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US 6,283,469 B1Granted
Device and method for providing a supply of single sheets of different thickness
AssigneeOce Printing Systems GmbH
InventorThomas Weber
Life of this patent
Estimating the term…
Abstract
A device and method for providing a supply of single sheets wherein each single sheet has a varying thickness. The present invention includes a stack of single sheets that are supported on a lifting platform. The lifting platform includes a compensation device for leveling the stack by compensating for the varying thickness of each single sheet.
Claims15
A device and a stack for providing a supply of single sheets, comprising:
- a plurality of single sheets forming a stack, each of said single sheets having a strip region and a non-strip region and a rectangular shape, said strip region having a strip region height and including a strip being attached to each of said single sheets, said strip extending along at least a portion of said sheet in a latitudinal direction, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- said stack having an upper and lower single sheet, said upper single sheet being removable from said stack in said latitudinal direction;
- a lifting platform contacting said stack, said lifting platform including:
- a compensation device for leveling said upper single sheet by positioning said strip region height below said non-strip region height, said compensation device having:
- a stationary plate and a movable plate, said stationary plate being positioned at said non-strip region, said movable plate being positioned at said strip region and a plurality of bearing legs rotatably mounted to support said movable plate;
- a lever device rotatably mounted so as to lift said movable plate of said lifting platform, said
- lever device including:
- a lever arm having a lever arm side,
- an eccentric disposed on said lever arm side, and
- a dog element connected to said bearing legs,
- said eccentric abutting against said dog element.
8 more elements
A device and a stack for providing a supply of single sheets, comprising:
- a plurality of single sheets forming a stack, each of said single sheets having a strip region and a non-strip region and a rectangular shape, said strip region having a strip region height and including a strip being attached to each of said single sheets, said strip extending along at least a portion of said sheet in a latitudinal direction, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- said stack having an upper and lower single sheet, said upper single sheet being removable from said stack in said latitudinal direction;
- a lifting platform contacting said stack, said lifting platform including:
- a compensation device for leveling said upper single sheet by positioning said strip region height below said non-strip region height, said compensation device having:
- a stationary plate and a movable plate, said stationary plate being positioned at said non-strip region, said movable plate being positioned at said strip region said movable plate including lamellae, said lamellae being movably interconnected and extending in said latitudinal direction;
- wherein said stack has a stack weight;
- and
- wherein a support element deflects said lamellae by pushing against said lamellae;
- said deflection of said lamellae varying with respect to said stack weight.
6 more elements
A device and a stack for providing a supply of single sheets, comprising:
- a plurality of single sheets forming a stack, each of said single sheets having a strip region and a non-strip region, said strip region having a strip region height and including a strip being attached to each of said single sheets, said strip extending along at least a portion of said sheet in a latitudinal direction said non-strip region having a non-strip region height and being without said strip, said strip region height being, greater than said non-strip region height;
- said stack having an upper and lower single sheet, said upper single sheet being removable from said stack in said latitudinal direction;
- a lifting platform contacting said stack, said lifting platform including:
- a compensation device for leveling said upper single sheet by positioning said strip region height below said non-strip region height, said compensation device having:
- a stationary plate and a movable plate, said stationary plate being positioned at said non-strip region, said movable plate being positioned at said strip region, and a plurality of bearing legs rotatably mounted to support said movable plate
- a lever device rotatably mounted so as to lift said movable plate of said lifting platform, said
- lever device including:
- a lever arm having a lever arm side,
- an eccentric disposed on said lever arm side, and
- a dog element connected to said bearing legs,
- said eccentric abutting, against said dog element.
8 more elements
A device and a stack for providing a supply of single sheets, comprising:
- a plurality of single sheets forming a stack, each of said single sheets having a strip region and a non-strip region, said strip region having a strip region height and including a strip being attached to each of said single sheets, said strip extending along at least a portion of said sheet in a latitudinal direction said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- said stack having an upper and lower single sheet, said upper single sheet being removable from said stack in said latitudinal direction;
- a lifting, platform contacting said stack, said lifting, platform including:
- a compensation device for leveling said upper single sheet by positioning said strip region height below said non-strip region height, said compensation device having:
- a stationary plate and a movable plate, said stationary plate being positioned at said non-strip region, said movable plate being positioned at said strip region, said movable plate including a lamellae, each of said lamellae being movably interconnected and extending in said latitudinal direction;
- wherein said stack has a stack weight, and
- wherein a support element deflects said lamellac by pushing against said lamellae, said deflection of said lamellae varying with respect to said stack weight.
4 more elements
A method for providing a supply of single sheets, comprising the steps of:
- forming a stack of a plurality of single sheets, each of said single sheets having a strip region and a non-strip region and a rectangular shape, said strip region having a strip region height and including a strip being attached to each of said single sheets extending along at least a portion of said sheet in a latitudinal direction, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- placing said stack on a lifting platform, said stack having an upper and lower single sheet, said lifting platform including a compensation device;
- leveling said stack with said compensation device by positioning said strip region height below said non-strip region height;
- removing said upper single sheet from said stack in a latitudinal direction;
- lifting said movable plate of said lifting platform by a lever device;
- pushing said lever device against a stationary detent with a lever arm of said lever device;
- providing a printing system, said printing system including said supply of said stack of single sheets and a lifting device and a paper dispensing device, said stack being positioned on said lifting device;
- said lifting device moving said stack in an upward direction by pushing said lever arm against said detent so as to automatically level said stack;
- and
- said leveled stack contacting said paper dispensing device mounted so as to remove said single sheets from said stack.
7 more elements
A method for providing a supply of single sheets, comprising the steps of:
- forming a stack of a plurality of single sheets, each of said single sheets having a strip region and a non-strip region and a rectangular shape, said strip region having a strip region height and including a strip being attached to each of said single sheets extending along at least a portion of said sheet in a latitudinal direction, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- placing said stack on a lifting platform, said stack having an upper and lower single sheet, said lifting platform including a compensation device;
- leveling said stack with said compensation device by positioning said strip region height below said non-strip region height;
- removing said upper single sheet from said stack in a latitudinal direction;
- lifting said movable plate of said lifting platform by a lever device;
- and
- pushing said lever device against a lamellae by a support element, said pushing varies with respect to a stack weight.
4 more elements
A method for providing a supply of single sheets, comprising the steps of:
- forming a stack of a plurality of said single sheets, each of said single sheets having a strip region and a non-strip region and a rectangular shape said strip region having a strip region height and including a strip being attached to each of said single sheets, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- placing said stack on a lifting platform, said stack having an upper and lower single sheet, said lifting platform including a compensation device;
- leveling said stack with said compensation device by positioning said strip region height below said non-strip region height;
- providing said lifting platform with a movable plate and a lifting device and lifting said movable plate with said lifting device;
- providing said lifting device with a dog element and an eccentric and bearing legs;
- and
- pushing against said dog element with said eccentric;
- wherein said dog element is connected to said bearing legs.
5 more elements
A method for providing a supply of single sheets, comprising the steps of:
- forming a stack of a plurality of said single sheets, each of said single sheets having a strip region and a non-strip region and a rectangular shape said strip region having a strip region height and including a strip being attached to each of said single sheets, said non-strip region having a non-strip region height and being without said strip, said strip region height being greater than said non-strip region height;
- placing said stack on a lifting platform, said stack having an upper and lower single sheet, said lifting platform including a compensation device;
- leveling said stack with said compensation device by positioning said strip region height below said non-strip region height;
- providing said lifting platform with a movable plate and a lifting device and lifting said movable plate with said lifting device;
- providing a stationary detent and a lever arm;
- and
- pushing said movable plate by pushing said lever arm against said stationary detent.
4 more elements
Dependencies are inferred from the claim text.