JPH0686057A - Document picture forming device - Google Patents

Abstract

PURPOSE:To output the document whose column number for a single line is optional and which is prepared on the side of a host of a computer, a word processor, etc., as a beautiful picture. CONSTITUTION:When the reading of a printed document is instructed to a floppy disk drive(FDD) 1a from a floppy disk(FD), code data of the printed document is read to be developed as characters by a character generator 7 and developed as a picture on a bit map memory in RAM 8. When a document file size (a) is coincident with a paper size (b), the picture is outputted to a printer 10 as it is and printed but when the document file size (a) is larger than the paper size (b), the picture element and the character interval of font data of the characters in a main scanning direction are thinned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document image forming apparatus such as a printer or a digital copying machine for forming a document image on a recording sheet based on a character code from a host such as a computer or a word processor.

[0002]

2. Description of the Related Art Conventionally, in this type of document image forming apparatus,
When code data is sent line by line from a host side such as a computer or a word processor, a document image is formed line by line according to an instruction from the host side. Therefore, when the amount of code data per line on the host side exceeds that on the printer side, excess code data may be transferred to the next line and the document may be disturbed. The code data amount of must be larger than that on the host side.

[0003]

However, in the above-described conventional document image forming apparatus, the code data amount per line on the host side is the designated sheet on the printer side for the convenience of document editing on the host side such as a computer or a word processor. When the size is exceeded, there is a problem in that the characters protruding laterally are not printed. For example, as shown in FIGS. 5 and 6, when the vertical direction is A4 size but the horizontal direction exceeds A4 size, the characters protruding in the horizontal direction as shown in FIG. 8 are not recorded in A4 size. Also,
This document can be recorded so that it fits in the B4 size, but in this case, a blank is generated in the vertical direction, which makes it unpleasant.

Here, there is known a method of automatically scaling the output size according to the paper size in a computer, a word processor or the like. However, in this method, the vertical and horizontal scaling is performed at the same magnification, so that the paper size is also changed. There is a problem in that there is a margin for the size, which makes it unsightly.

In view of the above-mentioned conventional problems, the present invention provides a document image forming apparatus capable of outputting a document having a desired digit number of one line created on the host side such as a computer or a word processor as a beautiful image. The purpose is to

[0006]

In order to achieve the above-mentioned object, the first means reads a character code of a document from the outside, converts it into a character image, and records it on a recording paper. When the characters in the line direction are projected from the recording paper, a means for reducing the main scanning direction of the characters is included so that the characters fit in the recording paper.

A second means is characterized in that, in the first means, the reducing means reduces the main scanning direction of characters and the character interval.

A third means is characterized in that, in the first or second means, the reducing means uniformly reduces the main scanning direction of characters and the character spacing.

In a fourth means, in the first to third means, the characters of all the lines in the main scanning direction and the character spacing are arranged so that the characters of the line most protruded from the recording paper by the reducing means are contained in the recording paper. Is uniformly reduced.

[0010]

With the above-described structure, the first means reduces the main scanning direction of characters in the line direction of the document from the outside so that the characters can be accommodated in the recording paper when the characters run off the recording paper from the outside. It is possible to output a document with an arbitrary digit number of one line created on the host side as a beautiful image.

The second means reduces the main scanning direction of characters and the character spacing, so that the host side such as a computer or a word processor can freely create a document regardless of the setting format and size of the document. You can

The third means uniformly reduces the character main scanning direction and the character spacing, so that a beautiful image without distortion in the row direction can be output.

The fourth means uniformly reduces the main scanning direction and the character spacing of the characters of all the lines so that the characters of the line most protruding from the recording paper fit within the recording paper, so that distortion is generated line by line. It can be output as a beautiful image.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing an embodiment of the document image forming apparatus according to the present invention, FIG. 2 is a perspective view showing the printer of FIG. 1, and FIG. 3 is a flow chart for explaining the operation of the document image forming apparatus of FIG. 4, FIG. 4 is an explanatory diagram showing the reduction processing in the main scanning direction, FIG. 5 is an explanatory diagram showing the original document size, FIG. 6 is an explanatory diagram showing the paper size, and FIG. 7 is an explanatory diagram showing the output image.

First, a floppy disk (F
D), hard disk (HD), optical disk (OD)
The document data recorded in is read by the FD drive device (FDD) 1, HDD 3, and ODD (not shown), respectively. FDD1 and HDD3 are read by F
It is controlled by the D controller (FDC) 2 and the HDC 4, and a series of control from this reading to printing is performed by the CPU (central processing unit) 5. The program of the CPU 5 is stored in the ROM (Read Only Memory) 6 in advance.

This code data is developed as a character font by a character generator (CG) 7 and is also developed as an image on a bit map memory in a RAM (random access memory) 8. The image developed on the bitmap memory is displayed on the screen of the display (DISP) 9 and also recorded on the recording paper by the printer 10.

As the printer 10, for example, an electrophotographic laser printer as shown in FIG. 2 is used. The image data is modulated by an LD unit 11 having a laser diode (LD) and emitted as a laser beam. The laser beam is collimated by a cylinder lens 12 and then deflected by a polygon scanner 13 at a constant angular velocity in the sub-scanning direction. The polygon scanner 13 has a polygon mirror and a polygon motor. The laser beam deflected at a constant angular velocity is corrected by the fθ lens 14 so as to be deflected at a constant velocity, and then is guided by the mirror 15 onto the photoconductor 16 so that the photoconductor 16 is exposed. An electrostatic latent image is formed on. This electrostatic latent image is developed by a known electrophotographic method and recorded on recording paper.

Next, the operation of the above embodiment will be described with reference to FIGS. In FIG. 3, for example, FD to FDD
When the CPU 5 gives an instruction to read the print document for 1 (step S1), a list of all documents in the FD is read and displayed on the screen of the display 9 (step S2). When a print document is designated from this list (step S3), the code data of the print document is read and developed as characters by the character generator 7, and is also developed as an image on the bitmap memory in the RAM 8. To be done.

Then, the format condition such as the designated document size (that is, paper size) developed on the bit map memory, the character size, the character interval, the number of characters in a line is compared with the data recorded in the FD (step S4). ). Then, when the document file size a and the paper size b match, the data is output to the printer 10 as it is for printing (step S6), but when the document file size a is larger than the paper size b, characters in the main scanning direction are printed. The pixel of the font data and the character spacing are thinned out (step S
5) output to the printer 10 for printing (step S
6).

This thinning-out process is performed by uniformly reducing the characters protruding from the paper size b in the main scanning direction in the main scanning direction so that the characters fit within the paper size b, and is not normally performed in the sub scanning direction. . Figure 4
The reduction process in the main scanning direction will be described with reference to FIG. 9A. First, when the original image data is written on the photoconductor 16 at the same pitch, an equal size image is formed.

On the other hand, for example, if the length of 10 pixels of the original image data is written on the photosensitive member 16 at a pitch equal to 8 equal to 8
It can be reduced to 0%. Similarly, when the length of 10 pixels of the original image data is written on the photoconductor 16 at a pitch obtained by dividing the length of 10 pixels into 14 equal parts, 14% can be written.

Here, when there is no original image at the position divided into 8 equal parts or 14 equal parts, it is assumed that the original image exists as shown in FIG. 4B (virtual sample point), and the virtual sample point It can be obtained from the data before and after. That is, let r be the distance between the point of the previous data and the virtual sample point (provided that the accuracy for obtaining r is 0, 0.25, 0.5,
The closest point is 0.75. ), FIG.
By substituting the value shown in (e) into the equation shown in FIG. 4 (c), the data at the virtual sample points can be obtained as shown in FIG. 4 (d).

Therefore, in the case of being created in A4 size as shown in FIG. 5 so that 1.5 to 5 characters protrude in the main scanning direction of A4 size, 5 characters should fit within the A4 size shown in FIG. Printer 1 with uniform reduction in the main scanning direction
When the output is 0, it is possible to perform recording so that the original image size is accommodated in A4 size paper as shown in FIG.

[0024]

As described above, according to the first aspect of the invention, in the document image forming apparatus for reading the character code of the document from the outside, converting the character code into the character image, and recording it on the recording paper, When a character protrudes from the recording paper, a means for reducing the main scanning direction of the character is provided so that the character fits inside the recording paper. Therefore, the number of digits in one line created on the host side such as a computer or a word processor is arbitrary. Can be output as a beautiful image.

According to a second aspect of the present invention, in the first aspect of the present invention, the reducing means reduces the main scanning direction of characters and also reduces the character interval, so that the document setting format on the host side such as a computer or a word processor. Documents can be created freely regardless of size or size.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described above, since the reducing means uniformly reduces the main scanning direction and the character spacing of the characters, it is possible to output a beautiful image without distortion in the row direction.

The invention according to claim 4 is the invention according to claims 1 to 3.
In the invention described above, since the reducing means uniformly reduces the main scanning direction and the character spacing of the characters of all the lines so that the characters of the line most protruding from the recording paper fit within the recording paper, there is no distortion for each line. It can be output as a beautiful image.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a document image forming apparatus according to the present invention.

FIG. 2 is a perspective view showing the printer of FIG.

FIG. 3 is a flowchart for explaining the operation of the document image forming apparatus of FIG.

FIG. 4 is an explanatory diagram showing reduction processing in a main scanning direction.

FIG. 5 is an explanatory diagram showing an original document size.

FIG. 6 is an explanatory diagram showing paper sizes.

FIG. 7 is an explanatory diagram showing an output image of this embodiment.

FIG. 8 is an explanatory diagram showing an output image of a conventional document image forming apparatus.

[Explanation of symbols]

 1 FDD (Floppy Disk Drive) 3 HDD (Hard Disk Drive) 5 CPU (Central Processing Unit) 7 CG (Character Generator) 8 RAM (Random Access Memory) 10 Printer

[Procedure amendment]

[Submission date] April 2, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 5]

[Figure 3]

[Figure 7]

[Figure 6]

[Figure 8]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B41J 19/64 9212-2C 21/00 Z 8703-2C G02B 26/10 A G06F 3/12 V 15 / 62 325 A 8125-5L 15/66 355 A 8420-5L

Claims (4)

[Claims] 1. In a document image forming apparatus for reading a character code of a document from the outside, converting it into a character image, and recording it on a recording sheet, when a character in a line direction of the document is protruded from the recording sheet, it is stored in the recording sheet. A document image forming apparatus comprising means for reducing the main scanning direction of characters as described above. 2. The document image forming apparatus according to claim 1, wherein the reduction unit reduces the main scanning direction of characters and reduces the character spacing. 3. The document image forming apparatus according to claim 1, wherein the reducing unit uniformly reduces the main scanning direction of characters and the character spacing. 4. The reducing means uniformly reduces the main scanning direction and the character spacing of the characters of all the lines so that the characters of the line most protruding from the recording paper fit within the recording paper. Item 5. The document image forming apparatus according to any one of items 1 to 3.