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. 11, 1996
Filed:
Aug. 31, 1994
Edwin K Shenk, Westford, MA (US);
Polaroid Corporation, , US;
Abstract
A method and apparatus for producing a zoom system within a printer is disclosed where the zoom system is adapted to selectively enlarge or reduce an original image such that the enlarged or reduced image can be printed onto a recording medium. Further, the zoom system is adapted to selectively adjust an aspect ratio of the original image. The zoom system utilizes a phase lock loop to produce a pixel clock in a fast scan direction and a governing motor control to alter incremental movement of the recording medium in the slow scan direction, thus, individual pixel size can be manipulated by varying a frequency of the pixel clock to alter a width of the pixel projected onto the recording medium and by governing overlap of successive print lines, and repeating print lines if necessary, to alter a length of the pixel.