JPH08267857A - Ink-jet recording apparatus - Google Patents

Ink-jet recording apparatus

Info

Publication number
JPH08267857A
JPH08267857A JP7543895A JP7543895A JPH08267857A JP H08267857 A JPH08267857 A JP H08267857A JP 7543895 A JP7543895 A JP 7543895A JP 7543895 A JP7543895 A JP 7543895A JP H08267857 A JPH08267857 A JP H08267857A
Authority
JP
Japan
Prior art keywords
recording
guide plate
recording paper
lower guide
paper
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
JP7543895A
Other languages
Japanese (ja)
Inventor
Masao Yamada
昌雄 山田
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems 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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP7543895A priority Critical patent/JPH08267857A/en
Publication of JPH08267857A publication Critical patent/JPH08267857A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ink Jet (AREA)
  • Handling Of Cut Paper (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

PURPOSE: To transfer recording papers without causing jamming thereby to record images with high quality even when the recording papers are slack and wrinkle or have different thicknesses. CONSTITUTION: An upper guide plate 20 is set, at a fixed position for regulating the position of an upper face of a recording paper 1 in the upstream vicinity of a recording position by a recording head 8. A lower guide plate 22 is arranged below the recording position A to move up and down. When the recording paper is transferred, the lower guide plate 22 is descended to widen a distance from the upper guide plate 20, thereby to prevent the paper from jamming. At the recording time, the lower guide plate 22 is moved up to press the recording paper 1 to the upper guide plate 20. The recording paper is held in a flat state at a fixed distance from the recording head 8. Images can accordingly be recorded with high quality.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、記録紙に対してインク
ジェット方式で画像記録を行うインクジェット記録装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus for recording an image on a recording paper by an ink jet method.

【0002】[0002]

【従来の技術】従来この種の装置は、図4に示すよう
に、記録紙1を記録位置Aを通って水平に送るための記
録紙搬送ローラ2及びピンチローラ3、4と、記録紙搬
送ローラ2の周囲に配置された給紙ガイド5と、記録位
置Aを通り且つ排出される記録紙1を支持し、案内する
下部ガイド板6と、記録紙搬送ローラ2から送り出され
る記録紙1を下部ガイド板6上に乗せるように案内する
上部ガイド板7と、記録位置Aにある記録紙1の上方に
配置され、記録紙1に対してインクジェット方式によっ
て画像記録を行う記録ヘッド8と、その記録ヘッド8を
保持して記録紙1の幅方向に往復動するキャリッジ9
と、そのキャリッジ9を移動可能に保持したキャリッジ
ガイド軸10a、10bと、キャリッジ9を往復動させ
るためのヘッド搬送モータ11、プーリ12、キャリッ
ジ駆動ベルト13等と、記録位置Aの下流に、記録紙の
幅方向に間隔を開けて配置された複数の排出ローラ14
と、この複数の排出ローラ14に対応して配置され、記
録紙1を対応する排出ローラ14に押し付ける複数のピ
ンチローラ15等を備えており、記録紙搬送ローラ2が
記録紙1を記録位置Aに間欠的に一定量ずつ(記録ヘッ
ド8による記録幅に相当した量ずつ)送り、その記録紙
1の停止中に記録ヘッド8が記録紙の幅方向に移動しな
がらインク16を吐出し画像記録を行っていた。
2. Description of the Related Art Conventionally, as shown in FIG. 4, an apparatus of this type has a recording paper feed roller 2 and pinch rollers 3 and 4 for feeding the recording paper 1 horizontally through a recording position A, and a recording paper feed roller. The paper feed guide 5 arranged around the roller 2, the lower guide plate 6 that supports and guides the recording paper 1 that passes through the recording position A and is discharged, and the recording paper 1 that is sent out from the recording paper conveying roller 2. An upper guide plate 7 that guides the lower guide plate 6 so that it is placed on the lower guide plate 6, and a recording head 8 that is arranged above the recording paper 1 at the recording position A and performs image recording on the recording paper 1 by an inkjet method. A carriage 9 which holds the recording head 8 and reciprocates in the width direction of the recording paper 1.
A carriage guide shafts 10a and 10b that movably hold the carriage 9; a head transport motor 11 for reciprocating the carriage 9; a pulley 12; a carriage drive belt 13; A plurality of discharge rollers 14 arranged at intervals in the width direction of the paper
And a plurality of pinch rollers 15 and the like which are arranged corresponding to the plurality of discharge rollers 14 and press the recording sheet 1 against the corresponding discharge rollers 14, and the recording sheet conveying roller 2 records the recording sheet 1 at the recording position A. Is intermittently fed by a fixed amount (by an amount corresponding to the recording width of the recording head 8), and while the recording paper 1 is stopped, the recording head 8 moves in the width direction of the recording paper and ejects the ink 16 to record an image. Was going on.

【0003】ここで、高品質の画像記録を行うには、記
録紙1と記録ヘッド8との間隔を極力小さく且つ一定に
保つことが必要であり、このため、従来は下部ガイド板
6と上部ガイド板7の間隔をなるべく小さく取り、記録
紙1を下部ガイド板6に沿って搬送することにより記録
ヘッド8と記録紙表面との距離をなるべく一定に保つよ
うに調整していた。
Here, in order to perform high-quality image recording, it is necessary to keep the distance between the recording paper 1 and the recording head 8 as small and constant as possible. For this reason, conventionally, the lower guide plate 6 and the upper portion are kept. The space between the guide plates 7 is set as small as possible, and the recording paper 1 is conveyed along the lower guide plate 6 so that the distance between the recording head 8 and the surface of the recording paper is adjusted to be as constant as possible.

【0004】[0004]

【発明が解決しようとする課題】しかし、かかる従来の
構成では、上部ガイド板と下部ガイド板との間隔を小さ
くしても、記録紙の厚さの違いや、たるみ、しわ等によ
り上方へ膨らみやすいこともあり、記録ヘッドと記録紙
表面の距離を一定に保つことが難しく、画質向上が困難
であった。また、記録紙が上方に膨らんでも記録ヘッド
に接触しないようにするため、記録ヘッドとの距離を多
めに取らざるを得ず、例えば、1.5mm程度以上とせ
ざるを得ず、この点も画質の悪化の要因となっていた。
更に、上部ガイド板と下部ガイド板との間隔を小さくす
ると、給紙、搬送時に記録紙の詰まりが発生しやすい弊
害もあった。
However, in such a conventional structure, even if the distance between the upper guide plate and the lower guide plate is made small, the recording paper bulges upward due to the difference in the thickness of the recording paper, slack, wrinkles and the like. In some cases, it was difficult to keep the distance between the recording head and the surface of the recording paper constant, and it was difficult to improve the image quality. Further, in order to prevent the recording paper from contacting the recording head even if the recording paper swells upward, the distance from the recording head must be increased, for example, about 1.5 mm or more. Had become a factor of deterioration.
Further, if the distance between the upper guide plate and the lower guide plate is made small, there is a problem that the recording paper is likely to be jammed at the time of feeding and carrying.

【0005】また、図5に示すように、排出ローラ14
で排出する際に記録紙1の先端が下方に垂れ下がらない
ようにするため、記録紙1の幅方向に間隔を開けて配置
している複数の排出ローラ14及びピンチローラ15の
間に、記録紙1を下方に押す押えローラ17を設け、記
録紙1を波状に湾曲させる構成としたものも知られてい
る。ところがこの構成とすると、記録紙1に形成される
波状の湾曲が記録位置Aにも及び、一層画質を低下させ
るという問題となっていた。
Further, as shown in FIG.
In order to prevent the leading edge of the recording paper 1 from hanging downward when the recording paper 1 is discharged, the recording paper 1 is recorded between a plurality of discharge rollers 14 and pinch rollers 15 which are arranged at intervals in the width direction. It is also known that a pressing roller 17 for pushing the paper 1 downward is provided and the recording paper 1 is curved in a wave shape. However, with this configuration, the wavy curve formed on the recording paper 1 reaches the recording position A, which further deteriorates the image quality.

【0006】本発明は、上述の問題点に鑑みて為された
もので、記録ヘッドと記録紙との間隔を一定に保って高
品質の記録を可能とすると共に、給紙、搬送時における
記録紙の詰まりを防止したインクジェット記録装置を提
供することを目的とする。
The present invention has been made in view of the above-mentioned problems, and enables high-quality recording while keeping the distance between the recording head and the recording paper constant, and recording at the time of feeding and conveying. An object of the present invention is to provide an inkjet recording device that prevents paper jams.

【0007】[0007]

【課題を解決するための手段】本発明は上記問題点を解
決するため、記録位置の記録紙の下側に設ける下部ガイ
ド板を上下に移動可能とし、駆動機構によってその下部
ガイド板を、上部ガイド板から下方に離れた記録紙案内
位置と、記録紙を前記上部ガイド板に押し付ける記録紙
固定位置とに往復動させる構成としたものである。
In order to solve the above problems, the present invention makes it possible to vertically move a lower guide plate provided below the recording paper at the recording position, and to drive the lower guide plate to the upper part by a drive mechanism. The configuration is such that the recording sheet is guided downwardly from the guide plate and the recording sheet is fixed to press the recording sheet against the upper guide plate.

【0008】ここで、下部ガイド板の移動方向として
は、単に直線状に往復動する構成としてもよいが、記録
紙の搬送方向の下流側を支点として揺動するように構成
することが好ましい。
Here, the lower guide plate may be configured to simply reciprocate linearly, but it is preferable to swing the lower guide plate with the downstream side of the recording paper conveyance direction as a fulcrum.

【0009】さらに,上部ガイド板を下部ガイド板の移
動を規制することにより,下部ガイド板を記録紙固定位
置に停止させるようにしたものである。
Further, the lower guide plate is stopped at the recording paper fixing position by restricting the movement of the upper guide plate and the lower guide plate.

【0010】[0010]

【作用】本発明は上述の構成により、記録紙を搬送する
時には駆動機構が下部ガイド板を下方の記録紙案内位置
に移動させ、上部ガイド板との間に大きい間隔を生じさ
せ、これによって記録紙の供給、移動を円滑にして詰ま
りの問題を回避できる。一方、記録時には、駆動機構が
下部ガイド板を上方に押し上げて記録紙を上部ガイド板
に押し付けて固定し、これによって記録紙の厚みの違い
やたるみ、しわの影響を無くし、記録ヘッドから記録紙
までの距離を一定とでき、画質を向上できる。
According to the present invention, when the recording paper is conveyed, the driving mechanism moves the lower guide plate to the lower recording paper guide position to form a large gap between the lower guide plate and the upper guide plate. The paper supply and movement can be smoothed to avoid the problem of jams. On the other hand, at the time of recording, the drive mechanism pushes the lower guide plate upwards and presses the recording paper against the upper guide plate to fix it, thereby eliminating the effects of the difference in the thickness of the recording paper, slack, and wrinkles. The distance to can be made constant and the image quality can be improved.

【0011】ここで、下部ガイド板の移動機構として記
録紙の搬送方向の下流側を支点として揺動する構成とす
ると、下部ガイド板の動きが安定して動作の信頼性が増
し、しかも下部ガイド板の下流側の移動量を小さくで
き、このため、その下流に配置されている排出ローラ及
びピンチローラに対する記録紙先端の案内が確実で、こ
の点からも一層紙詰まりを防止できるという効果が得ら
れる。
If the lower guide plate moving mechanism is constructed so as to swing about the downstream side in the direction of conveyance of the recording paper as a fulcrum, the lower guide plate moves stably and the reliability of the operation increases, and the lower guide plate moves. The amount of movement of the plate on the downstream side can be made small, so that the leading edge of the recording paper can be reliably guided to the discharge roller and the pinch roller arranged downstream thereof, and from this point, it is possible to further prevent the paper jam. To be

【0012】[0012]

【実施例】図1(a)、(b)は本発明の一実施例によ
るインクジェット記録装置の要部を、それぞれ異なる作
動状態で示す概略断面図、図2はそのインクジェット記
録装置の要部の概略斜視図であり、図4、図5に示す従
来例と同一又は同様な部品には同一符号を付けて示して
いる。図1、図2において、1は記録紙、2は記録紙1
を記録位置Aを通って水平に送るための記録紙搬送ロー
ラ、3、4は記録紙1を記録紙搬送ローラ2に押し付け
るピンチローラ、5は記録紙1を記録紙搬送ローラ2に
沿って案内する給紙ガイド、8は記録位置Aにある記録
紙1の上方に配置され、記録紙1に対してインクジェッ
ト方式によって画像記録を行う記録ヘッド、9はその記
録ヘッド8を保持して記録紙1の幅方向に往復動するキ
ャリッジ、10はそのキャリッジ9を移動可能に保持し
たキャリッジガイド軸、11はキャリッジ9を往復動さ
せるためのヘッド搬送モータ、12はキャリッジ9の走
行領域の外側に配置され且つヘッド搬送モータ11で駆
動されるベルト駆動プーリ、13はこのべルト駆動プー
リ12とそれに対向配置されたプーリ(図示せず)とに
掛けられ且つキャリッジ9に連結されたキャリッジ駆動
ベルト、14は排出ローラ、15は記録紙1を排出ロー
ラ14に押し付けるピンチローラ、16は記録ヘッド8
から記録紙1へ吐出されるインク、17はピンチローラ
15の間に配置され、記録紙1を下方に押圧して波形に
湾曲させるための押えローラである。
1 (a) and 1 (b) are schematic cross-sectional views showing main parts of an ink jet recording apparatus according to an embodiment of the present invention in different operating states, and FIG. 2 shows main parts of the ink jet recording apparatus. It is a schematic perspective view, and the same or similar parts as those of the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals. In FIGS. 1 and 2, 1 is a recording sheet, 2 is a recording sheet 1
To convey the recording paper 1 horizontally through the recording position A. Pinch rollers for pressing the recording paper 1 against the recording paper conveyance roller 2 and 5 for guiding the recording paper 1 along the recording paper conveyance roller 2. A paper feed guide 8 is disposed above the recording paper 1 at the recording position A, and a recording head 9 which records an image on the recording paper 1 by an ink jet method, and 9 holds the recording head 8 and holds the recording paper 1 A carriage that reciprocates in the width direction of the carriage 10, a carriage guide shaft that movably holds the carriage 9, a head transport motor 11 that reciprocates the carriage 9, and a reference numeral 12 that is disposed outside the traveling area of the carriage 9. A belt driving pulley 13 driven by the head conveying motor 11 is hung between the belt driving pulley 12 and a pulley (not shown) arranged opposite to the belt driving pulley 12 and Tsu di 9 linked carriage driving belt, the discharge roller 14, a pinch roller 15 for pressing the recording sheet 1 to the discharge roller 14, the 16 recording heads 8
The ink 17 ejected from the recording paper 1 to the recording paper 1 is a pressing roller that is disposed between the pinch rollers 15 and presses the recording paper 1 downward to bend it into a waveform.

【0013】20は、記録位置Aに送られる記録紙1の
上面位置を規制するように定位置に配置された上部ガイ
ド板である。この上部ガイド板13は、その下面に平坦
面20aを備えており、その平坦面20aがほぼ水平と
なるように配置されている。更に、上部ガイド板20の
先端は、厚みを薄くし、記録位置Aに極力接近するよう
に配置されている。なお、図面では、上部ガイド板20
を給紙ガイド5と一体構造として示しているが、この代
わりに別部材として作り、給紙ガイド5に取り付ける構
成としてもよい。
Reference numeral 20 is an upper guide plate which is arranged at a fixed position so as to regulate the upper surface position of the recording paper 1 fed to the recording position A. The upper guide plate 13 has a flat surface 20a on its lower surface and is arranged so that the flat surface 20a is substantially horizontal. Further, the tip of the upper guide plate 20 has a reduced thickness and is arranged so as to approach the recording position A as much as possible. In the drawings, the upper guide plate 20
Is shown as an integral structure with the paper feed guide 5, but instead of this, it may be made as a separate member and attached to the paper feed guide 5.

【0014】22は、記録位置Aを通る記録紙1の下面
を案内するように配置された下部ガイド板である。この
下部ガイド板22は従来と異なり上下に移動可能に設け
られている。すなわち、下部ガイド板22は下部ガイド
支持アーム23に保持されており、その下部ガイド支持
アーム23は、記録位置Aよりも記録紙の搬送方向の下
流側に位置する支点24を中心として揺動するように設
けられている。25は下部ガイド板22を押し上げるよ
う配置されたばね、26は下部ガイド支持アーム23を
下方に揺動させるために設けられたカムであり、駆動モ
ータ(図示せず)で回転駆動されるようになっている。
ここで、カム26が図1(b)に示す位置に回転する
と、ばね25が下部ガイド板22を押し上げ、下部ガイ
ド板22を、記録紙1を上部ガイド板20に押し付ける
記録紙固定位置に移動させる。また、カム26が図1
(a)に示す位置に回転すると、下部ガイド支持アーム
23を下方に揺動させ、下部ガイド板22を、上部ガイ
ド板20から下方に離れた記録紙案内位置に移動させ
る。従って、ばね25、カム26等は、下部ガイド板を
記録紙案内位置と記録紙固定位置とに往復動させる駆動
機構を構成する。
A lower guide plate 22 is arranged so as to guide the lower surface of the recording paper 1 passing through the recording position A. This lower guide plate 22 is provided so as to be movable up and down, unlike the conventional case. That is, the lower guide plate 22 is held by the lower guide support arm 23, and the lower guide support arm 23 swings around a fulcrum 24 located downstream of the recording position A in the recording paper conveyance direction. Is provided. Reference numeral 25 is a spring arranged to push up the lower guide plate 22, and 26 is a cam provided for swinging the lower guide support arm 23 downward, which is rotationally driven by a drive motor (not shown). ing.
Here, when the cam 26 rotates to the position shown in FIG. 1B, the spring 25 pushes up the lower guide plate 22 and moves the lower guide plate 22 to the recording paper fixing position where the recording paper 1 is pressed against the upper guide plate 20. Let In addition, the cam 26 is shown in FIG.
When it is rotated to the position shown in (a), the lower guide support arm 23 is swung downward, and the lower guide plate 22 is moved to the recording paper guiding position which is separated downward from the upper guide plate 20. Therefore, the spring 25, the cam 26, etc. constitute a drive mechanism for reciprocating the lower guide plate between the recording paper guide position and the recording paper fixing position.

【0015】下部ガイド板22は、図1(b)に示すよ
うに、上部ガイド板20に押し付けられた時、その上面
に保持した記録紙1が記録ヘッド8に平行に向かい合
い、良好な画像記録が行われるように取付角度が定めら
れている。また、この状態での記録ヘッド8と下部ガイ
ド板22の上面との間隔は、極力小さくなるように、例
えば、0.7〜1.0mm程度に定められている。下部
ガイド板22の上面は、図2から良く分かるように、上
部ガイド板20に押し付けられる部分は平坦面22aと
なっており、その下流には記録紙の搬送方向に延びる複
数のリブ22bが形成されている。
As shown in FIG. 1B, when the lower guide plate 22 is pressed against the upper guide plate 20, the recording paper 1 held on the upper surface of the lower guide plate 22 faces the recording head 8 in parallel, so that good image recording is achieved. The mounting angle is determined so that The distance between the recording head 8 and the upper surface of the lower guide plate 22 in this state is set to, for example, about 0.7 to 1.0 mm so as to be as small as possible. As is clear from FIG. 2, the upper surface of the lower guide plate 22 is a flat surface 22a that is pressed against the upper guide plate 20, and a plurality of ribs 22b that extend in the recording paper conveyance direction are formed downstream thereof. Has been done.

【0016】以上の構成になるインクジェット記録装置
について、以下その動作を説明する。カム26が図1
(a)に示す位置に回転し、下部ガイド支持アーム23
を下方に揺動させると、下部ガイド板22が記録紙案内
位置に降下し、上部ガイド板20との間に大きい間隔が
形成される。この状態で記録紙搬送ローラ2が回転して
記録紙1を搬送する。この際、下部ガイド板22と上部
ガイド板20との間に大きい間隔が形成されているの
で、記録紙1の詰まりが生じることがなく、記録紙は安
定して搬送される。また、下部ガイド板22はそれより
も下流側の支点24を中心として下方に揺動するため、
下部ガイド板22の下流側の端部はあまり移動せず、こ
のため下部ガイド板22で案内される記録紙1の先端は
安定して下流の排出ローラ14及びピンチローラ15の
間に送り込まれる。記録紙搬送ローラ2は記録紙1を所
定量送って、記録紙の記録すべき新たな領域が記録ヘッ
ド8による記録位置Aに位置した時に停止する。
The operation of the ink jet recording apparatus having the above structure will be described below. The cam 26 is shown in FIG.
The lower guide support arm 23 is rotated to the position shown in FIG.
Is swung downward, the lower guide plate 22 descends to the recording paper guide position, and a large space is formed between the lower guide plate 22 and the upper guide plate 20. In this state, the recording paper conveyance roller 2 rotates to convey the recording paper 1. At this time, since the large gap is formed between the lower guide plate 22 and the upper guide plate 20, the recording paper 1 is not jammed and the recording paper is stably conveyed. Further, since the lower guide plate 22 swings downward around the fulcrum 24 on the downstream side,
The downstream end of the lower guide plate 22 does not move much, so that the leading end of the recording paper 1 guided by the lower guide plate 22 is stably fed between the downstream discharge roller 14 and the pinch roller 15. The recording paper conveying roller 2 feeds the recording paper 1 by a predetermined amount and stops when a new area of the recording paper to be recorded is located at the recording position A by the recording head 8.

【0017】次に、カム26が図1(b)に示す位置に
回転し、ばね25が下部ガイド板22を押し上げ、記録
紙1を上部ガイド板20に押し付けて固定する記録紙固
定位置に移動させる。この状態で、記録ヘッド8が記録
紙1の幅方向に走行しながらインク16を吐出し画像記
録を行う。ここで、画像記録を行う時、記録紙1は、記
録位置Aの近傍位置を上部ガイド板20下面の平坦面2
0aと下部ガイド板22上面の平坦面22aとではさみ
付けられて平坦に保持されているので、記録紙1の記録
位置Aにある部分も、たるみやしわの影響をなくして平
坦に保持され、且つその上面位置は上部ガイド板20の
平坦面20aで規制されるので、記録紙の厚みの違いが
あっても常に記録ヘッド8から一定の距離に保持されて
おり、高品質での画像記録が行われる。
Next, the cam 26 rotates to the position shown in FIG. 1 (b), and the spring 25 pushes up the lower guide plate 22 to move the recording paper 1 to the recording paper fixing position where the recording paper 1 is pressed and fixed to the upper guide plate 20. Let In this state, the recording head 8 travels in the width direction of the recording paper 1 to eject the ink 16 to perform image recording. Here, when performing image recording, the recording paper 1 is placed at a position near the recording position A at the flat surface 2 on the lower surface of the upper guide plate 20.
0a and the flat surface 22a on the upper surface of the lower guide plate 22 are sandwiched and held flat, so that the portion of the recording paper 1 at the recording position A is also held flat without the influence of slack and wrinkles. Moreover, since the upper surface position thereof is regulated by the flat surface 20a of the upper guide plate 20, even if there is a difference in the thickness of the recording paper, it is always held at a constant distance from the recording head 8 and high-quality image recording is possible. Done.

【0018】記録ヘッド8が記録紙1の幅方向に移動し
て画像記録を行うと、再びカム26が回転して下部ガイ
ド板22を下方に押し下げ、その状態で記録紙搬送ロー
ラ2が記録紙1を所定量送り、次いで再びカム26が回
転し、ばね25が下部ガイド板22を押し上げて記録紙
1を上部ガイド板20に押し付け固定し、記録ヘッド8
が走行して画像記録を行う。以下同様の動作を繰り返す
ことにより、記録紙1の全長に対する画像記録が行わ
れ、記録済の記録紙1は排出ローラ14、ピンチローラ
15により排出される。なお、排出される記録紙1が、
排出ローラ14とピンチローラ15で拘束される位置の
中間位置を押えローラ17で押し下げられることによ
り、搬送方向に直角に波形に湾曲させられており、これ
により先端が垂れ下がることなく良好に排出される。ま
た、この時、その湾曲が記録位置Aにも及ぶこととなる
が、記録時には、記録紙1を下部ガイド板22が上部ガ
イド板20の平坦面に押し付けて固定することにより、
記録位置Aにある記録紙部分は平坦に保持され、従って
画質を低下させることはない。
When the recording head 8 moves in the width direction of the recording paper 1 to record an image, the cam 26 rotates again to push the lower guide plate 22 downward, and in this state, the recording paper conveying roller 2 moves the recording paper. 1, the cam 26 is rotated again, the spring 25 pushes up the lower guide plate 22 to press the recording paper 1 against the upper guide plate 20, and fix the recording paper 1.
Runs and records an image. By repeating the same operation thereafter, image recording is performed on the entire length of the recording paper 1, and the recorded recording paper 1 is discharged by the discharge roller 14 and the pinch roller 15. The discharged recording paper 1 is
Since the intermediate position between the positions constrained by the discharge roller 14 and the pinch roller 15 is pushed down by the pressing roller 17, it is curved in a wave shape at right angles to the transport direction, whereby the tip is satisfactorily discharged without sagging. . At this time, the curve extends to the recording position A, but at the time of recording, the recording paper 1 is fixed by pressing the lower guide plate 22 against the flat surface of the upper guide plate 20.
The recording paper portion at the recording position A is held flat, so that the image quality is not deteriorated.

【0019】なお、上記実施例では、下部ガイド板22
の上面を、上部ガイド板20に押し付けられる平坦面2
2aとその下流の複数のリブ22bを備えた形状として
いるが、リブ22bを省略し、上面全体を平坦面として
もよい。ただし、実施例のようにリブ22bを形成して
おくと、その上を記録紙1が走行する際の摩擦抵抗が小
さくなるので、紙詰まりが生じにくいという利点が得ら
れる。また、平坦面22aを無くし、この部分にもリブ
22bを延長した形状としてもよい。この形状とする
と、記録紙1を上部ガイド板20に押し付けて平坦に保
持する効果が若干低下するが、記録紙を送る際の摩擦抵
抗が一層小さくなり、紙詰まりを一層防止できる利点が
得られる。更に、上記実施例では、ピンチローラ15の
間に押えローラ17を設けているが、これは必要に応じ
省略してもよい。
In the above embodiment, the lower guide plate 22
The upper surface of the flat surface 2 pressed against the upper guide plate 20
2a and a plurality of ribs 22b downstream thereof are provided, but the rib 22b may be omitted and the entire upper surface may be a flat surface. However, when the rib 22b is formed as in the embodiment, the frictional resistance when the recording paper 1 travels on the rib 22b is reduced, so that there is an advantage that the paper jam does not easily occur. Further, the flat surface 22a may be eliminated, and the rib 22b may be extended to this portion as well. With this shape, the effect of pressing the recording paper 1 against the upper guide plate 20 and holding it flatly decreases, but the frictional resistance when feeding the recording paper is further reduced, and there is an advantage that the paper jam can be further prevented. . Further, in the above embodiment, the pressing roller 17 is provided between the pinch rollers 15, but this may be omitted if necessary.

【0020】上記実施例では下部ガイド板22を上下動
させるための機構として、記録紙1の下流側の支点24
を中心として揺動可能な下部ガイド板支持アーム23を
用いている。この構成は下部ガイド板22を簡単な機構
で安定して上下動させる利点を有しているが、本発明に
おいて下部ガイド板22を上下動させる機構はこの構成
に限らず、適宜変更可能である。図3はその機構の他の
例を示すものである。この実施例では、定位置に設けら
れている支持板31に対して上下動可能なガイドロッド
32の上端に下部ガイド板22を保持させ、且つその支
持板31と下部ガイド板22との間に、下部ガイド板2
2を押し上げるようばね33を配置し、更にガイドロッ
ド32の下端に水平に操作板34を取り付け、その操作
板34を押し下げることができるようにカム35を配置
したものである。この実施例では、図3(a)に示す位
置にカム35が回転し、操作板34を介して下部ガイド
板22を下方に移動させた状態で記録紙搬送ローラ2が
回転して記録紙1を搬送し、画像記録時には、カム35
が図3(b)に示す位置に回転し、下部ガイド板22が
ばね33で押し上げられて、記録紙1を上部ガイド板2
0に押し付けて固定し、この状態で記録ヘッド8による
画像記録が行われている。かくして、この実施例でも前
記した実施例と同様に、紙詰まりを生じることなく記録
紙の搬送が可能であり、且つ記録紙の厚みの違いやたる
み、しわの影響を無くし、記録紙を平坦に且つ記録ヘッ
ドから一定の距離に保持して画像記録を行うことがで
き、高品質での画像記録が可能である。
In the above embodiment, a fulcrum 24 on the downstream side of the recording paper 1 is used as a mechanism for moving the lower guide plate 22 up and down.
A lower guide plate support arm 23 that can swing around is used. This structure has an advantage of stably moving the lower guide plate 22 up and down with a simple mechanism, but the mechanism for moving the lower guide plate 22 up and down in the present invention is not limited to this structure, and can be appropriately changed. . FIG. 3 shows another example of the mechanism. In this embodiment, the lower guide plate 22 is held at the upper end of a guide rod 32 that can move up and down with respect to the support plate 31 provided at a fixed position, and between the support plate 31 and the lower guide plate 22. , Lower guide plate 2
A spring 33 is arranged so as to push up 2, and an operation plate 34 is horizontally attached to the lower end of the guide rod 32, and a cam 35 is arranged so that the operation plate 34 can be pushed down. In this embodiment, the cam 35 rotates to the position shown in FIG. 3A, and the recording paper conveying roller 2 rotates to rotate the recording paper 1 while the lower guide plate 22 is moved downward via the operation plate 34. When the image is recorded, the cam 35
Rotate to the position shown in FIG. 3B, the lower guide plate 22 is pushed up by the spring 33, and the recording paper 1 is moved to the upper guide plate 2
The recording head 8 is pressed and fixed to 0, and in this state, image recording is performed by the recording head 8. Thus, in this embodiment as well as in the above-described embodiment, the recording paper can be conveyed without causing paper jam, and the effects of the difference in the thickness of the recording paper, the slack and the wrinkle are eliminated, and the recording paper is flattened. In addition, it is possible to perform image recording while maintaining a fixed distance from the recording head, and it is possible to perform image recording with high quality.

【0021】[0021]

【発明の効果】以上の説明から明らかなように、本発明
は記録位置の記録紙の下側に設ける下部ガイド板を上下
に移動可能とし、駆動機構によってその下部ガイド板
を、上部ガイド板から下方に離れた記録紙案内位置と、
記録紙を前記上部ガイド板に押し付ける記録紙固定位置
とに往復動させる構成としたことにより、記録紙を搬送
する時には駆動機構が下部ガイド板を下方の記録紙案内
位置に移動させ、上部ガイド板との間に大きい間隔を生
じさせ、これによって記録紙の供給、移動を円滑にして
詰まりの問題を回避でき、しかも、記録時には、駆動機
構が下部ガイド板を上方に押し上げて記録紙を上部ガイ
ド板に押し付けて固定し、これによって記録紙の厚みの
違いやたるみ、しわの影響を無くし、記録ヘッドから記
録紙までの距離を一定とでき、画質を向上できるという
効果を有している。
As is apparent from the above description, according to the present invention, the lower guide plate provided below the recording paper at the recording position can be moved up and down, and the lower guide plate is moved from the upper guide plate by the drive mechanism. The recording paper guide position separated downward,
Since the recording paper is reciprocated to the recording paper fixing position where it is pressed against the upper guide plate, when the recording paper is conveyed, the drive mechanism moves the lower guide plate to the lower recording paper guide position and the upper guide plate. A large gap is created between the recording paper and the recording paper, which makes it possible to smoothly feed and move the recording paper and avoid the problem of jams. Moreover, at the time of recording, the drive mechanism pushes the lower guide plate upward to guide the recording paper to the upper guide. It is pressed against the plate and fixed, whereby the effect of difference in thickness of the recording paper, slack and wrinkle is eliminated, the distance from the recording head to the recording paper can be made constant, and the image quality can be improved.

【0022】ここで、下部ガイド板の移動機構として記
録紙の搬送方向の下流側を支点として揺動する構成とす
ると、下部ガイド板の動きが安定して動作の信頼性が増
し、しかも下部ガイド板の下流側の移動量を小さくで
き、このため、その下流に配置されている排出ローラ及
びピンチローラに対する記録紙先端の案内が確実で、こ
の点からも一層紙詰まりを防止できるという効果が得ら
れる。
If the lower guide plate moving mechanism is constructed so as to swing about the downstream side in the direction of conveyance of the recording paper as a fulcrum, the lower guide plate will move stably and the reliability of the operation will increase. The amount of movement of the plate on the downstream side can be made small, so that the leading edge of the recording paper can be reliably guided to the discharge roller and the pinch roller arranged downstream thereof, and from this point, it is possible to further prevent the paper jam. To be

【0023】また、本発明では上部ガイド板を下部ガイ
ド板の移動を規制することにより、下部ガイド板を記録
紙固定位置に停止させているために、下部ガイド板の移
動を規制するための特別なストッパ部材を備えることが
なく、部品点数を極力少なくして上記の効果を得ること
ができる。
Further, according to the present invention, since the lower guide plate is stopped at the recording paper fixing position by restricting the movement of the upper guide plate to the lower guide plate, the special guide for restricting the movement of the lower guide plate is used. It is possible to obtain the above effect by reducing the number of parts as much as possible without providing a special stopper member.

【図面の簡単な説明】[Brief description of drawings]

【図1】(a)は本発明の一実施例によるインクジェッ
ト記録装置の要部を、記録紙搬送時の状態で示す概略断
面図、(b)はそれを記録動作時の状態で示す概略断面
FIG. 1A is a schematic cross-sectional view showing a main part of an inkjet recording apparatus according to an embodiment of the present invention when a recording paper is conveyed, and FIG. 1B is a schematic cross-sectional view showing the same during a recording operation. Figure

【図2】図1に示すインクジェット記録装置の要部の概
略斜視図
FIG. 2 is a schematic perspective view of a main part of the inkjet recording apparatus shown in FIG.

【図3】(a)は本発明の他の実施例によるインクジェ
ット記録装置の要部を、記録紙搬送時の状態で示す概略
断面図、(b)はそれを記録動作時の状態で示す概略断
面図
3A is a schematic cross-sectional view showing a main part of an inkjet recording apparatus according to another embodiment of the present invention in a state in which a recording sheet is conveyed, and FIG. 3B is a schematic sectional view showing it in a state in a recording operation. Cross section

【図4】従来のインクジェット記録装置の要部を示す概
略断面図
FIG. 4 is a schematic cross-sectional view showing a main part of a conventional inkjet recording device.

【図5】図4とは異なる従来のインクジェット記録装置
の要部を示す概略断面図
FIG. 5 is a schematic cross-sectional view showing a main part of a conventional inkjet recording apparatus different from that in FIG.

【符号の説明】[Explanation of symbols]

1 記録紙 2 記録紙搬送ローラ 8 記録ヘッド 14 排出ローラ 15 ピンチローラ 16 インク 17 押えローラ 20 上部ガイド板 20a 平坦面 22 下部ガイド板 22a 平坦面 22b リブ 23 下部ガイド支持アーム 24 支点 25 ばね 26 カム 1 Recording Paper 2 Recording Paper Conveying Roller 8 Recording Head 14 Ejecting Roller 15 Pinch Roller 16 Ink 17 Holding Roller 20 Upper Guide Plate 20a Flat Surface 22 Lower Guide Plate 22a Flat Surface 22b Rib 23 Lower Guide Support Arm 24 Support Point 25 Spring 26 26 Cam

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 記録位置にある記録紙に対して上方から
画像記録を行うインクジェット式の記録ヘッドと、前記
記録位置に送られる記録紙の上面位置を規制するように
定位置に配置された上部ガイド板と、前記記録位置を通
る記録紙の下面を案内するように配置された下部ガイド
板と、この下部ガイド板を、前記上部ガイド板から下方
に離れた記録紙案内位置と、記録紙を前記上部ガイド板
に押し付ける記録紙固定位置とに往復動させる駆動機構
を有するインクジェット記録装置。
1. An ink jet recording head for recording an image from above on a recording sheet at a recording position, and an upper portion arranged at a fixed position so as to regulate the upper surface position of the recording sheet sent to the recording position. A guide plate, a lower guide plate arranged so as to guide the lower surface of the recording paper passing through the recording position, a lower guide plate, a recording paper guide position spaced downward from the upper guide plate, and a recording paper. An inkjet recording apparatus having a drive mechanism that reciprocates to a recording paper fixing position that is pressed against the upper guide plate.
【請求項2】 下部ガイド板が、記録紙の搬送方向の下
流側を支点として揺動するように設けられていることを
特徴とする請求項1記載のインクジェット記録装置。
2. The ink jet recording apparatus according to claim 1, wherein the lower guide plate is provided so as to swing about a downstream side of a recording paper conveyance direction as a fulcrum.
【請求項3】 記録位置にある記録紙に対して上方から
画像記録を行うインクジェット式の記録ヘッドと、前記
記録位置に送られる記録紙の上面位置を規制するように
定位置に配置された上部ガイド板と、前記記録位置を通
る記録紙の下面を案内するように配置された下部ガイド
板と、この下部ガイド板を、前記上部ガイド板から下方
に離れた記録紙案内位置と、記録紙を上部ガイド板に押
し付ける記録紙固定位置とに往復動させる駆動機構とを
備え、前記上部ガイド板が前記下部ガイド板の移動を規
制することにより前記下部ガイド板を記録紙固定位置に
停止させるようにしたことを特徴とするインクジェット
記録装置。
3. An ink jet type recording head for recording an image from above on a recording paper at a recording position, and an upper part arranged at a fixed position so as to regulate the upper surface position of the recording paper sent to the recording position. A guide plate, a lower guide plate arranged so as to guide the lower surface of the recording paper passing through the recording position, a lower guide plate, a recording paper guide position spaced downward from the upper guide plate, and a recording paper. And a drive mechanism for reciprocating the recording paper fixing position to be pressed against the upper guide plate, wherein the lower guide plate is stopped at the recording paper fixing position by restricting the movement of the lower guide plate. An inkjet recording device characterized by the above.
JP7543895A 1995-03-31 1995-03-31 Ink-jet recording apparatus Pending JPH08267857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7543895A JPH08267857A (en) 1995-03-31 1995-03-31 Ink-jet recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7543895A JPH08267857A (en) 1995-03-31 1995-03-31 Ink-jet recording apparatus

Publications (1)

Publication Number Publication Date
JPH08267857A true JPH08267857A (en) 1996-10-15

Family

ID=13576249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7543895A Pending JPH08267857A (en) 1995-03-31 1995-03-31 Ink-jet recording apparatus

Country Status (1)

Country Link
JP (1) JPH08267857A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008162807A (en) * 2008-03-12 2008-07-17 Ricoh Co Ltd Image forming device
US8641303B2 (en) 2010-01-29 2014-02-04 Brother Kogyo Kabushiki Kaisha Image recording apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008162807A (en) * 2008-03-12 2008-07-17 Ricoh Co Ltd Image forming device
US8641303B2 (en) 2010-01-29 2014-02-04 Brother Kogyo Kabushiki Kaisha Image recording apparatus
US8939661B2 (en) 2010-01-29 2015-01-27 Brother Kogyo Kabushiki Kaisha Image recording apparatus
US9102174B2 (en) 2010-01-29 2015-08-11 Brother Kogyo Kabushiki Kaisha Image recording apparatus

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