| 摘要 |
<p>PURPOSE:To cancel irregularity in the rotation of a photosensitive body and to obtain a uniform printing result by performing the writing operation of an optical printing head in synchronism with the quantity of rotation of the photosensitive body. CONSTITUTION:A detector 1 generates a pulse signal by the rotation and movement of the photosensitive body 3 which corresponds to specified print density. A print data buffer circuit 10 is stored with a print data signal sent out of a write print data memory 12 by a constant quantity and sends the signal out to the optical printing head 2 on a first-in first-out basis in synchronism with the pulse signal from the detector 1. A light emission signal generating circuit 11 allows the head 2 to emit light for a necessary time after the printing data signal is sent out to expose the photosensitive body 3. This constitution eliminates the irregularity in the rotation of the photosensitive body 3 by performing the writing operation of the head 2 in synchronism with the quantity of rotation of the photosensitive body 3 to obtain a uniform printing result.</p> |
