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US 2006/0067738 A1Published application
Image forming apparatus capable of stable wireless communication
AssigneeKonica Minolta Business Technologies, Inc.
InventorsKoji Ohara, Takeshi Nomura, Fumio Maekawa, Kunio Furukawa
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Abstract
In an image forming operation, communication with a non-contact type data storage circuit is established by a communication signal of a first percentage modulation, and when not in an image forming operation, communication with a non-contact type data storage circuit is established by a communication signal of a second percentage modulation smaller than the first percentage modulation.
Claims10
An image forming apparatus, comprising:
- a unit moving in response to an image forming operation for forming an image;
- a non-contact type data storage circuit provided corresponding to said unit and moving with said unit;
- and
- a communication control portion communicating with said non-contact type data storage circuit and controlling data-access to said non-contact type data storage circuit;
- wherein
- said communication control portion communicates with said non-contact type data storage circuit with a communication signal having a first percentage modulation during an image forming operation, and communicates with said non-contact type data storage circuit with a communication signal having a second percentage modulation smaller than said first percentage modulation not during the image forming operation, so as to attain data-access to said non-contact type data storage circuit.
3 more elements
An image forming apparatus, comprising:
- a unit moving in response to an image forming operation for forming an image;
- a non-contact type data storage circuit provided corresponding to said unit and moving with said unit;
- a communication control portion communicating with said non-contact type data storage circuit and controlling data-access to said non-contact type data storage circuit;
- and
- a high-voltage supplying portion supplying a high-voltage for forming an image to said unit;
- wherein
- said communication control portion communicates with said non-contact type data storage circuit by a communication signal of a first percentage modulation when said high-voltage supplying portion is supplying a high-voltage to said unit, and communicates with said non-contact type data storage circuit by a communication signal of a second percentage modulation smaller than said first percentage modulation when said high-voltage supplying portion does not supply any high-voltage to the unit, so as to attain data-access to said non-contact type data storage circuit.
4 more elements
An image forming apparatus comprising:
- a developing apparatus including a plurality of developing units corresponding to a plurality of colors for forming a color image respectively, and moving each of said developing units for successively stopping each of said developing units at a prescribed image forming position;
- a non-contact type IC memory provided corresponding to each said developing unit and moving with the movement of said developing unit;
- a high-voltage supplying portion supplying a high-voltage for development to a stopped developing unit that is the developing unit stopped at the image forming position, when any of said plurality of developing units is stopped at said image forming position;
- a communication portion provided to be close to said non-contact type IC memory provided corresponding to the stopped developing unit;
- and
- a communication control portion controlling communication such that when a high-voltage is being applied by said high-voltage supplying portion to the stopped developing unit, communication with said non-contact IC memory is established by a communication signal of a first percentage modulation using said communication portion and when a high-voltage is not being applied by said high-voltage supplying portion to the stopped developing unit, communication with said non-contact IC memory is established by a communication signal of a second percentage modulation smaller than said first percentage modulation, using said communication portion.
3 more elements
Dependencies are inferred from the claim text.