JPS61179739A - Laser photocomposing machine - Google Patents

Abstract

PURPOSE:To enable high quality printing without passing through developing and fixing processes, by irradiating the thermal transfer carbon film contacted with the printing paper on a platen with laser beam and transferring a character or a figure to the printing paper by the heat of said laser beam. CONSTITUTION:Laser beam 2 emitted from a laser oscillator 1 enters a lens cylinder 4 through the character of a dial 3. The dial 3 has characters arranged in a matrix form and selectively moves to X- and Y-directions orthogonal to each other by a selective drive apparatus not shown in a drawing to select an arbitrary character. Laser beam 2 formsa focus on the surface of the thermal transfer carbon film contacted with the printing paper 6 on a platen 5 and the carbon film is melted by the heat of laser beam to transfer the selected character to the printing paper 6. Printing can be also performed without using the dial 3 by irradiating the thermal transfer carbon film with laser beam through the character stored in a computer according to a dot or vector system.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a laser phototypesetting machine for transferring characters or figures from a thermal transfer carbon film onto printing paper using a beam of laser light.

A latent image is formed on the photoconductor, toner is placed on the latent image, and the smear is transferred to printing paper.
By fixing it at the end, characters and figures were printed.

``Problems to be solved by the invention'' The process is complicated, there are many mechanisms, and the printed characters are coated with toner, so the quality is rough (thinly cut and cannot be used). In addition to the phototypesetting machine, there is a typesetting machine that develops and fixes after irradiating photographic paper, but the paper has the disadvantages of being expensive and requiring a process of development and fixing.The present invention overcomes these disadvantages. This was done for the purpose of eliminating.

Laser light emitted from a laser oscillator is passed through the dial or lens group, or characters stored in a computer are irradiated onto the thermal transfer carbon film in contact with the printing paper on the platen, and the heat transfers the characters and figures onto the printing paper. Transfer to.

"Operation" During the transfer, the thermal transfer carbon film is brought into contact with and separated from the printing paper on the platen, and the characters, etc. formed by the point A of the laser beam on the thermal transfer carbon film with the connecting 9 are transferred onto the printing paper. Further, characters and the like are transferred while applying high frequency vibrations using an ultrasonic oscillator or a high frequency oscillator to the platen or thermal transfer carbon tape.

Embodiment A laser beam 2 emitted by a laser oscillator 1 passes through the letters on a dial 3 and enters a lens barrel 4. This lens gap 4 is of a zoom type, and there are types that change the size of the characters, and types that are provided with a plurality of lens barrels and are selectively used. Characters are arranged in a matrix on the dial plate 3, and an arbitrary character is selected by selectively moving in the X and Y directions perpendicular to each other by a selection drive device (not shown). The laser beam 2 is focused on the surface of the thermal transfer carbon film 7 that is in contact with the printing paper 6 that is in contact with the platen 5, and the selected characters are transferred to the printing paper 6 by combing the carbon film with the heat. The thermal transfer carbon film 7 sent out from the reel 8 and wound onto the reel 9 is guided by guide rolls 10 and I+ on the way and comes into contact with the printing paper 6. I+ swings toward and away from the print paper 6 by the operation of an electromagnet (not shown), moves away when the print paper 6 moves, and comes into contact when the laser beam 2 transfers characters.

The printing paper 6 pulled out from the reel 12 by a pair of drawer rolls +3 and +4 hangs down to the 15th place. The drawer rolls 13, +
The printed paper 6 pulled out at step 4 moves together with a carriage (not shown), passes between a return roll 16 and a pressure roll 17, and passes between a paddle roll 18, 19 and a vertical feed roll 20.
, and the press roll 21 to be wound onto the reel 22. The vertical feed roll 20 is rotated by a servo motor (not shown), and the printing paper 6 is moved in the direction of the reel 22.
Alternatively, it is fed by a predetermined amount in the direction of the reel 12 while being measured with an encoder or the like. On the other hand, the return roll 16 is a torque motor (not shown) that moves the printing paper 6 in the direction of the reel 12 with a force weaker than the feeding force of the printing paper 6 by the vertical feed roll 20.
By constantly acting to pull the printed paper 6 back toward the reel 12, the printed paper 6 is tensed by following the movement of the vertical feed roll 20. The device between the return roll 16 and the reel 22 is a carriage that moves in a direction perpendicular to the plane of the paper while its movement amount is controlled. Characters can also be transferred onto the printing paper 6 by placing a prism or mirror (not shown) and moving it. Detect devices. The leading end of the reel 25 of the spare printing paper 6 is fixed on the movable plate side, and the movable plate side faces the adhesive table 25 and is attached to Ls? (not shown). Recommendation for answer A: f- Once the leading edge of the printing paper 6 is glued to the end of the printing paper 6, it will return to its original position due to the elasticity of the spring. 2
7 is the dial thickness.

The laser beam is irradiated while the platen 5 or the thermal transfer carbon film 7 is vibrated with an ultrasonic vibrator, high frequency oscillator, etc. (not shown), that is, without bringing the printing paper 6 and the thermal transfer carbon film 7 into contact with each other. Also, printing paper 6
By applying high-frequency vibration to the material while vertically feeding or returning the material, it is possible to prevent deviation during feeding.

The present invention also includes printing characters stored in a computer by irradiating laser light onto a thermal transfer carbon film in a dot method or a vector method without using the dial plate 3.

As the laser base thickness, known thicknesses are used, such as using a semiconductor laser and using a liquid crystal array as a shutter.

``Effects of the invention'' Not only does it not require the use of expensive photographic paper, therefore it is possible to eliminate developing and fixing devices and their processes.
It has the effect of eliminating the drawback of uneven development, which conventional phototypesetting machines have.

[Brief explanation of the drawing]

The figure is a conceptual diagram of the present invention. 1...Laser oscillator, 2...Laser light (laser beam), 3...Dial plate, 4...Lens tube, 5...Platen 6
・・Print paper, 7.・Thermal transfer carbon film. Procedural formalities (spontaneous) December 23, Showa ω Showa ω Patent Order No. 199795 2
．． , V2, Title of the invention laser copy [W 3, Relationship with the case to be amended Applicant 4, Date of amendment order Initiator 5, Next to the detailed description of the invention in the specification to be amended, a brief explanation of the drawings Side view and drawing. 6. Contents of the amendment (1) “Gaidroll I” in line 18-9 of No. 4 of the specification
Q, I + is the operation of an electromagnet (not shown), and ``'' is changed to ``
The heat-transfer carbon film between the guide rolls 10 and 1+ is corrected by recommending a pressing plate made of glass, ceramics, etc. by the operation of an electromagnet array. (3) Correct the drawing as shown in the attached sheet. (4) "Also, platen" on page 3, line 10 of the specification is corrected to "also, laser light, platen."

Claims (1)

[Claims] 1. A laser phototypesetting machine characterized in that characters or figures are transferred onto printed paper by irradiating a thermal transfer carbon film in contact with the printed paper on a platen with a laser beam emitted from a laser oscillator. . 2. The laser phototypesetting machine according to claim 1, wherein the characters or figures are formed by a laser beam passing through the dial. 3. Claim 1, characterized in that the printing paper on the platen or the thermal transfer carbon film in contact with it is vibrated at high frequency by an ultrasonic oscillator or a high frequency oscillator.
Laser phototypesetting machine as described in section. 4. A laser phototypesetting machine according to claim 3, wherein the high-frequency vibration of the printing paper or the thermal transfer carbon film is performed in synchronization with laser beam irradiation.