Copying machine having a capability of reproducing images at different magnifications

Claim 2

A copying machine with a photoreceptor having a capability of reproducing an image from an orignal at different magnifications on copying paper, which machine comprises, in combination: a document feeder for supplying the originals onto a predetermined position relative to the photoreceptor; a first means for detecting the size of each original when said document feeder supplies the original onto the predetermined position; a plurality of paper loading units; a second means for detecting the size of copying papers loaded on each of the loading units; a selector meaas for selecting one of the copying papers loaded on the respective loading units; first and second storage means for storing of a numerical figure having a predetermined number of digits; a mode selector means for selecting one of a first and second operating mode in which the machine operates; a magnification control means for controlling at least the magnification at which the image is projected onto the photoreceptor in dependence on the numerical figure stored in the first or second storage means, and a control means for causing the first storage means to be associated selectively with magnification control means when the first operating mode is selected by the mode selector means and for, when the second operating mode is selected by the mode selector means, calculating the magnification from the size of the original detected by the first detecting means and also the size of the copying paper selected by the selector means and detected by the second detecting means, and also for causing the second storage means to store a value obtained by the calculation while the second storage means is selectively associated with the magnification control means.

Claim 3

A machine as claimed in claim 1 wherein said control means includes a regulating means for causing the value within a predetermined range of preset values to be stored in the second storage means such that, when the result of the calculation of the magnification is not within the predetermined range during the second operating mode, the second operating mode can be automatically released.

Claim 4

A machine as claimed in claim 1, further comprising a start manipulating means for starting a copying operation, and operable to start the copying operation when the start manipulation is effected during the second operating mode and after a process to store the numerical figure in the second storage means has been completed.

Claim 5

A machine as claimed in claim 2, further comprising a start manipulating means for starting a copying operation, and operable to start the copying operation when the start manipulation is effected during the second operating mode and after a process to store the numerical figure in the second storage means has been completed.

Claim 6

A copying machine with a photoreceptor having a capability of reproducing an image from an original at different magnifications on copying paper, which machine comprises, in combination: a document feeder for supplying the originals onto a predetermined position relative to the photoreceptor; a first means for detecting the size of each original when said document feeder supplies the original onto the predetermined position; a plurality of paper loading units; a second means for detecting the size of copying papers loaded on each of the loading units; a selector means for selecting one of the copying papers loaded on the respective loading units: storage means for storing of a numerical figure representative of a magnification ratio of the original image having a predetermined number of digits; a mode selector means for selecting one of a first and second operating mode in which the copying machine operates; a magnification control means for controlling at least the magnification at which the image is projected onto the photoreceptor in dependence on the numerical figure stored in the storage means, and a control means for causing the storage means to be associated selectively with the magnification control means when the first operating mode is selected by the mode selector means and for, when the second operating mode is selected by the mode selector means, calculating the magnification from the size of the original detected by the first detecting means and also the size of the copying paper selected by the selector means and detected by the second detecting means, also for causing the storage means to store a value obtained by the calculation while the storage means is selectively associated with the magnification control means.

Claim 7

A copying machine with a photoreceptor having a capability of reproducing an image from an original at different magnifications on copying paper, which machine comprises, in combination: a document feeder for supplying the originals onto a predetermined position relative to the photoreceptor; a first means for detecting the size of each original when said document feeder supplies the original onto the predetermined position; a plurality of paper loading units; a second means for detecting the size of copying papers loaded on each of the loading units; a selector means for selecting one of the copying papers loaded on the respective loading units: storage means for storing of a numerical figure representative of a magnification ratio of the original image having a predetermined number of digits; a mode selector means for selecting one of a first and second operating mode in which the copying machine operates; a magnification control means for controlling at least the magnification at which the image is projected onto the photoreceptor in dependence on the numerical figure stored in the storage means, and a control means for causing the storage means to be associated selectively with the magnification control means when the first operating mode is selected by the mode selector means and for, when the second operating mode is selected by the mode selector means, calculating the magnification from the size of the original detected by the first detecting means and also the size of the copying paper selected by the selector means and detected by the second detecting means, also for causing the storage means to store a value obtained by the calculation while the storage means is selectively associated with the magnification control means.

Claim 8

A machine as claimed in claim 5 wherein said control means includes a regulating means for causing a value within a predetermined range of preset values to be stored in the storage means such that, when the result of the calculation of the magnification is not within the predetermined range during the second operating mode, the second operating mode can be automatically released.

Claim 9

A machine as claimed in claim 5, further comprising a start manipulating means for starting a copying operation, during the second operating mode and after a process to store the numerical figure in the second storage means has been completed.