Back to results
US 2006/0187292 A1Published application
Image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorsYoshiki Matsuzaki, Yoshio Yamaguchi
Life of this patent
Estimating the term…
Abstract
An image forming apparatus has an image carrier, an exposure array, a reading sensor and a detecting unit. The image carrier carries a toner image. The exposure array forms a latent image. The reading sensor reads a pattern. The reading sensor is provided integrally with the exposure array. The detecting unit detects fluctuation based on the pattern read by the reading sensor.
Claims24
An image forming apparatus comprising:
- an image carrier that carries a toner image;
- an exposure array that forms a latent image, the exposure array being disposed along an axial direction of the image carrier;
- a first reading sensor that reads a first pattern, the first pattern being provided at uniform intervals along a peripheral direction and formed substantially parallel to the axial direction at a region, the region being excepted from a region where the latent image is formed, the first reading sensor being provided integrally with the exposure array;
- and
- a speed fluctuation detecting unit that detects surface speed fluctuations of the image carrier based on the first pattern read by the first reading sensor.
2 more elements
An image forming apparatus comprising:
- an image carrier that carries a toner image;
- an exposure array that forms a latent image, the exposure array being disposed along an axial direction of the image carrier;
- a second reading sensor that reads a second pattern, the second pattern being provided along a peripheral direction and formed so as to intersect the axial direction at a region, the region being excepted from a region where the latent image is formed, the second reading sensor being provided integrally with the exposure array;
- and
- a position fluctuation detecting unit that detects axial direction positional fluctuations of the image carrier with respect to the exposure array based on the second pattern.
2 more elements
An image forming apparatus comprising:
- an image carrier that carries a toner image;
- an exposure array that forms a latent image, the exposure array being disposed along an axial direction of the image carrier and;
- an image sensor reads a third pattern, the third pattern being provided at uniform intervals along a peripheral direction at a region, the region being excepted from a region where the latent image is formed, the image sensor being provided integrally with the exposure array;
- and
- a detecting unit that detects axial direction positional fluctuations and surface speed fluctuations of the image carrier with respect to the exposure array based on the third pattern read by the image sensor.
2 more elements
An image forming apparatus comprising:
- an image carrier that carries a toner image;
- an exposure array that forms a latent image, the exposure array being disposed along an axial direction of the image carrier;
- a reading sensor that reads a pattern, the reading sensor being provided integrally with the exposure array, the pattern being provided along a peripheral direction at a region, and the region being excepted from a region where the latent image is formed;
- and
- a fluctuation detecting unit that detects fluctuations of the image carrier based on the pattern.
2 more elements
An image forming apparatus comprising:
- an image carrier that carries a toner image;
- an exposure array that forms a latent image;
- a reading sensor that reads a pattern, the reading sensor being provided integrally with the exposure array;
- and
- a detecting unit that detects fluctuation based on the pattern read by the reading sensor.
2 more elements
Dependencies are inferred from the claim text.