Core driving method for printer web medium supply

Inactive Publication Date: 2012-08-02
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]Methods for operating a printer web medium supply are provided in one aspect of the method. An input force is received and the input force is distributed to supply first force at a first end of a core having a web wo

Problems solved by technology

Typically, the large amount of web medium that can be stored on a core has a high mass.
However, the mass of the core and associated web can reduce such freedom.
However, reader systems can be complex and expensive.
However such encodements are vulnerable to damage.
As an initial matter the high mass of the core and associated web can be difficult to lift.
Further, the high mass of the core and associated web can make it difficult for an operator to adjust a velocity of the core and associated web as is required to position the core and associated web during loading.
These difficulties can cause a user to drop or otherwise mis-handle a core when loading the core into a printer which can damage the core, the web medium or the printer.
In some instances, the process of loading a core and associated web into a printer is further complicated because the proper orientation of a core within a pair of mountings that hold the core for rotation in a printer may not be apparent.
Mis-assembly of the core to mountings that hold the core for rotation can interrupt or undermine the printing process for example, by causing images to be printed on the wrong side of a receiver medium.

Method used

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  • Core driving method for printer web medium supply
  • Core driving method for printer web medium supply
  • Core driving method for printer web medium supply

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0058]FIG. 2 shows a web medium supply 32 for printer 20. As is shown in FIG. 2, web medium supply 32 has a web supply frame 100 positioning a first mounting support 102 at a separation distance 90 from a second mounting support 104 along or parallel to an axis of rotation 92.

[0059]A first core mounting 110 is provided having a first surface 112 that is rotatably supportable by the first mounting support 102 and a first engagement end 119 to support a first end 142 of a core 140. A second core mounting 130 is also provided having a second surface 132 that is rotatably supportable by the second mounting 104 and a second engagement end 139 to support a second end 144 of core 140.

[0060]Core 140 has a first open area 143 beginning at first end 142 and extending toward second end 144 and a second open area 145 beginning at second end 144 and extending toward first end 142. First open area 143 and second open area 145 are shaped to receive first engagement end 119 and second engagement en...

second embodiment

[0166]As is shown in FIG. 28, a method for operating a web medium supply 23 to control rotation of a core 140 having a web is provided. In a first step of this method, a core is received (step 410), data regarding the core is optionally determined (step 412), a first force is applied to a first end 142 of core 140 using a first actuator 182A and a second force is applied to a second end 144 of core 140 using a second actuator 182B (step 416) to control rotation of core 140 and web 25.

[0167]In this embodiment, the first force and the second force are sufficient to control rotation of core 140 against an inertial load created by the core 140 and web 25. Further, as is discussed above, both the first force and the second force are less than a third force that would be applied at a single driven end of an alternative core to rotate the alternative core against the inertial load. Further, core 140 can have a first yield strength at the first end 142 and a second yield strength at the sec...

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Abstract

Methods for operating a printer web medium supply are provided in one aspect of the method. An input force is received and the input force is distributed to supply first force at a first end of a core having a web wound thereon and to supply a second force at a second end of the core with the first force and the second force being sufficient to control rotation the core against an inertial load of the core and web medium wound thereon. Both the first force and the second force are less than a third force applied to a single driven end of an alternative core to rotate the alternative core against the inertial load and wherein the core has a first yield strength at the first end and a second yield strength at the second end that are less than a third yield strength required to receive the third force at the driven end of the alternative core.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application relates to commonly assigned, copending U.S. application Ser. No. ______ (Docket No. 96568RRS), filed ______, entitled: “METHOD FOR OPERATING PRINTER WEB MEDIUM SUPPLY”; U.S. application Ser. No. ______ (Docket No. 96569RRS), filed ______, entitled: “PRINTER WEB MEDIUM SUPPLY”; U.S. application Ser. No. ______, (Docket No. 96780RRS), filed ______, entitled: “PRINTER WEB MEDIUM SUPPLY WITH DRIVE SYSTEM”; each of which is hereby incorporated by reference.FIELD OF THE INVENTION[0002]This invention pertains to the field of printing.BACKGROUND OF THE INVENTION[0003]It is well known to supply donor mediums and receiver mediums used in printers in the form continuous webs that are wound onto a core until used. This method of web medium storage is highly efficient allowing a large amount of web medium to be supplied to a printer in a form that is easy to manufacture and readily accessible for use during printing. Accordingly, pri...

Claims

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Application Information

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IPC IPC(8): B65H16/10B65H75/18
CPCB65H16/103B65H2511/14B65H2701/1848B65H75/30B65H75/185B65H2220/11
InventorLAWNICZAK, GARY P.BUCKS, RODNEY R.RIMAI, DONALD S.STELTER, ERIC C.RAPKIN, ALAN E.
OwnerEASTMAN KODAK CO