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Machine translation
1. (WO1980001616) UNIT FOR THE THERMAL EFFACEMENT OF OPTICAL MARKS WHICH MAY BE READ BY A MACHINE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001616    International Application No.:    PCT/CH1979/000140
Publication Date: 07.08.1980 International Filing Date: 29.10.1979
IPC:
G06K 1/12 (2006.01), G06K 13/07 (2006.01), G06K 7/14 (2006.01)
Applicants:
Inventors:
Priority Data:
977/79 01.02.1979 CH
Title (EN) UNIT FOR THE THERMAL EFFACEMENT OF OPTICAL MARKS WHICH MAY BE READ BY A MACHINE
(FR) EQUIPEMENT POUR L"EFFACEMENT THERMIQUE DE MARQUES OPTIQUES POUVANT ETRE LUES PAR UNE MACHINE
Abstract: front page image
(EN)The unit is comprised of a feed device (11, 13), an effacement head (16), a read device (15) and a control device. A light source (18) and at least two light sensors (20, 21) of the read device are arranged at a side of a recording support, the effacement head (16) being arranged on the other side. During the effacement process, the read device (15) is in operation. The output signals of the light sensors (20, 21), connected to a comparator, change in the opposite direction upon the effacement of a mark. The control device interrupts the effacement process as soon as the output signal of the comparator exceeds, respectively, goes down under a predetermined level. The effacement head (16) has a heating element which may be moved away from the recording support, a heating element with low heat capacity which may be disconnected or a projection lamp as a thermal radiation source. The feed device is comprised of a step motor, a screw (11) and a card support (13).
(FR)L"equipement est constitue d"un dispositif d"avance (11, 13), d"une tete d"effacement (16), d"un dispositif de lecture (15) et d"un dispositif de commande. Une source de lumiere (18) et au moins deux capteurs de lumiere (20; 21) du dispositif de lecture sont disposes d"un cote d"un support d"enregistrement la tete d"effacement (16) etant disposee de l"autre cote. Pendant le processus d"effacement, le dispositif de lecture (15) est en fonctionnement. Les signaux de sortie des capteurs de lumiere(20; 21), relies a un comparateur, changent en sens oppose lors de l"effacement d"une marque. Le dispositif de commande interrompt le processus d"effacement des que le signal de sortie du comparateur monte au-dessus respectivement descend en-dessous d"un niveau predetermine. La tete d"effacement (16) presente un element de chauffe pouvant etre eloigne du support d"enregistrement, un element de chauffe debranchable a faible capacite calorifique ou une lampe de projection comme source de rayonnement thermique. Le dispositif d"avance est constitue d"un moteur pas a pas, d"une vis (11) et d"un support de cartes (13).
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)