JPH0350575A - Copying and printing device - Google Patents

Abstract

PURPOSE:To accomplish image compositing and printing with a low-priced device by placing an original on a liquid crystal display unit and printing the direct composite image of a displayed image on the liquid crystal display unit and the image of the original. CONSTITUTION:An interface circuit 2 receives the printing data of a host device 1, and the printing data received by the interface circuit 2 and the printing data generated in a control circuit 3 are displayed on the liquid crystal display unit 4 under the control of the control circuit 3. By setting the original 6 on the liquid crystal display unit 4, displaying the printing data generated in the control circuit 3 or the printing data received by the interface circuit 2 on the liquid crystal display unit 4 and performing processing for copying and printing by the control circuit 3, the composite image is formed on the photosensitive drum 10 and a printing part 7 prints the image. Thus, the composite image is printed at a low cost.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a copy printing device, and particularly to an electrophotographic method for printing an image obtained by combining an original such as a document and binary image data handled by a digital circuit. The present invention relates to a copy printing device.

[Conventional technology]

A conventional electrophotographic copy printing device that prints a composite image of an original such as a document and binary image data handled by a digital circuit has the structure shown in Fig. 4, and as shown in Fig. 5. Operate. That is, the original 3l placed on the glass 29 is read b (reference numerals 37 to 39) by the scanner 28, and this is converted into binary image data and stored in the image memory 27 (
Reference numeral 40), then the image data sent from the host device 24 and received by the interface circuit 25 is sent to the control circuit 2.
6, the binarized image data of the original is stored in the image memory 24 in a superimposed manner (reference numerals 41 to 42).
By doing this, an image is synthesized on the binarized image data, and then the combined image data is read out in the image memory 27 by the control circuit 26, and printed on a paper by the printing unit 39, and the combined image data is synthesized. The image is being printed (reference numeral 43).

[Problem to be solved by the invention]

The above-mentioned conventional copying/printing device uses a scanner to read an original image of a document, converts it into a binary image, and combines it with the print data on the image memory, so an image memory is required. Furthermore, since the control circuit and the program for its operation are complex and large-scale, it is difficult to achieve low cost. Furthermore, when attempting to copy and print only an original image such as a document, this is converted into a binary image, which has the disadvantage of slowing down the copy printing speed.

[Means to solve the problem]

The copy printing apparatus of the present invention includes an interface circuit for receiving print data from a host device, a liquid crystal display for loading a document and displaying a printed image, and a display function for displaying the print data on the liquid crystal display. and a control circuit for controlling a printing operation, so that the document and the image displayed on the liquid crystal display are printed together.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

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

As shown in FIG. 1, an interface circuit 2 is in charge of an interface 7 for connection with a host device 1, and receives print data. The liquid crystal display 4 displays print data received by the interface circuit 2 and print data generated by the control circuit 3 under the control of the control circuit 3. When in the non-display state, it transmits light like glass. The control circuit 3 controls the display operation of print data on the liquid crystal display 4 and the printing operation of the character section 7. In the control circuit 3, the operation shown in the flowchart of FIG. 3 is executed. As shown to the passer, the printing unit 7 forms an image of the original 6 on the photosensitive drum 10 through a mirror 8 and a lens 9, and presses a button on the charging unit 11 to transfer the image of the original 6 to the photosensitive drum 10, which has been charged in advance.
The potential of O is changed depending on the brightness and darkness of the image, and the developing section 12>
The original image is then transferred to printing paper in a transfer unit l3 to print the original image.

In the operation of this embodiment described above, first, a printed original 6 such as a document is sectioned onto the liquid crystal display 4.

This completes the initial setup of the device (reference number 19).
, waits for the start of print processing (reference numeral 20).

When the control circuit detects the operator's print processing start operation and/or print instruction operation (reference numerals 20 and 21), the control circuit 3 automatically generates the print data received by the print data box or the interface circuit. Data on LCD display 4
(reference numeral 22). At this point, as shown in FIG. 2, the original 6 and the display on the liquid crystal panel 4 are prepared. Next, the control circuit 3 performs copy printing processing (reference numeral 2
3), the composite image 18 of FIG. 2 is formed on the photosensitive drum IO, and the printing unit 7 prints this.

〔Effect of the invention〕

As explained above, the copy printing apparatus of the present invention places an original on the liquid crystal display and prints an image by directly combining the image displayed on the liquid crystal display with the image of the original, so it requires a low-cost apparatus. It has the effect of being achievable.

Further, even when copying and printing only an original such as a document, since the original image is directly transferred to the photosensitive drum and printed, there is an effect that high-speed copy printing can be performed. Furthermore,
When performing image composite printing, there is also the advantage that the operator can directly view the display on the liquid crystal display and confirm the combined print data.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the structure of an embodiment of the present invention, FIG. 2 is a perspective view for explaining the method of combining image data in the embodiment of FIG. 1, and FIG. FIG. 4 is a block diagram showing the construction of an example of a conventional copying and printing apparatus, and FIG. 5 is a flowchart showing the operation of the example shown in FIG. l, 24... Upper device, 2, 25...
Interface circuit, 3, 26... Control circuit, 4... Liquid crystal display, 6, 3l... Document, 7, 39... Printing section, 8 ...Gler 9...Lens, lO...Photosensitive drum, l1...Charging section, l2...゛゜・゜Developing section, l3... ... Electrostatic transfer section, 14 ... Drum cleaner, l8 ... Combined image, 27 ...
...Image memory, 28...Set number +-4-90.
...-H-7su younger brother 1 Kendai do Tomoe 3 Zu disciple Yozu younger brother 5 厠

Claims (1)

[Claims] The apparatus includes an interface circuit for receiving print data from a host device, a liquid crystal display for displaying a printed image with a document loaded thereon, and a control circuit for controlling display of the print data on the liquid crystal display and printing operation. . An electrophotographic copy printing apparatus, characterized in that the document and the image displayed on the liquid crystal display are combined and printed.