Staple cartridge in stapler

A staple cartridge detachably arranged in a body of a stapler, comprising:

• a cartridge body for accommodating a staple belt in which a plurality of rod-shaped staples are connected to each other and rolled into a roller-shape;
• a face plate for forming a driving passage for driving out the staples;
• and
• a guide member for guiding the staples at a time of forming leg portions of the staples and after forming the leg portions, wherein
• the staple belt, before forming leg portions, serves as a stopper which prevents the guide member from being removed from the cartridge body,
• the guide member is detachably engaged with the cartridge body, and
• the face plate is rotatably arranged so that the driving passage is opened to remove the guide member from the cartridge body.