摘要:
A copying machine including an openable original cover, an original holder (11) movably provided on the top of the main body of the copying machine, a locking mechanism (27) provided in the main body of the copying machine and having a projectable lock lever (26) for restricting the movement of the original holder by engaging the receiving parts of the original holder when the original holder is located at a predetermined position, and an ON-OFF detection mechanism (126) for elevating the rock lever a predetermined amount in accordance with the opening and shutting movement of the original cover when the original holder is located at the predetermined postion and actuating a switch (38) for driving the detecting means of the original size.
摘要:
A copying machine including an openable original cover, an original holder (11) movably provided on the top of the main body of the copying machine, a locking mechanism (27) provided in the main body of the copying machine and having a projectable lock lever (26) for restricting the movement of the original holder by engaging the receiving parts of the original holder when the original holder is located at a predetermined position, and an ON-OFF detection mechanism (126) for elevating the rock lever a predetermined amount in accordance with the opening and shutting movement of the original cover when the original holder is located at the predetermined postion and actuating a switch (38) for driving the detecting means of the original size.
- a transparent plate -on which to place a document to be copied, - an optical system - for projecting the image of the document onto an electrostatographic photosensitive member in an exposure zone located along the moving path of the photosensitive member, and -a driving means - for reciprocating one of at least a part of the optical system and the transparent plate is characterized in that -said driving means includes - a backward movement restricting means - for stopping the backward movement of said one of at least a part of the optical system and the transparent plate fully accurately at a predetermined forward movement start position.
摘要:
A cleaning device in an electrostatic copying apparatus for removing residual toner particles from the surface of a photosensitive member adapted to move through an endless conveying passage, which comprises a blade holding mechanism (52, 54) mounted pivotally around an axis (48) extending substantially parallel to the surface of the photosensitive member (30) and substantially perpendicular to the moving direction of the photosensitive member and a cleaning blade (56) mounted on the blade holding mechanism. This cleaning device (56) further includes a first spring means (70) for elastically biasing the blade holding mechanism to a non-operating position at which the cleaning blade (56) moves away from the surface of the photosensitive member (30) and a specially improved operating mechanism for selectively positioning the blade holding mechanism against the elastic biasing action of the first spring means (70) at an operating position at which the cleaning blade (56) is pressed on the surface of the photosensitive member (30).
摘要:
An optical device in a variable magnification electrostatic copying apparatus. The optical device comprises a first reflecting mirror assembly mounted for reciprocal movement, a second reflecting mirror assembly mounted for reciprocal movement substantially parallel to the reciprocating direction of the first reflecting mirror assembly, and a speed-reduction interlocking mechanism for moving the second reflecting mirror assembly at a speed one-second of the moving speed of the first reflecting mirror assembly according to the movement of the first reflecting mirror assembly. The optical device further includes a magnification setting mechanism for changing the relative position of the second reflecting mirror assembly to the first reflecting mirror assembly according to a magnification of copying. The magnification setting mechanism comprises a setting cam having a plurality of acting portions corresponding to a plurality of magnification values and a setting member adapted to be held by the setting cam at any one of a plurality of setting positions corresponding to the plurality of magnification values. The changing of the position of the setting member causes a change in the relative position of the second reflecting mirror assembly to the first reflecting mirror assembly.