JPH07100384B2 - Color recording device - Google Patents
Color recording deviceInfo
- Publication number
- JPH07100384B2 JPH07100384B2 JP28601585A JP28601585A JPH07100384B2 JP H07100384 B2 JPH07100384 B2 JP H07100384B2 JP 28601585 A JP28601585 A JP 28601585A JP 28601585 A JP28601585 A JP 28601585A JP H07100384 B2 JPH07100384 B2 JP H07100384B2
- Authority
- JP
- Japan
- Prior art keywords
- pinch roller
- pressure contact
- image receiving
- receiving paper
- roller
- 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.)
- Expired - Lifetime
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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
- B41J13/036—Rollers co-operating with a roller platen
Description
【発明の詳細な説明】 産業上の利用分野 本発明はテレビ画像やキャプテンシステムなどの、フル
カラー画像のハードコピーに有用な、小型で容易に高品
位画像を得ることのできるカラー記録装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color recording apparatus, such as a television image or a captain system, which is useful for a hard copy of a full-color image and which can easily obtain a high-quality image in a small size. is there.
従来例の技術 近年、CRT等のディスプレイ装置のカラー化の傾向は目
覚ましく、これに伴いこれらのハードコピー装置として
カラーで記録のできるものが要望されている。なかでも
熱転写方式は、静寂性やメンテナンス性が優れているこ
とから、OA機器をはじめ多くの端末用プリンタのカラー
化の一翼を担うものとして、注目を集めている。2. Description of the Related Art In recent years, the trend toward colorization of display devices such as CRTs has been remarkable, and along with this, there is a demand for hard copy devices capable of recording in color. Above all, the thermal transfer method is attracting attention as a part of colorization of many terminal printers including OA equipment because of its excellent quietness and maintainability.
一般に、熱転写方式を用いてカラー記録を行う場合は、
第５図に示す如くインクを各色面順次で塗り分けたイン
クシート２と受像紙１を矢印ａ方向に搬送させながら、
発熱素子を直線状に配列したサーマルヘッド３をこのイ
ンクシート２と受像紙１を介してプラテンローラ４に押
圧して、各色による各１ライン分の画情報に応じた発熱
素子を発熱させ、熱転写による記録を行わせる。このよ
うにして、一色目のインクによって１ページ分の記録を
行わせた後に受像紙１をその記録開始位置がサーマルヘ
ッド部にくるように矢印ｂ方向へ引き戻し、次いで二色
目の１ページ分の記録を行い、同様にして三色目の１ペ
ージ分の記録を行って、減色混合法によるカラー画像の
記録を行わせる。従来受像紙１はキャプスタンローラ５
とピンチローラ６の間で挾持されており、駆動手段７に
よってキャプスタンローラ５を回転駆動することにより
往復搬送する。また受像紙１を引き戻す際、プラテンロ
ーラ４は駆動手段７によりスリップ機構８を介して回転
し、受像紙１は押圧ローラ９とプラテンローラ４の挾持
位置で張力を付与されキャプスタンローラ５とプラテン
ローラ４の間で張架される。Generally, when performing color recording using the thermal transfer method,
As shown in FIG. 5, while the ink sheet 2 and the image receiving paper 1 in which inks are separately applied in the respective color planes are conveyed in the direction of arrow a,
The thermal head 3 in which the heating elements are linearly arranged is pressed against the platen roller 4 via the ink sheet 2 and the image receiving paper 1, and the heating elements corresponding to the image information for each line of each color are heated to perform thermal transfer. Record by. In this way, after printing one page with the ink of the first color, the image receiving paper 1 is pulled back in the direction of the arrow b so that the recording start position comes to the thermal head portion, and then one page of the second color is printed. Recording is performed, and similarly, one page of the third color is recorded, and a color image is recorded by the subtractive color mixing method. Conventional image receiving paper 1 is capstan roller 5
It is sandwiched between the pinch roller 6 and the pinch roller 6, and is reciprocally conveyed by rotationally driving the capstan roller 5 by the driving means 7. Further, when the image receiving paper 1 is pulled back, the platen roller 4 is rotated by the driving means 7 via the slip mechanism 8, and the image receiving paper 1 is tensioned at the position where the pressing roller 9 and the platen roller 4 are held, and the capstan roller 5 and the platen roller 5 are pulled. It is stretched between the rollers 4.
発明が解決しようとする問題点 ところてこのような方法だと、受像紙１の搬送手段とし
て少なくともキャプスタンローラ５とピンチローラ６、
プラテンローラ４と押圧ローラ９の２組４個の圧接ロー
ラが必要で小型化が難しく、またキャプスタンローラ５
とピンチローラ６の圧接位置で常に受像紙１を挾持して
おく必要があり、受像紙１上の非記録部が長くなって必
然的に記録部が短くなり、同時に受像紙としてカット紙
を用いることが困難になるという欠点を有していた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, with such a method, at least the capstan roller 5 and the pinch roller 6 are used as the conveying means of the image receiving paper 1.
The platen roller 4 and the pressing roller 9 require two sets of four pressure contact rollers, which makes it difficult to reduce the size, and the capstan roller 5
It is necessary to always hold the image receiving paper 1 at the press contact position between the pinch roller 6 and the pinch roller 6, the non-recording portion on the image receiving paper 1 becomes long and the recording portion becomes inevitably short, and at the same time, cut paper is used as the image receiving paper. It had the drawback of becoming difficult.
問題点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に、プラテンロー
ラの周上に受像紙の一部を巻回して記録時と引き戻し時
でそれぞれ正逆方向に回転駆動させ、記録手段に対して
記録時上流側で受像紙を介してプラテンローラに圧接す
る第１のピンチローラと、下流側で受像紙を介してプラ
テンローラに圧接する第２のピンチローラとを設け、引
き戻し時は第２のピンチローラの圧接力を第１のピンチ
ローラの圧接力と同じかやや少なくし、記録時は第２の
ピンチローラの圧接力を第１のピンチローラの圧接力よ
りも大きくして、構成を簡略化し、非記録部を短くし、
受像紙の搬送精度を向上させて色ずれを少なくすること
ができるものである。Means for Solving the Problems In order to solve the above problems, according to the present invention, a part of an image receiving paper is wound around the circumference of a platen roller and is driven to rotate in forward and reverse directions during recording and pulling back, respectively. A first pinch roller that is in pressure contact with the platen roller via the image receiving paper on the upstream side during recording with respect to the recording means, and a second pinch roller that is in pressure contact with the platen roller via the image receiving paper on the downstream side; When pulling back, the pressure contact force of the second pinch roller is made equal to or slightly less than the pressure contact force of the first pinch roller, and when recording, the pressure contact force of the second pinch roller is made larger than the pressure contact force of the first pinch roller. To simplify the structure and shorten the non-recording part,
It is possible to improve the conveyance accuracy of the image receiving paper and reduce color misregistration.
作用 本発明は上記した構成により、受像紙の搬送手段は、プ
ラテンローラとこれに圧接する一対のピンチローラだけ
となって簡略化され、同時に受像紙の挾持位置であるプ
ラテンローラとピンチローラの圧接位置を記録手段に近
づけることができるため受像紙上の非記録部を短くする
ことができる。さらにまた、記録手段の圧接，離間によ
る受像紙の記録時と引き戻し時の搬送量の違いを補正す
るように、記録時のみ下流側のピンチローラの圧接力を
上流側のピンチローラの圧接力よりも大きくして記録手
段の圧接による抵抗に対抗させ、受像紙の搬送精度を向
上させて色ずれを少なくすることができる。With the above-described structure, the present invention is simplified in that the image receiving sheet conveying means is only a platen roller and a pair of pinch rollers that are in pressure contact with the platen roller, and at the same time, the platen roller and pinch roller, which are the pinching positions of the image receiving sheet, are in pressure contact. Since the position can be brought closer to the recording means, the non-recording portion on the image receiving paper can be shortened. Furthermore, the pressure contact force of the downstream pinch roller is set to be smaller than the pressure contact force of the upstream pinch roller only during recording so as to correct the difference in conveyance amount between recording and pulling back the image receiving paper due to pressure contact and separation of the recording means. Can also be made larger to counter the resistance due to the pressure contact of the recording means, the conveyance accuracy of the image receiving paper can be improved, and the color shift can be reduced.
実施例 以下、本発明の第一の実施例の構成を、添付図面にもと
ずいて説明する。Example Hereinafter, the configuration of a first example of the present invention will be described with reference to the accompanying drawings.
第１図は、本発明の第一の実施例におけるカラー記録装
置の基本構成図である。第１図において11は受像紙、12
はPETフィルム等の支持体上の受像紙11と向い合う面に
加熱により流動性を有するようなインクを各色１ページ
分ずつイエロー，マゼンタ，シアンと順次塗り分けたイ
ンクシート、13は発熱素子13aを受像紙11の幅方向に直
線状に配列するライン型のサーマルヘッド、14は受像紙
11の一部を巻回したプラテンローラ、15および16は受像
紙11を介してプラテンローラ14に圧接するピンチローラ
である。17はプラテンローラ14を双方向に回転駆動する
ステップモータなどの駆動手段、18は駆動手段17の駆動
力をプラテンローラ14に伝達するタイミングベルトなど
の駆動伝達手段、19および20はサーマルヘッド13と一体
的に動作しインクシート12をガイドするシートガイドで
ある。また、21はピンチローラ軸15aを回転可能に支持
し固定軸21aのまわりに回動するピンチローラ支持部
材、22はピンチローラ軸16aを回転可能に支持し固定軸2
2aのまわりに回動するピンチローラ支持部材、23はピン
チローラ15がプラテンローラ14に圧接するようピンチロ
ーラ支持部材21と匡体（図示せず）の間に張架した引っ
張りコイルバネ、24はピンチローラ16がプラテンローラ
14に圧接するようピンチローラ支持部材22と匡体（図示
せず）の間に張架した引っ張りコイルバネである。25は
サーマルヘッド13およびシートガイド19,20を一体的に
支持するヘッド支持部材で、図示しない手段によりサー
マルヘッド13をプラテンローラ14に圧接，離間するよう
固定軸25aのまわりに回動する。26はピンチローラ支持
部材21とヘッド支持部材25との間に張架した引っ張りコ
イルバネである。ここでピンチローラ支持部材21,22、
ヘッド支持部材25および引っ張りコイルバネ23,24,26は
ピンチローラ圧接手段を構成しており、ヘッド支持部材
25の回動に伴い、引っ張りコイルバネ23および26の引っ
張り力が変化してピンチローラ15のプラテンローラ14に
対する圧接力を変化させる構成になっている。FIG. 1 is a basic configuration diagram of a color recording apparatus according to the first embodiment of the present invention. In FIG. 1, 11 is an image receiving paper, 12
Is an ink sheet in which ink, which has fluidity by heating, is applied to the surface of the support such as PET film facing the image receiving paper 11 one by one for each color, yellow, magenta, and cyan in order, and 13 is a heating element 13a. Line type thermal heads that are arranged linearly in the width direction of the image receiving paper 11, 14 is the image receiving paper
A platen roller around which a part of 11 is wound, and 15 and 16 are pinch rollers pressed against the platen roller 14 via the image receiving paper 11. Reference numeral 17 is a drive means such as a step motor for rotationally driving the platen roller 14 bidirectionally, 18 is a drive transmission means such as a timing belt for transmitting the drive force of the drive means 17 to the platen roller 14, and 19 and 20 are the thermal head 13 and It is a sheet guide that operates integrally and guides the ink sheet 12. Further, 21 is a pinch roller supporting member that rotatably supports the pinch roller shaft 15a and rotates around the fixed shaft 21a, and 22 is a fixed shaft 2 that rotatably supports the pinch roller shaft 16a.
2a is a pinch roller supporting member that rotates around 23a, 23 is a tension coil spring stretched between the pinch roller supporting member 21 and a casing (not shown) so that the pinch roller 15 is in pressure contact with the platen roller 14, and 24 is a pinch. Roller 16 is a platen roller
It is a tension coil spring stretched between a pinch roller support member 22 and a casing (not shown) so as to be pressed against the pressure roller 14. Reference numeral 25 denotes a head support member that integrally supports the thermal head 13 and the sheet guides 19 and 20, and rotates the fixed head 25a around the fixed shaft 25a so that the thermal head 13 is pressed against and separated from the platen roller 14 by means not shown. Reference numeral 26 is a tension coil spring stretched between the pinch roller support member 21 and the head support member 25. Here, the pinch roller support members 21, 22,
The head supporting member 25 and the tension coil springs 23, 24, 26 constitute a pinch roller pressure contact means, and the head supporting member 25
With the rotation of 25, the pulling forces of the tension coil springs 23 and 26 change to change the pressure contact force of the pinch roller 15 to the platen roller 14.
いま、第１図に示すカラー記録装置においては、受像紙
11はプラテンローラ14表面において、ピンチローラ15お
よび16のみによる圧接を受ける場合と、このうえにサー
マルヘッド13による圧接も受ける場合の２つの圧接形態
があり、ピンチローラの押圧力を変化させなければ両者
のあいだには受像紙11の搬送量の違いがあるはずであ
る。例として、プラテンローラ14に硬度45度のシリコン
ゴムを厚さ3mmで巻装させた直径23mmのゴムローラを用
い、ピンチローラ15および16として直径14mmの金属ロー
ラを用い、サーマルヘッド13の圧接力P0を3kg、ピンチ
ローラ16の圧接力P2を2kgに固定したうえで、ピンチロ
ーラ15の圧接力P1を1kgから5kgまで変化させ、受像紙11
の矢印ｃ方向（記録時のプラテンローラ14の回転方向）
への搬送量をサーマルヘッド13の圧接時，離間時で比較
測定した結果を第２図に示す。図中ａはサーマルヘッド
13の圧接時、ｂは離間時を表しており、P1＞P2の範囲で
いずれも圧接力P1とともに増加の傾向を示している。こ
れは圧接力P1の増加に伴って、ピンチローラ15の圧接位
置におけるプラテンローラ14の表面のゴム層がせん断ひ
ずみを受けて伸張し、みかけ上の周長が長くなって受像
紙11の搬送速度が速くなり、同時にプラテンローラ14と
受像紙11の摩擦力が増加して受像紙11の搬送力が増える
ためである。またサーマルヘッド13の圧接時において
は、受像紙11が摩擦負荷を受けるため、受像紙11の搬送
量は短くなり、ａはｂより小さくなる。いま、一対のピ
ンチローラは同一形状であるので、サーマルヘッド13の
離間状態で両ピンチローラの圧接力（P1,P2）を同じに
すれば、受像紙11の往復搬送量は同じになる。従って、
サーマルヘッド13の離間時のピンチローラ15の圧接力P1
は、ピンチローラ16の圧接力P2と同じ2kgに設定し、こ
のときの受像紙11の搬送量270mm（図中ｂのグラフか
ら）が受像紙11の引き戻し量となる。次に、サーマルヘ
ッド13の圧接状態で受像紙11の搬送量を270mmにするた
めには、図中ａのグラフからピンチローラ15の圧接力P1
を4kgにすればよい。以上のことから、第１図における
引っ張りコイルバネ23,24,26の引っ張り力も、サーマル
ヘッド13の圧接時と離間時において、P2を不変にしP1を
変化させて受像紙11の往復搬送量を同じにするよう設定
してある。Now, in the color recording apparatus shown in FIG.
11 has two pressure contact forms on the surface of the platen roller 14, that is, pressure contact by only the pinch rollers 15 and 16 and additionally pressure contact by the thermal head 13 as well, unless the pressing force of the pinch roller is changed. There should be a difference in the conveyance amount of the image receiving paper 11 between the two. As an example, a rubber roller having a diameter of 23 mm in which a silicon rubber having a hardness of 45 degrees is wound around the platen roller 14 at a thickness of 3 mm is used, and a metal roller having a diameter of 14 mm is used as the pinch rollers 15 and 16, and a pressure contact force P of the thermal head 13 is used. After fixing 0 to 3 kg and pinch roller 16 pressure contact force P 2 to 2 kg, change the pinch roller 15 pressure contact force P 1 from 1 kg to 5 kg.
Arrow c direction (direction of rotation of platen roller 14 during recording)
FIG. 2 shows the results of comparative measurement of the transport amount to the thermal head 13 when the thermal head 13 is pressed and when it is separated. In the figure, a is a thermal head
13 indicates the pressure contact state and b indicates the separated state, and both tend to increase with the pressure contact force P 1 in the range of P 1 > P 2 . This is because as the pressing force P 1 increases, the rubber layer on the surface of the platen roller 14 at the pressing position of the pinch roller 15 receives shear strain and expands, and the apparent peripheral length becomes longer and the image receiving paper 11 is conveyed. This is because the speed is increased, and at the same time, the frictional force between the platen roller 14 and the image receiving paper 11 is increased and the conveying force of the image receiving paper 11 is increased. Further, when the thermal head 13 is pressed, the image receiving paper 11 is subjected to a frictional load, so that the carrying amount of the image receiving paper 11 becomes short and a becomes smaller than b. Now, since the pair of pinch rollers have the same shape, if the pressure contact forces (P 1 , P 2 ) of both the pinch rollers are made the same in the separated state of the thermal head 13, the reciprocating conveyance amount of the image receiving paper 11 becomes the same. . Therefore,
Pressure contact force of the pinch roller 15 when the thermal head 13 is separated P 1
Is set to 2 kg, which is the same as the pressure contact force P 2 of the pinch roller 16, and the amount 270 mm of conveyance of the image receiving paper 11 at this time (from the graph of b in the figure) is the amount of pulling back the image receiving paper 11. Next, in order to set the conveyance amount of the image receiving paper 11 to 270 mm in the pressure contact state of the thermal head 13, the pressure contact force P 1 of the pinch roller 15 is determined from the graph in FIG.
Should be 4 kg. From the above, the pulling force of the tension coil springs 23, 24, and 26 in FIG. 1 also changes the reciprocating conveyance amount of the image receiving paper 11 by keeping P 2 unchanged and changing P 1 when the thermal head 13 is pressed and separated. It is set to be the same.
次に、この第一の実施例におけるカラー記録装置の動作
を第１図をもちいて説明する。記録開始前、受像紙11は
ピンチローラ15のプラテンローラ14への圧接位置とピン
チローラ16のプラテンローラ14への圧接位置との間でプ
ラテンローラ14に密着しており、インクシート12の発熱
素子13aと対向する位置には、一色目のイエローインク
の記録開始位置がきており、サーマルヘッド13、インク
シート12、シートガイド19,20およびヘッド支持部材25
はプラテンローラ14から離間した状態（13′,12′,1
9′,20′および25′）にある。記録開始時には、図示し
ない手段によってヘッド支持部材25を回動しサーマルヘ
ッド13およびシートガイド19,20を矢印ｄ方向に移動し
て、発熱素子13aをインクシート12および受像紙11を介
してプラテンローラ14に圧接させる。次に、イエローに
よる各１ライン分の画情報に応じた発熱素子13aを発熱
させ、イエローインクを選択的に加熱して受像紙11上に
転写をおこなわせる。同時に、画情報に同期して駆動手
段17を駆動し、プラテンローラ14を１ラインづつ矢印ｃ
方向へ回転させる。ここで、ピンチローラ15およびピン
チローラ16はプラテンローラ14の回転に従動的に回転す
るが、この時引っ張りコイルバネ26の引っ張り力は弱
く、従ってピンチローラ15の圧接力P1は強力なほうの値
になってサーマルヘッド13の圧接による負荷を補正して
おり、受像紙11を正規の長さ矢印ｃ方向へ搬送する。ま
たインクシート12は、サーマルヘッド13とプラテンロー
ラ14の圧接位置において、受像紙11との摩擦力によって
矢印ｅ方向に搬送され、図示しない手段によって張力を
付与しつつ巻き取られる。このようにしてイエローイン
クによって１ページ分の記録を完了すると、いったん駆
動手段17を停止してプラテンローラ14を止め、図示しな
い手段によりサーマルヘッド13、シートガイド19,20お
よびヘッド支持部材25を矢印ｆ方向に移動してサーマル
ヘッド13およびインクシート12をプラテンローラ14から
離間する。（13′,19′,20′および25′の状態）この
後、インクシート12の発熱素子13aと対向する位置に二
色目のマゼンタインクの記録開始位置が来るまで、図示
しない手段によってインクシート12を矢印ｅ方向に搬送
させる。またこの際駆動手段17を駆動し、プラテンロー
ラ14を矢印ｇ方向へ回転させる。ここで、引っ張りコイ
ルバネ26の引っ張り力は強く、従ってピンチローラ15の
圧接力P1は弱いほうの値（ピンチローラ16の圧接力P2と
同じ）になり、受像紙11を正規の長さ矢印ｇ方向へ搬送
する。このようにして受像紙11を記録開始位置まで引き
戻して、二色目のマゼンタインクの記録開始状態にな
る。この後サーマルヘッド13およびインクシート12をプ
ラテンローラ14に押圧して、イエローインクによる記録
画像上にマゼンタインクによる１ページ分の記録をおこ
なう。以下同様にして三色目のシアンインクによる記録
をおこなって、減色混合法によるカラー画像の記録を完
了する。Next, the operation of the color recording apparatus in the first embodiment will be described with reference to FIG. Before the start of recording, the image receiving paper 11 is in close contact with the platen roller 14 between the position where the pinch roller 15 is pressed against the platen roller 14 and the position where the pinch roller 16 is pressed against the platen roller 14, and the heating element of the ink sheet 12 is The recording start position of the first color yellow ink comes at a position facing the 13a, and the thermal head 13, the ink sheet 12, the sheet guides 19, 20 and the head support member 25 are provided.
Is separated from the platen roller 14 (13 ', 12', 1
9 ', 20' and 25 '). At the start of recording, the head supporting member 25 is rotated by means (not shown) to move the thermal head 13 and the sheet guides 19 and 20 in the direction of arrow d, and the heating element 13a is moved through the ink sheet 12 and the image receiving paper 11 to the platen roller. Press against 14 Next, the heating element 13a corresponding to the image information for each line of yellow is heated to selectively heat the yellow ink to transfer it to the image receiving paper 11. At the same time, the driving means 17 is driven in synchronization with the image information to move the platen roller 14 line by line by the arrow c.
Rotate in the direction. Here, the pinch roller 15 and the pinch roller 16 rotate following the rotation of the platen roller 14, but at this time, the tensile force of the tension coil spring 26 is weak, and therefore the pressure contact force P 1 of the pinch roller 15 is the stronger value. Then, the load due to the pressure contact of the thermal head 13 is corrected, and the image receiving paper 11 is conveyed in the direction of the regular length arrow c. Further, the ink sheet 12 is conveyed in the direction of arrow e by the frictional force between the thermal head 13 and the platen roller 14 due to the frictional force with the image receiving paper 11, and is wound while applying tension by means not shown. When the recording for one page is completed with the yellow ink in this way, the driving means 17 is once stopped to stop the platen roller 14, and the thermal head 13, the sheet guides 19 and 20 and the head supporting member 25 are arrowed by means not shown. The thermal head 13 and the ink sheet 12 are separated from the platen roller 14 by moving in the f direction. (States of 13 ', 19', 20 'and 25') After that, until the recording start position of the magenta ink of the second color comes to a position facing the heating element 13a of the ink sheet 12, the ink sheet 12 Is conveyed in the direction of arrow e. At this time, the driving means 17 is driven to rotate the platen roller 14 in the direction of arrow g. Here, the tension force of the tension coil spring 26 is strong, and therefore the pressure contact force P 1 of the pinch roller 15 becomes the weaker value (the same as the pressure contact force P 2 of the pinch roller 16), and the image receiving paper 11 is moved to the normal length arrow. Transport in g direction. In this way, the image receiving paper 11 is pulled back to the recording start position, and the recording start state of the magenta ink of the second color is set. Thereafter, the thermal head 13 and the ink sheet 12 are pressed against the platen roller 14 to record one page of magenta ink on the recorded image of yellow ink. In the same manner, recording with the third color cyan ink is performed, and recording of the color image by the subtractive color mixing method is completed.
以上のようにして、本発明の第一の実施例によれば、受
像紙11の搬送手段をプラテンローラ14とこれに押圧する
２個のピンチローラ19,20による簡単な構成とすること
ができる。同時に受像紙の挾持位置であるプラテンロー
ラとピンチローラの圧接位置をサーマルヘッドに近づけ
ることができるため受像紙上の非記録部を短くすること
ができ、しかも受像紙11の往復搬送量を同じにして、色
ずれの少ない良好なカラー画像を得ることができる。As described above, according to the first embodiment of the present invention, the conveying means for the image receiving paper 11 can be made to have a simple structure by the platen roller 14 and the two pinch rollers 19, 20 pressed against the platen roller 14. . At the same time, the pressure contact position of the platen roller and the pinch roller, which is the holding position of the image receiving paper, can be brought close to the thermal head, so that the non-recording part on the image receiving paper can be shortened and the reciprocating amount of the image receiving paper 11 is made the same. A good color image with little color shift can be obtained.
以下、本発明の第二の実施例の構成を、添付図面にもと
づいて説明する。The configuration of the second embodiment of the present invention will be described below with reference to the accompanying drawings.
第３図は、本発明の第二の実施例におけるカラー記録装
置の基本構成図である。第３図において11は受像紙、12
はインクシート、13はサーマルヘッド、14はプラテンロ
ーラ、15および16はピンチローラ、17は駆動手段、18は
駆動伝達手段、19および20はシートガイド、21および22
はピンチローラ支持部材、25はヘッド支持部材で、以上
は第１図の構成と同様なものである。第１図の構成と異
なるのは、ピンチローラ15の圧接力P1を不変にし、ピン
チローラ16の圧接力P2を変化させるようにした点で、27
はピンチローラ15がプラテンローラ14に圧接するようピ
ンチローラ支持部材21と匡体（図示せず）の間に張架し
た引っ張りコイルバネ、28はピンチローラ16がプラテン
ローラ14に圧接するようピンチローラ支持部材22とヘッ
ド支持部材25の間に張架した引っ張りコイルバネであ
る。ここでピンチローラ支持部材21,22、ヘッド支持部
材25および引っ張りコイルバネ27,28はピンチローラ圧
接手段を構成しており、ヘッド支持部材25の回動に伴
い、引っ張りコイルバネ28の引っ張り力が変化してピン
チローラ16のプラテンローラ14に対する圧接力を変化さ
せる構成になっている。FIG. 3 is a basic configuration diagram of a color recording apparatus according to the second embodiment of the present invention. In FIG. 3, 11 is an image receiving paper, 12
Is an ink sheet, 13 is a thermal head, 14 is a platen roller, 15 and 16 are pinch rollers, 17 is drive means, 18 is drive transmission means, 19 and 20 are sheet guides, 21 and 22
Is a pinch roller support member, and 25 is a head support member. The above is the same as the configuration of FIG. The difference from the configuration of FIG. 1 is that the pressure contact force P 1 of the pinch roller 15 is made invariable and the pressure contact force P 2 of the pinch roller 16 is changed.
Is a tension coil spring stretched between the pinch roller support member 21 and a casing (not shown) so that the pinch roller 15 is pressed against the platen roller 14, and 28 is a pinch roller support so that the pinch roller 16 is pressed against the platen roller 14. A tension coil spring stretched between a member 22 and a head support member 25. Here, the pinch roller support members 21 and 22, the head support member 25, and the tension coil springs 27 and 28 constitute a pinch roller pressure contact means, and as the head support member 25 rotates, the tension force of the tension coil spring 28 changes. The contact pressure of the pinch roller 16 against the platen roller 14 is changed.
いま、第２図と同様のプラテンローラ14およびピンチロ
ーラを用いて、サーマルヘッド13の圧接力P0を3kg、ピ
ンチローラ15の圧接力P1を4kgに固定したうえで、ピン
チローラ16の圧接力P2を1kgから5kgまで変化させ、受像
紙11の矢印ｃ方向（記録時のプラテンローラ14の回転方
向）への搬送量をサーマルヘッド13の圧接時、離間時で
比較測定した結果を第４図に示す。図中ａはサーマルヘ
ッド13の圧接時、ｂは離間時を表しており、P1＞P2の範
囲で搬送量はいずれも圧接力P2の増加とともに減少の傾
向を示している。これは圧接力P2の増加に伴って、ピン
チローラ15による受像紙11の搬送力に対する負荷が増加
するからである。またサーマルヘッド13の圧接時におい
ては、受像紙11が摩擦負荷を受けるため、受像紙11の搬
送量は短くなり、ａはｂより小さくなる。第２図の場合
と同様に、サーマルヘッド13の離間状態で両ピンチロー
ラの圧接力（P1,P2）を同じにすれば、受像紙11の往復
搬送量は同じになるから、サーマルヘッド13の離間時の
ピンチローラ16の圧接力P2は、ピンチローラ15の圧接力
P1と同じ4kgに設定する。また、このときの受像紙11の
搬送量から第２図と同様にして、サーマルヘッド13圧接
時のピンチローラ16の圧接力P2を2kgとすればよい。以
上のことから、第３図における引っ張りコイルバネ27,2
8の引っ張り力も、サーマルヘッド13の圧接時と離間時
において、P1を不変にしp2を変化させて受像紙11の往復
搬送量を同じにするよう設定してある。Now, using the same platen roller 14 and pinch roller as in FIG. 2, the pressure contact force P 0 of the thermal head 13 is fixed to 3 kg, and the pressure contact force P 1 of the pinch roller 15 is fixed to 4 kg. By changing the force P 2 from 1 kg to 5 kg, the conveyance amount of the image receiving paper 11 in the direction of arrow c (the rotation direction of the platen roller 14 at the time of recording) is compared and measured when the thermal head 13 is pressed and separated. It is shown in FIG. In the figure, a represents pressure contact of the thermal head 13 and b represents separation thereof, and in the range of P 1 > P 2 , the transport amount shows a tendency to decrease with an increase in the pressure contact force P 2 . This is because the load on the conveyance force of the image receiving paper 11 by the pinch roller 15 increases as the pressure contact force P 2 increases. Further, when the thermal head 13 is pressed, the image receiving paper 11 is subjected to a frictional load, so that the carrying amount of the image receiving paper 11 becomes short and a becomes smaller than b. As in the case of FIG. 2, if the pressure contact forces (P 1 , P 2 ) of both pinch rollers are made the same in the separated state of the thermal head 13, the reciprocating conveyance amount of the image receiving paper 11 becomes the same, so the thermal head The pressure contact force P 2 of the pinch roller 16 when separating 13 is the pressure contact force of the pinch roller 15.
Set to 4 kg, the same as P 1 . Further, from the conveyance amount of the image receiving paper 11 at this time, the pressure contact force P 2 of the pinch roller 16 at the time of pressure contact of the thermal head 13 may be set to 2 kg in the same manner as in FIG. From the above, the tension coil springs 27, 2 in FIG.
The pulling force of 8 is set so that P 1 is unchanged and p 2 is changed to make the reciprocating conveyance amount of the image receiving paper 11 the same when the thermal head 13 is pressed and separated.
上記のように構成された第二の実施例のカラー記録装置
の動作は、第一の実施例のカラー記録装置とほぼ同様で
ある。ただしヘッド圧接時（記録時）には引っ張りコイ
ルバネ28の引っ張り力は弱く、従ってピンチローラ16の
圧接力P2は弱いほうの値になってサーマルヘッド13の圧
接による負荷を補正しており、ヘッド離間時（引き戻し
時）には引っ張りコイルバネ28の引っ張り力は強く、従
ってピンチローラ16の圧接力P2は強いほうの値（ピンチ
ローラ15の圧接力P1と同じ）になって受像紙11の往復搬
送量を一定にする。The operation of the color recording apparatus of the second embodiment configured as described above is almost the same as that of the color recording apparatus of the first embodiment. However, the tension force of the tension coil spring 28 is weak at the time of head pressure contact (during recording). Therefore, the pressure contact force P 2 of the pinch roller 16 becomes a weaker value to correct the load due to the pressure contact of the thermal head 13. At the time of separation (at the time of pulling back), the pulling force of the pulling coil spring 28 is strong, so that the pressure contact force P 2 of the pinch roller 16 becomes a stronger value (the same as the pressure contact force P 1 of the pinch roller 15) and the image receiving paper 11 Keep the amount of reciprocating conveyance constant.
以上のように、第二の実施例によれば、受像紙11の往復
搬送量を同じにして、色ずれの少ない良好なカラー画像
を得ることができる。As described above, according to the second embodiment, it is possible to obtain a good color image with less color misregistration by making the reciprocating conveyance amount of the image receiving paper 11 the same.
なお、全実施例において、サーマルヘッド13離間時のピ
ンチローラ15,16の圧接力を同じ（P1−P2）としたが、
受像紙の搬送量がサーマルヘッドの圧接時と同じであれ
ば、ピンチローラ16の圧接力をピンチローラ15の圧接力
より大きく（P2＞P1）設定してもよい。In all the examples, the pressure contact forces of the pinch rollers 15 and 16 when the thermal head 13 was separated were the same (P 1 -P 2 ).
If the conveyance amount of the image receiving paper is the same as when the thermal head is in pressure contact, the pressure contact force of the pinch roller 16 may be set larger than the pressure contact force of the pinch roller 15 (P 2 > P 1 ).
また、全実施例において、ピンチローラの圧接力を変化
させる手段としてヘッド支持部材の回動を利用したが、
代わりにソレノイドやカム等の機構をもちいても同様の
効果を得ることができる。Further, in all the examples, the rotation of the head support member is used as the means for changing the pressure contact force of the pinch roller.
Alternatively, a mechanism such as a solenoid or a cam may be used to obtain the same effect.
また、全実施例において、サーマルヘッド13はライン型
のものとしたが、シリアル型のものを使用してもよい。Further, although the thermal head 13 is of the line type in all the examples, a serial type may be used.
このほか、全実施例において、インクの記録順はイエロ
ー，マゼンタ，シアンとしたが別の順でもよいし、イン
クの種類は三色としたが、三色以外でもよいことはいう
までもない。In addition, in all of the embodiments, the ink recording order is yellow, magenta, and cyan, but it may be another order, and the ink type is three colors, but it goes without saying that it may be a color other than three colors.
発明の効果 本発明は、受像紙の搬送手段を、プラテンローラとこれ
に押圧する２個のピンチローラによる簡単な構成とし、
また受像紙の挾持位置であるプラテンローラとピンチロ
ーラの圧接位置を記録手段に近づけて受像紙上の非記録
部を短くし、しかも記録手段の圧接、離間による受像紙
の記録時と引き戻し時の搬送量の違いを補正するよう
に、一対のピンチローラのうち少なくともどちらかのピ
ンチローラの圧接力を記録時と引き戻し時で異なる値に
して受像紙の搬送精度を向上させ、色ずれの少ない良好
なカラー画像を得ることができる。EFFECTS OF THE INVENTION According to the present invention, the image receiving sheet conveying means has a simple structure including a platen roller and two pinch rollers pressed against the platen roller.
Also, the pressure contact position of the platen roller and pinch roller, which is the holding position of the image receiving paper, is brought close to the recording means to shorten the non-recording portion on the image receiving paper, and further, the image receiving paper is conveyed at the time of recording and pulling back by the pressure contact and separation of the recording means. In order to correct the difference in amount, at least one of the pair of pinch rollers has a different pressure contact force at the time of recording and at the time of pulling back to improve the conveyance accuracy of the image receiving paper and reduce the color deviation. A color image can be obtained.
第１図は本発明の第一の実施例におけるカラー記録装置
の基本構成を示す側面図、第２図はピンチローラP1の圧
接力に対する、サーマルヘッドの圧接時と離間時の受像
紙搬送量の変化を示す特性図、第３図は本発明の第二の
実施例におけるカラー記録装置の基本構成を示す側面
図、第４図はピンチローラP2の圧接力に対する、サーマ
ルヘッドの圧接時と離間時の受像紙搬送量の変化を示す
特性図で、第５図は従来のカラー記録装置の基本構成を
示す側面図である。 11……受像紙、12……インクシート、13……サーマルヘ
ッド、14……プラテンローラ、15,16……ピンチロー
ラ、17……駆動手段、21,22……ピンチローラ支持部
材、23,24,26,27,28……引っ張りコイルバネ、25……ヘ
ッド支持部材。FIG. 1 is a side view showing the basic structure of a color recording apparatus according to the first embodiment of the present invention, and FIG. 2 is a conveyance amount of image receiving paper when the thermal head is pressed and separated from the pressure contact force of the pinch roller P 1 . FIG. 3 is a side view showing the basic construction of the color recording apparatus in the second embodiment of the present invention, and FIG. 4 is the time when the thermal head is pressed against the pressing force of the pinch roller P 2 . FIG. 5 is a characteristic diagram showing a change in the amount of image receiving paper conveyed at the time of separation, and FIG. 5 is a side view showing a basic configuration of a conventional color recording apparatus. 11 ... Image receiving paper, 12 ... Ink sheet, 13 ... Thermal head, 14 ... Platen roller, 15, 16 ... Pinch roller, 17 ... Driving means, 21, 22 ... Pinch roller support member, 23, 24,26,27,28 …… Tension coil spring, 25 …… Head support member.
Claims (1)
一部を巻回して記録時と引き戻し時でそれぞれ正逆方向
に回転駆動するプラテンローラと、記録時は受像紙を介
して前記プラテンローラに圧接し引き戻し時は離間する
記録手段と、受像紙搬送路上の前記記録手段に対して記
録時上流側で受像紙を介して前記プラテンローラに圧接
する第１のピンチローラと、前記第１のピンチローラを
圧接させる第１のピンチローラ圧接手段と、受像紙搬送
路上の前記記録手段に対して記録時下流側で受像紙を介
して前記プラテンローラに圧接する第２のピンチローラ
と、前記第２のピンチローラを圧接させる第２のピンチ
ローラ圧接手段とを設け、前記記録手段の圧接・離間動
作を前記第１または第２のピンチローラ圧接手段と連動
させ、引き戻し時は前記第２のピンチローラの圧接力を
前記第１のピンチローラの圧接力と同じかやや少なく
し、記録時は前記第２のピンチローラの圧接力を前記第
１のピンチローラの圧接力よりも大きくするカラー記録
装置。1. A platen roller, the surface of which is made of an elastic member, around which a part of an image receiving paper is wound and is driven to rotate in forward and reverse directions at the time of recording and pulling back, respectively. And a first pinch roller that presses against the platen roller and separates when pulled back; and a first pinch roller that presses against the platen roller via the image receiving paper on the upstream side during recording with respect to the recording means on the image receiving paper conveying path. A first pinch roller pressing means for pressing the first pinch roller, and a second pinch roller for pressing the platen roller via the image receiving paper on the downstream side at the time of recording with respect to the recording means on the image receiving paper conveying path. And a second pinch roller pressure contact means for contacting the second pinch roller with each other, and the pressure contact / separation operation of the recording means is interlocked with the first or second pinch roller pressure contact means for pulling back. The pressure contact force of the second pinch roller is made equal to or slightly less than the pressure contact force of the first pinch roller, and the pressure contact force of the second pinch roller is made smaller than the pressure contact force of the first pinch roller during recording. Color recording device to enlarge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28601585A JPH07100384B2 (en) | 1985-12-19 | 1985-12-19 | Color recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28601585A JPH07100384B2 (en) | 1985-12-19 | 1985-12-19 | Color recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62144976A JPS62144976A (en) | 1987-06-29 |
| JPH07100384B2 true JPH07100384B2 (en) | 1995-11-01 |
Family
ID=17698878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28601585A Expired - Lifetime JPH07100384B2 (en) | 1985-12-19 | 1985-12-19 | Color recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100384B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0818450B2 (en) * | 1987-08-08 | 1996-02-28 | 三菱電機株式会社 | Thermal printer |
| GB2207886B (en) * | 1987-08-08 | 1991-11-06 | Mitsubishi Electric Corp | Thermal transcription printer |
| JPH029553U (en) * | 1988-06-23 | 1990-01-22 | ||
| JPH0371846A (en) * | 1989-08-11 | 1991-03-27 | Terumo Corp | Transport device of flexible continuous filament |
| JPH0469263A (en) * | 1990-07-11 | 1992-03-04 | Shinko Electric Co Ltd | Thermal transfer recorder |
| JPH06246942A (en) * | 1993-02-25 | 1994-09-06 | Mitsubishi Electric Corp | Thermal transfer printer |
-
1985
- 1985-12-19 JP JP28601585A patent/JPH07100384B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62144976A (en) | 1987-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |