JPH01146782A - Ink film cassette - Google Patents

Ink film cassette

Info

Publication number
JPH01146782A
JPH01146782A JP30670887A JP30670887A JPH01146782A JP H01146782 A JPH01146782 A JP H01146782A JP 30670887 A JP30670887 A JP 30670887A JP 30670887 A JP30670887 A JP 30670887A JP H01146782 A JPH01146782 A JP H01146782A
Authority
JP
Japan
Prior art keywords
ink film
ink
film cassette
guide part
insulating material
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
JP30670887A
Other languages
Japanese (ja)
Inventor
Kiyoto Komuro
清人 小室
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP30670887A priority Critical patent/JPH01146782A/en
Publication of JPH01146782A publication Critical patent/JPH01146782A/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
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

PURPOSE:To obtain a printing with high resolving power and satisfactory reproducibility in an electrothermo-transfer system printer and to make a device small as a whole even in a general thermal transfer printer, by a method wherein, a guide part for correcting the path of an ink film is provided, and the guide part is made of an electricity insulating material. CONSTITUTION:When an ink film 2 is set to an ink film cassette 1, a film path is corrected by a guide part 1-a so as to be constant through a head 4, film presser rollers 5, and a platen 6. When the ink film cassette 1 is made of a material other than an electricity insulating material, in an electrothermo- transfer system printer the installation of the guide part 1-a increases an ink melting amount on the electrode side having a large electric potential difference from a frame GND, thus resulting in a resolving power on an image plane that is not the same but lowers to 1/2 times an electrode pitch. Therefore, by using an insulating material such as a plastic as the ink film cassette 1, an image quality with high resolving power and stable reproducibility is made available.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱転写プリンタのインクフィルムカセットに
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ink film cassette for a thermal transfer printer.

〔従来の技術〕[Conventional technology]

従来のインクフィルムカセットの材質は、通電型以外の
熱転写プリンタにおいてはインクフィルムの基材がイン
クフィルムカセット上に設けたインクフィルムの経路を
矯正するガイドと接触しても印画画質に悪彩りを及ぼさ
ない為、絶縁物にする必要がな(自由に選択できた。
The material of conventional ink film cassettes is insulating, because in non-current type thermal transfer printers, even if the ink film base material comes into contact with the guide provided on the ink film cassette to correct the ink film path, the printed image quality will not be affected. There was no need to turn it into a thing (I was free to choose).

また、前記ガイドを設けていないタイプのインクフィル
ムカセットを用いた熱転写プリンタは装置全体が大きく
なってしまいコンパクト化の妨げとなっていた。
Further, in a thermal transfer printer using an ink film cassette without the guide, the overall size of the device becomes large, which hinders miniaturization.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、前述の従来技術を通電熱転写方式に転用しよう
とするとインクフィルムカセットが絶縁体でない場合に
は以下の様な問題点を存する。
However, when attempting to apply the above-mentioned conventional technique to an electric thermal transfer method, the following problems arise if the ink film cassette is not an insulator.

第一にインクフィルムカセットがフレームGND l!
: 導通している場合には、記録ヘッドのプラス側の電
極と、マイナス側の電極に発生するジュール熱に差が生
じ、フレームGNDとの電位差の大きい方のmtiで形
成されるドツト面積の方が大きくなって電極1つおきに
縦スジが発生して分解能の低下すな・わち**低下を招
く。
First, the ink film cassette is frame GND l!
: When conductive, there is a difference in the Joule heat generated between the positive side electrode and the negative side electrode of the recording head, and the dot area formed by mti with the larger potential difference with frame GND is larger. becomes larger, and vertical streaks occur on every other electrode, leading to a decrease in resolution.

次にインクフィルム抵抗層の抵抗値を検出して抵抗値に
相応した電圧または印゛加パルスを電極に加えて画質の
再現性を得る様な処理を行う際に、抵抗層がインクフィ
ルム?ガイ、ドに接触しでいる状態によって抵抗値にバ
ラツキが生じ安定した画質再現性を得ることが難しくな
る。
Next, when the resistance value of the ink film resistance layer is detected and a voltage or applied pulse corresponding to the resistance value is applied to the electrode to obtain reproducibility of image quality, it is necessary to detect whether the resistance layer is the ink film or not. The resistance value varies depending on the state of contact with the guide and the dome, making it difficult to obtain stable image quality reproducibility.

また、通電熱転写方式に限らずインクフィルムカセット
にインクフィルムガイドを設けない場合にはレイアウト
上装置全体が大きくなるという問題点を仔する。
In addition, not only the electric thermal transfer method but also the case where the ink film cassette is not provided with an ink film guide has the problem that the overall size of the apparatus increases due to the layout.

そこで本発明はこのような問題点を解決するもので、そ
の目的とするところは、通電熱転写方式のプリンタにお
いては分解能が高く再現性の良好な印画を得られ、一般
熱転写プリンタにおいてもIff全体をコンパクト化す
ることのできるインクフィルムカセットを提供するとこ
ろにある。
The present invention is intended to solve these problems, and its purpose is to obtain prints with high resolution and good reproducibility in electrical thermal transfer printers, and to reduce the overall Iff in general thermal transfer printers. To provide an ink film cassette that can be made compact.

(問題点を解決するための手段〕 本発明のインクフィルムカセットは、熱転写方式で記録
を行うインクフィルムを収納するインクフィル1ムカー
セツトにおいて、前記インクフィルムの経路を矯正する
ガイド部分を存し、前記ガイド部゛分の材質を絶縁物と
したことを特徴とする。
(Means for Solving the Problems) The ink film cassette of the present invention includes a guide portion for correcting the path of the ink film in an ink film cassette that stores an ink film for recording by a thermal transfer method, and the guide portion The material is an insulator.

(実施例〕 第1図は本発明の実施例を示□す概略図であって1はイ
ンクフィルムカセットでありフィルムコア3に巻回され
たインクフィルム2がHHされている。イン、クフィノ
ーム2をHffすると、ガイド部分1−aによってフィ
ルム経路が矯正される。
(Example) Fig. 1 is a schematic diagram showing an example of the present invention, in which 1 is an ink film cassette, and an ink film 2 wound around a film core 3 is HH. Then, the film path is corrected by the guide portion 1-a.

第2図は熱転写プリンタインク転写廻り概略図であって
カセツ、ト脱着可能状態を示している。第2図(a)は
インクフィルムカセット1にガイド部分1−aを設けて
ない場合であり第2図(b)はガイド部分1−aを設け
た場合である。インフッ、イルムは図の矢印方向に巻回
される為、ヘッド4とフィルム押工ローラ5をプラテン
6からレリーズした状態においては、図の2点鎖線の範
囲で経路が変化する。しかし第2図−(b)に示す様に
ガイド部分1−8Lを設けることによっ−て、ヘッド4
、フィルム押工ローラ5とプラテン6との間でフィルム
経゛路は一定とすることができる。以上の理由によって
インク”フィルムカセット1を脱着する際のヘッド4及
びフィ“ルム押エローラ5のレリーズ量を小さくするこ
・どができ゛る′為装置全体のコンバク”ト化を実現で
きる。 “  ・カイト部分1−aを設けることによっ
て通電熱転写方式プリンタの場合には以下問題点を存す
る。 ′      ゛ 第°3図は基板8の一方に抵抗層7と他方側にインク層
9を設けたインクフィルム2の抵抗層7が電気的に浮い
ている場合のインク溶融量を示した図であり第4図はイ
ンクフィルム2の抵抗層7が7ンームGNDと4通して
いる場合のインク溶融量を示した図である。インクフィ
ルムカセットlが絶縁物でできていない場合は第4図に
示す如くフレームGNDどの電位燈の大きい電極例のイ
ンク溶融量が大きぐなり画面の分解能は電極ピッチとな
らずにその2分の1となってしまう。この問題点は、イ
ンクフィルムカセット1の材質をプラスチック等の絶縁
物とすることによって解決できる。
FIG. 2 is a schematic view of the ink transfer system of the thermal transfer printer, showing a state in which the cassette and torsion are detachable. FIG. 2(a) shows the case where the ink film cassette 1 is not provided with the guide portion 1-a, and FIG. 2(b) shows the case where the guide portion 1-a is provided. Since the film and film are wound in the direction of the arrow in the figure, when the head 4 and film pressing roller 5 are released from the platen 6, the path changes within the range indicated by the two-dot chain line in the figure. However, by providing the guide portion 1-8L as shown in FIG. 2-(b), the head 4
, the film path can be made constant between the film pressing roller 5 and the platen 6. For the above reasons, it is possible to reduce the amount of release of the head 4 and film pushing roller 5 when attaching and detaching the ink film cassette 1, thereby realizing a compact design of the entire apparatus. Due to the provision of the kite portion 1-a, the following problems arise in the case of an energized thermal transfer type printer. ' Figure 3 shows the amount of ink melted when the resistive layer 7 of the ink film 2, which has the resistive layer 7 on one side of the substrate 8 and the ink layer 9 on the other side, is electrically floating. FIG. 4 is a diagram showing the amount of ink melted when the resistance layer 7 of the ink film 2 is connected to the 7 nm GND four times. If the ink film cassette l is not made of an insulating material, as shown in Figure 4, the amount of ink melted by the large electrode of the frame GND and which potential light will be large, and the resolution of the screen will not be the same as the electrode pitch, but will be half of that. It becomes. This problem can be solved by using an insulating material such as plastic as the material of the ink film cassette 1.

次に抵抗層7の抵抗値を検出して抵抗値に相応した電圧
または印加パルスをヘッド電極10に加えて画質再現性
を得る抵抗値フィードバック処理を行う際に抵抗層7が
フレームGNDに4通したインクフィルムカセット1と
接触している場合には・フィルムコアによっ・て接触抵
抗が変化する為正確な抵抗値測定が不可能となり、安定
した画質再現性の妨げとなる。この内もインクフィルム
カセット1の材質にプラスチック等の絶縁物を用いるこ
とが対策な手段となる。
Next, when the resistance value of the resistance layer 7 is detected and a voltage or applied pulse corresponding to the resistance value is applied to the head electrode 10 to obtain the image quality reproducibility, the resistance layer 7 is connected to the frame GND four times. When the film is in contact with the ink film cassette 1, the contact resistance changes depending on the film core, making it impossible to accurately measure the resistance value and hindering stable image quality reproducibility. Among these, a countermeasure is to use an insulating material such as plastic for the material of the ink film cassette 1.

〔発明の効果〕 以上述べた様に本発明によれば、インクフィルムカセッ
トにインクフィルムを矯正する為のガイド部分を設け、
インクフィルムカセットの材質を絶縁物にすることによ
って、装置全体をコンパクト化することができ、さらに
通電熱転写方式プリンタにおいては、分解能が高く、安
定した再現性の画質を得ることができる。
[Effects of the Invention] As described above, according to the present invention, the ink film cassette is provided with a guide portion for straightening the ink film,
By using an insulating material for the ink film cassette, the entire device can be made more compact, and furthermore, in an electric thermal transfer printer, image quality with high resolution and stable reproducibility can be obtained.

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

第1図はインクフィルムカセットの概略図。 第2図(a)(b)はインクフィルム脱行伏態の転写侶
り概略図。 第3図(a)(b)は抵抗層が電気的に浮いている時の
インク溶融量を示す図。 第4図(a)(b)は抵抗層がGND、!:a通してい
る時のインク溶FjA ffiを示す図。 1・・・インクフィルムカセット 1−a・・・ガイド部分 2・・インクフィルム 3 ・フィルムコア 4 ・ヘッド 5・・・フィルム押工ローラ 6・・・プラテン 以  上 出願人 セイコーエプソン株式会社 第2図 第3図 等4図
FIG. 1 is a schematic diagram of an ink film cassette. FIGS. 2(a) and 2(b) are schematic diagrams of the transfer process of the ink film in a state of withdrawal. FIGS. 3(a) and 3(b) are diagrams showing the amount of ink melted when the resistance layer is electrically floating. In FIGS. 4(a) and 4(b), the resistance layer is connected to GND, ! : A diagram showing ink dissolution FjA ffi when passing through a. 1... Ink film cassette 1-a... Guide portion 2... Ink film 3 - Film core 4 - Head 5... Film pressing roller 6... Platen and above Applicant Seiko Epson Corporation Figure 2 3 figures etc. 4 figures

Claims (3)

【特許請求の範囲】[Claims] (1)熱転写方式で記録を行うインクフィルムを収納す
るインクフィルムカセットにおいて、前記インクフィル
ムのガイド部分を有することを特徴とするインクフィル
ムカセット。
(1) An ink film cassette for storing an ink film for recording using a thermal transfer method, characterized in that the ink film cassette has a guide portion for the ink film.
(2)前記ガイド部分の材質を絶縁物としたことを特徴
とする特許請求の範囲第1項記載のインクフィルムカセ
ット。
(2) The ink film cassette according to claim 1, wherein the guide portion is made of an insulating material.
(3)前記インクフィルムが通電層を有することを特徴
とする特許請求の範囲第1項記載のインクフィルムカセ
ット。
(3) The ink film cassette according to claim 1, wherein the ink film has a current-conducting layer.
JP30670887A 1987-12-03 1987-12-03 Ink film cassette Pending JPH01146782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30670887A JPH01146782A (en) 1987-12-03 1987-12-03 Ink film cassette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30670887A JPH01146782A (en) 1987-12-03 1987-12-03 Ink film cassette

Publications (1)

Publication Number Publication Date
JPH01146782A true JPH01146782A (en) 1989-06-08

Family

ID=17960350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30670887A Pending JPH01146782A (en) 1987-12-03 1987-12-03 Ink film cassette

Country Status (1)

Country Link
JP (1) JPH01146782A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5705871A (en) * 1995-12-28 1998-01-06 Minebea Co., Ltd. Pulse generator having index angles formed by permanent magnet rotor
US5769547A (en) * 1995-08-18 1998-06-23 Max Co., Ltd. Thermal printer with pad for cleaning transfer sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769547A (en) * 1995-08-18 1998-06-23 Max Co., Ltd. Thermal printer with pad for cleaning transfer sheet
US5705871A (en) * 1995-12-28 1998-01-06 Minebea Co., Ltd. Pulse generator having index angles formed by permanent magnet rotor

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