Copying machine provided with means for selectively setting original base line

A copying machine capable of setting an original reference line which defines an area to be copied for a document placed at any position on the original placement surface of the machine, said copying machine comprising:

• an original table having an original placement surface on which a document is placed;
• optical means including a lens for projecting an image of said document placed on said original placement surface;
• means for visualizing said image;
• means for determining an original reference line on the original placement surface, wherein said reference determining means comprises a movable reference indicator for setting an original reference line;
• and
• means for controlling the position of the optical lens in such a manner that, depending upon the amount of movement of said indicator, said optical lens may be shifted in the same direction as the movement of said indicator and normal to the optical axis of said lens by a predetermined distance.

A copying machine capable of selectively setting an area to be copied for a document placed on the original placement surface of the machine, said copying machine comprising:

• an original table having an original placement surface on which a document is placed;
• optical means including a lens for projecting the image of the document placed on said original placement surface onto a photosensitive member;
• means for visualizing the image on said photosensitive member;
• means for determining the copy area of the document;
• a light source for irradiating said photosensitive member with light during the formation of an electrostatic latent image between initial charging to development in order to control the area in which the latent image is formed;
• an opaque means for screening the light from said light source to prevent it from irradiating said photosensitive member;
• means for controlling the width of light irradiation measured in the direction normal to the moving direction of said photosensitive member in accordance with the position of said copy area determining means;
• and
• means for causing said masking means to move across the light path from said light source in relation to movement of said photosensitive member in accordance with the position of said determining means so as to control the forming length of the latent image in the direction of said photosensitive member.