Transformer assembling method, transformer, transformer-mounted substrate, power supply unit having transformer-mounted substrate, and recording apparatus including power supply unit

A recording apparatus having:

• a power supply unit including a components-mounted substrate on which a transformer is mounted, said power supply unit characterized in that:
• said components-mounted substrate is incorporated in a containing means including locking members for immobilizing and locking said components-mounted substrate in a direction parallel to the components-mounted surface of said components-mounted substrate, and a restraining member that when an impact load is applied in a direction substantially orthogonal to the components-mounted surface, allows said components-mounted substrate to be displaced and thus absorb an impact, and that restrains a displacement whose magnitude is equal to or larger than a given magnitude so as to disperse the load;
• and
• connecting means for making it possible to freely attach or detach said containing means to or from a power supply stowage of said recording apparatus and for mechanically and electrically connecting said containing means.

A power supply unit, comprising:

• a substrate for mounting components;
• containing means including locking members for immobilizing and locking said substrate in a direction parallel to a components mounted surface of said substrate;
• and
• a restraining member extending from said substrate that when an impact load is applied in a direction substantially orthogonal to said substrate surface, allows said substrate to be displaced and thus absorb an impact, and that restrains a displacement whose magnitude is equal to or larger than a given magnitude so as to disperse the load.