JPH0744120Y2 - Multicolor copying machine with electric transmission function - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multicolor copying machine having a transfer function, and more particularly to a transfer function which shortens processing time and improves operability by making copy processing compatible with transfer processing. The present invention relates to a multicolor copying machine having the same.

[0002]

2. Description of the Related Art As a conventional two-color copying machine, for example, there is one shown in Japanese Patent Application Laid-Open No. 55-183840. In this two-color copying apparatus, one of a platen on which an original is placed or a scanner unit for reading an image is fixed, and the other is moved in the sub-scanning direction to output an image signal and an original reading unit. A two-color printing unit for performing two-color printing on a recording paper by using two sets of ink donor sheets of different recording colors.

Such an apparatus requires a small amount of electric power and can be downsized as compared with a conventional large-sized apparatus for developing toner. Further, for example, by using black and red inks, black can be used for normal recording and red can be used for important recording portions.

[0004]

However, according to the conventional two-color copying apparatus of the related art, even if an electric transmission function is added to the copying function, both functions share the original reading section or the printing section. However, there is an inconvenience that the copying operation cannot be performed during the electric transmission operation.

[0005]

In view of the above problems, the present invention encodes and modulates a multicolor image signal and sends it to a line in order to enable simultaneous use of the multicolor copying function and the multicolor transmission function. In addition, a transmission / reception unit that receives a multicolor image signal from the line, demodulates and decodes it, and a control unit that controls the copy operation performed by the document reading unit and the printing unit and the transmission / reception operation performed by the transmission / reception unit are controlled. The unit temporarily stores the multicolor image signal read by the document reading unit or the multicolor image signal received by the transmission / reception unit in the memory, then reads it from the memory and transmits it from the transmission / reception unit, or prints it by the printing unit When the copy operation is interrupted during reading, the read operation from the memory is interrupted to execute the copy operation, and when the copy operation is completed, the interrupted read operation from the memory is executed. There is provided a multicolor copying machine which has a electrical transmission function to open.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multicolor copying machine having a transmission function of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention. A two-color reading unit 1 for reading a two-color image from a document and a two-color printing unit 2 for printing the two-color image information read by the reading unit 1.
And an encoding / decoding unit 3 for encoding the information read by the two-color reading unit 1 or decoding the information from the storage unit 4.
And an image information storage unit 4 for storing image information encoded and compressed by the encoding / decoding unit 3, and image data in the image information storage unit 4 is modulated and sent to a line, or information from the line A modulator / demodulator / network controller 5 for demodulating and outputting to the storage unit 4 and controlling input / output to / from the line;
The control unit 6 controls each of the above circuits, and an operation panel 7 for setting various control conditions in addition to mode switching.

In the above structure, when the copy mode is set by operating the operation panel 7, the image information read by the two-color reading unit 1 is printed by the two-color printing unit 2.

On the other hand, when transmitting the read image information to the line, the transmission mode is designated on the operation panel 7. The image information read by the reading unit 1 is stored in the image information storage unit 4 after being subjected to a compression process by encoding in the encoding / decoding unit 3. When the reading of all pages is completed, the line is connected, and then the image information stored in the image information storage unit 4 is read to start the transmission.

Also, when printing the received image information, the image information is temporarily stored in the image information storage unit 4 and the image information is read from the image information storage unit 4 as in the transmission operation.

The operation of the present invention will be described in detail below with reference to the flow chart of FIG. In FIG. 2, when the power is turned on, the control unit 6 self-checks the system, checks for system abnormalities, and enters the standby state (step 35). In standby mode, mode selection is possible (step 3
6) When the copy mode is selected (step 41), 2
You can make a color or single color copy. If there is already received image information, the received data is printed (step 37). If a copy operation is interrupted during this printing (step 38), a normal copy operation becomes possible (step 39). When the copying by the interrupt is completed, the interrupt is released to return to the print mode before the interrupt. When printing of all pages in the print mode is completed, the state of step 35 is returned to.

If it is determined in step 35 that the mode is neither the copy mode nor the already-received mode, the process proceeds to step 42 and the reception acceptance state is set. Then, after the possibility of reception is confirmed by the other party (step 43), reception of image information is started (step 41). At this time, as in the process indicated by the broken line, even during reception, the reading unit 1 and the printing unit 2
Is not used, the copy operation can be performed. As described above, the copying operation can be performed even during reception or printing, and it is possible to maximize the compatibility of the copying function and the electric transmission function.

In the above embodiment, the two-color machine is described as an example, but the present invention can be applied to a single color copying power transmitting apparatus or a multicolor copying power feeding apparatus of three or more colors. In this case, each of the two-color reading unit 1 and the two-color printing unit 2 shown in FIG. 1 may be changed to a single color or a multicolor of three or more colors.

FIG. 3 shows a second embodiment of the present invention. The same reference numerals are used for the same parts as those in FIG. In the multicolor copying apparatus having the electric transmission function, the image information from the two-color reading unit 1 is
A color separation circuit 15 for separating the color into B and B, and a color separation circuit 15
The color conversion circuit 1 which sends the image information of the two colors to the two-color printing unit 2 and sends it to the two-color printing unit 2 together with the color conversion area information from the area detection circuit 17 when the color conversion processing is requested.
It is configured to have 6.

FIG. 4 is a detailed circuit diagram of the color conversion circuit 16, in which inverters 161, 16 for inverting and outputting the A color input are provided.
2, switch A 163 for selecting and outputting any one of A color input, output of inverter 161, and ground line
And a switch 164 for selecting and outputting any one of the output of the inverter 162, the A color input, the B color input, and the ground line.
It is possible to obtain 12 kinds of conversion modes shown in Table 1 by appropriately switching

[Table 1]

In the above configuration, when the A color in the area is converted to the B color, the conversion mode No. Equivalent to 1,
The output of the area detection circuit 17 connects the switch 163 to the m terminal and the switch 164 to the O terminal. Outside the area, the switch 163 is connected to the k terminal and the switch 164 is connected to the Q terminal. In other conversion modes, the switch 16 is also used according to Table 1.
Switch 3 and 164. In the table, symbols A and B
"-" At the upper part of the column indicates white / black inversion of the A and B color data, that is, the state of white characters.

FIG. 6 shows a third embodiment of the present invention, and FIG.
The color conversion circuit 16 in FIG. The switching circuit 18, as shown in FIG.
A switch 181 for switching between color input and ground line,
It is composed of a switch 182 for switching between the B color input and the ground line.

In the above construction, when the manuscript mode is instructed from the operation panel 7, the manuscript processing mode is entered. In this mode, when the original is being read, for example, when B color is the area designation color, the portion surrounded by B color is processed. The flow of image data is similar to that in the copy mode, but the image data is processed when the image data passes through the switching circuit.

For example, if printing is not performed when the image data has a level of 0, the following processing is performed inside and outside the area. (I) When printing only in the area The switch 181 is set to the left inside the area and to the right outside the area by the detection signal of the area detection circuit 17. The switch 182 is on the right side. (Ii) When only the area is not printed The switch 181 is set to the right side inside the area and to the left side outside the area by the detection signal of the area detection circuit 17.

By operating as described above, it becomes possible to process the original in the area. In addition, in FIG. 4 and FIG. 6, one of the two colors is deleted, or one color is applied,
Alternatively, it is possible to perform an operation such as replacement.

[0021]

As described above, according to the multicolor copying apparatus having the electric transmission function of the present invention, the multicolor image signal is encoded and modulated and transmitted to the line, and the multicolor image signal is received from the line. And a control unit for controlling the copying operation performed by the document reading unit and the printing unit, and the transmission / reception operation performed by the transmission / reception unit, and the control unit is a multicolor read by the document reading unit. The image signal or the multicolor image signal received by the transmitting / receiving unit is temporarily stored in the memory, then read from the memory and transmitted from the transmitting / receiving unit, or printed by the printing unit, and the copying operation is interrupted while reading from the memory. At this time, the read operation from the memory is interrupted to execute the copy operation, and when the copy operation is completed, the interrupted read operation from the memory is restarted. Enables simultaneous use of the functional and electrical transmission function, it is possible to perform both functions efficiently. Therefore, operability can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing operation according to an embodiment.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a circuit diagram showing details of a color conversion circuit according to a second embodiment.

FIG. 5 is a block diagram showing a third embodiment of the present invention.

FIG. 6 is a circuit diagram showing details of a switching circuit according to a third embodiment.

[Explanation of symbols]

1 2-color reading part 2 2-color printing part 3 Encoding / decoding part 4 Image information storage part 5 Modulator / demodulator / network control part 6 Control part 7 Operation panel 15 Color separation circuit 16 Color conversion circuit 17 Area detection circuit 18 Switching circuit

Claims (1)

[Scope of utility model registration request] 1. A copying apparatus comprising a document reading unit for reading a multicolor document and generating a multicolor image signal, and a printing unit for printing an image according to the multicolor image signal. A transmission / reception unit that encodes and modulates and sends out to a line, receives and demodulates and decodes a multicolor image signal from the line, a copy operation performed by the document reading unit and the printing unit, and the transmission / reception unit. A control unit for controlling a transmission / reception operation performed, wherein the control unit temporarily stores the multicolor image signal read by the document reading unit or the multicolor image signal received by the transmission / reception unit in a memory, Read from the memory and send from the transmitting / receiving unit, or print from the printing unit, and read from the memory when the copying operation is interrupted while reading from the memory A multicolor copying apparatus having a transfer function, characterized in that the operation is interrupted to execute the copying operation, and the interrupted reading operation from the memory is restarted when the copying operation is completed.