JPS6298967A - Original reader - Google Patents

Abstract

PURPOSE:To shorten the time for printing and transmitting by providing a monitor control means scanning an original without printing reproduction and transmission and a means selecting the printing reproduction and the transmission or a monitor control. CONSTITUTION:A line sensor, etc., are moved in terms of subscan in an original longitudinal direction to read out the overall original area. Based on coordinates where data changes from a white level to a block one, the position of the original is detected, and its inclination is detected from a degree of parallel. The density and size of the original are decided from the level of read-out data and the coordinates on the original, and data is stored at an address corresponding to a command in a memory. A CMD gives sense to necessary original information according to a command through a tenkey, decodes in order to select a read mode for stored information, and an oblique data, a density data, an original size data, a designated magnification and original size readout recommended cassette data out of a memory. Then each display displays them by flickering. prior to starting transfer, the original may be independently scanned and monitor-controlled. Thus the processing time can be shortened.

Description

[Detailed description of the invention] (branch) The present invention relates to a document reading device.

(Prior Art) Conventionally, there are known devices that read and transmit or print original documents. Alternatively, there are also known devices that detect the size of the document and control the magnification of the print. Therefore, you can get an idea of the size and skew of the original by making a trial copy.
There was an inconvenience that copy paper was wasted.

(Objective) The present invention is intended to eliminate the following disadvantages, and is to provide a method for reproducing or transmitting prints in an apparatus that has means for scanning a document and reproduces or transmits prints based on image data read by scanning. The document reading device has a monitor control means for scanning the document without any interference, and a means for selecting one of the print reproduction or transmission and the monitor control.

That is, for example, the position, inclination, and
The size, density, required copy paper size, magnification when copying at fixed size paper, etc. are determined by scanning the original and displayed on the operation panel, and can be displayed by the operator using a special key. This is performed only for input operations, and in the monitor mode, the original is scanned and scanning is stopped without printing or transmitting. Therefore, copy paper is not used, so there is no waste, and by inputting the start key without inputting a special key, the scanning for printing or transmission automatically starts after the above-mentioned scanning for discrimination. It is possible to save time.

(Example) Fig. 1 shows the operation display section of the copying machine, Fig. 2 shows a control circuit diagram, and Fig. 3 shows a flowchart of document information recognition and display.
101 is a segment display that can display the number of copies and the state of the original; 102 is a segment display that displays the magnification; 103 is a designated cassette display; 104 is a numeric keypad and mode key for setting the number of copies; 10
5 is a start key that starts the copy operation.

106 is a stepless magnification key that allows you to change and set the magnification in 1% increments; 107 is a regular magnification key that enlarges from A4 to B4; 108 is a key to select the upper and lower cassettes;
09 is the key to stop copying the set number midway, 1
10 is a special key (pre-scanning key).

The operator sets the original on the original glass surface and presses the special key 110, whereby only prescanning, which is one of the copying operations, is performed and the copying operation is stopped.

The operation will be explained below with reference to FIG. 2.3.

Reference numeral 300 in FIG. 2 is a computer having a memory storing a program for executing the flowchart in FIG. 3, which performs key input, display output, sequence output, and displays the number of sheets and magnification.

At step 200, keys 104, 106 and 108 are activated and the data is stored in memory. If the start key lo5 is pressed after that, the process returns to key entry 200 after executing the process of copy cycle 202. If a special key is pressed.

Blisscan at step 203 is executed, and even if the paper size is specified as small at step 200, the maximum area of the document placement surface is exposed and scanned. The position, size, etc. are individually determined based on the photoelectric conversion data of the document read by the scan and stored in the memory. 204 is a command waiting state. At step 204, if the user presses, for example, 鈥 (9) manually on the numeric keypad 104, the skew information of the document is displayed in symbol form on the sheet number display lot. The CMD 204 assigns meaning to the required document information using commands from the numeric keypad, and performs decoding to select a reading mode for the stored information. In response to the decoding of the command, 205 reads skew data, 206 density data, 207 original size data, and 208 reads cassette data recommended for the specified magnification and original size from the memory, and each flashes on the display 103. Depending on the command, multiple pieces of document information can be displayed simultaneously or alternately. Step 2 to display manuscript information
After 09, when the clear key is used to command the release, the display is cleared and the process returns to key entry 200.

In order to read the document information in step 203, a line sensor in the width direction of the document is provided (in this case, the photoconductor is irradiated with the document during copying), or one line of the width of the document is read and photoelectrically converted. Use line COD to convert into values and print. Then, a line sensor or the like is moved in the longitudinal direction of the document in a sub-scanning direction to read the entire document, and the resulting coordinates (x, y) of the data changing from white to black level are determined.
The position of the original is detected based on , the slope is determined from the parallelism of each position, and the density is calculated by averaging each level of the read data.
1-1, the size of the document is determined from the coordinates of the four edges of the document, and each data is stored in the address corresponding to the command in the memory.

Incidentally, monitor control can also be selected by aiming the numeric keypad or by aligning with the numeric key 104.

Furthermore, even when two originals are placed on a direct stacking table in double-sided copying, each original can be scanned separately and monitored and controlled before copying starts.

[Brief explanation of drawings]

Fig. 1 is a Y-plane view of the operation display section, Fig. 2 is a display control circuit diagram, and Fig. 3 is a flowchart of key manual display.
01 is a display, 104 is a numeric keypad, and 110 is a special key.

Claims (1)

[Claims] A device having means for scanning a document and reproducing or transmitting a print based on image data read by scanning, comprising: a monitor control means for scanning the document without reproducing or transmitting the print; and means for selecting one of the monitor controls.