| 摘要 |
PROBLEM TO BE SOLVED: To display many functions with simple works by providing an opening/ closing member openably and closably closing the opening part provided in the body cover opposite to a shassis door to enable easily changing the pricipal part of an electric circuit substrate while securing a shielding performance. SOLUTION: A spare board 22-3 being the printed board and the IC, etc., made extensible by the selection of a user is mounted on a controller substrate 22-2 as necessary in the case the user requires multiple functions to a printer. Then, an opening part 32-1 slightly larger than the spare board 22-3 is provided in a chassis cover 32. The opening part 32-1 is closed by a chassis door 33. That is, one end 33-1 of the chassis door 33 is fitted to a hole 32-2 for positioning chassis 30 and moreover a leaf spring 33-2 is fitted to the bent part 32-3 provided on the periphery of the opening part 32-1 of the chassis cover 32. |
