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Toner for electrostatic charge development, developer using the same, developer cartridge and image forming apparatus

An imaging device, a toner image technology, applied in the direction of developer, electric recording process using charge pattern, equipment for electric recording process using charge pattern, etc., can solve problems affecting printed images, etc., and achieve good readability Effect

Inactive Publication Date: 2008-03-26
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although various pigment molecules have been proposed as infrared absorbers, for example, when forming an invisible image, in order to easily detect the infrared absorbing pattern with a machine, the concentration of the infrared absorber contained in the toner used is increased There will be a problem that the printed image will be affected because the visible light absorption of the toner is also increased

Method used

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  • Toner for electrostatic charge development, developer using the same, developer cartridge and image forming apparatus
  • Toner for electrostatic charge development, developer using the same, developer cartridge and image forming apparatus
  • Toner for electrostatic charge development, developer using the same, developer cartridge and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0264]

[0265] 4.0 parts by weight of 2,3-dicyano-1-phenylnaphthalene (the compound represented by the above structural formula (2)), 0.3 parts by weight of vanadyl trichloride, 1.2 parts by weight of 1,8-diazepine as raw materials were mixed. heterobicyclo[5.4.0]-7-undecene and 20 parts by weight of n-aminoalcohol, and then the resulting material was stirred for 6 hours under reflux under heating. After cooling, the resulting mixture was poured into 100 mL of methanol, and the precipitate was filtered off. Next, this precipitate was put into pure water, boiled and washed, and then purified by column chromatography; thereby synthesizing the above "compound represented by structural formula (1)".

[0266] The obtained compound is subjected to an acid paste treatment, thereby being micronized to a desired particle size; thus an infrared absorber A is obtained. Specifically, the process involves dissolving infrared absorber A in 96% concentrated sulfuric acid (120 times the w...

Embodiment 2

[0273]

[0274] Infrared absorbent B was obtained using the same method as in the case of infrared absorbent A except that ultimizer treatment was performed instead of acid paste treatment as pulverization treatment. (Specifically, using Ultimizer-HJP-2500, under a pressure of 230 MPa, 20Pass treatment was carried out to an aqueous solution of 10% by weight of an infrared absorber and 10 parts by weight of a dispersant (trade name: Newlex Paste H, manufactured by NOF Corporation) ( 32 minutes); thus obtained particles.)

[0275] The volume average particle diameter of the infrared absorber B thus obtained was 0.32 μm.

[0276]

[0277] Toner B was obtained using the same method as in producing Toner A except that Infrared Absorber B was used instead of Infrared Absorber A.

Embodiment 3

[0292]

[0293] 0.5 parts by weight of the above-mentioned infrared absorber "VONPc-Ph" ​​(manufactured by Sigma-Aldrich Inc.), 0.5 parts by weight of anionic surfactant (dodecylbenzenesulfonic acid) and 99 parts by weight of ion-exchanged water were mixed, and homogenized (trade name: Ultratalux T50, manufactured by IKA Co., Ltd.) was used to disperse the resulting solution for 10 minutes, and then dispersed using a circulating ultrasonic dispersion device (trade name: RUS-600TCVP, manufactured by Nippon Seiki Seisakusho); as a result, Infrared absorber dispersion A'.

[0294] The volume average particle diameter of the infrared absorber obtained in the infrared absorber dispersion A' was 0.13 µm, and the solid content ratio of the infrared absorber was 0.5% by weight.

[0295]

[0296] Put 65 parts by weight of dimethyl adipate, 183 parts by weight of dimethyl terephthalate, 223 parts by weight of bisphenol A-ethylene oxide adduct, 38 parts by weight of ethylene glycol a...

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Abstract

The invention provides a toner for electrostatic charge development including a binder resin and an infrared absorber, wherein at least one of the infrared absorbers is a compound represented by Structural Formula (1).

Description

technical field [0001] The present invention relates to a toner for electrostatic charge development which can be used in an electrophotographic device such as a copying machine, a printer or a facsimile machine using an electrophotography method or an electrostatic method, and to a product using the toner A developer for electrostatic charge development, a developer cartridge for electrostatic charge development, and an image forming apparatus. Background technique [0002] The technique of embedding invisible information into paper to improve security and integrate with the electronic environment has received a lot of attention. Specific examples of invisible information include information patterns (such as personal information) and non-information patterns (such as detection marks) with some specific information. The information pattern may comprise, for example, an encoding pattern. For example, the coding pattern may include a barcode, and the barcode may include not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/087G03G9/08G03G15/08G03G15/00
Inventor 古木真田民权渡边美穗松原崇史
Owner FUJIFILM BUSINESS INNOVATION CORP
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