Claims
- 1. A printer for printing on a web of record members, said web having a plurality of detectable indices disposed along the length thereof, said indices having a predetermined length along the longitudinal axis of the web, said printer comprising:
- means for advancing said web through said printer;
- means for detecting said indices while said web is being advanced;
- means responsive to said detecting means for determining said predetermined length of said indices; and
- means responsive to said determining means and said detecting means for causing said advancing means to advance said web a predetermined increment following the detection of a subsequent one of said indices, said increment being less than the length of the last of the previously determined indices.
- 2. A printer as recited in claim 1 wherein said increment is determined by the relation:
- OFFSET=L/2+K, wherein OFFSET equals the predetermined increment, L equals the length of the index determined by the detecting means, and K is a constant.
- 3. A printer as recited in claim 1 wherein said increment is determined by the relation:
- OFFSET=L-K', wherein OFFSET equals the predetermined increment, L equals the length of the index determined by the detecting means, and K' is a constant.
- 4. A method for controlling the registration relative to a print head of a web of record members as the web is passed through a printer, said web having a plurality of detectable indices disposed thereon, each of said indices having a predetermined length along the longitudinal axis of said web, said method comprising:
- detecting the presence of one of said indices while advancing the web to determine the length of one of said indices;
- detecting the presence of another one of said indices subsequent to said advancement; and
- continuing the advancement of the web for a predetermined increment following the detection of the latter index, said predetermined amount being less than the length of the last of the previously determined indices.
- 5. The method recited in claim 4 wherein the predetermined increment the web is advanced is approximately equal to one-half the length of the last of the previously determined indices plus a constant.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part application of U.S. patent application Ser. No. 07/209,946 filed June 22, 1988 entitled MICROPROCESSOR CONTROLLED THERMAL PRINTER and is related to United States patent application entitled "HAND-HELD LABELER AND METHOD OF LABELING", Ser. No. 07/209,759 filed 6-22-88 by Brent E. Goodwin, Donald L. Karn, John D. Mistyurik, John R. Monteith, Mark A. Seale and David R. Wisecup and to United States application entitled "RECONFIGURABLE PRINTER", Ser. No. 07/209,945 filed 6-22-88 by Richard D. Wirrig, Amy S. Christopher and Donald A. Morrison, both filed concurrently herewith and incorporated herein by reference. All of the above applications are assigned to the same assignee as the assignee of the present application.
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4037708 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
209946 |
Jun 1988 |
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