发明名称 |
SETT OCH ANORDNING FOR SKRIVKVALITETSKONTROLL |
摘要 |
A method and device for checking the printing quality of matrix or liquid jet printers (2). A character (3) is printed in the paper margin and is optically sensed in connection with line shift. The signal pattern from the symbol is compared with a predetermined pattern corresponding to a correct reproduction of the character. An alarm signal is sent if there is a difference between the signal patterns. |
申请公布号 |
SE8305478(L) |
申请公布日期 |
1985.04.06 |
申请号 |
SE19830005478 |
申请日期 |
1983.10.05 |
申请人 |
ERICSSON TELEFON AB L M |
发明人 |
FALK P I R |
分类号 |
B41J2/30;B41J;B41J3/44;B41J29/00;B41J29/38;B41J29/393;B41J29/46;B41J35/36;(IPC1-7):B41J3/44 |
主分类号 |
B41J2/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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