Let A be an Artin group.
A partition
{\mathcal{P}}
of the set of standard generators of A is called admissible if, for all
{X,Y\in\mathcal{P}}
,
{X\neq Y}
, there is at most one pair
{(s,t)\in X\times Y}
which has a relation.
An admissible partition
{\mathcal{P}}
determines a quotient Coxeter graph
{\Gamma/\mathcal{P}}
.
We prove that, if
{\Gamma/\mathcal{P}}
is either a forest or an even triangle free Coxeter graph and
{A_{X}}
is residually finite for all
{X\in\mathcal{P}}
, then A is residually finite.
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