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:
Jun. 30, 1992
Filed:
Jun. 26, 1990
Jeffrey A Small, Chili, NY (US);
Mary A Hadley, Greece, NY (US);
Martin Potucek, Greece, NY (US);
Hieu T Pham, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An LED printhead or the like includes a data bus for carrying multibit digital image data signals for grey level recording. A token bit signal is generated and shifted through registers upon the printhead to enable image data registers associated with each LED to latch the image data signals in appropriate order. The image data signals control the energization times for recording pixels. A digitally adjustable current mirror controls the level of current to each LED during recording. Digital current data signals for controlling this level of current are also communicated over one of the lines of the data bus. A token bit signal is also used to control the latching of current data signals in registers storing the digital data used for current control.