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. 21, 1999
Filed:
Aug. 31, 1993
Seiji Kageyama, Yokohama, JP;
Chikahiko Nagata, Kanagawa-ken, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A printing apparatus executes a series of print commands from a host computer and controls a printer engine equipped with a rotation-type double-side printing mechanism. The printing apparatus comprises page buffers, a drawing-processing unit for drawing data on the page buffers. and a printing-processing unit for processing printing of a drawn data. The printing-processing unit determines whether the drawn data to be printed is first or second-half page is to be performed, and immediately starts printing of first-half if first-half page is determined or puts printing of the second-half page in a wait state if second-half page is determined. The printing-processing unit releases the printing of the second-half page from the wait state when a predetermined condition has been detected. The predetermined condition can be that the number of sheets retained in the printing mechanism has reached a predetermined maximum number or that a final page of a document has been detected by receiving a command indicating the end of a double side printing. The predetermined condition can also be that a change of sheet-sizes, a change of paper supply units or a change of paper-eject units has been detected.