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:
Dec. 20, 1994
Filed:
Jan. 04, 1993
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for gray level printing using a thermal printhead which includes characterizing the paper to be printed, defining a line of a gray scale image using bitplane data sets, entering the first of the bitplane data sets into a shift register, transferring the first of the bitplane data sets from the shift register to a latch, beginning to print a section of the line of the gray scale image using the first of the bitplane data sets in the latch, entering consecutively the remaining bitplane data sets in the shift register, transferring consecutively the remaining bitplane data sets to the latch, and completing the printing of the section of the line of the gray scale image. Multiple refreshing of data per segment printing enables less than 10 millisecond line (1728 bit) printing in 16 shade gray scale.