JPS6032035A - Reader/printer for aperture card - Google Patents

Abstract

PURPOSE:To prevent useless power consumption and deterioration of picture quality by providing a card carriage with a sensor for detecting the presence of an aperture card, and when there is no aperture card, turning off a projection lamp and inhibiting printing operation. CONSTITUTION:When a power supply is turned on, the sensor 7 detects the presence of the aperture card, and when the card is not detected, an exposure lamp is turned off. When the sensor 7 detects that the card has been previously carried into the card carriage or has been carried afterwards and the exposure lamp 14 is switched to reader ON, a film stored in the aperture card is enabled to be read out. When a print switch 12 is turned on at the time of printing, the exposure lamp 14 is switched to the rated ON and copying operation starts. Since the projection lamp is turned off and the printing operation is inhibited when there is no aperture card, useless power consumption and temperature rise are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD This invention relates to a reader printer for aperture cards.

In conventional aperture card reader printers, one projection lamp, for example a halogen lamp, is used for temporary illumination of the reader and for exposure during printing.

In this conventional reader printer, when switched to the reader designation state, the lamp is always on just by turning on the power switch, so the card that holds the aperture card for projection If the aperture card is not inserted into the carriage, the power supplied to the lamp will be wasted ◇ Also, due to continuous lighting accompanied by this wasteful power consumption,
The temperature of lamps, condensers, etc. increases significantly. In addition, if the print switch is accidentally pressed without an aperture card inserted into the card carriage, wasteful power consumption and temperature rise will further increase.
Print operations are also wasted.

In particular, printing operations without an aperture card involve wasteful operation of the printing mechanism, which consumes copy paper, developer, and electricity, as well as the use of reverse development in reader printers, whereas normal copying machines use regular development. In contrast, a large amount of toner is wasted at once, and as a result of this large amount of toner consumption, the roller of the fixing device is This leads to smearing and resulting offset, and in some cases, the tackiness of the adhered toner, which causes offset, can cause the copy paper to jam. Further, if the large amount of toner consumption continues several times, it will affect the toner density and lead to a decrease in image quality.

Purpose This invention detects the presence or absence of an aperture card in a card carriage, and if there is no aperture card, it is assumed that the aperture card is not used by either the reader or the printer, and the lamp used for both is turned off and the printing operation is stopped. It is an object of the present invention to provide an aperture card reader/printer that can prevent the above-mentioned conventional problems from occurring and solve the above-mentioned conventional problems. To achieve the above objective, a sensor is installed in the card carriage to detect the presence or absence of an aperture card, and if there is no aperture card in the card carriage, the projection lamp is turned off and the printing operation is prohibited. .

To explain the embodiment shown in the embodiment diagrams, Fig. 1 is replaced by Fig. 2.
The figure schematically shows a card carriage, with a card holding guide plate 2 for receiving and holding an aperture card between the board 1 and the right front side of the board 1, and a film part of the aperture card on the left side of the board 1. A glass plate 3 corresponding to the glass plate 3 and a pressure plate 4 for press-fixing the film portion to the glass plate 3 are provided, respectively. A vertical feed roller 5 for card feeding is provided at the center of the upper side of the board 1 so as to partially protrude from the front side of the board 1.
An aperture card supplied from above is fed between the substrate 1 and the guide plate 2 and between the glass plate 3 and the pressure plate 4, so that the pressure plate 4 presses the film.

A pair of card ejecting rollers 6 are provided at two suitable locations above and below the part facing the guide plate 2 of the board 1, with a portion of the rollers 6 protruding from the front side of the board 1. The aperture card is discharged to the right after the pressure plate 4 releases the film.

A sensor 7 for detecting the presence or absence of an aperture card is provided in a part of the portion where the substrate 1 and the guide plate 2 face each other. The sensor 7 is a photosensor consisting of a light emitter 7a behind the board 1 and a light receiver 7b in front of the guide plate 2, and has a through hole 8 formed in the board l and the discharge roller mounting plate 16.
The above-mentioned detection is performed based on whether the light is blocked by the aperture card through the through hole 9 formed in the guide plate 2.

The sensor 7 may be a reflective photo sensor that detects the presence or absence of reflected light from the aperture card, or a mechanical switch that detects the presence or absence of a push by the aperture card.

As shown in FIG. 3, the sensor 7, together with the exposure lamp control circuit 1O, print control circuit 11, print switch 12, etc., is connected to the central control unit 1i of the operation control microcomputer provided in the reader printer. If there is no aperture card in the printer, the reader printer is not used as a reader or a printer, so the exposure lamp 14 is not turned on even when the power is turned on, and the print switch 12 is
The print mechanism 15 is controlled so that it is not activated even when the switch is turned on.

FIG. 4 shows an example 1 of such control in the form of a flowchart. When the power is turned on, first, the sensor 7 detects the aperture card. If no card is detected, the exposure lamp is turned off to prevent unnecessary power consumption and temperature rise.

If the aperture card is being fed into the card carriage or is being fed in later, the sensor 7 will detect this and the exposure lamp 14'tl' for the reader will first turn on as an annular card receptacle. let This makes it possible to glue the film held on the aperture card. In the case of printing, by further turning on the print switch 12, the exposure lamp 14 is switched to the rated lighting and the copying operation is started.

Here, the operation of the print switch 12 for the copy operation includes the detection of the aperture card, the exposure run 114
0 is turned on, and even if the print switch 12 is operated by mistake without an aperture card, the print operation will not be performed, resulting in a wasteful print operation that consumes copy paper and toner. This prevents the fixing roller from becoming dirty due to so-called black solid printing, and from causing offset and jam.

If the aperture card is ejected by the operator's operation after reading or printing, the sensor 7 will no longer detect the aperture card, and the exposure lamp 14 will be turned off even if the power is not turned off.

Effects According to the present invention, the card carriage that holds the aperture card for projection during reading or printing is provided with a sensor that detects the presence or absence of the aperture card, and when there is no aperture card in the card carriage, the projection lamp is turned off. This also prevents unnecessary power consumption and temperature rise caused by turning on the projection lamp without an aperture card, and even if the print switch is operated by mistake, the print operation will not be duplicated. This prevents wasted paper and toner consumption, so-called solid black printing, which stains the fixing roller, and also prevents offsets and jams from occurring.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of a card carriage showing an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a control circuit diagram, and FIG. 4 is a control flowchart. 8.9... Through hole, 10... Exposure lamp control circuit, 11... Print control circuit, 12... Print switch, 13... Central control unit, 14... Exposure lamp (projection lamp) ), 15...Print mechanism applicant Minolta Camera Co., Ltd. agent Goho - Keiji Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) The card carriage that holds the aperture card for reading or projection during printing is equipped with a sensor that detects the presence or absence of the aperture card, and if there is no aperture card in the card carriage, the projection lamp is turned off and the printing operation is prohibited. An aperture card reader printer characterized by