US 5,668,637 A · Image processing apparatus having a copy function

Abstract

In an image processing apparatus, when a copying operation is to be conducted with a scanner and a printer having different read speed and record speed, a read document sheet feed unit having two document sheet feed speeds, one synchronized with a read interval of the image sensor and the other synchronous with a print interval of the pointer, a signal generation unit for generating a read suppress signal at a predetermined time interval and a read suppress unit for suppressing the reading of the image sensor in accordance with the read suppress signal are provided. Thus, an the copy mode, the read document sheet is fed at a speed equal to the printer speed and the image read by the image sensor is thinned so that the copy operation is attained without deterioration of image quality with a small capacity of buffer memory and simple control.

Claims11

Dependent claims

An image processing apparatus comprising:

read means for reading a document sheet line by line with a first time interval between lines;
record means for recording image data line by line with a second time interval longer than the first time interval between lines;
feed means for relatively moving said document sheet and said read means;
a buffer memory for temporarily storing the image data from said read means and outputting the stored image data to said record means;
drive means for driving said feed means in synchronism with the second time interval to relatively move said document sheet and said read means at a first constant speed;
and
conversion means for converting the image data outputted from said read means at the first time interval to the image data of the second time interval.

4 more elements

Dependencies are inferred from the claim text.

Image processing apparatus having a copy function

Life of this patent

Image processing apparatus having a copy function

Life of this patent

Abstract

Claims11