Image alignment adjusting apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKazushige Morihara
Life of this patent
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Abstract
According to one embodiment, an image alignment adjusting apparatus includes: an endless traveling belt; a pattern sensor configured to detect an adjustment pattern including plural colors imaged on the traveling belt; and a correcting unit configured to use, in initial adjustment, for image alignment adjustment, an initial adjustment value obtained by detecting a plurality of sets of the adjustment pattern imaged over the entire circumference of the traveling belt and use, in intermediate adjustment, for the image alignment adjustment an intermediate adjustment value obtained by correcting the initial adjustment value using an intermediate detection value obtained by detecting one set of the adjustment pattern imaged on the traveling belt.
Claims21
An image alignment adjusting apparatus comprising:
- an endless traveling belt;
- a pattern sensor configured to detect an adjustment pattern including plural colors imaged on the traveling belt;
- and
- a correcting unit configured to use, in initial adjustment, for image alignment adjustment by an image forming unit configured to image the adjustment pattern, an initial adjustment value obtained by detecting, with the pattern sensor, a plurality of sets of the adjustment pattern imaged over an entire circumference of the traveling belt and use, in intermediate adjustment, for the image alignment adjustment by the image forming unit, an intermediate adjustment value obtained by correcting the initial adjustment value using an intermediate detection value obtained by detecting, with the pattern sensor, one set of the adjustment pattern imaged on the traveling belt.
An image forming apparatus comprising:
- an endless traveling belt;
- plural image forming units configured to image an adjustment pattern including plural colors on the traveling belt during alignment adjustment;
- a pattern sensor configured to detect the adjustment pattern imaged on the traveling belt;
- and
- a correcting unit configured to use, in initial adjustment, for image alignment adjustment by the image forming units configured to image the adjustment pattern, an initial adjustment value obtained by detecting, with the pattern sensor, a plurality of sets of the adjustment pattern imaged over an entire circumference of the traveling belt and use, in intermediate adjustment, for the image alignment adjustment by the image forming units, an intermediate adjustment value obtained by correcting the initial adjustment value using an intermediate detection value obtained by detecting, with the pattern sensor, one set of the adjustment pattern imaged on the traveling belt.
An image aligning method comprising:
- imaging plural sets of adjustment patterns each including plural colors over an entire circumference of a traveling belt;
- detecting the plural sets of the adjustment patterns imaged on the traveling belt;
- obtaining an initial adjustment value from a detection result of the plural sets of the adjustment patterns;
- using the initial adjustment value for image alignment adjustment;
- imaging one set of the adjustment patterns on the traveling belt;
- detecting the one set of the adjustment patterns imaged on the traveling belt;
- correcting the initial adjustment value using an intermediate detection value obtained from a detection result of the one set of the adjustment patterns and obtaining an intermediate adjustment value;
- and
- using the intermediate adjustment value for the image alignment adjustment.
Dependencies are inferred from the claim text.