Printed circuit board and printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYo Kobayashi, Koji Hirai
Life of this patent
Estimating the term…
Abstract
A printed circuit board includes a front layer including frame ground regions on which connectors to be connected with external apparatuses or communication cables are mounted and which are connected with a ground, a signal ground region which is separated from the frame ground regions at the front layer, on which electronic devices configured to receive signals from the connectors are mounted, and which is connected with a ground, and a static electricity removal ground region separated from the frame ground regions and the signal ground region at the front layer, situated outside the frame ground regions, and connected with a ground.
Claims17
A printing apparatus comprising:
- a printing unit configured to print an image on a sheet;
- a metallic housing to fix a printed circuit board;
- and
- the printed circuit board comprising a first region, a second region and a connector, wherein
- on a front layer of the printed circuit board, the connector is mounted in the second region, and the first region and the second region are electrically insulated,
- the first region and the second region are connected with a ground of the printed circuit board,
- the first region is at a position that is on an extension of an opening direction of an insertion opening of the connector and corresponds to a peripheral portion of the front layer of the printed circuit board,
- a hand of a worker approaches the first region when inserting a cable into the connector,
- the first region includes a hole or a notch through which a metallic fixing member for fixing the printed circuit board is passed, and
- the metallic fixing member is to fix the printed circuit board to the metallic housing.
Dependencies are inferred from the claim text.