JPS602383A - Thermal recording system - Google Patents

Thermal recording system

Info

Publication number
JPS602383A
JPS602383A JP58111470A JP11147083A JPS602383A JP S602383 A JPS602383 A JP S602383A JP 58111470 A JP58111470 A JP 58111470A JP 11147083 A JP11147083 A JP 11147083A JP S602383 A JPS602383 A JP S602383A
Authority
JP
Japan
Prior art keywords
scanning line
image information
pulse
thermal recording
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.)
Pending
Application number
JP58111470A
Other languages
Japanese (ja)
Inventor
Haruhiko Moriguchi
晴彦 森口
Ren Suwai
スワイ・レン
Toshiji Inui
利治 乾
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP58111470A priority Critical patent/JPS602383A/en
Publication of JPS602383A publication Critical patent/JPS602383A/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
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315Typewriters 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
    • B41J2/32Typewriters 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
    • B41J2/35Typewriters 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
    • B41J2/355Control circuits for heating-element selection

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent white streaks from being generated between scanning lines, by impressing the preceding scanning line information on a head when the subsequent scanning line information is inputted with a delay of not less than a predetermined period of time, in a thermal recording system in which picture information is sequentially recorded for each scanning line. CONSTITUTION:A detecting circuit 9 measures the pulse gap of a scanning line synchronizing signal Q, detectes that the pulse gap is increased beyond a predetermined value, and sends a detection signal to a pulse-generating circuit 10. In response to this, the circuit 10 outputs a repetition command signal R to a sequence controller 8, then the controller 8 impresses a driving pulse on a thermal head 1, and impresses the picture information for the preceding scanning line on the head 1 by controlling a buffer memory 6 or 7. Accordingly, the picture information for the preceding scanning line is repeatedly recorded on a thermal recording paper 2, so that no white streak is generated.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、画情報な一走査線毎に順次配録するようにし
た感熱記録方式に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal recording method in which image information is sequentially recorded for each scanning line.

〔従来技術〕[Prior art]

従来より、多数の発熱素子を一列に配列して構成された
発熱体を有しこの発熱体に感熱記録媒体(例えばインク
ドナーフィルム、感熱記録紙)が摺接されるようになさ
れたサーマルヘッドを備え、このサーマルヘッドに一走
査綜毎の画情報を順次印加して、多数の発熱素子な画情
@に対応して選択的に発熱させるとともに〜サーマルヘ
ッドに対する1走査線毎の画情報の印加に同期して感熱
記録媒体をサーマルヘッドの発熱素子の配列方向く主走
査方向)に対し直角方向(副走査方向)に移送すること
にエリ、感熱記録媒体上に多数の走査線よりなる画像を
記録するようにした感熱記録装置が提案されている。
Conventionally, there has been a thermal head that has a heating element configured by arranging a large number of heating elements in a line, and a thermal recording medium (for example, an ink donor film, thermal recording paper) is brought into sliding contact with the heating element. In preparation, image information for each scanning line is sequentially applied to this thermal head to selectively generate heat according to image information such as a large number of heating elements, and image information for each scanning line is applied to the thermal head. By moving the thermal recording medium in a direction (sub-scanning direction) perpendicular to the arrangement direction of the heating elements of the thermal head (main scanning direction) in synchronization with A thermosensitive recording device for recording has been proposed.

第】図はこのような感熱記録装置のブロック図を示し、
サーマルヘッド1には感熱記録紙2がパックローラ3に
よって圧接され、このバククローラ3をステップモータ
4によって駆動することにより、感熱記録紙2が副走査
方向に移送されるようになっている。また制御回路5は
、入力される画情報Pの1走査線分の蓄えかつこれから
読出される走査線毎の画情報をサーマルヘッドlに印加
するためのバッファ・メモリ6゜7と、シーケンス・コ
ントローラ8とよりなる。
Figure 1 shows a block diagram of such a thermal recording device.
A thermal recording paper 2 is pressed against the thermal head 1 by a pack roller 3, and by driving this back crawler 3 with a step motor 4, the thermal recording paper 2 is transported in the sub-scanning direction. The control circuit 5 also includes a buffer memory 6.7 for storing input image information P for one scanning line and for applying image information for each scanning line to be read out to the thermal head 1, and a sequence controller. 8 and more.

シーケンス・コントローラ8は、x走IE+i91分の
画情報Pの入力に同期した走査線同期信号Qを受信し、
この同期信号QK同期させてバッファ・メモリ6.7を
制御し、サーマルヘッド1に対し駆動パルス信号Hな印
加し、かつパルスモータ4に対し制御パルスMを供給す
る。
The sequence controller 8 receives a scanning line synchronization signal Q synchronized with the input of the image information P for x-scan IE+i91,
In synchronization with this synchronization signal QK, the buffer memory 6.7 is controlled, a drive pulse signal H is applied to the thermal head 1, and a control pulse M is supplied to the pulse motor 4.

!2図IAFi走査線同期信号Qを示し、所定の時間間
隔Tを有する同期パルスql + qx 、qs・・・
・・・よりなり、この同期パルスqI +qz tql
 ・・・に同期して、バッファ・メモリ6.7が切換え
られ、また第2図Brc示すような駆動パルスh+ 、
 ht 、ha ・・・jりなるサーマルヘクト駆動信
号Hと、第2図Cに示すような制御パルスm、、ml 
、m3 ・・・よりなるモータ制御信号Mとがそれぞれ
サーマルヘッド1およびパルスモータ4にシーケンス・
コントローラ8から印加されるようになされている。こ
れに1って、いま同期パルスq1+q鵞 tqa ・・
・・・のパルス間隔Tを5 m5ec、とすれば、感熱
記録紙2上に例えば125μmの間隔を有する多数の走
査線をもって画像が感熱配録紙2上に記録される。
! Figure 2 shows the IAFi scan line synchronization signal Q, and synchronization pulses ql + qx, qs... with a predetermined time interval T.
...and this synchronization pulse qI +qz tql
..., the buffer memory 6.7 is switched, and drive pulses h+, as shown in FIG. 2 Brc,
ht, ha...j thermal hect drive signals H and control pulses m,, ml as shown in FIG. 2C
, m3 . . . are sent to the thermal head 1 and pulse motor 4 in sequence.
The voltage is applied from the controller 8. 1 is now synchronized pulse q1 + q tqa...
If the pulse interval T of .

ところで、入力される1走査線毎の画情報の時間間隔が
所定の間隔より増大した場合、すなわち、第3図Aに示
すように、同期パルスr1とr2 との間のパルス間隔
が時間Tより長い1′となった場合を考えると、それに
応じてサーマルヘッド駆動パルスh1 とり、とのパル
ス間隔およびモータ制御パルスm1 とm、とのパルス
間隔も第3囚B、Cに示されているように増大し、した
がって理論的には、感熱記録紙2上に記録される走査蔵
開の間隔は変化しないものと考えられるが、実際上、感
熱記録紙2に対する機械的な駆動伝達系の歪の存在に工
って、記録紙2の移送量がモータ制御信号Mに比例しな
くなり、走査線間の間隔が増大する傾向にある。
By the way, if the time interval of input image information for each scanning line increases beyond a predetermined interval, that is, as shown in FIG. Considering the case of a long 1', the pulse interval between the thermal head drive pulse h1 and the motor control pulse m1 and the pulse interval between the motor control pulses m1 and m will be changed accordingly as shown in the third graph B and C. Therefore, theoretically, it is considered that the interval between scanning and opening recorded on the thermal recording paper 2 does not change, but in reality, the distortion of the mechanical drive transmission system for the thermal recording paper 2 increases. Due to this, the amount of conveyance of the recording paper 2 is no longer proportional to the motor control signal M, and the interval between scanning lines tends to increase.

篤4図は、このような同期パルスq1 とqiのパルス
間隔の増大にもとづく走査線間の距離の増大を示す図で
ある。このように2本の走査線間の間隔が増大したとし
ても、次の走査線間の間隔はこれとは逆に減少するので
、全体として平均化されて大きな変化とはならないが、
走査線間の間隔が増大した部分においては、記録ドツト
間にスペースが生じ、これによって主走査方向の「白い
すじ」として眼に映じる。このような「白いすじ」は記
録された画像の品質を著しく損なうものである。
FIG. 4 is a diagram showing an increase in the distance between scanning lines due to an increase in the pulse interval between the synchronizing pulses q1 and qi. Even if the spacing between two scanning lines increases in this way, the spacing between the next scanning lines decreases, so it is averaged out as a whole and does not result in a large change.
In areas where the distance between scanning lines increases, spaces are created between recorded dots, which appear to the eye as "white streaks" in the main scanning direction. Such "white streaks" significantly impair the quality of recorded images.

〔発明の目的〕[Purpose of the invention]

よって本発明は、上述したような走査線間の間隔の増大
によって生じる「白いすじ」の発生を防止した感熱配録
方式を提供することを目的とする。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a heat-sensitive recording method that prevents the occurrence of "white streaks" caused by the increase in the spacing between scanning lines as described above.

〔発明の構成〕[Structure of the invention]

本発明は、J走査線毎の画情報の入力時間間隔を測定し
、この測定により先行走査線の画情報の入力後における
後続の走査線の画情報の入力が予め定められた時間より
遅延されたことを検知した場合、先行走査線の画情報を
サーマルヘクトに反復して印加することにより上記目的
を達成している。
The present invention measures the input time interval of image information for each J scanning line, and by this measurement, input of image information of a subsequent scanning line after inputting image information of a preceding scanning line is delayed from a predetermined time. When this is detected, the above object is achieved by repeatedly applying the image information of the previous scanning line to the thermal hect.

〔実施例〕〔Example〕

以下本発明の実施例を第5図および第6図を参照して詳
細に説明する。
Embodiments of the present invention will be described in detail below with reference to FIGS. 5 and 6.

第5図は本発明に係る感熱配録方式を適用された感熱記
録装置のブロック図である。なお、第5図においては、
ル】シ1との対応部分に同一の符号を付しであるが、制
御回路5が走査線向期消号Qのパルス間隔を測定し、こ
のパルス間隔が所定の間隔より増大したことを検知する
検知回路9と、この検知回路9による上記検知にもとづ
き、反復命令信号Rを発生するパルス発生回路10を有
する。第6図Bには反復命令信号Rが示されており、第
6図AK示す先行同期パルスqI と後続のq2との間
隔が所定の間隔Tより増大したことが検知回路9により
検知された場合、パルス発生回路10は先行走査線のた
めの同期パルスq、の入力後の予め定められた時間T1
経過後に反復命令信号パルスrlを発生スル。このパル
スr1はシーケンス・コントローラ8に入力され、こワ
vc工りシーケンス・コントローラ8がサーマルヘッド
IK対して第6図Cに示すような駆動パルスh′を印加
するとと4K、シーケンス・コントローラ8がバッファ
・メモリ6または7を制御して先行走査線の画情報をサ
ーマルヘッドIK印加させる。この操作により感熱記録
紙2上に先行走査線の画情報が反復して記録され、この
反復して配録された先行走査線と同一の画情報を有する
走査線によって前記した「白いすじ」を呈するスペース
が補充され、したがって「白いすじ」は消滅する。
FIG. 5 is a block diagram of a thermal recording apparatus to which the thermal recording method according to the present invention is applied. In addition, in Fig. 5,
The same reference numerals are given to the parts corresponding to C1, but the control circuit 5 measures the pulse interval of the scanning line timing signal Q and detects that this pulse interval has increased beyond a predetermined interval. and a pulse generation circuit 10 that generates a repetition command signal R based on the detection by the detection circuit 9. FIG. 6B shows a repeat command signal R, and when the detection circuit 9 detects that the interval between the preceding synchronization pulse qI and the subsequent q2 shown in FIG. , the pulse generating circuit 10 generates a predetermined time T1 after the input of the synchronizing pulse q for the preceding scanning line.
After the elapsed time, a repeat command signal pulse rl is generated. This pulse r1 is input to the sequence controller 8, and when the stiff vc sequence controller 8 applies a drive pulse h' as shown in FIG. 6C to the thermal head IK, the sequence controller 8 outputs 4K. The buffer memory 6 or 7 is controlled to apply the image information of the preceding scanning line to the thermal head IK. Through this operation, the image information of the previous scanning line is repeatedly recorded on the thermal recording paper 2, and the above-mentioned "white streak" is created by the scanning line having the same image information as the repeatedly recorded previous scanning line. The space that appears is refilled, and the "white streaks" therefore disappear.

なお、反復命令信号パルスr1の発生後なおも後続の同
期パルスq2が入力されない場合には、必要に応じて、
第6図Cに示すように、先行同期パルスq、の入力後の
予め定められた時間T2経過後にパルス発生回路10よ
0第2の反復命令信号パルスr、を発生し、これに↓リ
シーケンス・コントローラ8がサーマルヘッド1に対し
て駆動パルスh″を印加するとともに、バッファ・メモ
リ6またけ7より再度先行走査線の画情報をサーマルヘ
クト1に印加して、感熱記録紙2上に先行走査線の画情
報を記録してもよい。
Note that if the subsequent synchronization pulse q2 is not input after the generation of the repetition command signal pulse r1, as necessary,
As shown in FIG. 6C, after a predetermined time T2 has elapsed after the input of the preceding synchronization pulse q, the pulse generating circuit 10 generates a second repetitive command signal pulse r, and then performs a ↓ resequence.・The controller 8 applies a drive pulse h'' to the thermal head 1, and also applies the image information of the preceding scanning line from the buffer memory 6 to the thermal head 1 again to print the preceding scanning line on the thermal recording paper 2. Image information of scanning lines may also be recorded.

このように、先行走査線の画情報が感熱記録紙2上に二
度乃至数度反恨して記録された後、第61/Aに示す後
続の同期パルスqtが入力され4ば、これに応じてサー
マルヘッド駆動パルスh、およびモータ制御パルスm2
が発生し、バッファ・メモリ61だFi7よりサーマル
ヘッドに後続の走査線の画情報が送られ、感熱記録紙2
上に後続の走査線の画情報が記録される。
In this way, after the image information of the preceding scanning line is recorded twice or several times on the thermal recording paper 2, when the subsequent synchronizing pulse qt shown in No. 61/A is inputted, Accordingly, the thermal head drive pulse h and the motor control pulse m2
occurs, the image information of the subsequent scanning line is sent from the buffer memory 61 Fi7 to the thermal head, and the image information of the subsequent scanning line is sent to the thermal recording paper 2.
Image information for subsequent scanning lines is recorded on top.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明によれば、従来「白いすじ
」を生じたスペースに先行する走査線の画情報が反復し
て記録されるので、「白いすじ」は消滅し、記録された
画像の画質を向上させることができる。しかもこの場合
、「白いすじ」に相当するスペースに記録される画情報
が先行する走査線の画情報であるため、各走査線毎の画
IW報が所定の等間隔をもって入力された場合の画像に
比較して損色のない良g1v)記録画像を得ることがで
きる。
As explained above, according to the present invention, the image information of the scanning line preceding the space where the "white streak" conventionally occurred is repeatedly recorded, so the "white streak" disappears and the recorded image image quality can be improved. Moreover, in this case, since the image information recorded in the space corresponding to the "white stripe" is the image information of the preceding scanning line, the image when the image IW information for each scanning line is input at a predetermined equal interval It is possible to obtain a good g1v) recorded image with no color loss compared to the above.

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

第1図は従来の感熱記録装置のブロック図、第2図A−
Cおよび第3図A−Cけその動作の説明図、第4図は同
期パルス間隔に対する走査線の間隔の変動を説明する曲
線図、第5図は本発明に係る感熱記録方式を適用した感
熱記録装置のブロック図、第6図A−Dはその動作の説
明図である。 】・・・サーマルヘッド、2・・・感熱記録紙、3・・
−バククローラ、4・−・パルスモータ、5・・・制御
回路、 6.7・・・バッファ・メモリ、8・・・シー
ケンス・コントローラ、9−・検知00Wx、10−・
・パルス発生回路。 第2図 第3図 第4図 同期ノCルス聞隔 (msec) 第5図
Figure 1 is a block diagram of a conventional thermal recording device, Figure 2A-
FIG. 4 is a curve diagram illustrating variation in scanning line interval with respect to synchronization pulse interval, and FIG. The block diagram of the recording apparatus and FIGS. 6A to 6D are explanatory diagrams of its operation. ]...Thermal head, 2...Thermal recording paper, 3...
- Back crawler, 4... Pulse motor, 5... Control circuit, 6.7... Buffer memory, 8... Sequence controller, 9-... Detection 00Wx, 10-...
・Pulse generation circuit. Figure 2 Figure 3 Figure 4 Synchronization clock interval (msec) Figure 5

Claims (1)

【特許請求の範囲】 多数の発熱素子を一列に配列して構成された発熱体を有
し該発熱体に感熱記録媒体が摺接されるようになされた
サーマルヘッドに対して1走査線毎の画情報を順次印加
し、前記多数の発熱素子を前記画情報に対応して選択的
に発熱させるとともに、前記1走査線毎の画情報の印加
に同期して前記感熱記録媒体を前記サーマルヘッドの発
熱素子の配列方向に対し直角方向に移送することにより
、前記感熱記録媒体上に前記発熱素子の配列方向と平行
な多数の走査線よりなる画像を記録するようにした感熱
記録方式において、 前!e l走査線毎の画情報の入−力時間間隔を611
1定し、該測定により先行走査線の画情報の入力後にお
ける後続の走査線の画情報の入力が予め定められた時間
より遅延されたことを検知した場合、前記先行走査線の
画情報を前記サーマルヘッドに印加して、該先行走査線
の画情報を前記感熱記録媒体上に反復して記録すること
を特徴とする感熱記録方式。
[Claims] For a thermal head that has a heating element configured by arranging a large number of heating elements in a line, and a heat-sensitive recording medium is brought into sliding contact with the heating element, a Image information is sequentially applied to cause the plurality of heating elements to generate heat selectively in accordance with the image information, and the thermal recording medium is moved to the thermal head in synchronization with the application of the image information for each scanning line. In a thermal recording method, an image consisting of a large number of scanning lines parallel to the arrangement direction of the heating elements is recorded on the thermal recording medium by moving the heating elements in a direction perpendicular to the arrangement direction of the heating elements. e l Set the input time interval of image information for each scanning line to 611
1, and if it is detected by the measurement that the input of the image information of the subsequent scanning line after inputting the image information of the preceding scanning line is delayed by a predetermined time, the image information of the preceding scanning line is A thermal recording method characterized in that image information of the preceding scanning line is repeatedly recorded on the thermal recording medium by applying a voltage to the thermal head.
JP58111470A 1983-06-21 1983-06-21 Thermal recording system Pending JPS602383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58111470A JPS602383A (en) 1983-06-21 1983-06-21 Thermal recording system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58111470A JPS602383A (en) 1983-06-21 1983-06-21 Thermal recording system

Publications (1)

Publication Number Publication Date
JPS602383A true JPS602383A (en) 1985-01-08

Family

ID=14562056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58111470A Pending JPS602383A (en) 1983-06-21 1983-06-21 Thermal recording system

Country Status (1)

Country Link
JP (1) JPS602383A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524243A (en) * 1990-09-07 1993-02-02 Tohoku Ricoh Co Ltd Thermal printer and printing method thereby
JPH063642U (en) * 1991-09-19 1994-01-18 日本電気ホームエレクトロニクス株式会社 Thermal printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524243A (en) * 1990-09-07 1993-02-02 Tohoku Ricoh Co Ltd Thermal printer and printing method thereby
JPH063642U (en) * 1991-09-19 1994-01-18 日本電気ホームエレクトロニクス株式会社 Thermal printer

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