Facsimile and static presentation processing – Static presentation processing – Size – resolution – or scale control
Reexamination Certificate
1996-07-15
2001-08-28
Williams, Kimberly A. (Department: 2622)
Facsimile and static presentation processing
Static presentation processing
Size, resolution, or scale control
C358S452000, C358S453000, C399S085000
Reexamination Certificate
active
06281983
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image forming apparatus having a preview function for previewing an image before it is printed out.
2. Related Background Art
High image quality and sophisticated functions of digital color copiers are becoming more common. A color adjustment process and an editing process for an output image at present meet most of requirements of users. Copiers having a so-called preview function are also being manufactured. With this preview function, instead of printing out an image several times in order to confirm the edited image or adjusted color, an image is displayed on a CRT or the like for confirmation of such editing and adjustment.
There are copiers having a monochrome liquid crystal display. For a color copier, however, a preview system of full-color is desired in order to adjust colors.
One example of a preview system is shown in FIG.
45
. Blocks
1101
to
1109
constitute a full-color copier, and blocks
1110
to
1111
, and
1219
constitute a preview system.
In
FIG. 45
, reference numeral
1101
represents an RGB output sensor for reading a reflection original, reference numeral
1102
represents an S/H and A/D converter, reference numeral
1103
represents a shading correction circuit, reference numeral
1104
represents an input masking circuit, reference numeral
1105
represents a LOG converter circuit, reference numeral
1106
represents a masking UCR for adjusting the colors to match the printer characteristics, reference numeral
1107
represents an image editing circuit for performing various processes such as trimming, masking, painting, and a variable power process, reference numeral
1108
represents an edge emphasis circuit, and reference numeral
1109
represents a printer unit for scanning a reflection original three or four times to print out a full-color image.
Reference numeral
1110
represents an image memory unit for storing image signals (RGB) after input masking
1104
, reference numeral
1111
represents a memory control circuit for controlling the image memory
1110
(the memory control circuit having an address counter and controlling data transfer between an unrepresented CPU and image memory), and reference numeral
1219
represents a CRT for displaying data stored in the image memory. If a read image is simply displayed on a CRT, a desired editing process entered from an operation unit is not reflected in the image. Therefore, the system is configured so that data in the image memory
1110
can be accessed by an unrepresented CPU to perform the process equivalent to the circuit
1107
and display the final processed image.
High speed requirements for a digital full-color copier are steadfast. In order to meet the requirements, a color LBP has been proposed in which four photosensitive drums are used as shown in FIG.
1
and development units for Y, M, C, and K colors are used. Such a color LBP is necessarily required to have an image memory for correcting a spatial displacement among the drums. It is desired to have a full-page image memory in order to perform more sophisticated image processing.
As the image processing function attains a high quality, it is difficult to predict how an image is actually printed out. There may sometimes be a difference between the printed image and the predicted image, and unnecessary copies increase.
In a two-page separation mode of sequentially copying right and left pages of an opened original document, in a multi-page enlargement mode of dividing one original into a plurality of block regions and enlarging and copying an image of each block region on multiple sheets, or in a mode of sequentially forming an image on multiple sheets, it is difficult to know in what order each image is copied, and copied sheets are required in some cases to rearrange their order.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an image forming apparatus and a preview method capable of eliminating the above disadvantages.
It is another object of the present invention to provide an image forming apparatus with an image memory and a preview method capable of eliminating the above disadvantages, efficiently checking a final image, and reducing unnecessary copies as much as possible.
It is another object of the present invention to provide an image forming apparatus and a preview method capable of checking the image forming order in advance by displaying the images processed by the same image forming order on a display unit, in a specific mode of sequentially forming at least two images.
It is another object of the present invention to provide an image forming apparatus and a preview method capable of easily checking a plurality of images to be sequentially formed by displaying them on the same screen, in a specific mode of sequentially forming at least two images.
It is another object of the present invention to provide an image forming apparatus and a preview method capable of easily intercepting a preview of a plurality of images to be sequentially formed.
The above and other objects of the invention will become apparent from the following detailed description and the claims when read in connection with the accompanying drawings.
REFERENCES:
patent: 5467202 (1995-11-01), Washio et al.
patent: 5485283 (1996-01-01), Kaneko
patent: 5644407 (1997-07-01), Watanabe et al.
patent: 5644411 (1997-07-01), Tamagaki et al.
patent: 5655177 (1997-08-01), Kato
patent: 5721624 (1998-02-01), Kumashiro et al.
patent: 5732230 (1998-03-01), Cullen et al.
patent: 5745664 (1998-04-01), Nomura et al.
Kitamura Toshiyuki
Takahashi Hiroyuki
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Williams Kimberly A.
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