05-10 2007-06-06 三星电子株式会社 Method and apparatus for aligning image of ink-jet printer
JP2017001233A (en) * 2015-06-08 2017-01-05 株式会社リコー Image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100547552B1 (en) * 2001-08-27 2006-01-31 캐논 가부시끼가이샤 Inkjet recording device and method
CN1319755C (en) * 2003-05-10 2007-06-06 三星电子株式会社 Method and apparatus for aligning image of ink-jet printer
JP2017001233A (en) * 2015-06-08 2017-01-05 株式会社リコー Image forming apparatus

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