US 5,852,756 A · Method of adjusting image forming conditions and image forming apparatus to which the method is applied

Abstract

In a method of adjusting image forming conditions according to the present invention, it is judged whether or not a humidity detected by a humidity sensor is not less than a predetermined first humidity H.sub.1 (step W6). As a result, when it is judged that the humidity is not less than the first humidity H.sub.1, a main charger table is accessed using the detected absolute humidity as an address, and corresponding additional data G is read out (step W7). The additional data G read out, together with additional data E and main charger driving time adjustment data F, is added to main charger reference data K.sub.2, so that main charger voltage data C.sub.2 is produced (step W8). On the other hand, when the detected humidity is less than the first humidity H.sub.1, a voltage to be applied to a main charger is not adjusted depending on the humidity.

Claims10

Dependent claims

A method of adjusting, in an image forming apparatus for forming an image having a desired density by a plurality of image forming conditions set, at least one of the image forming conditions, the method comprising the steps of:

detecting a humidity;
and
adjusting only the first image forming condition out of the plurality of image forming conditions set if the detected humidity is less than a first predetermined value, wherein
the step of detecting the humidity includes detecting an absolute humidity, and wherein
the adjusting step adjusts only the first image forming condition and the second image forming condition out of the plurality of image forming conditions set if the detected humidity is not less than the first predetermined value and is less than a second predetermined value.

2 more elements

An image forming apparatus comprising a photoreceptor, charging means for uniformly charging a surface of the photoreceptor to a predetermined potential, means for illuminating and scanning an original by light emitted from a light source to form an electrostatic latent image on the surface of the photoreceptor by reflected light from the original, developing means for developing the formed electrostatic latent image by a developer, and transferring means for transferring the developed electrostatic latent image on a paper sheet, for forming an image having a desired density by setting a predetermined plurality of image forming conditions, further comprising

a humidity sensor for detecting the atmospheric humidity of the image forming apparatus,
storing means storing an adjustment data table corresponding to the humidity with respect to each of the plurality of image forming conditions;
adjusting means for adjusting, with respect to only the first image forming condition out of the plurality of image forming conditions, a set image forming condition on the basis of the adjustment data table in the storing means when a detection output of the humidity sensor is less than a first predetermined value, while adjusting, with respect to the first image forming condition and the other image forming conditions, a set image forming conditions on the basis of the adjustment data tables in the storing means when the detection output of the humidity sensor is not less than the first predetermined value.

Dependencies are inferred from the claim text.

Method of adjusting image forming conditions and image forming apparatus to which the method is applied

Life of this patent

Method of adjusting image forming conditions and image forming apparatus to which the method is applied

Life of this patent

Abstract

Claims10