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Ceramic heating sheet and manufacturing method thereof

A technology of ceramic heating sheet and heating wire, applied in heating element materials, ohmic resistance heating, electric heating devices, etc., can solve the problems of short service life and large resistance change.

Active Publication Date: 2015-09-23
保定莱盛办公设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to design reasons, the traditional ceramic heating plate has the disadvantages of short service life and large resistance changes due to the influence of the glass body.

Method used

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  • Ceramic heating sheet and manufacturing method thereof
  • Ceramic heating sheet and manufacturing method thereof
  • Ceramic heating sheet and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0022] Correspondingly, the present invention also provides a method for preparing a ceramic heating chip, comprising the following steps:

[0023] 101: printing conductive paste on the ceramic substrate;

[0024] 102: One-time high-temperature sintering;

[0025] 103: printing precious metal paste;

[0026] 104: secondary high temperature sintering;

[0027] 105: printing glass glaze paste;

[0028] 106: three times high temperature sintering,

[0029] Obtain ceramic heating plate, described noble metal slurry comprises following composition: P d : 35wt% ~ 85wt%; A g : 10wt% ~ 40wt%; S i o 2 : 1wt% ~ 4wt%; Al 2 o 3 : 2wt% ~ 5wt%; M n o 2 : 1wt% ~ 6wt%; CaO: 0 ~ 6wt%; the balance is cellulose and terpineol. As a preferred version, the noble metal slurry includes the following components: P d : 40wt% ~ 80wt%; A g : 20wt% ~ 30wt%; S i o 2 : 2wt% ~ 3wt%; Al 2 o 3 : 3wt% ~ 4wt%; M n o 2 : 2wt% ~ 5wt%; CaO: 1wt% ~ 5wt%; the balance is cellulose and terpineol.

[...

Embodiment 1

[0040] Step 101: Printing conductive paste on the ceramic substrate, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering;

[0041] Step 102: primary high-temperature sintering, the temperature of the primary high-temperature sintering is 800° C., and the holding time is 5 minutes;

[0042] Step 103: printing precious metal paste, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering, the precious metal paste includes the following components: P d : 50wt%; A g : 30wt%; S i o 2 : 3wt%; Al 2 o 3 : 4wt%; M n o 2 : 5wt%; CaO: 5wt%, the balance is cellulose and terpineol;

[0043] Step 104: secondary high-temperature sintering, the temperature of the secondary high-temperature sintering is 850° C., and the holding time is 10 minutes;

[0044] Step 105: printing glass glaze paste, including: photographic master plate, photosensitive, developing, fixing, printing, leveling, ...

Embodiment 2

[0064] Step 101: Printing conductive paste on the ceramic substrate, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering;

[0065] Step 102: primary high-temperature sintering, the temperature of the primary high-temperature sintering is 800° C., and the holding time is 5 minutes;

[0066] Step 103: printing precious metal paste, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering, the precious metal paste includes the following components: P d : 60wt%; A g : 25wt%; S i o 2 : 2wt%; Al 2 o 3 : 2wt%; M n o 2 : 2wt%; CaO: 2wt%, the balance is cellulose and terpineol;

[0067] Step 104: secondary high-temperature sintering, the temperature of the secondary high-temperature sintering is 850° C., and the holding time is 10 minutes;

[0068] Step 105: printing glass glaze paste, including: photographic master plate, photosensitive, developing, fixing, printing, leveling, ...

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Abstract

The invention provides a ceramic heating sheet. A resistance heating wire is sintered on a ceramic substrate. Two ends of the resistance heating wire are provided with conductive electrodes. A medium cover layer is arranged outside the resistance heating wire. The resistance heating wire comprises 35wt%-85wt% of Pd, 10wt%-40wt% of Ag, 1wt%-4wt% of SiO2, 2wt%-5wt% of Al2O3, 1wt%-6wt% of MnO2, 0-6wt% of CaO and balance being cellulose and terpilenol. Correspondingly, the invention also provides a manufacturing method of the ceramic heating sheet. Compared to the prior art, by using the ceramic heating sheet and the method of the invention, a content proportion of the noble metal palladium in the resistance heating wire is increased so that flashback performance of a high-temperature sintering film resistor on a ceramic wafer is improved; a service life is prolonged and a resistance change rate influenced by a vitreous body is reduced.

Description

technical field [0001] The invention relates to the technical field of printer consumables, in particular to a ceramic heating chip and a preparation method thereof. Background technique [0002] The heating and fixing system is an important part of modern laser printers and copiers. Its function is to convert the toner image adsorbed on the printing paper after the four steps of charging, exposure, development, and transfer to The toner adsorbed on the printing paper is heated to 180°C to 220°C, and the melted toner is immersed in the printing paper to form a fixed image. This process is called "fixing". The heating and fixing system is mainly composed of heating roller, heating element (ceramic heating element or heating filament), pressure rubber roller, temperature controller (thermistor), thermal protector (thermal switch) and other parts. Among them, the heating element currently has two methods: ceramic heating sheet and halogen lamp tube. Due to its high power (110...

Claims

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Application Information

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IPC IPC(8): H05B3/22H05B3/10C03C8/10G03G15/20
Inventor 崔凤来赵文霞徐伟强
Owner 保定莱盛办公设备有限公司
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