JPS6294360A - Thermal recording apparatus - Google Patents
Thermal recording apparatusInfo
- Publication number
- JPS6294360A JPS6294360A JP60233253A JP23325385A JPS6294360A JP S6294360 A JPS6294360 A JP S6294360A JP 60233253 A JP60233253 A JP 60233253A JP 23325385 A JP23325385 A JP 23325385A JP S6294360 A JPS6294360 A JP S6294360A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- pulse
- line
- paper
- time
- 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.)
- Granted
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
- B41J2/32—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
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はファクシミリ、プリンタ等に使用される感熱記
録装置に保妙、詳しくは装置の低騒音化を図るようにし
た記録装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a thermal recording device used in facsimiles, printers, etc., and more particularly to a recording device designed to reduce noise.
サーマルヘッドを利用して熱的な記録を行う記録装置は
現象、定着機構を必要とすることなく、小型でかつ安価
に製作できるので、ファックス、プリンタ等に広く使用
されている。Recording devices that perform thermal recording using a thermal head do not require a fixing mechanism, are small in size, and can be manufactured at low cost, and are therefore widely used in facsimile machines, printers, and the like.
これ等の装置はOAIオフィス・オートメーション)の
普及に伴い、利用分野が一般事務室に急速に広がってお
り、事務室環境を保全する立場から低騒音で安価な機器
の開発が強く求められている。この種の記録装置の騒音
は記録紙の搬送用モータの駆動音の他にサーマルヘッド
と記録紙の感熱層の粘着剥離音がある。感熱記録におけ
る発熱素子の温度変化を示すと第6図のようになる。発
熱素子はA点で加熱パルス信号を受けると急激に加熱さ
れ、その後、徐々に冷却される。この過程で発熱素子に
対接する記録紙の感熱層はB点付近で融点に達しC点付
近で凝固点になる経過をたどり、発色して記録される。With the spread of OAI (Office Automation), the field of use of these devices is rapidly expanding to general offices, and from the standpoint of preserving the office environment, there is a strong demand for the development of low-noise, inexpensive equipment. . The noise of this type of recording apparatus includes not only the drive sound of the motor for conveying the recording paper but also the sound of adhesive peeling between the thermal head and the heat-sensitive layer of the recording paper. FIG. 6 shows the temperature change of the heating element during thermosensitive recording. When the heating element receives the heating pulse signal at point A, it is rapidly heated and then gradually cooled down. In this process, the heat-sensitive layer of the recording paper that is in contact with the heating element reaches its melting point near point B and reaches its freezing point near point C, and is colored and recorded.
記録紙は融点以上の温度になるので、サーマルヘッドの
表面と融着し、時間の経過を経て凝固粘着する。Since the recording paper reaches a temperature above its melting point, it fuses with the surface of the thermal head and solidifies and sticks over time.
このサーマルヘッドと記録紙間の粘着力はサーマルヘッ
ドの表向温度に反比例する。感熱記録装置では高速記録
性能を達成するために、記録動作と紙送り動作を同時に
行っている。The adhesive force between the thermal head and the recording paper is inversely proportional to the surface temperature of the thermal head. In order to achieve high-speed recording performance, thermal recording devices perform recording operations and paper feeding operations simultaneously.
−万、記録動作は記録用′電源の小形化のために1ライ
ンを複数のブロックに分は時分割で行っているので、1
ラインの記録時間に比べて記録紙が移動している時間は
相対的に’ptかくなる。その結果、1ライン中の一部
のブロックでは紙送り停止中に記録動作を行うので、次
のラインの記録、紙送り動作までにサーマルヘッドと記
録紙の感熱層は凝固粘着する。-10,000, recording operation is performed by time division into multiple blocks for one line in order to downsize the recording power supply.
Compared to the line recording time, the time the recording paper is moving is relatively 'pt' longer. As a result, in some blocks in one line, the recording operation is performed while paper feeding is stopped, so that the thermal head and the heat-sensitive layer of the recording paper solidify and stick together before the next line's recording and paper feeding operations.
第7図はサーマルヘッドの表面温度とサーマルヘッドか
ら記録紙を剥がすときの剥離力の関係を示すものである
。FIG. 7 shows the relationship between the surface temperature of the thermal head and the peeling force when peeling recording paper from the thermal head.
この剥離力はサーマルヘッドの温度に反比例する。粘着
剥離音は剥離動作によって記録紙およびサーマルヘッド
を振動させ、その結果として生起する。This peeling force is inversely proportional to the temperature of the thermal head. The adhesive peeling sound is generated as a result of the recording paper and the thermal head being vibrated by the peeling operation.
第8図は感熱ファクシミリにおける騒音の周波数分析結
果を示したものである。図中の破線はモータ等の駆動音
の特性を、また、実線はこの駆動音と粘着剥離音の合成
特性を示したものである。FIG. 8 shows the results of frequency analysis of noise in a thermal facsimile. The broken line in the figure shows the characteristics of the driving sound of the motor, etc., and the solid line shows the composite characteristics of this driving sound and the adhesive peeling sound.
この特性曲線から明らかなように、粘着剥離音は100
0)12以上の耳障りな高周波数成分が主体であり、装
置の雰囲気温度が低い場合や数百ミリsec以−F記録
中断後に紙送り動作を行う場合、すなわち、比較的長い
冷却時間後に紙送りを行う場合に顕著である。また、こ
の剥離力はモータ負荷上昇の主因になり、モータの小形
低価格化の阻害の最大の因子になっている。As is clear from this characteristic curve, the adhesive peeling sound is 100
0) The main component is a harsh high frequency component of 12 or more, and when the ambient temperature of the device is low or when the paper feed operation is performed after recording has been interrupted for several hundred milliseconds or more, in other words, the paper feed operation occurs after a relatively long cooling time. This is noticeable when doing this. Further, this peeling force is a main cause of an increase in motor load, and is the biggest factor hindering the miniaturization and cost reduction of motors.
従来装置は例えば特開昭59−87405号に開示のよ
うにサーマルヘッドおよび記録紙出口開口部での吸音、
遮音および消音対策が行われていた。Conventional devices, for example, as disclosed in Japanese Patent Application Laid-open No. 59-87405, absorb sound at the thermal head and the recording paper exit opening;
Sound insulation and muffling measures were taken.
しかし、騒音発生源そのものの改良については配慮され
ていなかった。また、特開昭58−118277号では
各記録ラインの記録濃度の均一化をはかるために、記録
動作が所定の時間以−L中断した後の最初の印字動作を
2回続けて行う点が述べられているが、騒音対策につい
ては配慮されていなかった。However, no consideration was given to improving the noise generation source itself. Furthermore, in JP-A-58-118277, it is stated that in order to equalize the recording density of each recording line, the first printing operation is performed twice in succession after the recording operation is interrupted for a predetermined period of time. However, no consideration was given to noise countermeasures.
本発明はサーマルヘッドと記録紙との粘着によって生ず
る剥離音を低減し、低騒音化を達成する感熱記録装置全
提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a thermal recording device that reduces peeling noise caused by adhesion between a thermal head and recording paper, and achieves low noise.
本発明ではサーマルヘッドに内蔵された発熱素子の長手
方向と父差する方向に記録紙を移動させ、この発熱素子
に加熱パルスを印加して印字記録する感熱記録装置にお
いて、1−マルヘッドに加熱パルスを印加し記録動作し
た後、紙送りが所定時間以上中断した場合に、中断後記
録紙を次のラインに移動させる直前に記録動作に関与し
た少なくとも発熱素子に加熱パルスを印加する手段を具
備し、−ヒ記目的を達成するようにしたものである。In the present invention, in a thermal recording device that moves a recording paper in a direction parallel to the longitudinal direction of a heating element built into a thermal head and applies a heating pulse to the heating element to perform printing, the heating pulse is applied to a 1-maru head. means for applying a heating pulse to at least the heating element involved in the recording operation immediately before moving the recording paper to the next line after the interruption when paper feeding is interrupted for a predetermined time or more after the recording operation is performed by applying a heating pulse. , - It is designed to achieve the purpose described in (E).
以下、本発明の実施例を第1図〜第5図において説明す
る。Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.
第1図は本実施例の記録動作を説明するだめの説明図で
あり、lラインを複数のブロックに分け、時分割で記録
する例で、1ラインの記録と紙送り動作の開始タイミン
グが同一の場合を示している。FIG. 1 is an explanatory diagram for explaining the recording operation of this embodiment. It is an example in which one line is divided into multiple blocks and recorded in time division, and the start timing of recording one line and paper feeding operation are the same. The case is shown below.
この条件は前述のように記録用電源の小形化と高速記録
を達成するためである。This condition is for achieving miniaturization of the recording power source and high-speed recording as described above.
図において、時刻t1 で最初の1行目の記録操作が
開始されるとする。(a)の記録開始パルスと同期(〜
でいる紙送り用モータの駆動開始パルスのタイミング(
(C)参照)により(b)に示すように1ラインを4ブ
ロツクl)++、 DI、 DIS、 DI4に分は時
分割して記録すると共に、(d)に示すように記録紙を
1ラインの間隔tだけ副走査する。一方、モータの駆動
開始パルス(この場合は時刻1.が起点)からの経過時
間をタイマによって常時監視し、所定の時間(以下、設
定時間という)以内に次のラインの記録紙の紙送り開始
パルスが入力すると、に
この時刻鳴タイマは再設定し、第1ライン目とへ
同様な記録、紙送り動作を行う。In the figure, it is assumed that the recording operation for the first line is started at time t1. Synchronized with the recording start pulse in (a) (~
The timing of the drive start pulse of the paper feed motor (
(C)) As shown in (b), the minutes are recorded in 4 blocks (1) ++, DI, DIS, and DI4 in time division, and the recording paper is recorded in one line as shown in (d). The sub-scan is performed by an interval t. On the other hand, a timer constantly monitors the elapsed time from the motor drive start pulse (starting at time 1 in this case), and starts feeding the next line of recording paper within a predetermined time (hereinafter referred to as set time). When a pulse is input, this timer is reset and the same recording and paper feeding operations as for the first line are performed.
次に、上記経過時間が設定時間より長い場合、設定時間
以上に紙送り副走査の動作が中断した場合には時刻t、
から上記設定時間経過後の時刻t。Next, if the elapsed time is longer than the set time, and if the paper feed sub-scanning operation is interrupted for longer than the set time, then at time t,
Time t after the above-mentioned set time has elapsed.
でタイマ回路から(e)に示すようにパルスを出力する
。このパルスのタイミングによって中断直前のラインの
記録情報(図ではI)ms、 li■のブロック、すな
わち紙送り停止時に記録されたブロック)を再度重ね書
きする。この場合、記録紙の感熱層は必ずしも記録濃度
になる以上に加熱する必要はなく、はぼ融点付近まで加
熱すればよい。したがって、この設定は加熱パルスを記
録動作に関与した発熱素子の一部に印加するだけでもよ
い。またけ通常印字動作を行う場合の加熱パルスの電圧
より低くするか、あるいは加熱パルス幅を短かくするこ
とによって達成される。次に、上記重ね書き終了俊速や
かに次のラインの記録と紙送り動作が繰返される。Then, the timer circuit outputs a pulse as shown in (e). Depending on the timing of this pulse, the recorded information on the line immediately before the interruption (blocks I, ms, li, in the figure, i.e., the blocks recorded when paper feeding was stopped) is overwritten again. In this case, the heat-sensitive layer of the recording paper does not necessarily need to be heated to a temperature higher than the recording density, but it is sufficient to heat it to around the melting point. Therefore, in this setting, the heating pulse may only be applied to a part of the heating elements involved in the recording operation. This can be achieved by lowering the voltage of the heating pulse or by shortening the width of the heating pulse than in the case of normal printing operation. Next, as soon as the overwriting is completed, the recording of the next line and the paper feeding operation are repeated.
L記経過時間が設定時間よりも長くなる場合としては、
ファクシミリの場合ではS/Nが十分大きくとれない外
国との通信や記録情報が密で腹合に多くの時間を委する
原稿の通信、さらにGI規格等の低速の記録装置との通
信の場合に頻繁に生ずる。If the elapsed time is longer than the set time,
In the case of facsimile, communication with foreign countries where the S/N ratio is not high enough, communication of manuscripts that require a lot of time due to dense recorded information, and communication with low-speed recording devices such as GI standard. Occurs frequently.
ト記タイマの始動は紙送りタイミング信号、復合化回路
の出力信号、サーマルヘッドまたは記録紙の感熱紙の感
熱層の温度、または冷却時間に対応するタイミングを利
用する。The timer is started using timing corresponding to the paper feed timing signal, the output signal of the decoding circuit, the temperature of the thermal head or the thermal layer of the thermal paper of the recording paper, or the cooling time.
上記実施例では1ラインを4ブロツクに分は時分割記録
する場合で、モータ起動パルスによって距離lを一度に
移動する場合について説明したが、ブロック数が4ブロ
ツク以外やlラインの距離を複数回に分けて紙送りする
場合についても本発明の適用が可能である。In the above embodiment, one line is time-divisionally recorded in four blocks, and the motor starting pulse is used to move a distance l at once. The present invention can also be applied to the case where the paper is fed separately.
また、紙送り停止後に記録動作を行うブロックを正確に
特定する場合には紙送り軸の動きを監視するセンサ、例
えばエンコーダ出力とブロック毎の記録タイミング信号
等によって実現できる。In addition, in order to accurately specify the block in which a recording operation is to be performed after paper feeding is stopped, this can be realized using a sensor that monitors the movement of the paper feeding axis, such as an encoder output and a recording timing signal for each block.
また、−上記タイマの設定時間は粘着剥離音の大きさと
記録むら等の性能を考慮して適切な長さに選定すること
が可能である。Further, - the setting time of the above-mentioned timer can be selected to be an appropriate length taking into consideration the level of adhesive peeling sound and performance such as recording unevenness.
第2図は本発明を適用した感熱ファクシミリの受信部の
構成図である。図において、4調器1はファクシミリ送
信機(図示せず)から電話網2を介して送信されてくる
変調信号を復調して元のディジタル信号に変換する。こ
のディジタル信号は、例えば国際規格のG IIIファ
クシミリではMll(ModiNed l1uffrn
an)符号である。復号器3はこのMH符号を画信号に
復号する。FIG. 2 is a configuration diagram of a receiving section of a thermal facsimile to which the present invention is applied. In the figure, a 4-tone modulator 1 demodulates a modulated signal transmitted via a telephone network 2 from a facsimile transmitter (not shown) and converts it into an original digital signal. For example, in the international standard G III facsimile, this digital signal is Mll (ModiNed l1uffrn).
an) code. The decoder 3 decodes this MH code into an image signal.
記録ドライバ4は画信号を入力し、サーマルヘツド5を
駆動して記録紙6」二に画信号を記録する。The recording driver 4 inputs the image signal and drives the thermal head 5 to record the image signal on the recording paper 6''.
制御部7は装置全体のタイミングを管理し、画信号の発
生タイミングにより記録ドライバ4への印字パルス(加
熱パルス)およびパルスモータ8への駆動パルスのタイ
ミングを決定する。この両値rQ)
号の発生タイミングは画信号の持つ情報量によって大き
く変動する。例えば、国際標準感熱ファクシミリ(M)
■符号、最小伝送時間20m5/ライン、伝送速度48
00bI)S、1ライン1728画累)では1ライン分
の画信号が伝送されるに要する時間は20m5から1.
088まで変動するので、本発明の制御部7はパルスモ
ータ8の駆動間隔が設定値より長い場合、重ね書き動作
を行う機能を備えている。The control unit 7 manages the timing of the entire apparatus, and determines the timing of the print pulse (heating pulse) to the recording driver 4 and the drive pulse to the pulse motor 8 based on the generation timing of the image signal. The timing of generation of both values rQ) varies greatly depending on the amount of information contained in the image signal. For example, international standard thermal facsimile (M)
■ Code, minimum transmission time 20m5/line, transmission speed 48
00bI)S, 1 line with 1728 images), the time required to transmit the image signal for one line is from 20 m5 to 1.
Therefore, the control section 7 of the present invention has a function of performing an overwriting operation when the drive interval of the pulse motor 8 is longer than the set value.
次に、この重ね書き動作の制御について説明する。Next, control of this overwriting operation will be explained.
第3図はファクシミリの回路構成ブロック図であり、受
信信号2は復調器1によって復調され、MII符号とな
って符号バッファ9に格納される。FIG. 3 is a block diagram of a circuit configuration of a facsimile machine, in which the received signal 2 is demodulated by a demodulator 1 and stored in a code buffer 9 as an MII code.
M[I符号は符号バッファ9から復号器3に送られ、復
号器3ではMH符号を画信号に変換し、ラインバッファ
10に格納する。復号器3は1ライン分の画信号の複合
が終了すると、マイクロコンピュータ(以下、マイコン
という)11にその終了を指示する。マイコン11はタ
イマ12から前ライン記録開始時からの経過時間を入力
し、前ラインの記録が終了しているか、また経過時間が
所定値より長いかを判定する。経過時間が所定値より長
い場合、マイコン11はインターフェイス(以下、Il
oという)13を介して印字パルスを出力して記録ドラ
イバ4を再駆動し記録ドライバ4中の前ラインの画信号
を重ね書きした後、復号器3に転送指令を出力してライ
ンバッフアlo中の信号情報から次のラインの画信号を
1ライン分記録ドライバ4に転送される。復号器3はそ
の転送を終 ′了すると、その終了をマイコン11に
指示する。The M[I code is sent from the code buffer 9 to the decoder 3, and the decoder 3 converts the MH code into an image signal and stores it in the line buffer 10. When the decoder 3 finishes decoding the image signals for one line, it instructs the microcomputer (hereinafter referred to as microcomputer) 11 to complete the decoding. The microcomputer 11 inputs the elapsed time from the start of recording of the previous line from the timer 12, and determines whether recording of the previous line has ended or whether the elapsed time is longer than a predetermined value. If the elapsed time is longer than a predetermined value, the microcomputer 11
After re-driving the recording driver 4 by outputting a print pulse through the line buffer (referred to as o) 13 and overwriting the image signal of the previous line in the recording driver 4, a transfer command is output to the decoder 3 and the image signal in the line buffer lo is re-driven. Based on the signal information, the image signal of the next line is transferred to the recording driver 4 for one line. When the decoder 3 completes the transfer, it instructs the microcomputer 11 to complete the transfer.
マイコン11は転送終了信号を受信すると、T/。When the microcomputer 11 receives the transfer end signal, it transfers T/.
13を介して記録ドライバ′4に印字パルスを出力し、
パルスモータ8に駆動パルスを出力すると共に、タイマ
2の再設定を行う。13 to the recording driver '4,
A drive pulse is output to the pulse motor 8, and the timer 2 is reset.
以」二の一連の動作を記録終了まで繰返し行う。Repeat the following series of operations until the end of recording.
尚、14は装置全体を制御するための制御プログラムで
ある。Note that 14 is a control program for controlling the entire apparatus.
第4図は制御プログラムのブロック図である。FIG. 4 is a block diagram of the control program.
図において、マイコン11は制御プログラム14の実行
により、システム全体の制御を行う。In the figure, a microcomputer 11 controls the entire system by executing a control program 14.
制御プログラムはイニシャライズ15、通信制御16、
復号制御17、記録制御18の4つのタスクから構成さ
れておね、スケジューラ19がこれら4つのタスクの起
動および状態を管理する。The control program is initialization 15, communication control 16,
It consists of four tasks: a decoding control 17 and a recording control 18, and a scheduler 19 manages the activation and status of these four tasks.
上記記録制御プログラムの手順の一例を第5図の流れ図
を用いて説明する。An example of the procedure of the recording control program will be explained using the flowchart of FIG. 5.
スケジューラ19により記録制御18が起動されると、
ステップ1ではタイマの値が入力される。When the recording control 18 is activated by the scheduler 19,
In step 1, a timer value is input.
この入力値について、ステップ2では前ラインの記録が
終了しているか否かを判定する。記録が終了していない
場合にはスケジューラ19に戻るが、記録終了の場合に
はステップ3においてラインバッファ10に新しい画信
号が1ライン分以上存在するか否かを判定する。新しい
画信号が1ライン分以上存在しない場合にはスケジュー
ラ19に戻るが、存在する場合には次のステップ4にお
いてタイマ値より前ラインの印字からの経過時間が設定
値より大か否かを判定する。タイマ値が設定値より小の
場合にはステップ6に進む。タイマ値が設定値より大の
場合にはステップ5に進み、記録ドライバ4に印字パル
スを出力して前ラインの画信号を重ね書きする。ステッ
プ6では復号器3に転送命令を出して新しい画信号をラ
インバッファ10から記録ドライバ4に1ライン分を転
送する。Regarding this input value, in step 2 it is determined whether recording of the previous line has been completed. If the recording has not ended, the process returns to the scheduler 19, but if the recording has ended, it is determined in step 3 whether or not there is one or more new image signals in the line buffer 10. If there is no new image signal for one line or more, the process returns to the scheduler 19, but if there is, in the next step 4 it is determined whether the elapsed time from the printing of the previous line is greater than the set value than the timer value. do. If the timer value is smaller than the set value, proceed to step 6. If the timer value is greater than the set value, the process proceeds to step 5, where a print pulse is output to the recording driver 4 to overwrite the image signal of the previous line. In step 6, a transfer command is issued to the decoder 3 to transfer one line of new image signals from the line buffer 10 to the recording driver 4.
ステップ7では転送の終了を確認する。ステップ8では
記録ドライバ4に印字パルス、パルスモータ8に駆動パ
ルスを出力して記録を行う。そして、ステップ9ではタ
イマを再設定し、スケジューラ19に戻る。In step 7, the completion of the transfer is confirmed. In step 8, printing pulses are output to the recording driver 4 and drive pulses are output to the pulse motor 8 to perform recording. Then, in step 9, the timer is reset, and the process returns to the scheduler 19.
以−ヒ説明したように、本発明によれば記録動作後、紙
送りが所定時間以上中断した場合、中断後に次のライン
に記録紙を移動させる前に発熱素子に加熱パルスを印加
することにより、記録紙の剥離力が小さい状態で紙送り
が可能となり、その結果、粘着剥離音を大巾に低減でべ
ろので、記録装置の騒音はモータの駆動音のみにするこ
とができる。また、これによって、紙送り用の駆動モー
タは従来品に比べて小形で安価なものが適用できる。As explained below, according to the present invention, if paper feeding is interrupted for a predetermined period of time or more after the recording operation, a heating pulse is applied to the heating element before moving the recording paper to the next line after the interruption. In this case, it is possible to feed the recording paper with a small peeling force, and as a result, the noise of adhesive peeling is greatly reduced, so that the noise of the recording apparatus can be reduced to only the sound of the motor drive. Furthermore, this allows the use of a smaller and cheaper drive motor for paper feeding than conventional products.
第1図は本発明の記録装置における記録動作を説明する
ための説明図、第2図は本発明を適用した感熱ファクシ
ミリの受信部の構成図、第3図は第2図のファクシミリ
の回路構成ブロック図、第4図は第3図の制御プログラ
ムのブロック図、第5図は第4図の制御プログラムの手
順を示す流れ図、第6図は感熱記録における発熱素子の
温度変化を示す説明図、第7図はサーマルヘッドの表面
温度とサーマルヘッドから記録紙を薊がすときの剥離力
の関係を示す説明図、第8図は感熱ファクシミリにおけ
る騒音の周波数分析図である。
1・・・後調器、3・・・復号器、4・・・記録ドライ
バ、5・・・サーマルヘッド、6・・・記録紙、7・・
・制御部、8・・・パルスモータ、9・・・符号バッフ
ァ、10・・・ラインバッファ、12・・・タイマ、1
4・・・制御プログラム。FIG. 1 is an explanatory diagram for explaining the recording operation in the recording apparatus of the present invention, FIG. 2 is a configuration diagram of a receiving section of a thermal facsimile to which the present invention is applied, and FIG. 3 is a circuit configuration of the facsimile of FIG. 2. A block diagram, FIG. 4 is a block diagram of the control program shown in FIG. 3, FIG. 5 is a flowchart showing the procedure of the control program shown in FIG. 4, and FIG. FIG. 7 is an explanatory diagram showing the relationship between the surface temperature of the thermal head and the peeling force when separating recording paper from the thermal head, and FIG. 8 is a frequency analysis diagram of noise in a thermal facsimile. 1... Post-adjuster, 3... Decoder, 4... Recording driver, 5... Thermal head, 6... Recording paper, 7...
・Control unit, 8... Pulse motor, 9... Code buffer, 10... Line buffer, 12... Timer, 1
4...Control program.
Claims (1)
交差する方向に記録紙を移動させ、前記発熱素子に加熱
パルスを印加して印字記録する感熱記録装置において、
前記サーマルヘッドに加熱パルスを印加し記録動作した
後、紙送りが所定時間以上中断した場合に、中断後記録
紙を次のラインに移動させる直前に前記記録動作に関与
した少なくとも前記発熱素子に加熱パルスを印加する手
段を具備したことを特徴とする感熱記録装置。 2、特許請求の範囲第1項において、紙送り中断後、最
初に前記発熱素子に印加される加熱パルスの電圧は通常
印字動作を行う場合の加熱パルスの電圧より低いことを
特徴とする感熱記録装置。 3、特許請求の範囲第1項または第2項において、紙送
り中断後、最初に前記発熱素子に印加される加熱パルス
の幅は通常印字動作を行う場合の加熱パルスの幅より短
くしたことを特徴とする感熱記録装置。[Scope of Claims] 1. A thermal recording device that moves a recording paper in a direction intersecting the longitudinal direction of a heating element built into a thermal head, and applies a heating pulse to the heating element to perform printing,
If paper feeding is interrupted for a predetermined time or longer after a recording operation is performed by applying a heating pulse to the thermal head, at least the heating element involved in the recording operation is heated immediately before moving the recording paper to the next line after the interruption. A thermal recording device characterized by comprising means for applying pulses. 2. The thermal recording according to claim 1, wherein the voltage of the heating pulse first applied to the heating element after paper feeding is interrupted is lower than the voltage of the heating pulse when performing a normal printing operation. Device. 3. In claim 1 or 2, the width of the heating pulse initially applied to the heating element after paper feeding is interrupted is shorter than the width of the heating pulse when performing a normal printing operation. Features of thermal recording device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60233253A JPS6294360A (en) | 1985-10-21 | 1985-10-21 | Thermal recording apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60233253A JPS6294360A (en) | 1985-10-21 | 1985-10-21 | Thermal recording apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6294360A true JPS6294360A (en) | 1987-04-30 |
JPH0465788B2 JPH0465788B2 (en) | 1992-10-21 |
Family
ID=16952172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60233253A Granted JPS6294360A (en) | 1985-10-21 | 1985-10-21 | Thermal recording apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6294360A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187494A (en) * | 1989-07-19 | 1993-02-16 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus and method having preheating |
US5231421A (en) * | 1989-07-31 | 1993-07-27 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus with delayed driving |
US5248996A (en) * | 1990-02-01 | 1993-09-28 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus which avoids ink sheet sticking after recording data reception is interrupted |
US5262799A (en) * | 1989-07-19 | 1993-11-16 | Canon Kabushiki Kaisha | Recording apparatus with auxiliary recording and method for same |
US5533171A (en) * | 1992-03-18 | 1996-07-02 | Canon Kabushiki Kaisha | Image recording apparatus |
US5587733A (en) * | 1988-11-09 | 1996-12-24 | Canon Kabushiki Kaisha | Recording apparatus which avoids ink sheet sticking and image streaking |
US5598190A (en) * | 1992-06-12 | 1997-01-28 | Canon Kabushiki Kaisha | Recording apparatus with standby control for thermal head |
US5696547A (en) * | 1989-07-14 | 1997-12-09 | Canon Kabushiki Kaishi | Recording apparatus with auxilliary recording and method thereof |
US5712671A (en) * | 1988-07-01 | 1998-01-27 | Canon Kabushiki Kaisha | Thermal recording method and apparatus varying the number of auxiliary heating pulses based on the length of time between recording operations |
US6069643A (en) * | 1988-11-09 | 2000-05-30 | Canon Kabushiki Kaisha | Thermal Transfer recording apparatus and method to reduce ink sheet sticking |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58138169A (en) * | 1982-02-12 | 1983-08-16 | Hitachi Ltd | Method for controlling record of fast heat-sensitive facsimile |
JPS58211473A (en) * | 1982-06-04 | 1983-12-08 | Fuji Xerox Co Ltd | Printer driving device |
JPS59141872A (en) * | 1983-02-02 | 1984-08-14 | Fuji Xerox Co Ltd | Heat-sensitive recorder |
-
1985
- 1985-10-21 JP JP60233253A patent/JPS6294360A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58138169A (en) * | 1982-02-12 | 1983-08-16 | Hitachi Ltd | Method for controlling record of fast heat-sensitive facsimile |
JPS58211473A (en) * | 1982-06-04 | 1983-12-08 | Fuji Xerox Co Ltd | Printer driving device |
JPS59141872A (en) * | 1983-02-02 | 1984-08-14 | Fuji Xerox Co Ltd | Heat-sensitive recorder |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5712671A (en) * | 1988-07-01 | 1998-01-27 | Canon Kabushiki Kaisha | Thermal recording method and apparatus varying the number of auxiliary heating pulses based on the length of time between recording operations |
US5587733A (en) * | 1988-11-09 | 1996-12-24 | Canon Kabushiki Kaisha | Recording apparatus which avoids ink sheet sticking and image streaking |
US6069643A (en) * | 1988-11-09 | 2000-05-30 | Canon Kabushiki Kaisha | Thermal Transfer recording apparatus and method to reduce ink sheet sticking |
US5696547A (en) * | 1989-07-14 | 1997-12-09 | Canon Kabushiki Kaishi | Recording apparatus with auxilliary recording and method thereof |
US5187494A (en) * | 1989-07-19 | 1993-02-16 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus and method having preheating |
US5262799A (en) * | 1989-07-19 | 1993-11-16 | Canon Kabushiki Kaisha | Recording apparatus with auxiliary recording and method for same |
US5291219A (en) * | 1989-07-19 | 1994-03-01 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus having preheating |
US5231421A (en) * | 1989-07-31 | 1993-07-27 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus with delayed driving |
US5248996A (en) * | 1990-02-01 | 1993-09-28 | Canon Kabushiki Kaisha | Thermal transfer recording apparatus which avoids ink sheet sticking after recording data reception is interrupted |
US5533171A (en) * | 1992-03-18 | 1996-07-02 | Canon Kabushiki Kaisha | Image recording apparatus |
US5598190A (en) * | 1992-06-12 | 1997-01-28 | Canon Kabushiki Kaisha | Recording apparatus with standby control for thermal head |
Also Published As
Publication number | Publication date |
---|---|
JPH0465788B2 (en) | 1992-10-21 |
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