Optical information processing apparatus having offset adjusting circuit which can be exchanged together with optical head

DETAILED DESCRIPTION It is an object of the present invention to solve the problems in the conventional techniques as mentioned above and to provide an optical information processing apparatus in which there is no need to perform the offset adjustment in association with the exchange of an optical head.
The above object of the invention is accomplished by an optical information processing apparatus in which an optical head for recording and/or reproducing information by irradiating a light beam onto a recording medium is exchangeably attached to the apparatus main body, and wherein a circuit to compensate for an offset of an electric signal which is output from the optical head is attached to the apparatus main body so that it can be exchanged together with the optical head.
That is, according to the invention, since the offset of the exchangeable unit comprising the optical head and offset adjusting circuit has already been adjusted, the exchange of the unit due to the expiration of the life of a light source or the like can be executed without any adjustment.