Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

US9057969B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9057969-B2
Application numberUS-201414167848-A
CountryUS
Kind codeB2
Filing dateJan 29, 2014
Priority dateJan 31, 2013
Publication dateJun 16, 2015
Grant dateJun 16, 2015

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.

First claim

Opening claim text (preview).

What is claimed is: 1. An electrophotographic photosensitive member comprising: a support; and a photosensitive layer formed on the support, wherein the photosensitive layer comprises: a compound represented by the following formula (1); and a gallium phthalocyanine, and wherein, the content of the compound represented by the formula (1) in the photosensitive layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine, H 2 N—CH 2 —R 1 —CH 2 —NH 2…

Assignees

Inventors

Classifications

Patent family

Related publications grouped by family.

External sources

Next steps

Free tools are coming soon. Tell us what you want to track and we'll notify you.

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9057969B2 cover?
A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.
Who is the assignee on this patent?
Canon Kk
What technology area does this patent fall under?
Primary CPC classification G03G7/00. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Jun 16 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).