JPH0354504B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image recording apparatus such as a copying machine that stores a read original image in a memory and prints it out.

In the case of document image scanning using the electronic scanning method, it is necessary to either scan a certain area and print it out, or
Alternatively, a method is generally used in which a plurality of scanned images are stored in a large-capacity image memory such as a disk, and then the memory is accessed, edited, and printed out. Therefore, when compositing a part of an image with a part of another image, generally the part of the image is accessed from a large memory and expanded onto the image memory, and the part of the other image is similarly stored in the image memory. You have to expand it on top and then print it out,
It was a complicated process and took time. A block diagram of an example is shown in FIG. In FIG. 1, 1 is an image reading section, 2 is an image memory, 3 is a large capacity disk file that can store n pages of images, and 4 is a printer section. When a part of the first page and a part of the second page are to be combined in the system shown in FIG. 1, the first page and the second page are stored on a disk via a buffer such as the image memory 2 as shown in the figure. In the example shown in the figure, when compositing the shaded area of the first page with the shaded area of the second page, first store the shaded area of the first page stored on the disk in a certain area of the image memory 2, and then A method is used in which the shaded portions of two pages are stored in another portion of the image memory 2 and then printed out by the printer 4. This method has the disadvantage that it is impossible to synthesize in real time and requires complicated processing.

The present invention has been made in view of the above points, and it is possible to read a book original and reproduce a book copy with the same page layout as the book original in almost real time, without requiring a large memory capacity or complicated operations. Specifically, by sequentially reading an image of page n-1 and an image of page n in a book manuscript in a spread-open state,
a reading means for sequentially outputting the image data of the page and the image data of the n page; a first storage means for storing the image data of the n-1 page output from the reading means; and a first storage means for storing the image data of the n-1 page output from the reading means. a second storage means for storing the image data of the n-1 pages to be stored in the first storage means;
In parallel with storing the image data of the page, the image data of the n-2 page on the back side of the n-1 page already stored in the second storage means is read out from the second storage means, After reading out the two pages of image data, in parallel with storing the n pages of image data in the second storage means, the n
- reading means for reading out one page of image data from the first storage means, and the n-2 reading means for sequentially reading out one page of image data from the second storage means and the first storage means;
Image recording comprising a recording means for sequentially recording the image of the n-2 page and the image of the n-1 page on the same recording material based on the image data of the page and the image data of the n-1 page. It provides equipment.

The present invention will be specifically described below with reference to the drawings. FIG. 2 illustrates the principle of the invention. 1 is the first page in the previous scan, 2 is the second page in the current scan, 3 and 4 are image memories that store the first page, 5 and 6 are image memories that store the second page, and 7 is the printer section. . This example also shows the principle of combining the image of the first half of the first page of the previous scan with the first half of the second page of the current scan and printing in real time. First, the first half and second half of the first page 1 of the image are stored in image memories 3 and 4, respectively, due to the previous scan. Next, while the contents of the second page 2 are being transferred to the image memories 5 and 6 during the current scan,
Print out the first half of the first page of the previous scan. Assuming that image scanning and printout are performed at the same speed, the transfer of the first half of the second page to the image memory 5 ends at the same time as the printout of the image memory 3 ends. At this time, by switching channels and printing out from the image memory 5, images can be synthesized in real time.

Incidentally, by dividing an image into a plurality of parts and preparing a plurality of image memories each having a division of image memory corresponding to each division, it is possible to synthesize a plurality of images.

Next, FIGS. 3 to 6 show application examples of the present invention.
This will be explained with reference to the figures. FIG. 3 shows the drawbacks of copying books and the like. When copying a book, etc., if you spread it out, read it all at once, and then folded the center of the copied image, the left and right of the page would be reversed. In the case of book A in FIG. 3, the first page is on the left and the second page is on the right, but in the case of copied B, the first page is on the right and the second page is on the left. As mentioned above, to correct this conventionally requires a large amount of memory, complicated processing, and editing time. The above drawbacks can be solved by using the present invention. In this example, as shown in Figure 4, an A4 size book is
An example of editing two pages is shown below.

A block diagram of this embodiment is shown in FIG. 10 is a document placed on a glass table; 12 is a photoelectric conversion element (CCD) such as a CCD that scans the document in line; 1;
3 and 14 are gates that switch memory input and output;
15 and 16 are image memories each capable of storing A4 size, 17 is a control unit that controls gates 13 and 14 and scanning, printing, etc., 18 is a laser diode, 19 is a rotating multi-view mirror, 20 is an Fθ lens, 21
Reference numeral 50 indicates a photosensitive drum, and 50 a drive system that reciprocates the glass table on which the original 10 is placed in the direction of the arrow for exposure and scanning. Only A3 width documents can be scanned.
Page scanning can be performed continuously. The read/memory output control unit 17 stores the flow shown in FIG.
It consists of a well-known microcontroller with ROM. 100
is the glass stand start position detection switch, 101
1 is a switch that detects the movement of half of the glass base corresponding to the end of scanning half of the glass base (A4 end).
02 is a full movement detection switch corresponding to the completion of full scanning of A3, and both are operated by a cam installed on the glass stand. The document is main-scanned by the CCD and sub-scanned by moving the glass.

The control procedure is shown in FIG. The scanning numbers in FIG. 6 indicate the number of scans, and the arrowed portions in the figure indicate scanning and reading by the CCD 12. First, the memories 15 and 16 are cleared. Next, the first page is scanned and the image memory 1 shown in Fig. 5 is scanned.
5 and stores the image data. At the same time, the cleared contents (white) of the memory 16 are printed out. This situation is shown in the upper row of scan 1 in FIG.
Assuming that reading by the CCD 12 and printing are performed at the same speed, reading into the memory 15 and printing from the memory 16 in FIG. 5 are completed at the same time. Next, when scanning enters the second page as shown in the bottom row of scan 1 in Figure 6, the contents of the first page are printed at the same time as the reading, and the cover part (white) is printed as in the print of scan 1.
and the first page are printed out on the same A3 size transfer paper. As is well known, printing is done on photoreceptor 2.
First, a laser beam modulated by memory output data is irradiated to create a latent image, which is developed and transferred onto transfer paper. By repeating the operations shown in FIG. 6 below, editing processing can be performed in real time.

FIG. 5 will be explained in detail with reference to FIG. When a start key (not shown) is turned on, it is checked whether the document glass stand is at the start position (stop position) of the switch 100 (1), and if not, the CPU outputs a signal BD to return it to that position. The document table drive system 50 is reversely driven (2). After reaching the start position, turn off the BD, output the FD to start scanning the original, and move the original glass table forward. Output signal PR and start laser output operation (3). and gate switch 1
3 and 14 to positions a and d, and memory 15
Data is stored in the memory 16 and data is output from the memory 16 (4). When the original glass table reaches the position of the switch 101 (5), it is assumed that scanning of A4 size is completed and the switches 13 and 14 are switched to b and c (6). As a result, data is output from the memory 15 and data is stored in the memory 16. Continue scanning and switch 10
When the original glass platen reaches 2, it is considered that full-size scanning is completed, and the advance signal FD is turned off and BD is turned on to return the original glass platen, and when it reaches the stop switch 102, the FD is outputted again by the restart input and the gate switch is turned on. Switch 13 and 14 to a and d (4).
The scanning end detection signal for A4 size and A3 size is
It can also be obtained by counting the number of line scans of the CCD 12 by a predetermined number.

It should be noted that this embodiment is just an example, and a wide variety of real-time editing is possible by increasing the image memory and further subdividing the image scanning sections.

As explained above, according to the present invention, the image data of page n-1 and the image data of page n outputted from the reading means for sequentially reading the image of page n-1 and the image of page It has first and second storage means for respectively storing image data, and n-1 pages of image data are already stored in the second storage means in parallel with the storage of the image data in the first storage means. - Read image data of n-2 pages on the back side of page 1 from the second storage means,
- After reading out the image data of page 2, in parallel with storing the image data of page n in the second storage means, read out the image data of page n-1 from the first storage means; Based on the image data of page n-2 and the image data of page n-1 which are sequentially read out from the first storage means, the image of page n-2 and the image of page n-1 are recorded on the same recording material. are recorded sequentially, so there is no need for large memory capacity or complicated operations;
Instead of the image of page n-1 and the image of page n when the book manuscript is opened, the image of page n-2 and the image of page n-1 on the back side of page n-1 are recorded. By binding the recording material on which the image of page n-2 and the image of page n-1 are recorded in this way, it is possible to reproduce a book copy with the same page layout as the book original. .

[Brief explanation of drawings]

Figure 1 is a block diagram of conventional image forming control, Figure 2 is a block diagram of conventional image forming control.
The figure is an explanatory diagram of image formation control in the present invention.
4 is an explanatory diagram of the print result, FIG. 5 is a control circuit diagram of the image forming apparatus according to the present invention, FIG. 6 is an explanatory diagram of the operation according to FIG. 5, and FIG. 7 is a control flowchart diagram in FIG. 5. , 15 and 16 are image memories, 13 and 14 are gates, and 12 is a CCD.

Claims (1)

[Scope of Claims] 1. By sequentially reading an image of page n-1 and an image of page n in a book manuscript in a spread-open state, the image data of page n-1 and the image of page n
a reading means for sequentially outputting image data of pages; a first storage means for storing image data of the n-1 page output from the reading means; and an image of the n page output from the reading means. a second storage means for storing data; and the n-1 page already stored in the second storage means in parallel with the storage of the n-1 page image data in the first storage means. n on the back side of
- reading two pages of image data from the second storage means, and after reading out the n-2 pages of image data, in parallel with storing the n-page image data in the second storage means; reading means for reading image data of page n-1 from said first storage means; image data of page n-2 read out sequentially from said second storage means and said first storage means; Based on the image data of page n-1, the image of page n-2 and the image of page n are printed on the same recording material.
- An image recording device characterized by having a recording means for sequentially recording one page of images.