JPS60977A - Thermal transfer recording apparatus - Google Patents

Thermal transfer recording apparatus

Info

Publication number
JPS60977A
JPS60977A JP10867183A JP10867183A JPS60977A JP S60977 A JPS60977 A JP S60977A JP 10867183 A JP10867183 A JP 10867183A JP 10867183 A JP10867183 A JP 10867183A JP S60977 A JPS60977 A JP S60977A
Authority
JP
Japan
Prior art keywords
recording
thermal transfer
heat generating
thermal head
thermal
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
JP10867183A
Other languages
Japanese (ja)
Inventor
Nobuo Oide
大出 延男
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10867183A priority Critical patent/JPS60977A/en
Publication of JPS60977A publication Critical patent/JPS60977A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/325Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet

Abstract

PURPOSE:To enable medium gradation recording by enabling multi-value recording without controlling energy supplied to each heat generating element corresponding to a recording pattern, by bringing the width of the heat generating resistor element of a thermal head into a specific range corresponding to the arrangement pitch of said element. CONSTITUTION:In a thermal transfer recording apparatus which performs recording in such a manner that a heat generating resistor element 2 is selectively operated to generate heat while a thermal transfer ink sheet 5 and plain paper are fed between a thermal head 7 wherein a plurality of the heat generating resistor elements are arranged in one line and a platen roller 8 in a superposed state, the width (a) of each heat generating resistor element 2 of the thermal head 7 is brought into a range of 0.35-0.75 times on the basis of the arrangement pitch (b) thereof.

Description

【発明の詳細な説明】 本発明はファクシミリ、プリンタなどに用いられる熱転
写記録装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal transfer recording device used in facsimiles, printers, and the like.

熱転写記録方式は熱転写シート上に塗布された熱溶融性
インクをサーマルヘッドの熱で溶融せしめ普通紙上に転
写記録する方式である。本方式は保存性の良い記録が得
られることや、容易にカラー記録ができるという利点が
あり、最近は特にカラー記録装置への適用についての開
発が盛んである。この熱転写記録方式によるカラー記録
方法として、イエロー、マゼンタ、シアンの3色の熱転
写シートを用いたドツトパターン法による記録が知られ
ている。ドツトパターン法とは複数個のドツトを画像の
1画素に対応させて擬似的に中間調を表現する方法であ
る。具体的には例えば1画素を2×2のマトリックスよ
りなる4個のドツトで構成した場合、前記4個のドツト
のうち記録する個数をo、1,2.3.4と変えること
で1画素を5つの記録濃度レベルで表現するものである
The thermal transfer recording method is a method in which heat-melting ink coated on a thermal transfer sheet is melted by the heat of a thermal head, and the ink is transferred and recorded onto plain paper. This method has the advantage of producing records with good storage stability and being able to easily record in color, and has recently been actively developed especially for application to color recording devices. As a color recording method using this thermal transfer recording method, recording by a dot pattern method using thermal transfer sheets of three colors of yellow, magenta, and cyan is known. The dot pattern method is a method of expressing halftones in a pseudo manner by associating a plurality of dots with one pixel of an image. Specifically, for example, if one pixel is composed of four dots made up of a 2 x 2 matrix, one pixel can be recorded by changing the number of dots recorded among the four dots to o, 1, 2, 3, and 4. is expressed using five recording density levels.

熱転写記録方式によるカラー記録に前記ドツトパターン
法を適用した場合は、イエロー、マゼンタ、シアンによ
る3色のρ〜転写シートを用いると、1画素で表現でき
る色の数はマ) IJソックスイズが1×1で7色、2
×2では64色、3×3では729色となり、マトリッ
クスヤイズを大きくするに従い多くの色を表現すること
ができる。しがしながら記録ドツトの密度が一定の場合
、マトリックスサイズを太きくすると1画素の大きさが
大きくなり(画素密度が小さくなシ)、画素の粗さが目
立つようになって画質の劣る記録画像となる。
When the dot pattern method is applied to color recording using a thermal transfer recording method, if a transfer sheet of three colors of yellow, magenta, and cyan is used, the number of colors that can be expressed by one pixel is m) IJ sock size is 1 x1 for 7 colors, 2
×2 has 64 colors, 3×3 has 729 colors, and as the matrix size increases, more colors can be expressed. However, if the density of recording dots is constant, increasing the matrix size will increase the size of one pixel (lower pixel density), making the roughness of the pixels more noticeable and recording poor image quality. It becomes an image.

また熱転写記録方式に用いられるサーマルヘッドの発熱
抵抗素子の密度は通常12素子/闘以下である。すなわ
ち前記記録ドツト密度は12ドツト/胴以下である。こ
の発熱抵抗素子密度の限界はHA上の困1廿さによって
価格9v高jhするという経済的理由によって生ずる。
Further, the density of heating resistive elements of a thermal head used in a thermal transfer recording system is usually 12 elements/unit or less. That is, the recording dot density is 12 dots/cylinder or less. This limit on the density of the heat generating resistor elements arises from economical reasons, such as the fact that the price increases by 9v due to the difficulty in HA.

従来の熱転写方式によるカラー記録は発熱抵抗素子密度
が8〜12素子/mのサーマルヘッドを用い、2×2、
または:3×3のマトリックスサイズを採用して1画素
当り64色または729色を表現したカラー記録が大1
+、i、’分である。これらによる記録像は一応の水準
の画となるものの、カラー印刷物と比較すると表現色が
少ないため自然さにおいてかなり劣る。このように表現
色が制限さnるのは前述したサーマルヘッドの発熱抵抗
素子密度に限界があることの他に前記記録ドツトが2値
(記録の有無ンのみの表現で中間調が表現できないこと
が主たる理由である。中間調記録(多値記録)の試みの
一つとして発熱抵抗素子のエネルギーC時間x箱5力)
を制御する方法があるが、低エネルギーでは転写不良が
生じ記録が行われにくいという欠点がある。ここで転写
不良とは熱溶融性インクが普通紙上に転写されない現象
を言い、熱転写方式では転写不良領域から濃度飽和飴域
の間のエネルギー邦が小さいため専ら2値記録において
のみ使用される。
Color recording by the conventional thermal transfer method uses a thermal head with a heat generating resistor element density of 8 to 12 elements/m, and a 2×2,
Or: Color recording that uses a 3x3 matrix size to express 64 or 729 colors per pixel is one of the largest
+,i,' minutes. Although the images recorded by these methods are of a certain level, they are considerably inferior in naturalness because they have fewer expressed colors compared to color printed matter. The reason why the expressed colors are limited in this way is that in addition to the above-mentioned limit on the density of the heat generating resistor element of the thermal head, the recording dots are binary (expressing only the presence/absence of recording and cannot express intermediate tones). This is the main reason.As one of the attempts at halftone recording (multi-value recording), the energy of the heating resistor element (C time x box 5 force)
There is a method to control this, but it has the disadvantage that low energy causes transfer defects and makes recording difficult. Here, transfer failure refers to a phenomenon in which heat-fusible ink is not transferred onto plain paper, and thermal transfer methods are used exclusively in binary recording because the energy range between the transfer failure area and the density saturated candy area is small.

これらのことから熱転写方式における多値記録の可能性
をサーマルヘッドに供給するエネルギーを制御する方法
で検討した結果、サーマルヘッドに供給するエネルギー
が大きくなるに従って記録ドツトの寸法が大きくなり、
記録ドツトの寸法がサーマルヘッドの発熱抵抗素子と同
程度以上になると転写不良が砂減するとともに、さらに
エネルギーを窩めれは記録ドツト寸法が容易に発熱抵抗
素子の太きさより大きくなることが明らかになった。一
般に熱転写記録装置に用いられているサーマルヘッドは
感熱記録装置(感熱記録紙を用いる装ff’+’、 )
に用いられているサーマルヘッドがそのまま用いられる
。この感熱記録では記録ドツト寸法は発熱抵抗素子寸法
よりあまり大きくならないため、通常のサーマルヘッド
では発熱抵抗素子の幅は発熱抵抗素子の配列ピッチの8
0%以上に設定されている。従ってこうしたサーマルヘ
ッドを用いた熱転写記録方式叡では転写不良の生じない
領域で記録ドツト寸法をあまシ大きく変えることはでき
ないという欠点があった。
Based on these facts, we investigated the possibility of multilevel recording using the thermal transfer method by controlling the energy supplied to the thermal head, and found that as the energy supplied to the thermal head increases, the size of the recording dots increases.
It is clear that when the size of the recording dot becomes equal to or larger than the heating resistor element of the thermal head, the number of transfer defects decreases, and furthermore, in order to absorb more energy, the recording dot size easily becomes larger than the thickness of the heating resistor element. Became. Generally, the thermal head used in a thermal transfer recording device is a thermal recording device (a device using thermal recording paperff'+', )
The thermal head used for this can be used as is. In this thermal recording, the recording dot size is not much larger than the heating resistor element size, so in a normal thermal head, the width of the heating resistor element is 8
It is set to 0% or more. Therefore, the thermal transfer recording method using such a thermal head has the disadvantage that the recording dot size cannot be changed to a large extent in areas where transfer defects do not occur.

本発明の目的は、上記の考察に基づき熱転再記f′1V
C適81.タザーマルヘッドの条件を明らかにし、中間
調記ゲフζにすぐれた熱転写記録装置を提供することに
、′I)る。
Based on the above considerations, the object of the present invention is to
C suitability 81. The purpose of the present invention is to clarify the conditions of a tazarmal head and provide a thermal transfer recording device with excellent halftone recording pitch ζ.

本発明によれば、複数の発熱抵抗素子を一列に配列して
なるサーマルヘッドとプラテンローラーとの間にだ(転
写シートと普通紙とを重ね合わせ搬送する様構を備λ2
る熱転写記録装置において、前記サーマルヘッドの発熱
抵抗素子の幅を該発熱抵抗素子の配列ピッチの0.35
倍以上0.75倍以下の大きさに設定することを特徴と
する熱転写記録装置が得られる。
According to the present invention, between a thermal head formed by arranging a plurality of heat generating resistive elements in a line and a platen roller (a structure is provided for conveying the transfer sheet and plain paper in an overlapping manner)
In a thermal transfer recording device, the width of the heating resistor element of the thermal head is set to 0.35 of the arrangement pitch of the heating resistor element.
A thermal transfer recording device is obtained, which is characterized in that the size is set to a size of 0.75 times or more.

次に図面を参照して本発明について詳細に鯖、明する。Next, the present invention will be explained in detail with reference to the drawings.

第1図は本発明の熱転写シート(Clのザーマルー、ラ
ドの一実施例を示ず断面しjで栖、る。同図において、
サーマルヘッドO例えはアルミナを主成分とするセラミ
ックの基板1と、複数の発グ(抵抗素72と、例えばカ
ラスペーストをスクリーン印刷して焼成[7てなる耐L
Z粍W・3とからなり、前記発熱抵抗素子2はそれぞれ
117 aのものを前言【コ基板l上に配列ピッチbで
一列に配列し例えd′厚1夙抵抗ペーストをスクリーン
印刷し匁り流、したものである。
FIG. 1 shows an embodiment of the thermal transfer sheet of the present invention (Cl's Thermal Lubricant and Lad), which is cross-sectionally shown at j. In the same figure,
Thermal head O For example, a ceramic substrate 1 whose main component is alumina, a plurality of resistive elements 72, and, for example, a color paste, is screen printed and fired [7].
Each of the heating resistive elements 2 consists of 117a of heat-generating resistor element 2, which is arranged in a row on a substrate l with an array pitch b, and is made by screen-printing a 1-thick resistor paste with a thickness of d'. Flow, that's what I did.

このように梢成し7にサーマルヘッドにおいて、的記配
列ヒツチb=125μ口1(索円コ密度8牙子/自)、
83μrn (ジ子密度12累子/π、)とし7、幅/
配列ピッチ(以下a / b )を0.3から0.85
までの間で0.05間隔tこして前記幅aのサーマルヘ
ッドを試作しで熱転写記録の冥馴を行った。本実験(/
(用いた熱転写シートは厚さ12μmのコンテンザ紙上
にワックスおよび顔料を主成分とする熱ff1融インク
を5μm厚みに塗布したものである。
In this way, in the thermal head in the head formation 7, the target array hit b = 125 μ mouth 1 (cord density 8 fangs/self),
83 μrn (ziton density 12 digits/π,) and 7, width/
Array pitch (hereinafter a/b) from 0.3 to 0.85
A thermal head having the above-mentioned width a was made as a prototype with a spacing of 0.05 t between the two, and a trial run of thermal transfer recording was performed. This experiment (/
(The thermal transfer sheet used was a 12 μm thick Contenza paper coated with a 5 μm thick thermal ff1 melting ink containing wax and pigment as main components.

次に第2図は本発明の熱転写記録装置の一実施例を示す
模式図で、熱転写シート5と普通紙6を搬送でき、サー
マルヘッド7上で該熱転写シート5と普通紙6とを重ね
合せらn、る装置であシ、記録はサーマルヘッド7に供
給するエネルギーを制御して行う。このようにして記録
を行った結果、前記サーマルヘッド7の素子密度、素子
寸法によって、該サーマルヘッド7に供給するエネルギ
ーは異なるが、記録ドツト寸法が発熱抵抗素子寸法とほ
ぼ回等になった時転写不良が激減し、また該記録ドツト
寸法は前H1−1サーマルヘッド7に供給するエネルギ
ーが大きくなるに従って大きくなった。
Next, FIG. 2 is a schematic diagram showing an embodiment of the thermal transfer recording device of the present invention, in which a thermal transfer sheet 5 and plain paper 6 can be conveyed, and the thermal transfer sheet 5 and plain paper 6 are superimposed on a thermal head 7. Recording is carried out by controlling the energy supplied to the thermal head 7 using the same device. As a result of recording in this manner, the energy supplied to the thermal head 7 varies depending on the element density and element dimensions of the thermal head 7, but when the recording dot size is approximately equal to the heating resistor element size, Transfer defects were drastically reduced, and the recording dot size increased as the energy supplied to the front H1-1 thermal head 7 increased.

し、かしながら前記a / bが0.3以下の時には前
記記録ドツト寸法は発熱抵抗素子ピッチb−1で大きく
することができす、記録ドツト間に普通紙6の白い地肌
部が残って文字等の了解度が低くなり望しくないことが
わかった。また同時に多数個の発熱抵抗素子2(第1図
に図示)に電力を供給した場合と弧立し7に1個の前記
発熱抵抗索子2に電力を供給した場合とでは、同一エネ
ルギーでも記録ドツト寸法が約10%程度は変化してし
まい、さらに前記a / bが0.88崖になると、サ
ーマルヘッドに供給するエネルギーを記録パターンによ
って制御し7なけ扛ばならない必要性が生じてくること
がわかった。従って発熱抵抗1<−7−は前記a / 
bが0.35以上075以下の寸法であれt:r記録パ
ターンによるエネルギー制省ijを行わずに多値記録が
でき、例えばa / bが035なら記録パターンによ
る記録ドツト寸法の誤差10チを見込んでも、記録ドツ
ト寸法が0.35,0.55.0175,1.0の4種
類の区別が5丁能であり、’!” 記a / l)が0
.75なら記録ドツト寸法が0.75,1.0の2種類
の区別ができる。すなわち前者では5イ16記釘が可能
で後者でけ3値記録が可能である。また前記a / b
が0,75のサーマルヘッドを1史用し1、イエロー、
マゼンタ、シアンの3色の熱転写シートを用い、3×3
のマトリックスによるドツトパターン法でカラー記録を
行ったところ、5832色が着駅でき、より自然に近い
良好なカラー記録が得られた。
However, when the a/b is 0.3 or less, the recording dot size can be increased by the heating resistor element pitch b-1, and the white background part of the plain paper 6 remains between the recording dots. It was found that the intelligibility of characters, etc. decreased, which was not desirable. Furthermore, the same energy can be recorded when power is supplied to a large number of heat generating resistor elements 2 (shown in FIG. 1) at the same time and when power is supplied to one heat generating resistor element 2 in the vertical position 7. When the dot size changes by about 10% and the a/b ratio reaches a cliff of 0.88, it becomes necessary to control the energy supplied to the thermal head according to the recording pattern. I understand. Therefore, the heating resistance 1<-7- is the above a/
If b is 0.35 or more and 075 or less, multi-value recording can be performed without energy saving using the t:r recording pattern.For example, if a/b is 035, the error in the recording dot size due to the recording pattern can be reduced by 10 inches. Even with this in mind, there are 5 different recording dot sizes: 0.35, 0.55.0175, and 1.0. ” A / l) is 0
.. 75, two types of recording dot sizes, 0.75 and 1.0, can be distinguished. That is, the former allows 5-16-bit recording, and the latter allows 3-value recording. Also, the above a/b
A thermal head with a value of 0.75 was used for 1 time, yellow,
3x3 using thermal transfer sheets in three colors, magenta and cyan.
When color recording was performed using the dot pattern method using the matrix, 5,832 colors were recorded, resulting in good color recording that was closer to natural color.

以上の説明により明らかなように本発明の熱転写記録P
8散には、サーマルヘッドの条件の設定に工夫を加えて
実験を行った結果、極と)ですぐれた中間調記録ができ
るという効果がある。
As is clear from the above explanation, the thermal transfer recording P of the present invention
As a result of experimenting with the setting of thermal head conditions, the 8-dispersion has the effect of being able to record excellent halftones at poles and ).

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

第1図は本発すL!の熱転写記録製置のサーマルへ、ラ
ドの一′3−!:施例を示す断面図および第2図は本発
明の熱転写記録製置と4′の一実施例を示す模式図であ
る。 倣1において、l・・・・・・基鈑、2・・・・・・発
熱抵抗素子、3・・・・・・mM摩耗層、5・旧・・熱
転写シート、6・・・・・・普通+++;、7・・・・
・・サーマルヘッド、計重・・プラテンローラー。 代j′11人 ヲげ[1士 内 原 晋第71 凹 (
Figure 1 shows the main issue of L! To the thermal of the thermal transfer recording equipment, RAD's 1'3-! : A sectional view showing an embodiment, and FIG. 2 is a schematic diagram showing an embodiment of the thermal transfer recording device 4' of the present invention. In copying 1, 1... base plate, 2... heat generating resistor element, 3... mm wear layer, 5... old thermal transfer sheet, 6...・Normal+++;, 7・・・・
・Thermal head, weighing device, platen roller. 11 people woge [1 person Uchihara Susumu 71 concave (

Claims (1)

【特許請求の範囲】[Claims] 複数の発熱抵抗素子を一列に配列してなるサーマルヘッ
ドとプラテンローラーとの間に熱転写シートと普通紙と
を重ね合わせ搬送する枦構を備える熱転写記録装置にお
いて、前記サーマルヘッドの発熱抵抗素子の幅を該発熱
抵抗素子の配列ピッチの0.35倍以上0.75倍以下
の大きさに設定することを特徴とする熱転写記録装置。
In a thermal transfer recording device having a structure in which a thermal transfer sheet and plain paper are stacked and conveyed between a thermal head having a plurality of heat generating resistive elements arranged in a line and a platen roller, the width of the heat generating resistive elements of the thermal head is A thermal transfer recording device characterized in that: is set to a size of 0.35 to 0.75 times the arrangement pitch of the heat generating resistive elements.
JP10867183A 1983-06-17 1983-06-17 Thermal transfer recording apparatus Pending JPS60977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10867183A JPS60977A (en) 1983-06-17 1983-06-17 Thermal transfer recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10867183A JPS60977A (en) 1983-06-17 1983-06-17 Thermal transfer recording apparatus

Publications (1)

Publication Number Publication Date
JPS60977A true JPS60977A (en) 1985-01-07

Family

ID=14490722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10867183A Pending JPS60977A (en) 1983-06-17 1983-06-17 Thermal transfer recording apparatus

Country Status (1)

Country Link
JP (1) JPS60977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5006870A (en) * 1987-09-30 1991-04-09 Kabushiki Kaisha Toshiba Thermal recording head
EP0500333A2 (en) * 1991-02-21 1992-08-26 Riso Kagaku Corporation Thermal stencil master plate and method for processing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5006870A (en) * 1987-09-30 1991-04-09 Kabushiki Kaisha Toshiba Thermal recording head
EP0500333A2 (en) * 1991-02-21 1992-08-26 Riso Kagaku Corporation Thermal stencil master plate and method for processing the same
US5522313A (en) * 1991-02-21 1996-06-04 Riso Kagaku Corporation Thermal stencil master plate and method for processing the same
EP0500333B1 (en) * 1991-02-21 1997-05-14 Riso Kagaku Corporation Thermal stencil master plate and method for processing the same

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