18476160. IMAGE FORMING APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

IMAGE FORMING APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

ASAHIRO Nakayoshi of Chiba (JP)

IMAGE FORMING APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18476160 titled 'IMAGE FORMING APPARATUS

Simplified Explanation

The image forming apparatus described in the patent application includes a controller that corrects the rotation of a read image based on the inclination amount of the first sheet, and stores the corrected image in memory. If the inclination amount is below a certain threshold, the controller stores the image without correction. The image forming circuit then forms an image on a second sheet to reduce the position difference between the stored image and the image used to form the chart image.

• Image forming apparatus with rotation correction for inclined sheets:

 - Includes an image forming circuit, a reader, and a controller
 - Corrects rotation of read image based on inclination amount of first sheet
 - Stores corrected image in memory if inclination amount is within a certain range
 - Forms image on second sheet to reduce position difference with stored image

Potential Applications

This technology could be applied in: - Printing devices - Scanning devices - Photocopying machines

Problems Solved

- Correcting rotation of images on inclined sheets - Ensuring accurate positioning of images on subsequent sheets

Benefits

- Improved image quality - Reduced errors in image alignment - Enhanced overall performance of image forming apparatus

Potential Commercial Applications

Optimizing Image Alignment in Image Forming Devices

Possible Prior Art

Prior art related to image correction algorithms in scanning devices and printers may exist, but specific examples are not provided in the patent application.

Unanswered Questions

== How does the controller determine the inclination amount of the first sheet? The controller likely uses sensors or other detection mechanisms to measure the inclination amount of the sheet.

== What is the specific range of inclination amounts for which the controller performs rotation correction? The patent application does not specify the exact values for the first and second amounts used to determine when rotation correction is necessary.

Original Abstract Submitted

An image forming apparatus includes an image forming circuit that forms a chart image on a first sheet, a reader that reads the formed chart image, and a controller. If an inclination amount of the first sheet is greater than a first amount and is less than a second amount greater than the first amount, the controller performs a rotation correction on the read image to reduce the inclination amount, and stores an image of a first sheet area in the image after the correction, in a memory. If the inclination amount is less than the first amount, the controller stores an image of a predetermined area including the first sheet area, in the memory without the correction. The image forming circuit forms an image on a second sheet so as to reduce a difference in position between the stored image and an image used to form the chart image.