JPS6097773A - Image forming device - Google Patents

Abstract

PURPOSE:To adjust the character starting position of irregular character strings and to obtain a copy easy to read by discriminating the paragraph of the read character strings and by controlling the print starting position of the paragraph of the character strings so that it will be different from the pring starting position of other character strings. CONSTITUTION:After image data which are read by a line sensor are stored in a temporary memory once, the data are added to a comparator and receive the binary decision. When the total data of the image element line are decided to be white, a counter counts up. When this count value increases and becomes the prescribed value, it is decided to be a character line interval. Then, a line-interval detecting signal generates from the count, and the counter is reset. When the character line is detected, whether it is the starting line at the time of heading of an original or not is decided by a shifter controlling part, in addition, the starting line of a sentense is decided to be the switching time of the paratraph, and a paragraph signal is set. When the print starting position of the paragraph of the character string is decided, the print starting is executed by shifting one character from the pring starting position of other character strings.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image forming apparatus having an image processing function.

[Prior art]

Conventionally, many devices of this type copy the image information read from the original as they are, and only limited image processing functions such as a variable magnification function have been reported.

〔the purpose〕

By introducing a trimming system and providing a new trimming technology that had not been done before, it has been given a new function called Sei 1. That is, the present invention adjusts the character start positions of character strings such as handwritten characters whose character start positions are irregular, thereby providing an easy-to-read copy.

That is, it has a reading device and a determining means for determining the paragraph of the character string read by the reading device, and controls the printing start position of the paragraph of the character string to be different from the character start position of other character strings. It is characterized by this.

〔Example〕

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

Reference numeral 1 denotes a reading unit (reader) that reads image information of a document and processes it; 2 a document cover for holding the document; 6 a platen table for placing the document;
4 is an exposure lamp for irradiating the original, 5 to 7 are mirrors for guiding the optical path, 8 is an imaging lens for forming an image of the original, and 9 is a light receiving element for digitally reading image information. (Line sensor), 10 is an image processing section for processing information read by the light receiving element 9. 11
is an output device (printer) for outputting the image information obtained by the reading section 1, and in this embodiment, a laser beam printer is used. 12 is a laser scanner for converting the image information read by the reader 1 into a laser beam; 16 is a laser scanner for reflecting the laser beam;
15 is a developing device for developing the latent image on the photosensitive drum 14, 17 is a conveyor belt for conveying the paper from the paper feed cassette 16, and 18 is for discharging the paper. This is paper discharge row 2.

With the above configuration, the document cover 1 is raised, a transparent document is set on the platen table, the optical systems 4 to 9 scan, and image information is sequentially read by the line sensor 9, which is a light receiving element. The resolution of the line sensor depends on the size of the character, but in the case of handwritten characters it is 10 blt per imm (
Leprosy is enough.

Of course, a resolution higher than this may also be used. The read image information is subjected to processing described later in the image processing section 10. In the output device 11, a laser beam is modulated based on a signal from the image processing section 10, and the laser beam is scanned by a laser scanner 12, and an image is formed and exposed on a uniformly charged photoreceptor drum 14. Then, operations such as development and transfer are performed, and the image is output.

FIG. 2 is a diagram showing the state before and after a handwritten character manuscript is processed by the apparatus of this example, and the circles represent characters. The same figure (a
1 is the original, and (b) of the same figure is the processed copy. (a)
The character start position of each character line is different, but
After image processing, the character start positions other than the beginning of the paragraph are aligned and printed at a fixed position, such as (1,). Also, the character start position of each paragraph is the first (first character line) paragraph. is aligned to the starting position of the character UH.

The above image processing will be explained in detail according to the block diagram shown in FIG. As mentioned above, in the reading section, the optical system scans, that is, the line sensor reads the document one by one. After this, the temporary memory, comparator,
In the thick control section and the memory section, part of the image information, that is, the image data, read by the 0 line cell forming the image processing section is stored in a temporary memory (batzer memory). This image take is judged for binarization by a comparator in the next stage. That is, a determination is made as to whether the background is white (0) or black (1). In this binary output, if all the data of one pixel row read by the line sensor is determined to be a white background, that is, if there is no character on the one line read by the line sensor, this image data is counted as a white background signal. up. This white background signal continues continuously, and the counter value increases, and the value of rirI is increased. A τ line spacing detection signal is generated from the counter and the counter is reset. This line spacing detection signal is output at the start of a black background line after the occurrence of a predetermined white background line. However, while counting the white background signals, the black background signals (
If a black pattern portion) is not detected, the counter is reset using the black background signal as a reset signal, and the already counted white background signal is determined to be part of the character signal. Since this white background signal is a character, it is output to the memory unit.Also, if line spacing is not detected in the counter unit, a white background signal of a predetermined value is output to the memory unit to create a blank space between lines, and this white background signal is output to the memory unit. Based on the signal, a shifter control signal is output to the next stage shifter control section in order to control the character start position of the next detected black background signal. Further, when the comparator determines that the black background signal is a black background signal, the black background signal is output to the thick control section for character start position control.

Another method for detecting the line spacing is that in a document using paper with one line or the like, if a black background signal is continuously generated by the binarization detection by the comparator, it can be determined that there is a line spacing. That is, because there is a gap between the characters written in one character line, the black background signal is not continuous, but in ruled gauze, the black background signal is continuous, and this can be used to detect the line spacing.

Next, the thick control section will be explained with reference to FIG. The shifter control section sets the character start position. In the figure, reference numeral 400 indicates whether or not a line spacing detection signal is generated between character strings of the original document, and the generation of the line spacing detection signal is regarded as the occurrence of a character line. Since the first line of a character is often written with an open space at the top of the paper, a line spacing detection signal is generated, which is regarded as the occurrence of a character, and the process goes to 401.
Reference numeral 401 checks whether or not this is the starting line at the beginning of the document, that is, the first character line, and the determination is made based on whether or not memory (2), which will be described later, is set.

If it is the first row, the memory is not set, so the process goes to 402 and the address value to be shifted is set to 0.

This shift value is the value by which the string is moved to align the beginning positions of the string. Since the first line is a paragraph, the shift value is 0 because it is based on the character start position of the first paragraph. At step 403, the character start position of the first line, that is, the black background occurrence address value is set in the memories (1) and (2). Here, Mesori■ is the first
This is used to store the address value of the starting position of the character in the row, and it is a fixed value. The memory ■ stores the address value at the character start line, and it is checked whether a paragraph change has occurred by comparing the address of the next character start. At the start line, the values of memory ■ and memory ■ are equal. Although 404 is the start line of a sentence, it is determined that it is a paragraph change time, and a paragraph signal is set.

Therefore, since this is the initial stage, the black background generation addresses (memories ①, ②) are stored unchanged in the next memory step and become K. If the memory ■ is set when reading when the next line gap detection occurs, proceed to step 410, and compare this read value with the value in the memory ■ of the start address of the character line of the previous line that has already been set. It will be done. In step 411, it is determined whether the difference between the read address value and the value in memory (2) is 6° or more. This value of 30 is when one character is scanned with a resolution of 3 [] bits, and if it is 30 or more, it means that there is a gap of one character, so the document creator's paragraph switching (Figure 5 (A) ), or the continuation of the sentence after switching (Figure 5 (equal). In Figure 5, I□ to 14 each represent one line in the sentence, and al+a2 are el and '21, respectively.
Represents the difference between the character start addresses of /3 and 14.

Of course, this value of 60 is not a fixed value, and may be determined depending on the resolution of the line sensor and the size of the characters. Suppose there is a sentence like the one shown in Figure 6.
Assume that 5 is one line in the text, and the numbers in parentheses represent the character start address of each line.

If Ll is the first line, the character start address 50 of Ll is stored in memory ■ and memory ■. Now, if we are comparing L2, the difference between the read address value and memory ■ is 50. -10=40, so it's 60 or more, so it's 4
Proceed to step 12 and determine whether there is a paragraph signal power (Ll
Since the paragraph signal has already been set at 404, the process advances to 41'5, and since the paragraph signal has been set, the process goes to 41'5.
The process advances to 13 to reset the paragraph signal, and the process advances to 415 to determine whether or not there is a paragraph signal. In this case, since the paragraph signal has been reset in 413, the process proceeds to 416, and the character start address 10 of L2 is set in the memory ①. 417
Shift value to align the beginnings of sentences = memory ■ - memory ■
-30 is calculated, the process proceeds to 420, and the text is shifted by the calculated shift value. In this case, 5O-10-30=
10, and when the left edge is set to 0, it is shifted to the right by 10 addresses.

In addition, in the case of L3, the address difference is 110-16 with 411.
Since 1=6 and less than 30, proceed to 415. Since the paragraph signal has been reset at L2, the process proceeds to 416 and 417, and the shift value becomes 5O-16-30=4. 41 for L4
1, the address difference is 116-531=37, which is 30 or more, so proceed to 412. The paragraph signal is L2. Since it remains reset at L3, proceed to 414, set the paragraph signal, and proceed to 41
8. Proceed to 419. Since the shift value is calculated as 2 memory (2) - memory (2), 5O-53=-3, which is a shift of 6 addresses to the left. If switching continues for two or more lines as in L5, the address difference is 411 and is 53-45=8, which is 60.
Since it is less than 415, proceed to 415. Since the paragraph signal is set at L4, proceed to 418 and 419, and the shift value is 5O-4.
5=5. Once the print character start position is determined in this manner, the shift value determined in 417 or 419 is used to form a character without any disturbance at the same shift value until the line spacing detection signal is generated.

As described above, the text with the character start position adjusted is stored in the memory unit (image memory) for each line (1 pixel line),
It is output by an output device (LBP etc.).

Further, although this clean copy of adjusting the character start position is special compared to a normal copy, it may be possible to perform a selection operation so that a normal copy can also be made. Like regular digital copiers, it is also possible to change the size of a fair copy.

In addition to storing data in which character start positions are arranged in the image memory, it is also possible to arrange the beginning of a character string by changing the output timing for each character line when outputting from the image memory.

Furthermore, by adding a character pattern recognition device, it is also possible to read each character in a character string of a document, code it, call out the necessary characters from a kanji ROM, etc., and copy them in print.

If you do this, your handwritten characters will be very clean and easy to read.You can also use Gothic fonts or
It is also possible to select Mincho typeface, etc.

Furthermore, by adding a document skew detection device, even if the document is placed in a skewed manner, it is possible to perform a fair copy by correcting the coordinates of the document.

[Effects] As described above, the present invention determines the character string of the read image information and controls the printing start position of the character string, so it is possible to provide an easy-to-read copy. Also, when a user creates a sentence,
It is necessary to pay attention to the starting position of line break characters, and copying results in a more orderly text, which also contributes to improved efficiency.

[Brief explanation of drawings]

FIG. 1 is a sectional view of this device, FIG. 2 is a diagram showing the copying result by this device, and FIG. 6 is a block diagram showing the operation of this device.
Figure 4 is a flowchart of the thick control section in Figure 6, Figure 5 is a diagram showing paragraph switching, and Figure 6 is a diagram representing text to explain character start position control.

Claims (1)

[Claims] The present invention is characterized by comprising a reading device and a determining means for determining the paragraph of the character string read by the reading device, and controlling the printing start position of the paragraph of the character string to be different from the character start position of other character strings. image forming apparatus.