JP3536620B2 - Communication terminal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device having both a color copying function and a facsimile recording function, and more particularly to a communication terminal device capable of reducing costs.

[0002]

2. Description of the Related Art Conventionally, there is a facsimile apparatus having a copying function, but with the spread of color recording technology, it is desired to provide a color copying function. In such a facsimile / copy multifunction machine, monochrome recording is performed at the time of facsimile reception, and color recording is performed at the time of copying.

In an apparatus for performing color recording, three types of color materials having different spectra for performing subtractive color mixing and a black color material are used. Therefore, a recording head is not provided for each of these color materials. must not. That is, Y (yellow) color,
Four recording heads for M (magenta), C (cyan), and K (black) colors are provided.

On the other hand, a black color material is usually used for monochrome recording, so that a recording head for black is sufficient.
Therefore, the facsimile / copy machine has a yellow color,
It is sufficient to provide four recording heads for magenta, cyan, and black.

Hereinafter, the recording head is a line head in which a number of dot recording bodies are arranged in a line direction perpendicular to the paper feeding direction. As a recording method, an ink jet method, a thermal transfer method, a sublimation method, an electrophotographic method, or the like can be used.

[0006]

By the way, the maximum size of recording paper frequently used for facsimile is B4 size, and larger size is not common. Therefore, if the facsimile apparatus is configured to be able to record on B4 recording paper, it can be used without unnecessarily increasing the size of the apparatus and without dissatisfaction with the size of the recording paper. Accordingly, the required length of the line head is B4
It is the length of the recording paper standard.

On the other hand, the maximum size of recording paper frequently used for copying is A4 size because A4 size and B5 size recording papers are widely used for business use. Thus, the required length of the line head is the length of the A4 recording paper standard.

The length of the line head satisfying both requirements is the length of the B4 recording paper standard. However, yellow, magenta, cyan colors of facsimile / copier
When all four line heads for black are formed to the length of the B4 recording paper standard, the remaining three line heads other than the black line head for the length exceeding the length of the A4 recording paper are hardly used. Become. The longer the line head is, the higher the cost becomes. Therefore, the line head having the extra length which is hardly used is not economical.

Further, when the line head is lengthened, the capacity of the buffer for storing the recording data must be increased accordingly, and a buffer area which is hardly used occurs in the three buffers except for the black buffer. , Not economical.

[0010] Therefore, an object of the present invention is to provide a communication terminal device which solves the above problems and reduces costs.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a communication terminal device for printing using a plurality of color materials. In comparison, another line head is formed shorter.

The line head is black, magenta,
The line head for each color material of cyan and yellow may be formed, and other line heads may be formed shorter than the line head for black.

The length of the black line head may be B4 recording paper width, and the length of other line heads may be A4 recording paper width, and the black line head may be used for reception recording.

[0014]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an outline of a head portion of a multifunction facsimile / copy machine according to the present invention. 2 and 3 show a side surface and a plane of a head portion adopting a thermal transfer method.

In the embodiment of FIG. 1, the facsimile / copying machine performs monochrome recording up to B4 recording paper at the time of facsimile reception and color recording up to A4 recording paper at the time of copying. .

As shown in FIG. 1, the head portion of the facsimile / copying multifunction machine includes a yellow line head 1Y, a magenta line head 1M, and a cyan line head in order from upstream in the recording paper feed direction. 1C and black line heads 1K are provided in parallel at intervals. Among them, the black line head 1K is formed to have a length suitable for the printing area on the short side of the B4 recording paper. The three line heads 1Y, 1M, and 1C except for black are A4
The recording paper is formed to have a length suitable for the printing area on the short side.

Platen rollers 2Y, 2M, 2C, and 2K are provided to face the respective line heads for each color. These platen rollers 2Y, 2M, 2C, 2K
Is a paper feed function and line heads 1Y, 1M, 1C,
It functions to press the recording paper against 1K. The platen roller 2K facing the black line head 1K is formed long enough to cover the printing area by the black line head 1K, and the other platen rollers 2Y, 2K
M and 2C are also formed to the same length as the platen roller 2K. In this way, the paper feed is configured to be applicable up to a maximum of B4 recording paper.

Next, the specific structure of the head unit using the thermal transfer method will be described.

As shown in FIG. 2, a paper feed section 21 is arranged below the head section 20. The paper supply unit 21 is provided with a detachable recording paper tray 31. One side of the bottom surface of the recording paper tray is configured to be freely raised, and a spring 32 is provided so as to contact the back surface of the raised surface.
In addition, the recording paper 33 accommodated in the recording paper tray 31 in an overlapping manner
A take-out roller is provided so as to be in contact with the upper surface of the. A paper guide member (not shown) curved in a horizontal U-shape is provided downstream of the recording paper taking-out direction, and the taken-out recording paper 33 is inverted and guided to the head unit 20. I have.

The head unit 20 includes a yellow color recording unit 21Y and a magenta color recording unit 2 in order from the upstream in the recording paper feed direction.
1M, a cyan recording section 21C, and a black recording section 21K. The yellow recording unit 21Y includes a sending unit 23Y on which a yellow ink film 22Y is mounted, and a winding roller 24Y for winding the ink film 22Y.
And a Y-yellow thermal line head 25Y, which is provided between the sending section 23Y and the take-up roller 24Y so as to be freely retractable, and a head retracting solenoid (not shown). The magenta and cyan recording sections have the same configuration except that the color of the ink film is different, and therefore the description is omitted. The black recording unit 21K has a larger amount of ink film than those of the other three colors, and the sending unit 23K and the take-up roller 24K are also formed larger. This is based on the fact that when color recording and monochrome recording are used together, the amount of black used is greater than the other three colors. 26 is a platen roller.

Although not shown, a driver for heating each dot and a buffer for holding image data are provided corresponding to each color recording unit, and the capacity of these drivers and buffers is adjusted to the length of the line head. It is.

As shown in FIG. 3, the platen roller 2
6 is provided, and one end on the same side of each platen roller 26 is connected by a gear or the like so that each platen roller 26 is synchronously rotated by one motor 27. At the opposite end of each platen roller 26, a torque limiter 28 is provided.

The B4 recording paper or A4 recording paper 33 placed on the recording paper tray 31 is pressed by a take-out roller by the bottom surface of the recording paper tray 31 being pushed by a spring 32 and raised. When the take-out roller rotates, the uppermost sheet of recording paper 33 is sent out, inverted by the paper guide member, and guided to the head unit 20. In the head section 20, the recording paper 33 is fed by each platen roller 26, and is discharged from a discharge port (not shown) provided downstream of the platen roller 26 of the black recording section 21K.

While the recording paper 33 is passing through the head section 20, the respective color recording sections 21Y, 21M, 21C, 21K operate. At the time of facsimile reception, only the black recording unit 21K operates to perform monochrome recording. 4 for copying
The color recording sections 21Y, 21M, 21C, and 21K operate to perform color recording. For example, yellow recording section 2
In 1Y, the yellow color thermal line head 25Y advances by the action of the solenoid, and presses the yellow ink film 22Y together with the recording paper 33 against the platen roller 26. The dots are heated according to the yellow line image data by the operation of a controller (not shown). The yellow ink is transferred to the recording paper from the yellow ink film 22Y in contact with the heated dots.

This multifunction facsimile / copy machine satisfies the user's requirements because facsimile can record up to B4 recording paper and color copying can record up to A4 recording paper. Since it is formed short, it can be supplied at low cost.

Next, another embodiment will be described.

As shown in FIG. 3, the black recording portion 21K
Is configured to be able to record up to A4 recording paper. That is, the black line head is formed to a length of A4 recording paper standard. On the other hand, the yellow color recording unit 21Y, the magenta color recording unit 21M, and the cyan color recording unit 21C are configured to be able to record up to postcard large recording paper. That is, the line heads for the three colors of yellow, magenta and cyan are formed to have a postcard standard length. A facsimile / copying machine equipped with this head unit performs monochrome recording up to A4 recording paper when facsimile reception and color recording up to postcard large recording paper when copying. Is suitable for home use. And, it can be supplied at a lower cost than those for business use.

[0029]

The present invention exhibits the following excellent effects.

(1) Since the line head used only for color recording is shortened, the cost of the head is reduced.

(2) Since the buffer capacity can be reduced according to the line head length, the cost of the memory can be reduced.

(3) An inexpensive facsimile / copy machine can be provided while satisfying the demand for monochrome printing and the demand for color printing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a head unit of a facsimile / copying machine showing an embodiment of the present invention.

FIG. 2 is a side view of a head portion adopting a thermal transfer method according to an embodiment of the present invention.

FIG. 3 is a plan view of a head portion adopting a thermal transfer method according to an embodiment of the present invention.

[Explanation of symbols]

Line head for 1Y yellow color 1M Magenta line head 1C Cyan color line head 1K black line head

Claims (3)

(57) [Claims] 1. A communication terminal device for printing using a plurality of color materials, wherein, among the line heads for each color material, another line head is formed shorter than one line head. Communication terminal device. 2. The apparatus according to claim 1, wherein the line head comprises a line head for each color material of black, magenta, cyan, and yellow, and other line heads are formed shorter than the line head for black. The communication terminal device according to claim 1. 3. The length of the black line head is B4 recording paper width, the length of the other line head is A4 recording paper width, and the black line head is used for reception recording. 3. The communication terminal device according to 1 or 2.