Image recording apparatus
AssigneeMinolta Camera Kabushiki Kaisha
InventorMitsutoshi Yagoto
Life of this patent
Estimating the term…
Abstract
A image recording apparatus for recording images on a film by a laser beam. The image recording apparatus include a light-emitting element, a monitor element for monitoring the intensity of the light emitted from the light-emitting element, a control means for controlling the intensity of the light emitted for the light-emitting element, and a selection means to select the intensity of the light emitted from the light-emitting element with a selection portion. The monitor element is insulated from the selection portion to keep out of the influence of the external noise.
Claims16
An image recording apparatus comprising:
- a light-emitting element for emitting light;
- a drive means for supplying drive power to the light-emitting element;
- a monitor circuit for monitoring output of the light-emitting element and outputting the monitored results;
- a control means for controlling the amount of the drive power supplied to the light-emitting element based on the output value of the monitor circuit;
- a changing means connected to the monitor circuit and which changes the output value of the monitor circuit that is transmitted to the control means;
- and
- a selection means to select the amount of change in the output value of the monitor circuit that is changed by the changing means, and which has a selection portion that is disposed on the exterior of the image recording apparatus and insulated from the monitor circuit.
An image recording apparatus comprising:
- a laser element for emitting a laser beam;
- a drive means for supplying drive power to the laser element;
- a monitor element for changing a value of electric current through the monitor element according to output intensity of the laser element;
- a control means for controlling the amount of the drive power supplied to the laser element based on the output value of a monitor current of said monitor element;
- a changing means for changing the value of the monitor current that is transmitted to the control means and having plural sets of switching members and resistors which are connected in parallel, wherein each of said switching member brings the resistor corresponding thereto in connection with and out of connection with the monitor element;
- and
- a selection means to select the state of the changing means with a selection portion, and being provided on an exterior of the image recording apparatus and insulated from the monitor element.
An image recording apparatus for providing a recording light at various intensities to a recording medium, comprising:
- a light emitting element for emitting a recording light;
- drive means for supplying driving power to the light emitting element;
- an operator panel positioned apart from the drive means and including a switch member mounted on the operator panel to provide a digital signal representative of a desired light intensity for the recording light;
- a digital circuit connected to the switch member and positioned adjacent the drive means for providing an analog output signal representative of the value of the switch member;
- a monitor circuit for monitoring the recording light and providing a monitor signal;
- changing means connected to the monitor circuit and the analog output signal to adjust the monitor signal;
- and
- control means for controlling the amount of drive power of the drive means based on the monitor signal, the drive means, monitor circuit and changing means are insulated from the operator panel switch member to avoid the introduction of external noise.
Dependencies are inferred from the claim text.