JPH04215376A - Facsimile device - Google Patents

Abstract

PURPOSE:To prevent black printing on recording paper and to shorten the time for transmission by automatically magnifying or reducing image signals so as to confine image information to a recording paper size, then transmitting this information. CONSTITUTION:The document paper size is read in a document size reading section 11 and the read image signals are magnified or reduced in a magnifying/ reducing section 12. The detected document size and the recording paper size of the transmission destination or the recording paper size of the present station are compared in a signal processing section 10 at the time of transmission or copying. The image signals are transmitted as they are via a MODEM 16 if the document size and the received recording paper size are the same. The magnification/reduction rate is calculated in the processing section 10 and is transmitted to the magnifying/reducing section 12 when the document size and the recording paper size are different. The image signals are then transmitted after the signals are subjected to magnification/reduction. The printing of the image signals in black at both ends of the recording paper is obviated in this way and the appearance is improved; in addition, the printing time is shortened.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a facsimile machine, and more specifically, when the size of a document on which image information is written is different from the recording paper size of the called party or the recording paper size of the own station, the The present invention relates to a device characterized by automatically enlarging or reducing information so that it fits within the recording paper size before transmission or copying.

0002

[Prior Art] Recently, facsimile machines that transmit and receive image information via telephone lines have been developed and used. Many use B4 size or A4 size recording paper, or use B4 width or A4 width roll paper. By the way, (a
), this kind of facsimile machine can print A4
When copying image information written on standard size paper P1, the facsimile machine's paper width detection mechanism detects the document size, reads only the A4 width image information, and copies it onto B4 width reception recording paper P2. It is designed to copy, and
As shown in FIG. 8(b), when copying image information written on B4 standard size paper P3, similarly, the paper width detection mechanism detects the original size and prints a copy of only the B4 width. The image information is read and copied onto B4 reception recording paper P4. However, in the paper width detection mechanism of such a facsimile machine, the detection position is set slightly inside the width of the standard paper in order to detect the paper size. As shown, when copying a document P5 that is larger than A4 size and smaller than B4 size, the document size is determined to be B4 and image information of B4 width is read, resulting in images that extend beyond the document width. The image signals on both sides became black due to the loss of reflected light in the area, and both ends of the recording paper P6 became black, which made the appearance unsightly.In addition, copying took time because the number of black printed areas increased. Further, since such a problem also occurs during transmission, both sides of the receiving recording paper at the destination become black and the transmission time increases, so an improvement has been desired.

0003

SUMMARY OF THE INVENTION The present invention, proposed in view of the above circumstances, provides that when the paper size of the document on which image information is written is different from the recording paper size of the called side or the recording paper size of the own station, By automatically enlarging or reducing the image signal to fit the image information within the recording paper size before sending or copying, it prevents black printing on both sides of the recording paper, thereby reducing transmission time. It is an object of the present invention to provide a facsimile device that can perform printing with good appearance.

0004

[Means for Solving the Problems] The present invention proposed to achieve the above object includes a document size detection unit that reads the document paper size, and an enlargement/reduction unit that enlarges or reduces an image signal read from the document. When sending or copying, the detected original size is compared with the recording paper size of the destination or the own recording paper size, and the enlargement rate or The image forming apparatus is configured to include a signal processing section that calculates a reduction ratio, enlarges or reduces an image signal read from a document using the calculated value, and then performs transmission processing or copying.

[0005]

[Operation] In the present invention, when a document with image information is set and a transmission or copying operation is performed, the document size detection section detects the paper size of the document and transmits it to the signal processing section. Then, compare the detected paper size with the called side's recording paper size or your own station's recording paper size, and determine the enlargement or reduction ratio to fit the image information written on the document into the size corresponding to the recording paper. Calculate. Then, the signal processing section transmits the calculated enlargement or reduction ratio to the enlargement/reduction section, enlarges or reduces the image signal read from the document, and transmits or copies the image signal.

[0006]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 conceptually shows the operation of the facsimile apparatus of the present invention. For example, image information is written on non-standard paper PA whose original width is larger than A4 standard size paper and smaller than B4 standard size paper. When the paper PA is set in a facsimile machine, the document width of the non-standard paper PA is detected, and image information of the detected document width is read and converted into an image signal. Then, the document width and the recording paper width are compared, and when the recording paper width is A4 size, the image signal is reduced, while when the recording paper width is B4 size, the image signal is enlarged so that the image information fits into the recording paper size. Copying and sending are performed in this way.

FIG. 2 is a block diagram showing an example of the internal configuration of the facsimile machine 1 of the present invention. In the figure, 11 is a document size detection unit, and 12 is an enlargement/reduction unit that enlarges or reduces the read image signal. 13 is an image memory for storing image signals, 14 is a key operation section having various operation keys, 15 is a line control section for controlling switching of the telephone line L, and 16 is an image signal etc. via the telephone line L. It is a modem that sends and receives. In addition, 17 is ROM17a and R
18 is an image reading unit, 19 is a print output unit that prints out the image signal received by the modem 16 on recording paper, and the processing of each of these units is performed by the signal processing unit 10. ing.

The original size detection unit 11 includes an original irradiation light source 11a for irradiating the original, and a portion of the light output from the original irradiation light source 11a that is blocked by the original to detect the original width. As shown in FIG. 3, a document irradiation light source 11a is provided above the document P conveyed by the document conveyance roller R, and a document P corresponding to the document irradiation light source 11a is provided. A light receiving element of the document width detection circuit 11b is provided at the bottom of the document width detection circuit 11b. Therefore, as shown in FIG. 4(a), the document irradiation light source 11a
The light emitted from the original P goes to the light receiving element, but the light does not reach the light receiving element in the part blocked by the document P. As shown in FIG. 4(b), the light is received in the part corresponding to the document width. The output of the element is at the "L" level, and the width of the document P is detected.

The enlarging/reducing section 12 enlarges or reduces the image signal transmitted from the image reading section 18 and stored in the image memory 13 using the enlargement or reduction ratio transmitted from the signal processing section 10. There is. In this embodiment, when reducing an image signal, one line of pixel signals is thinned out at a predetermined reduction rate transmitted from the signal processing unit 10, as shown in FIGS. Pixels are thinned out in synchronization with the pattern signal. Note that in FIG. 5, a reduction rate of 25% is shown as an example. In addition, when enlarging an image signal, as shown in FIGS. 6(a) to 6(c), one line of pixel signals is combined with an enlarged pattern signal of a predetermined enlargement rate transmitted from the signal processing unit 10. Pseudo pixel signals are inserted synchronously, and the pseudo pixel signals to be inserted are determined by the logical sum of the pixels on the left and right of the insertion point, and the pixels adjacent to the insertion point on the previous and next lines. It has become.

The ROM 17a of the system memory 17 stores various processing programs for signal processing, and the RAM 17b temporarily stores data during the signal processing process.

Further, as shown in FIG. 3, the image reading unit 18 includes an image reading light source 18a for illuminating the original, and an image sensor (in this embodiment) for detecting light reflected by the original and converting it into an image signal. In the example, a CCD is used (hereinafter referred to as CCD) 18b, and the signal output from CCD 18b is
” or “L” level image signal, and the light output from the image reading light source 18a and reflected by the document P is reflected by the mirror M and focused by the lens L. The signal is inputted to the CCD 18b to obtain an image signal corresponding to the image.

The operation of the facsimile machine 1 of the present invention having such a configuration will be explained with reference to the flowchart shown in FIG. 1. Operation when sending a facsimile. ■Set the original to be sent in the image reading section 18, operate the numeric keys, one-touch keys, and shortcut keys (all not shown) on the key operation section 14 to make a call to the called party, which is the destination, and the called party receives the call. Then, the telephone line L is connected and mutual transmission of data necessary for communication with the called party is executed by handshaking. Through this data transmission, the data of the receiving recording paper size of the called side is stored in the RAM 17b. (Figure 7 Step 10
00-1002). ■The original size detection unit 11
The original irradiation light source 11a is driven to irradiate the original, and the original width detection circuit 11b detects the original width d from the signal blocked by the original and transmits it to the signal processing section 10. (See step 1003 in FIG. 7). ■The signal processing unit 10 compares the data of the transmitted document width d with the received recording paper width p of the called side, and if the document width d and the received recording paper width p are the same,
The image signal read by the image reading section 18 is sent directly to the telephone line L side via the modem 16. Further, when the document width d is larger than the reception recording paper width p, the signal processing section 10
Then, the reduction ratio is calculated from the document width d and the received recording paper width p and transmitted to the enlargement/reduction section 12, and the enlargement/reduction section 12
After sequentially reducing the image signal transmitted to the image memory at the calculated reduction ratio, the image signal is transmitted to the telephone line L via the modem 16.
Send it to the side. Further, when the document width d is smaller than the reception recording paper width p, the signal processing section 10 calculates an enlargement ratio from the document width d and the reception recording paper width p and transmits it to the enlargement/reduction section 12. At step 12, the image signal transmitted to the image memory is sequentially enlarged at the calculated enlargement ratio, and then sent to the telephone line L side via the modem 16. (Figure 2
(See steps 1004-1014, 1016-1018). ■In this way, the image signal of one page of the original is sent, and when there is the next page of original, the process returns to step 1003 to detect the original width d, but when the transmitted original is finished, the line shuts off and returns to standby mode. (See step 1015 in FIG. 7). 2. Behavior when copying. Regarding the operation during copying, the difference is that copy processing is performed instead of calling, handshaking, and sending out image signals in the operation during transmission, and the other operations are the same and will therefore be omitted.

As described above, according to the facsimile apparatus of the present invention, the image information of the original is automatically enlarged or reduced to the recording paper size, so that black printing is not performed on both ends of the recording paper due to the size difference. As a result, the reception time for black printing is reduced, communication speed is improved, and the appearance of the printing on the recording paper is improved. In the above explanation, only the width of the document is detected and compared with the width of the recording paper. It is also possible to adopt a configuration in which the image signal is enlarged or reduced so that either one matches the recording paper size.

[0014]

As can be understood from the above explanation, according to the facsimile apparatus of the present invention, even when copying or transmitting an original that is different from the standard paper size, the image information of the original can be recorded. The image signal is automatically enlarged or reduced to fit the size of the paper.
Due to the different sizes, black printing is not performed on both ends of the recording paper, which improves the appearance, and by eliminating black printing, printing time is shortened and communication speed is improved.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram illustrating the operation of a facsimile apparatus according to the present invention.

FIG. 2 is a block configuration example diagram of a facsimile apparatus of the present invention.

FIG. 3 is a schematic diagram of a document size detection section and an image reading section of the facsimile apparatus of the present invention.

FIGS. 4(a) and 4(b) are explanatory diagrams of the operation of the document size detection section of the facsimile apparatus of the present invention.

FIGS. 5A to 5C are explanatory diagrams of the reduction operation of the enlargement/reduction section of the facsimile apparatus of the present invention.

FIGS. 6A to 6C are explanatory diagrams of the enlargement operation of the enlargement/reduction section of the facsimile apparatus of the present invention.

FIG. 7 is a flowchart illustrating the operation of the facsimile apparatus of the present invention.

FIGS. 8A to 8C are explanatory diagrams of operations when copying is performed in a conventional facsimile machine.

[Explanation of symbols]

1 Facsimile machine 10 Signal processing section 11 Original size detection section 12 Enlargement/reduction section

Claims (1)

[Claims] Claim 1: A document size detection section that reads the document paper size; an enlargement/reduction section that enlarges or reduces the image signal read from the document; Compare the size or recording paper size of your own station, calculate the enlargement or reduction ratio to fit the image information of the document into the size appropriate for the recording paper, and enlarge the image signal read from the document using the calculated value. Or a facsimile machine equipped with a signal processing unit that performs transmission processing and copying after reduction.