Image forming apparatus and fan operation controlling method

US20190354068A1

a technology of image forming apparatus and fan, which is applied in the direction of cooling/ventilation/heating modification, instruments, printing, etc., can solve the problems of exhaust fan emitted loud noise, loss of air flow, and lowering of the temperature inside the image forming apparatus

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Publication Date: 2019-11-21CANON KK

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Patent Information

Authority / Receiving Office: US · United States
Patent Type: Applications(United States)
Current Assignee / Owner: CANON KK
Publication Date: 2019-11-21

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Abstract

Provided is an image forming apparatus including: an image forming unit configured to form an image on a recording material; an exhaust fan configured to exhaust air inside the image forming apparatus; a CPU configured to control rotation of the exhaust fan; and a memory configured to store in advance a first control setting value for rotating the exhaust fan at a first target rotation speed. The CPU rotates the exhaust fan based on the first control setting value, and permits the image forming unit to form an image when a rotation speed of the exhaust fan becomes equal to or faster than a lower limit rotation speed for suppressing a discharge amount of UFPs. When a predetermined time period has elapsed, the CPU performs feedback control for the exhaust fan such that the exhaust fan is rotated faster than the first target rotation speed.

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Description

BACKGROUND OF THE INVENTIONField of the Invention

[0001] The present disclosure relates to an image forming apparatus, for example, a copying machine, a printer, or a facsimile machine, and more particularly, to control of a fan motor provided inside an image forming apparatus.Description of the Related Art

[0002] An image forming apparatus includes an exhaust fan motor (hereinafter referred to as “exhaust fan”) for suppressing an increase in temperature inside the image forming apparatus. The exhaust fan exhausts heated air inside the image forming apparatus. At a time of exhausting air, fine particles and the like may be discharged along with air. Such fine particles and the like are required to be reduced from the viewpoint of environmental protection. For example, in “Blue Angel”, German certification for products and services, a discharge amount of ultra-fine particles (UFPs), which are ultra-fine particles discharged from a product, is regulated. Therefore, the image forming appar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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