Dryer and printer
US-2020207120-A1 · Jul 2, 2020 · US
Heating device and printer
US11198308B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11198308-B2 |
| Application number | US-202016933803-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 20, 2020 |
| Priority date | Aug 21, 2019 |
| Publication date | Dec 14, 2021 |
| Grant date | Dec 14, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A heating device includes a heater to heat an object to be heated, a temperature detector to detect a surface temperature of the heater, a power calculator to calculate a power consumption of the heater, an abnormality detector to detect an abnormality of the temperature detector, and circuitry to cause the heater to increase the surface temperature of the heater from a first temperature to a second temperature higher than the first temperature; cause the power calculator to calculate the power consumption of the heater increased to the second temperature; cause the abnormality detector to compare the power consumption calculated by the power calculator and a predetermined threshold value; and cause the abnormality detector to determine that the temperature detector is abnormal when the power consumption calculated by the power calculator is equal to or larger than the predetermined threshold value.
First claim
Opening claim text (preview).
What is claimed is: 1. A heating device comprising: a heater configured to heat an object to be heated; a temperature detector configured to detect a surface temperature of the heater; a power calculator configured to calculate a power consumption of the heater; an abnormality detector configured to detect an abnormality of the temperature detector; and circuitry configured to: cause the heater to increase the surface temperature of the heater from a first temperature to a second temperature higher than the first temperature; cause the power calculator to calculate the power consumption of the heater increased to the second temperature; cause the abnormality detector to compare the power consumption calculated by the power calculator and a predetermined threshold value; and cause the abnormality detector to determine that the temperature detector is abnormal when the power consumption calculated by the power calculator is equal to or larger than the predetermined threshold value. 2. The heating device according to claim 1 , wherein the power calculator multiplies time and a current value applied to the heater, while the circuitry increases the surface temperature of the heater, to calculate the power consumption of the heater. 3. The heating device according to claim 1 , wherein the power calculator multiplies time and an effective power applied to the heater, while the circuitry increases the surface temperature of the heater, to calculate the power consumption of the heater. 4. The heating device according to claim 1 , wherein the temperature detector detects the surface temperature of the heater in a contactless manner. 5. The heating device according to claim 1 , wherein the abnormality detector outputs information related to an abnormality of the temperature detector. 6. A printer comprising: a liquid application device configured to apply a liquid on an object to be printed; and the heating device according to claim 1 , the heating device configured to dry the liquid on the object to be printed.
Assignees
Inventors
Classifications
- B41J11/0024Primary
using conduction means, e.g. by using a heated platen · CPC title
Supporting, feeding, or guiding devices; Mountings for web rolls or spindles · CPC title
using convection means, e.g. by using a fan for blowing or sucking air · CPC title
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Frequently asked questions
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- What does patent US11198308B2 cover?
- A heating device includes a heater to heat an object to be heated, a temperature detector to detect a surface temperature of the heater, a power calculator to calculate a power consumption of the heater, an abnormality detector to detect an abnormality of the temperature detector, and circuitry to cause the heater to increase the surface temperature of the heater from a first temperature to a s…
- Who is the assignee on this patent?
- Yoshinuma Toshihiro, Ricoh Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B41J11/0024. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 14 2021 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).