Gdtyjr

I want to use an image (in which chapter name is written) in place of where the chapter name is. But chapter name is required in TOC as text.

Following code give a blank page before the chapter title image.
Thanks for all the help :)
MWE

documentclass[12pt,a4paper,fleqn,openany,twoside]book
%
usepackagesubfiles
usepackageTB_bookstyle
%%%%%
%
begindocument
%
newgeometrytextwidth=paperwidth, textheight=paperheight, noheadfoot, nomarginpar
chapter*tinycolorwhiteMessages
addcontentslinetocchapterMessages
%addtocounterchapter1
beginfigure[h]
 centering
 includegraphics[width=1.0textwidth]./images/Chap_Msgs
endfigure
enddocument

Self Made style file:

ProvidesPackageTB_bookstyle
%
%%% PAGE DIMENSIONS AND SETTINGS
usepackagegeometry % to change the page dimensions
geometrya4paper % or letterpaper (US) or a5paper or....
%geometrymargin=1.5in % for example, change the margins to 2 inches all round
geometrytop=0.8in, bottom=0.8in, left=1.0in, right=1.0in
% geometrylandscape % set up the page for landscape
% read geometry.pdf for detailed page layout information
%
%%%%GRAPHICS, FLOATS, SYMBOLS AND MATHS
% support the includegraphics command and options
usepackagegraphicx 
%usepackagebooktabs % for much better looking tables
usepackagefloatrow%for side captions
usepackage[utf8]inputenc%for proper characters
% for rotating floats
usepackagelscape
%for subfigures and tables
usepackage[font=small,labelfont=bf]caption
%usepackagesubcaption
usepackage[font=footnotesize]subfig
usepackage[para,online,flushleft]threeparttable
usepackagearray
usepackagetabularx
usepackagebooktabs
newcolumntypebX
newcolumntypes>hsize=.5hsizeX
usepackagelongtable%for long tables
%%%
usepackageamsmath,amssymb
%%
usepackage[allcolors=black,colorlinks=true]hyperref%no boxes for links
usepackage[noabbrev,capitalize]cleveref%automatic table /figure before refs
creflabelformatequation#2textup#1#3%remove brackets around eq nos
%%%
usepackage[osf,sc]mathpazo %for upright math
usepackageeulervm
usepackagegensymb
usepackagetextcomp
usepackagewasysym %for per mil sign
usepackagearray % for better arrays (eg matrices) in maths
usepackageparalist 
usepackageenumitem% very flexible & customisable lists (eg. enumerate/itemize, etc.)
usepackageverbatim % adds environment for commenting out blocks of text & for better verbatim
usepackagesubfig % make it possible to include more than one captioned figure/table in a single float
usepackage[version=3]mhchem % for upright CO2 etc
usepackagewrapfig%text wrapped figures/tables
%%
usepackagecalligra%For cursive font
usepackage[T1]fontenc
usepackageblindtext, color
definecolorbrownrgb0.5, 0.2, 0.0
definecolorcornellredrgb0.7, 0.11, 0.11
definecolorbrown_wrgb0.65, 0.16, 0.16
usepackagetitlesec
%titleformatchapter*[hang]tinybfseriesthechapterhsptextcolorwhitehsp0pttinybfseries
%titleformatchapter[hang]normalfontLargebfserieschaptertitlename thechapter:1em 
titlespacingchapter-20pt-20pt-20pt
titlespacingsection0pt0pt5pt
titlespacingsubsection0pt0pt5pt
titlespacingsubsubsection0pt0pt5pt
%to stop starting new chapter in new page
usepackageatbegshi,etoolbox
%%
%%% HEADERS & FOOTERS
usepackagefancyhdr % This should be set AFTER setting up the page geometry
%setlengthheadheight50pt 
pagestyleempty % options: empty , plain , fancy
%%
%%% ToC (table of contents) APPEARANCE
usepackage[nottoc,notlof,notlot]tocbibind % Put the bibliography in the ToC
%%%%
%renewcommandcftsecfontrmfamilymdseriesupshape
%renewcommandcftsecpagefontrmfamilymdseriesupshape % No bold!
%usepackagetocloft % Alter the style of the Table of Contents
setcountertocdepth4
renewcommandbibnameReferences
%usepackagebibentry%for no ref list
%made command
%makeatletter
%newcommand*toccontents@starttoctoc
%makeatother
%renewcommandcontentsname
%%%%%%%
%
%usepackage[colon,authoryear]natbib
%
%mytilde
newcommandmytilderaise.17exhbox$scriptstylemathttsim$
%%%