Canon Kabushiki Kaisha

Fujitsu Component Limited

Other

Hiroyuki Kataoka

Nobuyuki Suzuki

Masanori Yamada

Masaharu Kawamura

Ryuichi Kobayashi

Ritsuo Kashiyama

Yoshihito Harada

Masaaki Yoshida

Toshiyuki Kumakura

Natsumi Uryu

Tosiyuki Kumakura

Masanori Uchidoi

Makoto Katsuma

Kouichi Ohmori

Taichi Sakakura

Katsuhisa Beniya

A printer includes a transport part that transports a sheet, a printing part that prints on the sheet, a cutting part that cuts the sheet by moving a movable blade toward a stationary blade, and a controller that controls the transport part and the cutting part. When the sheet is label paper having an adhesive layer, the controller controls the transport part and the cutting part to transport the sheet rearward before moving the movable blade that cut the sheet, move the movable blade in a direction away from the stationary blade in a state where the sheet is fed in rearward, and thereafter transport the sheet frontward.

Printer

A thermal printer includes heating elements that generate heat according to amounts of applied energy, an energy applier that applies energy to the heating elements, a memory that stores a gradation table where energy levels to be applied to the heating elements are set for gradation levels based on a relationship between dot area ratios of an image and the amounts of energy applied to the heating elements, and a controller that transfers control data multiple times to the energy applier based on the gradation table to control the amounts of energy to be applied by the energy applier to the heating elements, each of the control data corresponding to different amounts of energy.

Thermal printer

A thermal printer includes heating elements each of which generates heat according to an amount of energy applied thereto, an energy applier that applies energy to each of the heating elements, a memory that stores a gradation table where energy values are set for gradation levels based on a relationship between reflectances of a printed image and amounts of energy applied to the heating elements, and a controller that transfers control data corresponding to gradation levels of image data to the energy applier based on the gradation table to control the amounts of energy to be applied by the energy applier to each of the heating elements.

A camera system includes a zoom driving mechanism driven by a motor for varying the focal length of a lens, a detecting device for detecting the focal length of the lens, and a controller for automatically stopping the motor after a predetermined time period from the time when the detecting means detects the fact that the focal length of the taking lens reaches a telephoto end or a wide-angle end.

Camera with power zoom function and interchangeable lens with power zoom

A camera provided with an image-shake preventing function includes an image-shake preventing arrangement for preventing an image shake, and a restricting circuit for restricting the operation of the image-shake preventing means in response to setting of an interval shooting mode or a remote-controlled shooting mode.

Camera provided with image-shake preventing function

A camera has an arrangement which includes a strobe as a built-in part or to which the strobe can be detachably secured, the strobe being arranged to move to up and down positions. The camera is provided with a strobe operating device for moving the strobe from the up position to the down position, a selecting switch for selecting single shooting and continuous shooting, and a controlling arrangement. The controlling arrangement actuates the strobe operating device to move the strobe to the down position after the completion of photography when the single shooting is selected by the selecting switch. When the continuous shooting is selected by the selecting means and while the camera is continuing a photographic operation, the controlling means maintains the strobe at the up position without actuating the strobe operating means even after the completion of photography.

Camera

The present invention provides a camera system comprising: a zoom driving means driven by a battery as a power source, for varying a focal length of a taking lens; other driving means driven from the battery as a power source; a detecting means for detecting whether the other driving means are being executed or the other driving means are to be executed; and a control means for prohibiting the execution of the zoom driving means when the detecting means detects the fact that the other driving means are being executed or that the other driving means are to be executed.

In a flash photographing apparatus, a flash device is arranged to slow the rise of flashing characteristic thereof at the initial stage of flashing. To attain this purpose, the electric charge of a first capacitor is impressed via an inductance onto a flash tube at the initial stage of flashing. Following this, the electric charge of a second capacitor is directly impressed on the flash tube without passing through the inductance.

Flash photographic apparatus

A data communication system in which data communication between a camera and an accessory such as a strobe is performed by transmitting items of data in sequence in synchronism with clock pulses. If the data communication is not performed normally, the system detects an error in this communication, and the operation of performing data communication using these items of data is recommenced.

Data communication system for camera system

A light measuring circuit including a light sensing device for sensing light and producing a signal representative of the light sensed, a compressing circuit for compressing the signal, a capacitor having one terminal connected to a predetermined voltage, a charging circuit responsive to the compressing circuit for charging the capacitor, a detecting circuit for responding to the voltage level of the capacitor, a switch for shorting the capacitor when closed for initiating charge of the capacitor by opening, and a delay circuit coupled to one of the charging circuits and the switch for delaying the onset of charge of the capacitor.

Light integrating circuit for use in a light measuring device which is

In a system for setting the aperture in a camera for flash photography, a minimum aperture is computed in response to parameters such as distance to an object, stroboscopic guide number and film sensitivity. In one embodiment, a predetermined aperture value is preestablished in the system and the computed minimum aperture is compared therewith. Where the computed minimum aperture is below such predetermined aperture value, such computed minimum aperture is used in flash photography. On the other hand, when the computed minimum aperture is above such predetermined aperture value, an aperture larger than the predetermined minimum aperture value is used in flash photography. Other embodiments for flash aperture setting are also set forth.

Aperture decision system for flash photographing

A camera system capable of performing flash photography is arranged to perform pre-flashing to detect beforehand the quantity of flash light to be obtained by main flashing. The system makes a display to show whether the flash light quantity thus detected assures an adequate exposure.

Camera system

An electronic flash apparatus having a first trigger circuit for causing a main light source to start firing, a first capacitor for firing the main light source, a second trigger circuit for causing a preliminary light source to start firing, a second capacitor for firing the preliminary light source, and a circuit for producing a trigger signal for preliminary lighting when a preliminary illumination is carried out, wherein the second capacitor is connected in common to the main and preliminary light sources, and there is provided a preliminary lighting changeover circuit responsive to selection of a bounced-flash mode for changing the application of the trigger signal from the second trigger circuit to the first trigger circuit.

Electronic flash apparatus

The disclosed flash device is of the kind that incorporates an integrated processing circuit requiring a stable voltage, but one and the same battery supplies both a booster circuit and the processing circuit. The device avoids the drop in voltage to the processing circuit when the booster circuit draws current after a flash by means of a detector circuit that detects the flash or the operation of the booster circuit. A switching circuit responds to the output of the detector circuit and supplies the charge on a back-up capacitor to the integrated processing circuit. Thus, in the event of a flash, the processing circuit which is normally operated by power from the battery is protected from a supply voltage drop by the supply of a voltage from the back-up capacitor.

Growing community of inventors

Tokyo, Japan

Hiroyuki Kataoka