JPH0362845U - - Google Patents
Info
- Publication number
- JPH0362845U JPH0362845U JP12282789U JP12282789U JPH0362845U JP H0362845 U JPH0362845 U JP H0362845U JP 12282789 U JP12282789 U JP 12282789U JP 12282789 U JP12282789 U JP 12282789U JP H0362845 U JPH0362845 U JP H0362845U
- Authority
- JP
- Japan
- Prior art keywords
- density gradation
- control type
- thermal printer
- type thermal
- gradation control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims 6
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Fax Reproducing Arrangements (AREA)
Description
第１図は、本考案の一実施例による濃度階調制
御型サーマルラインプリンタの主要な回路構成を
示すブロツク図、第２図は、実施例の作用を説明
するための各部の信号のタイミング図、第３図は
、実施例の作用を説明するためのヘツド電圧デユ
ーテイ比調整を示す図、第４図は、濃度−通電時
間特性曲線の非線形性を補正するために設定され
る相対デユーテイ比データの一例を示す図、およ
び、第５図は、濃度階調制御方式における濃度−
通電時間特性曲線を示す図である。
１０……サーマルラインヘツド、１２……駆動
トランジスタ、２４……抵抗値レジスタ、２５…
…サーミスタ、３０……通電時間制御部、３２…
…特性曲線補正メモリ、３６……ＬＵＴ、３８…
…デユーテイ比制御回路。
Fig. 1 is a block diagram showing the main circuit configuration of a density gradation control type thermal line printer according to an embodiment of the present invention, and Fig. 2 is a timing diagram of signals of each part to explain the operation of the embodiment. , FIG. 3 is a diagram showing head voltage duty ratio adjustment for explaining the operation of the embodiment, and FIG. 4 is a diagram showing relative duty ratio data set to correct the nonlinearity of the concentration-current application time characteristic curve. A diagram showing an example of the density gradation control method and FIG.
FIG. 3 is a diagram showing an energization time characteristic curve. 10...Thermal line head, 12...Drive transistor, 24...Resistance value register, 25...
...Thermistor, 30... Energization time control section, 32...
...Characteristic curve correction memory, 36...LUT, 38...
...Duty ratio control circuit.
Claims (1)
で対応する複数の発熱抵抗素子を単位通電サイク
ルの整数倍の時間だけ通電させることにより各画
素に所定の濃度階調を与えるようにした濃度階調
制御型のサーマルプリンタにおいて、 前記複数の発熱抵抗素子の全体的な抵抗値のデ
ータを与える抵抗値データ保持手段と、 前記抵抗値データ保持手段からの抵抗値データ
に基づいて、単位通電サイクル内に前記複数の発
熱抵抗素子に印加される電圧のデユーテイ比を調
整する手段と、 を具備することを特徴とする濃度階調制御型サー
マルプリンタ。 (2) １つの印画ライン上の複数の画素に１対１
で対応する複数の発熱抵抗素子を単位通電サイク
ルの整数倍の時間だけ通電させることにより各画
素に所定の濃度階調を与えるようにした濃度階調
制御型のサーマルプリンタにおいて、 通電時間−濃度特性曲線の非線形性を補正する
ための各単位通電サイクル毎のデユーテイ比のデ
ータを与える特性曲線補正データ保持手段と、 前記特性曲線補正データ保持手段からのデユー
テイ比データに応じて、単位通電サイクル内に前
記複数の発熱抵抗素子に印加される電圧のデユー
テイ比を変える手段と、 を具備することを特徴とする濃度階調制御型サー
マルプリンタ。 (3) １つの印画ライン上の複数の画素に１対１
で対応する複数の発熱抵抗素子を単位通電サイク
ルの整数倍の時間だけ通電させることにより各画
素に所定の濃度階調を与えるようにした濃度階調
制御型のサーマルプリンタにおいて、 サーマルヘツドの温度を検出するヘツド温度検
出手段と、 前記ヘツド温度検出手段からの温度データに応
じて、単位通電サイクル内に前記複数の発熱抵抗
素子に印加される電圧のデユーテイ比を変える手
段と、 を具備することを特徴とする濃度階調制御型サー
マルプリンタ。[Claims for Utility Model Registration] (1) One-to-one for multiple pixels on one printing line
In a density gradation control type thermal printer in which a predetermined density gradation is given to each pixel by energizing a plurality of corresponding heating resistors for a time that is an integral multiple of a unit energization cycle, the plurality of heating resistors resistance value data holding means for providing data on the overall resistance value of the element; and a voltage applied to the plurality of heat generating resistive elements within a unit energization cycle based on the resistance value data from the resistance value data holding means. A density gradation control type thermal printer comprising: means for adjusting a duty ratio; (2) One-to-one for multiple pixels on one print line
In a density gradation control type thermal printer in which a predetermined density gradation is given to each pixel by energizing a plurality of corresponding heating resistive elements for a time that is an integral multiple of a unit energization cycle, the energization time-density characteristic characteristic curve correction data holding means for providing duty ratio data for each unit energization cycle to correct nonlinearity of the curve; A density gradation control type thermal printer, comprising: means for changing the duty ratio of the voltage applied to the plurality of heating resistive elements. (3) One-to-one for multiple pixels on one print line
In a density gradation control type thermal printer in which a predetermined density gradation is given to each pixel by energizing a plurality of corresponding heating resistive elements for a time that is an integral multiple of a unit energization cycle, the temperature of the thermal head can be controlled. head temperature detection means for detecting the head temperature; and means for changing the duty ratio of the voltage applied to the plurality of heating resistor elements within a unit energization cycle according to the temperature data from the head temperature detection means. Features density gradation control type thermal printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12282789U JPH0362845U (en) | 1989-10-20 | 1989-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12282789U JPH0362845U (en) | 1989-10-20 | 1989-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0362845U true JPH0362845U (en) | 1991-06-19 |
Family
ID=31670822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12282789U Pending JPH0362845U (en) | 1989-10-20 | 1989-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0362845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079882A (en) * | 2012-10-12 | 2014-05-08 | Fujitsu Component Ltd | Thermal printer |
-
1989
- 1989-10-20 JP JP12282789U patent/JPH0362845U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079882A (en) * | 2012-10-12 | 2014-05-08 | Fujitsu Component Ltd | Thermal printer |
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