US3778147A — Electrostatic reproduction machine having selecta…

Claim 1

Independent Claim 199 words

In an electrostatic reproduction machine wherein copies of an original document are produced on copy sheets by generating a light image of the original document on a photoreceptor and developing said image, the image receiving surface of said photoreceptor being disposed in a predetermined image plane, said copies exhibiting selectable magnification ratios with respect to said original document, said machine including apparatus for regulating said magnification ratios, comprising: bi-directionally movable lens means for projecting a light image of said original document onto said image plane, said lens means being movable along a path to determine the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said image plane; selecting means for producing electrical representations of selected magnification ratios when energized, means coupled to said selecting means for positioning said lens means at a selected location along said path in accordance with said produced electrical representations, and means responsive to said selecting means adapted on selection of a predetermined magnification ratio to effect preset displacement of the image produced on said photo-receptor whereby to enhance alignment of the image on said sheet in accommodation of the change in image size.

Claim 2

Dependent Claim 199 words

In an electrostatic reproduction machine wherein copies of an original document are produced on copy sheets by generating a light image of the original document on a photoreceptor and developing said image, the image receiving surface of said photoreceptor being disposed in a predetermined image plane, said copies exhibiting selectable magnification ratios with respect to said original document, said machine including apparatus for regulating said magnification ratios, comprising: bi-directionally movable lens means for projecting a light image of said original document onto said image plane, said lens means being movable along a path to determine the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said image plane; selecting means for producing electrical representations of selected magnification ratios when energized, means coupled to said selecting means for positioning said lens means at a selected location along said path in accordance with said produced electrical representations, and means responsive to said selecting means adapted on selection of a predetermined magnification ratio to effect preset displacement of the image produced on said photo-receptor whereby to enhance alignment of the image on said sheet in accommodation of the change in image size.

Claim 3

Dependent Claim 239 words

In an electrostatic reproduction machine wherein copies of an original document are produced, said copies exhibiting selectable magnification ratios with respect to said original document, apparatus for regulating said magnification ratios, comprising: bi-directionally movable lens means for projecting a light image of said original document onto an image plane, said lens means being movable along a rectilinear path to determine the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said image plane; manually operable selecting means for producing electrical representations of selected magnification ratios when energized, and means coupled to said manually operable selecting means for positioning said lens means at a selected location along said rectilinear path in accordance with said produced electrical representations, said means for positioning saiD lens means including: a reversible electric motor mechanically coupled to said lens means for imparting a motive force thereto sufficient to move said lens means along said rectilinear path; sensing means included in said lens means for sensing the position of said lens means as said lens means moves along said rectilinear path and for generating sensing signals representative of said position; and means coupled to said sensing means for arresting the movement of said lens means when said sensing signals correspond to said produced electrical representations such that the magnification ratio determined by the position represented by said sensing signals is identical to said selected magnification ratio.

Claim 4

Dependent Claim 239 words

In an electrostatic reproduction machine wherein copies of an original document are produced, said copies exhibiting selectable magnification ratios with respect to said original document, apparatus for regulating said magnification ratios, comprising: bi-directionally movable lens means for projecting a light image of said original document onto an image plane, said lens means being movable along a rectilinear path to determine the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said image plane; manually operable selecting means for producing electrical representations of selected magnification ratios when energized, and means coupled to said manually operable selecting means for positioning said lens means at a selected location along said rectilinear path in accordance with said produced electrical representations, said means for positioning saiD lens means including: a reversible electric motor mechanically coupled to said lens means for imparting a motive force thereto sufficient to move said lens means along said rectilinear path; sensing means included in said lens means for sensing the position of said lens means as said lens means moves along said rectilinear path and for generating sensing signals representative of said position; and means coupled to said sensing means for arresting the movement of said lens means when said sensing signals correspond to said produced electrical representations such that the magnification ratio determined by the position represented by said sensing signals is identical to said selected magnification ratio.

Claim 5

Dependent Claim 145 words

The apparatus of claim 2 wherein said means for arresting the movement of said lens means comprises: comparison means for comparing said sensing signals with said produced electrical representations; direction determining means coupled to said comparison means for driving said electric motor in a first direction when said sensing signals represent that the position of said lens means is to one side of the selected position corresponding to said selected magnification ratio and for driving said electric motor in a second direction when said sensing signals represent that the position of said lens means is to the other side of the selected position corresponding to said selected magnification ratio; and position detection means coupled to said comparison means and said direction determining means for halting said lens means at said selected position when said lens means approaches said selected position from said other side thereof.

Claim 6

Dependent Claim 84 words

The apparatus of claim 3 wherein said comparison means comprises arithmetic means for producing a first signal when said sensing signals and said electrical representations are equal, a second signal when said sensing signals and said electrical representations are not equal and said lens means is positioned to said one side of said selected position, and a third signal when said sensing signals and said electrical representations are not equal and said lens means is positioned to said other side of said selected position.

Claim 7

Dependent Claim 72 words

The apparatus of claim 4 wherein said direction determining means comprises: direction store means coupled to said arithmetic means for selectively storing said second and third signals, and means coupled to said direction store means for supplying said electric motor with energy admitting of a first sense when said second signal is stored and for supplying said electric motor with energy admitting of an opposite sense when said third signal is stored.

Claim 8

Dependent Claim 113 words

The apparatus of claim 5 wherein said position detection means comprises: coincidence means coupled to said arithmetic means and said direction store means for producing an inhibit signal in response to said first signal and said stored third signal; and electromechanical means coupled to said coincidence means for interposing an obstacle into the rectilinear path of said lens means in response to said inhibit signal and for removing said obstacle from said rectilinear path of said lens means in the absence of said inhibit signal; whereby said lens means overruns said selected position when said selected position is approached from said one side, thereby returning to said selected position from said other side.

Claim 9

Dependent Claim 51 words

The apparatus of claim 6 further including time delay means coupled to said direction store means for temporarily preventing said direction store means from selectively storing said second and third signals until said obstacle is removed from said rectilinear path of said lens means when a subsequent magnification ratio is selected.

Claim 10

Dependent Claim 55 words

The apparatus of claim 6 wherein said manually operable selecting means comprises: manual switch means for selectively producing switch signals upon the selected energization thereof, each said switch signal representing a selected magnification ratio; and cOding means coupled to said manual switch means for producing a unique coded electrical representation for each said switch signal.

Claim 11

Dependent Claim 59 words

The apparatus of claim 8 wherein said coding means comprises: code store means for storing each of said coded electrical representations and for supplying said stored coded electrical representations to said arithmetic means; and gating means coupled to said manual switch means and responsive to said switch signals for supplying said coded electrical representations to said code store means.

Claim 12

Dependent Claim 47 words

The apparatus of claim 9 further including detecting means coupled to said code means for detecting a predetermined stored coded electrical representation to drive said lens means directly to the position represented by said predetermined stored coded electrical representation such that said selected magnification ratio is determined.

Claim 13

Dependent Claim 69 words

The apparatus of claim 10 wherein said detecting means includes: means for supplying said electric motor with energy admitting of said first sense to thereby drive said electric motor in said first direction in response to said detected predetermined stored coded electrical representation; and means responsive to said detected predetermined stored electrical representation for activating said coincidence means to produce said inhibit signal in response to said first signal.

Claim 14

Dependent Claim 184 words

In an electrostatic reproduction machine wherein copies of an original document are produced by flashing a pulsed light image thereof onto a photoreceptor disposed in an image plane in timed relation with the movement of said photoreceptor, said copies exhibiting selectable magnification ratios with respect to said original document, apparatus for regulating said magnification ratios, including: selectively movable lens means for projecting a pulsed light image of said original document onto said photoreceptor, said lens means determining the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said photoreceptor; means for producing a flash energizing pulse; manually operable selecting means for producing electrical representations of selected magnification ratios to selectively position said lens means; and flash control means coupled to said producing means and said selecting means for applying said flash energizing pulse to illumination means to generate a light pulse, said flash control means being responsive to a preselected one of said selected magnification ratios for delaying the application of said flash energizing pulse to said illumination means for a predetermined time duration.

Claim 15

Dependent Claim 184 words

In an electrostatic reproduction machine wherein copies of an original document are produced by flashing a pulsed light image thereof onto a photoreceptor disposed in an image plane in timed relation with the movement of said photoreceptor, said copies exhibiting selectable magnification ratios with respect to said original document, apparatus for regulating said magnification ratios, including: selectively movable lens means for projecting a pulsed light image of said original document onto said photoreceptor, said lens means determining the magnification ratio in accordance with the relative position of said lens means with respect to said original document and said photoreceptor; means for producing a flash energizing pulse; manually operable selecting means for producing electrical representations of selected magnification ratios to selectively position said lens means; and flash control means coupled to said producing means and said selecting means for applying said flash energizing pulse to illumination means to generate a light pulse, said flash control means being responsive to a preselected one of said selected magnification ratios for delaying the application of said flash energizing pulse to said illumination means for a predetermined time duration.

Claim 16

Dependent Claim 122 words

The apparatus of claim 12 wherein said flash control means comprises: gating means coupled to said producing means for applying said flash energizing pulse to said illumination means, said gating means including a disabling input for disabling the operation thereof in response to an electrical representation applied to said disabling input; delayed gating means coupled to said producing means for applying a time delayed flash energizing pulse to said illumination means, said delayed gating means including an enabling input for enabling the operation thereof in response to an electrical representation applied to said enabling input; and means for applying a preselected one of said electrical representations produced by said manually operable selecting means to said disabling input and to said enabling input.

Claim 17

Dependent Claim 115 words

The apparatus of claim 13 wherein said delayed gating means comprises: time delay means having an input terminal coupled to said producing means for generating an output signal at said predetermined time subsequent to the production of said flash energizing pulse; and coincidence means including a first input terminal coupled to said time delay means for receiving said output signal, a second input terminal coupled to said producing means for receiving said flash energizing pulse and an enabling terminal for receiving said preselected one of said electrical representations, whereby said time delayed flash energizing pulse is generated in response to said output signal, said flash energizing pulse and said preselected one of said electrical representations.

Claim 18

Dependent Claim 42 words

The apparatus of claim 14 wherein said flash control means further includes selective gating means coupled to said gating means and said coincidence means for selectively applying said flash energizing pulse and said time delayed flash energizing pulse to said illumination means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-12-10	1977-06-11	1977-12-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-12-10	1981-06-11	1981-12-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-12-10	1985-06-11	1985-12-11	$7700.00	Window Closed / Lapsed

Electrostatic reproduction machine having selectable magnification ratios

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