Photocopying apparatus

Claim 2

A copying apparatus comprising a housing, a table having a plane surface for supporting an original provided on top of said housing, a first mirror disposed with respect to said original placed on said table, a second and a third mirror and a lens for directing the original image reflected from said first mirror to a moving photosensitive medium, said second mirror being moved with said first mirror as the latter is moved in parallel relationship to the surface of said original to scan such surface while at least three mirrors including said first and second mirrors are rotated about their own axes respectively with the optical paths between their respective points of reflection being maintained at predetermined lengths by a linkage, whereby the original imaGe is projected for copying on said moving photosensitive medium through said lens.

Claim 3

A copying apparatus comprising a housing, an original supporting table provided on top of said housing, a movable member adapted to reciprocate below and in parallel relationship to an original placed on said table, first mirror means journalled to said movable member in such a manner that the point of reflection (B) of said first mirror means is located at a predetermined vertical distance from said original, said first mirror means having an angle bisecting mechanism adapted to ensure said first mirror to be always perpendicular to a line bisecting the sum of the angles of incidence and reflection of the original image on said first mirror means, second mirror means having a point of reflection (C) located at a predetermined distance from said point of reflection (B) of said first mirror means, said points of reflection (B,C) being connected together by means of pivot pins, said second mirror means having an angle bisecting mechanism, third mirror means having a point of reflection (D) located at a predetermined distance from said point of reflection (C) of said second mirror means, said points of reflection (C, D) being connected together by means of pivot pins, said third mirror means having an angle bisecting mechanism, said pivot pins at said point of reflection (D) being journalled to stationary members, a lens, and a fourth mirror, whereby the original image is projected for copying on a photosensitive medium.

Claim 4

A copying apparatus comprising a housing, an original supporting table provided on top of said housing, a movable member adapted to reciprocate below and in parallel relationship to an original placed on said table, first mirror means journalled to said movable member in such a manner that the point of reflection (B) of said first mirror means is located at a predetermined vertical distance from said original, said first mirror means having an angle bisecting mechanism adapted to ensure said first mirror to be always perpendicular to a line bisecting the sum of the angles of incidence and reflection of the original image on said first mirror means, second mirror means having a point of reflection (C) located at a predetermined distance from said point of reflection (B) of said first mirror means, said points of reflection (B,C) being connected together by means of pivot pins, said second mirror means having an angle bisecting mechanism, third mirror means having a point of reflection (D) located at a predetermined distance from said point of reflection (C) of said second mirror means, said points of reflection (C, D) being connected together by means of pivot pins, said third mirror means having an angle bisecting mechanism, said pivot pins at said point of reflection (D) being journalled to stationary members, a lens, and a fourth mirror, whereby the original image is projected for copying on a photosensitive medium.

Claim 5

A copying apparatus according to claim 2, wherein said fourth mirror comprise a unitary in-mirror lens.

Claim 6

A copying apparatus according to claim 2, wherein each of said angle bisecting mechanisms comprises a guide rod formed with a slot oriented perpendicularly to the reflective surface of the respective mirror, and a set of links having an equal length, one end of each link being connected to a pin received in said slot, the other ends of said links being connected to said pivot pins or said support members at proper locations thereof.