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US 10,897,576 B2Granted
Circuit board, electronic apparatus, and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorJun Hirabayashi
Life of this patent
Estimating the term…
Abstract
The electronic apparatus includes a first circuit board on which a circuit mounted, a second circuit board arranged close to the circuit on the first circuit board, and a conductive terminal, which is in contact with a ground pattern on the first circuit board, and is arranged at a location between the circuit and the second circuit board so as to extend over the circuit.
Claims19
An electronic apparatus, comprising:
- a first circuit board on which a first circuit to control the electronic apparatus is mounted, the first circuit board having a ground pattern and a conductive ground terminal connected to the ground pattern;
- and
- a second circuit board arranged close to the first circuit board, the second circuit board having a second circuit to supply power to the electronic apparatus,
- wherein the first circuit board and the second circuit board are arranged so that at least part of the first circuit on the first circuit board and at least part of the conductive ground terminal and at least a part of an area between the second circuit of the second circuit board and an input portion in which a voltage is input to the second circuit board, are overlapped when viewed from a direction perpendicular to the first circuit board and the second circuit board.
1 more element
An electronic apparatus, comprising:
- a first circuit board on which a first circuit to control the electronic apparatus is mounted on a first surface of the first circuit board, the first circuit board having a ground pattern and a conductive ground terminal connected to the ground pattern, the conductive ground terminal being arranged on a second surface of the first circuit board opposite the first surface;
- and
- a second circuit board arranged close to the first circuit board, the second circuit board having a second circuit to supply power to the electronic apparatus,
- wherein the first circuit on the first circuit board and the conductive ground terminal are arranged so that at least part of the first circuit on the first circuit board and at least part of the conductive ground terminal are overlapped when viewed from a direction perpendicular to the first circuit board, wherein the conductive ground terminal is arranged between the second surface of the first circuit board and the second circuit board, and
- wherein the first circuit on the first circuit board generates a radiation noise, and the conductive ground terminal reduces affection of the radiation noise to the second circuit of the second circuit board generated by the first circuit.
2 more elements
A circuit board which is mounted on an electronic apparatus, comprising:
- a circuit arranged on a first surface of the circuit board;
- a ground pattern;
- and
- a conductive ground terminal connected to the ground pattern and arranged on a second surface of the circuit board opposite the first surface,
- wherein the circuit board and another circuit board mounted on the electronic apparatus are arranged close to each other,
- wherein at least part of the another circuit board and at least part of a portion on the circuit are overlapped at an overlapped portion when viewed from a direction perpendicular to the another circuit board and the circuit board, the portion on the circuit board including electronic components mounted on the circuit,
- wherein the conductive ground terminal is arranged between the overlapped portion on the another circuit board and the circuit board, and
- wherein the circuit generates a radiation noise, and the conductive ground terminal reduces affection of the radiation noise to the another circuit board generated by the circuit.
5 more elements
An image forming apparatus comprising:
- an image forming unit for forming an image;
- a first circuit board on which a first circuit configured to operate for controlling the image forming unit is mounted, the first circuit board having a ground pattern and a conductive ground terminal connected to the ground pattern;
- and
- a second circuit board arranged close to the first circuit board, the second circuit board having a second circuit to supply power to the image forming apparatus,
- wherein the first circuit board and the second circuit board are arranged so that at least part of the first circuit on the first circuit board and at least part of the conductive ground terminal and at least part of an area between the second circuit of the second circuit board and an input portion in which a voltage is input to the second circuit board, are overlapped when viewed from a direction perpendicular to the first circuit board and the second circuit board.
2 more elements
An image forming apparatus, comprising:
- an image forming unit for forming an image;
- a first circuit board on which a first circuit configured to operate for controlling the image forming unit is mounted on a first surface of the first circuit board, the first circuit board having a ground pattern and a conductive ground terminal connected to the ground pattern, the conductive ground terminal being arranged on a second surface of the first circuit board opposite the first surface;
- and
- a second circuit board arranged close to the first circuit board, the second circuit board having a second circuit to supply power to the image forming apparatus,
- wherein the first circuit on the first circuit board and the conductive ground terminal are arranged so that at least part of the first circuit on the first circuit board and at least part of the conductive ground terminal are overlapped when viewed from a direction perpendicular to the first circuit board, wherein the conductive ground terminal is arranged between the second surface of the first circuit board and the second circuit board, and
- wherein the first circuit on the first circuit board generates a radiation noise, and the conductive ground terminal reduces affection of the radiation noise to the second circuit of the second circuit board generated by the first circuit.
3 more elements
Dependencies are inferred from the claim text.