Canon Kabushiki Kaisha

Yuji Uramoto

Noboru Koumura

Yoshinobu Sekiguchi

Kota Kiyama

Katsuhiko Takano

Shoji Kanemura

Noriyuki Chino

Junji Yasuda

An image forming apparatus capable of enhancing the accuracy of the scanning position of a laser beam to thereby obtain a more precise image. Optical sensors detect reflected light from a surface of a photosensitive drum. During image formation, the apparatus detects the scanning speed of the laser beam in a main scanning direction based on detection signals from the respective optical sensors in each of divisional sections of an image forming area in the main scanning direction. The apparatus corrects magnification of the image in the main scanning direction, based on results of detection of the scanning speed of the laser beam in the main scanning direction.

Image forming apparatus with scanning position corrected by non-imaging laser beam

In an electronic apparatus performing various calculations based on input data which are entered by pressing numeral keys and calculation keys and outputting results by moving a decimal point by a predetermined digit, there is provided means for judging, when a calculation result output key is operated, the presence or absence of a flag designating either a division calculation or a multiplication calculation and judging the calculation mode. Only when the calculation condition at the time when the calculation result output key is operated is at a first registration number state and the division flag is set, the calculation result is output by moving the decimal point by a predetermined digit. If the multiplication flag is set, the calculation result is output without moving the decimal point. With such an arrangement, in a so-called add-mode performing calculations and outputting calculated results by automatically moving decimal points, a function of performing a division by an identical number and moving the decimal point and a function of performing a multiplication by an identical number and not moving the decimal point, are realized.

Electronic apparatus having an improved calculation function

A recorder includes a thermal head for recording images on a recording medium based on the recording signal to be provided, a power supply switching unit for supplying power for operating the thermal head, a voltage detector for detecting power supplied by the power supply switching unit, and a printer control unit which actuates the voltage detector for a plurality of times, determines the power value of the recording signal to be supplied to the thermal head based on selecting a higher level from the results of the plurality of detections, and controls recording by the thermal head according to the selected level.

Thermal recorder

Growing community of inventors

Tokyo, Japan

Yuji Uramoto