Device for imaging a printing form and having at least one laser diode bar

A printing form exposer, comprising:

• at least one imaging device containing:
• at least one laser diode bar having a number of laser diodes disposed along a line with nonuniform positional deviation, an actual spacing of positions projected onto said line of two adjacent said laser diodes differing from an intended spacing;
• and
• at least one optical correction element for changing at least one course of a light beam emitted by one of said adjacent laser diodes, said optical correction element changing the at least one course such that, downstream of saidI optical correction element, beam courses of emitted light from said two adjacent laser diodes are the courses of two light beams from adjacent virtual laser diodes whose positions projected onto said line have a different or other spacing along said line, which have a smaller deviation in relation to the intended spacing than the actual spacing or is equal to the intended spacing.

A printing unit, comprising:

• at least one imaging device containing:
• at least one laser diode bar having a number of laser diodes disposed along a line with nonuniform positional deviation, an actual spacing of positions projected onto said line of two adjacent said laser diodes differing from an intended spacing;
• and
• at least one optical correction element for changing at least one course of a light beam emitted by one of said adjacent laser diodes, said optical correction element changing the at least one course such that, downstream of saidI optical correction element, beam courses of emitted light from said two adjacent laser diodes are the courses of two light beams from adjacent virtual laser diodes whose positions projected onto said line have a different or other spacing along said line, which have a smaller deviation in relation to the intended spacing than the actual spacing or is equal to the intended spacing.

A press, comprising:

• a printing unit containing at least one imaging device, the at least one imaging device, containing:
• at least one laser diode bar having a number of laser diodes disposed along a line with nonuniform positional deviation, an actual spacing of positions projected onto said line of two adjacent said laser diodes differing from an intended spacing;
• and
• at least one optical correction element for changing at least one course of a light beam emitted by one of said adjacent laser diodes, said optical correction element changing the at least one course such that, downstream of saidI optical correction element, beam courses of emitted light from said two adjacent laser diodes are the courses of two light beams from adjacent virtual laser diodes whose positions projected onto said line have a different or other spacing along said line, which have a smaller deviation in relation to the intended spacing than the actual spacing or is equal to the intended spacing.