Control device for use in copying machines

Claim 2

A copying machine having a roll of copying papers selfcontained therein, characterized by that the said machine is provided with a control device which comprises a micro-switch having an actuator being in contact with the copying paper withdrawn from the said roll at such a position of the paper conveying passage that it is directly affected by the condition of copying paper wound around the reel, the said micro-switch being a part of the control circuit by which the copying machine is permitted to complete at least the single copying copying cycle underway at the time of actuation of said micro-switch.

Claim 3

A copying machine having a roll of copying papers self-contained therein, characterized by that the said machine is provided with a control device which comprises a micro-switch having an actuator being in contact with the copying paper withdrawn from the said roll at such a position of the paper conveying passage that it is directly affected by the condition of copying paper wound around the reel, the said micro-switch being a part of the control circuit by which the copying machine is permitted to complete at least the single copying cycle underway at the time of actuation of said micro-switch, the said control circuit being provided with a warning device for indicating the exhaust of the copying paper by the actuation of the said micro-switch.

Claim 4

A copying machine having a roll of copying papers self-contained therein, characterized by that the said machine is provided with a control device which comprises a micro-switch having an actuator being in contact with the copying paper withdrawn from the said roll at such a position of the paper conveying passage that it is directly affected by the condition of copying paper wound around the reel, the said micro-switch being a part of the control circuit by which the copying machine is permitted to complete at least the single copying cycle underway at the time of actuation of said micro-switch, the said control circuit being provided with a warning device for indicating the exhaust of the copying paper by the actuation of the said micro-switch.

Claim 5

A copying machine comprising a paper carrying roll, the end of the paper being slidable on said roll when a predetermined amount of paper has been removed therefrom, a micro-switch mounted adjacent said paper said micro-switch having an actuator mounted thereon for contacting the underside of said paper said actuator being movable from a first position defined by the paper before the paper has begun to slide on said roll in which the micro-switch is closed and a second position defined by the paper after it has begun to slide on said roll in which the micro-switch is opened by said actuator, a single roller positioned before said paper carrying roll such that the paper is permitted to slacken in the region of said actuator as the paper nears complete removal from said roll, a control circuit connected to said micro-switch, said control circuit being energized to permit the copying machine to operate when said actuator is in said first position and to de-energize the control circuit when said actuator is in the second position, means in said control for permitting the copying machine to complete at least the single copying cycle being carried out when said control circuit is de-energized, a pair or pressure rollers positioned after said actuator, a means for cutting said paper positioned after said pressure rollers, and means for copying positioned after said cutting means all of said elements being aligned on substantially the same horizontal line such that smooth transfer of copying paper is facilitated.

Claim 6

A copying machine comprising a paper carrying roll, the end of the paper being slidable on said roll when a predetermined amount of paper has been removed therefrom, a micro-switch mounted adjacent said paper said micro-switch having an actuator mounted thereon for contacting the underside of said paper said actuator being movable from a first position defined by the paper before the paper has begun to slide on said roll in which the micro-switch is closed and a second position defined by the paper after it has begun to slide on said roll in which the micro-switch is opened by said actuator, a single roller positioned before said paper carrying roll such that the paper is permitted to slacken in the region of said actuator as the paper nears complete removal from said roll, a control circuit connected to said micro-switch, said control circuit being energized to permit the copying machine to operate when said actuator is in said first position and to de-energize the control circuit when said actuator is in the second position, means in said control for permitting the copying machine to complete at least the single copying cycle being carried out when said control circuit is de-energized, a pair or pressure rollers positioned after said actuator, a means for cutting said paper positioned after said pressure rollers, and means for copying positioned after said cutting means all of said elements being aligned on substantially the same horizontal line such that smooth transfer of copying paper is facilitated.

Claim 7

The copying machine specified in claim 3 further comprising means for providing a warning signal when said paper begins to slide on said roll, the warning signal means being connected in said control circuit, and means For energizing said warning signal means when said actuator is moved to said second position.

Claim 8

The copying machine specified in claim 3 wherein the means for permitting completion of at least the single copying cycle comprises a keep relay.

Claim 9

In a copying machine having a roll of copy paper thereon, which paper is fed into said copying machine, the improvement comprising means for permitting slack to occur in said paper as it is moved between said roll and said copying machine when the paper nears the end of the roll, means for detecting the occurrence of slack in said paper, a normally energized control circuit connected to said slack detecting means, said control circuit being deenergized by said slack detecting means upon the occurence of slack in said paper, and means for permitting completion of at least the copying cycle the machine is in when the said control circuit is deenergized.

Claim 10

In a copying machine having a roll of copy paper thereon, which paper is fed into said copying machine, the improvement comprising means for permitting slack to occur in said paper as it is moved between said roll and said copying machine when the paper nears the end of the roll, means for detecting the occurrence of slack in said paper, a normally energized control circuit connected to said slack detecting means, said control circuit being deenergized by said slack detecting means upon the occurence of slack in said paper, and means for permitting completion of at least the copying cycle the machine is in when the said control circuit is deenergized.