Controlling apparatus, image heating apparatus and image forming apparatus
US-2015104205-A1 · Apr 16, 2015 · US
Fixing device and image forming apparatus incorporating same
US2016306304A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016306304-A1 |
| Application number | US-201615097663-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 13, 2016 |
| Priority date | Apr 17, 2015 |
| Publication date | Oct 20, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A fixing device includes a heater, a fixing rotator, a pressure rotator, a slider, and a controller. The fixing rotator is heated by the heater. The pressure rotator presses at least a portion of the fixing rotator and forms a nip between the pressure rotator and the fixing rotator. The fixing rotator fixes an unfixed toner image on a recording material in the nip. The slider slides over a surface of the fixing rotator. The controller causes the slider to perform a first sliding operation for a predetermined time after a predetermined condition is satisfied. The controller causes the slider to perform a second sliding operation for a time equal to or less than the predetermined time at earlier timing than when the predetermined condition is satisfied, in addition to the first sliding operation.
First claim
Opening claim text (preview).
What is claimed is: 1 . A fixing device comprising: a heater; a fixing rotator to be heated by the heater; a pressure rotator to press at least a portion of the fixing rotator and form a nip between the pressure rotator and the fixing rotator, the fixing rotator to fix an unfixed toner image on a recording material in the nip; a slider to slide over a surface of the fixing rotator; and a controller to cause the slider to perform a first sliding operation for a predetermined time after a predetermined condition is satisfied, the controller to cause the slider to perform a second sliding operation for a time equal to or less than the predetermined time at earlier timing than when the predetermined condition is satisfied, in addition to the first sliding operation. 2 . The fixing device according to claim 1 , wherein the controller causes the slider to perform the first sliding operation and the second sliding operation between jobs. 3 . The fixing device according to claim 1 , wherein the predetermined condition to perform the first sliding operation is that a first predetermined number of sheets as the recording material passes the nip, and the earlier timing to perform the second sliding operation is after a second predetermined number of sheets less than the first predetermined number of sheets passes the nip. 4 . The fixing device according to claim 3 , wherein the controller counts a number of passed sheets of each width of the recording material, and causes the slider to perform the first sliding operation and the second sliding operation based on the number of passed sheets of each width. 5 . The fixing device according to claim 3 , wherein the controller counts a number of passed sheets by multiplexing a weighting coefficient according to a type of the recording material. 6 . The fixing device according to claim 5 , wherein the weighting coefficient is arbitrarily settable. 7 . The fixing device according to claim 1 , wherein the controller causes the slider to perform the second sliding operation twice or more at different timings and in different execution time periods. 8 . The fixing device according to claim 1 , wherein a time period of at least one of the first sliding operation and the second sliding operation is arbitrarily settable. 9 . An image forming apparatus comprising the fixing device according to claim 1 .
Assignees
Inventors
Classifications
- G03G15/205Primary
specially for the mode of operation, e.g. standby, warming-up, error (G03G15/2046 takes precedence) · CPC title
- G03G15/2025Primary
with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid · CPC title
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Frequently asked questions
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- What does patent US2016306304A1 cover?
- A fixing device includes a heater, a fixing rotator, a pressure rotator, a slider, and a controller. The fixing rotator is heated by the heater. The pressure rotator presses at least a portion of the fixing rotator and forms a nip between the pressure rotator and the fixing rotator. The fixing rotator fixes an unfixed toner image on a recording material in the nip. The slider slides over a surf…
- Who is the assignee on this patent?
- Hemmi Kaori, Okamoto Masami, Kubota Keisuke, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/205. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Oct 20 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).