Laser data recording method
AssigneeFuji Photo Film Co., Ltd.
InventorMasaru Noguchi
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Abstract
A laser data recording method in which data is recorded on a heat mode recording material with high sensitivity and low laser power. A scanned laser beam is adjusted to have a substantially circular configuration on the recording material with a diameter defined at an intensity value of 1/e.sup.2 of approximately one scanning line pitch on the recording material. The laser beam is intensity modulated in such a manner that the ratio of the laser beam intensity in the "on" state to the laser beam intensity in the "off" state is in a range of 1:0.24 to 1:0.53, more preferably 1:0.25 to 1:0.50.
Claims3
A laser data recording method in which data is recorded on a data recording material by scanning and modulating a laser beam, comprising the steps of:
- generating a scanning laser beam on said data recording material, said scanning laser beam having a substantially circular configuration and a diameter defined at an intensity value of 1/e.sup.2 of said laser beam of approximately twice a scanning line pitch on said data recording material;
- and
- intensity modulating said scanning laser beam in such a manner that a ratio of a laser beam intensity in an "on" state to a laser beam intensity in an "off" state is in a range of from 1:0.24 to 1:0.53 producing a varying voltage bias such that D<Dx<2D, where Dx acts as the dot size in the scanning direction and D is a recording width obtained when scanning exposure is carried out continuously between adjacent dot positions of said recording material.
Dependencies are inferred from the claim text.