JPS597058A - Optimizing method of excitation voltage of ink jet recorder - Google Patents
Optimizing method of excitation voltage of ink jet recorderInfo
- Publication number
- JPS597058A JPS597058A JP11664182A JP11664182A JPS597058A JP S597058 A JPS597058 A JP S597058A JP 11664182 A JP11664182 A JP 11664182A JP 11664182 A JP11664182 A JP 11664182A JP S597058 A JPS597058 A JP S597058A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- voltage
- contents
- excitation voltage
- excitation
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
- B41J2/115—Ink jet characterised by jet control synchronising the droplet separation and charging time
Abstract
Description
【発明の詳細な説明】
本発明は荷電量制御型インクジェット記録装置における
ヘッドの粒子化の制御に関し、特にサテライトの発生し
ない最適の粒子化電圧に励振電圧を自動設定可能なイン
クジェット記録装部における励4M?W圧最適化法を提
供しようとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to control of atomization in a head in a charge amount control type inkjet recording device, and in particular, to an excitation voltage in an inkjet recording device that can automatically set an excitation voltage to an optimal atomization voltage that does not generate satellites. 4M? This paper attempts to provide a W pressure optimization method.
一般に、電歪素子等により励振して、ノズルよりインク
を噴出させ、粒子化するタイプのインクジェットプリン
タにおいては、サテライトと呼ぶ小さな粒子が、基本の
粒子とは別に発生することがある。このサテライトの発
生は、励t〜電用以外にも、インク圧力、インクの粘度
、インクの温度等様々な要因によって起こされる。ヘッ
ドの励振電圧によっては、粒子化状態は低速サテライト
→等速すテライト→高途すテライト→無サテライトと変
化する。このサテライトの発生は印字を乱すので、印字
に使用できるのは無ザテライト領域であり、従来はヘッ
ドの粒子化を観測しながら最適電圧に設定していた。し
かしながら、個々のヘッドによって励振電圧−粒子化状
態の特性が異なるためその観測が大変であった。In general, in inkjet printers that eject ink from a nozzle and turn it into particles by excitation using an electrostrictive element or the like, small particles called satellites may be generated separately from the basic particles. The generation of satellites is caused by various factors other than excitation, such as ink pressure, ink viscosity, and ink temperature. Depending on the excitation voltage of the head, the particle state changes from low-velocity satellites to constant-velocity satellites to high-speed satellites to no satellites. Since the generation of these satellites disturbs printing, only the satellite-free area can be used for printing, and conventionally the optimum voltage has been set while observing the particle formation of the head. However, since the excitation voltage-particle state characteristics differ depending on the individual heads, it has been difficult to observe them.
本発明はインクジェット記録装置の励振電圧を最適値に
自動的にセットしようとするものである。The present invention attempts to automatically set the excitation voltage of an inkjet recording apparatus to an optimal value.
第1図はインクジェット記録装置におけるインクジェッ
トヘッドの励振電圧Upと噴出インク柱からインク滴が
切断される切断部MLbの関係を示し、励振7ト圧を高
ぐするにつれて切断距離は短くなり、成る励uミ電1[
−を境にして切断距離か長くなることを表わしている。Figure 1 shows the relationship between the excitation voltage Up of the inkjet head in an inkjet recording device and the cutting portion MLb where ink droplets are cut from the ejected ink column. u miden 1 [
- indicates that the cutting distance becomes longer.
次に、励Jg、電圧の一周期を8区間に分割し、それぞ
わの区間にO〜7の位相番号をイ1ける。こうして励振
電圧を変化させた時の励振位相番号の変化は第2図のよ
うになる。これは第1図に示した励振電圧に対する切断
距離Lbの変化にあわせてグラフ化したものであり、励
振電圧Upを変化させて位相検索を行ない、1位相変化
する点をプロットしたものである。このグラフかられか
る様に、励振電圧Upを上げていくにつれて位相の変化
はゆるやかになり、かつ位相番号は減少しでいく。位相
の変化か電圧変化に対して最もゆるやかになった後、励
振電圧Upの1−昇にともなって位相の変化は大きくな
り、この時点から位相番号は増加する。ずなわち切断距
離Lbが最も短くなった点が位相の切換りすなわち位相
番号の変化の変曲点となり、無サテライト領域となる。Next, one period of excitation Jg and voltage is divided into 8 sections, and a phase number of 0 to 7 is assigned to each section. FIG. 2 shows how the excitation phase number changes when the excitation voltage is changed in this way. This is a graph showing the change in the cutting distance Lb with respect to the excitation voltage shown in FIG. 1, in which a phase search is performed by changing the excitation voltage Up, and points at which the phase changes by one are plotted. As can be seen from this graph, as the excitation voltage Up is increased, the phase change becomes gradual and the phase number decreases. After the phase change becomes the most gentle with respect to voltage change, the phase change becomes larger as the excitation voltage Up increases by 1, and the phase number increases from this point on. That is, the point where the cutting distance Lb is the shortest becomes the inflection point of phase switching, that is, change of phase number, and becomes a satellite-free region.
励振電圧−位相番号変化−粒子化の状態の特性はヘッド
によって電圧値が異なるのみである。The characteristics of excitation voltage-phase number change-particulate state differ only in voltage value depending on the head.
第8図は、最適励振電圧を自動的にセットする本発明の
実施例を示すブロック図である。クロック1からの信号
を分周器2で分周し、移相回路8、バルスザイン波変換
fif4、AMp5を通して励振信号か振動子に加えら
れる。クロック1からの信号は検索パルス発生器11に
も加えられ、AMP12 、スイッチング回路18を通
して位相検索パルスが荷電電極に加えられる。スイッチ
ング回路13の切り換えにより荷電極には印字荷電信号
が加えられるようになっている。AMP t3には位相
検出電極からの検出出力が加えられるようになっており
、検出出力か得られなければカウンタ7がカウントアツ
プされ、移相回路3により励振信号を1位相移相する。FIG. 8 is a block diagram showing an embodiment of the present invention that automatically sets the optimum excitation voltage. A signal from a clock 1 is frequency-divided by a frequency divider 2, and an excitation signal is applied to the vibrator through a phase shift circuit 8, a pulse sine wave conversion fif4, and an AMp5. The signal from clock 1 is also applied to search pulse generator 11, and through AMP 12 and switching circuit 18, a phase search pulse is applied to the charged electrode. By switching the switching circuit 13, a print charge signal is applied to the charge electrode. The detection output from the phase detection electrode is applied to AMP t3, and if the detection output is not obtained, the counter 7 counts up and the phase shift circuit 3 shifts the excitation signal by one phase.
こうしてカウンタ7の内容は、検索パルスの発生時期に
インク滴が切断される位相の励振信号の位相番号となっ
ている。クロック15はノリツブフロップ14に制御さ
れる]、OOHzの発振器で、クロックパルスの立上り
でカウンタ16をカウントアツプし、カウンタ16の出
力によってAMP 5の増幅率が変更され1.OV〜4
0Vの間1vきざみて励振市1圧が得られるようになっ
ている。今、カウンタJGの内容は“0“にセットされ
ているものとし、これによりAMP 5の出力はIOV
に設定されているものとすると、位相検出電極からの検
出出力が“0“てあわ、ば、カウンタ7がカウントアツ
プされる。このため励振信号が1位相移相される。以上
の動作か検出出力が“l“となるまで繰り返される。検
出出力が得られるとカウントアツプが停止され、コンパ
レータ9てカウンタ7の内容と記憶回路8にrしめ記憶
された内容とが比較され、一致していないのでカウンタ
7の内容が新たに記憶される。これを繰り返すと、第2
図かられかるように、励振電圧か19Vになると位相番
号8かカウンタ7の内容となり、記憶の内容も8となる
。次にクロック]5の出力の立上りてカウンタ16がカ
ウントアツプされ、励振電圧か20Vに設定される。第
2図から明らかなように、19Vと同じ位相番号8て位
相検索の出力か得られることとなる。このためカウンタ
7の内容と記憶内容が一致し、一致出力が得られること
になり、これによりフリップフロップj0かセットされ
る。次に1 v Djh 振電圧か高められても、第2
図かられかるように同様に一致出力が得られる。これが
繰り返され、励J7i? 71圧か24Vになると位相
番号が4で位相検出出力か得られることとなる。これに
よりコンパレータ9てカウンタ7の内容と記憶回路の内
容とが比較され、カウンタの内容が記憶内容より初めて
人きくなり、コンパレータ9から出力が得られてフリッ
プフロップ14がセットされ、クロック15の出力が停
止されてカウンタ16の内容が保持される。同時に加算
器17に6の補数が供給され、カウンタの内容か6たけ
汁しられて励振信号の電圧は約18Vに自動的に設定さ
れる。コンパレータ19は、カウンタ7の内容とスイッ
チ18により指定されている内容とを比較し、カウンタ
の内容がスイッチの内容より人きけれはモノマルチ20
、ドライバー21を通してインク希釈液の補給指令を出
し、インクを常に適正な粘度に調整している。Thus, the content of the counter 7 is the phase number of the excitation signal of the phase in which the ink droplet is cut off at the time when the search pulse is generated. The clock 15 is controlled by the Noritsubu flop 14], is an OOHz oscillator, and counts up a counter 16 at the rising edge of the clock pulse, and the amplification factor of the AMP 5 is changed by the output of the counter 16. OV~4
During 0V, one excitation pressure can be obtained in 1V increments. It is now assumed that the contents of counter JG are set to "0", so that the output of AMP 5 is IOV
When the detection output from the phase detection electrode becomes "0", the counter 7 counts up. Therefore, the excitation signal is shifted by one phase. The above operations are repeated until the detection output becomes "1". When the detection output is obtained, the count-up is stopped, and the comparator 9 compares the contents of the counter 7 with the contents stored in the memory circuit 8. Since they do not match, the contents of the counter 7 are newly stored. . If you repeat this, the second
As can be seen from the figure, when the excitation voltage reaches 19V, the phase number becomes 8 or the contents of the counter 7, and the stored contents also become 8. Next, when the output of the clock [5] rises, the counter 16 counts up and the excitation voltage is set to 20V. As is clear from FIG. 2, the output of the phase search is obtained at phase number 8, which is the same as 19V. Therefore, the contents of the counter 7 and the stored contents match, and a matching output is obtained, thereby setting the flip-flop j0. Next, even if the oscillating voltage is increased by 1 v Djh, the second
As can be seen from the figure, matching outputs are similarly obtained. This is repeated and Yu J7i? When the voltage is 71 or 24V, the phase number is 4 and a phase detection output is obtained. As a result, the comparator 9 compares the contents of the counter 7 with the contents of the memory circuit, and the contents of the counter become better than the contents of the memory for the first time, an output is obtained from the comparator 9, the flip-flop 14 is set, and the clock 15 is output. is stopped and the contents of the counter 16 are held. At the same time, the adder 17 is supplied with a 6's complement number, the contents of the counter are determined by 6, and the voltage of the excitation signal is automatically set to about 18V. The comparator 19 compares the content of the counter 7 with the content specified by the switch 18, and if the content of the counter is louder than the content of the switch, the monomulti 20
, issues a replenishment command for the ink diluent through the driver 21, and constantly adjusts the ink to an appropriate viscosity.
以上のように本発明によれば無サテライト領域になる様
に励振電圧か自動的にセットさね、ヘツドの組1γハラ
ツギ、経時変15等による励振電圧とオ′1ンJ’ I
ISの1、冒1ノド変動があっても最適な市、圧をヘッ
ドに印加することかてきる。As described above, according to the present invention, the excitation voltage is automatically set so as to be in a satellite-free region, and the excitation voltage and ON J'
Even if the IS fluctuates by 1 or 1 degree, it is possible to apply the optimum pressure to the head.
第1図は励振電圧と切山]距離の関係を示す図、第2図
は励Jf(電圧と励振位相番号の変化の関係を示す図、
第3図は本発明の実施例のブロツク図である。
1・・クロック発生器、8・・・移相回路、44・・パ
ルスザイ波変換器、5.6、]2・・APM 、 7.
16・・・カウンタ、8・・記憶回路、9・・コンパレ
ータ、1O114・・・・フリップフロップ、]1・・
・倹素パルス発生器、17・加W器。Figure 1 is a diagram showing the relationship between excitation voltage and cutoff distance; Figure 2 is a diagram showing the relationship between excitation Jf (voltage and change in excitation phase number);
FIG. 3 is a block diagram of an embodiment of the invention. 1...Clock generator, 8...Phase shift circuit, 44...Pulse wave converter, 5.6, ]2...APM, 7.
16...Counter, 8...Memory circuit, 9...Comparator, 1O114...Flip-flop, ]1...
・Frugal pulse generator, 17・W adder.
Claims (1)
噴出させ、このインク粒子を画信号に応じて偏向し、記
録体に印写するインクジェット記録装置において、励振
電圧を変える手段とインク滴分離位相を検出する手段を
備え、インク滴分離位相の変曲点の励振電圧から所定の
電圧差に励振電圧を設定するインクジェット記録装腸に
おける励振電圧最適化法In an inkjet recording device that excites a head to which pressurized ink is supplied to eject ink particles, deflects the ink particles according to an image signal, and prints them on a recording medium, a means for changing the excitation voltage and ink droplet separation are used. An excitation voltage optimization method for an inkjet recording intestine, which includes means for detecting the phase and sets the excitation voltage to a predetermined voltage difference from the excitation voltage at the inflection point of the ink droplet separation phase.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11664182A JPS597058A (en) | 1982-07-05 | 1982-07-05 | Optimizing method of excitation voltage of ink jet recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11664182A JPS597058A (en) | 1982-07-05 | 1982-07-05 | Optimizing method of excitation voltage of ink jet recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS597058A true JPS597058A (en) | 1984-01-14 |
Family
ID=14692231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11664182A Pending JPS597058A (en) | 1982-07-05 | 1982-07-05 | Optimizing method of excitation voltage of ink jet recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597058A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989003768A2 (en) * | 1987-10-30 | 1989-05-05 | Linx Printing Technologies Limited | Ink jet printer |
WO1990013431A1 (en) * | 1989-05-08 | 1990-11-15 | Domino Printing Sciences Plc | Continuous ink jet printing |
JPH04127712U (en) * | 1991-05-09 | 1992-11-20 | バンドー化学株式会社 | conveyor belt |
US11396149B2 (en) | 2017-01-26 | 2022-07-26 | Forbo Siegling Gmbh | Method for producing and/or recycling a conveyor belt, and conveyor belt |
-
1982
- 1982-07-05 JP JP11664182A patent/JPS597058A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989003768A2 (en) * | 1987-10-30 | 1989-05-05 | Linx Printing Technologies Limited | Ink jet printer |
WO1989003768A3 (en) * | 1987-10-30 | 1989-06-15 | Linx Printing Tech | Ink jet printer |
GB2236713A (en) * | 1987-10-30 | 1991-04-17 | Linx Printing Tech | Ink jet printer |
GB2236713B (en) * | 1987-10-30 | 1992-08-12 | Linx Printing Tech | Ink jet printer |
US5455606A (en) * | 1987-10-30 | 1995-10-03 | Linx Printing Technologies Plc | Ink jet printer with control |
US5481288A (en) * | 1987-10-30 | 1996-01-02 | Linx Printing Technologies Plc | Modulation signal amplitude adjustment for an ink jet printer |
WO1990013431A1 (en) * | 1989-05-08 | 1990-11-15 | Domino Printing Sciences Plc | Continuous ink jet printing |
JPH04127712U (en) * | 1991-05-09 | 1992-11-20 | バンドー化学株式会社 | conveyor belt |
US11396149B2 (en) | 2017-01-26 | 2022-07-26 | Forbo Siegling Gmbh | Method for producing and/or recycling a conveyor belt, and conveyor belt |
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