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:
Mar. 23, 1993
Filed:
Jul. 01, 1991
Takeshi Kato, Hitachi, JP;
Shouji Saitoh, Takahagi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A laser beam printer comprises a frame memory of one page part and a compression means for compressing a dot data in the frame memory. The compression means compresses to make a compressed and encoded data. The laser beam printer comprises further a memory operable for storing dividedly a plural pages part of the compressed and encoded data and an extension means for decoding and extending the encoded data in the memory by synchronizing with a printing timing. The data compression in the frame memory and the decoding/printing of the dot data in the encoded data memory carries out in parallel. A printing in the laser beam printer can be realized at a high speed.