JPH04259580A - Image recorder - Google Patents
Image recorderInfo
- Publication number
- JPH04259580A JPH04259580A JP1993791A JP1993791A JPH04259580A JP H04259580 A JPH04259580 A JP H04259580A JP 1993791 A JP1993791 A JP 1993791A JP 1993791 A JP1993791 A JP 1993791A JP H04259580 A JPH04259580 A JP H04259580A
- Authority
- JP
- Japan
- Prior art keywords
- recording material
- recording
- conveyance
- speed
- amount
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 109
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000004044 response Effects 0.000 claims description 2
- 230000037303 wrinkles Effects 0.000 abstract description 12
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000007639 printing Methods 0.000 description 42
- 239000000976 ink Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Handling Of Sheets (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は画像信号に応じて記録材
上に画像を記録する画像記録装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for recording an image on a recording material in accordance with an image signal.
【０００２】0002
【従来の技術】従来より様々な画像形成手段を用いた記
録装置が実用化され、特に多色画像形成についてはイン
クジエツト記録装置が注目されている。インクジエツト
記録装置はインクを液滴として記録ヘツドノズルから吐
出し、ドツト記録を行なう記録方式で、装置構成、ラン
ニングコストなどの点で有利な記録方式である。2. Description of the Related Art Conventionally, recording apparatuses using various image forming means have been put into practical use, and inkjet recording apparatuses have attracted particular attention for multicolor image formation. An inkjet recording device is a recording method in which ink is ejected as droplets from a recording head nozzle to perform dot recording, and is an advantageous recording method in terms of device configuration, running cost, etc.
【０００３】一方、記録材に対する要求も様々なものが
あり、通常の記録材である紙、ＯＨＰに用いられる透明
フイルムに加え近年記録材として織布等に対する要求も
高まっている。On the other hand, there are various demands for recording materials, and in addition to paper, which is a normal recording material, and transparent film used in OHP, there has been an increasing demand for woven fabrics and the like as recording materials in recent years.
【０００４】この様な記録装置における記録材の搬送機
構としては、印字部をはさんで上流側及び下流側にロー
ラ等の搬送手段を設け、両搬送手段により協働して記録
材に適度なテンシヨンを作用させながら搬送するものが
用いられていた。[0004] As a conveyance mechanism for the recording material in such a recording apparatus, conveyance means such as rollers are provided on the upstream and downstream sides of the printing section, and both conveyance means work together to convey the recording material to an appropriate level. A device that conveyed the material while applying tension was used.
【０００５】[0005]
【発明が解決しようとする課題】しかしながらこの様な
搬送機構において、上流側搬送手段及び下流側搬送手段
による記録材の搬送量が設定量よりもズレた場合、記録
材に伸びやシワが生じることがあり、特に記録材として
織布を用いた場合、紙やＯＨＰにくらべ搬送時に伸びや
シワを生じやすい欠点がある。[Problem to be Solved by the Invention] However, in such a conveyance mechanism, if the amount of conveyance of the recording material by the upstream conveyance means and the downstream conveyance means deviates from the set amount, stretching or wrinkles may occur in the recording material. In particular, when woven fabric is used as a recording material, it has the disadvantage that it tends to stretch and wrinkle during transportation compared to paper or OHP.
【０００６】即ち印字中の記録材に加わる張力が変動す
ると記録材が伸縮する。その状態で記録が行なわれると
、記録材が記録装置から排出され伸びが元に戻った時に
印字された画像の局所的な歪や濃度変化を生じ画像品位
が著しく低下する。この様な欠点は記録材として織布を
用いた場合特に顕著となる。That is, when the tension applied to the recording material during printing changes, the recording material expands and contracts. If recording is performed in this state, when the recording material is ejected from the recording apparatus and the elongation returns to its original state, local distortion and density changes will occur in the printed image, resulting in a significant deterioration in image quality. Such drawbacks become particularly noticeable when woven fabric is used as the recording material.
【０００７】同様に搬送時に記録材に加わる張力が小さ
いと、記録材にシワやたるみが発生する。通常インクジ
エツト記録装置の記録ヘツドとプラテン間の距離は０．
５〜１ｍｍとごくわずかであるため、記録材とヘツドが
画像形成中に接触し画像品位を著しく低下させるだけで
なく、最悪の場合は記録材がヘツド、プラテン間に詰ま
り画像形成が困難になる場合もある。Similarly, if the tension applied to the recording material during transportation is small, wrinkles and sagging occur in the recording material. Normally, the distance between the recording head and platen of an inkjet recording device is 0.
Since the thickness is very small (5 to 1 mm), the recording material and the head come into contact during image formation, which not only significantly reduces the image quality, but in the worst case, the recording material becomes clogged between the head and the platen, making it difficult to form an image. In some cases.
【０００８】本発明は上記点に鑑みてなされたもので、
その目的とするところは、搬送時における記録材の伸び
やシワ等による詰まり等の搬送不良の発生を防止し且つ
記録画像品位の低下を防止することが可能な画像記録装
置を提供することにある。The present invention has been made in view of the above points, and
The purpose is to provide an image recording device that can prevent transport defects such as clogging due to elongation or wrinkles of the recording material during transport, and prevent deterioration of recorded image quality. .
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明の画像記録装置は以下の構成からなる。[Means for Solving the Problems] In order to achieve the above object, an image recording apparatus of the present invention has the following configuration.
【００１０】即ち、記録位置の上流側に設けられた第１
の記録材搬送手段、前記記録位置の下流側に設けられた
第２の記録材搬送手段、前記第１の記録材搬送手段及び
前記第２の記録材搬送手段のうちの少なくとも一方によ
る記録材の搬送量を検出する検出手段、前記検出手段の
検出出力に応じて記録材の伸び量を一定に制御する制御
手段、を有するものである。That is, the first
of the recording material by at least one of the recording material conveying means, the second recording material conveying means provided downstream of the recording position, the first recording material conveying means, and the second recording material conveying means. The apparatus includes a detection means for detecting the conveyance amount, and a control means for controlling the elongation amount of the recording material to be constant according to the detection output of the detection means.
【００１１】以上の構成において、記録位置を挟んで上
流側及び下流側に設けられた記録材搬送手段により記録
材を搬送する際、記録材の伸び量を一定に維持する。In the above configuration, when the recording material is conveyed by the recording material conveying means provided on the upstream and downstream sides of the recording position, the amount of elongation of the recording material is maintained constant.
【００１２】0012
【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。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
【００１３】図１は本発明を適用したインクジエツト記
録装置の斜視図、図２は制御部の概略構成を示すブロツ
ク図であり、同一番号を付けたものは同一の部材である
。図に於て１は長尺の記録材のロールであり、例えば織
布である。記録材１は印字部上流側の一対の搬送ローラ
２及び印字部下流側の一対の搬送ローラ３によって搬送
される。４は記録ヘツドを表わし本実施例では多色画像
を形成するため、イエロー（４ーＹ）、シアン（４ーＣ
）、マゼンタ（４ーＭ）、ブラツク（４ーＢｋ）、の４
本の記録ヘツドで構成されている。同ヘツドはキヤリツ
ジ５に搭載され、レール６上を記録材の搬送方向と直角
方向にシリアルスキヤンしながら原稿に応じた画像信号
に基づいてインクの液滴を発射して画像形成を行なう。
７は記録ヘツドに対向したプラテンで、本実施例では記
録ヘツドとの距離が０．７ｍｍに設定されている。
画像を形成された記録材１は排出ローラ８を経て機外に
排出される。一方９は印字を行なう画像の画像信号を発
生する信号発生装置で、同装置で発生した画像信号に応
じて記録ヘツド４が画像形成を行なう。FIG. 1 is a perspective view of an inkjet recording apparatus to which the present invention is applied, and FIG. 2 is a block diagram showing a schematic configuration of a control section, where the same numbers indicate the same members. In the figure, reference numeral 1 indicates a roll of a long recording material, for example, a woven fabric. The recording material 1 is conveyed by a pair of conveyance rollers 2 on the upstream side of the printing section and a pair of conveyance rollers 3 on the downstream side of the printing section. 4 represents a recording head, and in this embodiment, in order to form a multicolor image, yellow (4-Y) and cyan (4-C) are used.
), magenta (4-M), black (4-Bk), 4
It consists of a book recording head. The head is mounted on a carriage 5, and performs image formation by ejecting ink droplets based on an image signal corresponding to an original while serially scanning on a rail 6 in a direction perpendicular to the conveying direction of the recording material. A platen 7 faces the recording head, and in this embodiment, the distance from the recording head is set to 0.7 mm. The recording material 1 on which the image has been formed is discharged to the outside of the machine via a discharge roller 8. On the other hand, 9 is a signal generating device that generates an image signal of an image to be printed, and the recording head 4 forms an image in response to the image signal generated by the device.
【００１４】本実施例における記録ヘツドは、複数の吐
出口と、各吐出口に対応した複数の液路と、複数の液路
に内部にインク室を連通した共通のインク室をもち、各
液路内にはインク吐出用の発熱素子が設けられている。
そして画像信号に応じて発熱素子を駆動することにより
インク内に気泡を発生させ、この気泡による状態変化に
よりインクを吐出口から吐出するものである。The recording head in this embodiment has a plurality of ejection ports, a plurality of liquid paths corresponding to each ejection port, and a common ink chamber in which an ink chamber is communicated with the plurality of liquid paths. A heating element for ejecting ink is provided within the path. Bubbles are generated in the ink by driving a heating element in accordance with an image signal, and the ink is ejected from the ejection port due to the change in state caused by the air bubbles.
【００１５】又、１０は、下流側搬送ローラ３を駆動す
るためのパルスモータ、１１は上流側搬送ローラ１１を
駆動するためのパルスモータ、１２は下流側搬送ローラ
３の回転に伴うローラの周面の移動速度をレーザ光によ
り測定する回転速度検出装置（ＬＤＶ）、１３は回転速
度検出装置１２の出力信号を積分して、搬送ローラ３に
よる搬送量を求める演算装置、１４は上流側搬送ローラ
２の回転に伴うローラの周面の移動速度をレーザ光によ
り測定する回転速度検出装置（ＬＤＶ）、１５は回転速
度検出装置１４の出力信号を積分して搬送ローラ２によ
る搬送量を求める演算装置、１６はＲＯＭ、ＲＡＭ等を
内蔵した周知のワンチツプマイクロコンピユータを中心
に構成された中央演算装置であり、本実施例では記録材
の伸び量及び記録材の搬送速度を適正に保つべく、回転
速度検出装置１２からの出力信号及び演算装置１３、１
５からの出力信号に基づいて、モータ１０、１１の駆動
パルス数を制御する。Further, 10 is a pulse motor for driving the downstream conveyance roller 3, 11 is a pulse motor for driving the upstream conveyance roller 11, and 12 is a pulse motor for driving the downstream conveyance roller 3 as it rotates. A rotational speed detection device (LDV) that measures the moving speed of the surface using a laser beam, 13 an arithmetic device that integrates the output signal of the rotational speed detection device 12 and calculates the amount of transportation by the conveyance roller 3, and 14 an upstream conveyance roller. 2 is a rotational speed detection device (LDV) that measures the moving speed of the circumferential surface of the roller as it rotates using a laser beam; 15 is a calculation device that integrates the output signal of the rotational speed detection device 14 and calculates the conveyance amount by the conveyance roller 2; , 16 is a central processing unit mainly composed of a well-known one-chip microcomputer with built-in ROM, RAM, etc. In this embodiment, in order to keep the elongation of the recording material and the conveyance speed of the recording material appropriate, Output signal from speed detection device 12 and calculation device 13, 1
The number of driving pulses of the motors 10 and 11 is controlled based on the output signal from the motor 5.
【００１６】次に本実施例装置において記録材に画像を
記録する際の動作を説明する。Next, the operation of recording an image on a recording material in the apparatus of this embodiment will be explained.
【００１７】記録材１はまず印字部下流側のローラ３迄
引き出してセツトされる。画像形成の際には、最初に印
字部下流側の搬送ローラ３を駆動モータ１０によって駆
動し、印字部での記録材のシワやたるみを除き斜行を矯
正する。印字部下流側の搬送ローラ３には、前述の如く
ＬＤＶ１２が取り付けられている。ＬＤＶ１１の出力信
号を演算装置１３で積分することで印字部下流側の搬送
ローラ３による記録材の搬送量を計算する。印字部下流
側の搬送ローラ３による記録材１の搬送量が所定量に達
し、印字部での記録材のシワやたるみを取り除いた時点
で、印字部上流側の搬送ローラ２を駆動モータ１１で駆
動し、印字部上流側に於ても記録材１の搬送を開始する
。印字部上流側の搬送ローラ２にも下流側と同様にＬＤ
Ｖ１４が取り付けられており、同装置の出力を演算装置
１５で積分して印字部上流側での搬送ローラ２による記
録材１の搬送量を計算する。The recording material 1 is first pulled out to the roller 3 on the downstream side of the printing section and set. When forming an image, first the conveyance roller 3 downstream of the printing section is driven by the drive motor 10 to remove wrinkles and sagging of the recording material at the printing section and correct skew. As described above, the LDV 12 is attached to the conveyance roller 3 on the downstream side of the printing section. The output signal of the LDV 11 is integrated by the arithmetic unit 13 to calculate the amount of conveyance of the recording material by the conveyance roller 3 on the downstream side of the printing section. When the conveyance amount of the recording material 1 by the conveyance roller 3 on the downstream side of the printing section reaches a predetermined amount and the wrinkles and slack of the recording material in the printing section are removed, the conveyance roller 2 on the upstream side of the printing section is moved by the drive motor 11. The recording material 1 is then driven to start conveying the recording material 1 also on the upstream side of the printing section. There is also an LD on the conveyance roller 2 on the upstream side of the printing section as well as on the downstream side.
V14 is attached, and the output of the device is integrated by a calculation device 15 to calculate the amount of conveyance of the recording material 1 by the conveyance roller 2 on the upstream side of the printing section.
【００１８】図３は中央演算装置１６が行なう制御の流
れを示すフローチヤートである。この制御は動作中繰返
し実行されているものである。FIG. 3 is a flowchart showing the flow of control performed by the central processing unit 16. This control is repeatedly executed during operation.
【００１９】以下このフローチヤートに従って動作説明
する。The operation will be explained below according to this flowchart.
【００２０】印字部上流側及び下流側の搬送ローラによ
る記録材の搬送量は中央演算装置１６により、記録動作
中、随時モニターされている（ステツプＳ１）。そして
印字開始後に印字部での記録材のシワやたるみを取り除
くため記録材の搬送量をＸとし、任意時間経過後の印字
部下流側での記録材の搬送量をＬ１とすると、同時刻に
おける印字開始後からの印字部上流側での記録材の搬送
量Ｌ２はＬ２＝Ｌ１ーＸになる様に中央演算装置１６に
より印字部上流側の搬送ローラ２の駆動モータ１１の駆
動パルス数を制御する。即ち印字中は随時中央演算装置
１６が印字部上流及び下流側での記録材の搬送量をモニ
ターし、印字開始後からの両ローラの記録材の搬送量の
差（Ｌ１ーＬ２）を常にＸに保つ様印字部上流側の搬送
ローラ２の記録材の搬送量を制御する。具体的には、Ｌ
１ーＬ２＜Ｘの場合、記録材の伸び量を大きくするべく
駆動モータ１１の駆動パルス数をダウンさせる。又Ｌ１
ーＬ２＞Ｘの場合、記録材の伸び量を小さくするべく駆
動モータ１１の駆動パルス数をアツプさせる（ステツプ
Ｓ２）。更に、印字部下流側の搬送ローラ３は印字中自
身に取り付けられている回転速度検出装置１２の出力か
ら得られる記録材１の搬送速度Ｖ１を一定に保つ様中央
演算装置により制御される。即ち速度Ｖ１が記録速度に
応じた速度Ｖｔｈより小の場合、駆動モータ１０の駆動
パルス数をアツプさせ、速度Ｖ１がＶｔｈより大の場合
駆動モータ１０の駆動パルス数をダウンさせる（ステツ
プＳ３）。The amount of conveyance of the recording material by the conveyance rollers on the upstream and downstream sides of the printing section is constantly monitored by the central processing unit 16 during the recording operation (step S1). Then, if the conveyance amount of the recording material in order to remove wrinkles and slack of the recording material in the printing section after printing starts is X, and the conveyance amount of the recording material on the downstream side of the printing section after an arbitrary time has elapsed is L1, then at the same time The central processing unit 16 controls the number of drive pulses of the drive motor 11 of the conveyance roller 2 on the upstream side of the printing section so that the conveyance amount L2 of the recording material on the upstream side of the printing section after the start of printing becomes L2 = L1 - X. do. That is, during printing, the central processing unit 16 monitors the conveyance amount of the recording material on the upstream and downstream sides of the printing section at any time, and always calculates the difference (L1 - L2) between the conveyance amount of the recording material between the two rollers after the start of printing by X. The conveyance amount of the recording material by the conveyance roller 2 on the upstream side of the printing section is controlled so as to maintain the conveyance amount of the recording material. Specifically, L
If 1-L2<X, the number of drive pulses of the drive motor 11 is decreased in order to increase the amount of elongation of the recording material. Also L1
- If L2>X, the number of drive pulses of the drive motor 11 is increased in order to reduce the amount of elongation of the recording material (step S2). Further, the conveyance roller 3 on the downstream side of the printing section is controlled by the central processing unit so as to keep constant the conveyance speed V1 of the recording material 1 obtained from the output of the rotational speed detection device 12 attached to itself during printing. That is, if the speed V1 is smaller than the speed Vth corresponding to the recording speed, the number of drive pulses of the drive motor 10 is increased, and if the speed V1 is greater than Vth, the number of drive pulses of the drive motor 10 is decreased (step S3).
【００２１】上記の記録材の搬送量の制御を行なうこと
で、記録材の搬送速度を適正に保ち更に記録動作中の記
録材の印字部での伸びは常に一定に保たれる。By controlling the amount of conveyance of the recording material as described above, the conveyance speed of the recording material can be maintained at an appropriate level, and furthermore, the elongation of the recording material at the print portion during recording operation can be kept constant.
【００２２】次に本発明の別の実施例について説明する
。図４は本実施例の制御部を示すブロツク図であり、図
２と同一番号を付けたものは同一構成部材である。先の
実施例では上流側及び下流側の両搬送ローラの速度を検
出する構成であったが、本実施例では略一定速度で回転
する下流側搬送ローラ３のみの回転速度をＬＤＶ１２に
より検出する構成となっている。そして下流側搬送ロー
ラ３の回転速度を積分することにより得られる搬送量に
応じて中央演算装置１６は上流側搬送ローラ２の記録材
搬送量が制御される。Next, another embodiment of the present invention will be described. FIG. 4 is a block diagram showing the control section of this embodiment, and the same components as those in FIG. 2 are denoted by the same numbers. In the previous embodiment, the speeds of both the upstream and downstream conveyance rollers were detected, but in this embodiment, the LDV 12 detects the rotational speed of only the downstream conveyance roller 3, which rotates at a substantially constant speed. It becomes. Then, the central processing unit 16 controls the recording material conveyance amount of the upstream conveyance roller 2 according to the conveyance amount obtained by integrating the rotational speed of the downstream conveyance roller 3 .
【００２３】図５は本実施例における制御の流れを示す
フローチヤートである。この制御も動作中中央演算装置
１６により繰り返し実行される。以下このフローチヤー
トに従い動作説明する。FIG. 5 is a flow chart showing the flow of control in this embodiment. This control is also repeatedly executed by the central processing unit 16 during operation. The operation will be explained below according to this flowchart.
【００２４】下流側搬送ローラ３の回転速度Ｖ１及び下
流側搬送ローラ３による搬送量Ｌ１は記録動作中随時モ
ニタされる（ステツプＳ１′）。そしてこのモニタされ
た搬送量Ｌ１に応じて上流側搬送ローラ２の駆動モータ
１０の駆動パルス数を中央演算装置１０内のＲＯＭテー
ブルから読出し、駆動モータ１０に出力する（ステツプ
Ｓ２′）。尚このＲＯＭテーブルには予め下流側搬送ロ
ーラ３の搬送量Ｌ１に応じて、印字部での記録材のシワ
やたるみを取り除くための搬送量Ｘが得られる様な上流
側搬送ローラ２の搬送量データが格納されているもので
ある。The rotation speed V1 of the downstream conveyance roller 3 and the conveyance amount L1 by the downstream conveyance roller 3 are monitored at any time during the recording operation (step S1'). Then, in accordance with the monitored transport amount L1, the number of driving pulses for the drive motor 10 of the upstream transport roller 2 is read from the ROM table in the central processing unit 10 and output to the drive motor 10 (step S2'). Note that this ROM table has in advance the conveyance amount of the upstream conveyance roller 2 such that the conveyance amount X for removing wrinkles and slack of the recording material in the printing section can be obtained according to the conveyance amount L1 of the downstream conveyance roller 3. This is where data is stored.
【００２５】そして次に先の実施例の場合と同様に搬送
速度Ｖ１の制御が行なわれる。Next, the conveyance speed V1 is controlled in the same manner as in the previous embodiment.
【００２６】この様に制御を行なっても、先の実施例の
場合と同様に、記録材の搬送速度を適正に保ち、更に記
録動作中の記録材の印字部での伸び量を適正に保つこと
ができる。Even if such control is performed, as in the case of the previous embodiment, the conveyance speed of the recording material can be maintained at an appropriate level, and the amount of elongation of the recording material at the printing section during the recording operation can also be maintained at an appropriate level. be able to.
【００２７】尚、上記実施例に於ては、記録開始後に印
字部下流側の搬送ローラの記録材の搬送量にあわせて印
字部上流側の搬送ローラの記録材の搬送量を制御してい
るが、例えば印字部上流側の搬送ローラによる記録材の
搬送量にあわせて印字部下流側の搬送ローラの記録材の
搬送量を制御してもよい。In the above embodiment, after the start of recording, the conveyance amount of the recording material by the conveyance roller on the upstream side of the printing section is controlled in accordance with the conveyance amount of the recording material on the conveyance roller on the downstream side of the printing section. However, for example, the conveyance amount of the recording material by the conveyance roller on the downstream side of the printing section may be controlled in accordance with the conveyance amount of the recording material by the conveyance roller on the upstream side of the printing section.
【００２８】更に記録材に適切な伸びを与えるために、
本実施例では印字開始直後に印字部下流側の搬送ローラ
で記録材を搬送することで印字部での記録材のシワやた
るみを除去しているが、例えば印字開始直後に印字部下
流側の搬送ローラを固定しておき、印字部上流側の搬送
ローラで記録材を搬送方向と逆方向に搬送して印字部で
の記録材のシワやたるみを除去しても良い。Furthermore, in order to give the recording material appropriate elongation,
In this embodiment, the wrinkles and sagging of the recording material in the printing section are removed by transporting the recording material with the conveyance roller downstream of the printing section immediately after the start of printing. The conveyance roller may be fixed, and the recording material may be conveyed in a direction opposite to the conveyance direction by the conveyance roller upstream of the printing section to remove wrinkles or slack in the recording material at the printing section.
【００２９】又上記実施例では搬送ローラによって搬送
される記録材の搬送量をレーザ光を用いた回転数検出装
置を用いているが、例えばローラの回転角に比例したパ
ルスを発生する装置（例えばロータリーエンコーダ）な
どを用いてもよい。その場合は印字部の上流及び下流側
での搬送ローラの直径に差があると、記録材の伸びを一
定に保てないので両搬送ローラの搬送量に対する回転角
を予め測定しておき、記録材の搬送量を求める際に補正
を行なう必要がある。Further, in the above embodiment, a rotation speed detection device using a laser beam is used to detect the conveyance amount of the recording material conveyed by the conveyance roller, but for example, a device that generates a pulse proportional to the rotation angle of the roller (for example, A rotary encoder) or the like may also be used. In that case, if there is a difference in the diameter of the conveyance rollers on the upstream and downstream sides of the printing section, the elongation of the recording material cannot be kept constant. It is necessary to make corrections when calculating the conveyance amount of material.
【００３０】また、本発明は圧電素子をインク吐出エネ
ルギ源として用いたいわゆるピエゾ式のインクジエツト
記録装置にも適用できる。The present invention can also be applied to a so-called piezo-type ink jet recording apparatus that uses a piezoelectric element as an ink ejection energy source.
【００３１】なお、本実施例は、特にインクジエツト記
録方式の中でも熱エネルギーを利用してインクを吐出す
る方式のインクジエツト記録ヘツド、記録装置について
説明したが、かかる方式によれば記録の高密度化、高精
細化が達成できる。In this embodiment, an inkjet recording head and a recording apparatus, which use thermal energy to eject ink among the inkjet recording methods, have been particularly explained. High definition can be achieved.
【００３２】その代表的な構成や原理については、例え
ば米国特許第４７２３１２９号明細書、同第４７４０７
９６号明細書に開示されている基本的な原理を用いて行
なうものが好ましい。この方式は所謂オンデマンド型、
コンテイニユアス型のいずれにも適用可能であるが、特
に、オンデマンド型の場合には、液体（インク）が保持
されているシートや液路に対応して配置されている電気
熱変換体に、記録情報に対応していて核沸騰を越える急
速な温度上昇を与える少なくとも１つの駆動信号を印加
することによって、電気熱変換体に熱エネルギを発生せ
しめ、記録ヘツドの熱作用面に膜沸騰を生じさせて、結
果的にこの駆動信号に一対一で対応した液体（インク）
内の気泡を形成できるので有効である。この気泡の成長
、収縮により吐出用開口を介して液体（インク）を吐出
させて、少なくとも１つの滴を形成する。この駆動信号
をパルス形状とすると、即時適切に気泡の成長収縮が行
なわれるので、特に応答性に優れた液体（インク）の吐
出が達成でき、より好ましい。このパルス形状の駆動信
号としては、米国特許第４４６３３５９号明細書、同第
４３４５２６２号明細書に記載されているようなものが
適している。なお、上記熱作用面の温度上昇率に関する
発明の米国特許第４３１３１２４号明細書に記載されて
いる条件を採用すると、さらに優れた記録を行なうこと
ができる。For its typical configuration and principle, see, for example, US Pat. Nos. 4,723,129 and 47,407.
Preferably, the method is carried out using the basic principle disclosed in the '96 specification. This method is the so-called on-demand type.
It can be applied to any continuous type, but in particular, in the case of an on-demand type, it can be applied to the electrothermal converter placed corresponding to the sheet holding the liquid (ink) or the liquid path. , by applying at least one drive signal corresponding to recorded information and providing a rapid temperature rise above nucleate boiling, the electrothermal transducer generates thermal energy to produce film boiling on the thermally active surface of the recording head. liquid (ink) that corresponds one-to-one to this drive signal.
This is effective because it can form air bubbles inside. The growth and contraction of the bubble causes liquid (ink) to be ejected through the ejection opening to form at least one droplet. It is more preferable to use this drive signal in a pulse form, since the growth and contraction of bubbles can be carried out immediately and appropriately, so that ejection of liquid (ink) with particularly excellent responsiveness can be achieved. As this pulse-shaped drive signal, those described in US Pat. No. 4,463,359 and US Pat. No. 4,345,262 are suitable. Furthermore, if the conditions described in US Pat. No. 4,313,124 concerning the invention regarding the temperature increase rate of the heat acting surface are adopted, even more excellent recording can be performed.
【００３３】記録ヘツドの構成としては、上述の各明細
書に開示されているような吐出口、液路、電気熱変換体
の組合せ構成（直線状液流路または直角液流路）の他に
熱作用部が屈曲する領域に配置されている構成を開示す
る米国特許第４５５８３３３号明細書、米国特許第４４
５９６００号明細書を用いた構成も本発明に含まれるも
のである。加えて、複数の電気熱変換体に対して、共通
するスリツトを電気熱変換体の吐出部とする構成を開示
する特開昭５９ー１２３６７０号公報や熱エネルギの圧
力波を吸収する開孔を吐出部に対応させる構成を開示す
る特開昭５９ー１３８４６１号公報に基づいた構成とし
ても良い。In addition to the configuration of the recording head, in addition to the combination configuration of the ejection port, liquid path, and electrothermal converter (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 44 disclose a configuration in which a heat acting part is arranged in a bending region.
A configuration using the specification of No. 59600 is also included in the present invention. In addition, Japanese Patent Laid-Open No. 123670/1983 discloses a configuration in which a common slit is used as a discharge part for a plurality of electrothermal converters, and a hole that absorbs pressure waves of thermal energy is disclosed. The structure may be based on Japanese Patent Application Laid-Open No. 138461/1983 which discloses a structure corresponding to the discharge section.
【００３４】さらに、記録装置が記録できる記録媒体の
最大幅に対応した長さを有するフルラインタイプの記録
ヘツドに対しても本発明は有効に適用できる。そのよう
な記録ヘツドとしては、複数記録ヘツドの組合せによっ
てその長さを満たす構成や、一体的に形成された１個の
記録ヘツドとしての構成のいずれでもよい。加えて、上
例のようなシリアルタイプのものでも装置本体に装着さ
れることで、装置本体との電気的な接続や装置本体から
のインクの供給が可能になる交換自在のチツプタイプの
記録ヘツド、あるいは記録ヘツド自体に一体的に設けら
れたカートリツジタイプの記録ヘツドを用いた場合にも
本発明は有効である。Furthermore, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by a recording apparatus. Such a recording head may have either a configuration in which the length is satisfied by a combination of a plurality of recording heads, or a configuration as one integrally formed recording head. In addition, even serial type recording heads such as those mentioned above can be installed in the main body of the device to enable electrical connection with the main body of the device and supply of ink from the main body of the device, allowing for replaceable chip type recording heads. Alternatively, the present invention is also effective when using a cartridge type recording head that is integrally provided with the recording head itself.
【００３５】また、本発明に記録装置の構成として設け
られる、記録ヘツドに対しての回復手段、予備的な補助
手段等を付加することは記録安定化のために好ましいも
のである。これらを具体的に挙げれば、記録ヘツドに対
してのキヤツピング手段、クリーニング手段、加圧或は
吸引手段、電気熱変換体或はこれとは別の加熱素子或は
これらの組合わせによる予備加熱手段、記録とは別の吐
出を行なう予備吐出モードを行なうことも安定した記録
を行なうために有効である。Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a configuration of the recording apparatus, to the present invention in order to stabilize recording. Specifically, these include capping means for the recording head, cleaning means, pressure or suction means, preheating means using an electrothermal transducer or a separate heating element, or a combination thereof. It is also effective to perform a preliminary ejection mode in which ejection is performed separately from printing in order to perform stable printing.
【００３６】また、搭載される記録ヘツドの種類ないし
個数についても、例えば単色のインクに対応して１個の
みが設けられたものの他、記録色や濃度を事にする複数
のインクに対応して複数個数設けられるものであっても
よい。Furthermore, regarding the type and number of recording heads mounted, for example, in addition to one type that corresponds to a single color ink, there are also types and number of recording heads installed to correspond to a plurality of inks of various recording colors and densities. A plurality of them may be provided.
【００３７】さらに加えて、画像記録装置の形態として
は、コンピユータ等の情報処理機器の画像出力端末とし
て用いられるものの他、リーダ等と組合せた複写装置、
さらには送受信機能を有するフアクシミリ装置の形態を
採るものであってもよい。In addition, the image recording device may be used as an image output terminal for information processing equipment such as a computer, or a copying device combined with a reader or the like.
Furthermore, it may take the form of a facsimile device having transmitting and receiving functions.
【００３８】[0038]
【発明の効果】以上の様に本発明によれば、記録手段の
上流側及び下流側の搬送手段のうちのいずれか一方によ
る記録材の搬送量を検出し、その出力に応じて記録材の
伸び量を一定に制御するので、記録材にシワやたるみを
生じることなく記録材を搬送することができ、詰まり等
の搬送不良の発生を防止するとともに、高品位の画像記
録を行うことが可能になる。As described above, according to the present invention, the amount of recording material conveyed by either one of the upstream and downstream conveying means of the recording means is detected, and the conveyance amount of the recording material is adjusted according to the output. Since the amount of elongation is controlled at a constant level, it is possible to transport the recording material without wrinkles or sagging, which prevents clogging and other transport defects and enables high-quality image recording. become.
【図１】本発明の一実施例であるインクジエツト記録装
置の斜視図である。FIG. 1 is a perspective view of an inkjet recording apparatus that is an embodiment of the present invention.
【図２】インクジエツト記録装置の制御部を示すブロツ
ク図である。FIG. 2 is a block diagram showing a control section of the inkjet recording apparatus.
【図３】インクジエツト記録装置における制御動作を示
すフローチヤートである。FIG. 3 is a flowchart showing control operations in an inkjet recording apparatus.
【図４】インクジエツト記録装置の制御部の別の実施例
を示すブロツク図である。FIG. 4 is a block diagram showing another embodiment of the control section of the inkjet recording apparatus.
【図５】インクジエツト記録装置における制御動作の別
の実施例を示すフローチヤートである。FIG. 5 is a flowchart showing another embodiment of the control operation in the inkjet recording apparatus.
１ 記録材ロール
２ 上流側搬送ローラ
３ 下流側搬送ローラ
４ーＢｋ、４ーＣ、４ーＭ、４ーＹ 記録ヘツド１０
、１１ 駆動モータ
１２、１４ 回転速度検出装置
１３、１５ 演算装置
１６ 中央演算装置1 Recording material roll 2 Upstream conveyance roller 3 Downstream conveyance roller 4-Bk, 4-C, 4-M, 4-Y Recording head 10
, 11 Drive motors 12, 14 Rotational speed detection devices 13, 15 Arithmetic device 16 Central processing device
Claims (7)
を記録する画像記録装置において、記録位置の上流側に
設けられた第１の記録材搬送手段、前記記録位置の下流
側に設けられた第２の記録材搬送手段、前記第１の記録
材搬送手段及び前記第２の記録材搬送手段のうちの少な
くとも一方による記録材の搬送量を検出する検出手段、
前記検出手段の検出出力に応じて記録材の伸び量を一定
に制御する制御手段、を有することを特徴とする画像記
録装置。1. An image recording apparatus that records an image on a recording material in accordance with an image signal, comprising: a first recording material conveying means provided upstream of a recording position; a first recording material conveying means provided downstream of the recording position; a detection means for detecting the amount of recording material conveyed by at least one of the second recording material conveying means, the first recording material conveying means, and the second recording material conveying means;
An image recording apparatus comprising: a control means for controlling an amount of elongation of the recording material to be constant according to a detection output of the detection means.
量を検出する前記一方の記録材搬送手段とは異なる他方
の記録材搬送手段による記録材の搬送量を前記検出出力
に応じて制御することにより、記録材の伸び量を一定に
制御することを特徴とする請求項１に記載の画像記録装
置。2. The control means controls the conveyance amount of the recording material by the other recording material conveyance means, which is different from the one recording material conveyance means whose conveyance amount is detected by the detection means, in accordance with the detection output. 2. The image recording apparatus according to claim 1, wherein the amount of elongation of the recording material is controlled to be constant.
手段の搬送速度を検出する速度検出部を備え、前記制御
手段は更に前記速度検出部から出力される速度データに
応じて前記一方の記録材搬送手段の搬送速度を一定に制
御することを特徴とする請求項１又は請求項２に記載の
画像記録装置。3. The detection means includes a speed detection section that detects the conveyance speed of the one recording material conveyance means, and the control means further includes a speed detection section that detects the conveyance speed of the one recording material conveyance means, and the control means further controls the speed of the one recording medium according to the speed data output from the speed detection section. 3. The image recording apparatus according to claim 1, wherein the conveying speed of the material conveying means is controlled to be constant.
送手段による記録材の搬送量を検出する第１検出部と前
記第２の記録材搬送手段による記録材の搬送量を検出す
る第２検出部とを備え、前記制御手段は前記第１検出部
により検出される搬送量と前記第２検出部により検出さ
れる搬送量の差分が所定量となる様、前記第２の記録材
搬送手段を駆動制御することを特徴とする請求項１に記
載の画像記録装置。4. The detecting means includes a first detecting section that detects the amount of recording material conveyed by the first recording material conveying means and a first detecting section that detects the amount of recording material conveyed by the second recording material conveying means. the second detection section, and the control means controls the second recording material transport so that the difference between the transport amount detected by the first detection section and the transport amount detected by the second detection section is a predetermined amount. The image recording apparatus according to claim 1, characterized in that the means is drive-controlled.
送手段の搬送速度を検出する速度検出部を備え、前記制
御手段は更に前記速度検出部から出力される速度データ
に応じて前記第２の記録材搬送手段の搬送速度を一定に
制御することを特徴とする請求項４に記載の画像記録装
置。5. The second detecting section includes a speed detecting section that detects the conveyance speed of the second recording material conveying means, and the control means further includes a speed detecting section that detects the conveyance speed of the second recording material conveying means, and the control means further detects the conveyance speed of the second recording material conveying means in accordance with the speed data output from the speed detecting section. 5. The image recording apparatus according to claim 4, wherein the conveying speed of the second recording material conveying means is controlled to be constant.
素子を駆動することによりインク滴を吐出口から吐出さ
せて記録材上に画像を記録することを特徴とする請求項
１乃至５に記載の画像記録装置。6. The image according to claim 1, wherein the image is recorded on the recording material by ejecting ink droplets from the ejection port by driving an ejection energy generating element in accordance with an image signal. Recording device.
ルギーを発生するものであって、前記熱エネルギーによ
る気泡の発生に伴う状態変化に応じてインク滴を前記吐
出口から吐出させることを特徴とする請求項６に記載の
画像記録装置。7. The ejection energy generating element generates thermal energy, and ejects ink droplets from the ejection opening in response to a change in state due to the generation of bubbles due to the thermal energy. The image recording device according to item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019937A JP2801419B2 (en) | 1991-02-13 | 1991-02-13 | Image recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019937A JP2801419B2 (en) | 1991-02-13 | 1991-02-13 | Image recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04259580A true JPH04259580A (en) | 1992-09-16 |
| JP2801419B2 JP2801419B2 (en) | 1998-09-21 |
Family
ID=12013124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3019937A Expired - Fee Related JP2801419B2 (en) | 1991-02-13 | 1991-02-13 | Image recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2801419B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013184749A (en) * | 2012-03-05 | 2013-09-19 | Hitachi Industrial Equipment Systems Co Ltd | System and device of driving/controlling thin film sheet, and sheet winding device using the same |
| JP2014054771A (en) * | 2012-09-12 | 2014-03-27 | Seiko I Infotech Inc | Image forming apparatus |
| JP2014159131A (en) * | 2013-02-20 | 2014-09-04 | Roland Dg Corp | Printing method and printing device for fabrics |
-
1991
- 1991-02-13 JP JP3019937A patent/JP2801419B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013184749A (en) * | 2012-03-05 | 2013-09-19 | Hitachi Industrial Equipment Systems Co Ltd | System and device of driving/controlling thin film sheet, and sheet winding device using the same |
| JP2014054771A (en) * | 2012-09-12 | 2014-03-27 | Seiko I Infotech Inc | Image forming apparatus |
| JP2014159131A (en) * | 2013-02-20 | 2014-09-04 | Roland Dg Corp | Printing method and printing device for fabrics |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2801419B2 (en) | 1998-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |