JPH039843U - - Google Patents

Info

Publication number
JPH039843U
JPH039843U JP7105489U JP7105489U JPH039843U JP H039843 U JPH039843 U JP H039843U JP 7105489 U JP7105489 U JP 7105489U JP 7105489 U JP7105489 U JP 7105489U JP H039843 U JPH039843 U JP H039843U
Authority
JP
Japan
Prior art keywords
thermal head
head drive
printing device
drive voltage
print
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
JP7105489U
Other languages
English (en)
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 filed Critical
Priority to JP7105489U priority Critical patent/JPH039843U/ja
Publication of JPH039843U publication Critical patent/JPH039843U/ja
Pending legal-status Critical Current

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  • Electronic Switches (AREA)

Description

【図面の簡単な説明】
第1図は本考案の実施例を示すブロツク図、第
2図はそのタイミングチヤート、第3図は従来の
サーマルヘツドのブロツク図、第4図はサーマル
ヘツド内の電気等価回路である。 b…印字率カウンタ、h…ラツチ、j…D/A
コンバータ、l…定電圧回路、d…サーマルヘツ
ド。

Claims (1)

  1. 【実用新案登録請求の範囲】 サーマルヘツドを使用した印刷装置のサーマル
    ヘツド駆動電圧をコモン単位で可変することが可
    能な手段を有するサーマルヘツド駆動回路におい
    て、 前記サーマルヘツド駆動電圧を、印字率に応じ
    て変化させて、コモン間の濃度ムラを補正する印
    字補正回路を設けたことを特徴とする、サーマル
    ヘツドを使用した印刷装置。
JP7105489U 1989-06-16 1989-06-16 Pending JPH039843U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7105489U JPH039843U (ja) 1989-06-16 1989-06-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7105489U JPH039843U (ja) 1989-06-16 1989-06-16

Publications (1)

Publication Number Publication Date
JPH039843U true JPH039843U (ja) 1991-01-30

Family

ID=31607745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7105489U Pending JPH039843U (ja) 1989-06-16 1989-06-16

Country Status (1)

Country Link
JP (1) JPH039843U (ja)

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