JPH0324580A - Flash fixing device - Google Patents

Abstract

PURPOSE:To prevent the sticking of splashed toner and fumed particles to the surface of a transparent glass, etc., by applying conductive thin film processing on the surface of a transparent partition material arranged between a flash discharge tube and paper. CONSTITUTION:Transparent electrically conductive thin film processing is applied on the surface of the transparent partition material 3. That is, the transparent glass 3 whose surface is coated with acetic ether solution of stannum ethoxide and printed at high temperature is used: the transparent electrically conductive film of approximately 800A is formed on the surface of the glass. Then, the transparent electrical conductive thin film processing is applied on the surface of the transparent partition material 3 arranged between the flash discharge tube 5 and the paper 10 and electrification on the surface of the partition material 3 is prevented. Thus, it is prevented that toner particles and fumed particles floating between the glass 3 and the paper 10 are electrostatically attracted onto the surface of the partition material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a flash fixing device used for fusing a visible image such as toner or ink formed on a sheet of paper.

[Conventional technology]

Flash fusing devices use flash energy from a xenon lamp or the like to fuse a visible image of toner ink on paper. The flash energy is extremely powerful and the emission is instantaneous.

[Problem to be solved by the invention]

For this reason, when the flash lamp is emitted, toner scattering occurs due to the emission sound and toner scattering due to paper vibration.

Also, toner melted by flash energy emits smoke.
It is fused to the paper with At this time, scattered toner and smoke particles adhere to the surface of the transparent glass placed between the flash lamp and the paper, staining the surface, reducing the transparency of the transparent material, and as a result, reducing the amount of flash energy transmitted through the paper. The adhesion properties were reduced.

If this dirt is not cleaned regularly, it will only accumulate and cause non-fixing problems. In order to prevent this, a lot of time is spent cleaning the glass, and this is the biggest factor in shortening the maintenance cycle.

As a result of experiments, it has been revealed that the main cause of toner and smoke particles adhering to the transparent material is electrostatic adsorption due to charging.

[Means to solve the problem]

In the present invention, charging of the surface of the transparent partition material is prevented by applying a transparent conductive thin film treatment to the surface of the transparent partition material.

In other words, by applying a transparent conductive thin film treatment to the surface of the transparent partition material placed between the flash discharge tube and the paper to prevent the surface of the partition material from being charged, toner particles and smoke particles floating between the glass and the paper can be removed. Prevents electrostatic adhesion to the surface of the partition material.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the paper 10 enters from the paper guide 1 side, is fixed between the paper guide 2 and the lamp assembly 4 by the light energy during the flash discharge, and is discharged to the next process by the feed rolls 9 and 11.

The lamp assembly 4 is constituted by a case 7, a mirror 6, a flash discharge tube 5, and a transparent glass 3, and the flash discharge tube 5 is protected from smoke generated in the fixing section and dirt caused by scattered toner.

In order to improve the fixing efficiency, the lamp assembly 4 is placed very close to the paper surface, and the distance between the paper surface and the transparent glass is usually 10 mm or less. Scattered toner smoke particles are generated in this space, but in the case of the present invention, a solution of tin ethoxide in acetic acid ether is applied to the surface of the transparent glass 3 and baked at a high temperature of 450°C to coat the glass surface. A transparent conductive film of about 800 layers is used. Therefore, electrostatic adhesion between the toner smoke particles floating in this space and the glass does not occur.

Although not shown in this figure, there is a mechanism in which these floating toner smoke particles are deodorized and then exhausted by an exhaust fan assembly installed on the lower surface of the flash fixing section.

Of course, other conductive materials are also possible. For example, there are methods such as vapor deposition and ion etching, and these methods can be applied to most metal materials. It is clear that ITD, MgF2, etc. also have transparency and conductivity.

〔Effect of the invention〕

As explained above, the present invention prevents stains on the transparent glass by applying a transparent conductive thin film treatment to the transparent glass used in the lamp assembly, thereby preventing deterioration of fixing properties and reducing maintenance work. Contribute.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a flash fixing device according to an embodiment of the present invention. 1.2...Paper guide, 3...Transparent glass, 4...Lamp assembly, 5...
...Flash discharge tube, 6...Mirror 7...
...Case, 8...Cover 9, l1...
・Feed roll paper, IO...Paper.

Claims (1)

[Claims] A flash fixing device that fuses a visible image formed on a sheet of paper to the sheet of paper, characterized in that a conductive thin film treatment is applied to the surface of a transparent partition material placed between a flash discharge tube and the sheet of paper. flash fixing device.