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. 26, 1995
Filed:
Dec. 30, 1992
Shigeru Toyomura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic apparatus having a printer which can print at a speed according to a key operating speed of the user. A keyboard section KB includes: numeric keys for the user to input numeric data; function keys such as four-arithmetical operating keys such as addition '+', subtraction '-', multiplication '.times.', division '.div.'. and total '='; and function keys such as clear key 'C', memory key 'M+', and the like which are set so as not to perform the printing, where the printing speed of the printer PR is variable. In an arithmetic computation unit AC, a period of time which is required after the numeric key of the keyboard KB was first operated until the function key accompanied with the printing operation is operated is divided by the number of key operation times, obtaining the average value of the key operation time intervals. The printing speed of the printer PR is controlled in accordance with the average operation time interval. The number of key codes stored in a key buffer memory is judged and a driving frequency of a stepping motor is controlled, allowing the printing operation to be executed at a variable printing speed.