JP2000184163A - Picture data transmitter and picture data receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picture data transmitter and a picture data receiver which can quickly start the print in the case that picture data of an irregular long-sized document is transmitted and is printed on fixed-form print paper on the reception side. SOLUTION: A picture data transmitter 1 is provided with a picture line number counting processing part 12, which counts a number 14 of picture lines when reading picture data 13 page by page, and a picture line number report processing part 10 which reports the number 14 of picture lines to the picture data receiver before transmission of picture data 13 to the picture data receiver, and the picture data receiver 1 receives a number X of picture lines before reception of picture data and compares the received number X of picture lines with a maximum number A of unmagnified print lines per print paper and a minimum number kA of reduction print lines per print paper to set the print mode to the unmagnified print mode, the reduction print mode, or the page division mode, and print is started before the completion of reception of picture data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reads an image,
The present invention relates to an image data transmitter for transmitting the image data and an image data receiver for receiving and printing the image data.

[0002]

2. Description of the Related Art Conventionally, for example, an image data transmitter for reading an image and transmitting the image data like a facsimile apparatus, and an image data for receiving and printing the image data.
When the image data transmitter transmits image data of a long document outside the fixed form, the image data receiver also transmits the same length of long paper or If the printer is equipped with a standard paper, the received data may be printed as it is.
A3).

In such a case, the image data receiver has started printing after receiving all the image data.

[0004]

In a conventional image data receiver, when image data of a long document outside the fixed form is received, the number of lines of the data is checked. If it is not possible to determine whether the printing is the same size printing or the reduced printing, it takes time to start printing.

The present invention relates to an image data transmitter and an image data transmitter which can quickly start printing when transmitting image data of a long document outside the fixed form and printing it on a fixed form printing paper at the receiving side. And receivers.

[0006]

In order to achieve the above-mentioned object, the image data transmitter according to the present invention is provided with image data.
Image line number counting means for counting the number of image lines X when reading each image, and notifying the image data number X to the image data receiver before transmitting the image data to the image data receiver. Image line number notifying means is provided, and on the image data receiver side, an image line number receiving means for receiving the image line number X before receiving the image data; If 0 <X ≦ A is compared with the maximum number A of the same-size printing lines per sheet, the same-size printing mode for printing on the printing paper at the same density as the density of the image data is set. , A <X ≦
In the case of kA (kA is the maximum number of reduced printing lines per printing paper), the reduced printing mode for printing on the printing paper at a density higher than the density of the image data is set. Is provided with a print mode setting means for setting the same size print mode and for setting the page division mode for dividing the image data into a plurality of print sheets.

[0007]

Embodiments of the present invention will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals. FIG. 1 is a functional block diagram of the image data transmitter. The image data transmitter 1 has a central processing unit 2
(Hereinafter referred to as CPU 2), storage device 3 (hereinafter referred to as memory 3), input / output device 4 (hereinafter referred to as I / O port 4),
A document reading unit 5, a modem 6, a network control unit 7 (hereinafter referred to as NCU 7) and the like are arranged.
The CPU 2 is connected to the memory 3 and the I / O port 4, and is connected to the document reading unit 5, the modem 6 and the NCU 7 via the I / O port 4.

The CPU 2 includes a compressed data transmission processing unit 8, an image data compression processing unit 9, an image line number notification processing unit 10,
An image reading processing unit 11, an image line number counting processing unit 12, and the like are provided. The memory 3 has an image data storage unit 13,
An image line number storage unit 14, a compressed data storage unit 15, and the like are provided.

An image reading processing section 11 reads an original set on the original reading section 5 and outputs image data and the number of image lines X.
Is stored in the image data storage unit 13 and the image line number storage unit 14.

The image data compression processing section 9 reads out image data from the image data storage section 13, processes the image data into compressed data, and stores the processed data in the compressed data storage section 15. The compressed data transmission processing unit 8 and the image line number notification processing unit 10 are respectively provided from the compressed data storage unit 15 and the image line number storage unit 14 with the compressed data.
And the number X of image lines are read out and output to the telephone line through the modem 6 and the NCU 7.

FIG. 2 is a functional block diagram of the image data receiver. The image data receiver 20 has a central processing unit 21
(Hereinafter referred to as CPU 21), storage device 22 (hereinafter referred to as memory 22), input / output device 23 (hereinafter referred to as I / O port 23).
), A printing unit 24, a modem 25, an NCU 26, and the like. The CPU 21 is connected to a memory 22, an I / O port 23, a printing unit 24, a modem 25, and an NCU 26.
And I / O port 23.

As the printing unit 24, for example, an electrophotographic recording unit having a head in which LED elements (light emitting diode elements) for one line are arranged in the main scanning direction is used.

The CPU 21 has an image line number reception processing unit 2
7, compressed data reception processing section 28, print processing section 29, print mode setting processing section 30, page division mode processing section 31,
A timer processing unit 32 and the like are provided. The memory 22 has an image line number storage section 33, a compressed data storage section 34, an equal-size maximum print line number storage section 35, a reduced maximum print line number storage section 36, a page memory storage section 37, and a page division data. A data storage unit 38 and the like are provided.

The image line number reception processing section 27 and the compressed data reception processing section 28 receive the image line number X and the compressed data from the telephone line via the modem 25 and the NCU 26, respectively, and store the image line number storage section 33 and the compression data. The data is stored in the data storage unit 34.

The print processing unit 29 reads out the compressed data 15 from the compressed data storage unit 34, reproduces the compressed data 15 as image data, expands it into the page memory unit 37, and frees up the space in the page memory unit 37. Is detected to be equal to or larger than the undeveloped image data amount, and the image data is transferred to the printing unit 24.

The print mode setting processing section 30 reads out the image line number X and the same-size maximum print line number A from the image line number storage section 33 and the same-size maximum print line number storage section 35, performs arithmetic processing, and performs print processing. -Set the code.

The maximum printing line number A is the same density as the reading density (lines / mm) on the image data transmitter side when printing on standard paper (for example, A4 size) set in the printing unit 24. This is the maximum number of printing lines per printing sheet when printing (1: 1 printing). Specifically, assuming that the number of image lines X and the maximum number of equal-size printing lines A are 0 <X ≦ A
In the case of (1), the same-size printing mode is set, and A <X ≦ kA (for example, kA is the maximum number of printing lines per printing paper when reduced printing is performed, and k = 1.1 to 1.2: In the case of (hereinafter referred to as the reduced maximum print line number), the reduced print mode is set.

If X> kA, the page division mode
The mode setting processing unit 31 sets the same-size printing mode, sets the image data to the page division mode for dividing and printing on a plurality of printing papers, and sets the page division data storage unit 38. For example, bit 1 is set as page division data.

In the reduced printing mode, the data transfer cycle from the page memory unit 37 to the buffer memory of the printing unit 24 is shorter than in the case of the same size printing.

The image data transfer cycle in the same size printing mode and the reduced printing mode is managed by the timer processing unit 32 and is determined by a set value set in a timer (not shown).

Next, the operation will be described with reference to FIGS. FIG. 3 is a flowchart showing the operation of the image data transmitter, and FIG. 4 is a flowchart showing the operation of the image data receiver. First, the operation of the image data transmitter will be described with reference to FIG.

In step S1, the CPU 2 reads the image of the document through the document reading unit 5, counts the number of image lines X, and stores the image data and the number of image lines X in the memory 3. In step S2, the CPU 2 reads out the number of image lines X from the memory 3 and transmits it to the telephone line through the modem 6 and the NCU 7.

In step S3, the CPU 2 reads out the image data from the memory 3, performs a compression process, and stores the data in the memory 3 as compressed data. In step S4, the CPU 2 reads out the compressed data from the memory 3 and transmits it to the telephone line through the modem 6 and the NCU 7. In step S5, the CPU 2 checks whether or not there is the next document. If so, the process branches to step S1, and if not, the process ends.

Next, the operation of the image data receiver will be described with reference to FIG. In step S11, the CPU 21
The number of image lines X is received through the CU 26 and the modem 25 and stored in the memory 22 as the number of image lines X. In step S12, the CPU 21 receives the compressed image data through the NCU 26 and the modem 25 and stores it in the memory 22 as the compressed data.

In step S13, the CPU 21 reads the number of image lines X and the maximum number of same-size printing lines A from the memory 22, checks whether 0 <the number of image lines X ≦ the maximum number of equal-size printing lines A, and 0 <image If the number of lines X ≦ the maximum number of equal-size printing lines A, the process branches to step S14; otherwise, the process branches to step S29.

In step S14, the CPU 21 sets a value X indicating the final line number in a register (not shown).
In step 15, the printing cycle of the printing unit 24 is set to the same-size mode in order to perform the same-size printing. In step S16, the set value 1 is set in the timer, and the flow advances to step S17.

On the other hand, when branching to step S29,
In step S29, the CPU 21 reads the number of image lines X, the maximum number of equal-size printing lines A, and the maximum number of reduced printing lines kA from the memory 22, and determines whether the equal-numbering maximum number of printing lines A <the number of image lines X ≦ the reduced maximum number of printing lines kA. It is checked whether the maximum number of print lines A is equal to or smaller than the number of image lines X <the maximum number of reduced print lines kA.
If not, the process branches to step S33.

In step S30, a value X indicating the number of final lines is set in a register (not shown). In step S31, the printing cycle of the printing unit 24 is set to the reduction mode for reduced printing, and in step S32, the timer is set. Set value 2 is set, and the process proceeds to step S17.

If the flow branches to step S33, the CPU 21 sets a value A indicating the last line number in a register (not shown) in step S33, and stores the value A in the page division data storage section 38 of the memory 22 in step S34. The page division data indicating the page division mode is stored, and the flow advances to step S15.

In step S17, the CPU 21 reads out the compressed data from the memory 22, reproduces it as image data, and expands it in the page memory unit 37. In step S18, the CPU 21 determines the number of free lines in the page memory unit 37 and the number of undeveloped image lines (the number of image lines obtained by subtracting the number of developed image lines from the number of image lines X). It is checked whether or not the page free space is equal to or larger than the undeveloped image data amount. If the page free space is equal to or larger than the undeveloped image data amount, the flow branches to step S19.

In step S19, the CPU 21 sets the number of printed lines to 0 in a register (not shown), starts the timer in step S20, and transfers one line of image data to the printing unit 24 in step S21. In step S22, a print start command is output to the printing unit 24 to start printing, and in step S23, the number of printed lines is incremented by +1.
After the start of printing, the development and printing of the image data in the page memory unit 37 are performed in parallel, and the development speed is faster than the printing speed. Therefore, undeveloped image data is developed during printing.

In step S24, the CPU 21 checks whether or not the number of printed lines is equal to the last line number, and if the number of printed lines is equal to the last line number, step S26.
If not, the process branches to step S25.

In step S25, the CPU 21 checks whether or not the timer is out. If the timer is out, the process branches to step S20.

If the flow branches to step S26, the CPU 21 refers to the contents of the page division data storage section 38 in step S26, and branches to step S28 if the page division data is set. If not, it is checked whether there is a next page. If there is a next page, the flow branches to step S13, and if not, the process ends.

If the flow branches to step S28, a value (XA) indicating the final line number is set in a register (not shown), and the flow returns to step S19.

[0036]

Since the present invention is configured as described above, it has the following effects. On the image data transmitter side, an image line number counting means for counting the number of image lines X when image data is read for each page, and image data is transmitted to the image data receiver. Image line number notifying means for notifying the image data number X to the image data receiver before the image data reception. The image data number receiver notifies the image data number number X before receiving the image data. The number of received image lines is compared with the received image line number X and the maximum number of print lines A of the same size per print sheet. If 0 <X ≦ A, the density of the image data is determined. Set to the same size printing mode to print on the printing paper at the same density, and if A <X ≦ kA (kA is the maximum number of reduced printing lines), print on the printing paper at a density higher than the density of the image data X> k
In the case of A, there is provided a print mode setting means for setting the same size print mode and setting a page division mode for dividing the image data into a plurality of print sheets. Since the print mode can be determined before the reception of the image data is completed, the printing can be started immediately before the reception is completed, and the printing can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of an image data transmitter.

FIG. 2 is a functional block diagram of an image data receiver.

FIG. 3 is a flowchart showing the operation of the image data transmitter.

FIG. 4 is a flowchart showing the operation of the image data receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image data transmitter 2, 21 CPU 3, 22 Memory 20 Image data receiver

Claims (2)

[Claims] 1. An image data transmitter for reading an image and transmitting the image data to an image data receiver, wherein the number of image lines is determined when the image data is read for each page. Image line number counting means for counting X; image line number notifying means for notifying the image data receiver of the image line number X before transmitting the image data to the image data receiver. Image data characterized by the provision of
Transmitter. 2. An image data receiver which receives image data from an image data transmitter, develops the image data in a page memory, and prints the image data on a standard print sheet by a printing unit. Image line number receiving means for receiving the number of image lines X before receiving image data from the image data transmitter; the number of received image lines X and the maximum number of equal-size print lines per print sheet Compared with A, if 0 <X ≦ A, set the same-size printing mode to print on the printing paper at the same density as the density of the image data, and A <X ≦ kA (kA is In the case of the above (the maximum number of reduced printing lines per one printing paper), a reduced printing mode for printing on the printing paper at a density higher than the density of the image data is set. In the case of X> kA, Set the same size printing mode and divide the image data into a plurality of printing papers. Bae - di split mode - printing setting to de mode - image de characterized by providing a de setting means - data receiver.