JPH0373476B2 - - Google Patents
Info
- Publication number
- JPH0373476B2 JPH0373476B2 JP58131271A JP13127183A JPH0373476B2 JP H0373476 B2 JPH0373476 B2 JP H0373476B2 JP 58131271 A JP58131271 A JP 58131271A JP 13127183 A JP13127183 A JP 13127183A JP H0373476 B2 JPH0373476 B2 JP H0373476B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- image signal
- recording time
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 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
- B41J2/35—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 providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/36—Print density control
Landscapes
- Electronic Switches (AREA)
- Fax Reproducing Arrangements (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はフアクシミリ装置等に用いる感熱記録
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a thermal recording device used in facsimile machines and the like.
従来例の構成とその問題点
感熱記録装置は、複数の発熱体（記録素子）を
有するサーマルヘツドを用い、画信号中の黒画素
に対応する発熱体に記録電力を供給し、その発熱
体が発するジユール熱で感熱記録紙を発色させた
り、または感熱転写紙のインクや染料を普通紙に
転写させることによつて、画信号の記録を行う。
従つて、発熱体に供給される記録電力量が変動す
ると、記録濃度ムラが発生する。Conventional structure and its problems A thermal recording device uses a thermal head having a plurality of heating elements (recording elements), and supplies recording power to the heating element corresponding to a black pixel in an image signal. Image signals are recorded by causing the thermal recording paper to develop color using the generated Joule heat, or by transferring ink or dye from the thermal transfer paper to plain paper.
Therefore, when the amount of recording power supplied to the heating element fluctuates, uneven recording density occurs.
さて、従来の感熱記録装置においては、発熱体
に記録電力を供給するための電源（以下、記録電
源と称する）として定電圧電源を用いることによ
り、記録電力量の変動を抑えて記録濃度の均一化
を図つている。しかし、定電圧電源とはいつて
も、負荷電流が変化すると電源電圧の過渡的な変
動が生じ、その電源電圧の変動幅と変動時間（以
下、過渡時間と称する）は負荷電流の大きさ（同
時に記録される黒画素の個数、つまり画信号の黒
率に比例する）によつて変化する。このような電
源電圧の変動幅や過渡時間の変動は発熱体に対す
る記録電力量の変動となるから、従来は、画信号
の黒率によつて記録濃度が変化するという問題点
があつた。特に、最近の高速感熱記録装置におい
ては、記録時間が過渡時間に接近しているため
に、電源電圧の過渡的変動による記録濃度ムラを
無視できなくなつている。 Now, in conventional thermal recording devices, by using a constant voltage power source as a power source (hereinafter referred to as a recording power source) to supply recording power to a heating element, fluctuations in recording power amount are suppressed and recording density is uniform. We are trying to make this happen. However, even though it is a constant voltage power supply, transient fluctuations in the power supply voltage occur when the load current changes, and the fluctuation width and fluctuation time (hereinafter referred to as transient time) of the power supply voltage are determined by the magnitude of the load current ( It changes depending on the number of black pixels recorded simultaneously (proportional to the black rate of the image signal). Since such fluctuations in the power supply voltage range and transient time result in fluctuations in the amount of recording power applied to the heating element, there has conventionally been a problem in that the recording density changes depending on the black ratio of the image signal. In particular, in recent high-speed thermal recording apparatuses, since the recording time approaches the transient time, it is no longer possible to ignore recording density unevenness due to transient fluctuations in the power supply voltage.
そのような問題に対し、記録電源の電圧安定度
をさらに高め、電源電圧の変動幅を抑えかつ過渡
時間を短縮することで対処するこことが考えられ
る。しかし、これは記録電源の著しいコスト上昇
を招き、結果として記録装置が高価になつてしま
うという問題がある。 It is conceivable to deal with such problems by further increasing the voltage stability of the recording power source, suppressing the fluctuation width of the power source voltage, and shortening the transient time. However, this causes a significant increase in the cost of the recording power source, resulting in a problem that the recording apparatus becomes expensive.
記録濃度ムラの原因としては、上に述べた電源
電圧の過渡変動の他にサーマルヘツドの雰囲気温
度の変動がある。すなわち、電源電圧の過渡変動
の影響を除去し、記録電力量を一定に保つたとし
ても、サーマルヘツドの雰囲気温度が変化する
と、発熱体の温度が変動し、その結果記録濃度ム
ラを起す。このような記録濃度ムラを防止するた
めに、電源電圧を雰囲気温度に応じて変化させる
などの対策がとられているが、これは記録電源の
複雑化や電力損失の増加を招き易く、さらにそれ
ほど高い精度の補償を望めないというような問題
がある。 In addition to the above-mentioned transient fluctuations in the power supply voltage, the causes of uneven recording density include fluctuations in the ambient temperature of the thermal head. That is, even if the influence of transient fluctuations in the power supply voltage is removed and the amount of recording power is kept constant, if the ambient temperature of the thermal head changes, the temperature of the heating element will fluctuate, resulting in uneven recording density. In order to prevent such recording density unevenness, measures such as changing the power supply voltage according to the ambient temperature have been taken, but this tends to complicate the recording power supply and increase power loss. There is a problem in that highly accurate compensation cannot be expected.
発明の目的
本発明は上記従来の問題点を解消するもので、
電源電圧の過渡変動、およびサーマルヘツドの雰
囲気温度の変動による記録濃度ムラを大幅に減少
し、かつ比較的低コストで実現可能な感熱記録装
置を提供することを目的とする。Purpose of the invention The present invention solves the above-mentioned conventional problems.
It is an object of the present invention to provide a thermal recording device which can significantly reduce recording density unevenness due to transient fluctuations in power supply voltage and fluctuations in atmospheric temperature of a thermal head, and which can be realized at relatively low cost.
発明の構成
本発明は感熱記録装置において、サーマルヘツ
ドの雰囲気温度を検出する温度検出手段と、記録
すべき画信号中の黒画素または白画素を計数する
計数手段と、この計数手段の計数値および上記温
度検出手段の検出温度に従つて、サーマルヘツド
の発熱体に記録電力を供給する時間（記録時間）
を決定する記録時間決定手段とを設け、画信号の
黒率または白率、およびサーマルヘツドの雰囲気
温度に応じ記録時間を制御して記録電力量を適正
化することにより、上述の目的を達成せんとする
ものである。Structure of the Invention The present invention provides a thermal recording device that includes a temperature detection means for detecting the ambient temperature of a thermal head, a counting means for counting black pixels or white pixels in an image signal to be recorded, a count value of the counting means, and a temperature detecting means for detecting the ambient temperature of a thermal head. Time for supplying recording power to the heating element of the thermal head according to the temperature detected by the temperature detection means (recording time)
The above object is achieved by controlling the recording time according to the black rate or white rate of the image signal and the ambient temperature of the thermal head to optimize the recording power amount. That is.
実施例の説明
以下、図面を参照し本発明の実施例について説
明する。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例による感熱記録装置
の概略ブロツク図である。この図において、１〜
４はそれぞれ外部回路（図示されていない）と接
続される端子である。端子１は画信号PIXの入力
端子、端子２は画信号サンプリング用クロツク
CLOCKの入力端子、端子３は画信号有効区間信
号ENABLEの入力端子、端子４は画信号要求信
号REQUESTの出力端子である。 FIG. 1 is a schematic block diagram of a thermal recording apparatus according to an embodiment of the present invention. In this figure, 1 to
4 are terminals each connected to an external circuit (not shown). Terminal 1 is the input terminal for the image signal PIX, and terminal 2 is the clock for image signal sampling.
The input terminal for CLOCK, terminal 3 is the input terminal for the image signal valid period signal ENABLE, and the terminal 4 is the output terminal for the image signal request signal REQUEST.
５はサーマルヘツドであり、１回の記録動作で
記録される画信号の画素数と同数の発熱体（記録
素子）を有するものである。６はサーマルヘツド
駆動部、７は記録電源である。８は画信号中の黒
画素を計数する黒画素カウンタである。９はサー
マルヘツド５の雰囲気温度を検出する温度検出部
であり、温度センサと、この温度センサで検出さ
れた雰囲気温度をデイジタル信号に変換する回路
とから成る。１０は記録時間決定部であり、２つ
のROM１１，１２と加算回路１３より成る。１
４は記録パルスRPを発生する記録パルス発生部
である。１５は装置全体の制御を行う制御部であ
る。 Reference numeral 5 denotes a thermal head, which has the same number of heating elements (recording elements) as the number of pixels of an image signal recorded in one recording operation. 6 is a thermal head drive section, and 7 is a recording power source. 8 is a black pixel counter that counts black pixels in the image signal. A temperature detection section 9 detects the ambient temperature of the thermal head 5, and is composed of a temperature sensor and a circuit that converts the ambient temperature detected by the temperature sensor into a digital signal. Reference numeral 10 denotes a recording time determining section, which consists of two ROMs 11 and 12 and an adder circuit 13. 1
Reference numeral 4 denotes a recording pulse generator that generates recording pulses RP. Reference numeral 15 denotes a control section that controls the entire apparatus.
次に上記実施例の動作を説明する。 Next, the operation of the above embodiment will be explained.
制御部１５は、まず黒画素カウンタ８をリセツ
トし、ついで画信号要求信号REQUESTをオン
する。外部回路は画信号要求信号REQUESTの
オンを検出すると、画信号有効区間信号
ENABLEをオンし、クロツクCLOCKと同期し
た画信号PIXの転送を開始する。制御部１５は、
画信号有効区間信号ENABLEのオンを検出する
と、画信号要求信号REQUESTをオフする。 The control section 15 first resets the black pixel counter 8, and then turns on the image signal request signal REQUEST. When the external circuit detects that the image signal request signal REQUEST is on, it outputs the image signal valid period signal.
Turn on ENABLE and start transferring the image signal PIX in synchronization with the clock CLOCK. The control unit 15 is
When it is detected that the image signal valid period signal ENABLE is turned on, the image signal request signal REQUEST is turned off.
サーマルヘツド駆動部６は内部にシフトレジス
タを有しており、転送されてきた画信号PIXをそ
のシフトレジスタにクロツクCLOCKのタイミン
グで順次取り込み蓄積する。また黒画素カウンタ
８は画信号有効区間信号ENABLEがオンしてい
る規間に動作し、画信号PIXが“１”（黒画素）
の時のクロツクCLOCKを計数する。つまり、画
信号RIX中の黒画素を計数する。 The thermal head driving section 6 has an internal shift register, and the transferred image signal PIX is sequentially taken into the shift register at the timing of the clock CLOCK and stored therein. In addition, the black pixel counter 8 operates during the period when the image signal valid interval signal ENABLE is on, and the image signal PIX is "1" (black pixel).
Count the clock CLOCK at the time of . That is, black pixels in the image signal RIX are counted.
１回の記録動作で記録される画信号PIXの転送
を終了すると、外部回路は画信号有効区間信号
ENABLEをオフする。制御部１５は、画信号有
効区間信号ENABLEのオフを検出すると、記録
時間決定部１０の加算回路１３に対するイネーブ
ル信号を一時的にオンする。この時、加算回路１
３はROM１１の黒画素カウンタ８の計数値で指
定されるアドレスから読出されたデータと、他方
のROM１２の温度検出部９の出力信号（サーマ
ルヘツド５の雰囲気温度）で指定されるアドレス
から読出されたデータとが入力されており、これ
ら２つのデータの和（記録時間）に相当する値の
デイジタル信号が加算回路１３より出力される。
この直後に、制御部１５より記録パルス発生部１
４に対しトリガ信号が与えられる。記録パルス発
生部１４は、このトリガ信号を受けると、記録時
間決定部１０の出力信号で示される記録時間に相
当するパルス幅の記録パルスRPを発生する。 When the transfer of the image signal PIX recorded in one recording operation is completed, the external circuit transfers the image signal valid period signal.
Turn off ENABLE. When the control unit 15 detects that the image signal valid interval signal ENABLE is off, it temporarily turns on the enable signal for the addition circuit 13 of the recording time determining unit 10. At this time, adder circuit 1
3 is the data read from the address specified by the count value of the black pixel counter 8 of the ROM 11 and the address specified by the output signal (ambient temperature of the thermal head 5) of the temperature detection section 9 of the other ROM 12. The adder circuit 13 outputs a digital signal having a value corresponding to the sum (recording time) of these two data.
Immediately after this, the control section 15 causes the recording pulse generation section 1 to
A trigger signal is given to 4. When the recording pulse generating section 14 receives this trigger signal, it generates a recording pulse RP having a pulse width corresponding to the recording time indicated by the output signal of the recording time determining section 10.
サーマルヘツド駆動部６は、内部にラツチ回路
を持つており、画信号有効区間信号ENABLEの
オフ時に、内部のシフトレジスタの内容をラツチ
回路に一斉にラツチさせる。またサーマルヘツド
駆動部６は、サーマルヘツド５の各発熱体に対応
づけられたスイツチング素子を有し、内部のラツ
チ回路の“１”ビツトに対応するスイツチング素
子を、記録パルスRPのオン期間（記録時間）だ
け導通させ、そのスイツチング素子を通じて対応
する発熱体と記録電源７とを接続させる。このよ
うにして、画信号の黒画素に対応する発熱体にの
み記録パルスRPのオン期間だけ記録電源７より
記録電力が供給される。 The thermal head drive unit 6 has an internal latch circuit, and when the image signal valid period signal ENABLE is turned off, the contents of the internal shift register are latched all at once. The thermal head drive section 6 also has switching elements associated with each heating element of the thermal head 5, and controls the switching elements corresponding to the "1" bit of the internal latch circuit during the ON period (recording) of the recording pulse RP. time), and the corresponding heating element and the recording power source 7 are connected through the switching element. In this way, recording power is supplied from the recording power source 7 only to the heating element corresponding to the black pixel of the image signal during the ON period of the recording pulse RP.
その後、制御部１５は記録パルスRPのオフを
検出すると、黒画素カウンタ８をリセツトし、ま
た画信号要求信号REQUESTをオンし画信号の
転送に備える。 Thereafter, when the control section 15 detects that the recording pulse RP is off, it resets the black pixel counter 8 and turns on the image signal request signal REQUEST to prepare for image signal transfer.
次に、ROM１１，１２の記憶データについて
説明する。 Next, the data stored in the ROMs 11 and 12 will be explained.
まず、ROM１１の記憶データについて第２図
および第３図を用いて説明する。所定の雰囲気温
度において、種々の黒画素数の画信号の記録を行
い、第２図に示すような電源電圧の波形を観測す
る。電源電圧は、記録開始時に定常値V0より過
渡的に変動する。この変動領域（第２図の斜線領
域）の面積を求める。そして、その面積と同じ面
積となる定常値V0の波高値を持つ第３図に示す
ようなパルス波形の幅Δtを計算する。このよう
にして種々の黒画素数について求めたΔtの値を、
ROM１１に対応するアドレスに格納する。 First, the data stored in the ROM 11 will be explained using FIGS. 2 and 3. At a predetermined ambient temperature, image signals of various numbers of black pixels are recorded, and the waveform of the power supply voltage as shown in FIG. 2 is observed. The power supply voltage transiently fluctuates from the steady value V 0 at the start of recording. The area of this variation region (shaded region in FIG. 2) is determined. Then, the width Δt of a pulse waveform as shown in FIG. 3, which has a peak value of steady-state value V 0 and has the same area as that area, is calculated. The value of Δt obtained in this way for various numbers of black pixels is
Store it in the address corresponding to ROM11.
ROM１２の記録データについて、第４図およ
び第５図を用いて説明する。種々の雰囲気温度θ
において、所定の黒画素数の画信号の記録を行
い、所定の記録濃度が得られる記録パルス幅（第
４図のＴ）を求める。この時の電源電圧波形を観
測し、第４図の斜線領域の面積を求める。そし
て、それと同じ面積となる波高値V0の第５図に
示すようなパルス波形の幅T〓を計算する。この
ようにして得た種々の雰囲気温度に対するT〓を、
ROM１２の雰囲気温度に対応するアドレスに格
納する。 Recorded data in the ROM 12 will be explained using FIGS. 4 and 5. Various ambient temperatures θ
In this step, an image signal of a predetermined number of black pixels is recorded, and a recording pulse width (T in FIG. 4) at which a predetermined recording density is obtained is determined. The power supply voltage waveform at this time is observed, and the area of the shaded area in FIG. 4 is determined. Then, the width T〓 of the pulse waveform as shown in FIG. 5 with the peak value V 0 having the same area is calculated. The T〓 for various ambient temperatures obtained in this way is
The data is stored in the ROM 12 at an address corresponding to the ambient temperature.
ROM１１，１２の記憶データは以上に述べた
ようなものであるから、ROM１１，１２の出力
データの和である加算回路１３の出力データで指
定される記録時間だけサーマルヘツド駆動回路６
によつて発熱体に記録電力を供給させれば、画信
号の黒率または白率による電源電圧変動と、サー
マルヘツド５の雰囲気温度による発熱体の温度変
動を精密に補償し、記録濃度ムラを極めて少なく
することができる。また、記録電圧の変動をそれ
ほど厳しく抑える必要はなくなり、またサーマル
ヘツド５の雰囲気温度に応じて電源電圧を変化さ
せる必要はなくなるから、記録電源７として比較
的簡単な定電圧電源を用いることができる。 Since the data stored in the ROMs 11 and 12 is as described above, the thermal head drive circuit 6 is used only for the recording time specified by the output data of the adder circuit 13, which is the sum of the output data of the ROMs 11 and 12.
By supplying recording power to the heating element, it is possible to accurately compensate for power supply voltage fluctuations due to the black rate or white rate of the image signal and temperature fluctuations of the heating element due to the ambient temperature of the thermal head 5, thereby reducing uneven recording density. It can be made extremely small. Further, it is no longer necessary to suppress fluctuations in the recording voltage so strictly, and there is no need to change the power supply voltage according to the ambient temperature of the thermal head 5, so a relatively simple constant voltage power supply can be used as the recording power supply 7. .
なお、記録時間決定部１０の２つのROM１
１，１２を１つのROMにまとめ、第３図のΔtと
第５図のT〓の和に相当するデータを格納してお
き、黒画素カウンタ８および温度検出部９の出力
信号をアドレス信号としてそのROMをアクセス
するようにし、加算回路１３を省くこともでき
る。 Note that the two ROMs 1 of the recording time determining section 10
1 and 12 in one ROM, and store data corresponding to the sum of Δt in Fig. 3 and T〓 in Fig. 5, and use the output signals of the black pixel counter 8 and temperature detection section 9 as address signals. It is also possible to access the ROM and omit the adder circuit 13.
また本実施例においては、サーマルヘツド駆動
部６をサーマルヘツド５から独立させているが、
これ等は一体化することも可能である。さらに本
実施例では、画信号の黒画素を計数したが、画信
号中の白画素を計数し、同様の記録時間制御を行
い得ることは明らかである。但しこの場合、
ROM１１の記憶データを変更する必要がある。 Further, in this embodiment, the thermal head drive section 6 is made independent from the thermal head 5, but
It is also possible to integrate these. Further, in this embodiment, the black pixels of the image signal are counted, but it is clear that the same recording time control can be performed by counting the white pixels of the image signal. However, in this case,
It is necessary to change the data stored in the ROM 11.
発明の効果
上述のように本発明は、計数手段により求めた
画信号の黒画素数または白画素数と、温度検出手
段によつて検出したサーマルヘツドの雰囲気温度
に従つて、記録時間決定手段で記録時間を適切に
決定するものであるから、画信号の黒率または白
率とサーマルヘツドの雰囲気温度の影響を精密に
補償し、記録濃度ムラを大幅に減らすことができ
るとともに、記録電源を簡略化することが可能で
あり、また上記各手段も比較的安価に実現可能で
あるため、記録画質の優れた感熱記録装置を比較
的安価に提供できるという効果を得られる。Effects of the Invention As described above, the present invention has a recording time determining means that uses the recording time determining means according to the number of black pixels or white pixels of the image signal obtained by the counting means and the ambient temperature of the thermal head detected by the temperature detecting means. Since it determines the recording time appropriately, it can accurately compensate for the effects of the black rate or white rate of the image signal and the ambient temperature of the thermal head, greatly reducing uneven recording density, and simplifying the recording power supply. In addition, since each of the above means can be realized at a relatively low cost, it is possible to provide a thermal recording device with excellent recording image quality at a relatively low cost.
第１図は本発明の一実施例による感熱記録装置
のブロツク図、第２図と第３図はそれぞれ第１図
における一方のROMの記憶データを説明するた
めの波形図、第４図と第５図はそれぞれ第１図の
他方のROMの記憶データを説明するための波形
図である。
５……サーマルヘツド、６……サーマルヘツド
駆動部、７……記録電源、８……黒画素カウン
タ、９……温度検出部、１０……記録時間決定
部、１１，１２……ROM、１３……加算回路、
１５……制御部。
FIG. 1 is a block diagram of a thermal recording device according to an embodiment of the present invention, FIGS. 2 and 3 are waveform diagrams for explaining data stored in one ROM in FIG. 1, and FIGS. FIG. 5 is a waveform chart for explaining the data stored in the other ROM in FIG. 1, respectively. 5... Thermal head, 6... Thermal head drive section, 7... Recording power source, 8... Black pixel counter, 9... Temperature detection section, 10... Recording time determining section, 11, 12... ROM, 13 ...addition circuit,
15...Control unit.
Claims (1)
のサーマルヘツドの雰囲気温度を検出する温度検
出手段と、記録すべき画信号中の黒画素または白
画素を計数する計数手段と、前記温度検出手段に
よる検出温度に応じた記録時間制御情報を出力す
る第１の記憶手段と、前記計数手段による計数値
に応じた記録時間制御情報を出力する第２の記憶
手段と、前記第１の記憶手段および第２の記憶手
段の出力する記録時間制御情報を演算して記録時
間を決定する記録時間決定手段と、前記画信号中
の黒画素に対応する前記発熱体に前記記録時間決
定手段の出力する記録時間だけ記録電源より記録
電力を供給させる手段とを有する感熱記録装置。1. A thermal head having a plurality of heating elements, a temperature detecting means for detecting the ambient temperature of the thermal head, a counting means for counting black pixels or white pixels in an image signal to be recorded, and detection by the temperature detecting means. a first storage means for outputting recording time control information according to the temperature; a second storage means for outputting recording time control information according to the count value by the counting means; the first storage means and the second storage means; recording time determining means for determining recording time by calculating recording time control information output from storage means; and only recording time output by said recording time determining means to said heating element corresponding to a black pixel in said image signal. A thermal recording device comprising means for supplying recording power from a recording power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131271A JPS6023062A (en) | 1983-07-18 | 1983-07-18 | Heat sensitive recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131271A JPS6023062A (en) | 1983-07-18 | 1983-07-18 | Heat sensitive recorder |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4294129A Division JPH05304592A (en) | 1992-11-02 | 1992-11-02 | Thermosensing recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6023062A JPS6023062A (en) | 1985-02-05 |
| JPH0373476B2 true JPH0373476B2 (en) | 1991-11-21 |
Family
ID=15054023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58131271A Granted JPS6023062A (en) | 1983-07-18 | 1983-07-18 | Heat sensitive recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023062A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6266953A (en) * | 1985-09-19 | 1987-03-26 | Tokyo Electric Co Ltd | Thermal head power supply circuit |
| JPH0678005B2 (en) * | 1985-09-19 | 1994-10-05 | 東京電気株式会社 | Power supply circuit of thermal head |
| JPS62128276A (en) * | 1985-11-28 | 1987-06-10 | Fujitsu Ltd | Thermal head control system |
| JPS63212562A (en) * | 1987-03-02 | 1988-09-05 | Victor Co Of Japan Ltd | Heat sensitive type printer |
| JP2503251B2 (en) * | 1988-05-24 | 1996-06-05 | アルプス電気株式会社 | Energization control method for thermal head |
| KR0138362B1 (en) * | 1993-05-17 | 1998-05-15 | 김광호 | Thermal transfer printer device and method |
-
1983
- 1983-07-18 JP JP58131271A patent/JPS6023062A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6023062A (en) | 1985-02-05 |
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