The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 1992
Filed:
Jun. 19, 1990
Kenji Okada, Ibaraki, JP;
Tsukasa Ogawa, Ibaraki, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A print-termination detecting apparatus and method for a line printer with which it is possible to accurately predict the termination of printing so as to shorten the paper feeding cycle and to thereby make it possible to attain higher speed printing. Based on the fact that the termination of printing can be predictively detected X columns earlier by anticipatory comparison with respect to a character which will come X columns after a currently opposite character, a pre-scanning flag for storing the result of the anticipatory comparison is provided wherein, when all the columns of the pre-scanning flag indicate 'no print data', it is recognized that printing has been terminated, whereupon the paper feeding cycle is started. X is determined taking into consideration the dead time in the paper-feeding system including a paper-feeding motor, the time required for comparison/collation, and the flight time of the respective print hammer.