JPH0574065U - Multicolor copying machine with electric transmission function - Google Patents

Abstract

(57) [Summary] [Objective] The object of the present invention is to enable the copying function and the electric transmission function to be used at the same time, and to perform both functions efficiently. [Structure] The multicolor copying machine having the electric transmission function of the present invention is
When the printing unit 2 is performing a copy operation by the control unit 6 based on the multicolor image signal read by the document reading unit 1, the transmitting / receiving unit 5 is prohibited from receiving the multicolor image signal from the line. is doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a multicolor copying apparatus having a transfer function, and more particularly, to a multicolor copying apparatus having a transfer function for shortening processing time and improving operability by making copy processing compatible with transfer processing. Regarding

[0002]

[Prior Art]

 As a conventional two-color copying machine, for example, there is one shown in JP-A-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, thereby an original reading unit. And a two-color printing section for performing two-color printing on recording paper using two sets of ink donor sheets of different recording colors.

Such a device requires a small amount of electric power and can be downsized as compared with a conventional large device that performs toner development. In addition, for example, by using black and red ink, it is possible to use black for normal recording and red for important recording portions.

[0004]

[Problems to be solved by the device]

 However, according to the conventional two-color copying apparatus of the related art, even if the transfer function is added to the copy function, both functions share the original reading unit or the printing unit, so that the copying operation cannot be performed during the transfer operation, for example. There is an inconvenience.

[0005]

[Means for Solving the Problems]

 In view of the above problems, the present invention encodes and modulates a multicolor image signal to a line to enable simultaneous use of the multicolor copying function and the multicolor transmission function, and outputs the multicolor image signal from the line. It is equipped with a transmission / reception unit that receives and demodulates and decodes data, a control unit that controls copying operations performed by the document reading unit and the printing unit, and transmission / reception operations performed by the transmission / reception unit. Provided is a multicolor copying apparatus having a transmission function that prohibits a transmission / reception section from receiving a multicolor image signal from a line when performing a copying operation based on a multicolor image signal read by a document reading section. It is a thing.

[0006]

【Example】

 Hereinafter, a multicolor copying machine having a transmission function of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, which includes 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. An encoding / decoding unit 3 that encodes the information read by the two-color reading unit 1 or decodes the information from the storage unit 4, and an image that is encoded and compressed by the encoding / decoding unit 3. An image information storage unit 4 for storing information, and image data of the image information storage unit 4 is modulated and sent to a line, or information from the line is demodulated and output to the storage unit 4, and input / output to / from the line It comprises a modulator / demodulator / network control unit 5 for controlling the above, a control unit 6 for controlling each of the above circuits, and an operation panel 7 for setting various control conditions in addition to mode switching.

In the above configuration, 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 operation panel 7 specifies the transmission mode. The image information read by the reading unit 1 is stored in the image information storage unit 4 after being compressed by the encoding / decoding unit 3 by encoding. 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. ..

Hereinafter, the operation of the present invention will be described in detail with reference to the flowchart of FIG. In FIG. 2, when the power is turned on, the control unit 6 self-checks the system, checks for system abnormality, and enters the standby state (step 46). After this standby state, the copy mode (step 48) can be selected in step 47. If the copy mode is not selected, the process proceeds to step 49 and it is checked whether there is a reception request (step 49). If there is a reception request, it is checked whether the reception is possible (step 50). When the image information can be received, the image information is received and printed (step 51).

If a copying operation is interrupted during printing (not shown), the reading operation of the image information from the image information storage unit 4 is interrupted and the copying operation is executed. When the copying operation is completed, the reading operation from the image information storage unit 4 which has been interrupted is restarted, and the printing mode is restored. When all pages have been printed in the print mode (step 52), the line is disconnected (step 53) and the initial standby state is restored. On the other hand, if it is determined in step 50 that reception is not possible (during copying operation, paper jam, etc.), line connection is prohibited and the system is returned to the standby state.

As described above, the copying operation can be performed even during reception or printing, and it is possible to maximize the compatibility between the copying function and the electric transmission function.

In the above embodiments, the two-color machine is described as an example, but the present invention is also applicable to a monochromatic copying power transmitting apparatus and a multi-color 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, and 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 color separation circuit 15 for separating the image information from the two-color reading unit 1 into A color and B color, and the two-color image information from the color separation circuit 15 are provided. It has a color conversion circuit 16 for sending to the two-color printing unit 2 and sending it to the two-color printing unit 2 together with color conversion area information from the area detection circuit 17 when a color conversion process is requested.

FIG. 4 is a detailed circuit diagram of the color conversion circuit 16, in which any one of the inverters 161, 162 for inverting and outputting the A color input, the A color input, the output of the inverter 161, and the ground line is selected. And a switch 164 for selecting and outputting any one of the output of the inverter 162, the input of A color, the input of B color, and the ground line, and switching the switches 163 and 164 appropriately. Thus, 12 kinds of conversion modes shown in Table 1 can be obtained.

[Table 1]

In the above configuration, when converting the A color in the area to the B color, the conversion mode No. 1 in Table 1 is used. The switch 163 is connected to the m terminal and the switch 164 is connected to the O terminal by the output of the area detection circuit 17. 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 switches 163 and 164 are similarly switched according to Table 1. In the table, the symbols "A" and "B" provided with "-" above indicate white / black inversion of the A and B color data, that is, the state of white characters.

FIG. 5 shows a third embodiment of the present invention, in which the color conversion circuit 16 in FIG. 3 is replaced with a switching circuit 18. As shown in FIG. 6, the switching circuit 18 is composed of a switch 181 for switching between the A color input and the ground line, and a switch 182 for switching between the B color input and the ground line.

In the above configuration, 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 is the area designating color, the portion surrounded by B is processed. The flow of image data is the same as in the copy mode, but the image data is processed when the image data passes through the switching circuit.

For example, assuming that 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 side inside the area and to the right side 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 FIGS. 3 and 5, one of the two colors may be deleted, or one color may be given, or an operation such as replacement may be performed.

[0022]

[Effect of the device]

 As described above, according to the multicolor copying apparatus having the 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 demodulated and decoded. The control unit controls the copying operation performed by the document reading unit and the printing unit, and the transmission / reception operation performed by the transmitting and receiving unit, and the control unit is a multicolor image read by the printing unit by the document reading unit. When the copy operation is performed based on the signal, the transmission / reception unit is prohibited from receiving the multicolor image signal from the line, which enables the copy function and the electric transfer function to be used at the same time, and performs both functions efficiently. I can. 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 one 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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukoma Totsuka 2274 Hongo, Ebina City, Kanagawa Prefecture Fuji Xerox Co., Ltd.

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 copying 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 is configured such that when the printing unit is performing the copying operation based on the multicolor image signal read by the document reading unit, the transmission / reception unit is A multicolor copying apparatus having a transmission function, characterized in that reception of a multicolor image signal from the line is prohibited.