JPS61123550A - Thermal head controlling system - Google Patents
Thermal head controlling systemInfo
- Publication number
- JPS61123550A JPS61123550A JP23606284A JP23606284A JPS61123550A JP S61123550 A JPS61123550 A JP S61123550A JP 23606284 A JP23606284 A JP 23606284A JP 23606284 A JP23606284 A JP 23606284A JP S61123550 A JPS61123550 A JP S61123550A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- pulse
- preheating
- thermal head
- current passing
- 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
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
- B41J2/38—Preheating, i.e. heating to a temperature insufficient to cause printing
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野）
本発明はシリアルサーマルプリンタのサーマルヘッド制
御方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal head control system for a serial thermal printer.
近年、パーソナルコンピータ、ワードプロセッサ等のプ
リンタとして印字機構が簡単で、低騒音のサーマルプリ
ンタが広く使用されている。In recent years, thermal printers with simple printing mechanisms and low noise have been widely used as printers for personal computers, word processors, and the like.
このサーマルプリンタには、印字文字ドツトパターンの
縦方向のドツトに対応して複数の発熱素子を有するサー
マルヘッドを一定速度でスペース移動しながら、印字部
分の発熱素子（抵抗体）を加熱し、その熱により用紙を
変色させる感熱式あるいはその熱によりリボンのインク
を溶融して用紙に熱転写するものがある。This thermal printer heats the heating elements (resistors) in the printing area by moving a thermal head, which has multiple heating elements in space at a constant speed, in correspondence with the vertical dots of the printed character dot pattern. There is a thermal type that changes the color of the paper using heat, or a type that uses the heat to melt the ink on a ribbon and thermally transfer it to the paper.
サーマルプリンタの印字速度はサーマルへ・ノドの熱応
答速度に依存し、該時間より速い送り速度の場合はドツ
ト間の相互熱干渉のため、にじみのある印字文字となる
。従って、サーマルプリンタは比較的印字速度が遅い傾
向にあり、そのため上記相互干渉を排除するサーマルヘ
ッド制御方式が要望されている。The printing speed of a thermal printer depends on the thermal response speed of the thermal gutter, and if the feeding speed is faster than this time, the printed characters will be blurred due to mutual thermal interference between the dots. Therefore, thermal printers tend to have relatively slow printing speeds, and therefore there is a need for a thermal head control system that eliminates the above-mentioned mutual interference.
従来の技術を以下説明する。 The conventional technology will be explained below.
第２図（ａｌは熱転写型サーマルプリンタのヘッド部分
の概略図、第２図［ｂ）はサーマルヘッドの詳細図、１
第２図（Ｃ）はサーマルヘッド制御方式を説明するタイ
ムチャートである。Figure 2 (al is a schematic diagram of the head part of a thermal transfer type thermal printer, Figure 2 [b) is a detailed diagram of the thermal head, 1
FIG. 2(C) is a time chart explaining the thermal head control method.
第２図（ａ）においてｌはプラテン、２はヘッド。In FIG. 2(a), l is a platen and 2 is a head.
３はリボンカセット、４はサーマルヘッド、５はリボン
である。3 is a ribbon cassette, 4 is a thermal head, and 5 is a ribbon.
このヘッド２およびリボンカセット３の部分は一定の印
字速度でプラテン１に対して平行に移動し、ドツト印字
位置でサーマルヘッド４を加熱し。The head 2 and ribbon cassette 3 move parallel to the platen 1 at a constant printing speed, and heat the thermal head 4 at the dot printing position.
リボン５に塗布されているインクをプラテン１上のプリ
ンタ用紙に圧着、熱転写する。The ink applied to the ribbon 5 is pressed onto the printer paper on the platen 1 and thermally transferred.
第２図（ｂ）はサーマルヘッド４の詳細を示したもので
、絶縁体７に複数の発熱素子（抵抗体） ８が蒸着され
ており１選択信号ｌＯによりスイッチング素子９がオン
となって電源Ｅより電流が流れ。FIG. 2(b) shows details of the thermal head 4, in which a plurality of heating elements (resistors) 8 are deposited on an insulator 7, and the switching element 9 is turned on by the 1 selection signal 1O, and the power is supplied. Current flows from E.
発熱する。発熱素子８は印字文字の縦構成ドツト分準備
され、走査方向に対して直角のライン同時に選択加熱さ
れドツト印字する。I get a fever. The heating elements 8 are prepared for the vertical dots of the printed characters, and are simultaneously selectively heated in lines perpendicular to the scanning direction to print dots.
第２図（Ｃ１はサーマルヘッド４の各発熱素子８の通電
時間を表すタイムチャートであって、ｐは該印字周期に
おいて印字しない発熱素子を予熱する予熱通電パルス（
パルス幅ｔｐ）、ｓは前印字周期に該発熱素子が印字せ
ず該印字周期で印字する場合に印可する単発印字通電パ
ルス（パルス幅（ｓ）、ｃは連続的に印字する場合に印
可する連続通電パルス（パルス幅ｔｃ）である。即ち第
２図（Ｃ）において。FIG. 2 (C1 is a time chart showing the energization time of each heating element 8 of the thermal head 4, p is a preheating energization pulse (
Pulse width tp), s is a single printing energization pulse (pulse width (s), c is applied when printing continuously) when the heating element does not print in the previous printing cycle and prints in this printing cycle It is a continuous energization pulse (pulse width tc), that is, in FIG. 2(C).
第２図（Ｃ１−＋１１は Ｏ＊○ −（２）は Ｏ・拳拳 −【３）は ・・００ 但し・は印字 ○は無印字 を印字するタイムチャートを表している。Figure 2 (C1-+11 is O*○ -(2) is O・Fist -[3] is...00 However, ・is printed ○ is unprinted It represents the time chart for printing.
また第２図（Ｃ） −（１）において、１００は熱転写
しきい値を、１０１は該発熱素子の熱応答を表じており
、各通電パルス幅はサーマルヘッドの温度が上記熱転写
しきい値の前後で且つドツト間干渉のない値に設定され
る。Furthermore, in FIG. 2(C)-(1), 100 represents the thermal transfer threshold, 101 represents the thermal response of the heating element, and each energization pulse width indicates that the temperature of the thermal head is above the thermal transfer threshold. It is set to a value before and after and without inter-dot interference.
以上の如く予熱通電により熱転写しきい値の近傍で熱平
衡を保ち、印字速度を向上させている。As described above, the preheating energization maintains thermal equilibrium near the thermal transfer threshold and improves printing speed.
従来例における予熱通電は第２図ｆｃ）のタイムチャー
トに示すように、すべての印字周期の先頭において予熱
通電時間ｔｐを設け、単発通電のときはｔｓ’、連続通
電のときはｔｃ’を付加する形式としている。このよう
な方式は印字情報に応じて各パルスを発生するのに便利
であるが、第２図（ｃｌ −（１１に示すように単発通
電パルスＳが印可された次の印字周期において予熱通電
パルスｐが印可される場合、該単発通電パルスＳの放熱
時間ｔｓＯが短く、従って続く予熱通電パルスｐによっ
て熱転写しきい値を越える（１０２の部分）可能性が生
じ、従ってにじみ等が発生し良質の印字特性が得られず
、印字速度を低下させる等の問題点があった。For preheating energization in the conventional example, as shown in the time chart in Fig. 2 fc), a preheating energization time tp is set at the beginning of every printing cycle, and ts' is added for single energization, and tc' is added for continuous energization. The format is as follows. Although such a method is convenient for generating each pulse according to printing information, as shown in FIG. When p is applied, the heat dissipation time tsO of the single energization pulse S is short, and therefore there is a possibility that the thermal transfer threshold value (part 102) is exceeded by the subsequent preheating energization pulse p, resulting in bleeding etc. There were problems such as poor printing characteristics and reduced printing speed.
上記説明したように、従来の予熱通電方式では印字ドツ
トの次の無印字部分ににじみ等で印字品質が劣化しやす
く、従って印字速度を向上し得ないという問題点があっ
た。As explained above, the conventional preheating energization method has the problem that the printing quality tends to deteriorate due to bleeding in the non-printed area following the printed dot, and therefore the printing speed cannot be improved.
上記従来の問題点は、一定速度に移動するサーマルヘッ
ドに同期した印字周期中に所定印字部分の発熱素子を加
熱する加熱手段と、上記印字部分を除く発熱素子を上記
印字周期中に予熱する予熱手段と、上記周期中における
予熱開始時刻を加熱開始時刻と同時またはそれ以降とす
る制御手段とを有する本発明のサーマルヘッドｌ制御方
式により解決することができる。The above-mentioned problems with the conventional method include heating means for heating heating elements in a predetermined printing area during a printing cycle synchronized with a thermal head that moves at a constant speed, and preheating for preheating heating elements other than the above-mentioned printing area during the printing cycle. This problem can be solved by the thermal head l control method of the present invention, which has a means for controlling the preheating start time during the above-mentioned period at the same time as or after the heating start time.
第１図（ｂｌは本発明の１実施例の通電タイムチャート
を示したもので、各通電パルスの印字周期における位置
として、各通電パルスの後縁を一致させている。このた
め第１図（ｂ） −（１１に示すように単発通電パルス
Ｓ後の放電時間ｔｓｏ’は第２図（Ｃ１のｔｓｏに比較
して大きく取れ、にじみ等の影響を防止し得る。また予
熱通電パルスｐの位置が相体的に後方にずれるため１次
に印字するとき単発通電パルスＳに近づいて〔第１図（
ｂ） −（１）のｔｐ。FIG. 1 (bl shows the energization time chart of one embodiment of the present invention, in which the trailing edge of each energization pulse is made to coincide with the position in the printing cycle of each energization pulse. For this reason, FIG. b) - (As shown in 11, the discharge time tso' after the single energization pulse S is larger than the tso in FIG. Because the pulse is relatively shifted backwards, it approaches the single energization pulse S during the primary printing [Fig. 1 (
b) - tp of (1).
“〕予熱効果が保持でき、そのため単発通電パルス幅ｔ
ｓを狭くできる効果を生じる。“] The preheating effect can be maintained, so the single energization pulse width t
This produces the effect of narrowing s.
このように各印字周期における予熱通電パルス位置を従
来に比較してｔｐｔ （第１図（ｂｌ −（３１）の
遅れを持たせることにより、にじみ等を防止でき。In this way, by comparing the preheating energization pulse position in each printing cycle with the conventional one and providing a delay of tpt (FIG. 1 (bl-(31)), bleeding etc. can be prevented.
従って印字速度を上昇し得る効果がある。Therefore, there is an effect that the printing speed can be increased.
なおｔｐｔは９時刻ｔｏを基準として ｔｐｔ″ｔｗ とすれば、にじみ防止の効果が大きい。Note that tpt is based on 9 time to. tpt″tw If so, the effect of preventing bleeding is great.
本発明の実施例を図を用いて説明する。 Embodiments of the present invention will be described with reference to the drawings.
第１図（ａ）は本発明の実施例を表すブロック図。FIG. 1(a) is a block diagram showing an embodiment of the present invention.
第１図（ｂｌは通電タイムチャートである。なお全図を
通じて同一記号は同一の対象物を表す。FIG. 1 (bl is an energization time chart. The same symbols represent the same objects throughout the figures.
第１図（ａ）において、１２は記憶部１７に格納されて
いるプログラムにより機能□各部を制御する制御部、１
３はワードプロセッサ、端末装置等と接続するインタフ
ェース部、１４はインタフェース部１３を通じて受信し
た印字文字情報を格納する印字文字記憶部で通常印字１
９４７分の印字文字情報を一括受信し格納する。１５は
文字ドツトパターンを格納するドツトパターン記憶部、
１６は印字すべき文字ドツトパターンをドツトパターン
記憶部１５より抽出し格納する印字ドツト記憶部である
。In FIG. 1(a), reference numeral 12 denotes a control unit that controls each unit according to a program stored in the storage unit 17;
Reference numeral 3 denotes an interface section that connects to a word processor, terminal device, etc., and 14 denotes a print character storage section that stores print character information received through the interface section 13, which normally prints 1.
947 minutes of printed character information is received and stored at once. 15 is a dot pattern storage unit that stores character dot patterns;
Reference numeral 16 denotes a print dot storage section which extracts character dot patterns to be printed from the dot pattern storage section 15 and stores them.
１８．１９．２０はそれぞれ単発通電パルス発生部、連
続通電パルス発生部、予熱通電パルス発生部であって、
第１図（ｂ）に示すパルス位置で、且つ印字周期ｔｗを
持つ連続した単発通電パルスＳ。18, 19, and 20 are a single energization pulse generation section, a continuous energization pulse generation section, and a preheating energization pulse generation section, respectively,
Continuous single energization pulses S at the pulse positions shown in FIG. 1(b) and having a printing period tw.
連続通電パルスＣ１予熱通電パルスｐをそれぞれ発生す
る。A continuous energization pulse C1 and a preheating energization pulse p are generated, respectively.
２１ａ〜２１ｎはライン同時印字のため設けられた複数
の発熱素子８に対応し、その通電パルスを選択するゲー
ト部２２ａ〜２２ｎにゲートパルスを供給するゲートパ
ルス発生部であって、制御部１２の指令により所定の通
電パルスを選択するゲートパルス（パルス幅ｔｗ）を発
生する。Reference numerals 21a to 21n are gate pulse generating units that supply gate pulses to gate units 22a to 22n that correspond to a plurality of heating elements 8 provided for simultaneous line printing and select the energization pulses, and are connected to the control unit 12. A gate pulse (pulse width tw) for selecting a predetermined energization pulse is generated according to a command.
９ａ〜９ｎはスイッチング素子、８ａ〜８ｎはサーマル
ヘッドの発熱素子である。9a to 9n are switching elements, and 8a to 8n are heating elements of the thermal head.
その他、１１は各部に同期パルスを供給する同期パルス
発生部、２３はキャリッジモータ等を駆動する駆動部で
ある。In addition, 11 is a synchronizing pulse generating section that supplies synchronizing pulses to each part, and 23 is a driving section that drives a carriage motor and the like.
以上の各部機能を有するプリンタにおいて、動作を以下
説明する。The operation of the printer having the above functions will be described below.
単発通電パルス発生部１８．連続通電パルス発生部１９
．予熱通電パルス発生部２０は、常時。Single energization pulse generator 18. Continuous energization pulse generator 19
．． The preheating energization pulse generator 20 is always active.
同期パルス発生部１１の発生する同期パルスに従い、そ
れぞれ印字周期ｔｗの周期を持つ単発通電パルスＳ、連
続通電パルスＣ，予熱通電パルスｐを発生する。In accordance with the synchronization pulses generated by the synchronization pulse generator 11, a single energization pulse S, a continuous energization pulse C, and a preheating energization pulse p each having a printing cycle tw are generated.
制御部１２は該プリンタに接続された装置より印字文字
情報を受信し印字文字記憶部１４に格納した後、該文字
情報のドツトパターンをドツトパターン記憶部１５より
抽出し、印字ドツト記憶部１６に格納し、その情報に基
づき、ライン同時に順次ゲートパルス発生部２１ａ〜２
１ｎを駆動する。The control unit 12 receives printed character information from a device connected to the printer, stores it in the printed character storage unit 14, extracts a dot pattern of the character information from the dot pattern storage unit 15, and stores it in the printed dot storage unit 16. Based on the information, the gate pulse generators 21a to 2
Drive 1n.
ゲートパルス発生部２１ａ〜２１ｎは上記ドツト印字情
報に従い、印字周期ｔｗのパルス幅を持つゲート信号を
発生するが、前回のドツト印字情報を格納しておき、連
続印字の場合は連続通電ゲートパルスを、単発印字のと
きは単発通電ゲートパルスを、また無印字のときは予熱
通電ゲートパルスを発生する。The gate pulse generators 21a to 21n generate a gate signal having a pulse width of the printing period tw according to the above dot printing information, but the previous dot printing information is stored, and in the case of continuous printing, continuous energization gate pulses are generated. , a single energization gate pulse is generated for single printing, and a preheating energization gate pulse is generated for no printing.
ゲート部２２ａ〜２２ｎはそれぞれのゲートパルスによ
り通電パルスを選択し、スイッチング素子９ａ〜９ｎを
駆動して、該発熱素子８に通電する。The gate sections 22a to 22n select an energizing pulse using each gate pulse, drive the switching elements 9a to 9n, and energize the heating element 8.
以上により第１図（ｂ）に示す印字方式を実施すること
ができるが、各パルス発生部１８，１９．２０において
、パルス前縁を可変にして調節する機能を設けるとさら
に容易に実施し得る。As described above, the printing method shown in FIG. 1(b) can be implemented, but it can be implemented even more easily if a function is provided in each pulse generator 18, 19, 20 to vary and adjust the leading edge of the pulse. .
第１図（ａ）において、印字文字記憶部１４．印字ドツ
ト記憶部１６は読出し／書込み可能な記憶部。In FIG. 1(a), the printed character storage section 14. The print dot storage section 16 is a readable/writable storage section.
ドツトパターン記憶部１５．記憶部１７は読出し専用記
憶部で、それぞれまとめることができる。Dot pattern storage section 15. The storage unit 17 is a read-only storage unit and can be grouped together.
以上説明したように１本発明によれば印字周期における
予熱通電パルス位置を印字加熱用の通電パルスに対して
、相対的に後方に位置させることにより、にじみ等が防
止でき、従って印字速度を向上させる効果がある。As explained above, according to the present invention, by locating the preheating energization pulse position in the printing cycle relatively behind the energization pulse for printing heating, it is possible to prevent bleeding, etc., and thus improve the printing speed. It has the effect of
第１図（ａｌは実施例を表すブロック図。 第１図（ｂ）は印字タイムチャート 第２図（ａｌはサーマルプリンタの構造図。 第２図（ｂ）はサーマルヘッドの詳細図。 第２図（Ｃ）は従来例の印字タイムチャート。 である。図中。 ４はサーマルヘッド。 ８は発熱素子 ９はスイッチング素子。 １１は同期パルス発生部、′ １２は制御部、 １４は印字文字記憶部。 １５はドツトパターン記憶部。 １６は印字ドツト記憶部。 １８は単発通電パルス発生部。 １９は連続通電パルス発生部。 ２０は予熱通電パルス発生部。 ２１ａ〜２１ｎはゲートパルス発生部。 ２２ａ〜２２ｎはゲート部。 ｐは予熱通電パルス、Ｓは単発通電パルス。 Ｃは連続通電パルス、ｔｗは印字周期。 である。 FIG. 1 (al is a block diagram representing an embodiment. Figure 1 (b) is a printing time chart FIG. 2 (al is a structural diagram of a thermal printer. FIG. 2(b) is a detailed view of the thermal head. FIG. 2(C) is a printing time chart of a conventional example. It is. In the figure. 4 is the thermal head. 8 is a heating element. 9 is a switching element. 11 is a synchronization pulse generator,' 12 is a control unit, and 14 is a printed character storage unit. 15 is a dot pattern storage section. 16 is a print dot storage section. 18 is a single energization pulse generator. 19 is a continuous energization pulse generator. 20 is a preheating energization pulse generating section. 21a to 21n are gate pulse generators. 22a to 22n are gate parts. p is a preheating energization pulse, and S is a single energization pulse. C is a continuous energizing pulse, and tw is a printing cycle. It is.
Claims (1)
発熱素子を加熱して印字するシリアルサーマルプリンタ
におけるサーマルヘッド制御方式であって、一定速度に
移動するサーマルヘッドに同期した印字周期中に所定印
字部分の発熱素子を加熱する加熱手段と、上記印字部分
を除く発熱素子を上記印字周期中に予熱する予熱手段と
、上記周期中における予熱開始時刻を加熱開始時刻と同
時またはそれ以降とする制御手段とを有することを特徴
とするサーマルヘッド制御方式。A thermal head control method in a serial thermal printer in which a thermal head equipped with a plurality of heating elements is moved and printed by heating the heating elements, and the thermal head is printed at a predetermined time during a printing cycle synchronized with the thermal head moving at a constant speed. a heating means for heating the heat generating elements of the portion; a preheating means for preheating the heat generating elements other than the printed portion during the printing period; and a control means for making the preheating start time during the period the same as or after the heating start time. A thermal head control method comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23606284A JPS61123550A (en) | 1984-11-09 | 1984-11-09 | Thermal head controlling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23606284A JPS61123550A (en) | 1984-11-09 | 1984-11-09 | Thermal head controlling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61123550A true JPS61123550A (en) | 1986-06-11 |
Family
ID=16995161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23606284A Pending JPS61123550A (en) | 1984-11-09 | 1984-11-09 | Thermal head controlling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61123550A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349456A (en) * | 1986-08-19 | 1988-03-02 | Canon Inc | Thermal dot line type recording method |
| JPS63134259A (en) * | 1986-11-26 | 1988-06-06 | Nippon Signal Co Ltd:The | Method for heating thermal head in high-speed thermal transfer printing |
| JPS63134260A (en) * | 1986-11-26 | 1988-06-06 | Nippon Signal Co Ltd:The | Method for heating thermal head in high speed-thermal transfer printing |
| US5701067A (en) * | 1995-02-24 | 1997-12-23 | Sanyo Electric Co., Ltd. | Battery charger and solar cells for battery charging |
| JPH1016413A (en) * | 1996-06-28 | 1998-01-20 | Dainippon Printing Co Ltd | Thermal transfer recording method |
| EP1900532A1 (en) * | 2006-09-13 | 2008-03-19 | Mitsubishi Electric Corporation | Method of controlling a thermal head |
-
1984
- 1984-11-09 JP JP23606284A patent/JPS61123550A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349456A (en) * | 1986-08-19 | 1988-03-02 | Canon Inc | Thermal dot line type recording method |
| JPS63134259A (en) * | 1986-11-26 | 1988-06-06 | Nippon Signal Co Ltd:The | Method for heating thermal head in high-speed thermal transfer printing |
| JPS63134260A (en) * | 1986-11-26 | 1988-06-06 | Nippon Signal Co Ltd:The | Method for heating thermal head in high speed-thermal transfer printing |
| US5701067A (en) * | 1995-02-24 | 1997-12-23 | Sanyo Electric Co., Ltd. | Battery charger and solar cells for battery charging |
| US5855692A (en) * | 1995-02-24 | 1999-01-05 | Sanyo Electric Co., Ltd. | Battery charger and solar cells for battery charging |
| JPH1016413A (en) * | 1996-06-28 | 1998-01-20 | Dainippon Printing Co Ltd | Thermal transfer recording method |
| EP1900532A1 (en) * | 2006-09-13 | 2008-03-19 | Mitsubishi Electric Corporation | Method of controlling a thermal head |
| JP2008068464A (en) * | 2006-09-13 | 2008-03-27 | Mitsubishi Electric Corp | Method for controlling thermal head |
| US7683921B2 (en) | 2006-09-13 | 2010-03-23 | Mitsubishi Electric Corporation | Method of controlling a thermal head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0193340A1 (en) | Thermal printer | |
| US4429318A (en) | Thermal transfer printer | |
| EP0193342A1 (en) | Thermal printer | |
| US5682504A (en) | Driving technique for printhead of thermal printer to improve print quality | |
| JPS61123550A (en) | Thermal head controlling system | |
| JP4457452B2 (en) | Printer device | |
| EP0193343B1 (en) | Thermal printer | |
| JPS62105650A (en) | Heat-sensitive printer | |
| JPS61295056A (en) | Serial thermal transfer printer | |
| JPS6090778A (en) | Color thermal transfer recorder | |
| JPH07214813A (en) | Thermal printer | |
| US6102593A (en) | High speed print quality font modification | |
| JP2000190548A (en) | Thermal printer and printing method of thermal printer | |
| JPS63107569A (en) | Printing control system | |
| JPH0447625B2 (en) | ||
| JPS61283594A (en) | Recording method for thermal printer | |
| JPS60168670A (en) | Printing-controlling system | |
| JP2834019B2 (en) | Line type thermal printer and printing method thereof | |
| JPH01241463A (en) | Thermal head drive circuit | |
| JPS61172771A (en) | Printing apparatus | |
| JP2012076351A (en) | Printer | |
| JPS6317071A (en) | Print erasing method for thermal transfer printer | |
| JPS59135173A (en) | Thermal printer | |
| JPS6147273A (en) | Recording method of serial type thermal transfer printer | |
| JPH0647946A (en) | Multi-color printing method in thermal printer |