Curing reaction of fixing?????????? 10

The fusing unit starts with the state that the toner leaks out and cannot be firmly attached to the paper, but through the heating of the fusing unit, the toner melts deep into the paper fiber, and it becomes the printed appearance. If the fixing component is broken, it will appear, and the fixing will not work, and the words on the paper can be erased by hand. Some printed black stains may also be caused by toner sticking to the fixer.

It is the part of the photocopier or printer that melts the toner on the paper with content at high temperature and high pressure and fixes it on the paper, which is called the fusing unit. The photocopier has a fixer on (metal), a lower stick (glue), a separation claw, and a sensor; Printers are similar, such as Canon, HP's fixing components mainly include ceramic heating sheets, fuser films, glue sticks, separating claws, and sensors.

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Fixing effect: Heating and curing toner, broken paper jams, font falling off, wrinkled paper, too dirty, etc.

Unblocking reaction and cross-linking reaction.

For the two reactions in a row, the finger seal reaction occurs first and is the control step of the series of reactions, and the two reactions can be treated as an overall reaction when studying, which is called the curing reaction. Number of pins.

Drum assembly: photoelectric conversion imaging.

Development unit: powder supply control.

Fixing Component: Solidifies the image.

Good afternoon, after the general thermosetting resin is added to the curing ingredients such as acid, anhydride or amine, the polymerization reaction will not occur at room temperature (not absolutely, but the slow ring opening rate in the low temperature environment is simply unbearable, and it will maintain the viscous liquid appearance in the figure for a long time. ）。The reason why thermal curing is this physical method is mainly to use high temperature to force the monomer to react with the curing agent to open the ring and close the loop polymerization, and the necessary factor before chemical crosslinking is to provide it with high enough energy to make the curing agent exceed the energy barrier - such as MF, UF, phenolic, furfural, furfural and acid anhydride epoxy, etc.

The Samsung printer fuser is malfunctioning and it shows "U1-2320", this situation should be a problem that the fuser is not heating up, you can try the following solutions:

Turn the power off and back on. Press and hold the Power Start button for about three seconds to turn the machine off and back on after a while.

Check whether there is a paper card owner in the fixing part, and if there is a paper jam, you can take it out.

The unstable power supply voltage has affected the machine, and it is necessary to keep the power supply stable.

Fusing film: A film of special high-temperature resistant material used for fusing during copying or printing, which can reduce the warm-up standby time and achieve zero start, which has a significant impact on the copying or printing effect.

The fuser film is multi-layered, generally divided into three layers: forming layer, base coating, and surface coating; The surface of the fixing film is non-sticky, and can conduct electricity and heat. The fuser film is a fragile part of the fuser, and it is possible to accidentally damage or wear out after every tens of thousands of prints.

The fixing film you are talking about is generally used on HP printers, and it is mainly heated in order to cure the toner.

The printing market generates high temperatures, which heats and melts the words on the paper and fixes them, and if you print out the words and spend a smear, then your fuser film is broken.

You should know it just by looking at the name, fixing!

There is no chemical reaction between the two.

Curing agent, also known as hardener, curing agent or metastasis, is a class of substances or mixtures that enhance or control the curing reaction. Resin curing is a chemical reaction such as condensation, closed loop, addition or catalysis, which makes the thermosetting resin irreversibly change, and the curing is completed by adding a curing (crosslinking) agent.

There are two principles to be paid attention to when writing chemical equations: first, it must be based on objective facts, and it is absolutely impossible to conjecture or fabricate substances and chemical reactions that do not actually exist; Second, it is necessary to abide by the law of conservation of mass, and the types and numbers of the original mu trapped on both sides of the equal sign must be equal.

Chemical reaction: The process by which molecules break down into atoms, and the atoms rearrange and combine to form new substances, called chemical reactions. In the reaction, it is often accompanied by luminescence, heat, discoloration, and the formation of precipitate, etc., and the basis for judging whether a reaction is a chemical reaction is whether the reaction generates new substances.

Substance: It is the process by which old chemical bonds are broken and new chemical bonds are formed.

In the reaction, it is often accompanied by luminescence, heating, discoloration, and the formation of precipitates. The basis for determining whether a reaction is chemical is whether the reaction produces a new substance. According to the theory of chemical bonds, it can be judged whether a chemical reaction is based on whether there is the breaking of old bonds and the formation of new bonds in a change process.

Reaction phenomenon: exothermic, endothermic, luminous, discolored, precipitation, gas.

Reversible vs. Spontaneous Reactions:

Every chemical reaction is theoretically reversible. A positive reaction defines the conversion of a substance from a reactant into a product. The reverse reaction is the opposite, where the product is converted into reactants.

Chemical equilibrium refers to a state in which the positive and reverse reaction rates are equal, so that both reactants and products are present. However, the direction of the reaction in the equilibrium state can be changed by changing the reaction state, such as temperature or pressure. Le Chatre's principle is used here for product or reactant formation.

Although all reactions are reversible to some extent, some reactions can still be classified as irreversible. "Irreversible reaction" means "complete reaction". This means that almost all reactants form products, and even in extreme cases, the reaction is difficult to reverse.

Another reaction mechanism is called spontaneous reaction, which is a thermodynamic tendency that indicates that this reaction causes a net increase in overall entropy. Spontaneous reactions (as opposed to non-spontaneous reactions) occur without the need for external assistance (e.g., energy supply). In a chemically balanced system, the direction of the spontaneous reaction during the reaction can be expected to form more substances.

There are many categories in organic chemistry, including free radical reactions and ionic reactions; electrophilic reaction, nucleophilic reaction; Nitrification, halogenation, sulfonation, ammoniation, acylation, cyanidation, addition, elimination, substitution, polyaddition, polycondensation, etc.