| 摘要 |
A device for burning in positive-working light-sensitive layers containing diazo compounds in the production of printing forms comprises a radiation source whose radiation comprises an infrared fraction, a fraction in the visible region, and an ultraviolet fraction. In the device, a radiation absorber is provided which covers a heat reservoir. The back of the printing form is passed flat over the radiation absorber, which is maintained at a substantially constant temperatuer by the heat reservoir.
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