Toner cleaning sheet and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-9834889-B2
Application number	US-201415107997-A
Country	US
Kind code	B2
Filing date	Dec 24, 2014
Priority date	Dec 27, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A toner cleaning sheet includes at least one type of fiber selected from among different thermoplastic fibers formed of thermoplastic resin with a melting point of 265° C. or more and at least one type of fiber selected from among different cellulose fibers, wherein at least part of the aforementioned thermoplastic fiber is fusion-bonded to neighboring thermoplastic fiber filaments. The toner cleaning sheet can be produced by a method that includes at least one type of fiber selected from among different thermoplastic fibers formed of thermoplastic resin with a melting point of 265° C. or more and at least one type of fiber selected from among different cellulose fibers, the method including a bonding step in which at least part of the aforementioned thermoplastic fiber is fusion-bonded to neighboring thermoplastic fiber filaments.

First claim

The invention claimed is:

1. A toner cleaning sheet comprising at least one kind of the thermoplastic fiber selected from polyphenylene sulfide fiber, polytetrafluoroethylene fiber, ethylene-tetrafluoroethylene copolymer fiber, liquid crystal polyester fiber, polyethylene naphthalate fiber, polyether ether ketone fiber and triacetate fiber, and at least one kind of fiber selected from among different cellulose fibers, wherein at least part of the thermoplastic fiber is fused and bonded to neighboring thermoplastic fiber filaments.

2. The toner cleaning sheet as claimed in claim 1 , wherein the cellulose fiber is wood pulp fiber.

3. The toner cleaning sheet as claimed in claim 2 , wherein the thermoplastic fiber contains both stretched filaments and unstretched filaments.

4. The toner cleaning sheet as claimed in claim 2 , wherein a ratio between the at least one kind of fiber selected from among different thermoplastic fibers and the at least one kind of fiber selected from among different cellulose fibers is 8:2 to 2:8 by mass.

5. The toner cleaning sheet as claimed in claim 1 , wherein the thermoplastic fiber contains both stretched filaments and unstretched filaments.

6. The toner cleaning sheet as claimed in claim 5 , wherein the stretched filaments are stretched polyphenylene sulfide filaments and the unstretched filaments are unstretched polyphenylene sulfide filaments.

7. The toner cleaning sheet as claimed in claim 6 , wherein a ratio between the at least one kind of fiber selected from among different thermoplastic fibers and the at least one kind of fiber selected from among different cellulose fibers is 8:2 to 2:8 by mass.

8. The toner cleaning sheet as claimed in claim 5 , wherein a ratio between the at least one kind of fiber selected from among different thermoplastic fibers and the at least one kind of fiber selected from among different cellulose fibers is 8:2 to 2:8 by mass.

9. The toner cleaning sheet as claimed in claim 1 , wherein a ratio between the at least one kind of fiber selected from among different thermoplastic fibers and the at least one kind of fiber selected from among different cellulose fibers is 8:2 to 2:8 by mass.

10. The toner cleaning sheet as claimed in claim 9 , wherein a ratio between the stretched polyphenylene sulfide filaments and the unstretched polyphenylene sulfide filaments is 7:3 to 3:7 by mass.

Assignees

• Toray Industries

Inventors

• Naruko Satoshi
• Kimura Takashi

Classifications

• G03G15/2025

  with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid · CPC title

• D21H11/00

  Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only · CPC title

• D04H3/14

  with bonds between thermoplastic yarns or filaments produced by welding · CPC title

• D21H13/20 Primary

  from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• D21H13/12

  from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title