JPH028300Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing device, and in particular, to a light irradiation type fixing device that stabilizes an image formed on paper by irradiating light, it is possible to fix the image on the paper to be fixed, no matter how small. The present invention relates to a fixing device capable of accurately fixing an image.

Conventionally, a light irradiation type fixing device having a configuration as shown in FIG. 1 has been widely used. 1st
The conventional example shown in the figure has a xenon flash tube 5 (hereinafter referred to as a lamp) connected to a power source consisting of a capacitor (not shown) having a potential of about 350 to 600 V and a total capacitance of about 3000 to 10000 μF. ), approximately
It uses light energy irradiation by flashing light of 1.5 to 2 msec. The ink converts the light energy emitted from the lamp 5 into heat and instantly fixes the image stably and firmly onto the fixing paper 1, which is a printing paper made of polyester or the like. For example, a colored liquid ink such as red is used, which is prepared by mixing a sublimable dye such as anthraquinone and carbon using a binder resin such as an epoxy resin and dispersing the mixture in an organic solvent. In order to convey the fixing paper 1 on which an image is formed with ink that can be fixed by light irradiation, a pair of rollers 2 are arranged before and after the lamp 5 and are driven by a motor (not shown). By sandwiching the sheet of paper 1 to be fixed between the rollers 4 which are placed in pressure contact with each of the rollers 2 and to which a pressing force is applied elastically by a spring 3, the sheet of paper 1 to be fixed is The structure is such that the materials are stretched and conveyed under irradiation by a lamp 5. Note that 12 shown in FIG. 1 is a reflection plate of the lamp 5.

In the conventional light irradiation type fixing device as described above, first, a pair of rollers 2 is rotated and placed in the direction shown by the arrow in FIG.
Insert it from the direction shown by arrow A in FIG. As a result, the paper 1 to be fixed is transported while sliding on the guide plate 6, and is fixed by light irradiation from the lamp 5 during an appropriate period while being carried out in the direction shown by arrow B in FIG. It can be done. However, in the conventional light irradiation type fixing device described above, since the paper to be fixed 1 is conveyed by the pair of rollers 2, the length of the paper to be fixed 1 is longer than the pair of rollers 2 disposed before and after the lamp 5. If the interval is shorter than , the paper 1 to be fixed is not conveyed halfway, resulting in a paper jam.

The present invention was devised in order to eliminate the above-mentioned drawbacks, and in a light irradiation type fixing device that stabilizes the image formed on the paper by irradiating it with light, it fixes the paper uniformly. In order to hold the paper stably, the bottom surface is flat, the periphery is raised in the shape of a tray, and a handle is attached to one end, and the other end can be raised and lowered. A movable table having a sheet holding sheet made of a transparent plate attached thereto, and stoppers that engage with the movable table at both ends to regulate its position are provided, and the movable table with the paper set thereon is provided. It has a configuration that includes a guide rail that guides the fixing paper from the set position to the light irradiation position, so that it can accurately fix the paper no matter how small, and prevents paper jams during paper transport. It is an object of the present invention to provide a fixing device which is improved so that it does not occur.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 2 is a schematic configuration diagram showing a light irradiation type fixing device that is an embodiment of the present invention. The same parts as in FIG. . Reference numeral 7 shown in FIG. 2 is a guide rail for guiding the movable base 8 to the lower side of the lamp 5, and the movable base 8 is located at the far side and the front side of the end of the guide rail, which is located further away from the predetermined irradiation position by the lamp 5. A stopper 7a serves to prevent the fixing paper 1 from moving in the direction of the paper 1, and a stopper serves to prevent the paper 1 from coming off the guide rail 7 until the moving table 8 is pulled out toward the front when the paper 1 to be fixed is set at the set position of the moving table 8. The protrusions 7b are provided respectively. The movable base 8 has a flat bottom plate and a raised tray shape at its periphery so that the paper 1 to be fixed can be easily set at a predetermined setting position, and the movable base 8 is attached to one end thereof. A handle 10 is attached so that it can be easily held and moved by an operator, and one end of a presser sheet 9 is attached to the other end. This presser sheet 9 can be used stably on the flat bottom plate of the movable table 8 even if the paper 1 to be fixed is curled or has deformations such as folds and cannot receive uniform light irradiation as it is. To cover the entire surface or a part of the fixing paper 1, in order to fix it so that the paper 1 to be fixed is placed and fixed with uniform light irradiation and fixing.
For example, it is formed of a transparent glass plate, a transparent acrylic plate, a transparent polyester sheet, etc. Further, the plate attached to the other end of the presser sheet 9 is used when setting and fixing the paper 1 to be fixed on the lower surface of the presser sheet 9.
This is a handle plate 11 that can be held by hand to raise and lower the presser sheet 9.

In the light irradiation type fixing device configured as described above, no matter how small the size of the paper 1 to be fixed is, the paper 1 to be fixed can be placed and fixed on the flat bottom plate of the moving table 8. The moving table 8 is moved to the position where the light from the lamp 5 is irradiated, the moving table 8 is temporarily stopped at a predetermined position, and the desired image is fixed on the fixing paper 1 by the light irradiation from the lamp 5, and then the moving table 8 is moved. The paper 1 to be fixed, which has been fixed, can be taken out from the movable table 8 by being pulled out toward the front side.

In addition, as a device for moving the movable table 8 in the present invention, a device configured to move by a driving force such as a motor may be used, but the handle 10 can be moved by holding the handle 10 in the hand of the operator. It is also possible to eliminate the need for a motor.

As detailed above, the fixing device according to the present invention,
In particular, the light irradiation type fixing device can extremely easily and reliably fix an image on any paper to be fixed, no matter how small. This has an exceptional effect of preventing paper jam accidents from occurring.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a conventional light irradiation type fixing device, and FIG. 2 is a schematic diagram showing a light irradiation type fixing device according to an embodiment of the present invention. 1... Paper to be fixed, 2, 4... Roller, 3...
Spring, 5...Xenon flash tube (lamp),
6... Guide plate, 7... Guide rail, 8... Moving table, 9... Presser sheet, 10... Handle, 11...
...Handle plate, 12...Reflector plate.

Claims (1)

[Scope of utility model registration request] In a light irradiation type fixing device that stabilizes an image formed on a sheet of paper by irradiating it with light, the bottom surface is made flat in order to stably hold the sheet so that the sheet is fixed uniformly. A movable platform having a tray shape with a raised periphery, a handle attached to one end, and a paper holding sheet made of a transparent plate that can be raised and lowered up and down attached to the other end. , stoppers are provided at both ends to engage with the moving table to regulate its position, and guide rails are provided for moving the moving table on which the paper is set so as to guide it from the setting position to the light irradiation position. A fixing device characterized by: