Edge exposing apparatus

Details Edge exposing apparatus Edge exposing apparatus

2006-08-08

2006-08-08

Nguyen, Henry Hung (Department: 2851)

Photocopying

Projection printing and copying cameras

Step and repeat

C355S067000

Reexamination Certificate

active

07088423

ABSTRACT:
An edge exposing apparatus includes a photo detector and a lighting time measuring circuit for detecting a decrease in performance of light source units. The lighting time measuring circuit detects a ready state ((stabilization of luminous intensity) of the light source units, for example by measuring a lighting time for a startup (switch-on) of the light source units. When the measuring circuit detects a preset lighting time, or when the photo detector detects a luminous intensity below a preset value, the light source units are determined to have lowered performance, and are switched off. When a decrease in performance of one unit is detected, a replacement light source unit is started while continuing edge exposure with one or more other light source unit(s). When a ready state is detected, the edge exposure with the one light source unit is terminated (switch-off), and edge exposure is performed with the replacement light source unit.

REFERENCES:
patent: 4048486 (1977-09-01), Kriege
patent: 4899195 (1990-02-01), Gotoh
patent: 5204224 (1993-04-01), Suzuki
patent: 5929976 (1999-07-01), Shibuya et al.
patent: 6002466 (1999-12-01), Brauch et al.
patent: 1-243427 (1989-09-01), None
patent: 7-183207 (1995-07-01), None
patent: 2002-313708 (2002-10-01), None

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