US 4,825,250 A · Image forming apparatus including exposure scanning means

Abstract

There is an image forming apparatus in which images of a plurality of originals set on the original plate glass are individually exposed, scanned and read, and the read images are synthesized and recorded at arbitrary positions on a recording paper. This apparatus also has a device to record the images on the front and back surfaces of the recording paper. The synthetic recording and the front and back surface recording can be arbitrarily switched and selected. This apparatus is provided with a trimming function to erase unnecessary image portions of the images, a masking function to prevent the shaded portions from being recorded on the paper, and an image shift function to adjust the synthesizing positions of the images on the recording paper for every image. In the serial page copy mode adapted for book images, the masking function is automatically selected and the recording positions on the front and back surfaces of the recording paper are aligned to either one of the right and left sides of the paper, so that the binding margins can be secured on one selected side of the paper. The masking function is released when the serial page copy mode is released.

Claims45

Dependent claims

An image forming apparatus comprising:

a platen for placing an original thereon;
means for exposure-scanning an image of the original placed on said platen, wherein said exposure-scanning means scans a first area on said platen through a first scanning operation, and then scans a second area on said platen through a second scanning operation;
image forming means for forming on a sheet an image of an original exposed by said exposure scanning means upon the first scanning operation, and then for automatically forming on the same sheet an image of an original exposed by said exposure scanning means upon the second scanning operation, wherein said image forming means operates in a multi-mode for disposing both of the images formed upon the first scanning operation and upon the second scanning operation on the same surface of the same sheet and operates in a two-sided mode for disposing each of the images formed upon the first and second scanning operations, on different surfaces of the same sheet;
and
selecting means for prohibiting said image forming means from operating in the two-sided mode when the multi-mode has been selected and for prohibiting said image forming means from operating in the mutli-mode when the two-sided mode has been selected.

2 more elements

An image forming apparatus comprising:

a platen for placing an original thereon;
means for exposure-scanning an image of the original placed on the platen, wherein said exposure-scanning means scans a first area on said platen through a first scanning operation, and then scans a second area on said platen through a second scanning operation;
area designating means for designating a desired area of the original in at least one of said first and second areas on said platen;
and
image forming means for forming an image of an original exposed by said exposure-scanning means upon the first scanning operation, and then for automatically forming an image of an original exposed by said exposure-scanning means upon the second scanning operation, wherein said image forming means includes erasing means for erasing an image except for an image corresponding to the area designated by said area designating means;
wherein when an area designated by said area designating means is within the first area on said platen, said image forming means actuates the operation of said erasing means in association with the designated area upon the first scanning operation of said exposure-scanning means, and prohibits the operation of said erasing means in association with the designated area upon the second scanning operation of said exposure-scanning means.

3 more elements

An image forming apparatus comprising:

a platen for placing an original thereon;
one single exposure-scanning means for exposure-scanning an image of the original placed on said platen, wherein said exposure-scanning means scans a first area on said platen through a first scanning operation and then automatically scans a second area on said platen through a second scanning operation;
image forming means for forming on a sheet an image of an original exposed by said exposure-scanning means upon the first scanning operation, and then for automatically forming on a sheet an image of an original exposed by said exposure-scanning means upon the second scanning operation,
mode selecting means for selecting a shift mode for shifting on a sheet an image forming position for an image of an original;
and
input means operating in a first input state for inputting the amount of shifting of an image formed upon the first scanning operation and operating in a second input state for inputting the amount of shifting of an image formed upon the second scanning operation when said mode selecting means has selected the shift mode,
wherein said image forming means respectively and independently shifts the images formed upon the first and second scanning operations in response to the amount of shifting inputted in the first and second input states.

4 more elements

An image forming apparatus comprising:

a platen for placing an original thereon;
one single exposure-scanning means for exposure-scanning an image of the original placed on said platen, wherein said exposure-scanning means scans a first area on said platen through a first scanning operation, and then automatically scans a second area on said platen through a second scanning operation;
output means for outputting a signal relative to an image forming magnification;
and
image forming means for forming on a sheet an image of an original exposed by said exposure-scanning means upon the first scanning operation, and then for automatically forming on a sheet an image of an original exposed by said exposure-scanning means upon the second scanning operation, wherein said image forming means operates in a mode for image-forming both the image exposed upon the first scanning opeation and the image exposed upon the second scanning operation in response to the signal relative to a common magnification outputted by said output means and wherein said image forming means operates in a mode for image-forming the images exposed upon the first and second scanning operations, in response to respective signals independently outputted by said output means.

2 more elements

Dependencies are inferred from the claim text.

Image forming apparatus including exposure scanning means

Life of this patent

Image forming apparatus including exposure scanning means

Life of this patent

Abstract

Claims45