Image forming apparatus and image forming method

Patent metadata

Field	Value
Publication number	US-9760039-B2
Application number	US-201615207688-A
Country	US
Kind code	B2
Filing date	Jul 12, 2016
Priority date	Nov 4, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

An image forming apparatus and an image forming method through which an effect of granting flavor to a printing object is excellent. In accordance with an embodiment, an image forming apparatus comprises a developing device and a fixing device. A toner is housed in the developing device. The fixing device includes a fixing roller and a pressure roller. The toner contains binder resin and a microcapsule in which perfume is encapsulated. A glass transition temperature of the toner is below 60 degrees centigrade. A nip part is formed by the fixing roller and the pressure roller. A pressure applied to an image receiving medium passing through the nip part is below 0.19 N/mm 2 .

First claim

What is claimed is:

1. An image forming apparatus, comprising:
a developing device housing a toner; and
a fixing device comprising a fixing roller and a pressure roller, wherein
the toner comprising binder resin and a plurality of microcapsules dispersed therein, each of the microcapsules comprising a liquid material; and
a nip part is formed by the fixing roller and the pressure roller, and pressure applied to an image receiving medium passing through the nip part is below 0.19 N/mm 2 .

2. The image forming apparatus according to claim 1 , wherein
a glass transition temperature of the toner is below 60 degrees centigrade.

3. The image forming apparatus according to claim 2 , wherein
a glass transition temperature of the toner is above 25 degrees centigrade.

4. The image forming apparatus according to claim 1 , wherein
a glass transition temperature of the binder resin is 20˜65 degrees centigrade.

5. The image forming apparatus according to claim 1 , wherein
the toner comprises toner particles comprising binder resin and a plurality of microcapsules dispersed therein a volume average particle diameter of the toner particles is 3˜20 μm.

6. The image forming apparatus according to claim 1 , wherein
a volume average particle diameter of the microcapsule is 0.10˜10 μm.

7. The image forming apparatus according to claim 1 , wherein
content of the microcapsule in the toner is 1˜20 mass %.

8. The image forming apparatus according to claim 1 , wherein
the liquid material comprises at least one of brominated styrene, phenyl ethyl alcohol, linalool, hexylcinnamic aldehyde, α-limonene, benzyl aldehyde, eugenol, bornyl aldehyde, citronellal, kororaru, terpineol, geraniol, menthol, and cinnamic acid.

9. The image forming apparatus according to claim 1 , wherein
wall film of the microcapsule contains at least one kind of material selected from a group consisting of melamine-formaldehyde resin and urethane resin.

10. The image forming apparatus according to claim 1 , wherein
a width of the nip part formed by the fixing roller and the pressure roller is above 7.5 mm.

11. An image forming method using the image forming apparatus according to claim 1 , wherein
transferring a toner image consisting of the toner onto the image receiving medium;
applying pressure smaller than 0.19 N/mm 2 to the image receiving medium passing through the nip part; and
fixing the toner image on the image receiving medium.

12. An image forming apparatus, comprising:
a developing device housing a toner; and
a fixing device comprising a fixing roller and a pressure roller, wherein
the toner comprising binder resin and a plurality of encapsulated microcapsules comprising liquid material dispersed therein; and
a nip part is formed by the fixing roller and the pressure roller, and pressure applied to an image receiving medium passing through the nip part is below 0.19 N/mm 2 .

13. The image forming apparatus according to claim 12 , wherein
a glass transition temperature of the toner is below 60 degrees centigrade.

14. The image forming apparatus according to claim 13 , wherein
a glass transition temperature of the toner is above 25 degrees centigrade.

15. The image forming apparatus according to claim 12 , wherein
a glass transition temperature of the binder resin is 20˜65 degrees centigrade.

16. The image forming apparatus according to claim 12 , wherein
the toner comprises toner particles comprising binder resin and a plurality of encapsulated microcapsules dispersed therein a volume average particle diameter of the toner particles is 3˜20 μm.

17. The image forming apparatus according to claim 12 , wherein
a volume average particle diameter of the encapsulated microcapsules is 0.10˜10 μm.

18. The image forming apparatus according to claim 12 , wherein
content of the encapsulated microcapsules in the toner is 1˜20 mass %.

19. The image forming apparatus according to claim 12 , wherein
the encapsulated microcapsules comprise liquid perfume.

20. The image forming apparatus according to claim 12 , wherein
the encapsulated microcapsules comprises at least one of brominated styrene, phenyl ethyl alcohol, linalool, hexylcinnamic aldehyde, α-limonene, benzyl aldehyde, eugenol, bornyl aldehyde, citronellal, kororaru, terpineol, geraniol, menthol, and cinnamic acid.

Assignees

• Toshiba Kk
• Toshiba Tec Kk

Inventors

• Takano Taishi
• Yoshida Maiko
• Araki Satoshi
• Urabe Takashi

Classifications

• G03G15/16 Primary

  of a toner pattern, e.g. a powder pattern {, e.g. magnetic transfer} · CPC title

• G03G9/00

  Developers · CPC title

• G03G15/2064 Primary

  combined with pressure · CPC title

• G03G15/206 Primary

  Structural details or chemical composition of the pressure elements and layers thereof · CPC title

• G03G9/0935

  specified by the core material · CPC title