MUMBAI, India, April 20 -- Intellectual Property India has published a patent application (202514076319 A) filed by Canon Kabushiki Kaisha, Tokyo, on Aug. 11, 2025, for 'heating device and image forming apparatus.'
Inventor(s) include Itoh, Masatoshi; Kumada, Hiromitsu; and Matayoshi, Yasumasa.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "A heating device includes a heater, a switching element connected between the heater and an AC power, and a controller performing a wave number control. A power control pattern includes a first pattern of which a control period is a first number, equal to or more than 2, of half waves and which satisfies a positive/negative symmetry, and a second pattern of which the control period is a second number, equal to or more than 2 and divisible by 4, of half waves and which satisfies the positive/negative symmetry. The controller sets the second pattern in a case where a supplying power duty is a first duty and sets the first pattern in a case where the supplying power duty is a second duty which is the supplying power duty larger or smaller by one step than the first duty, and performs wave number control."
Disclaimer: Curated by HT Syndication.
