http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10670998-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4af0df9a26ff4aafde7285cbd8eb12f4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-08797 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-08795 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G15-1605 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-0825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-08711 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-08782 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-08755 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G15-1675 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G15-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G9-087 |
| filingDate | 2019-08-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_980669193b9972b5a932ba16d3b29015 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36ffd82cb4086816e7a87d181fa229df |
| publicationDate | 2020-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-10670998-B1 |
| titleOfInvention | Image forming apparatus including an electrostatic image developer including a toner |
| abstract | An image forming apparatus includes: an image holding member; a charging unit that charges a surface of the image holding member; an electrostatic image forming unit that forms an electrostatic image on the charged surface of the image holding member; a developing unit that houses an electrostatic image developer including a toner containing an external additive and develops the electrostatic image formed on the surface of the image holding member with the electrostatic image developer to thereby form a toner image; a transfer unit that transfers the toner image formed on the surface of the image holding member onto a surface of a recording medium directly or through an intermediate transfer body; and a fixing unit that fixes the toner image transferred onto the surface of the recording medium. The transfer unit includes a contact portion-forming member that comes into contact with the image holding member or the intermediate transfer body to form a contact portion and a transfer bias application unit that applies a transfer bias including a superimposed voltage to the contact portion. The superimposed voltage has two peak values and is composed of an AC voltage and a DC voltage. The AC voltage has a duty ratio D of less than 50% on a peak value side opposite to a peak value that causes the toner in the contact portion to move from the image holding member or the intermediate transfer body toward the contact portion-forming member. The DC voltage causes the electric potential of the contact portion-forming member to be shifted to the side opposite to the charge polarity of the toner such that the absolute value of the electric potential of the contact portion-forming member is larger than the absolute value of the electric potential of the image holding member or the intermediate transfer body. The toner satisfies the following formulas:n n(ln η( T 1)−ln η( T 2))/( T 1− T 2)≤−0.14;n n(ln η( T 2)−ln η( T 3))/( T 2− T 3)≥−0.15; andn n(ln η( T 1)−ln η( T 2))/( T 1− T 2)<(ln η( T 2)−ln η( T 3))/( T 2− T 3),n where η(T1) is the viscosity of the toner at 60° C., η(T2) is the viscosity of the toner at 90° C., and η(T3) is the viscosity of the toner at 130° C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11112733-B2 |
| priorityDate | 2019-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 202.