Microfilm and microfilm printer

A microfilm printer adapted for use with a microfilm comprising a film base, a plurality of microimages defining film frames continuously formed on the film base, each of the microimages being provided at a periphery thereof on the film base with a size indication means which has a distinctiveness for indicating the size of the corresponding microimage;

• said printer comprising:
• means for enlarging and projecting said microimages of the microfilm on a photo-sensitive media, means for transferring the enlarged images on the photo-sensitive media to copying sheets, means for detecting said size indication means;
• means for controlling a sheet supplying signal in accordance with a signal from the detecting means;
• and means for selectively supplying the copying sheets on the basis of said sheet supplying signal from said controlling means.

A microfilm printer adapted for use with a roll film type microfilm comprising, a roll film base, a series of microimages defining film frames continuously formed on the film base in the longitudinal direction, said roll film being provided with blip marks arranged along one of the sides of the roll film in the longitudinal direction and size indication means arranged along the other side of the roll film in the longitudinal direction, said size indication means having a distinctiveness for indicating the size of the corresponding microimages;

• said printer comprising:
• means for enlarging and projecting said microimages of the microfilm on a photo-sensitive media, means for transferring the enlarged images on the photo-sensitive media to copying sheets, means for detecting said size indication means;
• means for controlling a sheet supplying signal in accordance with a signal from the detecting means;
• means for selectively supplying the copying sheets on the basis of said sheet supplying signal from said controlling means, and means for detecting said blip marks to retrieve the frames of said microimages.

A microfilm printer adapted for use with a microfilm comprising a film base, a plurality of microimages defining film frames continuously formed on the film base, each of the microimages being provided at a periphery thereof on the film base with a size indication mark which has a distinctiveness for indicating the size of the corresponding microimage, said size indication mark consisting of a single mark area which also serves as a blip mark;

• said printer comprising:
• means for enlarging and projecting said microimages of the microfilm on a photo-sensitive media, means for transferring the enlarged images on the photo-sensitive media to copying sheets, means for detecting said size indication marks;
• means for controlling a sheet supplying signal in accordance with a signal from the mark detecting means;
• means for selectively supplying the copying sheets on the basis of said sheet supplying signal from said controlling means, and means for retrieving the frames of said microimages also by detecting said size indication marks.