JPS63303767A - Thermal head for graphic printer - Google Patents
Thermal head for graphic printerInfo
- Publication number
- JPS63303767A JPS63303767A JP13948787A JP13948787A JPS63303767A JP S63303767 A JPS63303767 A JP S63303767A JP 13948787 A JP13948787 A JP 13948787A JP 13948787 A JP13948787 A JP 13948787A JP S63303767 A JPS63303767 A JP S63303767A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- thermal head
- area
- electrode
- 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
Links
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 239000007787 solid Substances 0.000 abstract description 7
- 239000000919 ceramic Substances 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters 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
- B41J2/32—Typewriters 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
- B41J2/345—Typewriters 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 characterised by the arrangement of resistors or conductors
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、熱エネルギを与えることにより印字を行うシ
リアル型プリンタにおける印字ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a print head in a serial printer that performs printing by applying thermal energy.
一般に、感熱転写記録方式は、第６図に示すように、記
録画像情報に応じて選択的に発熱する発熱抵抗体を内部
に有するサーマルヘッド１と、該サーマルヘッド１１に
圧接して配置され、外周面にシリコーンゴム等の弾性体
を被覆したバックロール２とから構成される記録部３と
を備え、この記録部３へ普通紙等の記録シート４と、−
面に感熱インク層が形成されたインクドナーシート５と
を重ね合わせてローラ６．７により給送し、前記サーマ
ルヘッド１によりインクドナーシート５の感熱インク層
を選択的に融解若しくは昇華させ、これを記録シート４
上に転写させて感熱記録を行う方式である。上記サーマ
ルヘッド１は、通常、絶縁性基板上に薄膜ないし厚膜技
術により一対の電橿を形成すると共に、両電橿間に発熱
抵抗体を接続して構成され、両電極間の発熱抵抗体に電
力を印加して発熱抵抗体をジュール熱により発熱させて
いる。In general, the thermal transfer recording method includes, as shown in FIG. 6, a thermal head 1 having a heating resistor therein that selectively generates heat according to recorded image information, and a thermal head 11 disposed in pressure contact with the thermal head 11. It is equipped with a recording section 3 consisting of a back roll 2 whose outer peripheral surface is coated with an elastic material such as silicone rubber, and a recording sheet 4 such as plain paper is transferred to the recording section 3.
The ink donor sheet 5 having a heat-sensitive ink layer formed on its surface is superimposed and fed by a roller 6.7, and the thermal head 1 selectively melts or sublimates the heat-sensitive ink layer of the ink donor sheet 5. Record sheet 4
This method performs thermal recording by transferring the image onto the surface. The thermal head 1 is usually constructed by forming a pair of electric rods on an insulating substrate using thin film or thick film technology, and connecting a heating resistor between both electrodes. Electric power is applied to the heating resistor to generate heat using Joule heat.
第５図は従来のグラフィックプリンタ用のサーマルヘッ
ドｌを示し、発熱抵抗体ｌＯを直線状に密に配列し、グ
ラフィック等において黒ベタ印字を行う場合には、全て
の発熱抵抗体ｌＯを発熱させて印字を行っている。Figure 5 shows a conventional thermal head l for a graphic printer, in which heat generating resistors lO are arranged densely in a straight line, and when printing solid black on graphics etc., all the heat generating resistors lO are made to generate heat. is printing.
しかしながら、上記従来のグラフインクプリンタ用サー
マルヘッドにおいてグラフインク等において黒ベタ印字
を行う際に、用紙が送りムラにより発熱部を越えて送ら
れたときに、第４図に示すように、ｎ行の印字エリアと
ｆｉ＋１行の印字エリアとの間に、印字のムラが白いス
ジ状Ａになって現れ、画質を損なうという問題を有して
いる。However, when performing solid black printing with graph ink, etc. using the conventional thermal head for graph ink printers, when the paper is sent beyond the heat generating part due to uneven feeding, n lines are printed as shown in FIG. There is a problem in that uneven printing appears in the form of a white stripe A between the printing area of the fi+1 line and the printing area of the fi+1 line, impairing the image quality.
本発明は上記した問題を解決するものであって、用紙の
送りムラが生じても鮮明な画像を維持することができる
グラフィックプリンタ用サーマルヘッドを従供すること
を目的とする。SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a thermal head for a graphic printer that can maintain a clear image even if uneven paper feeding occurs.
そのために本発明のグラフインクプリンタ用サーマルヘ
ッドは、熱エネルギを与えることにより印字を行うシリ
アル型プリンタにおける印字ヘッドにおいて、発熱部の
両端の面積を他の発熱部よりも大にしたことを特徴とす
るものである。To this end, the thermal head for graph ink printers of the present invention is characterized in that, in a print head for a serial printer that prints by applying thermal energy, the area at both ends of the heat generating part is made larger than the other heat generating parts. It is something to do.
本発明においては、例えば第３図に示すように、グラフ
ィック等において黒ベタ印字を行うと、ｎ行の印字エリ
アとｎ＋１行の印字エリアとが重なるために、用紙の送
りムラにより過度に用紙が送られても、発熱部がオーバ
ーラツプすることにより、白スジ状の印字抜けを防止す
ることができる。In the present invention, as shown in FIG. 3, for example, when solid black printing is performed on graphics, etc., the printing area of line n and the printing area of line n+1 overlap, resulting in uneven paper feeding. Even when the paper is fed, the heating parts overlap, which prevents missing prints in the form of white stripes.
以下本発明の実施例を図面を参照しつつ説明する。第１
図は本発明のグラフインクプリンタ用サーマルヘッドの
１実施例を示す平面図、第２図はその断面図、第３図は
本発明の詳細な説明するための図である。Embodiments of the present invention will be described below with reference to the drawings. 1st
1 is a plan view showing one embodiment of a thermal head for a graph ink printer according to the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a diagram for explaining the present invention in detail.
図中、ｌＯはサーマルヘッド、１１はセラミック基材、
１２は共通電極、１３は個別電極、１４は厚膜型発熱体
、１５は保護膜を示す。In the figure, IO is a thermal head, 11 is a ceramic base material,
12 is a common electrode, 13 is an individual electrode, 14 is a thick film heating element, and 15 is a protective film.
第１図において、サーマルへラド１０は、セラミック基
材１１上に共通電極１２および個別電極１３が形成され
、これら共通電極１２と個別電極１３間には、厚膜型発
熱体１４が印刷され、さらに全体を保護膜１５が被覆さ
れている。前記個別電極１２の両端の電極の面積は、他
の電極の面積の約２倍程度になるように形成されている
。In FIG. 1, the thermal helad 10 includes a common electrode 12 and individual electrodes 13 formed on a ceramic base material 11, and a thick film heating element 14 printed between the common electrode 12 and the individual electrodes 13. Furthermore, a protective film 15 covers the entire surface. The areas of the electrodes at both ends of the individual electrodes 12 are approximately twice as large as the areas of the other electrodes.
上記サーマルへラドｌＯを使用して、グラフィック等に
おいて黒ベタ印字を行うと、第３図に示すように、ｎ行
の印字エリアとｆｉ＋１行の印字エリアとが重なるため
に、用紙の送りムラにより過度に用紙が送られても、両
端の発熱部Ｂがオーバーラツプすることにより、白スジ
状の印字抜けを防止することができる。When using the thermal RADIO described above to perform solid black printing on graphics, etc., as shown in Figure 3, the printing area of the n line and the printing area of the fi+1 line overlap, resulting in uneven paper feeding. Even if the paper is fed excessively, the heating portions B at both ends overlap, thereby preventing missing prints in the form of white stripes.
以上説明したように本発明においては、発熱部の両端の
面積を他の発熱部よりも大にすることにより、ベタ印字
の際に用紙の送りムラに起因する白スジの発生を防止す
ることができ、鮮明な画質を得ることができる。As explained above, in the present invention, by making the area at both ends of the heat generating part larger than the other heat generating parts, it is possible to prevent the occurrence of white streaks caused by uneven paper feeding during solid printing. It is possible to obtain clear image quality.
第１図は本発明のグラフインクプリンタ用サーマルヘッ
ドの１実施例を示す平面図、第２図はその断面図、第３
図は本発明の詳細な説明するための図、＠４図は従来の
問題点を説明するための図、第５図は従来のグラフイン
クプリンタ用サーマルヘッドの１例を示す図、第６図は
感熱転写記録方式を説明するための概略図である。
ｌＯ・・・サーマルヘッド、ｌｌ・・・セラミック基材
、１２・・・共通電極、１３・・・個別電極、１４・・
・厚膜型発熱体、１５・・・保護膜、Ｂ・・・発熱部。
出 願 人 富士ゼロックス株式会社代理人弁理士
白 井 博 樹（外２名）第１図
第３図
第４図FIG. 1 is a plan view showing one embodiment of a thermal head for a graph ink printer of the present invention, FIG. 2 is a sectional view thereof, and FIG.
Figure 4 is a diagram for explaining the present invention in detail, Figure 4 is a diagram for explaining the conventional problems, Figure 5 is a diagram showing an example of a conventional thermal head for a graph ink printer, and Figure 6 is a diagram for explaining the present invention in detail. FIG. 1 is a schematic diagram for explaining a thermal transfer recording method. lO...Thermal head, Il...Ceramic base material, 12...Common electrode, 13...Individual electrode, 14...
- Thick film heating element, 15...protective film, B...heat generating part. Applicant Fuji Xerox Co., Ltd. Representative Patent Attorney Hiroki Shirai (2 others) Figure 1 Figure 3 Figure 4
Claims (1)
ル型プリンタにおける印字ヘッドにおいて、発熱部の両
端の面積を他の発熱部よりも大にしたことを特徴とする
グラフィックプリンタ用サーマルヘッド。(1) A thermal head for a graphic printer, characterized in that, in a print head for a serial printer that prints by applying thermal energy, the area at both ends of the heat generating part is larger than that of other heat generating parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13948787A JPS63303767A (en) | 1987-06-03 | 1987-06-03 | Thermal head for graphic printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13948787A JPS63303767A (en) | 1987-06-03 | 1987-06-03 | Thermal head for graphic printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63303767A true JPS63303767A (en) | 1988-12-12 |
Family
ID=15246398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13948787A Pending JPS63303767A (en) | 1987-06-03 | 1987-06-03 | Thermal head for graphic printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63303767A (en) |
-
1987
- 1987-06-03 JP JP13948787A patent/JPS63303767A/en active Pending
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