Low temperature fixing toner
AssigneeSamsung Electronics Co., Ltd.
InventorHee-won Jung
Life of this patent
Estimating the term…
Abstract
A toner includes a binder resin, a charge control agent, and a pigment. The binder resin includes a main binder resin and 10 to 100 parts by weight of crystalline polyester that maintains a polymer chain orientation even in a molten state, based on the main binder resin. Therefore, the toner may be fixed at a low temperature, while maintaining long-term storage stability and durability. As a result, the aging of a fixing apparatus, the curling of sheets of paper, and excess energy consumption may be overcome. Furthermore, since separate equipment and a structural change of a fixing apparatus are not required, an existing printer model may be used. Since the time required for fixing is short, high-speed printing is facilitated.
Claims7
A toner comprising:
- a binder resin comprising a main binder resin and 10 to 100 parts by weight of crystalline polyester, based on 100 parts by weight of the main binder resin,
- the crystalline polyester comprising diol represented by Formula 1 below:
- wherein, R1 and R2 are hydrogen or methyl, and n and m are 1 or 2;
- 2 to 25 moles of carboxylic anhydride represented by Formula 2 below, based on 100 moles of the diol of Formula 1:
- wherein, R3 is an alkyl group of C1-12;
- 20 to 50 moles of terephthalic acid, based on 100 moles of the diol of Formula 1;
- and
- 2 to 15 moles of trimellitic anhydride represented by Formula 3 below, based on 100 moles of the diol of Formula 1:
- a charge control agent;
- and
- a pigment.
A toner comprising:
- a binder resin comprising a main binder resin and 10 to 100 carts by weight of crystalline polyester, based on 100 parts by weight of the main binder resin,
- the crystalline polyester comprising diol represented by Formula 1 below:
- wherein, R1 and R2 are hydrogen or methyl, and n and m are 1 or 2;
- 2 to 25 moles of carboxylic anhydride represented by Formula 2 below, based on 100 moles of the diol of Formula 1:
- wherein, R3 is an alkyl group of C1-12;
- 20 to 50 moles of terephthalic acid, based on 100 moles of the diol of Formula 1;
- and
- 2 to 15 moles of trimellitic anhydride represented by Formula 3 below, based on 100 moles of the diol of Formula 1:
- a charge control agent;
- and
- a pigment,
- wherein the main binder resin and the crystalline polyester are blended or form a copolymer.
Dependencies are inferred from the claim text.