Heating device, fixing device, and image forming apparatus
US-2023205118-A1 · Jun 29, 2023 · US
Heating device including a lubricant holding region, a fixing device including the same, and an image forming apparatus including the same
US12487545B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12487545-B2 |
| Application number | US-202318718633-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 24, 2023 |
| Priority date | Mar 3, 2022 |
| Publication date | Dec 2, 2025 |
| Grant date | Dec 2, 2025 |
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Abstract
Official abstract text for this publication.
A heating device includes a rotator, a pressure rotator, a heater, a holder, and lubricant. The heater inside the rotator forms a sliding nip between the rotator and the heater. The heater includes a resistive heat generator inside the sliding nip. The lubricant is applied to the inner surface of the rotator and a sliding surface of the heater. The lubricant is held in a lubricant holding region outside the sliding nip and between the rotator and the heater. An application quantity P of the lubricant satisfies the following. A×X 1× B×C≤P≤D×C where A is a height of irregularities on the inner surface of the rotator, X1 is a longitudinal length of the rotator, B is a circumferential length of the rotator, C is a specific weight of the lubricant, and D is a volume of the lubricant holding region.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A heating device comprising: a tubular rotator; a pressure rotator configured to form an outer surface nip between the tubular rotator and the pressure rotator; a heater inside a loop of the tubular rotator, the heater configured to form a sliding nip between an inner circumferential surface of the tubular rotator and the heater, the heater including, a base, and a resistive heat generator inside the sliding nip in a recording medium conveyan…
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Classifications
Physics · mapped topic
- G03G15/2053Primary
Physics · mapped topic
- G03G15/2025Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US12487545B2 cover?
- A heating device includes a rotator, a pressure rotator, a heater, a holder, and lubricant. The heater inside the rotator forms a sliding nip between the rotator and the heater. The heater includes a resistive heat generator inside the sliding nip. The lubricant is applied to the inner surface of the rotator and a sliding surface of the heater. The lubricant is held in a lubricant holding regio…
- Who is the assignee on this patent?
- Adachi Tomoya, Furuichi Yuusuke, Someya Yukimichi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/2053. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 02 2025 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).