JPH04312861A - Non-impact multi-leaf copy printing device - Google Patents

Abstract

PURPOSE:To ensure that a multi-leaf copy is printed at high speed and clearly by using a printing sheet sensitive to light of different wavelength and almost at the same time, emitting a laser beam of such a wavelength as to cause each printing sheet to be sensitized optically. CONSTITUTION:A printing laser emission part 32 is controlled by the printing control part 33 of a laser beam emission device 3 so that print contents stored in printing page memory 31 for each printing sheet are printed on a multi-leaf copy 1 based on said contents. Then four laser beams of different wavelengths from the other lambda1, lambda2, lambda3, lambda4 are emitted to the multi-leaf copy almost at the same time using a printing laser beam emission part 32. Subsequently, the first leaf, second leaf, third leaf and fourth leaf of the multi-leaf copy are sensitized by laser beams of wavelengths lambda1, lambda2, lambda3 and lambda4 respectively, and thereby data is printed on each printing copy almost simultaneously.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a multi-paper printing device used for creating forms such as pay slips and transaction statements, and in particular, to increase the speed and clarity of multi-paper printing using a non-impact method. The present invention relates to a non-impact multi-copy printing device that can achieve the following.

0002

2. Description of the Related Art Conventionally, two types of printing devices have been used for creating forms such as pay slips and transaction statements.

First of all, in an impact type multi-sheet printing device, a multi-sheet sheet made by stacking a plurality of printing sheets,
Multi-copy printing is performed by hitting a print head etc. on top of the printing paper to change the color of the pressure-sensitive paint applied to the printing paper, or by transferring the carbon between the printing paper and the printing paper. .

[0004] Secondly, with non-impact printing devices, when printing on ordinary printing paper, it is not possible to print multiple copies at the same time, so multiple copies are printed by repeating printing multiple times. .

However, the former printing device has the following problems. (a) Since multiple copies of paper are struck by a print head or the like, there is a limit to how quickly the printing paper can be conveyed, making it impossible to achieve high-speed printing. (b) Discoloration of pressure-sensitive paint on printing paper, transfer of carbon,
Since this is done by applying pressure against the print head, etc., printing may be uneven or unclear.

[0006] Furthermore, the latter printing device has the following problems. (a) When printing is performed multiple times on the same printing paper, the number of copies per printing paper is limited depending on the size of the printing paper. (b) If printing is performed multiple times on different printing paper,
It takes a lot of time to combine print sheets of the same form.

[0007]

SUMMARY OF THE INVENTION As described above, conventional printing devices have problems in that not only the printing speed is slow, but also the printing is unclear.

[0008] An object of the present invention is to provide an extremely reliable non-contact printer that can print on multiple sheets of paper in a non-impact manner without hitting the printing paper with a print head or the like, and that can achieve faster and clearer printing. An object of the present invention is to provide an impact multi-copy printing device.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a plurality of prints that change color when exposed to light of different wavelengths and that transmit light of wavelengths other than those to which they are exposed. A laser beam that emits a plurality of laser beams having different wavelengths from each other almost simultaneously onto multiple sheets of paper so as to print predetermined print content on each sheet of paper. and an injection device.

0010

[Operation] Therefore, in the non-impact multi-copy paper printing device of the present invention, as each printing paper of the multi-copy paper to be printed,
By using printing paper that is sensitive to light of different wavelengths and emitting laser beams from a laser beam emitting device with wavelengths that can sensitize each printing paper almost simultaneously, each printing paper can be printed almost simultaneously. It is done. That is, since it is a non-impact method, it is possible to achieve a high printing speed, and since printing is performed using a laser beam that passes through the printing paper, it is possible to achieve clearer printing.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a non-impact multi-sheet printing apparatus according to the present invention. In FIG. 1, a multi-copy paper 1 is conveyed by a paper conveyance section 2. As shown in FIG. Further, above the multi-copy paper 1, a laser beam emitting device 3, which is the main body of the printing device, is arranged.

Here, the multiple sheets 1 each have different wavelengths (in this example, four types of wavelengths λ1, λ2, λ3,
It is made by stacking multiple sheets (four sheets in this example) of printing paper coated with a photosensitive paint that changes color when exposed to light of λ4), and which transmits light at wavelengths other than those to which it is sensitive. On the other hand, the laser beam emitting device 3 includes a printing page memory 3.
1, a printing laser irradiation section 32, and a printing control section 33. The printing page memory 31 stores printing contents predetermined by a computer or the like for each printing paper. Further, the printing laser irradiation unit 32 has the wavelengths (λ1, λ2, λ
3, λ4) (four in this example) are emitted onto the multi-copy paper 1 almost simultaneously. Further, the print control unit 33 controls the print laser irradiation unit 32 to print the print content on the multi-copy paper 1 based on the content stored in the print page memory 31. Next, the operation of the non-impact multi-sheet printing device of this embodiment configured as described above will be explained.

In FIG. 1, a multi-copy paper 1 is transferred to a paper transport section 2
It is transported by. In such a state, the print control unit 33 of the laser beam emitting device 3 prints the print content on the multi-copy paper 1 based on the print content for each print paper stored in the print page memory 31. The printing laser irradiation section 32 is controlled. Then, as schematically shown in FIG. 2, four laser beams having mutually different wavelengths λ1, λ2, λ3, and λ4 are emitted from the printing laser irradiation unit 32 onto the multi-sheet paper 1 almost simultaneously. As a result, the first printing paper 11 of the multi-sheet paper 1 is printed by the laser beam of wavelength λ1, the second printing paper 12 is printed by the laser beam of wavelength λ2, and the third printing paper is printed by the laser beam of wavelength λ3. 13 is the wavelength λ4
The fourth sheet of printing paper 14 is exposed to the laser beam and changes color, forming dots forming characters, etc., and printing is performed on each printing paper 11, 12, 13, and 14 almost simultaneously. Become.

As described above, the non-impact multi-sheet printing device according to this embodiment uses different wavelengths λ.
Four sheets of printing paper 11, 12, 13, 1 whose surfaces are coated with photosensitive paint that changes color when exposed to light of wavelengths 1, λ2, λ3, and λ4, and which transmit light of wavelengths other than those to which it is sensitive.
4, a multi-copy paper 1 formed by stacking 4 sheets, a printing page memory 31 that stores predetermined printing contents for each printing paper,
Different wavelengths λ1, λ2, λ3, λ4, respectively
The printing laser irradiation unit 32 emits four laser beams almost simultaneously onto the multi-copy paper 1, and prints the print content on the multi-copy paper 1 based on the content stored in the printing page memory 31. Print control unit 3 that controls the laser irradiation unit 32
3 and a laser beam emitting device 3.

[0016] Therefore, the following effects can be obtained. (a) Since printing is performed using a non-impact method, it is possible to achieve high printing speed. (b) Since printing is performed using a laser beam that passes through the printing paper 11, 12, 13, and 14, it is possible to realize clearer printing. (c) It is possible to print on multiple sheets of paper even though the printing is performed using a non-impact method.

[0017] In the above embodiment, when the multi-sheet paper 1 is made of a plurality of stacked sheets of printing paper whose surfaces are coated with a photosensitive paint that changes color when exposed to light of one specific wavelength different from each other. Although the explanation is not limited to this, for example, the first sheet of printing paper 11 is exposed to light of wavelength λ1 and discolored, and the second sheet of printing paper 12 is exposed to light of wavelengths λ1 and λ2 and discolored, respectively. Then, the third printing paper 13 is exposed to light of wavelength λ3 and changes color, and the fourth printing paper 14
It is also possible to use a stack of four sheets of printing paper that change color when exposed to light of wavelengths λ2 and λ4, respectively. In this case, the combination of wavelengths is determined depending on the printing application. In addition, in the above embodiment, the case where there are four types of wavelengths was explained, but
The type of wavelength is not limited to this, and the type of wavelength can be changed as appropriate depending on the printing purpose.

[0018]

As explained above, according to the present invention, a plurality of sheets of printing paper are stacked, each of which changes color when exposed to light of a different wavelength, and which transmits light of a wavelength other than that to which it is exposed. Consisting of multi-copy paper and a laser beam emitting device that emits a plurality of laser beams of different wavelengths onto the multi-copy paper almost simultaneously so as to print predetermined print content for each print paper on the print paper. This allows printing on multiple sheets of paper using a non-impact method without hitting the printing paper with a print head, etc.
It is possible to provide an extremely reliable non-impact multi-copy printing device that is capable of speeding up printing and making it clearer.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a non-impact multi-sheet printing device according to the present invention.

FIG. 2 is a schematic diagram for explaining the operation of the same embodiment.

[Explanation of symbols]

1...Multi-copy paper, 11, 12, 13, 14...Print paper, 2...
Paper transport section, 3... Laser beam emitting device, 31... Printing page memory, 32... Printing laser irradiation section, 33... Printing control section.

Claims (1)

[Claims] Claim 1: A multi-sheet paper consisting of a plurality of overlapping sheets of printing paper, each of which changes color when exposed to light of a different wavelength and which transmits light of a wavelength other than the one it is sensitive to; A laser beam emitting device that emits a plurality of laser beams each having a different wavelength onto the multi-sheet paper almost simultaneously so as to print predetermined print content on the print paper. Non-impact multi-copy printing device.