JPS635968A - Printer device - Google Patents

Printer device

Info

Publication number
JPS635968A
JPS635968A JP15240386A JP15240386A JPS635968A JP S635968 A JPS635968 A JP S635968A JP 15240386 A JP15240386 A JP 15240386A JP 15240386 A JP15240386 A JP 15240386A JP S635968 A JPS635968 A JP S635968A
Authority
JP
Japan
Prior art keywords
voltage
output
temperature
head
converting
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
Application number
JP15240386A
Other languages
Japanese (ja)
Other versions
JP2600652B2 (en
Inventor
Yasuki Matsumoto
松本 泰樹
Haruo Yamashita
春生 山下
Yoshito Saji
義人 佐治
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP61152403A priority Critical patent/JP2600652B2/en
Publication of JPS635968A publication Critical patent/JPS635968A/en
Application granted granted Critical
Publication of JP2600652B2 publication Critical patent/JP2600652B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B41J2/36Print density control

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To greatly widen the temperature range in which intermediate gradations can be reproduced, by switching a table and the voltage of a head power source by an input-output characteristic converting means and a voltage-regulating means according to gradation data and an output from an A/D converting means. CONSTITUTION:Gradation level data inputted are read through a first port 6, and are stored. A digital value obtained by detecting the temperature in the vicinity of a thermal head by a temperature-detecting means 13 and digitizing the resultant temperature signal by an A/D converting means 14 is read through a second port 7, and is stored. An address in a voltage setting table (f) developed in a second RAM 5 is given according to the temperature level detected, thereby obtaining voltage data A for a head power source 15. The data A is outputted to a D/A converting means 16 through a fourth port 9, the voltage of the head power source is varied, and the varied voltage is applied to a thermal head 12. An address in a two-dimensional gammacorrection table f' developed in a second RAM 5 is given according to a gradation level and the temperature level, thereby obtaining pulse width data B, which is outputted to a pulse-generating means 10 through a third port 8. With this arrangement, it is possible to greatly widen the temperature range in which temperature correction can be achieved.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はサーマルヘッドを用い中間調記録を行うプリン
タ装置の記録特性の温度補正に関するものであり、CR
Tのノ・−トコピー装置等に広く応用できるものである
、 従来の技術 中間調記録を行うプリンタ装置として、主にサーマルプ
リンタ装置が挙げられる。サーマルプリンタ装置は、複
数の発熱体を集積したサーマルヘッドを有し、各発熱体
を選択的に通電し発熱させることにより感熱紙あるいは
感熱転写紙から受像体に画像等を記録するもので、中間
調記録により行っているが、記録パルス幅と記録濃度の
関係は非線形であるだめ忠実な中間記録を行うだめには
一般にr補正と呼ぶ補正を行う必要がある。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to temperature correction of the recording characteristics of a printer device that performs halftone recording using a thermal head.
Thermal printers are mainly used as conventional printers that perform halftone recording, which can be widely applied to T. note copying devices and the like. A thermal printer device has a thermal head that integrates multiple heating elements, and records images, etc. from thermal paper or thermal transfer paper onto an image receptor by selectively energizing each heating element to generate heat. However, since the relationship between recording pulse width and recording density is non-linear, it is necessary to perform a correction generally called r correction in order to perform faithful intermediate recording.

まだ、サーマルヘッドを用いた時の記録濃度はヘッド近
傍温度に依存するためヘッド近傍温度による補正も必要
になる。
However, since the recording density when using a thermal head depends on the temperature near the head, correction based on the temperature near the head is also required.

従来、r補正と環境温度補正を独立して行っているもの
や、複数レベルの環境温度におけるr補正のROMテー
ブル群を設けておき環境温度によりROMテーブル群の
出力を選択するもの(特開昭58−164368号公報
)が提案されている。
Conventionally, there are methods that perform r correction and environmental temperature correction independently, and methods that provide a ROM table group for r correction at multiple levels of environmental temperature and select the output of the ROM table group depending on the environmental temperature (Japanese Patent Application Laid-open No. 58-164368) has been proposed.

第30図は従来例のブロック図である。60は環境温度
をn個のレベルに群別し、各群毎にROMテーブル50
1.502 、 ・・・・=・、50nのn個のROM
テーブルから構成されているROMテーブル群、61は
サーマルヘッド近傍の温度を検出する温度検出器、52
は温度検出器61の出力をA/D変換するA/D変換器
、63は温度検出器51が検出したサーマルヘッド近傍
の温度に基づき、ROMテーブル群6oからそのサーマ
ルヘッド近傍の温度レベルに対応するROMテーブルを
選択し出力するテーブル選択回路である。各ROMテー
ブルには、そのサーマルヘッド近傍の温度しベルおいて
、階調レベルとその階調レベルに対応する記録濃度を得
るだめにサーマルヘッドに通電するパルス幅等の関係が
設定されており、各ROMテーブルには階調レベルがア
ドレスとして入力されている。従って、階調レベル信号
aが入力されると各ROMテーブルからは各サーマルヘ
ッド近傍の温度のr補正された記録パルス幅データが出
力され、温度検知器51が検出したサーマルヘッド近傍
の温度データbに基づき、テーブル選択回路53は前述
の各ROMテーブルの出力を選択することによってr補
正とサーマルヘッド近傍の温度による補正を行っていた
FIG. 30 is a block diagram of a conventional example. 60 groups the environmental temperature into n levels, and stores a ROM table 50 for each group.
1.502, ...=..., 50n n ROMs
A ROM table group consisting of tables, 61 a temperature detector for detecting the temperature near the thermal head, 52
63 is an A/D converter that A/D converts the output of the temperature detector 61, and 63 corresponds to the temperature level near the thermal head from the ROM table group 6o based on the temperature near the thermal head detected by the temperature detector 51. This is a table selection circuit that selects and outputs a ROM table. In each ROM table, the relationship between the gradation level and the pulse width to be applied to the thermal head in order to obtain the recording density corresponding to that gradation level is set based on the temperature in the vicinity of the thermal head. A gradation level is input as an address to each ROM table. Therefore, when the gradation level signal a is input, each ROM table outputs recording pulse width data r-corrected for the temperature near each thermal head, and the temperature data b near the thermal head detected by the temperature detector 51 Based on this, the table selection circuit 53 performs r correction and correction based on the temperature near the thermal head by selecting the output of each of the aforementioned ROM tables.

発明が解決しようとする問題点 第4図は従来例のプリンタ装置におけるサーマルヘッド
近傍の温度が高温時と常温時と低温時でのパルス幅と記
録濃度との関係を示したものである。従来例ではサーマ
ルヘッドに印加する電源電圧を単一で行っており、その
単一のサーマルヘッドへの印加電圧における階調レベル
とその階調レベルに対応する記録濃度を得るためにザー
マルヘ6 ベージ ソドに通電するパルス幅等の関係を各ROMテーブルに
設定していた。従って、第4図に示すようにサーマルヘ
ッド近傍の温度が高温になればなるほど、記録濃度を縦
軸パルス幅を横軸とする1曲線は傾きの急なものとなり
階調数は減少する傾向で、ある温度以上では中間調記録
として必要な階調数が再現できないことになる。また、
低温になればなるほど、1曲線は傾きのなだらかなもの
と々り印加パルス幅に対応する記録濃度は低減する傾向
にあり、ある温度以下では最大パルス幅を与えても常温
時での最大記録濃度を確保するのは不可能となっていた
Problems to be Solved by the Invention FIG. 4 shows the relationship between pulse width and recording density when the temperature near the thermal head in a conventional printer device is high, normal, and low. In the conventional example, a single power supply voltage is applied to the thermal head, and in order to obtain the gradation level at the voltage applied to the single thermal head and the recording density corresponding to the gradation level, the thermal Relationships such as pulse width for energization were set in each ROM table. Therefore, as shown in Figure 4, as the temperature near the thermal head becomes higher, the slope of the curve with recording density on the vertical axis and pulse width on the horizontal axis becomes steeper, and the number of gradations tends to decrease. , above a certain temperature, the number of gradations required for halftone recording cannot be reproduced. Also,
As the temperature decreases, the slope of the first curve becomes gentler, and the recording density corresponding to the applied pulse width tends to decrease.Below a certain temperature, even if the maximum pulse width is applied, the maximum recording density at room temperature will decrease. It had become impossible to secure.

問題点を解決するだめの手段 本発明では上記問題点を解決するだめに、サーマルヘッ
ドと、記録パルスを与えるパルス発生手段と、前記パル
ス発生手段の記録パルスにより前記サーマルヘッドの発
熱素子に供給する電力を制御するヘッド駆動手段と、前
記ヘッド駆動手段に複数段階の電圧を印加するヘッド電
源と、前記ヘッド電源の電圧を変化させる電圧可変手段
と、前7″−7゛ 記サーマルヘッド近傍の温度を検出する温度検出手段と
、前記温度検出手段の出力をA/D変換するA/D変換
手段と、前記ヘッド電源の電圧における階調データに対
する記録パルス幅の関係のテーブルを前記サーマルヘッ
ド近傍の複数の異なる温度ごとに1個以上のROMまた
は1個以上のRAMに設定した入出力特性変換手段とを
用い、前記階調データと前記A/D変換手段の出力によ
り前記入出力特性変換手段と前記電圧可変手段により前
記テーブルと前記ヘッド電源の電圧を切り換える。
Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a thermal head, a pulse generating means for supplying a recording pulse, and a recording pulse from the pulse generating means supplies the heating element of the thermal head. a head driving means for controlling electric power; a head power supply for applying a plurality of voltage levels to the head driving means; a voltage variable means for changing the voltage of the head power supply; temperature detecting means for detecting temperature, A/D converting means for A/D converting the output of the temperature detecting means, and a table of the relationship between the recording pulse width and the gradation data at the voltage of the head power source near the thermal head. input/output characteristic converting means set in one or more ROMs or one or more RAMs for each of a plurality of different temperatures; The voltage of the table and the head power supply is switched by the voltage variable means.

作  用 本発明は上記の手段を用いることにより、サーマルヘッ
ド近傍の温度が高温時ではヘッド電源の電圧を下げ、R
OMテーブルも同時に高温用のものに切り換えることに
より、記録パルス幅に対する記録濃度の1曲線の傾きは
、おだやかなものになり階調数を増加することができる
。また、サーマルヘッド近傍の温度が低温時ではヘッド
電源の電圧を上げ、ROMテーブルも同時に低温用に切
り換えることにより、ある温度以下では最大・(ルス幅
を与えても常温時での最大記録濃度を確保するのは不可
能となっていたが、1曲線の傾きは急なものとなり印加
パルス幅に対応する記録濃度は増加する傾向になり最大
濃度を確保することができる。すなわち、中間調を再現
できる温度範囲を大幅に広げることができる。
By using the above means, the present invention lowers the voltage of the head power supply when the temperature near the thermal head is high, and reduces the R
By simultaneously switching the OM table to one for high temperatures, the slope of a curve of recording density versus recording pulse width becomes gentler, and the number of gradations can be increased. In addition, when the temperature near the thermal head is low, the voltage of the head power supply is increased, and the ROM table is also switched to low temperature mode at the same time. However, the slope of the first curve becomes steeper, and the recording density corresponding to the applied pulse width tends to increase, making it possible to ensure the maximum density.In other words, it is possible to reproduce halftones. The temperature range that can be used can be greatly expanded.

実施例 本発明の実施例について図を用いて説明する。Example Embodiments of the present invention will be described with reference to the drawings.

第1図は本発明のプリンタ装置の実施例のブロック図で
ある。
FIG. 1 is a block diagram of an embodiment of a printer device of the present invention.

1はCPU2 、ROM3 、第一のRAM4 、第二
のRAM6 、第一のポート6、第二のポート7゜第三
のポート8.第四のポート9から構成されたマイクロコ
ンピュータであり、aはアドレスバス、dはデータバス
である。1oは記録パルスを与えるパルス発生手段、1
1はサーマルヘッドの発熱素子に供給する電力を制御す
るヘッド駆動手段、12はサーマルヘッド、13は?−
マルヘット近傍の温度を検出する温度検出手段、14は
温度検9ベーン゛ 山手段13の出力をA/D変換するA/D変換手段、1
6はヘッド駆動手段11に複数段階の電圧を印加するヘ
ッド電源、16は第四のポート9の゛出力をD / A
変換するD/A変換手段、17はD/A変換手段16の
出力によりヘッド駆動手段11に与えるヘッド電源16
の電圧を可変する電圧可変手段である。ROM5には画
像を記録するためのプログラムと、ヘッド電源16の複
数段階の電圧における階調データに対する記録パルス幅
の関係をサーマルヘッド近傍の複数の異なる温度ごとに
設定され、また、サーマルヘッド近傍の温度に対するヘ
ッド電源16の複数段階の電圧との関係が設定されてい
る。
1 is a CPU 2, a ROM 3, a first RAM 4, a second RAM 6, a first port 6, a second port 7, a third port 8. This is a microcomputer consisting of a fourth port 9, where a is an address bus and d is a data bus. 1o is a pulse generating means for providing recording pulses, 1
1 is a head driving means for controlling the power supplied to the heating element of the thermal head, 12 is the thermal head, and 13 is ? −
Temperature detection means for detecting the temperature in the vicinity of Marhet; 14 is an A/D conversion means for A/D converting the output of the temperature detection nine-vane mountain means 13;
6 is a head power supply that applies multiple levels of voltage to the head driving means 11; 16 is a D/A for the output of the fourth port 9;
D/A converting means 17 is a head power supply 16 that supplies the head driving means 11 with the output of the D/A converting means 16.
This is a voltage variable means for varying the voltage of. The ROM 5 contains a program for recording images, and the relationship between the recording pulse width and the gradation data at multiple voltage levels of the head power supply 16 is set for each of a plurality of different temperatures near the thermal head. A relationship between multiple voltage levels of the head power supply 16 and temperature is set.

前述のマイクロコンピュータのCPU2は、ROM3に
書きこまれているプログラムによって、第一のRAM4
をスタックやワークエリア等として使用し命令を実行す
る。第2図のフローチャートに示すように、CPU2は
、ROM5内に設定記憶されている情報に基づき第二の
RAM5中に各サーマルヘッド近傍の温度レベルとその
温度し1o“−ジ ベル時に印加するヘッド電源の電圧との電圧設定テーブ
ルfと、前述した各サーマルヘッド近傍の温度レベル毎
のヘッド電源の電圧に応じた記録濃度とパルス幅の二次
元の!補正テーブルf′を作成し、その後、次のシーケ
ンスで各画素ごとの処理を行い画像の記録を行う。
The CPU 2 of the microcomputer mentioned above uses the first RAM 4 according to the program written in the ROM 3.
Executes instructions by using it as a stack, work area, etc. As shown in the flowchart of FIG. 2, the CPU 2 stores the temperature level near each thermal head and the temperature in the second RAM 5 based on the information set and stored in the ROM 5. A voltage setting table f with the voltage of The image is recorded by processing each pixel in sequence.

まず、他の機器からや画素データの前処理から入力され
た階調レベルデータを第一のポート6から読みこし又と
して一時記憶する。また、温度検出手段13により検出
したサーマルヘッド近傍の温度をA/D変換手段14で
ディジタル値にしだものを第二のポート7から読みこみ
Yとして一時記憶する。温度レベルに対応して第二のR
AM5中に展開された電圧設定テーブルfのアドレスを
与え、ヘッド電源16の電圧データAを得、第四のポー
ト9からD/A変換手段16へ出力し、この電圧データ
Aによりヘッド電源の電圧を可変しサーマルヘッド12
に印加する。また、前述の階調レベルと温度レベルに対
応して第二のRAM5中に展開された二次元のr補正テ
ーブルf′のアド11 ′−ル スを与え、温度レベルと電圧データAにおけるパルス幅
データBを得、第三のポート8からパルス発生手段10
へ出力する。
First, gradation level data input from other devices or from preprocessing of pixel data is read out from the first port 6 and temporarily stored. Further, the temperature in the vicinity of the thermal head detected by the temperature detection means 13 is converted into a digital value by the A/D conversion means 14, which is read from the second port 7 and temporarily stored as Y. The second R corresponds to the temperature level.
Give the address of the voltage setting table f developed in AM5, obtain the voltage data A of the head power supply 16, output it from the fourth port 9 to the D/A conversion means 16, and use this voltage data A to set the voltage of the head power supply. The thermal head 12
to be applied. Further, the adder 11' of the two-dimensional r correction table f' developed in the second RAM 5 corresponding to the gradation level and temperature level described above is given, and the pulse width data at the temperature level and voltage data A is given. B is obtained, and the pulse generating means 10 is obtained from the third port 8.
Output to.

本実施例では、説明を容易にするために第一のRAMと
第二のRAMを備えだものを挙げだが、RAMの容量さ
え許せば同一のRAMを分割使用してもよい。また、本
実施例では、マイクロコンピュータを用いソフトウェア
によりr補正及び温度補正を行っているが、ハードウェ
アによる補正も十分に可能である。
In this embodiment, for ease of explanation, an example is shown in which a first RAM and a second RAM are provided, but the same RAM may be divided and used as long as the RAM capacity allows. Further, in this embodiment, r correction and temperature correction are performed by software using a microcomputer, but correction by hardware is also fully possible.

発明の効果 以上、説明してきたように、中間調記録を行うサーマル
プリンタにおいて、本発明によればサーマルヘッド近傍
の温度が上昇あるいは下降し記録パルス幅に対する濃度
の関係が変化すると、その変化に応じて補正曲線とヘッ
ドに印加する電圧を変えることにより、温度補正できる
温度の範囲を大幅に広げることができ、中間調全域にわ
たって正確な温度補正を極めて簡単な構成で低コストに
実現することができる〇
Effects of the Invention As described above, in a thermal printer that performs halftone recording, according to the present invention, when the temperature near the thermal head rises or falls and the relationship between the density and the recording pulse width changes, the temperature can be adjusted according to the change. By changing the correction curve and the voltage applied to the head, the range of temperatures that can be corrected can be greatly expanded, making it possible to achieve accurate temperature correction across the entire halftone range with an extremely simple configuration and at low cost. 〇

【図面の簡単な説明】 第1図は本発明の一実施例におけるプリンタ装置のブロ
ック図、第2図は同プリンタ装置の処理内容のフローチ
ャニド、第3図は従来例におけるプリンタ装置のブロッ
ク図、第4図は同プリンタ装置のサーマルヘッド近傍の
温度が高温時と常温時におけるパルス幅と記録濃度との
関係を示しだ図である。 1・・・・・・マイクロコンピュータ、10・・・・・
・ノ(ルス発生手段、11・・・・・・ヘッド駆動手段
、12・・・・・・サーマルヘッド、13・・・・・温
度検出手段、14・・・・・A/D変換手段、16・・
・・へ、ンド電源、16・・・・・D/A変換手段、1
7・・・・・・電圧可変手段。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第2
図 TART 2主に電工熱 ;又元めと フ)t4’とう)ミスさε′リフ− ガク洗み )(−(F)(+)) −くワレN−)ト アータ挽す込与 γ−ヒ(ポート(2)) フ)し A、f(Y) 3図 窮4図
[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram of a printer device according to an embodiment of the present invention, FIG. 2 is a flowchart of processing contents of the same printer device, and FIG. 3 is a block diagram of a printer device in a conventional example. FIG. 4 is a diagram showing the relationship between pulse width and recording density when the temperature near the thermal head of the same printer is high and at room temperature. 1...Microcomputer, 10...
・No(lux generation means, 11...Head driving means, 12...Thermal head, 13...Temperature detection means, 14...A/D conversion means, 16...
...to, power supply, 16...D/A conversion means, 1
7... Voltage variable means. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure TART 2 Mainly electrician heat; H (Port (2)) F) A, f (Y) Figure 3 Figure 4

Claims (3)

【特許請求の範囲】[Claims] (1)サーマルヘッドと、記録パルスを与えるパルス発
生手段と、前記パルス発生手段の記録パルスにより前記
サーマルヘッドの発熱素子に供給する電力を制御するヘ
ッド駆動手段と、前記ヘッド駆動手段に複数段階の電圧
を印加するヘッド電源と、前記ヘッド電源の電圧を切り
換える電圧切換手段と、前記サーマルヘッド近傍の温度
を検出する温度検出手段と、前記温度検出手段の出力を
A/D変換するA/D変換手段と、前記ヘッド電源の所
定の電圧における階調データと記録パルス幅の関係のテ
ーブルを前記サーマルヘッド近傍の複数の異なる温度ご
とに1個以上のROMまたは1個以上のRAMに設定し
た入出力特性変換手段とを備え、前記階調データと前記
A/D変換手段の出力により前記入出力特性変換手段と
前記電圧切換手段により前記テーブルと前記ヘッド電源
の電圧を切り換えることを特徴とするプリンタ装置。
(1) A thermal head, a pulse generating means for applying recording pulses, a head driving means for controlling the electric power supplied to the heating element of the thermal head by the recording pulses of the pulse generating means, and a plurality of steps for the head driving means. A head power supply for applying a voltage, a voltage switching means for switching the voltage of the head power supply, a temperature detection means for detecting the temperature near the thermal head, and an A/D conversion for A/D converting the output of the temperature detection means. input/output means for setting a table of the relationship between gradation data and recording pulse width at a predetermined voltage of the head power source in one or more ROMs or one or more RAMs for each of a plurality of different temperatures near the thermal head; A printer device comprising a characteristic converting means, wherein voltages of the table and the head power source are switched by the input/output characteristic converting means and the voltage switching means according to the gradation data and the output of the A/D converting means. .
(2)電圧切換手段はROMまたはRAMにより構成さ
れた電圧設定手段と、この電圧設定手段の出力をD/A
変換するD/A変換手段と、このD/A変換手段の出力
によりヘッド電源の電圧を可変する電圧可変手段とを備
え、前記A/D変換手段の出力の一部あるいは全部を前
記電圧設定手段に、階調データと前記A/D変換手段の
出力を入出力特性変換手段に与えることを特徴とする特
許請求の範囲第1項記載のプリンタ装置。
(2) The voltage switching means includes a voltage setting means constituted by ROM or RAM, and the output of this voltage setting means is D/A.
D/A converting means for converting, and voltage variable means for varying the voltage of the head power supply by the output of the D/A converting means, and a part or all of the output of the A/D converting means is controlled by the voltage setting means. 2. The printer apparatus according to claim 1, wherein the gradation data and the output of the A/D converting means are provided to input/output characteristic converting means.
(3)CPU、ROM、RAM、入出力ポートからなる
マイクロコンピュータを有し、電圧切換手段は前記マイ
クロコンピュータのメモリとして割当てられた電圧設定
手段と、この電圧設定手段の出力をD/A変換するD/
A変換手段と、このD/A変換手段の出力によりヘッド
電源の電圧を可変する電圧可変手段とを備え、入出力特
性変換手段を前記マイクロコンピュータのメモリとして
割当て、前記入出力ポートから読み取った階調データと
前記A/D変換手段の出力からソフトウェアにより前記
電圧設定手段と前記入出力特性変換手段のそれぞれにア
ドレスを与えテーブルを参照することを特徴とする特許
請求の範囲第2項記載のプリンタ装置。
(3) It has a microcomputer consisting of a CPU, ROM, RAM, and input/output ports, and the voltage switching means converts the voltage setting means assigned as the memory of the microcomputer and the output of this voltage setting means from D/A. D/
A conversion means, and a voltage variable means for varying the voltage of the head power supply by the output of the D/A conversion means, the input/output characteristic conversion means is allocated as the memory of the microcomputer, 3. The printer according to claim 2, wherein addresses are given to each of the voltage setting means and the input/output characteristic converting means by software from the output of the A/D converting means and reference data to a table. Device.
JP61152403A 1986-06-27 1986-06-27 Printer device Expired - Fee Related JP2600652B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61152403A JP2600652B2 (en) 1986-06-27 1986-06-27 Printer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61152403A JP2600652B2 (en) 1986-06-27 1986-06-27 Printer device

Publications (2)

Publication Number Publication Date
JPS635968A true JPS635968A (en) 1988-01-11
JP2600652B2 JP2600652B2 (en) 1997-04-16

Family

ID=15539750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61152403A Expired - Fee Related JP2600652B2 (en) 1986-06-27 1986-06-27 Printer device

Country Status (1)

Country Link
JP (1) JP2600652B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4864458B2 (en) * 2003-12-12 2012-02-01 シチズンホールディングス株式会社 Exposure equipment
JP2014008604A (en) * 2012-06-27 2014-01-20 Canon Inc Thermal printer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6168267A (en) * 1984-09-12 1986-04-08 Fujitsu Kiden Ltd Controlling system for thermal printer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6168267A (en) * 1984-09-12 1986-04-08 Fujitsu Kiden Ltd Controlling system for thermal printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4864458B2 (en) * 2003-12-12 2012-02-01 シチズンホールディングス株式会社 Exposure equipment
JP2014008604A (en) * 2012-06-27 2014-01-20 Canon Inc Thermal printer

Also Published As

Publication number Publication date
JP2600652B2 (en) 1997-04-16

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