Image recording apparatus for composing plural partial original images into a single composite image

Claim 1

An image recording apparatus for composing plural partial orginal images into a single composite image, comprising: a photoreceptor; charging means for charging said photoreceptor; first exposing means for forming an orginal image on the charged photoreceptor, thereby obtaining an image forming area; second exposing means for neutralizing an area of the charged photoreceptor, thereby obtaining an image eliminating area corresponding to a neutralized area of the photoreceptor; area control means for controlling said second exposing means in accordance with a boundary input defining a boundary between the image forming area and the image eliminating area; recording means for recording a partial image obtained from the image forming area; operating means for operating said charging means, said first and second exposing means, said area control means and said recording means at least two times to carry out at least first and second composing operations in accordance with the boundary input, said operating means including: (a) means for carrying out said first composing operation such that a first image forming area and a first image eliminating area are formed on the charged photoreceptor and then a first partial image is recorded; and (b) means for carrying out said second composing operation such that said second exposing means is controlled in the reverse mode relative to the first composing operation, whereby a second image forming area is formed on the area corresponding to the first image eliminating area, a second image eliminating area is formed on the area corresponding to the first image forming area and then a second partial image is so recorded as to be composed with said first partial image; and said second exposing means including means for shifting at least either one of said first boundary between the first image forming area and the first image eliminating area or the second boundary between the second image forming area and the second image eliminating area from the inputted boundary, thereby avoiding an overlap image across the first partial image and the second partial image.

Claim 13

A method for composing plural partial original images into a single composite image, in an image recording apparatus, the image recording apparatus comprising a photoreceptor; and charging means for charging said photoreceptor; the method comprising: forming an original image on the charged photoreceptor responsive to an output of a first exposing means, thereby obtaining an image forming area; neutralizing an area of the charged photoreceptor in accordance with an output of a second exposing means, thereby obtaining an image eliminating area corresponding to a neutralized area of the photoreceptor; controlling said second exposing means in accordance with a boundary input defining a boundary between the image forming area and the image eliminating area; recording a partial image obtained from the image forming area; operating said charging means, said first and second exposing means, said area control means and said recording means at least two times to carry out at least first and second composing operations in accordance with the boundary input; said first composing operating comprising forming a first image forming area and a first image eliminating area on the charged photoreceptor and then recording a first partial image; said second composing operation comprises controlling said second exposing means in a reverse mode relative to the first composing operation, and forming a second image forming area on the area corresponding to the first image eliminating area, forming a second image eliminating area on the area corresponding to the first image forming area and then recording a second partial image composed with said first partial image; and shifting at least either one of said first boundary between the first image forming area and the first image eliminating ara or the second boundary between the second image forming area and the second image eliminating area from the inputted boundary, thereby avoiding an overlap image across the first partial image and the second partial image.

Claim 14

A method for composing plural partial original images into a single composite image, in an image recording apparatus, the image recording apparatus comprising a photoreceptor; and charging means for charging said photoreceptor; the method comprising: forming an original image on the charged photoreceptor responsive to an output of a first exposing means, thereby obtaining an image forming area; neutralizing an area of the charged photoreceptor in accordance with an output of a second exposing means, thereby obtaining an image eliminating area corresponding to a neutralized area of the photoreceptor; controlling said second exposing means in accordance with a boundary input defining a boundary between the image forming area and the image eliminating area; recording a partial image obtained from the image forming area; operating said charging means, said first and second exposing means, said area control means and said recording means at least two times to carry out at least first and second composing operations in accordance with the boundary input; said first composing operating comprising forming a first image forming area and a first image eliminating area on the charged photoreceptor and then recording a first partial image; said second composing operation comprises controlling said second exposing means in a reverse mode relative to the first composing operation, and forming a second image forming area on the area corresponding to the first image eliminating area, forming a second image eliminating area on the area corresponding to the first image forming area and then recording a second partial image composed with said first partial image; and shifting at least either one of said first boundary between the first image forming area and the first image eliminating ara or the second boundary between the second image forming area and the second image eliminating area from the inputted boundary, thereby avoiding an overlap image across the first partial image and the second partial image.