Appeal No. 1999-2794
Application No. 08/597,035
BACKGROUND
The invention is directed to an image scanner utilizing a shift register for receiving
charges stored in photosensitive elements, and supplying the charges to an output. Claim
1 is reproduced below.
1. An image scanner comprising:
a photosensitive element array having a plurality of photosensitive elements,
arranged in a primary scanning direction from a first end to a second end, for being
exposed to light from an object to accumulate therein a plurality of charges
respectively;
a shift gate for receiving a transfer command signal and for receiving said
plurality of charges accumulated in said plurality of photosensitive elements and
simultaneously transferring said plurality of charges in response to the transfer
command signal;
a shift register for receiving said plurality of charges simultaneously
transferred from said shift gate, and sequentially outputting said plurality of charges
one by one, starting from one of the plurality of charges accumulated in one of the
plurality of photosensitive elements which is disposed at said first end; and
transfer command signal output means for supplying said transfer command
signal to said shift gate at variable generation intervals of time in accordance with a
length of said object in said primary scanning direction.
The examiner relies on the following references:
Nakajima et al. (Nakajima) 5,033,102 Jul. 16, 1991
Hosokawa 5-37861 Feb. 12, 1993
(published Japanese patent application, with English translation dated Dec., 1993)
Appellant's admitted prior art (the APA).
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