JPH01110932U - - Google Patents
Info
- Publication number
- JPH01110932U JPH01110932U JP667388U JP667388U JPH01110932U JP H01110932 U JPH01110932 U JP H01110932U JP 667388 U JP667388 U JP 667388U JP 667388 U JP667388 U JP 667388U JP H01110932 U JPH01110932 U JP H01110932U
- Authority
- JP
- Japan
- Prior art keywords
- time
- density gradation
- energizing
- heating
- control type
- 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 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は、本考案の一実施例による濃度階調制
御型サーマルプリンタの主要な構成を示すブロツ
ク図、第２図は、実施例のサーマルヘツド１００
における各信号のタイミングを示す図、第３図は
、濃度階調制御方式で用いられる通電時間・濃度
特性曲線を示す図、および第４図は、従来の濃度
階調制御型サーマルプリンタの主要部の構成を概
略的に示すブロツク図である。
図面において、１０…サーマルヘツド、１２…
発熱抵抗体、１４，１６…シフトレジスタ、１８
…ラツチ回路、３２，３４…データ比較回路、４
２…ＣＰＵ、４４…ラツチ・ストローブ回路。
FIG. 1 is a block diagram showing the main configuration of a density gradation control type thermal printer according to an embodiment of the present invention, and FIG. 2 shows a thermal head 100 of the embodiment.
3 is a diagram showing the energization time/density characteristic curve used in the density gradation control method, and FIG. 4 is a diagram showing the main parts of a conventional density gradation control type thermal printer. FIG. 2 is a block diagram schematically showing the configuration of the device. In the drawings, 10... thermal head, 12...
Heat generating resistor, 14, 16...shift register, 18
...Latch circuit, 32, 34...Data comparison circuit, 4
2...CPU, 44...Latch strobe circuit.
Claims (1)
応する複数の発熱抵抗素子を複数のブロツクに組
分けし、前記印画ラインに対する一定の通電イン
ターバル中に時分割方式で各ブロツク毎に各発熱
抵抗素子を単位通電時間の整数倍の通電時間だけ
通電させることによつて各画素に濃度階調を与え
るようにした濃度階調制御型サーマルプリンタに
おいて、 前記ブロツクの発熱抵抗素子のうち端部の発熱
抵抗素子に対する前記単位通電時間を他の発熱抵
抗素子に対するものよりも長くする手段を備える
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] A plurality of heating resistive elements corresponding one-to-one to a plurality of pixels on one printing line are grouped into a plurality of blocks, and are time-divided during a fixed energization interval for the printing line. In a density gradation control type thermal printer in which a density gradation is given to each pixel by energizing each heating resistor element for each block for an energizing time that is an integral multiple of the unit energizing time, A density gradation control type thermal printer characterized by comprising means for making the unit energization time for one end of the heating resistance elements longer than that for other heating resistance elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP667388U JPH01110932U (en) | 1988-01-22 | 1988-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP667388U JPH01110932U (en) | 1988-01-22 | 1988-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01110932U true JPH01110932U (en) | 1989-07-26 |
Family
ID=31211037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP667388U Pending JPH01110932U (en) | 1988-01-22 | 1988-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01110932U (en) |
-
1988
- 1988-01-22 JP JP667388U patent/JPH01110932U/ja active Pending
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