Abstract: A toner cartridge includes: a toner storing unit configured to store a toner; and an agitation paddle configured to rotate a spiral section, which extends in a spiral shape with a rotation axis as a spiral center, in the toner storing unit with the rotation axis as a rotation center to thereby agitate the toner in the toner storing unit.

Abstract: According to the present invention, an upper body which is relatively light in weight is connected to a lower body which contains a paper conveying path and a transfer portion disposed in the paper conveying path, and support portions formed in the lower body are brought into abutment with an image forming portion comprising an image carrier unit and a developing unit, the image carrier unit having an image carrier, and in this state the image forming portion is fixed by a retaining device.

Abstract: A composite, lightsafe masking film is disclosed which comprises a substrate formed of a plastic material, and a lightsafe layer peelably provided over the surface of said substrate. A fluorescent substance is incorporated into the lightsafe layer, or a fluorescent substance-containing layer is provided on the surface of the lightsafe layer or between the lightsafe layer and the substrate, so that a cutting line formed on the lightsafe layer fluoresces under illuminated conditions to form a legible pattern.

Abstract: A ribbon shifting device has a cassette holder for holding a multicolor ribbon cassette, which is moved in a predetermined direction by a cam. The cam is driven by a driving means through a gear train consisting of at least two gears. When the cassette holder is located at the home position, a recess formed in one of the meshing gear is brought opposite to the other gear, so that the gears are disengaged, and then an urging means urges the cam in a direction to bring the gears into engagement. Thus, the adjustment of the home position of the cassette holder is achieved simultaneously, accurately and easily.