JPH02248267A - Digital copying device - Google Patents

Abstract

PURPOSE:To perform copying of each mode quickly and easily by a method wherein a read image data is stored in one or a plurality of images storing means, and printing is performed according to a specific mode of a standard copy, a continuous copy, a superposed copy, etc. CONSTITUTION:When a standard copy, a continuous copy, a double sided copy, a superposed copy, etc. are specified by a mode specifying part 1, an image storing part 3 stores digital image information of a number of pixels read with a copy read part 2 in one or a plurality of memories according to the specified mode. Then, an image output part 4 reads the corresponding image information of the image storing part 3 according to the specified mode and by adding appropriate correction with a correction part, and outputs it by printing as the standard copy, the continuous copy, the double-sided copy, or the superposed copy. Various mode copies can be thus quickly easily certainly printed.

Description

[Detailed description of the invention] [Object of the invention J (Industrial application field) The present invention relates to a digital copying device.

(Prior Art) A conventional copying device exposes the surface of a rotating drum-shaped photoreceptor to light as a document is scanned, attaches toner to the latent image obtained on the surface of the photoreceptor, and transfers this toner onto copy paper. It is transferred and heat-fixed.

In such a conventional copying apparatus, by repeating scanning of a document multiple times, multiple copies can be made intermittently.

Further, by turning over the copy paper that has been printed twice and supplying it, and copying another document on the back side, a double-sided copy can be obtained.

Furthermore, by refeeding the copy paper that has been printed twice and copying another original on the same side, or by using a special scanning system and scanning two types of originals sequentially or simultaneously. , it is possible to perform overlapping copying.

(Problem to be Solved by the Invention) However, in the conventional copying apparatus as described above, a method is adopted in which a latent image is obtained by exposing the surface of a rotating drum-shaped photoreceptor according to scanning of original light. As a result, the equipment became large-scale, as well as continuous copying, double-sided copying,
There has been a problem in that various inconveniences occur when performing superimposed copying and the like.

Specifically, since the device is large-scale, paper jams often occur. In continuous copying, there is a limit to the copy speed.

Double-sided copying takes a lot of effort, and errors in operation can lead to incorrect copying positions and orientations. Overlapping copying requires a special mechanism, which increases the likelihood of paper jams. etc.

Therefore, an object of the present invention is to provide a digital copying device that can perform continuous copying, double-sided copying, registration copying, etc. quickly, easily, and reliably, and has a simple device configuration. do.

[Structure of the Invention] (Means for Solving the Problems) A digital copying apparatus of the present invention that solves the above-mentioned problems includes a document reading means and one or more image data for storing information read by the reading means. An image storage means, and an image output means for printing the contents stored in the storage means continuously, simultaneously on both sides, or in a superimposed manner according to a specified copy mode such as continuous copy, image copy, and superimposed copy. It is characterized by having the following.

(Function) In the digital copying device of the present invention, the document reading means reads the document by appropriate scanning, one or more image storage means stores the read information as image data, and an appropriate printing device is used to store this information. Continuous copying depending on the content,
Perform double-sided copying, overlapping copying, etc.

(Example) The present invention will be explained in detail below.

FIG. 1 is a block diagram of a digital copying apparatus showing one embodiment of the present invention.

As shown in the figure, the digital copying apparatus of this example includes a mode specifying section 1, a document reading section 2, an image storage section 3, an image output section 4, and a correction section 5.

Mode designation section 1 includes standard copy, continuous copy, double-sided copy,
A predetermined mode, such as overlapping copy, is set according to the operator's specifications.

The manuscript reading unit 2 reads the characters and figures of the manuscript 6 as shown in FIG. 2 using a general-purpose scanning means, and converts them in advance into a binary signal with, for example, 1 for parts with characters and figures and 0 for parts without them. It outputs image information with a set number of pixels.

The image storage unit 3 stores a plurality of memories Ml ([
-1, 2, . . . ), image data corresponding to a predetermined document is stored in a predetermined memory Ml. That is, in the storage state shown in FIG. 3, for standard copy,
It is stored in one memory Ml in a one-to-one relationship, but in double-sided copying or overlapping copying, it is stored in multiple memories Ml (for example, M+, M2) depending on the number of originals to be copied.
It is something to remember above. Of course, one memory may be divided into addresses and used as a plurality of memories M1, M2, . . . .

The image output section 4 uses any printing method, including various printing methods used in printers and plotters, according to the mode specified by the mode specifying section 1, and according to the appropriate correction section 5. Modifications are made and printed out as standard copies, continuous copies, double-sided copies, and overlapping copies.

The correction unit 5 clarifies blurred characters and figures, and performs other image corrections such as noise removal and affine transformation.

FIG. 4 is an explanatory diagram showing an example of the mechanism of the digital copying device.

As shown in the figure, the digital copying apparatus of this example has an image storage unit 3 as first and second image memories M.

It is composed of M2. The image output section 4 is also connected to a paper feed stacker 7, a paper feed roller 8, a front side printing section 9, a back side printing section 10, a paper ejection roller 11, and a paper ejection stacker 12.
It consists of

The front surface printing unit 9 includes an image generator 13A connected to the first image memory MH, an image head 1.5A connected to the ink cartridge 14A,
It includes a heater brake 1-16A and a transfer roller 17A. Similarly, the back printing unit 10 includes an image generator 13B connected to the second image memory M2, an image head 15B connected to the ink cartridge 1-4B, a heater plate 16B, and a transfer roller 17B. Configured with the necessary features.

In the configuration shown in FIG. 4, the image generator 15A transfers image information from the image memory M1 to the image head 1.
Convert this image head 1 so that it can print 5A.
5A prints the image information in the memory M1 generated by the image generator 13A on the surface of the paper. Similarly, when the image head 15B is in double-sided copy mode, the image generator 13B generates 1. The image information stored in the image memory M2 is printed. In the standard mode, only the first image head 1.5A operates, and in the superposition mode, the contents of the image memory M2 are combined into the image memory M1, and the image head 15A is operated to perform copying.

As shown in FIG. 5, in the continuous copy mode, a document is read in step 501, and the end of scanning is determined in step 502 before proceeding to step 503.

In step 503, it is determined whether correction processing is necessary, and if it is unnecessary, the process moves to step 505, but if correction is necessary, corrections are made in step 504, such as clarifying blurred characters and figures.

When the latent image formation process described above is completed, the process moves to the visualization process starting from step 505.

That is, paper is fed in step 505, and step 50
In step 6, image data is read from the first image memory M1, transferred in step 507, fixed in step 508, and determined whether the number of copies has reached a preset number in step 509. Steps 505 to 509 are repeated until the set number of sheets is reached.

Here, in this example, the paper feeding in step 505 can be performed continuously without gaps. That is, step 50
1. ．． In step 502, scanning for reading the original is performed only once, and the rest is simply printing.

Further, the contents of the image memory Ml stored in step 501 or 504 can be stored and saved separately, so a clear copy can be obtained at any time.

Next, under the double-sided copy mode shown in FIG. 6, in steps 601 and 602, the originals to be copied on both sides are sequentially read and stored in the two memories M, M2 shown in FIG. In steps 603 and 604, appropriate corrections are made such as clarifying blurred characters, and the latent image forming step is completed. Next, the process moves to the front surface visualization step of steps 605 to 608 and the back surface visualization step of steps 609 to 612. .

In step 605, paper is fed, and in step 606, the first
The image data is read out from the image memory Ml of , transferred to the surface of the paper in step 607, and fixed on the surface in step 608.

In steps 609 to 612, the back side is similarly printed.

In step 613, it is determined whether the desired number of sheets has been reached, and steps 605 to 613 are repeated until the desired number of sheets has been reached.

In this example, as shown in FIG. 4, printing is sequentially performed on the front and back sides of paper fed in a straight line, so there is little possibility of paper jams occurring.

FIG. 7 is a flowchart showing the overlapping copy processing method.

In the figure, in steps 701 and 702, documents to be superimposed are read into the first image memory M1, and in step 706, the contents of the memory M2 are combined with this memory M1.

In the processing of steps 703 to 705, if the data to be superimposed, such as a company logo, is already stored in the memory M2, it is left as it is, and if it is not prepared, the necessity thereof is determined in step 703, Steps 704 and 705 indicate that a new scan reading is performed.

In steps 707 and 708, appropriate modifications are made.

Next, in step 709 paper is fed, and in step 710
The image data is read from the image memory M1 in step 711, is fixed in step 712, and is transferred in step 711.
At step 13, the number of copies is confirmed and the desired number of superimposed copies are obtained.

In this example, desired characters and figures to be superimposed are stored in the second image memory M2 in advance, or by newly storing characters and figures to be superimposed in the second image memory M2. You can get a superimposed copy.

By the way, the above-mentioned image memories M, M2 are large-capacity, readable and non-volatile E2P, which has been developed in recent years.
ROM is optimal.

FIG. 8 shows a block diagram of a control circuit of a 4M NAND E2 PROM.

As shown in the figure, the control circuit of the E2 FROM of this example is a control logic circuit (Control log circuit).
c circuit ) 1.7 and CE as the control signal.

It has OE, WE, AO to AI as address signals, I/Oo = I/Oy as input/output signals, and Vee and V88 as power supplies.

Memory cell array
rray ) 18 is NAND E2 as shown in Figure 9.
It is a PROM cell.

A plurality of lines BL, ~BL+a (n+-2048) connected to this NAND E2 PROM 18 are connected to the sense amplifier and data latch circuit 19, and other lines 5GIn, WL in -WL4n.

5G2n (n -512) is the row decoder circuit 20
It is connected to the.

Address signal AO""AI 8 is input to row decoder 19 and column decoder 22 via address buffer circuit 20.

A timing chart at the time of reading is shown in FIG. Here, the control signals CE and OE are changed to "L1 control signal WE".
H'' level and address A.

~A+8, eight cells are appropriately selected and the data output buffer (Data outBu
["['or] is outputted to the l100 to l107 bins via the circuit 23.

FIG. 11 shows a timing chart during writing. Here, control signal CE is set to "L-L//I/, and OE is set to "H".
By toggling the level and WE, the data input from Ilo to the data latch circuit 19 at a predetermined address is transferred to the data input buffer (Data Input).
The data is latched by the data latch circuit 19 via the B u(f'or ) 24, and then writing is performed.

In the E2 FROM of this example, image data can be stored temporarily or semi-permanently in a readable/writable and non-volatile manner using eight cells.

As mentioned above, in this example, the image memories M1 and M2
is configured with E2 FROM, and using this, standard copying, continuous copying, double-sided copying, overlapping copying, etc. can be performed efficiently with a simple system.

Of course, various other general-purpose modes such as magnification change and coloring can be used as the copy mode.

In the above embodiment, printing was performed using the front side printing section 9 in the standard copy mode, but it is also possible to print using the back side printing section 10. For example, conventionally, the paper is stored in the discharge stacker, so the 10th page is on top and the 1st page is on the bottom, or
A copy was made with the top and bottom upside down. In the digital copying apparatus of this example, by using the back printing section 10 in the standard copy mode, it is possible to obtain a copy in which the first to tenth pages are in normal order when turned over.

The present invention is not limited to the above embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[Effects of the Invention] As described above, since the present invention is a digital copying device as described in the claims, continuous copying, double-sided copying, overlapping copying, etc. can be performed quickly, easily, and reliably. , the device configuration can be made into parts.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an overview of a digital copying apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of a document, FIG. 3 is an explanatory diagram showing the storage contents of an image memory, and FIG. Explanatory diagram showing a specific example of the mechanism of the example digital copying device, No. 5
The figure is a process flowchart for continuous copy mode, Figure 6 is a process flowchart for double-sided copy mode, Figure 7 is a process flowchart for overlap copy mode, and Figure 8 is a process flowchart for E
2 Block diagram of the control circuit of FROM, Figure 9 is E2
A detailed diagram of the FROM, FIG. 10 is a timing chart of read processing, and FIG. 11 is a timing chart of write processing. 1...Mode designation section 2...Original reading section 3...Image storage section 4...Image output section 5...Correction section M, , M2...Image memory

Claims (4)

[Claims] (1) A document reading means, one or more image storage means for storing information read by the reading means as image data, and continuous copying, image copying, overlapping copying, etc. of the contents stored in the storage means. 1. A digital copying apparatus comprising an image output means that prints images continuously, simultaneously, or in an overlapping manner according to a specified copy mode. (2) In the digital copying device according to claim 1,
The continuous copying is a digital copying device that performs repeated continuous printing on copy paper that is continuously flown out with close gaps. (3) In the digital copying device according to claim 1,
The above-mentioned double-sided copying is a digital copying device that prints the contents of the image storage unit stored respectively for the front and back sides of a document simultaneously or sequentially on the front and back sides of paper fed in a straight line. (4) In the digital copying device according to claim 1,
The above-mentioned overlay copying is a digital copying apparatus that sequentially reads original documents that are desired to be overlaid, stores them in a plurality of image storage means, and then combines and prints the contents of these image storage means.