<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-02-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000921500</issuerCik>
        <issuerName>CONSOLIDATED GRAPHICS INC /TX/</issuerName>
        <issuerTradingSymbol>cgx</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001033356</rptOwnerCik>
            <rptOwnerName>DAVIS JOE R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CONSOLIDATED GRAPHICS</rptOwnerStreet1>
            <rptOwnerStreet2>5858 WESTHEIMER SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77057</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1554800</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>50.9</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-02-13</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2006-02-13</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>50.9</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-02-13</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-02-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>300000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1100000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The options are immediately exercisable; however, there are restrictions on the sale of the underlying shares which are acquired upon exercise.  Generally, these restrictions are lifted 20% per year each March 31 beginning in 2007.  Under certain circumstances as set forth in Mr. Davis' Employment Agreement dated February 13, 2006 and Employment and Change in Control Agreement dated July 25, 2000, as amended on February 13, 2006, the lifting of these restrictions may be accelerated or deferred from the dates initially provided.</footnote>
        <footnote id="F2">Includes previously reported option grants as follows:  250,000 @ $53.25; 300,000 @ $11.4375; 50,000 @ $19.10; 50,000 @ $14.75; 50,000 @ $23.00; 50,000 @ $41.51; and 50,000 @ $50.84.  Pursuant to the terms of Mr. Davis' employment agreement dated February 13, 2006 all of these option grants are vested; however, a restriction is imposed on the sale of 300,000 of the underlying shares which restrictions lift (and can be accelerated or deferred) concurrent with the provisions of the options granted on February 13, 2006 and being concurrently reported herein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Joe R. Davis</signatureName>
        <signatureDate>2006-02-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
