Supercharge Your Innovation With Domain-Expert AI Agents!

Magnetic single component developer, developing method and imaging method

A developer, a single-component technology, applied in the direction of developer, electrography, optics, etc., can solve the problems of large size of developing device, difficult to suppress, and increased cost

Inactive Publication Date: 2007-03-28
FUJIFILM BUSINESS INNOVATION CORP
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still difficult to suppress a decrease in image density under stress conditions (for example, when a high-density image is continuously output) because the fluidity of the toner cannot be controlled with respect to the stirring efficiency of the stirring member
[0009] Also disclosed is a method of separately controlling the rotational speeds of a plurality of stirring members (see, for example, Japanese Patent Laid-Open No. 2001-201931) and a method of intermittently driving the stirring members (see, for example, Japanese Patent Laid-Open No. 2001-34051), but these methods still have a developing device Problems with increased size and cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic single component developer, developing method and imaging method
  • Magnetic single component developer, developing method and imaging method
  • Magnetic single component developer, developing method and imaging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0176] Preparation of toner (1)

[0177] Toner mother particles (1) 100 parts by weight

[0178] 1.5 parts by weight of silicon dioxide treated with silicone oil

[0179] (RY300 manufactured by Nippon Aerosil, primary particle size 7nm)

[0180] 2.3 parts by weight of silicon dioxide treated with HMDS (hexamethyldisilazane)

[0181] (H05TM produced by Wacker Chemie, the primary particle size is 40nm)

[0182] These components were mixed with a Henschel mixer to obtain a toner (1) having toner mother particles (1) and external additives added to the surface of the toner mother particles (1). Here, the silica treated with silicone oil was added after adding the silica treated with HMDS.

[0183] The total energy of the toner (1) was measured by a powder rheometer FT4 (manufactured by Freeman Technology) according to the method described above.

Embodiment 2～6 and comparative example 1～2

[0185] Inventive toners (2) to (6) and comparative toners (1) and (2) were prepared in the same manner as in Example 1 except that the type of toner mother particles and the silicone oil At least one of the amount of silica treated and the amount of silica treated by HMDS becomes the data shown in Table 1. The total energy of Toners (2) to (6) of the present invention and Comparative Toners (1) and (2) are summarized in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a single-component magnetic developer having a total energy amount of 10 to 100 mJ, measured with a powder rheometer at a rotor tip end speed of 100 mm / sec at a rotor helix angle of -5 DEG. at a ventilation rate of 20 ml / min; and a developing method, including agitating a developer in a developer container with an agitating member, forming a developer layer on a developer-carrying member, and applying an electric field to a development zone so as to develop a latent image on an electrostatic latent image-holding member with the developer layer, wherein the ratio Va / Vs of the rotational frequency Va of the agitating member to that Vs of the developer-carrying member is 0.05 to 2, and an image forming method.

Description

technical field [0001] The present invention relates to a magnetic one-component developer, a developing method, and an image forming method for developing electrostatic latent images in electrophotography and electrostatic recording. Background technique [0002] A method of visualizing image information by using an electrostatic latent image, such as electrophotography, is currently used in various fields. In the electrophotography method, an electrostatic latent image formed on a photosensitive drum in the steps of charging and exposing is developed with a developer containing toner, and the resulting toner image is printed on, for example, paper, etc. through the steps of transferring and fixing. Fixing on the recording medium. Examples of the type of developer used in the developing step include a two-component developer containing toner and a carrier, and a one-component developer containing only toner such as a magnetic toner or the like. [0003] The two-component ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/083G03G9/08G03G13/00
CPCG03G9/0836G03G9/0835G03G9/0837G03G9/09708G03G9/0819G03G9/0839G03G9/09725G03G9/0833G03G9/0821G03G9/0827
Inventor 石塚大辅武田智裕井上豊文
Owner FUJIFILM BUSINESS INNOVATION CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com